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  • Writer's pictureRaj Singh

Performance-Based Seismic Design of Bridges Series at the BC MoTI - Part 2

BC Ministry of Transportation and Infrastructure's bridge engineering staff attentively listing to the presentation.

On February 22, 2024, the Spannovation Group held the second session of its three-part series on seismic design for bridge structures at the Ministry’s Coquitlam office. This session focused on performance-based seismic design as per CSA-S6-19 and the Ministry Supplement.

The first session in December 2023 introduced the necessary framework and requirements for performance-based seismic design of bridges, which is crucial for creating seismically resilient bridges. Today's talk described the basics of non-linear analysis and seismic performance demonstration, delving into key topics such as moment curvature and push-over analysis, as well as non-linear time history analysis.

BC Ministry of Transportation and Infrastructure's bridge engineering staff attentively listing to the presentation from Saqib Khan of Spannovation.

The post-presentation dialogue sparked a discussion on the use of push-over analyses for capacity-protected design and damping modeling in non-linear seismic analyses. Additionally, strategies for analyzing and designing bridges in liquefiable soil conditions were shared, demonstrating the depth of the knowledge exchange.

The Ministry's structural group from Coquitlam attended in person, while members from Vernon, Kamloops, Prince George, and Vancouver Island joined virtually, illustrating the series' significance and relevance. Special thanks were given to the Ministry, particularly Reza Saedi, for facilitating these knowledge-sharing sessions on a topic crucial for the seismic resilience of BC's highway infrastructure. Given BC's vulnerability to seismic activity, this series is crucial for future-proofing its infrastructure.

A lighter moment during the ensuing discussion on various seismic and bridge design topics after the presentation.

The presentation was led by Saqib Khan, P.Eng., Principal Engineer at Spannovation, with contributions from Jhordy Rodriguez, EIT and Sri Kota, EIT, also from Spannovation. Saqib Khan, a leader in bridge and seismic engineering, belongs to the Canadian Bridge Code Sub-Committee for Chapter 4, Seismic Design, and is the lead author of the Engineers and Geoscientists BC (EGBC) guidelines for Performance-Based Seismic Design of Bridges in BC (2018).

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