Northeastern University Department of Civil and Environmental Engineering

 

 

Jerome F. Hajjar, Ph.D., P.E.

CDM Smith Professor and Chair

Director, Laboratory for Structural Testing of Resilient and Sustainable Systems (STReSS Laboratory)

Department of Civil and Environmental Engineering

400 Snell Engineering Center

360 Huntington Avenue

Northeastern University

Boston, Massachusetts 02115-5000 USA

617-373-3242 (telephone); 617-373-4419 (fax); jf.hajjar@northeastern.edu


PUBLICATIONS

U.S. Patents

Ayers, J. A., Patterson, M. R., Onnis-Hayden, A., Gu, A., Hajjar, J. F., Stojanovic, M., Mueller, A., Myer, M. H., and Ready Containment, LLC (2017). “Robotic Mariculture System,” U.S. Patent and Trademark Office, provisional patent filed.

Books Authored

Hajjar, J. F. (chair), White, D. W., Clarke, M. J., Bridge, R. Q., Lui, E. M., Leon, R. T., and Sheikh, T. M. (1997).  Effective Length and Notional Load Approaches for Assessing Frame Stability:  Implications for American Steel Design, Committee Report from the American Society of Civil Engineers (ASCE) Structural Engineering Institute (SEI) Task Committee on Effective Length and the ASCE SEI Technical Committee on Load and Resistance Factor Design, ASCE, New York, New York, ISBN 0-7844-0230-2, 442 pp. (https://ascelibrary.org/doi/book/10.1061/9780784402306)

Books Edited or Co-Edited

Carter, C. J. and Hajjar, J. F. (eds.) (2016).  Connections in Steel Structures VIII, Proceedings of the Eighth International Workshop on Connections in Steel Structures, May 25-28, 2016, American Institute of Steel Construction, Chicago, Illinois, ISBN 0-7844-0616-2, 686 pp. (https://www.aisc.org/education/continuingeducation/education-archives/connections-in-steel-structures-viii/#.WsqkiK_rtEY)


Hajjar, J. F., Hosain, M., Easterling, W. S., and Shahrooz, B. M. (eds.) (2002).  Composite Construction in Steel and Concrete IV, Proceedings of the United Engineering Foundation Conference on Composite Construction in Steel and Concrete IV, Banff, Alberta, Canada, May 28-June 2, 2000, American Society of Civil Engineers, Reston, Virginia, ISBN 0-7844-0616-2, 1013 pp. (https://ascelibrary.org/doi/book/10.1061/9780784406168)

Hajjar, J. F. and Leon, R. T. (eds.) (1997).  Innovations in Structural Design:  Strength, Stability, Reliability.  A Symposium Honoring Theodore V. Galambos, Structural Stability Research Council, Bethlehem, Pennsylvania, ISBN 1-879749-63-7, 228 pp.

Book Chapters

Bhatia, U., Traylor, A., Moskos, C., Blumenfeld, L., Bressler, L., Hall, T. Clark, K., Deng, N., Kumar, D., Kodra, E., Hajjar, J. F., Flynn, S. E., Koutsopoulos, H., and Ganguly, A. R. (2017).  Climate Hazards and Critical Infrastructures Resilience,” Chapter 3, Section: Climate Change Adaptation, Encyclopedia of GIS, Shekhar, S., Xiong, H., and Zhou, X. (eds.), Springer Link.  (http://dx.doi.org/10.1007/978-3-319-23519-6_1634-3)

Refereed Papers in Journals

Deniz, D., Song, J., and Hajjar, J. F. (2018). “Energy-based Sidesway Collapse Fragilities for Ductile Structural Frames under Earthquake Loadings,” Engineering Structures, Vol. 174, 1 November, pp. 282-294. (https://doi.org/10.1016/j.engstruct.2018.07.019)

Eckelman, M. J., Brown, C., Troup, L. N., Wang, L., Webster, M. D., and Hajjar, J. F. (2018). “Life Cycle Energy and Environmental Benefits of Novel Design-for-Deconstruction Structural Systems in Steel Buildings,” Building and Environment, Vol. 143. 1 October, pp. 421-430. (https://doi.org/10.1016/j.buildenv.2018.07.017)

Hallowell, S. T., Myers, A. T., Arwade, S. R., Pang, W., Rawal, P., Hines, E., Hajjar, J. F., Qiao, C., Valamanesh, V., Wei, K., Carswell, W., Fontana, C. (2018). “Hurricane RiskAssessment of Offshore Wind Turbines,” Renewable Energy, Vol. 125, September, pp. 234-249. (https://doi.org/10.1016/j.renene.2018.02.090)

Denavit, M. D., Hajjar, J. F., Perea, T., and Leon, R. T.. (2018). “Elastic Flexural Rigidity of Steel-Concrete Composite Columns,” Engineering Structures, Vol. 160, 1 April, pp. 293-303. (https://doi.org/10.1016/j.engstruct.2018.01.044)

Steelman, J. S., Fahnestock, L. A., Hajjar, J. F., and LaFave, J. M. (2018).  “Cyclic Experimental Behavior of Nonseismic Elastomeric Bearings with Stiffened Angle Side Retainer Fuses for Quasi-Isolated Seismic Bridge Response,” Journal of Bridge Engineering, ASCE, Vol. 23, No. 1, January, Paper No. 04017120. (http://dx.doi.org/10.1061/(ASCE)BE.1943-5592.0001170)

Güldür Erkal, B. and Hajjar, J. F. (2017). “Laser-Based Surface Damage Detection and Quantification Using Predicted Surface Properties,” Automation in Construction, Vol. 83, November, pp. 285-302. (http://dx.doi.org/10.1016/j.autcon.2017.08.004)

Saykin, V. V., Nguyen, T. H., Hajjar, J. F., Deniz, D., and Song, J. (2017). “Material Characterization Using Finite Element Deletion Strategies for Collapse Modeling of Steel Structures,” Engineering Structures, Vol. 147, 15 September, pp. 125-133. (http://dx.doi.org/10.1016/j.engstruct.2017.05.059)

Nguyen, T. H., Le, C. H., and Hajjar, J. F. (2017). “Topology Optimization Using the P-version of the Finite Element Method,” Structural and Multidisciplinary Optimization, Vol. 56, No. 3, September, pp. 571-586. (http://dx.doi.org/10.1007/s00158-017-1675-7)

Deniz, D., Song, J., and Hajjar, J. F. (2017). “Energy-based Seismic Collapse Criterion for Ductile Planar Structural Frames,” Engineering Structures, Vol. 141, 15 June, pp. 1-13. (http://dx.doi.org/10.1016/j.engstruct.2017.02.051)

Zhou, M., Tao, M.-X., Fan, J.-S., Hajjar, J. F., and Nie, J.-G. (2017). “Experimental Study on Confining-Strengthening, Confining-Stiffening, and Fractal Cracking of Circular Concrete Filled Steel Tubes under Axial Tension,” Engineering Structures, Vol. 133, 15 February, pp. 186-199. (http://dx.doi.org/10.1016/j.engstruct.2016.12.008)

Wei, K., Arwade, S. R., Myers, A. T., Hallowell, S., Hajjar, J. F., Hines, E. M., and Pang, W. (2016).  “Toward Performance-based Evaluation for Offshore Wind Turbine Jacket Support Structures,” Renewable Energy, Vol. 97, November, pp. 701-721. (http://dx.doi.org/10.1016/j.renene.2016.06.028)

Valamanesh, V., Myers, A. T., Arwade, S. R., Hajjar, J. F., Hines, E. M., Pang, W. (2016).  “Wind-wave Prediction Equations for Probabilistic Offshore Hurricane Hazard Analysis,” Natural Hazards, Vol. 83, No. 1, August, pp. 1-22. (
http://dx.doi.org/10.1007/s11069-016-2331-z)

Denavit, M. D., Hajjar, J. F., Perea, T., and Leon, R. T. (2016). “Seismic
Performance Factors for Moment Frames with Steel-Concrete Composite Columns and Steel Beams,” Earthquake Engineering and Structural Dynamics, Special Issue on Earthquake-Induced Collapse of Structural Systems, Vol. 45, No. 10, August pp. 1685-1703. (http://dx.doi.org/10.1002/eqe.2737)

Denavit, M. R., Hajjar, J. F., Perea, T., and Leon, R. T. (2016).  Cross-Section Strength of Circular Concrete-Filled Steel Tube Beam-Columns,” Engineering Journal, AISC, Vol. 53, No. 2, Paper No. 2015-21, Second Quarter, pp. 99-105.

Denavit, M. R., Hajjar, J. F., Perea, T., and Leon, R. T. (2016).  “Stability Analysis and Design of Composite Structures,” Journal of Structural Engineering, ASCE, Vol. 142, No. 3, March, Paper No. 04015157. (http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0001434)

Steelman, J. S., Fahnestock, L. A., Hajjar, J. F., and LaFave, J. M. (2016).  “Performance of Non-Seismic PTFE Sliding Bearings when Subjected to Seismic Demands,” Journal of Bridge Engineering, ASCE, Vol. 21, No. 1, January, Paper No. 04015028. (http://dx.doi.org/10.1061/(ASCE)BE.1943-5592.0000777)

Eatherton, M. R., Ma, X., Krawinkler, H., Deierlein, G. G., and Hajjar, J. F. (2014).  “Quasi-Static Behavior of Controlled Rocking Steel Frames,” Journal of Structural Engineering, ASCE, Vol. 140, No. 11, November, Paper No. 04014083.  (http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0001005)

Eatherton, M. R., Ma, X., Krawinkler, H., Mar, D., Billington, S., Hajjar, J. F., and Deierlein, G. G. (2014).  “Design Concepts for Controlled Rocking of Self-Centering Steel-Braced Frames,” Journal of Structural Engineering, ASCE, Vol. 140, No. 11, November, Paper No. 04014082. (http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0001047)

Eatherton, M. R. and Hajjar, J. F. (2014).  “Hybrid Simulation Testing of a Self-Centering Rocking Steel Braced Frame System,” Earthquake Engineering and Structural Dynamics, Vol. 43, No. 11, September, pp. 1725-1741. (http://dx.doi.org/10.1002/eqe.2419)

Perea, T., Leon, R. T., Hajjar, J. F., and Denavit, M. D. (2014).  “Full-Scale Tests of Slender Concrete-Filled Steel Tubes:  Interaction Behavior,” Journal of Structural Engineering, ASCE, Vol. 140, No. 9, September, Paper No. 04014054. (http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0000949)

Liu, X.-G., Tao, M.-X., Fan, J.-S., and Hajjar, J. F. (2014). “Comparative Study of Design Procedures for CFST-to-Steel Girder Panel Zone Shear Strength,” Journal of Constructional Steel Research, Vol. 94, March, pp. 114-121. (http://dx.doi.org/10.1016/j.jcsr.2013.11.010)

Szyniszewski, S., Smith, B. H., Hajjar, J. F., Schafer, B. W., and Arwade, S. R. (2014). “The Mechanical Properties of a Sintered, Hollow Sphere, Steel Foam,” Materials and Design, Vol. 54, February, pp. 1083-1094. (http://dx.doi.org/10.1016/j.matdes.2013.08.045)

Steelman, J. S., Filipov, E. T., Fahnestock, L. A., Revell, J. R., LaFave, J. M., Hajjar, J. F., and Foutch, D. A. (2014).  “Experimental Behavior of Steel Fixed Bearings and Implications for Seismic Bridge Response,” Journal of Bridge Engineering, Special Issue:  Recent Advances in Seismic Design, Analysis and Protection of Highway Bridges, ASCE, Vol. 19, No. 8, August, Paper No. A4014007. (http://dx.doi.org/10.1061/(ASCE)BE.1943-5592.0000540)  

Walsh, S. B., Borello, D. J., Guldur, B., and Hajjar, J. F. (2013). “Data Processing of Point Clouds for Object Detection for Structural Engineering Applications,” Computer-Aided Civil and Infrastructure Engineering, Vol. 28, Issue 7, August, pp. 495-508. (http://dx.doi.org/10.1111/mice.12016

Filipov, E. T., Fahnestock, L. A., LaFave, J. M., Hajjar, J. F., Foutch, D. A., and Steelman, J. S. (2013).  “Seismic Performance of Highway Bridges with Fusing Bearing Components for Quasi-Isolation,” Earthquake Engineering and Structural Dynamics, Vol. 42, No. 9, July, pp. 1375–1394. (http://dx.doi.org/10.1002/eqe.2277)

Steelman, J. S., Fahnestock, L. A., Filipov, E. T., LaFave, J. M., Hajjar, J. F., Foutch, D. A. (2013). “Shear and Friction Response of Non-Seismic Laminated Elastomeric Bridge Bearings Subject to Seismic Demands,” Journal of Bridge Engineering, ASCE, Vol. 18, No. 7, July, pp. 612-623. (http://dx.doi.org/10.1061/(ASCE)BE.1943-5592.0000406)

Perea, T., Leon, R. T., Hajjar, J. F., and Denavit, M. D. (2013).  “Full-Scale Tests of Slender Concrete-Filled Steel Tubes:  Axial Behavior,” Journal of Structural Engineering, Special Issue:  NEES 1. Advances in Earthquake Engineering, ASCE, Vol. 139, No. 7, July, pp. 1249-1262.  (http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0000784)

Filipov, E. T., Fahnestock, L. A., Steelman, J. S., Hajjar, J. F., LaFave, J. M., Foutch, D. A. (2013). “Evaluation of Quasi-isolated Seismic Bridge Behavior using Nonlinear Bearing Models,” Engineering Structures, Vol. 49, No. 1, April, pp. 168-181.  (http://dx.doi.org/10.1016/j.engstruct.2012.10.011)

Takeuchi, T., Hajjar, J. F., Matsui, R., Nishimoto, K., and Aiken, I. (2012).  “Effect of Local Buckling Core Plate Restraint in Buckling Restrained Braces,” Engineering Structures, Vol. 44, November, pp. 304-411. (http://dx.doi.org/10.1016/j.engstruct.2012.05.026).

Smith, B. H., Szyniszewski, S., Hajjar, J. F., Schafer, B. W., and Arwade, S. R. (2012). “Characterization of Steel Foams for Structural Components” Metals, Vol. 2, No. 4, pp. 399-410. (http://dx.doi.org/10.3390/met2040399)

Zhang, J., Denavit, M. D., Hajjar, J. F., and Lu, X. (2012).  “Bond Behavior of Concrete-Filled Steel Tube (CFT) Structures,” Engineering Journal, AISC, Vol 49, No. 4, Foruth Quarter, pp. 169-185.

Denavit, M. D. and Hajjar, J. F. (2012). “Nonlinear Seismic Analysis of Circular Concrete-Filled Steel Tube Members and Frames,” Journal of Structural Engineering, ASCE, Vol. 138, No. 9, September, pp. 1089-1098. (http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0000544)

Szyniszewski, S., Smith, B. H., Hajjar, J. F., Arwade, S. R., and Schafer, B. W. (2012). “Local Buckling Strength of Steel Foam Sandwich Panels,” Thin-Walled Structures, Vol. 59, October, pp. 11-19. (http://dx.doi.org/10.1016/j.tws.2012.04.014)

Hashash, Y., Mwafy, A., Elnashai, A., and Hajjar, J. F. (2012).  “Development of a Multi-Disciplinary Graduate Course on Consequence-Based Earthquake Risk Management,” International Journal of Continuing Engineering Education and Life-Long Learning, Vol. 22, Nos. 1/2, pp. 127-147. (http://dx.doi.org/10.1504/IJCEELL.2012.047039)

Smith, B. H., Szyniszewski, S., Hajjar, J. F., Schafer, B. W., Arwade, S. R. (2012). “Steel Foam for Structures: a Review of Applications, Manufacturing, Material Properties and Modeling,” Journal of Constructional Steel Research, Vol. 71, April, pp. 1-10. (http://dx.doi.org/10.1016/j.jcsr.2011.10.028)

Deierlein, G. G., Krawinkler, H., Ma, X., Eatherton, M., Hajjar, J. F., Takeuchi, T., Kasai, K., and Midorikawa, M. (2011).  “Earthquake Resilient Steel Braced Frames with Controlled Rocking and Energy Dissipating Fuses,” Steel Construction:  Design and Research, Vol. 4, No. 3, August, pp. 171-175. (http://dx.doi.org/10.1002/stco.201110023)

Eatherton, M. and Hajjar, J. F. (2011).  “Residual Drifts of Self-Centering Systems Including Effects of Ambient Building Resistance,” Earthquake Spectra, Vol. 27, No. 3, August, pp. 719-744. (http://dx.doi.org/10.1193/1.3605318)

Denavit, M. D., Borello, D. J., and Hajjar, J. F. (2011).  “Behavior of Bolted Steel Slip-Critical Connections with Fillers.  II.  Behavior,” Journal of Constructional Steel Research, Vol. 67, No. 3, March, pp. 398-406. (http://dx.doi.org/10.1016/j.jcsr.2010.10.001)

Borello, D. J., Denavit, M. D., and Hajjar, J. F. (2011).  “Behavior of Bolted Steel Slip-Critical Connections with Fillers.  I.  Performance,” Journal of Constructional Steel Research, Vol. 67, No. 3, March, pp. 379-388. (http://dx.doi.org/10.1016/j.jcsr.2010.10.003)

Tort, C. and Hajjar, J. F. (2010).  “A Mixed Finite Element for 3D Nonlinear Dynamic Analysis of Rectangular Concrete-Filled Steel Tube Beam-Columns,” Journal of Engineering Mechanics, ASCE, Vol. 136, No. 11, November, pp. 1329-1339. (http://dx.doi.org/10.1061/(ASCE)EM.1943-7889.0000179)

Borello, D. J., Andrawes, B., Hajjar, J. F., Olson, S. M., and Hansen, J. (2010).  “Experimental and Analytical Investigation of Bridge Timber Piles under Eccentric Loads,” Engineering Structures, Vol. 32, No. 8, August, pp. 2237-2246. (http://dx.doi.org/10.1016/j.engstruct.2010.03.026)

Tort, C. and Hajjar, J. F. (2010).  “Mixed Finite Element Modeling of Rectangular Concrete-Filled Steel Tube (RCFT) Members and Frames under Static and Dynamic Loads,” Journal of Structural Engineering, ASCE, Vol. 136, No. 6, June, pp. 654-664. (http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0000158)

Hajjar, J. F., Krzmarzick, D., and Pallarés, L. (2010).  “Measured Behavior of Curved Composite I-Girder Bridges,” Journal of Constructional Steel Research, Vol. 66, No. 3, March, pp. 351-368. (http://dx.doi.org/10.1016/j.jcsr.2009.10.001)

Pallarés, L. and Hajjar, J. F. (2010).  “Headed Steel Stud Anchors in Composite Structures:  Part II. Tension and Interaction,” Journal of Constructional Steel Research, Vol. 66, No. 2, February, pp. 213-228. (http://dx.doi.org/10.1016/j.jcsr.2009.08.008)

Pallarés, L. and Hajjar, J. F. (2010).  “Headed Steel Stud Anchors in Composite Structures:  Part I. Shear,” Journal of Constructional Steel Research, Vol. 66, No. 2, February, pp. 198-212. (http://dx.doi.org/10.1016/j.jcsr.2009.08.009)

Takeuchi, T., Hajjar, J. F., Matsui, R., Nishimoto, K., and Aiken, I. (2010).  “Local Buckling Restraint Condition for Core Plates in Buckling Restrained Braces,” Journal of Constructional Steel Research, Vol. 66, No. 2, February, pp. 139-149. (http://dx.doi.org/10.1016/j.jcsr.2009.09.002)

Steelman, J. S. and Hajjar, J. F. (2009).  “Influence of Inelastic Seismic Response Modeling on Regional Loss Estimation,” Engineering Structures, Vol. 31, No. 12, December, pp. 2976-2987. (http://dx.doi.org/doi:10.1016/j.engstruct.2009.07.026)

Leon, R. T. and Hajjar, J. F. (2008). “ Limit State Response of Composite Columns and Beam Columns: Part II. Application of Design Provisions for the 2005 AISC Specification,” Engineering Journal, AISC, Vol. 45, No. 1, First Quarter, pp. 21-46.

