Dimitrios Lignos
Full Professor
+41 21 693 24 27
EPFL
>
ENAC
>
ENAC-SGC
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SGC-ENS
EPFL ENAC IIC RESSLAB
GC B3 485 (Bâtiment GC)
Station 18
1015 Lausanne
Web site: Web site: https://resslab.epfl.ch/
Fields of expertise
-Performance-Based Design
-Seismic Risk Assessment and Retrofit of Existing Structures
-Nonlinear Analysis with Emphasis on Deterioration Phenomena
-Nonlinear Analysis, Design & Evaluation of Steel and Composite-steel Concrete Structures
-Multi-scale Experimental Testing
-Supplemental Damping Systems
-Methods for Earthquake Loss Estimation
-Seismic Risk Assessment and Retrofit of Existing Structures
-Nonlinear Analysis with Emphasis on Deterioration Phenomena
-Nonlinear Analysis, Design & Evaluation of Steel and Composite-steel Concrete Structures
-Multi-scale Experimental Testing
-Supplemental Damping Systems
-Methods for Earthquake Loss Estimation
Biography
Prof. Lignos joined the École Polytechnique Féderale de Lausanne (EPFL) in 2016 from McGill University in Canada where he was a tenured Associate Professor and a William Dawson Scholar for Infrastructure Resilience. He holds a diploma (National Technical University of Athens, NTUA, 2003), M.S. (Stanford University, 2004) and Ph.D. (Stanford University, 2008). In addition, he was a post-doctoral scientist at Stanford University (2009) and in Kyoto University (2010).Prof. Lignos teaches graduate and undergraduate courses in seismic design, nonlinear behaviour of steel and composite structures as well as supplemental damping systems, Structural Stability, Nonlinear Analysis and Performance-based Earthquake Engineering. His awards for teaching, research and service in Civil Engineering include the 2011, 2021 Outstanding Teaching Awards (Faculty of Engineering, McGill University, Civil Engineering Institute, EPFL), as well as the Outstanding reviewer (2012, 2013, 2021) award from ASCE, the 2013 State-of-the-Art in Civil Engineering Award by ASCE and the 2014 Christophe Pierre Award for Research Excellence - Early Career. Just recently, he received the 2019 Walter L. Huber Civil Engineering Research Prize from ASCE for significant contributions in developing state of the art methods to simulate extreme limit states in steel structures.
Prof. Lignos is a member of ASCE and the Earthquake Engineering Research Institute. He acts as an Associate Editor for Metal Structures and Seismic Effects of the ASCE Journal of Structural Engineering. He joined the Editorial Board of Earthquake Spectra and Earthquake Engineering and Structural Dynamics International journals. He serves as an acting member of the CEN/TC 250/SC 8/WG 2 and has been selected as a member of the Project Team (PT2) for the Eurocode 8-Part 1-1 and 1-2 Current Revisions for Steel and Composite Structures. He is also a member of the Canadian Standards Association (CSA) S16 technical committee for Steel Structures. Prof. Lignos is involved as a NEHRP consultant in numerous research-to-practice projects related to the behaviour and nonlinear modelling and analysis of structures applicable to the engineering practice through the Applied Technology Council (ATC).
Current work
Structural stability of steel and composite-steel concrete structuresSupplemental damping systems
Seismic risk and loss assessment
Computational mechanics-based simulation
Inverse plasticity problems
High-performance steel materials
Education
Post-Doctorate
Seismic Assessment of Existing Tall Structures under Long-Duration Ground Motions, Japan Society for the Promotion of Science (JSPS) Scholar
Kyoto University
09/2009 - 08/2010
Post-Doctorate
Seismic Retrofit of Existing Steel Structures with Innovative Materials
Stanford University
09/2008 - 09/2009
Ph.D.
Sidesway Collapse of Deteriorating Structural Systems under Seismic Excitations
Stanford University
09/2004 - 09/2008
Master or Science
Performance-Based Earthquake Engineering, Program: Structural Engineering and Geomechanics
Stanford University
09/2003 - 06/2004
Diploma
Civil Engineering/Structural Engineering, Diploma Thesis: Evaluation of Nonlinear Analysis Methods for Seismic Assessment of Steel Structures
National Technical University of Athens (NTUA)
10/1998 - 06/2003
Awards
2011 : Outstanding Teaching Award : McGill University, Faculty of Engineering
2013 : Outstanding reviewer award : American Society of Civil Engineers (ASCE)
2013 : State-of-the-Art in Civil Engineering Award : ASCE
2014 : Christophe Pierre Award for Research Excellence - Early Career : McGill University, Montreal, Canada The Christophe Pierre Award for Research Excellence recognizes excellence in research by academic staff in the Faculty of Engineering.
2019 : ASCE Walter L. Huber Civil Engineering Research Prize : The Walter L. Huber Civil Engineering Prize, which was founded in 1946, is awarded to members of the ASCE in any grade for notable achievements in research related to civil engineering. It is considered the highest-level mid-career research prize.
