Seismic response prediction and modeling considerations for curved and skewed concrete box-girder bridges

Karthik Ramanathan, Jong-Su Jeon, Behzad Zakeri, Reginald DesRoches and Jamie E. Padgett

Abstract

This paper focuses on presenting modeling considerations and insight into the performance of typical straight, curved, and skewed box-girder bridges in California which form the bulk of the bridge inventory in the state. Three case study bridges are chosen: Meloland Road Overpass, Northwest Connector of Interstate 10/215 Interchange, and Painter Street Overpass, having straight, curved, and skewed superstructures, respectively. The efficacy of nonlinear dynamic analysis is established by comparing the response from analytical models to the recorded strong motion data. Finally insights are provided on the component behavioral characteristics and shift in vulnerability for each of the bridge types considered.

Key Words

straight, curved, skewed box-girder bridge; numerical model; model validation; component behavior; fragility

Address

Karthik Ramanathan: AIR Worldwide, 131 Dartmouth Street, Boston, MA 02116, USA Jong-Su Jeon, Reginald DesRoches: Civil and Environmental Engineering, Georgia Institute of Technology, 790 Atlantic Drive, GA 30332, USA Behzad Zakeri: Civil and Environmental Engineering, University of California, Irvine, CA 92697, USA Jamie E. Padgett: Civil and Environmental Engineering, Rice University, 6100 Main Street, Houston, TX 77005, USA

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