Leon, R. T., Kim, D. J., and Hajjar, J. F. (2007). “ Limit State Response of Composite Columns and Beam Columns: Part I. Formulation of Design Provisions for the 2005 AISC Specification,” Engineering Journal, AISC, Vol. 44, No. 4, Fourth Quarter, pp. 341-358.

Lee, D., Cotton, S. C., Hajjar, J. F., Dexter, R. J., and Ye, Y. (2005). “Cyclic Behavior of Steel Moment-Resisting Connections Reinforced by Alternative Column Stiffener Details: II. Panel Zone Behavior and Doubler Plate Detailing,” Engineering Journal, American Institute of Steel Construction, Vol. 42, No. 4, Fourth Quarter, pp. 215-238.

Lee, D., Cotton, S. C., Hajjar, J. F., Dexter, R. J., and Ye, Y. (2005). “Cyclic Behavior of Steel Moment-Resisting Connections Reinforced by Alternative Column Stiffener Details: I. Connection Performance and Continuity Plate Detailing,” Engineering Journal, American Institute of Steel Construction, Vol. 42, No. 4, Fourth Quarter, pp. 189-214.

Bruneau, M., Engelhardt, M. D., Filiatrault, A., Goel, S. C., Itani, A., Hajjar, J. F., Leon, R. T. Ricles, J. M., Stojadinovic, B., Uang, C.-M. (2005). “Review of Selected Recent Research on U.S. Seismic Design and Retrofit Strategies for Steel Structures,” Progress in Structural Engineering and Materials, Vol. 7, pp. 103-114. (http://dx.doi.org/doi:10.1002/pse.192)

Nozaka, K., Shield, C. K., and Hajjar, J. F. (2005). “Effective Bond Length of Carbon Fiber Reinforced Polymer Strips Bonded to Fatigued Steel Bridge I-Girders,” Journal of Bridge Engineering, American Society of Civil Engineers, Vol. 9, No. 4, August, pp. 304-312. (http://dx.doi.org/10.1061/(ASCE)1090-0268(2005)9:4(304))

Nozaka, K., Shield, C. K., and Hajjar, J. F. (2005). “Design of a Test Specimen to Assess the Effective Bond Length of Carbon Fiber Reinforced Polymer Strips Bonded to Fatigued Steel Bridge Girders,” Journal of Composites for Construction, American Society of Civil Engineers, Vol. 10, No. 2, March-April, pp. 195-205. (http://dx.doi.org/10.1061/(ASCE)1084-0702(2005)10:2(195))

Tong, X., Hajjar, J. F., Schultz, A. E., and Shield, C. K. (2005). “Cyclic Behavior of Composite Steel Frame-Reinforced Concrete Infill Wall Structural System,” Journal of Constructional Steel Research, Vol. 61, No. 4, April, pp. 531-552. (http://dx.doi.org/10.1016/j.jcsr.2004.10.002)

Tort, C. and Hajjar, J. F. (2004). “Damage Assessment of Rectangular Concrete-Filled Steel Tubes for Performance-Based Design,” Earthquake Spectra, Vol. 20, No. 4, November, pp. 1317-1348. (http://dx.doi.org/10.1061/40826(186)37)

Saari, W., Hajjar, J. F., Schultz, A. E., and Shield, C. K. (2004). “Behavior of Shear Studs in Steel Frames with Reinforced Concrete Infill Walls,” Journal of Constructional Steel Research, Vol. 60, No. 10, October, pp. 1453-1480. (http://dx.doi.org/10.1016/j.jcsr.2004.03.003)

Hajjar, J. F., Dexter, R. J., Ojard, S. D., Ye, Y., and Cotton, S. C. (2003). “Continuity Plate Detailing for Steel Moment-Resisting Connections,” Engineering Journal, American Institute of Steel Construction, Vol. 40, No. 4, Fourth Quarter 2003, pp. 189-211.

Hajjar, J. F. (2003). “Evolution of Stress-Resultant Loading and Limit Surfaces in Cyclic Plasticity of Steel Wide-Flange Cross Sections,” Journal of Constructional Steel Research, Vol. 59, No. 6, June, pp. 713-750. (http://dx.doi.org/10.1016/S0143-974X(02)00063-9)

Hajjar, J. F. (2002). “Composite Steel and Concrete Structural Systems for Seismic Engineering,” Journal of Constructional Steel Research, Vol. 58, Nos. 5-8, May-August, pp. 703-723. (http://dx.doi.org/10.1016/S0143-974X(01)00093-1)

Galambos, T. V., Hajjar, J. F., Huang, W.-H., Pulver, B. E., Leon, R. T., and Rudie, B. J. (2000).  “Comparison of Measured and Computed Stresses in a Steel Curved Girder Bridge,” Journal of Bridge Engineering, American Society of Civil Engineers, Vol. 5, No. 3, August, pp. 191-199. (http://dx.doi.org/10.1061/(ASCE)1084-0702(2000)5:3(191))

Hajjar, J. F. (2000).  “Concrete-Filled Steel Tube Columns under Earthquake Loads,” Progress in Structural Engineering and Materials, Vol. 2, No. 1, pp. 72-82. (http://dx.doi.org/10.1002/(SICI)1528-2716(200001/03)2:1<72::AID-PSE9>3.0.CO;2-E)

White, D. W. and Hajjar, J. F. (2000).  “Stability of Steel Frames:  The Cases for Simple Elastic and Rigorous Inelastic Analysis/Design Procedures,” Engineering Structures, Vol. 22, No. 2, February, pp. 155-167. (http://dx.doi.org/10.1016/S0141-0296(98)00105-9)

French, C. W., Eppers, L. J., Le, Q., and Hajjar, J. F. (1999).  “Transverse Cracking in Concrete Bridge Decks,” Transportation Research Record, No. 1688, pp. 1-29. (http://dx.doi.org/10.3141/1688-03)

Hajjar, J. F., Gourley, B. C., O'Sullivan, D. P., and Leon, R. T. (1998).  “Analysis of Mid-Rise Steel Frame Damaged in Northridge Earthquake,” Journal of Performance of Constructed Facilities, American Society of Civil Engineers, Vol. 12, No. 4, November, pp. 221-231. (http://dx.doi.org/10.1061/(ASCE)0887-3828(1998)12:4(221)

O'Sullivan, D. P., Hajjar, J. F., and Leon, R. T. (1998).  “Repairs to Mid-Rise Steel Frame Damaged in Northridge Earthquake,” Journal of Performance of Constructed Facilities, American Society of Civil Engineers, Vol. 12, No. 4, November, pp. 213-220. (http://dx.doi.org/10.1061/(ASCE)0887-3828(1998)12:4(213))

Hajjar, J. F., Leon, R. T., Gustafson, M. A., and Shield, C. K. (1998).  “Seismic Response of Composite Moment-Resisting Connections.  II.  Behavior,” Journal of Structural Engineering, American Society of Civil Engineers, Vol. 124, No. 8, August, pp. 877-885. (http://dx.doi.org/10.1061/(ASCE)0733-9445(1998)124:8(877))

Leon, R. T., Hajjar, J. F., and Gustafson, M. A. (1998).  “Seismic Response of Composite Moment-Resisting Connections.  I.  Performance,” Journal of Structural Engineering, American Society of Civil Engineers, Vol. 124, No. 8, August, pp. 868-876. (http://dx.doi.org/10.1061/(ASCE)0733-9445(1998)124:8(868))

Hajjar, J. F., Schiller, P. H., and Molodan, A. (1998).  “A Distributed Plasticity Model for Concrete-Filled Steel Tube Beam-Columns with Interlayer Slip,” Engineering Structures, Vol. 20, No. 8, August, pp. 663-676. (http://dx.doi.org/doi:10.1016/S0141-0296(97)00107-7)

Hajjar, J. F., Molodan, A., and Schiller, P. H. (1998).  “A Distributed Plasticity Model for Cyclic Analysis of Concrete-Filled Steel Tube Beam-Columns and Composite Frames,”  Engineering Structures, Vol. 20, Nos. 4-6, April-June, pp. 398-412. .(http://dx.doi.org/10.1016/S0141-0296(97)00020-5)

White, D. W. and Hajjar, J. F. (1997).  “Design of Steel Frames Without Consideration of Effective Length,” Engineering Structures, Vol. 19, No. 10, October, pp. 797-810. (http://dx.doi.org/10.1016/S0141-0296(97)00161-2)

White, D. W. and Hajjar, J. F. (1997).  ”Accuracy and Simplicity of Calculations for Stability Design of Steel Frames,“ Journal of Constructional Steel Research, Vol. 42, No. 3, June, pp. 209-261. (http://dx.doi.org/10.1016/S0143-974X(97)00015-1)

White, D. W. and Hajjar, J. F. (1997).  ”Buckling Models and Stability Design of Steel Frames “ A Unified Approach,” Journal of Constructional Steel Research, Vol. 42, No. 3, June, pp. 171-207. (http://dx.doi.org/10.1016/S0143-974X(97)00014-X)

Hajjar, J. F., Gourley, B. C., and Olson, M. C. (1997).  “A Cyclic Nonlinear Model for Concrete-Filled Tubes.  II.  Verification,” Journal of Structural Engineering, American Society of Civil Engineers, Vol. 123, No. 6, June, pp. 745-754. (http://dx.doi.org/10.1061/(ASCE)0733-9445(1997)123:6(745))

Hajjar, J. F. and Gourley, B. C. (1997).  “A Cyclic Nonlinear Model for Concrete-Filled Tubes.  I.  Formulation,” Journal of Structural Engineering, American Society of Civil Engineers, Vol. 123, No. 6, June, pp. 736-744. (http://dx.doi.org/10.1061/(ASCE)0733-9445(1997)123:6(736))

Hajjar, J. F. and Gourley, B. C. (1996).  ”Representation of Concrete-Filled Steel Tube Cross-Section Strength,“ Journal of Structural Engineering, American Society of Civil Engineers, Vol. 122, No. 11, November, pp. 1327-1336. (http://dx.doi.org/10.1061/(ASCE)0733-9445(1996)122:11(1327))

Hajjar, J. F. and White, D. W. (1994).  ”The Accuracy of Column Stability Calculations in Unbraced Frames and the Influence of Columns with Effective Length Factors Less Than One,” Engineering Journal, American Institute of Steel Construction, Vol. 31, No. 3, Third Quarter, pp. 81-97.

White, D. W. and Hajjar, J. F. (1991).  “Application of Second-Order Elastic Analysis in LRFD:  Research to Practice,” Engineering Journal, American Institute of Steel Construction, Vol. 28, No. 4, Fourth Quarter, pp. 133-148.

Hajjar, J. F. and Abel, J. F. (1989).  “On the Accuracy of Some Domain-by-Domain Algorithms for Parallel Processing of Transient Structural Dynamics,” International Journal for Numerical Methods in Engineering, Vol. 28, No. 8, August, pp. 1855-1874. (http://dx.doi.org/10.1002/nme.1620280811)

Hajjar, J. F. and Abel, J. F. (1989).  “Parallel Processing of Central Difference Transient Analysis for Three-Dimensional Nonlinear Framed Structures,” Communications in Applied Numerical Methods, Vol. 5, No. 1, January-February, pp. 39-46. (http://dx.doi.org/10.1002/cnm.1630050107)

Hajjar, J. F. and Abel, J. F. (1988).  “Parallel Processing for Transient Nonlinear Structural Dynamics of Three-Dimensional Framed Structures using Domain Decomposition,” Computers and Structures, Vol. 30, No. 6, pp. 1237-1254. (http://dx.doi.org/10.1016/0045-7949(88)90189-7)

Hajjar, J. F., Martha, L. F., O'Conner, T., and Abel, J. F. (1988).  “On Some Recent Evolutions in Personal Supercomputing and Workstation Graphics,” Communications in Applied Numerical Methods, Vol. 4, No. 3, May-June, pp. 373-378. (http://dx.doi.org/10.1002/cnm.1630040312)

Bailey, B. C., Hajjar, J. F., and Abel, J. F. (1986).  “Towards Effective Interactive Three-Dimensional Colour Postprocessing,” Engineering Computations, Vol. 3, No. 2, June, pp. 90-98. (http://dx.doi.org/10.1108/eb023645)
 

Refereed Papers in Special Publications

Takeuchi, T., Yamamoto, Y., Midorikawa, M., Kasai, K., Hajjar, J. F., Hikino, T., Matsui, R., and Kishiki, S. (2011). “Response Prediction of Controlled Rocking Frame Using Buckling Restrained Brace: Shaking Table Tests on Controlled Rocking Steel Frames Using Multipurpose Inertial Mass System: Part II,” Journal of Structural and Construction Engineering, Architectural Institute of Japan, Vol. 76, No. 667, September, pp. 1695-1704 (in Japanese).

Takeuchi, T., Matsui, R., Hajjar, J. F., Nishimoto, K., and Aiken, I. (2008). “ Local Buckling Restraint Conditions for Core Plate in Buckling Restrained Braces,” Journal of Structural and Construction Engineering, Architectural Institute of Japan, Vol. 73, No. 634, pp. 2231-2238 (in Japanese).

Hajjar, J. F. (1993).  “Advanced Inelastic Analysis for LRFD Design:  Guidelines for Development and Use,” Plastic Hinge Based Methods for Advanced Inelastic Analysis and Design of Steel Frames:  An Assessment of the State-of-the-Art, White, D. W. and Chen, W.-F. (eds.), Structural Stability Research Council, Bethlehem, Pennsylvania, pp. 191-210.
 

Refereed Discussions

Leon, R. T., Perea, T. and Hajjar, J. F. (2010).  “Closure to Discussion of Limit State Response of Composite Columns and Beam-Columns. Part II: Application of Design Provisions for the 2005 AISC Specification,” Engineering Journal, American Institute of Steel Construction, Vol. 47, No. 2, Second Quarter, pp. 141-142.

Hajjar, J. F. and Abel, J. F. (1988).  “Discussion of 3D Beam-Column Element with Generalized Plastic Hinges,” Journal of Engineering Mechanics, American Society of Civil Engineers, Vol. 14, No. 2, February, pp. 367-369.
 

Refereed Papers in Conference Proceedings

Denavit, M. D., Hajjar, J. F., Perea, T., and Leon, R. T. (2016). “Seismic Behavior of Steel-Concrete Composite Frame Structures and Design Practice in the United States,” Composite Construction in Steel and Concrete VII, American Society of Civil Engineers, Reston, Virginia, pp. 534-547. (http://dx.doi.org/10.1061/9780784479735.041)

Perea, T., Leon, R. T., Denavit, M. D., and Hajjar, J. F. (2016). “Problems in Determining Buckling Loads of Slender Full-Scale Concrete-Filled Tube Specimens,” Composite Construction in Steel and Concrete VII, Bradford, M. and Uy, B. (eds.), American Society of Civil Engineers, Reston, Virginia, pp. 93-107. (http://dx.doi.org/10.1061/9780784479735.007)

Tort, C. and Hajjar, J. F. (2010). “A Mixed-Finite Element Approach for Performance-Based Design of Rectangular Concrete-Filled Steel Tube (RCFT) Frames,” Composite Construction in Steel and Concrete VI, Leon, R. T., Perea, T., Rassati, G. A., and Lange, J. (eds.), United Engineering Foundation, American Society of Civil Engineers, Reston, Virginia, pp. 591-603.

Tort, C. and Hajjar, J. F. (2005).  “Damage Assessment for Performance-Based Design of Rectangular Concrete-Filled Steel Tubes,” Composite Construction in Steel and Concrete V, Leon, R. T. and Lange, J. (eds.), United Engineering Foundation, American Society of Civil Engineers, Reston, Virginia, pp. 390-401.

 

Hajjar, J. F., Tong, X., Schultz, A. E., Shield, C. K., and Saari, W. K. (2000).  “Cyclic Behavior of Steel Frames with Composite Reinforced Concrete Infill Walls,” Composite Construction in Steel and Concrete IV, Hajjar, J. F., Hosain, M., Easterling, W. S., and Shahrooz, B. M. (eds.), United Engineering Foundation, American Society of Civil Engineers, Reston, Virginia, pp. 983-994.