Publications
Infoscience publications
List of Peer Reviewed Publications
2025
Journal Articles
A Multiaxial Plasticity Model with Softening for Simulating Inelastic Local Buckling in Steel Beam Columns under Monotonic Loading through Fiber Elements
Journal of Structural Engineering. 2025. DOI : 10.1061/JSENDH.STENG-13136.Evaluation of overstrength-based interaction checks for columns in steel moment frames
Journal of Constructional Steel Research. 2025. DOI : 10.1016/j.jcsr.2024.109123.2024
Journal Articles
Full-Scale Tests to Characterize the Effect of Framing Action and Slab Continuity on the Collapse Capacity of Composite Frames Under Cyclic Loading
Earthquake Engineering and Structural Dynamics. 2024. DOI : 10.1002/eqe.4296.Uniaxial material model with softening for simulating the cyclic behavior of steel tubes in concrete-filled steel tube beam-columns
Earthquake Engineering and Structural Dynamics. 2024. DOI : 10.1002/eqe.4204.Cyclic pushover analysis for seismic response evaluation of a full-scale 10-story steel building tested on the E-Defense shake-table
Journal of Building Engineering. 2024. DOI : 10.1016/j.jobe.2024.110552.Sharing data and code facilitates reproducible and impactful research
Earthquake Spectra. 2024. DOI : 10.1177/87552930241259397.Conference Papers
A Novel Fiber Element to Simulate Interactive Local and Lateral Torsional Buckling in Steel Moment Frames
2024. Stability Conference Structural Stability Research Council, San Antonio, United States, 2024-03-19 - 2024-03-22.Proposed Limits of Stiffener Spacing Requirements for Short and Intermediate Length EBF Steel Links
2024. 11th International Conference on the Behaviour of Steel Structures in Seismic Areas, Salerno, Italy, 2024-07-08 - 2024-07-10. p. 745 - 755. DOI : 10.1007/978-3-031-62884-9_65.Modelling and Experimental Investigation of Ductile Crack Initiation in Welded Connections with Bevelled Backing Bars and Inelastic Panel Zones
2024. 11th International Conference on the Behaviour of Steel Structures in Seismic Areas, Salerno, Italy, 2024-07-08 - 2024-07-10. p. 687 - 698. DOI : 10.1007/978-3-031-62884-9_60.Seismic Performance of Steel Moment-Resisting Frames Utilizing Dissipative Embedded Column Base Connections
2024. 11th International Conference on the Behaviour of Steel Structures in Seismic Areas, Salerno, Italy, 2024-07-08 - 2024-07-10. p. 926 - 936. DOI : 10.1007/978-3-031-62884-9_81.Theses
A Softening Constitutive Law and Gradient-Inelastic Fiber-Based Element for 3-Dimensional Frame Simulations Under Seismic Excitations
Lausanne, EPFL, 2024. DOI : 10.5075/epfl-thesis-10495.Student Projects
Comparative Design of Two-Storey Buildings Using the New Eurocode 8
2024Assessment of resistance models according to SIA 263 and the new Eurocode 3 for lateral torsional buckling of I-shaped bridge girders
2024Assessment of existing steel structures
2024Development of models for assessing corroded steel girder web panels in bridges
2024Experimental validation, numerical modelling and design comparison for steel beams against lateral torsional buckling
20242023
Journal Articles
Backbone curve variations on steel building seismic response
Earthquake Spectra. 2023. DOI : 10.1177/87552930231172529.Experiments and proposed model for residual stresses in hot-rolled wide flange shapes
Journal Of Constructional Steel Research. 2023. DOI : 10.1016/j.jcsr.2023.108069.Proposed Stiffener Spacing Requirements for the Seismic Design of Short Links in Eccentrically Braced Steel Frames
Journal Of Structural Engineering. 2023. DOI : 10.1061/JSENDH.STENG-11756.Uniaxial Cyclic and Tensile Tests on Structural Metallic Materials
Journal Of Structural Engineering. 2023. DOI : 10.1061/JSENDH.STENG-12037.A Displacement-Based Fiber Element to Simulate Interactive Lateral Torsional and Local Buckling in Steel Members
Journal Of Structural Engineering. 2023. DOI : 10.1061/JSENDH.STENG-11889.Influence of gravity connections and damper activation forces on the seismic behavior of steel CBF buildings with dissipative floor connectors
Earthquake Engineering & Structural Dynamics. 2023. DOI : 10.1002/eqe.3874.The automated collapse data constructor technique and the data-driven methodology for seismic collapse risk assessment
Earthquake Engineering & Structural Dynamics. 2023. DOI : 10.1002/eqe.3865.Full-Scale Experiments of Cyclically Loaded Welded Moment Connections with Highly Dissipative Panel Zones and Simplified Weld Details
Journal of Structural Engineering. 2023. DOI : 10.1061/JSENDH.STENG-12128.Seismic Assessment and Retrofit of Pre-Northridge High Rise Steel Moment Resisting Frame Buildings with Bilinear Oil Dampers
Buildings. 2023. DOI : 10.3390/buildings13010139.Conference Papers
Proposed Limits of Stiffener Spacing Requirements for EBF Links Within the Framework of Eurocode 8
2023. 10th National Conference of Steel Structures, Athens, Greece, October 19-21, 2023.The new Chapter 9 of Eurocode 8 Part 3 for Seismic Assessment of Existing Steel Structures
2023. 10th National Conference of Steel Structures, Athens, Greece, October 19-21, 2023.Full Scale Experiments of a Composite Steel Moment Resisting Frame: Behavioral Insights and Implications on Seismic Design
2023. 10th National Conference of Steel Structures, Athens, Greece, October 19-21, 2023.Dissipative Embedded Column Bases for Enhanced Seismic Performance of Steel Moment Resisting Frames
2023. 10th National Conference of Steel Structures, Athens, Greece, October 19-21, 2023.Proposed Panel Zone Model for Beam-To-Column Joints in Steel Moment Resisting Frames
2023. 10th National Conference of Steel Structures, Athens, Greece, October 19-21, 2023.The use of ductile steel fuses for the seismic protection of acceleration sensitive non- structural components: Numerical and Experimental verification
2023. 10th National Conference of Steel Structures, Athens, Greece, October 19-21, 2023.Experimental Evaluation and Modeling of Residual Stress Distributions for Hot-Rolled Wide Flange Steel Members
