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

CDM Smith Professor and Department 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

RESILIENT AND SUSTAINABLE STEEL AND COMPOSITE STRUCTURES AT NORTHEASTERN UNIVERSITY

EXPERIMENTAL TESTING, COMPUTATIONAL SIMULATION, AND DESIGN STRATEGIES

BUILDINGS AND BRIDGES; SYSTEMS, MEMBERS AND CONNECTIONS; STRUCTURAL STABILITY

EARTHQUAKE ENGINEERING, HURRICANE MITIGATION, AND REGIONAL LOSS ASSESSMENT

ROBOTICS, ARTIFICIAL INTELLIGENCE, AND INFORMATION TECHNOLOGY FOR STRUCTURAL ENGINEERING

Click on the figures and links below for more information about each research and teaching area, or on the links to the left for publications and additional information.

Wikis

Research Wiki

Steel-Concrete Composite Structural Systems

Sustainable Structural Systems with Rocking, Self-Centering, and Articulated Energy-Dissipating Fuses

New Research Results and Publications

Avellaneda-Ramirez, R. E., Eatherton, M. R., Easterling, W. S., Schafer, B. W., and Hajjar, J. F. (2024). “Experimental Program on Behavior of Concrete-Filled Steel Deck Composite Diaphragms,” Journal of Structural Engineering, ASCE, Vol. 150, No. 2, February, Paper No. 04023255-1. (https://dx.doi.org/10.1061/JSENDH.STENG-12556)

Bond, R. B., Ren, P., Hajjar, J. F., and Sun, H. (2023). “An Unsupervised Machine Learning Approach for Ground Motion Clustering and Selection,” Earthquake Engineering and Structural Dynamics, December 12, 2023, open access. (https://doi.org/10.1002/eqe.4062)

Sanchez Gomez, M., Lundquist, J. K., Deskos, G., Arwade, S. R., Myers, A. T., and Hajjar, J. F. (2023). “Wind Fields in Category 1-3 Tropical Cyclones Are Not Fully Represented in Wind Turbine Design Standards,” Journal of Geophysical Research: Atmospheres, Vol. 128, Paper No. e2023JD039233. (https://doi.org/10.1029/2023JD039233)

Du, X., Hajjar, J. F., Bond, R. B., Ren, P., and Sun, H. (2023). “Clustering and Selection of Hurricane Wind Records using Autoencoder and k-means Algorithm,” Journal of Structural Engineering, ASCE, Vol. 149, No. 8, August, Paper No. 04023096-1. (https://doi.org/10.1061/JSENDH.STENG-12110)

Briggs, N. E., Avellaneda-Ramirez, R. E., Coleman, K., Schafer, B. W. Eatherton, M. R., Easterling, W. S., and Hajjar, J. F. (2023). “Cyclic Behavior of Composite Connections in Composite Floor Diaphragms,” Proceedings in Civil Engineering, Vol. 6, No. 1, February, pp. 566-577. (https://doi.org/10.1002/cepa.1937)

Yan, Y. and Hajjar, J. F. (2022). “Automated Creation of Geometric Models for the Superstructure Components of Steel Girder Bridges Through Exploiting Terrestrial Laser Scanning Data,” Automation in Construction, Vol. 142, Paper No. 104484. (https://doi.org/10.1016/j.autcon.2022.104484)

Degtyarev, V. V., Hicks, S. J., and Hajjar, J. F. (2022). “Design Models for Predicting Shear Resistance of Studs in Solid Concrete,” Steel and Composite Structures, Vol. 43, No. 3, May 10, pp. 293-309. (https://doi.org/10.12989/scs.2022.43.3.293)

Padilla-Llano, D. A., Schafer, B. W., and Hajjar, J. F. (2022). “Cyclic Fracture Simulation Through Element Deletion in Structural Steel Systems,” Journal of Constructional Steel Research, Vol. 189, February, Paper No. 107082. (https://doi.org/10.1016/j.jcsr.2021.107082)

Du, X., and Hajjar, J. F. (2021). “Three-dimensional Nonlinear Mixed Beam Element for Members with Angle and Tee Sections,” Thin-Walled Structures, Vol. 164, July, Paper No. 107817. (https://dx.doi.org/10.1016/j.tws.2021.107817)

Peterman, K., Kordas, J., Webster, M. D., D’Aloisio, J. A., and Hajjar, J. F. (2021). “Structural Performance of Axially- and Laterally-Loaded Cantilevers with Thermally-Improved Detailing,” Journal of Constructional Steel Research, Vol. 181, June, Paper No. 106617. (http://www.doi.org/10.1016/j.jcsr.2021.106617)