Hajjar, J. F., Gourley, B. C., Schiller, P. H., Molodan, A., and Stillwell, K. A. (1997).  “Seismic Analysis of Concrete-Filled Steel Tube Beam-Columns and Three-Dimensional Composite Frames,” Composite Construction in Steel and Concrete III, Buckner, D. C. and Shahrooz, B. M. (eds.), Engineering Foundation, American Society of Civil Engineers, New York, New York, pp. 75-88.

Leon, R. T., Hajjar, J. F., and Shield, C. K. (1997).  “The Effect of Composite Floor Slabs on the Behavior of Steel Moment-Resisting Frames in the Northridge Earthquake,” Composite Construction in Steel and Concrete III, Buckner, D. C. and Shahrooz, B. M. (eds.), Engineering Foundation, American Society of Civil Engineers, New York, New York, pp. 735-751.

Papers in Conference Proceedings


Wang, L., Webster, M. D., and Hajjar, J. F. (2018). “Design for Deconstruction for Sustainable Composite Steel-Concrete Floor Systems,” Advances in Steel-Concrete Composite Structures, Valencia, Spain, June 27-29, 2018.

Padilla-Llano, D., Hajjar, J. F., Eatherton, M. R., Easterling, W. S., and Schafer, B. W. (2018). “Cyclic Fracture Simulation Framework for Modeling Collapse in Steel Structures,” Proceedings of the Eleventh U.S. National Conference on Earthquake Engineering, Los Angeles, California, June 25-29, 2018, Earthquake Engineering Research Institute, Oakland, California.

Thiagarajan, K. P., Lackner, M., Manwell, J. F., Breger, D., Arwade, S., Myers, A., Hajjar, J., Courtney, F., Hines, E., Niezrecki, C., Kirincich, A., Lohrenz, S., Cash, D. (2018). “The Massachusetts Research Partnership (MRP) and the Partnership for Offshore Wind Energy in the US (Power-US):  Implications for the Development of the Offshore Wind Energy Industry in the Commonwealth and the Nation,” Proceedings of the Offshore Technology Conference, Houston, Texas, April 30-May 3, 2018.

Padilla-Llano, D., Hajjar, J. F., Eatherton, M. R., Easterling, W. S., and Schafer, B. W. (2018). “Cyclic Fracture Simulation Framework for Stability and Collapse Simulation in Steel Structures,” Proceedings of the Structural Stability Research Council Annual Stability Conference, Baltimore, Maryland, April 10-13, 2018, Structural Stability Research Council, Chicago, Illinois.

Perea, T., Leon, R. T., Hajjar, J. F., Denavit, M. D. (2018). “Determination of the Buckling Critical Load for Composite Concrete-Filled Steel Tube Columns from Experimental Data:  A Southwell Plot Technique,” Proceedings of the Structural Stability Research Council Annual Stability Conference, Baltimore, Maryland, April 10-13, 2018, Structural Stability Research Council, Chicago, Illinois.

Peterman, K. D., Webster, M. D., D’Aloisio, J., and Hajjar, J. F. (2018).  “Cyclic Response of Steel Cladding Details with Fiber-Reinforced Polymer Shims,” Proceedings of the 9th International Conference on Behavior of Steel Structures in Seismic Areas (STESSA 2018), Christchurch, New Zealand, February 14-17, 2018, University of Canterbury, Christchurch, New Zealand.

Qiao, C., Myers, A. T., Hajjar, J. F., Arwade, S. R., and Pang, W. (2017). “Metamodeling of Hurricane-induced Conditions for Offshore Multi-Hazard Assessment,” Proceedings of the 12th International Conference on Structural Safety and Reliability (ICOSSAR 2017), Vienna, Austria, August 6-10, 2017, TU Vienna, Vienna, Austria.

Fontana, C. M., Arwade, S. R., DeGroot, D. J., Hallowell, S., Aubeny, C., Landon, M., Myers, A. T., Hajjar, J. F., and Ozmultu, S. (2017). “Multiline Anchor System for the OC4 Semisubmersible Floating Platform,” Proceedings of the 27th Ocean and Polar Engineering Conference (ISOPE-2017), San Francisco, California, June 25-30, 2017.

Wang, L., Webster, M. D., and Hajjar, J. F. (2017). “Experimental Investigation of Deconstructable Steel-Concrete Shear Connections in Sustainable Composite Beams,” Proceedings of the 2017 SEI Structures Congress, Denver, Colorado, April 5-7, 2017, American Society of Civil Engineers, Reston, Virginia.

Yan, Y. Güldür, B., and Hajjar, J. F. (2017). “Automated Structural Modelling of Bridges from Laser Scanning,” Proceedings of the 2017 SEI Structures Congress, Denver, Colorado, April 5-7, 2017, American Society of Civil Engineers, Reston, Virginia.

Peterman, K., Webster, M. D., D’Aloisio, J. A., and Hajjar, J. F. (2017). “End Plate Stability in Thermally-Improved Steel Cladding Details,” Proceedings of the Structural Stability Research Council Annual Stability Conference, San Antonio, Texas, March 21-24, 2017, Structural Stability Research Council, Chicago, Illinois.

Peterman, K., Moradei, J., D’Aloisio, J. A., Webster, M. D., and Hajjar, J. F. (2016). “Thermal and Structural Response of Thermal Break Strategies in Steel Building Structures,” Proceedings of the Composites and Advanced Materials Expo (CAMX 2016), Anaheim, California, September 26-29, 2016, American Composites Manufacturing Association, Tuckahoe, New York.

Guldur, B. and Hajjar, J. F. (2016). “Automated Classification of Detected Surface Damage from Point Clouds with Supervised Learning,” Proceedings of the 33rd International Symposium on Automation and Robotics in Construction (ISARC 2016), Auburn, Alabama, July 18-21, 2016, Auburn University, Auburn, Alabama.


Wei, K., Myers, A. T., Arwade, S. R., Hajjar, J. F., and Spencer, M. A. (2016). “Performance-based Design and the Load-deformation of Welded Tubular Connections in Offshore Jacket Structures,” Proceedings of the Eighth International Workshop on Connections in Steel Structures, Boston, Massachusetts, May 24-26, 2016, American Institute of Steel Construction, Chicago, Illinois.


Peterman, K., Moradei, J., D’Aloisio, J. A., Webster, M. D., and Hajjar, J. F. (2016). “Thermal Break Strategies for Cladding Systems in Building Structures,” Proceedings of the Eighth International Workshop on Connections in Steel Structures, Carter, C. J. and Hajjar, J. F. (eds.), Boston, Massachusetts, May 24-26, 2016, American Institute of Steel Construction, Chicago, Illinois.

Yan, Y., Guldur, B., Yoder, L., Kasireddy, V., Huber, D., Scherer, S., Akinci, B., and Hajjar, J. F. (2016).  "Automated Damage Detection and Structural Modelling with Laser Scanning," Proceedings of the Structural Stability Research Council Annual Stability Conference, Orlando, Florida, April 12-15, 2016, Structural Stability Research Council, Chicago, Illinois.   

Guldur, B. and Hajjar, J. F. (2015).  “Laser-based Condition Assessment Assistant for Bridges,” Proceedings of the 2015 International Symposium on Non-Destructive Testing in Civil Engineering, Berlin, Germany, September 15-17, 2015.
 
Leon, R. T., Hajjar, J. F., Perea, T. (2015). “Seismic Design of Composite Structures:  The AISC 2016 Seismic Provisions,” Proceedings of the Steel Innovations Conference 2015, Auckland, New Zealand, September 3-4, 2015, Steel Construction New Zealand, Manukau City, New Zealand.

Deniz, D., Song, J., and Hajjar, J. F. (2015).  “Energy-based Seismic Collapse Risk Assessment of Structures,” Proceedings of the 12th International Conference on Applications of Statistics and Probability in Civil Engineering (ICASP12),” Vancouver, Canada, July 12-15, 2015.

Wang, L., Webster, M. D., and Hajjar, J. F. (2015).  “Diaphragm Behavior of Deconstructable Composite Floor Systems,” Proceedings of the 8th International Conference on Behavior of Steel Structures in Seismic Areas (STESSA 2015), Shanghai, China, July 1-3, 2015, China Architecture & Building Press, Beijing, China.

Güldür, B., Yan, Y., and Hajjar, J. F. (2015).  “Condition Assessment of Bridges Using Terrestrial Laser Scanners,” Proceedings of the 2015 SEI Structures Congress, Portland, Oregon, April 23-25, 2015, ASCE, Reston, Virginia.

Wang, L., Webster, M. D., and Hajjar, J. F. (2015).  “Behavior of Deconstructable Steel-Concrete Shear Connections in Composite Beams,” Proceedings of the 2015 SEI Structures Congress, Portland, Oregon, April 23-25, 2015, ASCE, Reston, Virginia.

Wei, K., Arwade, S., Myers, A., Hallowell, S., Hajjar, J. F., and Hines, E. M. (2015).  “Performance Levels and Fragility for Offshore Wind Turbine Support Structures During Extreme Events,” Proceedings of the 2015 SEI Structures Congress, Portland, Oregon, April 23-25, 2015, ASCE, Reston, Virginia.

Denavit, M., Hajjar, J. F., Leon, R. T., and Perea, T. (2015).  “Advanced Analysis and Seismic Design of Concrete-Filled Steel Tube Structures,” Proceedings of the 2015 SEI Structures Congress, Portland, Oregon, April 23-25, 2015, ASCE, Reston, Virginia.

Peterman, K. D., D’Aloisio, J. A., Webster, M. D., and Hajjar, J. F. (2015).  “An Introduction to Thermal and Structural Response of Thermal Break Strategies in Steel Building Systems,” Proceedings of the Conference on Engineering Sustainability, Pittsburgh, Pennsylvania, April 19-21, 2015, ASCE, Reston, Virginia.

Güldür, B. and Hajjar, J. F. (2014). “Automated Damage Assessment from 3-D Laser Scans,” Proceedings of the 2014 Istanbul Bridge Conference, Istanbul, Turkey, August 11-13, 2014, Middle East Technical University, Ankara, Turkey.

Eatherton, M. R., Hajjar, J. F., and Deierlein, G. G. (2014).  “Application of Hybrid Simulation for Evaluating Design of a Rocking Steel Frame System,” Proceedings of the 10th National Conference on Earthquake Engineering, Anchorage, Alaska, July 21-25, 2014, Earthquake Engineering Research Institute, Oakland, California.

Steelman, J. S., Hajjar, J. F., LaFave, J. M., and Fahnestock, L. A. (2014). “Quantification and Calibration of Fuse Capacity for Elastomeric Bridge Bearings in Regions with High-Magnitude Earthquakes at Long Recurrence Intervals,” Proceedings of the 10th National Conference on Earthquake Engineering, Anchorage, Alaska, July 21-25, 2014, Earthquake Engineering Research Institute, Oakland, California.

Guldur, B. and Hajjar, J. F. (2014).  “Damage Detection on Structures Using Texture Mapped Laser Point Clouds,” Proceedings of the 2014 ASCE/SEI Structures Congress, Boston, Massachusetts, April 3-5, 2014.

Saykin, V. V., Nguyen, T. H., Hajjar, J. F., Deniz, D., and Song, J. (2014).  “Validation of a Finite Element Approach to Modeling of Structural Collapse of Steel Structures,” Proceedings of the ASCE/SEI Structures Congress 2014, Boston, Massachusetts, April 3-5, 2014.

Denavit, M. D., Hajjar, J. F., Leon, R. T., and Perea, T. (2014). “Analysis and Design of Steel-Concrete Composite Frame Systems,” Proceedings of the ASCE/SEI Structures Congress 2014, Boston, Massachusetts, April 3-5, 2014.

Valamanesh, V., Myers, A. T., Arwade, S. R., and Hajjar, J. F. (2014).  “The Impact of Peak Spectral Period as A Random Variable in the Design of Offshore Wind Turbines,” Proceedings of the ASCE/SEI Structures Congress 2014, Boston, Massachusetts, April 3-5, 2014.

Steelman, J. S, Hajjar, J. F., LaFave, J. M., and Fahnestock, L. A. (2014). “Quantification of Fuse Capacity for Elastomeric and Low-Profile Steel Fixed Bridge Bearings in Regions with High-Magnitude Earthquakes at Long Recurrence Intervals,” Proceedings of the ASCE/SEI Structures Congress 2014, Boston, Massachusetts, April 3-5, 2014.

Güldür, B. and Hajjar, J. F. (2013).  “Laser-based Automatic Cross-Sectional Change Detection for Steel Frames,” Proceedings of the 9th International Workshop on Structural Health Monitoring 2013, Stanford, California, September 10-12, 2013, Stanford University, Stanford, California.

Valamanesh, V., Myers, A. T., Hajjar, J. F., and Arwade, S. R. (2013). “Probabilistic Modeling of Joint Hurricane-induced Wind and Wave Hazards to Offshore Wind Farms on the Atlantic Coast,” Proceedings of the 11th International Conference on Structural Safety and Reliability (ICOSSAR 2013), New York, New York, June 16-20, 2013, Columbia University, New York, New York.

Carswell, W., Arwade, S.R., Myers, A.T. and Hajjar, J.F. (2013). “Reliability Analysis of Monopile Offshore Wind Turbine Support Structures,” Proceedings of the 11th International Conference on Structural Safety and Reliability (ICOSSAR 2013), New York, New York, June 16-20, 2013, Columbia University, New York, New York.

Deniz, D., Song, J., Hajjar, J. F., and Nguyen, T. H. (2013).  “Probabilistic Assessment of Dynamic Instability of Frame Structures Under Seismic Excitations,” Mini-Symposium on Resilient Structures, Infrastructures and Communities under Natural and Man-Made Hazards, Proceedings of the 11th International Conference on Structural Safety and Reliability (ICOSSAR 2013), New York, New York, June 16-20, 2013, Columbia University, New York, New York.

Steelman, J. S., Filipov, E. T., Revell, J. R., Fahnestock, L. A., Hajjar, J. F., Foutch, D. A. (2013). “Achieving Bridge Resilience through Economical Seismic ‘Quasi-Isolation’ Design using Common Bearing Component,” Proceedings of the Seventh National Seismic Conference on Bridges and Highways:  Bridge Resilience for Earthquakes and Other Natural Hazards, Oakland, California, May 20-22, 2013, Transportation Research Board, Washington, D.C.

Denavit, M. D., Hajjar, J. F., Perea, T., and Leon, R. T. (2013).  “Seismic Safety and United States Design Practice for Steel-Concrete Composite Frame Structures,” Proceedings of the 10th Conference or Urban Earthquake Engineering, Tokyo, Japan, March 1-2, 2013, Tokyo Institute of Technology, Tokyo, Japan.

Szyniszewski, S., Smith, B. H., Zeinoddini, V. M., Hajjar, J. F., Arwade, S. R., and Schafer, B. W. (2012).  “Towards the Design of Cold-Formed Steel Foam Sandwich Columns,” Proceedings of the 21st International Specialty Conference on Cold-Formed Steel Structures, St. Louis, Missouri, October 24-25, 2012, Center for Cold-Formed Steel Structures, Missouri University of Science and Technology, Rolla, Missouri.

Filipov, E. T., Revell, J. R., Steelman, J. S., Fahnestock, L. A., LaFave, J. M., Foutch, D. A., Hajjar, J. F. (2012). “Sensitivity of Quasi-isolated Bridge Seismic Response to Variations in Bearing and Backwall Elements,” Paper No. 2978, Proceedings of the 15th World Conference on Earthquake Engineering, Lisbon, Portugal, September 24-28, 2012.

Eatherton, M. R., Deierlein, G. G., Ma, X., Krawinkler, H., and Hajjar, J. F. (2012).  “Toward a Performance-Based Design Framework For Self-Centering Rocking Braced-Frame Spine Systems,” Paper 5388, Proceedings of the 15th World Conference on Earthquake Engineering, Lisbon, Portugal, September 24-28, 2012.

Liu, X., Fan, J., Tao, M., and Hajjar, J. F. (2012).  “Comparison and Analysis of Design Procedures for CFST-to-Steel Girder Composite Connection Panel Zone Shear Strength,” Proceedings of the 15th World Conference on Earthquake Engineering, Lisbon, Portugal, September 24-28, 2012.

Szyniszewski, S., Smith, B. H., Hajjar, J. F., Arwade, S. R., and Schafer, B. W. (2012). “Tensile and Shear Element Erosion in Metal Foams,” Proceedings of the 12th International LS-DYNAÒ Users Conference, Dearborn, Michigan, June 3-6, 2012, DYNAmore, Karlsruhe, Germany.

Denavit, M. D., Hajjar, J. F., and Leon, R. T. (2012). “Stability Analysis and Design of Steel-Concrete Composite Columns,” Proceedings of the Structural Stability Research Council Annual Stability Conference, Grapevine, Texas, April 17-20, 2012, SSRC, Rolla, Missouri.  Received the 2012 SSRC Vinnakota Award for the best paper presented by a student (M. Denavit).

Szyniszewski, S., Smith, B. H., Hajjar, J. F., Arwade, S. R., and Schafer, B. W. (2012). “Local Buckling Strength of Steel Foam Sandwich Panels,” Proceedings of the Structural Stability Research Council Annual Stability Conference, Grapevine, Texas, April 17-20, 2012, SSRC, Rolla, Missouri.

Smith, B. H., Szyniszewski, S., Hajjar, J. F., Schafer, B. W., and Arwade, S. R. (2012). “Material Characterization and Microstructural Simulation of Hollow Spheres and PCM Steel Foams,” Proceedings of the Structural Stability Research Council Annual Stability Conference, Grapevine, Texas, April 17-20, 2012, SSRC, Rolla, Missouri.

Deierlein, G. G., Eatherton, M., Ma, X., and Hajjar, J. F. (2012). “Design Features and Criteria for Controlled Rocking Braced-Frame Systems,” Proceedings of the 9th Conference or Urban Earthquake Engineering, Tokyo, Japan, March 6-8, 2012, Tokyo Institute of Technology, Tokyo, Japan.