2023. 10th National Conference of Steel Structures, Athens, Greece, October 19-21, 2023.Experimental Investigation of Instability-Free Welded Moment Connections With Simplified Weld Details
2023. 10th National Conference of Steel Structures, Athens, Greece, October 19-21, 2023.Digital-Image-Correlation for Simulating Cyclic Local Buckling in Steel Beams
2023. Eurosteel, Amsterdam, Holland, September 12-14, 2023. p. 1717 - 1722. DOI : 10.1002/cepa.2671.Towards instability-free welded moment connections
2023. 13th International Congress on Mechanics, Patras, Greece, August 24-27, 2022. p. 521 - 530.Surrogate modelling for seismic collapse risk assessment of steel moment resisting frames
2023. Canadian Conferennce - Pacific Conference on Earthquake Engineering 2023, Vancouver, British Columbia, Canada, June 25th - June 30th 2023.Geometric tolerances of welded connections with inelastic panel zones
2023. EUROSTEEL 2023, Amsterdam, The Neatherlands, Setember 12-14, 2023. p. 1550 - 1555. DOI : 10.1002/cepa.2272.Hysteretic behaviour of welded connections with highly inelastic panel zones
2023. EUROSTEEL 2023, Setember 12-14, 2023, Amsterdam, The Neatherlands. p. 1556 - 1561. DOI : 10.1002/cepa.2676.Proposed residual stress model for hot‐rolled wide flange steel cross sections
2023. EUROSTEEL 2023, Setember 12-14, 2023, Amsterdam, The Neatherlands. p. 1711 - 1716. DOI : 10.1002/cepa.2736.Student Projects
Finite element investigation of the Slotted-Hidden-Gap (SHG) connection for square HSS bracing members under cyclic loading
2023Response history analysis of steel buildings with highly inelastic panel zones
2023Use of Iron-Based Shape Memory Alloys for Anchor Yield Column Base Connections
2023Datasets
Database of Residual Stress Measurements on Hot-rolled Wide Flange Steel Cross Sections
2023.2022
Journal Articles
Experimental Investigation of the Inelastic Cyclic Behavior of Concrete-Filled Double-Skin Tubular Beam-Columns with Corrugated Inner Skins and Ultrahigh-Strength Corner Tubes
Journal Of Structural Engineering. 2022. DOI : 10.1061/(ASCE)ST.1943-541X.0003493.Effect of thermomechanical treatment and microstructure on pseudo-elastic behavior of Fe-Mn-Si-Cr-Ni-(V, C) shape memory alloy
Materials Science And Engineering A-Structural Materials Properties Microstructure And Processing. 2022. DOI : 10.1016/j.msea.2022.143917.Best-fit constraint equations for coupling mixed-dimension simulation models with wide flange cross sections
Finite Elements In Analysis And Design. 2022. DOI : 10.1016/j.finel.2022.103782.Seismic design and performance of steel concentrically braced frame buildings with dissipative floor connectors
Earthquake Engineering & Structural Dynamics. 2022. DOI : 10.1002/eqe.3733.Proposed Backing Bar Detail in Welded Beam-to-Column Connections for Seismic Applications
Journal Of Structural Engineering. 2022. DOI : 10.1061/(ASCE)ST.1943-541X.0003374.Closure to "Experimental Evaluation of Steel Columns under Seismic Hazard-Consistent Collapse Loading Protocols" by Yusuke Suzuki and Dimitrios G. Lignos
Journal Of Structural Engineering. 2022. DOI : 10.1061/(ASCE)ST.1943-541X.0003362.Low-damage steel structures for enhanced life-cycle seismic performance
Stahlbau. 2022. DOI : 10.1002/stab.202200023.Seismic demands of steel moment resisting frames with inelastic beam-to-column web panel zones
Earthquake Engineering & Structural Dynamics. 2022. DOI : 10.1002/eqe.3629.Development and Experimental Validation of Dissipative Embedded Column Base Connections for Enhanced Seismic Performance of Steel Moment-Resisting Frames
Journal Of Structural Engineering. 2022. DOI : 10.1061/(ASCE)ST.1943-541X.0003259.Proposed nonlinear macro-model for seismic risk assessment of composite-steel moment resisting frames
Earthquake Engineering & Structural Dynamics. 2022. DOI : 10.1002/eqe.3610.Finite element modeling and behavior of dissipative embedded column base connections under cyclic loading
Journal Of Constructional Steel Research. 2022. DOI : 10.1016/j.jcsr.2021.107063.Seismic performance of steel columns interacting with embedded column bases while exhibiting inelastic deformations
Engineering Structures. 2022. DOI : 10.1016/j.engstruct.2021.113381.Warping-Inclusive Kinematic Coupling in Mixed-Dimension Macro Models for Steel Wide Flange Beam Columns
ASCE Journal of Structural Engineering. 2022. DOI : 10.1061/(ASCE)ST.1943-541X.0003211.Conference Papers
Analytical Studies in Support of an Improved Approach to the Design of Acceleration-Sensitive Nonstructural Elements
2022. Fifth International Workshop on the Seismic Performance of Non-Structural Elements (SPONSE), Stanford University, Stanford, CA, USA, December 5-7, 2022.Experimental Study to Validate an Improved Approach to Design Acceleration-Sensitive Nonstructural Components
2022. Fifth International Workshop on the Seismic Performance of Non-Structural Elements (SPONSE), Stanford University, Stanford, CA, USA, December 5-7, 2022.Assessment of stiffener spacing design requirements for intermediate EBF links via nonlinear finite element analysis
2022. Fifth National Conference on Earthquake Engineering, Athens, Greece, October 20-22, 2022.Soil-Structure Interaction effects on the seismic behavior of steel moment resisting frames: Preliminary assessment
2022. 3rd EUROPEAN CONFERENCE ON EARTHQUAKE ENGINEERING & SEISMOLOGY, BUCHAREST, ROMANIA, September 4-9, 2022.Seismic stability of steel moment resisting frames with inelastic panel zones
2022. 12th National Conference on Earthquake Engineering, Salt Lake City, Utah, June 27 - July 1 2022.Development of dissipative embedded columns base connections for mitigating column axial shortening
2022. The 10th International Conference on the BEHAVIOUR OF STEEL STRUCTURES IN SEISMIC AREAS, Timisoara, Romania, May 25-27, 2022. p. 269 - 275. DOI : 10.1007/978-3-031-03811-2_25.Full-scale testing of European steel beams with reduced beam section under reversed cyclic loading
2022. The 10th International Conference on the BEHAVIOUR OF STEEL STRUCTURES IN SEISMIC AREAS, Timisoara, Romania, May 25-27, 2022. p. 166 - 172. DOI : 10.1007/978-3-031-03811-2_13.Theses