Wang, L., Webster, M. D., and Hajjar, J. F. (2020). “Behavior of a Sustainable Composite Floor System with Deconstructable Clamping Connectors,” Composite Construction in Steel and Concrete VIII, Rassati, G. A., Hajjar, J. F., and Leon, R. T. (eds.), American Institute of Steel Construction, Chicago, Illinois, pp. 251-262. (proceedings)

Hall, K., Linzell, D., Minsker, B., Saviz, C. M., and Hajjar, J. F. (2020). “Civil Engineering Education Summit: Mapping the Future of Civil Engineering Education,” American Society of Civil Engineers, Reston, Virginia, 54 pp. (report)

Bai, R., Hajjar, J. F., Liu, S.-W., and Chan, S.-L. (2020). “A Mixed-Field Timoshenko Beam-Column Element for Direct Analysis of Tapered I-Sections Members,” Journal of Constructional Steel Research, Vol. 172, Paper No. 106157. (https://doi.org/10.1016/j.jcsr.2020.106157)

Wang, L., Webster, M. D., and Hajjar, J. F. (2020). “Design for Deconstruction Using Sustainable Composite Beams with Precast Concrete Planks and Clamping Connectors,” Journal of Structural Engineering, ASCE, Vol. 146, No. 8, August, Paper No. 04020158-1. (https://doi.org/10.1061/(ASCE)ST.1943-541X.0002659)

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 Risk Assessment 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)

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.

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)

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, pp. 1-13. (http://dx.doi.org/10.1016/j.engstruct.2017.02.051)

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)

RECENT RESEARCH

	Principal Investigators: Hajjar, J. F., Kane, M., Laboy, M., Eckelman, M. Lesko, J., Arwade, S., Peterman, K., O’Donnell, F., Webster, M. D., and O’Malia, M. 4C2B: Century-Scale Carbon-Sequestration in Cross-Laminated Timber Composite Bolted-Steel Buildings Harnessing Emissions into Structures Taking Inputs from the Atmosphere (HESTIA), Advanced Research Projects Agency – Energy, Department of Energy December 6, 2022 to December 5, 2025
	J. F. Hajjar, A. W. Myers, S. R. Arwade, M. A. Lackner, D. J. Degroot, J. K. Lundquist, W. Pang, B. W. Schafer, B. F. Hobbs, and E. M. Hines. Ensuring Long-Term Availability and Bankability of Offshore Wind Through Hurricane Risk Assessment and Mitigation National Offshore Wind Research and Development Consortium (NOWRDC, Department of Energy) Massachusetts Clean Energy Center March 1, 2022 to February 28, 2024 A. M. Myers, S. R. Arwade, and J. F. Hajjar Reliability-based Hurricane Risk Assessment for Offshore Wind Farms National Science Foundation (CMMI-1234560) Massachusetts Clean Energy Center July 1, 2012 to August 31, 2016
	H. Sun, J. F. Hajjar, Y. Wang Physics-Reinforced Deep Learning for Structural Metamodeling National Science Foundation June 1, 2020 to May 31, 2024
	J. F. Hajjar, T. Padir, P. Boynton, S. Flynn Naval Expeditionary Sustainment: Integrated Battle Damage Assessment Tool Rapid Automated Damage Detection using Autonomous Robots (RAD²AR) Department of Homeland Security; Global Resilience Institute, Northeastern University July 1, 2017 to March 23, 2023
	J. F. Hajjar, A. Myers Massachusetts Research Partnership: Development of a National Offshore Wind Research Agenda Massachusetts Clean Energy Center September 1, 2016 to September 1, 2018
	B. Schafer, J. F. Hajjar, M. Eatherton, O. Avci, S. Easterling FastFloor: Behavior of Modular Steel Plate Floor Assemblies Steel Deck Innovation Initiative (SDII): Transforming Building Structural Resilience Through Innovation in Steel Diaphragms National Science Foundation, Charles Pankow Foundation, MKA Foundation, Nucor Corporation, Schuff Steel Company, Herrick Corporation, Cives Steel Company, Atlas Tube, Owen Steel, Metals Fabrication Company, American Institute of Steel Construction, American Iron and Steel Institute, Metal Building Manufacturer's Association, Steel Deck Institute, Steel Joist Institute September 1, 2015 to December 31, 2024
	M. Sznaier, A. Abur, L. Barrett, P. Boynton, O. Camps. J. Griffin, J. F. Hajjar, S. Marsella, E. Yeh CRISP Type 2: Identification and Control of Uncertain, Highly Interdependent Processes Involving Humans with Applications to Resilient Emergency Health Response National Science Foundation: Critical Resilient Interdependent Infrastructure Systems and Processes (CRISP) August 1, 2016 to July 31, 2021
	S. Singh, B. Akinci, D. Huber, S. Scherer, and J. F. Hajjar NRI-Large: Fast and Accurate Infrastructure Modeling and Inspection with Low-Flying Robots National Science Foundation (IIS-1328816) September 15, 2013 to August 31, 2018
	J. F. Hajjar and M. D. Webster Deconstructable Systems for Sustainable Design of Steel and Composite Structures National Science Foundation (CMMI-1200820) American Institute of Steel Construction (December 30, 2012 to February 28, 2016) July 1, 2012 to June 30, 2017