Hajjar, J. F., Denavit, M. D., Perea, T., and Leon, R. T. (2012). “Seismic Design and Stability Assessment of Composite Framing Systems,” Proceedings of the 9th Conference or Urban Earthquake Engineering, Tokyo, Japan, March 6-8, 2012, Tokyo Institute of Technology, Tokyo, Japan. 

Leon, R. T., Perea, T., Hajjar, J. F., and Denavit, M. D. (2011).  “Concrete-filled Tubes Columns and Beam-Columns:  A Database for the AISC 2005 and 2010 Specifications,” Festschrift Gerhard Hanswille, Wuppertal, Germany, October 1-3, 2011,IKIB, Wuppertal, Germany, pp. 203-212.

Smith, B. H., Szyniszewski, S., Hajjar, J. F., Schafer, B. W., and Arwade, S. R. (2011).  “Characterization of Steel Foams for Structural Components,” Proceedings of the 7th International Conference on Porous Metals and Metallic Foams (MetFoam 2011), BEXCO, Busan, South Korea, September 18-21, 2011.

Deierlein, G. G., Ma, X., Eatherton, M. R., Hajjar, J. F., Krawinkler, H., Takeuchi, T., Midorikawa, M., and Hikino, T. (2011). “Earthquake Resilient Steel Braced Frames with   Controlled Rocking and Energy Dissipating Fuses,” Proceedings of the 6th European Conference on Steel and Composite Structures (Eurosteel 2011), Budapest, Hungary, August 31-September 2, 2011.

Takeuchi, T., Midorikawa, M., Kasai, K., Yamamoto, Y., Deierlein, G. G., Ma, X., Hajjar, J. F., and Hikino, T. (2011). “Shaking Table Test of Controlled Rocking Frames using Multipurpose Test Bed,” Proceedings of the 6th European Conference on Steel and Composite Structures (Eurosteel 2011), Budapest, Hungary, August 31-September 2, 2011.

Pallarés, L. and Hajjar, J. F. (2011).  “Design of Headed Steel Stud Anchors in Composite Structures,” Proceedings of the 6th European Conference on Steel and Composite Structures (Eurosteel 2011), Budapest, Hungary, August 31-September 2, 2011.

Denavit, M. D., Borello, D. J., and Hajjar, J. F. (2011).  “Behavior and Design of Bolted Steel Slip-Critical Connections with Fillers,” Proceedings of the 6th European Conference on Steel and Composite Structures (Eurosteel 2011), Budapest, Hungary, August 31-September 2, 2011.

Hajjar, J. F. and Denavit, M. D. (2011). “New Trends for Seismic Engineering of Steel and Composite Structures,” Third International Symposium on Innovative Design of Steel Structures, Singapore and Hong Kong, June 28-30, 2011, University of Hong Kong, Hong Kong, pp. 41-56. 

Smith, B. H., Arwade, S. R., Szynizewski, S., Schafer B. W., and Hajjar, J. F. (2011). “Computational Modeling of Cellular Metals with Random Microstructures,” 2011 Engineering Mechanics Institute Conference, American Society of Civil Engineers, Northeastern University, Boston, Massachusetts, June 2-4, 2011, Northeastern University, Boston, Massachusetts.

Denavit, M. D., Hajjar, J. F., and Leon, R. T. (2011).  “Seismic Behavior of Steel Reinforced Concrete Beam-Columns and Frames,” Proceedings of the ASCE/SEI Structures Congress 2011, Las Vegas, Nevada, April 14-16, 2011, ASCE, Reston, Virginia.

Filipov, E. T., Hajjar, J. F., Steelman, J. S., Fahnestock, L. A., LaFave, J. M., and Foutch, D.A. (2011).  “Computational Analyses of Quasi-Isolated Bridges with Fusing Bearing Components,” Proceedings of the ASCE/SEI Structures Congress 2011, Las Vegas, Nevada, April 14-16, 2011, ASCE, Reston, Virginia.

Steelman, J. S., Fahnestock, L. A., LaFave, J. M., Hajjar, J. F., Filipov, E. T., and Foutch, D.A. (2011).  “Seismic Response of Bearings for Quasi-Isolated Bridges – Testing and Component Modeling,” Proceedings of the ASCE/SEI Structures Congress 2011, Las Vegas, Nevada, April 14-16, 2011, ASCE, Reston, Virginia.

Song, J., Deniz, D., Hajjar, J. F., and Nguyen, T. H. (2011).  “An Integrated Platform for Validated Prediction of Collapse of Structures,” Engineering for Sustainability and Prosperity, Proceedings of the National Science Foundation CMMI Research and Innovation Conference 2011, Atlanta, Georgia, January 4-7, 2011, National Science Foundation, Arlington, Virginia.

Arwade, S. R., Hajjar, J. F., Schafer, B. W., Moradi, M., Smith, B. H., and Szyniszewski, S. (2011).  “Steel Foam Material Processing, Properties, and Potential Structural Applications,” Engineering for Sustainability and Prosperity, Proceedings of the National Science Foundation CMMI Research and Innovation Conference 2011, Atlanta, Georgia, January 4-7, 2011, National Science Foundation, Arlington, Virginia.

Eatherton, M., Hajjar, J. F., Deierlein, G. G., Ma, X., and Krawinkler, H. (2010).  “Hybrid Simulation Testing of a Controlled Rocking Steel Braced Frame System,” Proceedings of the 9th National Conference on Earthquake Engineering, Rathje, E. M. and Atkinson, G. A. (eds.), Toronto, Canada, July 12-14, 2010, Earthquake Engineering Research Institute, Oakland, California.

Ma, X., Deierlein, G. G., Eatherton, M., Krawinkler, H., Hajjar, J. F., Takeuchi, T., Kasai, K., Midorikawa, M., and Hikino, T. (2010).  “Large-Scale Shaking Table Test of Steel Braced Frame with Controlled Rocking and Energy-Dissipating Fuses,” Proceedings of the 9th National Conference on Earthquake Engineering, Rathje, E. M. and Atkinson, G. A. (eds.), Toronto, Canada, July 12-14, 2010, Earthquake Engineering Research Institute, Oakland, California.

Perea, T., Leon, R. T., Denavit, M., and Hajjar, J. F. (2010).  “Experimental Tests on Cyclic Beam-Column Interaction Strength of Concrete-Filled Steel Tubes,” Proceedings of the 9th National Conference on Earthquake Engineering, Rathje, E. M. and Atkinson, G. A. (eds.), Toronto, Canada, July 12-14, 2010, Earthquake Engineering Research Institute, Oakland, California.

Denavit, M. D., Hajjar, J. F., Perea, T., and Leon, R. T. (2010).  “Cyclic Evolution of Damage and Beam-column Interaction Strength of Concrete-Filled Steel Tube Beam-Columns,” Proceedings of the 9th National Conference on Earthquake Engineering, Rathje, E. M. and Atkinson, G. A. (eds.), Toronto, Canada, July 12-14, 2010, Earthquake Engineering Research Institute, Oakland, California.

Steelman, J. S. and Hajjar, J. F. (2010).  “Systemic Uncertainties and Decision Support Applications in Regional Seismic Loss Analyses,” Proceedings of the 9th National Conference on Earthquake Engineering, Rathje, E. M. and Atkinson, G. A. (eds.), Toronto, Canada, July 12-14, 2010, Earthquake Engineering Research Institute, Oakland, California.

Steelman, J. S., Hajjar, J. F., LaFave, J. M., Fahnestock, L. A., and Filipov, E. T. (2010).  “Bridge Bearing Fuse systems for regions with high-magnitude earthquakes at Long Recurrence Intervals,” Proceedings of the 9th National Conference on Earthquake Engineering, Rathje, E. M. and Atkinson, G. A. (eds.), Toronto, Canada, July 12-14, 2010, Earthquake Engineering Research Institute, Oakland, California.

Hajjar, J. F., Eatherton, M., Ma, X., Krawinkler, H., and Deierlein, G. G. (2010).  “Seismic Design and Behavior of Steel Frames with Controlled Rocking – Part I:  Concepts and Quasi-Static Subassembly Testing,” Proceedings of the ASCE/SEI Structures Congress 2010, Orlando, Florida, May 12-15, 2010, ASCE, Reston, Virginia.

Ma, X., Eatherton, M., Hajjar, J. F., Krawinkler, H. and Deierlein, G. G., (2010).  “Seismic Design and Behavior of Steel Frames with Controlled Rocking – Part II:  Large Scale Shake Table Testing and System Collapse Analysis,” Proceedings of the ASCE/SEI Structures Congress 2010, Orlando, Florida, May 12-15, 2010, ASCE, Reston, Virginia.

Borello, D. J., Andrawes, B., Hajjar, J. F., and Olson, S. M. (2010).  “Experimental and Analytical Forensic Investigation of Bridge Timber Piles under Eccentric Loads,” Proceedings of the ASCE/SEI Structures Congress 2010, Orlando, Florida, May 12-15, 2010, ASCE, Reston, Virginia.

Jacobs, W. P. and Hajjar, J. F. (2010).  “Load Transfer in Composite Construction,” Proceedings of the ASCE/SEI Structures Congress 2010, Orlando, Florida, May 12-15, 2010, ASCE, Reston, Virginia.

Hajjar, J. F., Eatherton, M., Ma, X., Deierlein, G. G., and Krawinkler, H. (2010).  “Seismic Resilience of Self-Centering Steel Braced Frames with Replaceable Energy-Dissipating Fuses – Part I:  Large-Scale Cyclic Testing,” Proceedings of the Seventh International Conference on Urban Earthquake Engineering, Tokyo, Japan, March 3-5, 2010, Center for Urban Earthquake Engineering, Tokyo Institute of Technology, Tokyo, Japan.

Deierlein, G. G., Ma, X., Hajjar, J. F., Eatherton, M., Krawinkler, H., Takeuchi, T., Midorikawa, M., Hikino, T., and Kasai, K. (2010).  “Seismic Resilience of Self-Centering Steel Braced Frames with Replaceable Energy-Dissipating Fuses – Part 2:  E-Defense Shake Table Test,” Proceedings of the Seventh International Conference on Urban Earthquake Engineering, Tokyo, Japan, March 3-5, 2010, Center for Urban Earthquake Engineering, Tokyo Institute of Technology, Tokyo, Japan.

Tobias, D. H., Hajjar, J. F., Anderson, R. E., LaFave, J. M., Hodel, C. E., Fahnestock, L. A., Kramer, W. M., Steelman, J. S., Claussen, P. D., Riechers, K. L., and Shaffer, M. D. (2009).  “Development and Refinement of Illinois’ Earthquake Resisting System Strategy,” Proceedings of the 25th U.S.-Japan Bridge Engineering Workshop, PWRI Report No. 4172, Tsukuba, Japan, October 17-20, 2009, pp. 331-344.

Leon, R. T., Perea, T., Hajjar, J. F., and Denavit, M. D. (2009).  “Determination of Buckling Loads from Triaxial Load Tests of Slender Concrete-Filled Steel Tube Beam-Columns,” Proceedings of the Third International Conference on Advances in Experimental Structural Engineering, San Francisco, California, October 15-16, 2009, Pacific Earthquake Engineering Research Center, University of California, Berkeley, California.

Denavit, M., Hajjar, J. F., Perea, T., and Leon, R. T. (2009).  “Seismic Multi-Axial Behavior of Concrete-Filled Steel Tube Beam-Columns,” Proceedings of the Asian-Pacific Network of Centers for Earthquake Engineering Research, Department of Civil and Environmental Engineering, Urbana, Illinois, August 13-14, 2009, Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois.

Deierlein, G. G., Hajjar, J. F., Eatherton, M., Billington, S., Krawinkler, H. , Ma, X. (2009).  “Seismically Resilient Steel Braced Frame Systems with Controlled Rocking and Energy Dissipating Fuses,” Proceedings of the 7th Annual Meeting of the George E. Brown, Jr. Network for Earthquake Engineering Simulation, Honolulu, Hawaii, June 23-26, 2009, NEES, Inc., Davis, California.

Eatherton, M., Hajjar, J. F., Deierlein, G. G., Ma, X., Billington, S., and Krawinkler, H. (2009). “Steel-Framed Rocking Structural Systems for Moderate Seismic Zones,” Proceedings of the ASCE/SEI Structures Congress 2009, Austin, Texas, April 30-May 2, 2009, ASCE, Reston, Virginia.

Steelman, J. S. and Hajjar, J. F. (2009). “Mitigation Strategies for Regional Loss Assessment,” Proceedings of the Sixth International Conference on Urban Earthquake Engineering, Tokyo, Japan, March 3-4, 2009, Center for Urban Earthquake Engineering, Tokyo Institute of Technology, Tokyo, Japan, pp. 665-670.

Deierlein, G. G., Ma, X., Eatherton, M. Krawinkler, H., Billington, S., and Hajjar, J. F. (2009). “Collaborative Research on Development of Innovative Steel Braced Frame Systems with Controlled Rocking and Replaceable Fuses,” Proceedings of the Sixth International Conference on Urban Earthquake Engineering, Tokyo, Japan, March 3-4, 2009, Center for Urban Earthquake Engineering, Tokyo Institute of Technology, Tokyo, Japan, pp. 413-417.

Matsui, R., Takeuchi, T., Hajjar, J. F., Nishimoto, K., and Aiken, I. (2008). “Local Buckling Restraint Conditions for Core Plates in Buckling Restrained Braces,” Proceedings of the 14th World Conference on Earthquake Engineering, Beijing, China, October 12-17, 2008.

Eatherton, M., Hajjar, J. F., Deierlein, G. G., Krawinkler, H., Billington, S., and Ma, X. (2008). “Controlled Rocking of Steel-Framed Buildings with Replaceable Energy-Dissipating Fuses,” Proceedings of the 14th World Conference on Earthquake Engineering, Beijing, China, October 12-17, 2008.

Tort, C. and Hajjar, J. F. (2008). “Seismic Design and Analysis of Rectangular Concrete Filled Steel Tube (RCFT) Members and Frames,” Proceedings of the 14th World Conference on Earthquake Engineering, Beijing, China, October 12-17, 2008.

Hajjar, J. F., Eatherton, M., Deierlein, G. G., Ma, X., Pena, A., Krawinkler, H., and Billington, S. (2008). “Controlled Rocking of Steel Framed Buildings as a Sustainable New Technology for Seismic Resistance in Buildings,” Creating and Renewing Urban Structures, Chicago, Illinois, September 17-19, 2008, International Association for Bridge and Structural Engineering, Zurich, Switzerland.

Tort, C. and Hajjar, J. F. (2007). “A Mixed Finite Element Approach for Nonlinear Dynamic Analysis of Composite Rectangular Concrete-Filled Steel Tube (RCFT) Frames,” Proceedings of Computational Methods in Structural Dynamics and Earthquake Engineering, Rethymno, Greece, June 13-16, 2007, National Technical University of Athens, Athens, Greece.

Deierlein, G. G., Cordova, P., Borchers, E., Hall, K., Hajjar, J. F., Billington, S., Krawinkler, H., and Mar, D. (2007). “Seismic Performance of Braced Frames with Controlled Rocking and Energy Dissipating Fuses,” Proceedings of the ASCE/SEI Structures Congress 2007, Long Beach, California, May 17-19, 2007, ASCE, Reston, Virginia.

Tort, C. and Hajjar, J. F. (2007).  “A Performance-Based Design Approach for Rectangular Concrete-Filled Steel Tube (RCFT) Frames under Seismic Loading,” Proceedings of the ASCE/SEI Structures Congress 2007, Long Beach, California, May 17-19, 2007, ASCE, Reston, Virginia.

Surovek, A., White, D., Ziemian, R. Camotim, D., Hajjar, J., and Teh, L., (2007).  “Recommendations for the Use of Direct Second-Order Inelastic Analysis for the Design of Steel Structures,” Proceedings of the Structural Stability Research Council Annual Stability Conference, New Orleans, Louisiana, April 18-21, 2007, SSRC, Rolla, Missouri.

Tort, C. and Hajjar, J. F. (2006). “Seismic Demand and Capacity Evaluation of Rectangular Concrete-Filled Steel Tube (RCFT) Members and Frames,” Proceedings of the Fifth Behaviour of Steel Structures in Seismic Areas (STESSA 2006), Mazzolani, F. M. (ed.), Yokohama, Japan, August 14-17, 2006, Taylor and Francis, London, pp. 651-656.

Krzmarzick, D. and Hajjar, J. F. (2006).  “Load Rating of Curved Composite Steel I-Girder Bridges through Load Testing with Heavy Trucks,” Proceedings of the ASCE Structures Congress 2006, St. Louis, Missouri, May 18-20, 2006, ASCE, Reston, Virginia.

Surovek, A., Camotim, D., Hajjar, J., Teh, L., White, D., and Ziemian, R. (2006).  “Direct Second-Order Analysis for the Design of Steel Structures,” Proceedings of the ASCE Structures Congress 2006, St. Louis, Missouri, May 18-20, 2006, ASCE, Reston, Virginia.

Tort, C. and Hajjar, J. F. (2006).  “Development of Seismic Demand and Capacity Assessment Methodology for Rectangular Concrete-Filled Steel Tube (RCFT) Members and Frames,” Proceedings of the Eighth National Conference on Earthquake Engineering, San Francisco, California, April 18-22, 2006, Earthquake Engineering Research Institute, Oakland, California.

Elnashai, A. S. and Hajjar, J. F. (2006).  “Mid-America Earthquake (MAE) Center Program in Consequence-Based Risk Management,” Proceedings of the Eighth National Conference on Earthquake Engineering, San Francisco, California, April 18-22, 2006, Earthquake Engineering Research Institute, Oakland, California.

Hajjar, J. F. and Elnashai, A. S. (2006).  “Models for Seismic Vulnerability in the Mid-America Earthquake Center,” Proceedings of the Eighth National Conference on Earthquake Engineering, San Francisco, California, April 18-22, 2006, Earthquake Engineering Research Institute, Oakland, California.