Seismic Design and Behavior of Steel Braced Frame Buildings with Friction Dampers as Dissipative Floor Connectors
Lausanne, EPFL, 2022. DOI : 10.5075/epfl-thesis-9708.Welded moment connections with highly dissipative panel zones for enhanced seismic performance of steel moment frames
Lausanne, EPFL, 2022. DOI : 10.5075/epfl-thesis-9513.The Role of the Composite Floor System and Framing Action in the Seismic Performance of Composite Steel Moment-Resisting Frames
Lausanne, EPFL, 2022. DOI : 10.5075/epfl-thesis-8700.Student Projects
Assessment of resistance models according to SIA 263 and the new Eurocode 3 for lateral torsional buckling of I-shaped bridge girders
2022Seismic performance of structures incorporating seismic isolation with lead-rubber bearings
2022Development of a Python-Based Simulation Tools Library for Composite Steel Concrete Structures
2022Assessment of Resistance Models According to SIA 263 & Eurocode 3 Provisions for Lateral Torsional Buckling of I-Shaped Hot-Rolled Members
2022Non-linear modeling and seismic risk assessment of composite steel moment resisting frames
20222021
Journal Articles
Experimental study of sliding friction damper with composite materials for earthquake resistant structures
Engineering Structures. 2021. DOI : 10.1016/j.engstruct.2021.113063.Cyclic metal plasticity model parameters with limited information: a constrained optimization approach
Journal of Engineering Mechanics. 2021. DOI : 10.1061/(ASCE)EM.1943-7889.0001922.Fragility Assessment of Beam-Slab Connections for Informing Earthquake-Induced Repairs in Composite-Steel Moment Resisting Frames
Frontiers in Built Environment. 2021. DOI : 10.3389/fbuil.2021.691553.Experimental Evaluation of Steel Columns under Seismic Hazard-Consistent Collapse Loading Protocols
Journal Of Structural Engineering. 2021. DOI : 10.1061/(ASCE)ST.1943-541X.0002963.Constitutive Modeling of Structural Steels: Nonlinear Isotropic/Kinematic Hardening Material Model and Its Calibration
Journal Of Structural Engineering. 2021. DOI : 10.1061/(ASCE)ST.1943-541X.0002964.Development of Inelastic Panel Zone Database
Journal Of Structural Engineering. 2021. DOI : 10.1061/(ASCE)ST.1943-541X.0002957.Proposed Panel Zone Model for Seismic Design of Steel Moment-Resisting Frames
Journal Of Structural Engineering. 2021. DOI : 10.1061/(ASCE)ST.1943-541X.0002935.Rate-dependent model for simulating the hysteretic behavior of low-yield stress buckling-restrained braces under dynamic excitations
Engineering Structures. 2021. DOI : 10.1016/j.engstruct.2020.111659.Seismic design of non-dissipative embedded column base connections
Journal of Constructional Steel Research. 2021. DOI : 10.1016/j.jcsr.2020.106417.Closure to "Proposed Updates to the ASCE 41 Nonlinear Modeling Parameters for Wide-Flange Steel Columns in Support of Performance-Based Seismic Engineering" by Dimitrios G. Lignos, Alexander R. Hartloper, Ahmed Elkady, Gregory G. Deierlein, and Ronald Hamburger
Journal Of Structural Engineering. 2021. DOI : 10.1061/(ASCE)ST.1943-541X.0002896.Anchor-yield exposed column bases for minimizing residual deformations in seismic-resistant steel moment frames
Earthquake Engineering & Structural Dynamics. 2021. DOI : 10.1002/eqe.3392.Experimental behavior of iron-based shape memory alloys under cyclic loading histories
Construction and Building Materials. 2021. DOI : 10.1016/j.conbuildmat.2020.121712.Conference Papers
Hysteretic Behaviour of Shear Stud Connectors in Composite Steel Moment‐Resisting Frames
2021. EUROSTEEL 2021 Sheffield — Steel's coming home, Sheffield, England, September 1-3, 2021. p. 575 - 582. DOI : 10.1002/cepa.1333.EaRL: An Open-Source Software for Earthquake Risk, Loss and Lifecycle Assessment
2021. The 13th International Conference on Structural Safety and Reliability (ICOSSAR 2021), Shanghai, P.R. China, June 21-25, 2021.Theses
Reduced-order Models for Simulating Coupled Geometric Instabilities in Steel Beam-columns Under Inelastic Cyclic Straining
Lausanne, EPFL, 2021. DOI : 10.5075/epfl-thesis-8504.Development of Dissipative Steel Column-Base Connections for Steel Moment-Resisting Frames under Seismic Loading
Lausanne, EPFL, 2021. DOI : 10.5075/epfl-thesis-8337.Student Projects
Intelligent Management of Underground Infrastructure
2021Finite element investigation of stability bracing force demands of steel moment resisting frame columns under cyclic loading
2021Seismic Retrofitting of Existing Steel Structures With Buckling Restrained Bracings
2021Experimental investigation of the cyclic properties of welds in mild structural steels
2021Influence of residual stresses on the buckling capacity of axially loaded steel columns
20212020
Journal Articles
EaRL—Software for Earthquake Risk, Loss and Lifecycle Analysis
SoftwareX. 2020. DOI : 10.1016/j.softx.2020.100607.Hysteretic Behavior of Moment-Resisting Frames Considering Slab Restraint and Framing Action
Journal Of Structural Engineering. 2020. DOI : 10.1061/(ASCE)ST.1943-541X.0002696.Fiber-based hysteretic model for simulating strength and stiffness deterioration of steel hollow structural section columns under cyclic loading
Earthquake Engineering & Structural Dynamics. 2020. DOI : 10.1002/eqe.3324.Consistency in Solving the Inverse Problem of the Voce-Chaboche Constitutive Model for Plastic Straining
ASCE Journal of Engineering Mechanics. 2020. DOI : 10.1061/(ASCE)EM.1943-7889.0001839.Proposed methodology for building-specific earthquake loss assessment including column residual axial shortening
Earthquake Engineering & Structural Dynamics (EESD). 2020. DOI : 10.1002/eqe.3242.Simulating Cyclic Local Buckling–Induced Softening in Steel Beam-Columns Using a Nonlocal Material Model in Displacement-Based Fiber Elements
ASCE Journal of Structural Engineering. 2020. DOI : 10.1061/(ASCE)ST.1943-541X.0002457.Experimental Evaluation and Numerical Modeling of Wide-Flange Steel Columns Subjected to Constant and Variable Axial Load Coupled with Lateral Drift Demands