	J. F. Hajjar, M. D. Webster, and J. A. D'Aloisio Thermal Break Strategies for Cladding Systems in Building Structures Charles Pankow Foundation, American Institute of Steel Construction, American Composite Manufacturers Association and Pultrusion Industry Council September 1, 2012 to December 31, 2016
	J. Hajjar, P. Boynton, A. Ganguly, M. Ruth, and S. Flynn Disaster and Infrastructure Resiliency Planning at the Massachusetts Port Authority Massachusetts Port Authority July 1, 2013 to June 30, 2014
	J. Song and J. F. Hajjar An Integrated Platform for Validated Prediction of Collapse of Structures National Science Foundation (CMMI-1000666) August 16, 2010 to August 15, 2013
	S. R. Arwade, B. W. Schafer, and J. F. Hajjar Reconfiguring Steel Structures: Energy Dissipation and Buckling Mitigation Through the Use of Steel Foams National Science Foundation (CMMI-0970059) July 1, 2010 to June 30, 2013
	J. F. Hajjar, J. M. LaFave, and L. A. Fahnestock Calibration and Refinement of Illinois’ Earthquake Resisting System Bridge Design Methodology Illinois Department of Transportation January 1, 2009 to December 31, 2012
	J. F. Hajjar Cyclic Axial Testing of Buckling-Restrained Braces Nippon Steel & Sumikin Engineering Co., Ltd. August 1, 2007 to December 31, 2009.
	G. G. Deierlein, J. F. Hajjar, H. Krawinkler, and S. Billington NEESR-SG: Controlled Rocking of Steel-Framed Buildings with Replaceable Energy Dissipating Fuses National Science Foundation: George E. Brown, Jr. Network for Earthquake Engineering Simulation Research (NEESR) (CMMI-0530756), the American Institute of Steel Construction, and industrial sponsors September 1, 2005 to August 31, 2011
	R. T. Leon and J. F. Hajjar NEESR-II: System Behavior Factors for Composite and Mixed Structural Systems National Science Foundation: George E. Brown, Jr. Network for Earthquake Engineering Simulation Research (NEESR) (CMMI-0619047), the American Institute of Steel Construction, and industry sponsors October 1, 2006 to September 30, 2010
	J. F. Hajjar and B. Goodno Memphis Testbed Validation and Capstone Scenarios National Science Foundation: Mid-America Earthquake Center (EEC-9701785) October 1, 2005 to September 30, 2008
	J. F. Hajjar and R. J. Dexter Load Rating by Load Testing on Bridges Minnesota Department of Transportation, November 1, 1994 to October 31, 2006
	J. F. Hajjar Performance Assessment and Performance-Based Design Methodology for Composite Construction with Application to Concrete-Filled Steel Tube Structural Systems National Science Foundation (CMS-0084848) September 15, 2000 to August 31, 2006
	French, C. W., Schultz, A. E., Hajjar, J. F., Shield, C. K., Ernie, D. W., Du, D. H. C., and Dexter, R. J. A System for Multi-Axial Subassemblage Testing (MAST) National Science Foundation: George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) (CMS-0086602) January 1, 2001 to September 30, 2005

For Academia: Research, Teaching, and Service may be viewed on several topics in steel and composite steel/concrete building and bridge structures, structural mechanics and analysis, and regional loss assessment. See Publications, Courses and Advising, Sponsored Research, Current Research, and Professional Activities in the menu to the left.

For Engineering Practice: Consulting Services are available for steel and composite steel/concrete building and bridge structures. Specialites include both steel and composite structural systems for seismic and non-seismic design, steel and composite beam-column design, structural stability (including all new provisions of the AISC Specification), all forms of linear and nonlinear structural analysis, and analysis, design, and rating of curved girder and skew support bridges. See Professional Licensure and Consulting, Professional Experience, and Professional Activities in the menu to the left.

For information about the growth and impact of the Department of Civil and Environmental Engineering: NU CEE Summary of Department

For information about our undergraduate program in civil engineering: Northeastern University CEE Undergraduate Program

For information about our graduate program in civil engineering: Northeastern University CEE Graduate Program

For undergraduate application materials and admissions information: Northeastern University College of Engineering Undergraduate Programs

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The views and opinions in this webpage are strictly those of the page author. The contents of this webpage have not been reviewed or approved by Northeastern University.

Last modified: January 15, 2024
URL of this webpage: http://www.coe.neu.edu/~jfhajjar/home/jfhajjar.htm
Please send comments or suggestions regarding this webpage to jf.hajjar@northeastern.edu.