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http://dx.doi.org/10.5000/EESK.2004.8.1.067

Evaluation of Capacity Spectrum Methods for Seismic Fragility Analysis of Bridges  

Kim, Sang-Hoon ((주)대우건설 토목기술팀)
Yi, Jin-Hak (한국과학기술원 스마트 사회기반시설 연구센터)
Kim, Ho-Kyung (국립목포대학교)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.8, no.1, 2004 , pp. 67-76 More about this Journal
Abstract
This study presents the evaluation of CSM(Capacity Spectrum Method, ATC-40) in developing fragility curves for a sample concrete bridge. The CSM is originally developed as one of the simplified procedures for building structures, while this study adopts the CSM to develop fragility curves of bridge structures. Four(4) different approaches are demonstrated and the fragility curves developed are compared those by the nonlinear time history analysis. Fragility curves in this study are represented by lognormal distribution functions with two parameters and developed as a function of PGA. The sixty(60) ground acceleration time histories for the Los Angeles area developed for the Federal Emergency Management Agency (FEMA) SAC(SEAOC-ATC-CUREe) steel project are used for the bridge analysis. The comparison of fragility curves by the CSM with those by the time history analysis indicates that the agreement is excellent for one of the methods investigated in this study. In this respect. it is recommended that the demand spectrum might be improved according to the guidelines suggested in this study. However, this observation might not always apply, depending on the details of specific bridge characteristic
Keywords
nonlinear static procedure; capacity spectrum method; fragility curve; ductility; pushover analysis; nonlinear time history analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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