Journal Of Structural Engineering. 2020. DOI : 10.1061/(ASCE)ST.1943-541X.0002499.Development of collapse-consistent loading protocols for experimental testing of steel columns
Earthquake Engineering & Structural Dynamics (EESD). 2020. DOI : 10.1002/eqe.3225.Steel column stability and implications in the seismic assessment of steel structures according to Eurocode 8 Part 3
Stahlbau. 2020. DOI : 10.1002/stab.201900108.Conference Papers
Experimental Study of Sliding Friction Damper for High-Performance Steel Structures
2020. 17WCEE 17th World Conference on Earthquake Engineering, Sendai, Japan, September 13-18, 2020 (original).Collapse-Consistent Protocols for Experimental Testing of Steel Columns under Multi-axial Cyclic Loading
2020. 8th International Conference on Advances in Experimental Structural Engineering, Christchurch, New Zealand, February 3-5, 2020.Student Projects
Seismic Rehabilitation of Deficient Steel Braced Frames with Conventional and Innovative Retrofit Techniques
2020Experimental Behavior and Nonlinear Modeling of iron-based Shape Memory Alloys (SMAs) under Inelastic Cyclic Straining
2020Seismic Retrofit of Existing Steel Concentrically Braced Frames with Intentional Eccentricity Braces
2020Seismic retrofit of existing steel concentrically braced frame with friction dampers
20202019
Journal Articles
Seismic Stability of Wide-Flange Steel Columns Interacting with Embedded Column Base Connections
Journal of Structural Engineering. 2019. DOI : 10.1061/(ASCE)ST.1943-541X.0002410.Proposed Updates to the ASCE 41 Nonlinear Modeling Parameters for Wide-Flange Steel Columns in Support of Performance-Based Seismic Engineering
Journal of Structural Engineering. 2019. DOI : 10.1061/(ASCE)ST.1943-541X.0002353.Composite steel beam database for seismic design and performance assessment of composite-steel moment-resisting frame systems
Bulletin of Earthquake Engineering. 2019. DOI : 10.1007/s10518-019-00564-w.Full-scale testing of stiffened extended shear tab connections under combined axial and shear forces
Engineering Structures. 2019. DOI : 10.1016/j.engstruct.2019.01.125.Recommendations for Improved Welding Procedures for Thick Steel Plates Through Thermo-Mechanical Analysis
International Journal of Steel Structures. 2019. DOI : 10.1007/s13296-018-0110-2.Experimental investigation of steel building gravity framing systems under strong earthquake shaking
Soil Dynamics and Earthquake Engineering. 2019. DOI : 10.1016/j.soildyn.2018.10.017.Conference Papers
An explicit model for exposed column base connections and its parameter sensitivity
2019. 12th Pacific Structural Steel Conference, Tokyo, Japan, November 9-11, 2019.Concepts to minimize earthquake-induced column axial shortening in steel moment-resisting frames
2019. 12th Pacific Structural Steel Conference, Tokyo, Japan, November 9-11, 2019.Exposed Column Base Connections for Minimizing Earthquake-induced Residual Deformations in Steel Moment-Resisting Framess
2019. SECED Earthquake Risk and Engineering Towards a Reslient World, Greenwich, London, September 9-11, 2019.Behavior of iron-based Shape Memory Alloys under Cyclic Loading Histories
2019. Fifth Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures, Postdam, Germany, August 27-29, 2019.Sensitivity of Simulated Steel Column Instabilities to Plasticity Model Assumptions
2019. 12th Canadian Conference on Earthquake Engineering (12CCEE), Quebec, Canada, June 17-20, 2019.A practical method for seismic retrofit of tall buildings with supplemental damping
2019. 12th Canadian Conference on Earthquake Engineering (12CCEE), Quebec, Canada, June 17-20, 2019.Book Chapters
Capacity design principles for the ductile behaviour of conventional and high-performance steel structures under earthquake shaking
SteelDoc 03/19: Construction parasismique en acier (tec 05:2019); Zürich: Centre suisse de la construction métallique (SZS), 2019.Reports
A Nonlinear Isotropic/Kinematic Hardening Model for Materials with Discontinuous Yielding
20192018
Journal Articles
Simulating Local Buckling-Induced Softening in Steel Members Using an Equivalent Nonlocal Material Model in Displacement-Based Fiber Elements
Journal of Structural Engineering. 2018. DOI : 10.1061/(ASCE)ST.1943-541X.0002189.Adaptive numerical method algorithms for nonlinear viscous and bilinear oil damper models subjected to dynamic loading
Soil Dynamics and Earthquake Engineering. 2018. DOI : 10.1016/j.soildyn.2018.06.021.Improved Seismic Design and Nonlinear Modeling Recommendations for Wide-Flange Steel Columns
Journal of Structural Engineering. 2018. DOI : 10.1061/(ASCE)ST.1943-541X.0002166.Behaviour of stiffened extended shear tab connections under gravity induced shear force
Journal of Constructional Steel Research. 2018. DOI : 10.1016/j.jcsr.2018.06.011.Fragility Curves for Wide-Flange Steel Columns and Implications on Building-Specific Earthquake-Induced Loss Assessment
Earthquake Spectra. 2018. DOI : 10.1193/122017EQS260M.Nonmodel-based framework for rapid seismic risk and loss assessment of instrumented steel buildings
Engineering Structures. 2018. DOI : 10.1016/j.engstruct.2017.11.045.Seismic Performance Characterization of Wood-Sheathed and Cold-Formed Steel Framed Floor and Roof Diaphragm Structures
Journal of Structural Engineering. 2018. DOI : 10.1061/(ASCE)ST.1943-541X.0001962.Full-Scale Testing of Deep Wide-Flange Steel Columns under Multiaxis Cyclic Loading: Loading Sequence, Boundary Effects, and Lateral Stability Bracing Force Demands
Journal of Structural Engineering. 2018. DOI : 10.1061/(ASCE)ST.1943-541X.0001937.Assessment of structural damage detection methods for steel structures using full-scale experimental data and nonlinear analysis
Bulletin of Earthquake Engineering. 2018. DOI : 10.1007/s10518-017-0288-2.Fatigue Strength Upgrading of Cover Plate Ends by Welded Extensions in Existing Steel Bridge Girders
Journal of Bridge Engineering. 2018. DOI : 10.1061/(ASCE)BE.1943-5592.0001228.Conference Papers
Fiber-based model for earthquake-induced collapse simulation of steel frame buildings