Elnashai, A. S. and Hajjar, J. F. (2005).  “Mid-America Earthquake (MAE) Center Program in Seismic Risk Management,” HAZTURK-2005:  Strategies for an Earthquake Loss Estimation Program for Turkey, Sahin, M., Karaca, M., and Ormeci, C. (eds.), Istanbul, Turkey, December 1-2, 2005, Istanbul Technical University, Istanbul, Turkey, pp. 65-73.

Hajjar, J. F. and Elnashai, A. S. (2005).  “Vulnerability Modeling in the MAE Center,” HAZTURK-2005:  Strategies for an Earthquake Loss Estimation Program for Turkey, Sahin, M., Karaca, M., and Ormeci, C. (eds.), Istanbul, Turkey, December 1-2, 2005, Istanbul Technical University, Istanbul, Turkey, pp. 97-110.

French, C. W., Shield, C. K., Hajjar, J. F., Schultz, A. E., Bergson, P. M., Daugherty, D. J., Wan, C. P., Ernie, D. W., Du, D. H.-C., and Nesvold, S. (2005). “Multiaxial Subassemblage Testing (MAST) System,” Grand Challenges in Earthquake Engineering 250 Years after the 1755 Lisbon Earthquake, Proceedings of the First U.S.-Portugal International Workshop, Barros, J. and Silva, P. (eds.), Lamego City, Portugal, July 11-14, 2005, 23.1-23.10.

Tort, C. and Hajjar, J. F. (2005). “Capacity Assessment of Rectangular Concrete-Filled Steel Tube (RCFT) Members and Connections in Composite Frames,” Proceedings of the American Society of Civil Engineering Structures Congress '05, New York, New York, April 20-24, 2005, ASCE, Reston, Virginia.

Hajjar, J. F. and Dexter, R. J. (2005). “Column Reinforcement Design for Seismic and Non-Seismic Moment-Resisting Connections in Steel Frame Structures,” T. R. Higgins Lectureship Award Presentation, Proceedings of the North American Steel Construction Conference, April 6-9, 2005, Montreal, Canada, American Institute of Steel Construction, Chicago, Illinois.

French, C. W., Schultz, A. E., Hajjar, J. F., Shield, C. K., Ernie, D. W., Dexter, R. J., Du, D. H.-C., Olson, S. A., Daugherty, D. J., and Wan, C. P. (2004). “Multi-Axial Subassemblage Testing (MAST) System: Description And Capabilities,” Paper No. 2146, Proceedings of the 13th World Conference on Earthquake Engineering, Vancouver, British Columbia, Canada, August 1-6, 2004, Canadian Association for Earthquake Engineering, Ottawa, Ontario, Canada.

Dexter, R. J., Hajjar, J. F., and Lee, D. (2004). “Effect of Column Stiffener Detailing and Weld Fracture Toughness on the Performance of Welded Moment Connections,” Connections in Steel Construction V: Innovations in Steel Connections, Amsterdam, the Netherlands, June 3-4, 2004, European Convention for Constructional Steelwork, Amsterdam, the Netherlands.

Hajjar, J. F., Dexter, R. J., Lee, D., Cotton, S. C., Ojard, S. D., and Ye, Y. (2004). “Column Stiffener Detailing for Non-Seismic and Seismic Design,” Proceedings of the North American Steel Construction Conference, Long Beach, California, March 24-27, 2004, American Institute of Steel Construction, Chicago, Illinois.

Tort, C. and Hajjar, J. F. (2003). “Damage Measures for Performance-Based Design of Rectangular Concrete-Filled Steel Tube Members and Connections,” International Workshop on Steel and Concrete Composite Construction (IWSCCC-2003), National Center for Research on Earthquake Engineering, Taipei, Taiwan, October 8-9, 2003, National Center for Research on Earthquake Engineering, Taipei, Taiwan, pp. 35-46.

Rassati, G. A., Hajjar, J. F., Schultz, A. E., and Shield, C. K. (2003). “Cyclic Analysis of PR Steel Frames with Composite Reinforced Concrete Infill Walls,” Proceedings of Advances in Structures: Steel, Composite and Aluminum (ASSCA) ’03, Sydney, Australia, June 23-25, 2003, Association for International Cooperation and Research in Steel-Concrete Composite Structures, Sydney, Australia, pp. 1259-1265.

Hajjar, J. F., Dexter, R. J., Lee, D., Cotton, S. C., Ojard, S. D., and Ye, Y. (2003). “Seismic Detailing of Column Stiffeners in Steel Moment-Resisting Connections,” Proceedings of the Fourth International Conference on the Behaviour of Steel Structures in Seismic Areas (STESSA 2003), Mazzolani, F. M. (ed.)., Naples, Italy, June 9-12, 2003, A. A. Balkema Publishers, the Netherlands, pp. 307-312.

Hajjar, J. F. and Leon, R. T. (2003). “Proposed Revisions to Composite Column Provisions (Chapter I) of the AISC Specification,” Paper No. 356, Proceedings of the American Society of Civil Engineers Structures Congress ’03, Lowes, L. N. and Miller, G. R. (eds.), Seattle, Washington, May 29-June 1, 2003, ASCE, Reston, Virginia.

Leon, R. T. and Hajjar, J. F. (2003). “Proposed Revisions to Composite Flexural Member Provisions (Chapter I) of the AISC Specification,” Paper No. 396, Proceedings of the American Society of Civil Engineers Structures Congress ’03, Lowes, L. N. and Miller, G. R. (eds.), Seattle, Washington, May 29-June 1, 2003, ASCE, Reston, Virginia.

Schultz, A. E., French, C. W., Hajjar, J. F., Shield, C. K., Dexter, R. J., Ernie, D. W., Du., D. H.-C., and Polley, C. (2003). “Implementation of a Multi-Axial Subassemblage Testing (MAST) Laboratory System,” Paper No. 559, Proceedings of the American Society of Civil Engineers Structures Congress ’03, Lowes, L. N. and Miller, G. R. (eds.), Seattle, Washington, May 29-June 1, 2003, ASCE, Reston, Virginia.

French, C. W., Schultz, A. E., Hajjar, J. F., Shield, C. K., Ernie, D. W., Dexter, R. J., Du., D. H.-C., and Bergson, P. M. (2002). “A System for Multi-Axial Subassemblage Testing (MAST): Design Concepts and Capabilities,” Paper No. NS-1a, Proceedings of the Seventh National Conference on Earthquake Engineering, Boston, Massachusetts, July 21-25, 2002, Earthquake Engineering Research Institute, Oakland, California.

Deierlein, G. D., Hajjar, J. F., Yura, J. A., White, D. W., and Baker, W. F. (2002). “Proposed New Requirements for Frame Stability using Second-Order Analysis,” Proceedings of the Structural Stability Research Council Annual Stability Conference, Seattle, Washington, April 24-27, 2002, SSRC, Gainesville, Florida, pp. 1-20.

Hajjar, J. F., French, C. W., Schultz, A. E., Shield, C. K., Ernie, D. W., Dexter, R. J., Du., D. H.-C., and Bergson, P. M. (2002). “A System for Multi-Axial Subassemblage Testing (MAST): Initial Developments,” Performance of Structures - from Research to Design, Proceedings of the American Society of Civil Engineers Structures Congress '02, Denver, Colorado, April 4-6, 2002, ASCE, Reston, Virginia, pp. 313-314.

Hajjar, J. F. and Ray, J. D. (2002). “Correlation of Measured and Computed Dead and Live Load Stresses in a Steel Curved Girder Bridge,” Performance of Structures - from Research to Design, Proceedings of the American Society of Civil Engineers Structures Congress '02, Denver, Colorado, April 4-6, 2002, ASCE, Reston, Virginia, pp. 241-242.

Hajjar, J. F., French, C. W., Eppers, L. J., and Le, Q. (2002). “Transverse Cracking in Concrete Bridge Decks,” Performance of Structures - from Research to Design, Proceedings of the American Society of Civil Engineers Structures Congress '02, Denver, Colorado, April 4-6, 2002, ASCE, Reston, Virginia, pp. 359-360.

Tong, X., Hajjar, J. F., Schultz, A. E., and Shield, C. K. (2002). “Cyclic Response of Composite Steel Frames with Composite Reinforced Concrete Infill Walls,” Performance of Structures - from Research to Design, Proceedings of the American Society of Civil Engineers Structures Congress '02, Denver, Colorado, April 4-6, 2002, ASCE, Reston, Virginia, pp. 269-270.

Prochnow, S. D., Ye., Y., Dexter, R. J., Hajjar, J. F., and Cotton, S. C. (2002).  “Local Flange Bending and Local Web Yielding Limit States in Steel Moment-Resisting Connections,” Connections in Steel Structures IV, Roanoke, Virginia, October 22-24, 2000, American Institute of Steel Construction, Chicago, Illinois, pp. 318-328.

Nozaka, K., Shield, C. K., and Hajjar, J. F. (2001). “Repair of Fatigued Steel Bridge Girders with Carbon Fiber Strips,” Proceedings of the Fifth National Science Foundation Workshop on Bridge Research in Progress, Minneapolis, Minnesota, October 8-10, 2001, pp. 271-276.

Hajjar, J. F. (2001).  “Composite Construction for Wind and Seismic Engineering,” Proceedings of the Annual Technical Session and Meeting, Structural Stability Research Council, Fort Lauderdale, Florida, May 9-12, 2001, SSRC, Gainesville, Florida, pp. 209-228.

Dexter, R. J., Hajjar, J. F., Prochnow, S. D., Graeser, M. D., Galambos, T. V., and Cotton, S. C. (2001).  “Evaluation of the Design Requirements for Column Stiffeners and Doublers and the Variation in Properties of A992 Shapes,” Proceedings of the North American Steel Construction Conference, Fort Lauderdale, Florida, May 9-12, 2001, AISC, Chicago, Illinois, pp. 14.1-14.21.

Cotton, S. C., Prochnow, S. D., Ye, Y., Hajjar, J. F., and Dexter, R. J. (2000).  “Seismic Detailing of Continuity Plates and Web Doubler Plates in Steel Moment-Resisting Connections,”  Proceedings of the Fourth Workshop on Fracture Issues in Steel Buildings Subjected to Earthquakes, U.S.-Japan Partnership for Advanced Steel Structures, San Francisco, California, February 28-29, 2000.

Schultz, A. E., Hajjar, J. F., Shield, C. K., Saari, W. K., and Tong, X. (2000).  “Study of the Cyclic Interaction In Steel Frames with Composite RC Infill Walls,” Paper No. 2727, Proceedings of the Twelfth World Congress on Earthquake Engineering, Auckland, New Zealand, January 30-February 4, 2000.

Hajjar, J. F., Galambos, T. V., Huang, W.-H., Pulver, B. E., Leon, R. T., and Rudie, B. J. (1999).  “Measured vs. Computed Stresses in a Curved Steel Bridge,” Structural Engineering in the 21st Century, Proceedings of the American Society of Civil Engineers Structures Congress '99, Avent, R. R. and Alawady, M. (eds.), New Orleans, Louisiana, April 18-21, 1999, ASCE, Reston, Virginia, pp. 231-234.

Schultz, A. E., Hajjar, J. F., Shield, C. K., Saari, W., and Tong, X. (1998).  “RC Infills in Steel Frames as Composite Systems for Seismic Resistance,” Paper No. T186-2, Proceedings of the First Structural Engineers World Congress, San Francisco, California, July 19-23, 1998, Elsevier Science Ltd., Oxford, U.K.

Zofkie, R. D. and Hajjar, J. F. (1998).  “Non-Iterative Calculation of Steel Beam-Column Inelastic Axial Design Strength,” Paper No. T203-3, Proceedings of the First Structural Engineers World Congress, San Francisco, California, July 19-23, 1998, Elsevier Science Ltd., Oxford, U.K.

Hajjar, J. F., Leon, R. T., Shield, C. K., and Dexter, R. J. (1998).  “Structural Behavior and Weld Joint Performance in Steel Moment-Resisting Frame Connections,”  Proceedings of the Third U.S.-Japan Workshop on Steel Fracture Issues, U.S.-Japan Partnership for Advanced Steel Structures, Tokyo, Japan, April 20-22, 1998, Building Research Institute, Tsukuba, Japan, September, pp. 419-428.

Leon, R. T., Hajjar, J. F., Shield, C. K., and Gustafson, M. A. (1998).  “The Effect of Composite Floor Behavior on the Failure of Steel Moment-Resisting Connections,”  Proceedings of the NEHRP Conference and Workshop on Research on the Northridge, California Earthquake of January 17, 1994, Los Angeles, California, August 20-23, 1997, California Universities for Research in Earthquake Engineering, Richmond, California, 1998, Volume III-B, Engineering, pp. 629-636.

Schiller, P. H., Hajjar, J. F., and Molodan, A. (1997).  “Nonlinear Analysis of Composite Concrete-Filled Steel Tube Frames,” Composite Construction -- Conventional and Innovative, Innsbruck, Austria, September 16-18, 1997, International Association for Bridge and Structural Engineering, Zurich, Switzerland, pp. 283-288.

Earls, C. J., Galambos, T. V., and Hajjar, J. F. (1997).  “On Inelastic Buckling of High Strength Steel Beams Under Moment Gradient,” Proceedings of the Structural Stability Research Council Annual Technical Session and Meeting, Toronto, Canada, June 9-11, 1997, Structural Stability Research Council, Bethlehem, Pennsylvania, pp. 553-568.

White, D. W. and Hajjar, J. F. (1997).  “Stability of Steel Frames:  The Cases for Simple Elastic and Rigorous Inelastic Analysis/Design Procedures,” Innovations in Structural Design:  Strength, Stability, Reliability.  Proceedings of the Symposium Honoring Theodore V. Galambos, Hajjar, J. F. and Leon, R. T. (eds.), Minneapolis, Minnesota, June 6-7, 1997, Structural Stability Research Council, Bethlehem, Pennsylvania, pp. 111-122.

Leon, R. T. and Hajjar, J. F. (1997).  “Effect of Floor Slabs on Behavior of Full Moment Steel Connections,” Building to Last, Proceedings of the American Society of Civil Engineers Structures Congress '97, Kempner, L. and Brown, C. B. (eds.), Portland, Oregon, April 13-16, 1997, ASCE, New York, pp. 772-776.

Schultz, A. E., French, C. F., Galambos, T. V., Hajjar, J. F., Shield, C. K., and Stolarski, H. K. (1997).  “Recent Developments and Future Directions in Assessment Technology and Earthquake Engineering,” Civil Infrastructure Systems for the Next Century:  A Global Partnership in Research, Proceedings of the First US/Eastern European Joint Seminar on Assessment Technology and Earthquake Engineering, Saiidi, M. S., Brandt, A. M., and Cyrul, T. (eds.), Warsaw, Poland, October 2-4, 1996, National Science Foundation, Arlington, Virginia, pp. 181-186.

Hajjar, J. F. and Leon, R. T. (1996).  “Effect of Floor Slabs on the Performance of SMR Connections,” Paper No. 656, Proceedings of the Eleventh World Congress on Earthquake Engineering, Sociedad Mexicana de Ingenieria, Sismica, A. C. (ed.), Acapulco, Mexico, June 23-28, 1996, Elsevier Science Publishers, New York.  One of only 10% of all papers in the proceedings that were accepted for oral presentation.

Hajjar, J. F., Gourley, B. C., and Stillwell, K. (1996).  “Cyclic Analysis of Concrete-Filled Tubes and Design of Composite Frames,” Analysis and Computation, Proceedings of the Twelfth Conference held in Conjunction with the American Society of Civil Engineers Structures Congress '96, Cheng, F. Y. (ed.), Chicago, Illinois, April 15-18, 1996, ASCE, New York, pp. 43-54.

Hajjar, J. F. and White, D. W. (1995).  “Stability Provisions in the 1993 AISC LRFD Specification,” Restructuring:  America and Beyond, Proceedings of the American Society of Civil Engineers Structures Congress '95, Sanayei, M. (ed.), Boston, Massachusetts, April 2-5, 1995, ASCE, New York, pp. 726-729.

Hajjar, J. F. and White, D. W. (1995).  “Effective Length and Equivalent Imperfection Approaches for Assessing Frame Stability,” Restructuring:  America and Beyond, Proceedings of the American Society of Civil Engineers Structures Congress '95, Sanayei, M. (ed.), Boston, Massachusetts, April 2-5, 1995, ASCE, New York, pp. 1785-1788.

Abdelrazaq, A., Baker, W., Hajjar, J. F., and Sinn, W. (1993).  “Column Buckling Considerations in High-Rise Buildings with Mega-Bracing,” Is Your Structure Suitably Braced?, Proceedings of the Structural Stability Research Council Annual Technical Session and Meeting, Milwaukee, Wisconsin, April 6-7, 1993, SSRC, Bethlehem, Pennsylvania, pp. 155-169.

Hajjar, J. F. and White, D. W. (1992).  “On the Need for the Effective Length Concept in LRFD,” Proceedings of the American Society of Civil Engineers Structures Congress '92, Morgan, J. (ed.), San Antonio, Texas, April 13-16, 1992, ASCE, New York, pp. 334-337.

White, D. W. and Hajjar, J. F. (1990).  “Application of Second-Order Elastic Analysis in LRFD:  Research to Practice,” Proceedings of the American Institute of Steel Construction National Steel Construction Conference, Kansas City, Missouri, March 14-17, 1990, AISC, Chicago, Illinois, pp. 11.1-11.22.

Hajjar, J. F. and Abel, J. F. (1989).  “Parallel Processing of Nonlinear Dynamic Analysis of Steel Frame Structures using Domain Decomposition,” Proceedings of the Ninth World Conference on Earthquake Engineering, Vol. V, Tokyo-Kyoto, Japan, August 2-9, 1988, Japan Association for Earthquake Disaster Prevention, Tokyo, Japan, pp. 381-386.

Hilmy, S. I., Hajjar, J. F., and Abel, J. F. (1987).  “Practical Aspects of Implementation of Force-Space Bounding-Surface Plasticity for Dynamics of Steel Frames,” International Conference on Constitutive Laws for Engineering Materials: Theory and Applications, Desai, C. S. (ed.), University of Arizona, Tucson, Arizona, January 5-8, 1987, Elsevier Science Publishers, New York, pp. 1205-1212.

