Journal of the Korea institute for structural maintenance and inspection (한국구조물진단유지관리공학회 논문집)

Korea Institute for Structural Maintenance Inspection (한국구조물진단유지관리공학회)
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Empirical Fragility Curves for Bridge

교량의 경험적 손상도 곡선

  • 이종헌 (경일대학교 토목공학과) ;
  • 김운학 (한경대학교 토목공학과) ;
  • 최정호 (유니슨산업(주), 한경대학교 토목공학과)
  • Received : 2001.10.05
  • Published : 2002.01.31
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Abstract

This paper presents a statistical analysis of empirical fragility curves for bridge. The empirical fragility curves are developed utilizing bridge damage data obtained from the 1995 Hyogoken Nanbu(Kobe) earthquake. Two-parameter lognormal distribution functions are used to represent the fragility curves with the parameters estimated by the maximum likelihood method. This paper also presents methods of testing the goodness of fit of the fragility curves and estimating the confidence intervals of the two parameters(median and log-standard deviation) of the distribution. An analytical interpretation of randomness and uncertainty associated with the median is provided.

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