2018. 11th U.S. National Conference on Earthquake Engineering, Los Angeles, California, USA, June 25-29, 2018.Guidelines on nonlinear dynamic analysis for seismic design of steel moment frames
2018. 11th U.S. National Conference on Earthquake Engineering (11NCEE), Los Angeles, California, USA, June 25-29, 2018.Composite beam effects and implications to seismic design provisions
2018. 16th European Conference on Earthquake Engineering (16ECEE), Thessaloniki, Greece, June 18-21, 2018.Seismic retrofit of steel tall buildings with bilinear oil dampers
2018. 16th European Conference on Earthquake Engineering, Thessaloniki, Greece, June 18-21, 2018.Revised ASCE-41 modeling recommendations for moment-resisting frame systems
2018. 11th U.S. National Conference on Earthquake Engineering (11NCEE), Los Angeles, California, USA, June 25-29, 2018.Influence of non-structural components on the seismic response of cold-formed steel structures
2018. 16th European Conference on Earthquake Engineering, Thessaloniki, Greece, June 18-21, 2018.Improving the collapse risk of steel structures with high-performance steel
2018. 16th European Conference on Earthquake Engineering, Thessaloniki, Greece, June 18-21, 2018.EaRL: Toolbox for Earthquake Risk and Loss Assessment of Building Assets
2018. 16th European Conference on Earthquake Engineering, Thessaloniki, Greece, June 18-21, 2018.Influence of embedded steel column base strength on earthquake-induced residual deformations
2018. 16th European Conference on Earthquake Engineering, Thessaloniki, Greece, June 18-21, 2018.Earthquake-Induced Collapse Risk and Loss Assessment of Steel Concentrically Braced Frames
2018. 8th International Conference of the Seismic Behaviour of Steel Structures in Seismic Areas, Christchurch, New Zealand, February 14-17, 2018.Effect of Column Base Flexibility on Earthquake-Induced Residual Deformations of Steel Columns
2018. 9th International Conference on the Behaviour of Steel Structures in Seismic Areas (STESSA 2018), Christchurch, New Zealand, February 14-17, 2018. p. 149 - 156. DOI : 10.4028/www.scientific.net/KEM.763.149.Earthquake-Induced Collapse Risk and Loss Assessment of Steel Concentrically Braced Frames
2018. 9th International Conference on the Behaviour of Steel Structures in Seismic Areas, Christchurch, New Zealand, February 14 - 17, 2018.Theses
Earthquake-induced Collapse of Steel Moment Resisting Frames with Conventional and High-Performance Steel Columns
McGill University, 2018.Student Projects
SEISMIC RETROFIT OF GUSSET PLATE CONNECTIONS THROUGH FINITE ELEMENT ANALYSIS MASTER PROJECT
2018Seismic Performance Evaluation and Retrofit of Existing Steel Frame Buildings
20182017
Journal Articles
A probabilistic approach for assessing discontinuities in structural steel components based on Charpy-V-notch tests
Engineering Structures. 2017. DOI : 10.1016/j.engstruct.2017.05.016.Earthquake-induced loss assessment of steel frame buildings with special moment frames designed in highly seismic regions
Earthquake Engineering & Structural Dynamics. 2017. DOI : 10.1002/eqe.2898.Effect of Modeling Assumptions on the Earthquake-Induced Losses and Collapse Risk of Steel-Frame Buildings with Special Concentrically Braced Frames
ASCE Journal of Structural Engineering. 2017. DOI : 10.1061/(ASCE)ST.1943-541X.0001851.Conference Papers
Development of Bidirectional Cyclic Lateral Loading Protocols for Experimental Testing of Steel Wide-Flange Columns
2017. 3rd Huixian International Forum on Earthquake Engineering for Young Researchers, University of Illinois, Urbana-Champaign, USA, August 11-12, 2017.Approximate Method for Performance-Based Seismic Assessment of Steel Moment-Resisting Frames
2017. 16th World Conference on Earthquake Engineering (16WCEE), Santiago, Chile, January 9-13, 2017.Effect of Column Base Flexibility on the Hysteretic Response of Wide Flange Steel Columns
2017. 3rd Huixian International Forum on Earthquake Engineering for Young Researchers, University of Illinois, Urbana-Champaign, United States, August, 11-12, 2017.The seismic stability and ductility of steel columns interacting with concrete footings
2017. 8th International Conference on Composite Construction in Steel and Concrete, Jackson Hole, Wyoming, USA, July 30 - August 2, 2017.Stability of extended beam-to-girder shear tab connections under gravity induced shear force
2017. Annual Stability Conference Structural Stability Research Council, San Antonio, Texas, USA, March 22-24, 2017.Proposed methodology for earthquake-induced loss assessment of instrumented steel frame buildings: building-specific and city-scale approaches
2017. 6th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Rhodes Island, Greece, June 15-17, 2017.Assessment of the Probability of Collapse of Structures Under Earthquakes
2017. 16th World Conference on Earthquake Engineering (16WCEE), Santiago, Chile, January 9-13, 2017.Seismic Performance of a Special Steel Moment-Resisting Frame Subassembly from the Onset of Damage through Collapse
2017. 16th World Conference on Earthquake Engineering (16WCEE), Santiago, Chile, January 9-13, 2017.Stability Requirements of Deep Steel Wide-Flange Columns under Cyclic Loading
2017. Annual Stability Conference Structural Stability Research Council, San Antonio, Texas, USA, March 22-24, 2017.Full-Scale Cyclic Testing of Deep Slender Wide-Flange Steel Beam-Columns under Unidirectional and Bidirectional Lateral Drift Demands
2017. 16th World Conference on Earthquake Engineering (16WCEE), Santiago, Chile, January 9-13, 2017.Utilization of wavelet-based damage-sensitive features for structural damage assessment of steel braced frames
2017. 4th Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures, Zurich, Switzerland, September 13-15, 2017.Characterization of Cold-Formed Steel Framed/Wood Sheathed Floor and Roof Diaphragm Structures
2017. 16th World Conference on Earthquake Engineering (16WCEE), Santiago, Chile, January 9-13, 2017.Updates to the ASCE-41-13 Provisions for the Nonlinear Modeling of Steel Wide-Flange Columns for Performance-based Earthquake Engineering