Abel, J. F., Ingraffea, A. R., Perucchio, R., Han, T.-Y., and Hajjar, J. F. (1984).  “Interactive Computer Graphics for Finite Element, Boundary Element, and Finite Difference Methods,” Unification of Finite Element Methods, Kardestuncer, H. (ed.), University of Connecticut, Storrs, Connecticut, May 4, 1984, North-Holland, Amsterdam, pp. 47-62.

National Reports

Peterman, K. D., Kordas, J., Moradei, J., Coleman, K., Der Ananian, J., Webster, M. D., D’Aloisio, J. A., and Hajjar, J. F. (2017). “Thermal Break Strategies for Cladding Systems in Building Structures,” Report to the Charles Pankow Foundation, Charles Pankow Foundation, Vancouver, Washington, May, 356 pp. (report)


Sabelli, R., Roeder, C. W. and Hajjar, J. F. (2013).  “Seismic Design of Steel Special Concentrically Braced Frame Systems,” Report No. NIST GCR 13-917-24, NEHRP Seismic Design Technical Brief No. 8, National Institute of Standards and Technology, Gaithersburg, Maryland, 32 pp. (report)

 

Malley, J. O., Carter, C. J., Hajjar, J. F., Lignos, D., Roeder, C. W., and Saunders, M. (2011).  “Research Plan for the Study of Seismic Behavior and Design of Deep, Slender Wide Flange Structural Steel Beam-Column Members,” Report No. NIST GCR 11-917-13, National Institute of Standards and Technology, Gaithersburg, Maryland, 166 pp. (report)

 

Surovek, A. E., Camotim, D. R. Z., Hajjar, J. F., Teh, L., White, D. W., and Ziemian, R. D. (2011). “Guidelines for the Use of Direct Second-Order Inelastic Analysis in Steel Frame Design,” American Society of Civil Engineers (ASCE) Structural Engineering Institute (SEI) Special Project Committee on Advanced Analysis, ASCE SEI Technical Committee on Compression and Flexural Members, ASCE, Reston, Virginia, 51 pp. (report)

Fenves, G. L., Poland, C. D., Crewe, A. J., Eguchi, R., T., Hajjar, J. F., Lynch, J. P., and Nakashima, M. (2011). Grand Challenges in Earthquake Engineering,” National Research Council, National Academies Press, Washington, D.C, 90 pp. (report)

Hajjar, J. F., Fenves, G. L., Myers, J. D., Bielak, J., Lea, J., Elgamel, A., Bobbitt, J., Samalam, V. J., and Roblee, C. (2007). “Information Technology within the George E. Brown, Jr. Network for Earthquake Engineering Simulation: A Vision for an Integrated Community,” NEES, Inc., Davis, California, 133 pp. (report)

Galambos, T. V., Hajjar, J. F., Earls, C. J., and Gross, J. L. (1997).  “Required Properties of High-Performance Steels,” Report No. NISTIR 6004, National Institute of Standards and Technology, Gaithersburg, Maryland, May, 91 pp.

Hajjar, J. F., O'Sullivan, D. P., Leon, R. T., and Gourley, B. C. (1995).  “Evaluation of the Damage to the Borax Corporate Headquarters Building as a Result of the Northridge Earthquake,” Report No. SAC 95-07, SAC (Structural Engineers Association of California, Applied Technology Council, and California Universities for Research in Earthquake Engineering) Joint Venture, Sacramento, California, December, 76 pp. (report)
 

Technical Reports

Dr. Hajjar has published over seventy technical reports, most co-authored with his graduate students at Northeastern University, the University of Illinois at Urbana-Champaign, and the University of Minnesota based upon their dissertation research, on a range of topics.  Selected technical reports include:

Guldur, B. and Hajjar, J. F. (2014). “Laser-Based Structural Sensing and Surface Damage Detection,” Report No. NEU-CEE-2014-03, Department of Civil and Environmental Engineering, Northeastern University, Boston, Massachusetts, August, 375 pp. (report)

Saykin, V. V., Song, J., and Hajjar, J. F. (2014). “A Validated Approach to Modeling Collapse of Steel Structures,” Report No. NEU-CEE-2014-02, Department of Civil and Environmental Engineering, Northeastern University, Boston, Massachusetts, August, 538 pp. (report)

Denavit, M. D. and Hajjar, J. F. (2014). “Characterization of Behavior of Steel-Concrete Composite Members and Frames with Applications for Design, ,” Report No. NSEL-034, Newmark Structural Laboratory Report Series (ISSN 1940-9826), Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, August, 683 pp. (report)

Denavit, M. D. and Hajjar, J. F. (2013). “Description of Geometric Nonlinearity for Beam-Column Analysis in OpenSees,” Report No. NEU-CEE-2013-02, Department of Civil and Environmental Engineering, Northeastern University, Boston, Massachusetts, September, 12 pp. (report)

LaFave, J. A., Fahnestock, L. A., Foutch, D. A., Steelman, J. S., Revell, J. R., Filipov, E., and Hajjar, J. F. (2013).  “Seismic Performance of Quasi-isolated Highway Bridges in Illinois,” Report No. FHWA-ICT-13-015, Illinois Center for Transportation, University of Illinois at Urbana-Champaign, Urbana, Illinois, June, 229 pp. (report)

LaFave, J. A., Fahnestock, L. A., Foutch, D. A., Steelman, J. S., Revell, J. R., Filipov, E., and Hajjar, J. F. (2013).  “Experimental Investigation of the Seismic Response of Bridge Bearings,” Report No. ICT-13-002, Illinois Center for Transportation, University of Illinois at Urbana-Champaign, Urbana, Illinois, May, 130 pp. (report)

Hajjar, J. F., Sesen, A., Jampole, E., and Wetherbee, A. (2013).  “A Synopsis of Sustainable Structural Systems with Rocking, Self-Centering, and Articulated Energy-Dissipating Fuses,” Report No. NEU-CEE-2013-01, Department of Civil and Environmental Engineering, Northeastern University, Boston, Massachusetts, June, 202 pp. (report)

Hajjar, J. F., Guldur, B., and Sesen, A. (2011).  “Northeastern Laboratory for Structural Testing of Resilient and Sustainable Systems (STReSS Laboratory):  Features and Specifications,” Report No. NEU-CEE-2011-01, Department of Civil and Environmental Engineering, Northeastern University, Boston, Massachusetts, September, 93 pp. (report)

Hall, K. S., Eatherton, M. R., and Hajjar, J. F. (2010).  “Nonlinear Behavior of Controlled Rocking Steel-Framed Building Systems with Replaceable Energy Dissipating Fuses,” Report No. NSEL-026, Newmark Structural Laboratory Report Series (ISSN 1940-9826), Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, October, 45 pp.

Eatherton, M. R. and Hajjar, J. F. (2010).  “Large-Scale Cyclic and Hybrid Simulation Testing and Development of a Controlled-Rocking Steel Building System with Replaceable Fuses,” Report No. NSEL-025, Newmark Structural Laboratory Report Series (ISSN 1940-9826), Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, August. (report)

Denavit, M. D. and Hajjar, J. F. (2010).  “Nonlinear Seismic Analysis of Circular Concrete-Filled Steel Tube Members and Frames,” Report No. NSEL-023, Newmark Structural Laboratory Report Series (ISSN 1940-9826), Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, March. (report)

Borello, D. B., Denavit, M. D., and Hajjar, J. F. (2009). “Behavior of Bolted Steel Slip-critical Connections with Fillers,” Report No. NSEL-017, Newmark Structural Laboratory Report Series (ISSN 1940-9826), Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, August. (report)

Walsh, S. B. and Hajjar, J. F. (2009). “Data Processing of Laser Scans Towards Applications in Structural Engineering,” Report No. NSEL-015, Newmark Structural Laboratory Report Series (ISSN 1940-9826),  Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, June. (report)

Pallarés, L. and Hajjar, J. F. (2009).  “Headed Steel Stud Anchors in Composite Structures:  Part II. Tension and Interaction,” Report No. NSEL-014, Newmark Structural Laboratory Report Series (ISSN 1940-9826),  Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, April. (report)

Pallarés, L. and Hajjar, J. F. (2009).  “Headed Steel Stud Anchors in Composite Structures:  Part I. Shear,” Report No. NSEL-013, Newmark Structural Laboratory Report Series (ISSN 1940-9826),  Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, April. (report)

Borello, D. J., Andrawes, B., Hajjar, J. F., Olson, S. M., Hansen, J. and Buenker, J. (2009).  “Forensic Collapse Investigation of a Concrete Bridge with Timber Piers,” FHWA Report No. FHWA-ICT-09-042, Illinois Center for Transportation, University of Illinois at Urbana-Champaign, Urbana, Illinois. (report)

Steelman, J. S. and Hajjar, J. F. (2008). “Capstone Scenario Applications of Consequence-Based Risk Management for the Memphis Testbed,” Mid-America Earthquake Center, Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, September. (report)

Steelman, J. S. and Hajjar, J. F. (2008). “Systemic Validation of Consequence-Based Risk Management for Seismic Regional Losses,” Mid-America Earthquake Center, Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, September. (report)

Gourley, B. C., Tort, C., Denavit, M. D., Schiller, P. H., and Hajjar, J. F. (2008). “A Synopsis of Studies of the Monotonic and Cyclic Behavior of Concrete-Filled Steel Tube Beam-Columns,” Report No. NSEL-008, Newmark Structural Laboratory Report Series (ISSN 1940-9826), Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, Version 4.0, April. (report)

Tort, C. and Hajjar, J. F. (2007). “ Reliability-Based Performance-Based Design of Rectangular Concrete-Filled Steel Tube (RCFT) Members and Frames,” Structural Engineering Report No. ST-07-1, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, August, 401 pp. (report)

Leon, R. T. and Hajjar, J. F. (2007). “Background to Composite Column Design Changes in the 2005 AISC Specification,” SEMM Report No. 07-12, School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia.

Steelman, J. S., Song, J., and Hajjar, J. F. (2007).  “Integrated Data Flow and Risk Aggregation for Consequence-Based Risk Management of Seismic Regional Losses,” Mid-America Earthquake Center, Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, January, 242 pp. (report)

Krzmarzick, D. and Hajjar, J. F. (2006). “Load Rating of Composite Steel Curved I-Girder Bridges through Load Testing with Heavy Trucks,” Report No. MN/RC-2006-40, Minnesota Department of Transportation, St. Paul, Minnesota, October, 546 pp. (report)

Gartner, S. M. and Hajjar, J. F. (2006). “ Design and Evaluation of Rectangular Concrete Filled Tube (RCFT) Frames for Seismic Demand Assessment,” Structural Engineering Report No. ST-06-01, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, May, 266 pp.

Ocel, J. M., Dexter, R. J., and Hajjar, J. F. (2006). “Fatigue-Resistant Design for Overhead Signs, Mast-Arm Signal Poles, and Lighting Standards,” Report No. MN/RC-2006-07, Minnesota Department of Transportation, St. Paul, Minnesota, March, 190 pp. (report)

La Fore, S. and Hajjar, J. F. (2005). “Design of Concrete-Filled Steel Tube Frames for Assessment under Seismic Loading,” Structural Engineering Report No. ST-05-02, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, May, 217 pp.

Christensen, M. and Hajjar, J. F. (2005). “Computer Analysis of a Horizontally Curved Composite Steel Girder Bridge,” Structural Engineering Report No. ST-05-01, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, July, 42 pp.

Grauvilardell, J., Lee, D., Hajjar, J. F., and Dexter, R. J. (2005). “Synthesis of Design, Testing, and Analysis Research on Steel Column Base Plate Connections in High Seismic Zones,” Structural Engineering Report No. ST-04-02, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, October, 171 pp. (report)

Freisinger, C. M., Krzmarzick, D., Hajjar, J. F., and Dexter, R. J. (2004). “ Testing Strategy for Load Testing of a Horizontally Curved Composite Steel Girder Bridge,” Structural Engineering Report No. ST-04-01, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, June, 174 pp.

Nozaka, K., Shield, C. K., and Hajjar, J. F. (2003). “Repair of Fatigued Steel Bridge Girders with Carbon Fiber Strips,” Report No. MN/RC-2004-02, Minnesota Department of Transportation, St. Paul, Minnesota, December, 163 pp. (report)

Erkman, B., Hajjar, J. F., Daugherty, D. J., and Wan, C. (2003). “Multi-Axial Subassemblage Testing System (MAST): Oregon State University Data and Metadata Model Applied to Quasi-Static Large Scale Testing,” Report No. MAST-03-03, MAST Laboratory, University of Minnesota, Minneapolis, Minnesota, September, 35 pp.

Hajjar, J. F., Daugherty, D. J., Wan, C., Olson, S. A., Shield, C. K., French, C. W., Ernie, D. W., and Du, D. H.-C. (2003). “Multi-Axial Subassemblage Testing System (MAST): MAST Laboratory Experiment-Based Deployment: Initial Plan,” Report No. MAST-03-02, MAST Laboratory, University of Minnesota, Minneapolis, Minnesota, September, 25 pp.

Hajjar, J. F., Daugherty, D. J., Shield, C. K., French, C. W., Schultz, A. E., Olson, S. A., Ernie, D. W., Du, D. H.-C., and Wan, C. (2003). “Multi-Axial Subassemblage Testing System (MAST): Issues Related to Ramp and Hold Protocol,” Report No. MAST-03-01, MAST Laboratory, University of Minnesota, Minneapolis, Minnesota, September, 25 pp.

Tort, C. and Hajjar, J. F. (2003). “ Damage Assessment of Concrete-Filled Steel Tube Members and Frames,” Structural Engineering Report No. ST-03-1, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, April, 318 pp. (report)

Daugherty, D. J., Hajjar, J. F., Ernie, D. W., Du, D. H.-C., Shield, C. K., Beyer, J. C., and Polley, C. (2002). “Multi-Axial Subassemblage Testing System (MAST) Data Collection and Telepresence Systems Specification,” Report No. MAST-02-01, MAST Laboratory, University of Minnesota, Minneapolis, Minnesota, June, 24 pp.

Lee, D., Cotton, S. C., Dexter, R. J., Hajjar, J. F., Ye, Y., and Ojard, S. D. (2002). “Column Stiffener Detailing and Panel Zone Behavior of Steel Moment Frame Connections,” Report No. ST-01-3.2, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, June, 435 pp. (report)

Gourley, B. C., Tort, C., Hajjar, J. F., and Schiller, P. H. (2001). “A Synopsis of Studies of the Monotonic and Cyclic Behavior of Concrete-Filled Steel Tube Beam-Columns,” Structural Engineering Report No. ST-01-4, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, Version 3.0, December, 262 pp. (report)

Hajjar, J. F., Ray, J. D., Wyffels, T. A., and Carlsson, M. L. R. (2001). “Live Load Stresses in Steel Curved Girder Bridges,” Report No. MN/RC-2002-08, Minnesota Department of Transportation, St. Paul, Minnesota, September, 401 pp. (report)

Cotton, S. C., Dexter, R. J., Hajjar, J. F., Ye, Y., and Prochnow, S. D. (2001). “Column Stiffener Detailing and Panel Zone Behavior of Steel Moment Frame Connections,” Structural Engineering Report No. ST-01-3, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, August, 257 pp.

Tong, X., Schultz, A. E., Hajjar, J. F., and Shield, C. K. (2001). “Seismic Behavior of Composite Steel Frame-Reinforced Concrete Infill Wall Structural System,” Structural Engineering Report No. ST-01-2, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, April, 333 pp. (report)

Prochnow, S. D., Dexter, R. J., Hajjar, J. F., Ye, Y., and Cotton, S. C. (2001).  “Local Flange Bending and Local Web Yielding Limit States in Steel Moment-Resisting Connections,” Report No. ST-00-4, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, November, 247 pp. (report)

Ye, Y., Hajjar, J. F., Dexter, R. J., Prochnow, S. D., and Cotton, S. C. (2000).  “Nonlinear Analysis of Continuity Plate and Doubler Plate Details in Steel Moment Frame Connections,” Report No. ST-00-3, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, August, 156 pp. (report)

Carlsson, M. L. R. and Hajjar, J. F. (2000).  “Stresses in Steel Curved Girder Bridges,” A Synopsis of Experimental Results and Design Recommendations,” Structural Engineering Report No. ST-99-4, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, August, 142 pp.

Carlsson, M. L. R. and Hajjar, J. F. (2000).  “Fatigue of Stud Shear Connectors in the Negative Moment Region of Steel Girder Bridges:  CTS 00-03, Center for Transportation Studies, University of Minnesota, Minneapolis, Minnesota, June, 108 pp.

Dexter, R. J., Hajjar, J. F., Cotton, S. C., Prochnow, S. D., and Ye, Y. (1999). “Reassessment of Design Criteria and New Alternatives for Column Transverse Stiffeners (Continuity Plates) and Web Doubler Plates: Interim Report,” Structural Engineering Report No. ST-99-3, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, August, 187 pp.

Tong, X., Schultz, A. E., and Hajjar, J. F. (1999). “Prototype Design and Plastic Analysis of Steel Frames with Composite Reinforced Concrete Infill Walls,” Structural Engineering Report No. ST-99-2, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, February, 55 pp.

Saari, W. K., Schultz, A. E., Hajjar, J. F., and Shield, C. K. (1999). “Behavior of Shear Connectors in Steel Frames with Reinforced Concrete Infill Walls,” Structural Engineering Report No. ST-99-1, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, February, 206 pp. (report)

French, C. W., Eppers, L. J., Le, Q. and Hajjar, J. F. (1999). “Transverse Cracks in Bridge Decks,” Report No. MN/RC-1999-05, Minnesota Department of Transportation, St. Paul, Minnesota, January, 37 pp. (report)

Dexter, R. J., O'Connell, H. M., Hajjar, J. F., and Bergson, P. M. (1998). “Fatigue Evaluation of Stillwater Bridge (Bridge 4654),” Report No. MN/RC-P99/1, Minnesota Department of Transportation, St. Paul, Minnesota, Decenber, 38 pp.

