MIDAS Expert Webinar: Fragility Assessment of Multi-Span Precast Concrete Girder Bridge

Engineers! Watch this Webinar to learn about the significant seismic risks facing aging bridges in the Pacific Northwest, especially those built before 1990. With the high probability of a MW 9.0 earthquake from the Cascadia Subduction Zone, it's crucial to understand how outdated seismic design standards impact bridge safety.

Key Topics:
Seismic Vulnerability: Effects of outdated design standards on bridge safety, focusing on column displacement ductility.
Shear Failure Risk: Assessing the risk of shear failure in bridge columns during long-duration earthquakes using fragility analysis.
Risk-Targeted Approach: Introduction to the 2023 AASHTO Guide Specifications for LRFD Seismic Bridge Design, emphasizing a probabilistic approach to ground motion hazards.
Case Study: Evaluation of an existing multi-span precast concrete girder (MSPCG) bridge designed before 1990 using modern risk-targeted methodologies.