Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Seismic Fragility Analysis of a Bridge System Considering the Correlation of Components of the PSC Bridge

PSC교량의 부재별 상관관계를 고려한 시스템 지진취약도 분석

  • An, Hyojoon (Department of Civil Engineering, Inha University) ;
  • Shin, Soobong (Department of Civil Engineering, Inha University) ;
  • Lee, Jong-Han (Department of Civil Engineering, Inha University)
  • 안효준 (인하대학교 토목공학과) ;
  • 신수봉 (인하대학교 토목공학과) ;
  • 이종한 (인하대학교 토목공학과)
  • Received : 2021.08.19
  • Accepted : 2021.10.08
  • Published : 2021.11.01
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Abstract

Seismic fragility analysis of a structure is generally performed for the expected critical component of a structure. The seismic fragility analysis assumes that all the components behave independently in a structural system. A bridge system consists of many inter-connected components. Thus, for an accurate evaluation of the seismic fragility of a bridge, the seismic fragility analysis requires the composition of probabilities considering the correlation between structural components. This study presented a procedure to obtain the seismic fragility curve of a bridge system, considering the correlation between bridge components. Seismic fragility analysis was performed on a PSC bridge that is considered as the central infrastructure. The analysis results showed that the probability of the seismic fragility curve of the bridge system was higher than that of each bridge component.

Keywords

Acknowledgement

본 연구는 국토교통부 건설기술연구사업의 연구비지원(21SCIP-B146946-04)에 의해 수행되었습니다.

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