Nozaka, K., Hajjar, J. F., Schultz, A. E., and Shield, C. K. (1998). “Design of an Experimental Test Facility for Steel Frames with RC Infill Walls,” Structural Engineering Report No. ST-98-5, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, September, 53 pp.

Le, Q., French, C. W. and Hajjar, J. F. (1998). “Transverse Cracking in Bridge Decks: Parametric Study,” Minnesota Department of Transportation, Final Report, July.

Eppers, L. J., French, C. W., and Hajjar, J. F. (1998). “Transverse Cracking in Bridge Decks: Field Study,” Minnesota Department of Transportation, Final Report, July.

Carlson, P. C., Shield, C. K., and Hajjar, J. F. (1998). “The Behavior of Earthquake Resistant, Composite Steel Moment Resisting Frame Connections,” Structural Engineering Report No. ST-98-4, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, March, 205 pp.

Hajjar, J. F., Leon, R. T., Gustafson, M. A., and Shield, C. K. (1998). “Full-Scale Cyclic Experiments of Composite Moment-Resisting Frame Connections,” Structural Engineering Report No. ST 98-02, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, and Report No. SEM 98-02, School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia, March, 426 pp. (report)

Tong, X., Hajjar, J. F., and Schultz, A. E. (1998), “Prototype Design of Steel Frames with Reinforced Concrete Infill Walls,” Structural Engineering Report No. ST-98-1, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, January, 39 pp.

Molodan, A. and Hajjar, J. F. (1997).  “A Cyclic Distributed Plasticity Model for Three-Dimensional Concrete-Filled Steel Tube Beam-Columns and Composite Frames,” Structural Engineering Report No. ST-96-6, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, August, 123 pp. (report)

Fetterer, K. A. and Hajjar, J. F. (1997).  “Prototype Design of Composite Unbraced Frames using Concrete-Filled Steel Tube Beam-Columns,” Structural Engineering Report No. ST-96-7, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, July, 80 pp.

Hajjar, J. F., Schiller, P. H., and Molodan, A. (1997), “A Distributed Plasticity Model for Concrete-Filled Steel Beam-Columns with Interlayer Slip.  Part I.  Slip No. ST-97-1, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, February, 95 ppFormulation and Monotonic Analysis. Part II.  Constitutive Formulation and Cyclic Analysis,” Structural Engineering Report.

Schiller, P. H. and Hajjar, J. F. (1996).  “A Distributed Plasticity Formulation for Three-Dimensional Rectangular Concrete-Filled Steel Tube Beam-Columns and Composite Frames,” Structural Engineering Report No. ST-96-5, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, November, 226 pp. (report)

Galambos, T. V., Hajjar, J. F., Leon, R. T., Huang, W.-H., Pulver, B. E., and Rudie, B. J. (1996). “Stresses in Steel Curved Girder Bridges,” Report No. MN/RC-96/28, Minnesota Department of Transportation, St. Paul, Minnesota, 345 pp. (report)

Olson, M. C. and Hajjar, J. F. (1996). “Cyclic Stress-Resultant Plasticity Behavior of Steel Cross-Sections,” Structural Engineering Report No. ST-96-4, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, July, 288 pp.

Zofkie, R. D. and Hajjar, J. F. (1996). “Non-Iterative Calculation of Steel Beam-Column Inelastic Axial Design Strength,” Structural Engineering Report No. ST-96-1, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, July, 191 pp.

Hajjar, J. F. and Gourley, B. C. (1995). “A Cyclic Nonlinear Model for Concrete-Filled Tubes. I. Formulation,” and Hajjar, J. F., Gourley, B. C., and Olson, M. C. (1995). “A Cyclic Nonlinear Model for Concrete-Filled Tubes. II. Verification,” Structural Engineering Report No. ST-95-3, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, August, 98 pp.

Hajjar, J. F. and Gourley, B. C. (1995). “Representation of Concrete-Filled Steel Tube Cross-Section Strength,” Structural Engineering Report No. ST-95-2, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, August, 47 pp.

Jang, S. and Hajjar, J. F. (1995). “Design of an Experimental Test Facility to Study Concrete-Filled Steel Tube Beam-Columns Subjected to Nonproportional, Nonuniform Bending Moment Plus Axial Force,” Structural Engineering Report No. ST-95-1, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, July, 69 pp.

Gourley, B. C., Hajjar, J. F., and Schiller, P. H. (1995). “A Synopsis of Studies of the Monotonic and Cyclic Behavior of Concrete-Filled Steel Tube Beam-Columns,” Structural Engineering Report No. ST-93-5.2, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, Version 2.0, June, 133 pp.

Gourley, B. C. and Hajjar, J. F. (1994). “Cyclic Nonlinear Analysis of Three-Dimensional Concrete-Filled Steel Tube Beam-Columns and Composite Frames,” Structural Engineering Report No. ST-94-3, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, November, 216 pp. (report)

Schiller, P. H., Hajjar, J. F., and Gourley, B. C. (1994). “Expressions for the Elastic Rigidity of Rectangular Concrete-Filled Steel Tube Beam-Columns,” Structural Engineering Report No. ST-94-2, Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, September, 15 pp.

Gourley, B. C. and Hajjar, J. F. (1994). “Representation of Cross-Section Strength for Low and High Strength Rectangular Concrete-Filled Steel Tubes,” Structural Engineering Report No. ST-94-1, Department of Civil and Mineral Engineering, University of Minnesota, Minneapolis, Minnesota, February, 93 pp.

Gourley, B. C. and Hajjar, J. F. (1993). “A Synopsis of Studies of the Monotonic and Cyclic Behavior of Concrete-Filled Steel Tube Beam-Columns,” Structural Engineering Report No. ST-93-5.1, Department of Civil and Mineral Engineering, University of Minnesota, Minneapolis, Minnesota, Version 1.0, October, 101 pp.

Hajjar, J. F. and White, D. W. (1993). “The Accuracy of Column Stability Calculations in Unbraced Frames and the Influence of Columns with Effective Length Factors Less Than One,” Structural Engineering Report No. ST-93-4, Department of Civil and Mineral Engineering, University of Minnesota, Minneapolis, Minnesota, October, 58 pp.

Squarzini, M. J. and Hajjar, J. F. (1993). “An Evaluation Of Proposed Techniques For Predicting Column Capacity,” Structural Engineering Report No. ST-93-3, Department of Civil and Mineral Engineering, University of Minnesota, Minneapolis, Minnesota, September, 195 pp.

Hajjar, J. F. and White, D. W. (1993). “Influence of Columns with K Less Than One on the Accuracy of Effective Length Calculations in Unbraced Frames,” Technical Report No. CE-STR-93-3, School of Civil Engineering, Purdue University, West Lafayette, Indiana, January 193, 40 pp.

Hajjar, J. F. and White, D. W. (1992). “On the Use of Effective Length Factors Less Than One in Unbraced Frames,” Technical Report No. CE-STR-92-23, School of Civil Engineering, Purdue University, West Lafayette, Indiana, June, 29 pp.

White, D. W. and Hajjar, J. F. (1990). “Application of Second Order Elastic Analysis in LRFD: Research to Practice,” Technical Report No. CE-STR-90-28, School of Civil Engineering, Purdue University, West Lafayette, Indiana, October, 60 pp.

Invited Lectures

Dr. Hajjar has given over ninety invited lectures on his research at university departmental seminars, national and international committee meetings, and at engineering companies. Selected invited lectures include:

“Urban Engineering:  New Strategies for a Resilient and Sustainable Solution,” 54th Annual Robert D. Klein Lectureship Award Presentation, Northeastern University, Boston, Massachusetts, March 19,2018.


“Damage and Collapse Assessment of Steel and Composite Structures,” Department of Civil and Environmental Engineering, University of Houston, Houston, Texas, March 31, 2017.

 
“Urban Engineering Strategies in Civil and Environmental Engineering,” Department of Civil & Environmental Engineering and Earth Sciences, Notre Dame University, Notre Dame, Indiana, October 27, 2016.


“Damage and Collapse Assessment of Steel and Composite Structures,” Department of Civil and Environmental Engineering, University of Buffalo, Buffalo, New York, October 14, 2016.


“Resilient and Sustainable Design of Structural Systems: Ideas for a Changing World,” Autodesk, Boston, Massachusetts, September 1, 2016.


“New Strategies for Resilient and Sustainable Structural Systems,” National Institute of Standards and Technologies, Gaithersburg, Maryland, May 9, 2016.

 

“Urban Engineering Strategies in Civil and Environmental Engineering,” Department of Civil and Environmental Engineering, Colorado State University, Fort Collins, Colorado, April 25, 2016.

 

“Collapse Assessment of Steel and Composite Structures,” Simpson, Gumpertz & Heger, Inc., July 30, 2015.

“Damage and Collapse Assessment of Steel and Composite Structures,” Department of Civil and Environmental Engineering, University of Washington, Seattle, Washington, April 28, 2015.

“Damage and Collapse Assessment of Steel and Composite Structures,” North American Steel Construction Conference, Nashville, Tennessee, March 26, 2015.

“ARIA: Aerial Robotic Infrastructure Analyst Laser-based Structural Sensing and Surface Damage Assessment,” Simpson, Gumpertz & Heger, Inc., December 18, 2014.

“New Strategies for Resilient and Sustainable Urban Infrastructure,” CDM Smith Professor of Civil Engineering Inaugural Lecture, Northeastern University, Boston, Massachusetts, November 14, 2014.

“New Developments in Structural Steel in the Northeast,” 33rd Annual Steel Conference, Steel Fabricators of New England, Worcester, Massachusetts, June 5, 2014.

“Post-Northridge Advances in Composite and Hybrid Structural Systems,” 2014 North American Steel Construction Conference, Toronto, Canada, March 25-27, 2014.

“Post-Northridge Advances in Composite and Hybrid Structural Systems,” Northridge 20 Symposium:  The 1994 Northridge Earthquake:  Impact, Outcomes, and Next Steps, Los Angeles, California, January 16-17, 2014.

“Resilient and Sustainable Design of Structural Systems:  Ideas for a Changing World,” Boston Association of Structural Engineers, Boston, Massachusetts, March 20, 2013.

“Sustainable Engineering of Steel Structures:  Self-Centering Rocking Systems with Replaceable Energy-Dissipating Fuses,” Department of Civil and Environmental Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts, November 2, 2012.

“New Developments in Resilient and Sustainable Systems,” Reinforced Concrete Construction Committee, Boston, Massachusetts, June 7, 2012.

“New Developments in Resilient and Sustainable Systems,” Structural Engineers Association of Massachusetts, Boston, Massachusetts, May 30, 2012.

“Summary of Stability Studies for Composite Systems,” American Institute of Steel Construction Specification Task Committee on Composite Construction and Task Committee 10 on Stability, Chicago, Illinois, November 17, 2011.

“Sustainable Engineering of Steel Structures:  Self-Centering Rocking Systems with Replaceable Energy-Dissipating Fuses,” Department of Advanced Structures, University of Cincinnati, Cincinnati, Ohio, November 4, 2011.

“Sustainable Engineering of Steel Structures:  Self-Centering Rocking Systems with Articulated Energy-Dissipating Fuses,” EDIFICA: Más Allá del Límite, Instituto Tecnológico y de Estudios Superiores de Monterrey, Monterrey, Mexico, November 4, 2010.

“Sustainable Engineering of Seismic Systems:  Self-Centering Rocking Structures with Articulated Energy-Dissipating Fuses,” Warren Lecture in Honor of Robert J. Dexter, Department of Civil Engineering, University of Minnesota, Minneapolis, Minensota, October 1, 2010.

“Seismic Resiliance of Self-Centering Steel Frames with Replaceable Energy-Dissipating Fuses,” American Institute of Steel Construction Task Committee 9 on Seismic Design, Las Vegas, Nevada, July 7, 2010.

“Seismic Resiliance of Self-Centering Steel Frames with Replaceable Energy-Dissipating Fuses,” American Institute of Steel Construction Committee on Research, Orlando, Florida, May 11, 2010.

“Seismic Design of Steel Frames Using Fuses,” Metal Building Manufacturers Association Researchers’ Symposium, Dallas, Texas, February 10, 2010.

“Controlled Rocking of Steel Structures with Replaceable Energy-Dissipating Fuses,” Structural Engineering Research Center, Tokyo Institute of Technology, Yokohama, Japan, July 29, 2009.

“Behavioral Assessment of Concrete-Filled Steel Tube Structures for Seismic Excitation,” Department of Architecture and Building Engineering, Tokyo Institute of Technology, Tokyo, Japan, July 22, 2009.

“Behavioral Assessment of Concrete-Filled Steel Tube Structures:  Computational and Experimental Response for Performance-Based Design,” Laboratoire de Genie Civil et Genie Mecanique, Génie Civil et Urbanisme, INSA de Rennes, Rennes, France, June 2, 2009.

“Controlled Rocking of Steel Structures with Replaceable Energy-Dissipating Fuses,” Laboratoire de Genie Civil et Genie Mecanique, Génie Civil et Urbanisme, INSA de Rennes, Rennes, France, May 26, 2009.

“An Overview of Seismic Design of Steel Structures,” Laboratoire de Genie Civil et Genie Mecanique, Génie Civil et Urbanisme, INSA de Rennes, Rennes, France, May 18, 2009.

“Mitigation Strategies for Regional Loss Assessment,” Sixth International Conference on Urban Earthquake Engineering, Tokyo, Japan, March 4, 2009.

“Dekalb County Bridge SN019-5010 Collapse Investigation,” 95th Annual Illinois Transportation and Highway Engineering Conference, University of Illinois at Urbana-Champaign, Urbana, Illinois, February 25, 2009.

“Mitigating Disaster in the U.S. Infrastructure:  What is the Government’s Role in Keeping the Public Safe?,” Institute of Government and Public Affairs, University of Illinois at Urbana-Champaign, Urbana, Illinois, November 5, 2008.

“New Developments in Earthquake Engineering of Steel and Composite Structures,” School of Civil Engineering, Tsinghua University, Beijing, China, October 17, 2008.

“Regional Risk Assessment and Reduction: A Case Study in Shelby County, Tennessee,” Damage Reduction Through Preparedness, Washington University, St. Louis, Missouri, August 19, 2008.

“Seismic Response of Steel Controlled Rocking Frames with Replaceable Energy-Dissipating Fuses,” Sixth International Workshop on Connections in Steel Structures, Chicago, Illinois, June 24, 2008.

“Controlled Rocking of Steel Framed Buildings with Replaceable Energy Dissipating Fuses,” 6th Annual Meeting of the George E. Brown, Jr. Network for Earthquake Engineering Simulation, Portland, Oregon, June 19, 2008.

“New Developments in Earthquake Engineering of Steel and Composite Structures,” North American Steel Construction Conference, Nashville, Tennessee, April 3, 2008.

“Research and Practice on Steel Bridges: Load Rating of Bridges and the I-35W Bridge Collapse of August 1, 2007,” United States Geological Survey, Champaign, Illinois, October 26, 2007.

“Behavioral Assessment of Concrete-Filled Steel Tube Members and Frames: Formulations for Performance-Based Design,” Department of Civil and Environmental Engineering, Rensselaer Polytechnic Institute, Troy, New York, October 24, 2007.

“Information Technology within the George E. Brown, Jr. Network for Earthquake Engineering Simulation: A Vision for an Integrated Community,” 5th Annual Meeting of the George E. Brown, Jr. Network for Earthquake Engineering Simulation, Snowbird, Utah, June 20, 2007.

“Behavioral Assessment of Concrete-Filled Steel Tube Members and Frames:  Formulations for Performance-Based Design,” Department of Civil Engineering, Purdue University, September 5, 2006.

“Load Rating of Curved Composite Steel I-girder Bridges through Load Testing with Heavy Trucks,” Department of Civil Engineering, University of Tokyo, Tokyo, Japan, August 17, 2006.

“Column Reinforcement Design for Seismic and Non-Seismic Moment-Resisting Connections in Steel Frame Structures,” American Institute of Steel Construction T. R. Higgins Lecture Series: Worcester, Massachusetts, May 26, 2005; Denver, Colorado, June 16, 2005; San Francisco, California, September 6, 2005; Dallas, Texas, October 22, 2005; Portland, Oregon, November 2, 2005; Seattle, Washington, November 3, 2005, Lawrence, Kansas, March 1, 2006.

“MAE Center Reconnaissance:  Pakistan Earthquake,” The Pakistan Earthquake, A Wake-Up Call for Mid-America?, part of the series of forums on Megacatastrophes:  Science, Policy, and Human Behavior, Center for Advanced Studies, University of Illinois at Urbana-Champaign, Urbana, Illinois, February 15, 2006.

“Column Reinforcement Design for Seismic and Non-Seismic Moment-Resisting Connections in Steel Frame Structures,” American Institute of Steel Construction T. R. Higgins Lecture Series:  Keynote Plenary Presentation:  North American Steel Construction Conference, Montreal, Canada, April 8, 2005.

“Seismic Detailing of Moment-Resisting Connections in Steel Frame Structures After the 1994 Northridge Earthquake,” Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, February 21, 2005.

“Seismic Detailing of Moment-Resisting Connections in Steel Frame Structures,” Department of Civil Engineering, Johns Hopkins University, Baltimore, Maryland, November 8, 2004.

“Cyclic Behavior of Steel Frames with Composite Reinforced Concrete Infill Walls,” Department of Civil and Environmental Engineering, Stanford University, Stanford, California, July 10, 2002.

“Structural Collapse of the World Trade Center: Impact on Building Design and Disaster Management in Minnesota,” Building Design After September 11, 2001: Architecture, Structure, Safety – A Forum for the Minnesota Community, University of Minnesota, Minneapolis, Minnesota, January 30, 2002.

“Nonlinear Finite Element Analysis of Concrete-Filled Steel Tube Beam-Columns and Composite Frame Structures,” Department of Civil and Environmental Engineering, University of California at Berkeley, Berkeley, California, April 23, 2001.

“Cyclic Analysis of Concrete-Filled Steel Tube Beam-Columns and Composite Frames: Distributed Plasticity Formulation,” Department of Civil and Environmental Engineering, Stanford University, Stanford, California, October 16, 2000.

