Vulnerability Assessment of Highly Skewed Bridges Under Seismic Excitations
This study focuses on the vulnerability assessment of highly skewed reinforced concrete bridges under seismic excitations. A detailed approach to generate the finite-element models of skewed bridges is proposed. The case study bridges are chosen to represent typical bridges located in California where seismic activity is a major concern. One- and two-column bent bridges are studied to determine the effects of skew angle, bent geometry, and abutment configuration on the expected structural response. Each bridge model is subjected to a set of ground motions that represent three seismic hazard levels. Nonlinear time history analyses are conducted to determine the maximum displacements and forces at various bridge components. Appropriate damage states are then identified to develop seismic fragility curves. The outcome of this research provides further knowledge on the damageability of skewed bridges and can be directly used for both design and assessment purposes.
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Supplemental Notes:
- This paper was sponsored by TRB committee AFF50 Seismic Design and Performance of Bridges.
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Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Boakye, Jessica
- Muench, Eric
- Shafei, Behrouz
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Conference:
- Transportation Research Board 94th Annual Meeting
- Location: Washington DC, United States
- Date: 2015-1-11 to 2015-1-15
- Date: 2015
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: 12p
- Monograph Title: TRB 94th Annual Meeting Compendium of Papers
Subject/Index Terms
- TRT Terms: Bridge abutments; Case studies; Finite element method; Reinforced concrete bridges; Risk assessment; Seismicity; Skewed structures; Structural analysis
- Geographic Terms: California
- Subject Areas: Bridges and other structures; Geotechnology; Highways; I24: Design of Bridges and Retaining Walls; I42: Soil Mechanics;
Filing Info
- Accession Number: 01551260
- Record Type: Publication
- Report/Paper Numbers: 15-1456
- Files: TRIS, TRB, ATRI
- Created Date: Jan 27 2015 11:22AM