2017. Eurosteel, 2017, Copenhagen, Denmark, September 13-15, 2017.Lehrveranstaltungen in Baudynamik und Erdbebeningenieurwesen an der EPFL
2017. D-A-CH Tagung: Erdbebeningenieurwesen und Baudynamik 2017, Weimar, Germany, September 21-22, 2017.Experimental and Numerical Evaluation of Steel Columns for Performance-Based Seismic Assessment of Steel Moment Frames
2017. PESDES 2017 International Workshop on Performance-Based Seismic Design of Structures, Tongji University, Shanghai, China, 13-15 October 2017.Collapse Behavior of Steel Columns as Part of Steel Frame Buildings: Experiments and Numerical Models
2017. 16th World Conference on Earthquake Engineering (16WCEE), Santiago, Chile, January 9-13, 2017.Reports
Residual stress measurements of European hot-rolled I-shaped steel profiles
2017Talks
Experimental and Numerical Evaluation of Steel Columns for Performance-Based Seismic Assessment of Steel Moment Frames
International Workshop on Performance-Based Seismic Design of Structures , Resilience and Robustness, Shanghai, China, October 12-15 2017.Steel Columns under Multi-Axis Cyclic Loading: Experiments, Models and Design Recommendations
9th National Conference on Steel Structures, Larisa, Greece, October 5-7 2017.Student Projects
Seismic Performance Evaluation and Retrofit of Existing School Buildings (CROCS-System) in Switzerland
20172016
Journal Articles
Proposed modeling approach of welding procedures for heavy steel plates
Engineering Structures. 2016. DOI : 10.1016/j.engstruct.2016.08.022.Seismic performance of a steel moment frame subassembly tested from the onset of damage through collapse
Earthquake Engineering & Structural Dynamics. 2016. DOI : 10.1002/eqe.2743.Spectral shape metrics and structural collapse potential
Earthquake Engineering & Structural Dynamics. 2016. DOI : 10.1002/eqe.2739.Assessment of Numerical and Experimental Errors in Hybrid Simulation of Framed Structural Systems through Collapse
Journal of Earthquake Engineering. 2016. DOI : 10.1080/13632469.2015.1110066.Evaluation of Simplified and State-of-the-Art Analysis Procedures for Steel Frame Buildings Equipped with Supplemental Damping Devices Based on E-Defense Full-Scale Shake Table Tests
Journal of Structural Engineering. 2016. DOI : 10.1061/(ASCE)ST.1943-541X.0001474.Conference Papers
Effect of composite beam action on the hysteretic behavior of fully-restrained beam-to-column connections under cyclic loading
2016. 8th International Workshop on Connections in Steel Structures, Boston, Massachusetts, USA, May 24-26, 2016.Comparison of Seismic Design Requirements for Steel Moment Resisting Frames with Emphasis on Stability of Columns in North America, New Zealand, and Europe
2016. 11th Pacific Structural Steel Conference, Shanghai, China, October 26-28, 2016.Guidelines on Nonlinear Dynamic Analysis for Performance-Based Seismic Design of Steel and Concrete Moment Frames
2016. 2016 SEAOC Convention, Maui, Ka'anapali Beach, October 12-15, 2016.Dynamic Stability of Deep and Slender Wide-Flange Steel Columns – Full Scale Experiments
2016. Annual Stability Conference, Structural Stability Research Council, Orlando, Florida, USA, April 12-15, 2016.Experimental Investigation of the Hysteretic Behavior of Wide-Flange Steel Columns under High Axial Load and Lateral Drift Demands
2016. 11th Pacific Structural Steel Conference, Shanghai, China, 29-31, 2016.Loading Histories for Cyclic Tests in Support of Collapse Assessment of Steel Columns
2016. 2nd Huixian International Forum on Earthquake Engineering for Young Researchers, Beijing, China, August 19-21, 2016.Finite element simulation of buckling of extended beam-to-girder shear tab connections under gravity induced shear force
2016. Annual Stability Conference, Structural Stability Research Council, Orlando, Florida, USA, April 12-15, 2016.ATC-114 Next-Generation Hysteretic Relationships for Performance-based Modeling and Analysis
2016. SEAOC Convention, Maui, Hawaii, USA, October 12-15, 2016.Performance of Weld-Retrofit Beam-to-Column Shear Tab Connections
2016. 8th International Workshop on Connections in Steel Structures, Boston, Massachusetts, USA, May 24-26, 2016.Multi-Directional Structural Component Hybrid Testing System for the Assessment of the Seismic Response of Steel I-Shaped Columns
2016. 11th Pacific Structural Steel Conference, Shanghai, China, October 26-28, 2016.2015
Journal Articles
Analytical investigation of the cyclic behavior and plastic hinge formation in deep wide-flange steel beam-columns
BULLETIN OF EARTHQUAKE ENGINEERING. 2015. DOI : 10.1007/s10518-014-9640-y.Application of Simplified Analysis Procedures For Performance-Based Earthquake Evaluation of Steel Special Moment Frames
EARTHQUAKE SPECTRA. 2015. DOI : 10.1193/081413EQS230M.Average spectral acceleration as an intensity measure for collapse risk assessment
Earthquake Engineering & Structural Dynamics. 2015. DOI : 10.1002/eqe.2575.Effect of gravity framing on the overstrength and collapse capacity of steel frame buildings with perimeter special moment frames
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS. 2015. DOI : 10.1002/eqe.2519.Conference Papers
Seismic Design Criteria for Steel Moment Resisting Frames for Collapse Risk Mitigation
2015. 8th International Conference on Behavior of Steel Structures in Seismic Areas, Shanghai, China, July 1-3, 2015.Design Decision Support for Steel Frame Buildings through an Earthquake-Induced Loss Assessment
2015. Improving the Seismic Performance of Existing Buildings and Other Structures, San Francisco, California, USA, December 10-12, 2015. p. 240 - 252. DOI : 10.1061/9780784479728.028.Flexural buckling of extended shear tab connections under gravity induced shear force
2015. Annual Stability Conference Structural Stability Research Council, Nashville, Tennessee, USA, March 24-27, 2015.FULL SCALE TESTING OF EXTENDED BEAM-TO-COLUMN AND BEAMTO- GIRDER SHEAR TAB CONNECTIONS SUBJECTED TO SHEAR
2015. 8th International Conference on Behavior of Steel Structures in Seismic Areas, Shanghai, China, March 24-27, 2015.2014