“Cyclic Analysis of Concrete-Filled Steel Tube Beam-Columns and Composite Frames: Concentrated Plasticity Formulation,” Department of Civil and Environmental Engineering, Stanford University, Stanford, California, August 28, 2000.

“Nonlinear Finite Element Analysis of Concrete-Filled Steel Tubes and Composite Frames,” Department of Civil and Environmental Engineering, University of Illinois, Urbana-Champaign, Illinois, April 26, 1999.

“The 1994 Northridge, California Earthquake: Causes of Damage to Steel Moment-Resisting Frame Connections,” Department of Architecture, Massachusetts Institute of Technology, Cambridge, Massachusetts, November 23, 1998.

“Effect of Composite Floor Slabs on the Behavior of Steel Moment-Resisting Frame Connections in the Northridge Earthquake,” International Association for Bridge and Structural Engineering Working Commission 2 on Steel Structures, Composite Construction – Conventional and Innovative, International Association for Bridge and Structural Engineering, Innsbruck, Austria, September 16, 1997.

 

Invited Workshop Presentations

Dr. Hajjar has made presentations on his research at over thirty workshops around the world. Selected invited workshop presentations include:

“Infrastructure Resilience Trends,” International Symposium on Developing Standards for Disaster Resilience of Buildings, Infrastructure, and Communities, National Institute of Standards and Technology, Gaithersburg, Maryland, September 3, 2014.

“Sustainability of Steel Structures:  Breakout Summary,” Innovations in Steel Design, Chicago, Illinois, March 28, 2012.

“Self-Centering Seismic-Resistant Systems:  Next Steps Towards Codification,” Seminar on the Steps Towards Implementation and Codification of Self-Centering Seismic Resistant Systems, Toronto, Canada, July 29-30, 2010.

“Mitigating Catastrophes from Low-Probability, High-Consequence Seismic Events,” NEES/E-Defense Collaborative Research Program on Earthquake Engineering:  Phase 2 Planning Meeting, National Science Foundation, Arlington, Virginia, January 12-13, 2009.

“Seismic Response of Steel Controlled Rocking Frames with Replaceable Energy-Dissipating Fuses,” Proceedings of the International Workshop on Connections in Steel Structures VI, Chicago, Illinois, June 23-25, 2008.

“Controlled Rocking of Steel-Framed Buildings with Replaceable Energy-Dissipating Fuses,” Planning Meeting for U.S./E-Defense Collaboration, Miki, Japan, September 27-29, 2007.

“A Vision for Information Technology in Earthquake Engineering,” World Forum on Collaborative Research in Earthquake Engineering, Ispra, Italy, March 26-27, 2007.

“World Forum on Collaborative Research in Earthquake Engineering: Cyberinfrastructure,” World Forum on Collaborative Research in Earthquake Engineering, San Francisco, California, March 16-18, 2006.

Discussion Forum, “Infrastructure after 9/11,” James L. Oberstar Forum, Center for Transportation Studies, University of Minnesota, Minneapolis, Minnesota, April 28-29, 2002.

“Reassessment of Continuity Plate and Doubler Plate Design: Current Research,” SAC Joint Venture 90% Draft Meeting on Connection Design, San Francisco, California, November 15-16, 1999.

“Composite Interaction of Steel Frame Members and Reinforced Concrete Walls under Seismic Loading: Computational and Experimental Research Program,” Fifth U.S.-Japan Joint Technical Coordination Conference, U.S.-Japan Cooperative Earthquake Engineering Program, Phase 5, Composite and Hybrid Structures, Tokyo, Japan, October 4-6, 1998.

“Cyclic Testing of Steel Moment-Resisting Frames with Composite Reinforced Concrete Infill Walls,” Third U.S.-Japan Joint Technical Coordination Conference, U.S.-Japan Cooperative Earthquake Engineering Program, Phase 5, Composite and Hybrid Structures, Hong Kong, December 12-14, 1996.

“Cyclic Analysis of Concrete-Filled Steel Tube Beam-Columns and Composite Frame Structures,” Third U.S.-Japan Joint Seminar on Innovations in Stability Concepts and Methods for Seismic Design in Structural Steel, Honolulu, Hawaii, July 15-18, 1996.

 

Conference Presentations

In addition to those presentations made for papers listed under “Refereed Papers in Special Publications,” “Refereed Papers in Conference Proceedings,” or “Papers in Conference Proceedings,” Dr. Hajjar has made over thirty conference presentations on his research. Selected conference presentations include:


Padilla-Llano, D. and Hajjar, J. F. (2018).  “A Framework for Cyclic Fracture Simulation in Steel Structures,” Invited Presentation in Session on Advances in Computational Mechanics for the Multiphysics and Multiscale Simulation of Infrastructure Materials,13th World Congress in Computational Mechanics, New York, New York, July 22-27, 2018.

Hajjar, J. F. (2018). “Composite Construction in the U.S.:  Current Design and Future Opportunities,” Invited Keynote Presentation, Advances in Steel-Concrete Composite Structures, Valencia, Spain, June 27-29, 2018.

Padilla-Llano and Hajjar, J. F. (2018). “Cyclic Fracture Modeling for Structural Damage Simulation in Steel Structures,” Invited Presentation in Mini-Symposium on Robustness of Infrastructures, 2018 Engineering Mechanics Institute Conference, American Society of Civil Engineers, Boston, Massachusetts, May 29-June 1, 2018.

Yan, Y. and Hajjar, J. F. (2018). “Automated Condition Assessment and Monitoring of Infrastructures with Visual Sensing Technologies,” Mini-Symposium on Structural Modeling and Identification for Performance and Resilience Assessment of Civil Structures, 2018 Engineering Mechanics Institute Conference, American Society of Civil Engineers, Boston, Massachusetts, May 29-June 1, 2018.

Güldür Erkal, B. and Hajjar, J. F. (2018).  “Development of a Laser and Image-based Surface Damage Detection Software Application,” Proceedings of the 2018 SEI Structures Congress, Fort Worth, Texas, April 19-21, 2018, American Society of Civil Engineers, Reston, Virginia.

Yan, Y. and Hajjar, J. F. (2018).  “Automated Creation of As-is Finite Element Models of Aging Infrastructures using UAV and Visual Sensing Technology of a Laser and Image-based Surface Damage Detection Software Application,” Proceedings of the 2018 SEI Structures Congress, Fort Worth, Texas, April 19-21, 2018, American Society of Civil Engineers, Reston, Virginia.

Wang, L., Webster, M. D., and Hajjar, J. F. (2018). “Design for Deconstruction: Sustainable Composite Floor Systems with Deconstructable Clamping Connectors,” North American Steel Construction Conference 2018, Baltimore, Maryland, April 11-13, 2018.

Hajjar, J. F. (2017). “The Future of the AISC Composite Construction Specification,” Invited Keynote Presentation, Composite Construction in Steel and Concrete VIII, Jackson, Wyoming, July 30-August 2, 2017.

Padilla-Llano and Hajjar, J. F. (2017). “Automated Processing of Laser Point Clouds towards Structural Modelling of Bridges,” Mini-Symposium on Robustness of Infrastructures, 2017 Engineering Mechanics Institute Conference, American Society of Civil Engineers, San Diego, California, June 4-7, 2017.

Yan, Y. and Hajjar, J. F. (2017). “Automated Processing of Laser Point Clouds towards Structural Modelling of Bridges,” Mini-Symposium on Structural Modeling and Identification for Performance and Resilience Assessment of Civil Structures, 2017 Engineering Mechanics Institute Conference, American Society of Civil Engineers, San Diego, California, June 4-7, 2017.

Qiao, C., Myers, A. T., Arwade, S. R., Hajjar, J. F., Hines, E. M., and Kuchma, D. A. (2017). “The Spatio-Temporal Correlation of Multiple Offshore Hazards during Historical Hurricanes along the U.S. Atlantic Coast,” 2017 SEI Structures Congress, Denver, Colorado, April 5-7, 2017.

Peterman, K., Webster, M. D., D’Aloisio, J. A., Hajjar, J. F. (2017). “Thermal Break Strategies for Cladding Systems in Building Structures,” 2017 ACMA North American Pultrusion Conference, Atlanta, Georgia, April 4-5, 2017.

Hajjar, J. F.
, Wang, L. and Webster, M. D. (2016). “Performance of Deconstructable Shear Connectors in Sustainable Composite Floor Systems,” 2016 GI-SEI Congress, Phoenix, Arizona, February 14-17, 2016.

Brown, C., Wang, L., Webster, M. D., Eckelman, M., and Hajjar, J. F. (2015). “Life Cycle Analysis of Deconstructable Floor Systems,” 2015 SEI Structures Congress, Portland, Oregon, April 23-25, 2015.

Hajjar, J. F. (2015).  “Advancing Structural Engineering through Better Integration of Practice, Education, and Research,” Panel Discussion, 2015 SEI Structures Congress, Portland, Oregon, April 23-25, 2015.

Peterman, K., Webster, M. D., D’Aloisio, J. A., and Hajjar, J. F. (2015). “Thermal Bridging in Cladding Systems,” Building Energy 2015, Boston, Massachusetts, March 11-13, 2015.

Wang, L., Brown, C., Webster, M. D., and Hajjar, J. F. (2014).  “Deconstructable Steel-Concrete Shear Connection for Sustainable Composite Floor Beams Systems,” 2014 Engineering Mechanics Institute Conference, American Society of Civil Engineers, Hamilton, Ontario, Canada, August 5-8, 2014.

Güldür, B. and Hajjar, J. F. (2014).  “Texture Mapped Laser Point Clouds for Damage Detection and Documentation on Structures,” 2014 Engineering Mechanics Institute Conference, American Society of Civil Engineers, Hamilton, Ontario, Canada, August 5-8, 2014.

Hajjar, J. F. (2014).  “Life in Academia, Life in the Profession,” Panel Discussion, 2014 SEI Structures Congress, Boston, Massachusetts, April 3-5, 2014.

Deniz, D., Song, J., Hajjar, J. F., and Nguyen, T. H. (2013).  “Probabilistic Assessment of Dynamic Instability of Frame Structures Under Seismic Excitations,” 2013 Engineering Mechanics Institute Conference, American Society of Civil Engineers, Evanston, Illinois, August 4-7, 2013.

Hajjar, J. F., Denavit, M. D., Perea, T., and Leon, R. T., (2013).  “New Strategies for Design of Steel-concrete Composite Members and Frames,” Composite Construction in Steel and Concrete VII, Palm Cove, Australia, July 28-August 1, 2013.

Güldür, B. and Hajjar, J. F. (2013).  “Automated Diagnostics for Coastal Systems:  Damage Assessment,” Sustaining Coastal Cities Conference, Boston, Massachusetts, May 22-23, 2013.

Hajjar, J. F., Eatherton, M. R., Ma, X., and Deierlein, G. G., (2012).  “Resilient Engineering of Steel Structures:  Controlled Rocking Systems with Replaceable Energy-Dissipating Fuses,” Fifth Kwang-Hua Forum:   Innovations and Implementations in Earthquake Engineering Research, Shanghai, China, December 8-10, 2012.

Deniz, D., Song, J., Hajjar, J. F., and Nguyen, T. H. (2012).  “Identification of Dynamic Instability Limit States for Structures Under Stochastic Excitations,” 2012 Engineering Mechanics Institute Conference, American Society of Civil Engineers, Notre Dame University, South Bend, Indiana, June 17-20, 2012.

Nguyen, T. H., Hajjar, J. F., Song, J., Deniz, D. (2012).  “CZM-based Macro-model for Structural Progressive Collapse Analysis of Frame Structures,” 2012 Engineering Mechanics Institute Conference, American Society of Civil Engineers, Notre Dame University, South Bend, Indiana, June 17-20, 2012.

Szyniszewski, S., Smith, B. H., Arwade, S. R., Schafer, B. W., Hajjar, J. F. (2012). “Reliability of Steel Foam Components,” 2012 Engineering Mechanics Institute Conference, American Society of Civil Engineers, Notre Dame University, South Bend, Indiana, June 17-20, 2012.

LaFave, J. M., Steelman, J. S., Fahnestock, L. A., Filipov, E. T., Hajjar, J. F., and Foutch, D.A. (2012).  “Seismic Bridge Bearing Tests and Systems Analyses for Refining IDOT Bridge Design Procedures,” Proceedings of the ASCE/SEI Structures Congress 2012, Chicago, Illinois, March 29-31, 2012, ASCE, Reston, Virginia.

Borello, D. J., Denavit, M. D., and Hajjar, J. F. (2012).  “Design of Bolted Steel Slip-Critical Connections with Fillers,” Proceedings of the ASCE/SEI Structures Congress 2012, Chicago, Illinois, March 29-31, 2012, ASCE, Reston, Virginia.

Smith, B. H., Arwade, S. R., Szynizewski, S., Schafer B. W., and Hajjar, J. F. (2011). “Computational Modeling of Cellular Metals with Random Microstructures,” 2011 Engineering Mechanics Institute Conference, American Society of Civil Engineers, Northeastern University, Boston, Massachusetts, June 2-4, 2011.

Szynizewski, S., Schafer B. W., Hajjar, J. F., Smith, B. H., and Arwade, S. R. (2011). “Metal Foam Computational Models for New Class of Structural Applications,” 2011 Engineering Mechanics Institute Conference, American Society of Civil Engineers, Northeastern University, Boston, Massachusetts, June 2-4, 2011.

Arwade, S. R., Smith, B. H., Szynizewski, S., Schafer B. W., and Hajjar, J. F. (2011). “Review of Steel Foams:  Processing, Properties, and Applications,” 2011 Engineering Mechanics Institute Conference, American Society of Civil Engineers, Northeastern University, Boston, Massachusetts, June 2-4, 2011.

Denavit, M. D., Hajjar, J. F., Perea, T., and Leon, R. T. (2011).  “Cyclic Evolution of Beam-Column Interaction Strength of Concrete-Filled Steel Tube Beam-Columns,” 2011 Engineering Mechanics Institute Conference, American Society of Civil Engineers, Northeastern University, Boston, Massachusetts, June 2-4, 2011.

Hajjar, J. F. (2011). “Sustainable Structural Systems:  Designing Our Future,” North American Steel Construction Conference 2011, Pittsburgh, Pennsylvania, May 11-14, 2011.

Hajjar, J. F. (2011). “Overview of Composite Construction in the 2010 AISC Seismic Provisions,” North American Steel Construction Conference 2011, Pittsburgh, Pennsylvania, May 11-14, 2011.

Hajjar, J. F. (2011). “Sustainable Engineering of Steel Structures:  Self-Centering Rocking Systems with Articulated Energy-Dissipating Fuses,” EDIFICA: Más Allá del Límite, Instituto Tecnológico y de Estudios Superiores de Monterrey, Monterrey, Mexico, November 4, 2010.

Hajjar, J. F. (2010). “Behavior and Design of Composite Column Systems:  Recent Research and New Provisions,” North American Steel Construction Conference, Orlando, Florida, May 12-15, 2010.

Hajjar, J. F. (2010).  “An Overview of Composite Construction in the 2010 AISC Seismic Provisions,” ASCE/SEI Structures Congress 2010, Orlando, Florida, May 12-14, 2010.

Hajjar, J. F., Varma, A. H., Bursi, O., and Hitaka, T. (2009).  “Seismic Engineering of Composite Structures:  A World Overview,” ASCE/SEI Structures Congress 2009, Austin, Texas, April 30-May 2, 2009, ASCE, Reston, Virginia.

Hajjar, J. F. and Eatherton, M. (2009).  “Structural Fuses:  A New Approach to Damage Tolerant Design,” 10th Annual Structures Conference, University of Illinois at Urbana-Champaign, Urbana, Illinois, April 16, 2009.

Pallarés Rubio, L. and Hajjar, J. F. (2008).  “Design of Shear Connectors Between Steel and Concrete In Composite Construction,” Composite Construction in Steel and Concrete VI, Engineering Conferences International, Tabernash, Colorado, July 20-24, 2008.

Perea, T., Leon, R. T., and Hajjar, J. F. (2008).  “Behavior of Composite CFT Beam-Columns Based on Nonlinear Fiber Element Analysis,”Composite Construction in Steel and Concrete VI, United Engineering Foundation, Tabernash, Colorado, July 20-24, 2008.

Hajjar, J. F., Eatherton, M., Deierlein, G. G., Krawinkler, H., Billington, S., and Ma, X. “Seismic Response of Steel Controlled Rocking Frames with Replaceable Energy-Dissipating Fuses,” Sixth International Workshop on Connections in Steel Structures, Chicago, Illinois, June 24, 2008.

Eatherton, M., Hajjar, J. F., Deierlein, G. G., Krawinkler, H., Billington, S., and Ma, X. (2008).  “Controlled Rocking of Steel-Framed Buildings with Replaceable Energy-Dissipating Fuses,” 6th Annual Meeting of the George E. Brown, Jr. Network for Earthquake Engineering Simulation, Portland, Oregon, June 19, 2008.

Tort, C. and Hajjar, J. F. (2006). “Behavior and Design of Concrete-Filled Steel Tube Members and Frames,” American Concrete Institute Concrete Conference: Bridging the Carolinas: Fast Track Innovations, Charlotte, North Carolina, March 26-30, 2006.

Hajjar, J. F. and Leon, R. T. (2003). “An Overview of the Facilities of the George E. Brown, Jr., Network for Earthquake Engineering Simulation,” Behaviour of Steel Structures in Seismic Areas, STESSA 2003, Naples, Italy, June 9-12, 2003.

Hajjar, J. F., Schultz., A. E., Shield, C. K., and Saari, W. (2000). “Design Formulas for the Strength of Headed Stud Connections in Composite Infilled Frames,” Composite Construction in Steel and Concrete IV, United Engineering Foundation, Banff, Alberta, Canada, May 28-June 2, 2000.

Hajjar, J. F., Tong, X., Schultz, A. E., and Shield, C. K. (2000). “Seismic Behavior and Design of Steel Frames with Composite Reinforced Concrete Infill Walls,” Sixth ASCCS International Conference on Steel-Concrete Composite Structures, Los Angeles, California, March 22-24, 2000.

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