Enabling Accelerated Construction of Bridges in California with Seismic Requirements


Event details

Date 10.10.2013 12:1513:15  
Speaker Prof. Sri Sritharan
GC B331
Category Conferences - Seminars
The presentation will focus on an integral bridge pier system consisting of concrete columns, precast concrete girders, and concrete cap beams that is being investigated to facilitate accelerated bridge construction (ABC) in seismic regions of California. Despite their advantages, bridges with precast components are not currently favored due to their design approaches resulting in costly solutions and an expectation that these bridges will produce poor seismic performance. Using a combination of large-scale tests and analytical investigations, the seismic behavior of both the connections between the precast girders and cap beams as well as the overall bridge systems are studied. It will be demonstrated during the presentation that the current design specifications adopted by the California Department of Transportation (Caltrans) for this precast girder bridges are unnecessarily conservative, thus making them less cost competitive in comparison to the cast-in-place alternative.  It will be further shown that the outcomes of this research project will not only enable use of precast components in bridges of California, but also make them cost effective while ensuring their dependable seismic performance. 

Short Bio: Dr. Sri Sritharan is the Wilson Engineering Professor of the Department of Civil, Construction and Environmental Engineering at Iowa State University and is currently a visiting professor at the EESD laboratory of EPFL.  Sri’s research expertise includes earthquake-resistant design of structures, precast structural systems, soil-foundation-structure interaction, and ultra-high performance concrete. Sri is an active member of several professional societies and organizations including the American Concrete Institute (ACI), Precast/Prestressed Concrete Institute (PCI) and Transportation Research Board (TRB), and is the current chair of the ACI’s Committee on Earthquake-Resistant Concrete Bridges.

Practical information

  • General public
  • Free


  • Prof. Nikolas Geroliminis & Prof. Katrin Beyer


  • Prof. Katrin Beyer