Journal Articles
Computational Approach for Collapse Assessment of Concentrically Braced Frames in Seismic Regions
Journal of Structural Engineering. 2014. DOI : 10.1061/(ASCE)ST.1943-541X.0001011.Seismic performance of a steel moment-resisting frame subject to strength and ductility uncertainty
Engineering Structures. 2014. DOI : 10.1016/j.engstruct.2014.06.044.Seismic Retrofit of Steel Moment-Resisting Frames with High-Performance Fiber-Reinforced Concrete Infill Panels: Large-Scale Hybrid Simulation Experiments
Journal of Structural Engineering. 2014. DOI : 10.1061/(ASCE)ST.1943-541X.0000877.Modeling of the composite action in fully restrained beam-to-column connections: implications in the seismic design and collapse capacity of steel special moment frames
Earthquake Engineering & Structural Dynamics. 2014. DOI : 10.1002/eqe.2430.2013
Journal Articles
Dynamic Response of a Chevron Concentrically Braced Frame
JOURNAL OF STRUCTURAL ENGINEERING. 2013. DOI : 10.1061/(ASCE)ST.1943-541X.0000679.Drift-based and dual-parameter fragility curves for concentrically braced frames in seismic regions
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH. 2013. DOI : 10.1016/j.jcsr.2013.07.034.Damage to Steel Buildings Observed after the 2011 Tohoku-Oki Earthquake
EARTHQUAKE SPECTRA. 2013. DOI : 10.1193/1.4000124.Estimation of base motion in instrumented steel buildings using output-only system identification
Earthquake Engineering & Structural Dynamics. 2013. DOI : 10.1002/eqe.2359.Collapse Assessment of Steel Moment Frames Based on E-Defense Full-Scale Shake Table Collapse Tests
JOURNAL OF STRUCTURAL ENGINEERING-ASCE. 2013. DOI : 10.1061/(ASCE)ST.1943-541X.0000608.Development and Utilization of Structural Component Databases for Performance-Based Earthquake Engineering
Journal of Structural Engineering. 2013. DOI : 10.1061/(ASCE)ST.1943-541X.0000646.2012
Journal Articles
Fragility functions for pre-Northridge welded steel moment-resisting beam-to-column connections
Engineering Structures. 2012. DOI : 10.1016/j.engstruct.2012.07.007.An efficient method for estimating the collapse risk of structures in seismic regions
Earthquake Engineering & Structural Dynamics. 2012. DOI : 10.1002/eqe.2191.Development of fragility functions as a damage classification/prediction method for steel moment-resisting frames using a wavelet-based damage sensitive feature
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS. 2012. DOI : 10.1002/eqe.1151.2011
Journal Articles
Deterioration Modeling of Steel Components in Support of Collapse Prediction of Steel Moment Frames under Earthquake Loading
JOURNAL OF STRUCTURAL ENGINEERING-ASCE. 2011. DOI : 10.1061/(ASCE)ST.1943-541X.0000376.Numerical and experimental evaluation of seismic capacity of high-rise steel buildings subjected to long duration earthquakes
COMPUTERS & STRUCTURES. 2011. DOI : 10.1016/j.compstruc.2011.01.017.Prediction and validation of sidesway collapse of two scale models of a 4-story steel moment frame
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS. 2011. DOI : 10.1002/eqe.1061.A simplified method for collapse capacity assessment of moment-resisting frame and shear wall structural systems
ENGINEERING STRUCTURES. 2011. DOI : 10.1016/j.engstruct.2010.12.028.Use of Wavelet-Based Damage-Sensitive Features for Structural Damage Diagnosis Using Strong Motion Data
Journal of Structural Engineering. 2011. DOI : 10.1061/(ASCE)ST.1943-541X.0000385.2010
Journal Articles
BASIC CONCEPTS AND PERFORMANCE MEASURES IN PREDICTION OF COLLAPSE OF BUILDINGS UNDER EARTHQUAKE GROUND MOTIONS
STRUCTURAL DESIGN OF TALL AND SPECIAL BUILDINGS. 2010. DOI : 10.1002/tal.546.Fragility Assessment of Reduced Beam Section Moment Connections
JOURNAL OF STRUCTURAL ENGINEERING-ASCE. 2010. DOI : 10.1061/(ASCE)ST.1943-541X.0000214.Research
Research
My work integrates simulation-based engineering science and the use of experimental methods for the risk and life-cycle cost quantification of steel and composite-steel concrete structures under multi-hazards. Recent work focuses on the utilisation of innovative materials and protective systems for multi-hazard risk mitigation, and the development of multi-scale model techniques along with open access tools for elucidating the influence of deteriorating mechanisms on the structural performance of structures with emphasis on seismic loading. Check periodically our resslabtools.epfl.ch website for recent developments on database and integrated numerical models.Teaching & PhD
Teaching
Civil Engineering
PhD Students
Gu Tianyu, Ozden Selimcan, Wen Ce,Past EPFL PhD Students
El Jisr Hammad , Hartloper Alexander Riley , Heredia Rosa Diego Isidoro , Inamasu Hiroyuki , Paronesso Martina , Skiadopoulos Andronikos ,Courses
Structural stability
Advanced topics in structural stability; elastic & inelastic column buckling; lateral-torsional buckling of bridge/plate girders; nonlinear geometric effects; frame stability; computational formulation of stability theory; Geometric stiffness
method; Plate buckling; Plastic collapse analysis
Nonlinear analysis of structures
The course is based on assignments in which students either implement the nonlinear analysis from scratch (for models with truss elements) or use an open-source software (for models with beam elements). The topics that are covered are the following:
- Truss models: Hand calculations and finite element calculations of truss models with material and geometric nonlinearity;
- No
Dynamics of structures
Dynamics loads on structures, equations of motion of linear single- and multiple-degree-of freedom systems; free an forced vibrations; damping in structures: modal superposition and response history analysis, earthquake effects
Performance-based earthquake engineering
Quantitative decision making based on life-cycle considerations that incorporate direct losses, seismic risk assessment, and collapse. Seismic hazard analysis, response simulation, damage and loss estimation, collapse prediction. Case studies.