alt text 


Welcome to the web site for Dimitrios Lignos’ research group. Our work focuses on the development of performance-based assessment techniques and use of integrated experimental and analytical methods for seismic design and evaluation of structural systems. We currently investigate the collapse margins of conventional and high performance structural systems subjected to extreme earthquake loading. Recent work focuses on the development of rapid earthquake damage assessment techniques of infrastructure facilities, and the effect of welding procedures on heavy build-up members and high strength steel for the seismic and blast design of tall buildings. Of particular interest is the seismic design and evaluation of steel beam-columns, the evaluation of cumulative damage effects on steel beam-to-column connections and the development of simulation models for performance-based evaluation of conventional and high performance steel frame structures.

Recent News
  • 12/12/2013: Dimitrios Lignos and Ahmed Elkady attended the NEES/E-Defense 10th planning meeting organized in Kyoto, Japan. During the meeting Prof. Lignos gave an invited presentation with title “Current Research on the Collapse Assessment of Steel Frame Buildings Subjected to Extreme Earthquakes Beyond the Design Level”.

  • 12/09/2013: Congratulations to Violetta Nikolaidou for completing her M.Eng Thesis with title Finite Element Modeling and Evaluation of Welding Procedures in High STrength (450 MPa: 65 ksi) W-Shape Column Assemblies. Violetta will be working as a full-time PhD student at McGill University.

  • 12/09/2013: Congratulations to Samy Al-Bardaweel for completing his M.Eng Thesis with title Indicators for Sustainable Design of Civil Engineering Systems: Towards Earthquake Resilient Steel Frame Buildings Through Loss Assessment. Samy will be working as a structural engineering consultant in Ottawa.

  • 10/18/2013: Nasser Al-Shawwa and Prof. Dimitrios Lignos developed a new series of web-based interactive tools for Performance-Based Earthquake Engineering.

  • 10/03/2013: Dimitrios Lignos gave an invited presentation during the 5th Annual Quebec Steel Workshop organized by the Canadian Institute of Steel Construction in Laval, Canada, October 3rd, 2013. The title of the presentation was “Current Research on the Design, Evaluation and Fabrication of Steel Structures Subjected to Seismic and Other Loads”.

  • 09/26/2013: Congratulations to Sarven Akcelyan for winning the first award for the best new code development submitted to OpenSees in the past year (PEER Announcement).

  • 08/29/2013: Dimitrios Lignos gave a presentation during the Vienna Congress on Recent Advances in Earthquake Engineering and Structural Dynamics (VEESD2013) organized in Vienna, Austria in August 28-30, 2013. The title of the presentation was “Collapse Assessment of Steel Moment Resisting Frames Designed with Deep Members”.

  • 08/27/2013: Sarven Akcelyan gave a presentation during the OpenSees Days 2013 Workshop at Richmond field station at UC Berkeley. The title of his presentation was “Seismic Analysis and Evaluation of Steel Structures Equipped with Viscous Dampers”.

  • Read more…