Fragility Functions for Bridges in Liquefied and Laterally Spreading Ground Scott J. Brandenberg, Jian Zhang, Pirooz Kashighandi, Yili Huo, Minxing Zhao.

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Presentation transcript:

Fragility Functions for Bridges in Liquefied and Laterally Spreading Ground Scott J. Brandenberg, Jian Zhang, Pirooz Kashighandi, Yili Huo, Minxing Zhao October 8 th, 2010

2010 El Mayor Cucapah Earthquake 2/25

3 Berrill et al. (2001) Landing Road Bridge: 1987 Edgecumbe Earthquake

Distribution of Caltrans Bridge Construction Year Data from National Bridge Inventory

Existing Fragility Functions (HAZUS)

Highway Demonstration Project (PEER report) A. Kiremidjian et al. (2006) Transportation Network Analysis

Global Equivalent Static Analysis

Input Parameter Selection

Generation of Demand Fragility Surfaces

Sample Fragility Surfaces

3-D Global Dynamic Analyses

3-D Analysis Examples

3-D Analysis Results

ACKNOWLEDGEMENTS  Co-PI Jian Zhang  PhD Students: Pirooz Kashighandi, Minxing Zhao, and Yili Huo.  Technical Coordinator: Tom Shantz  Funding for this work was provided by the Pacific Earthquake Engineering Research Center.

Site Response Analysis