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Effect of Evaluation Response Spectrum on the Seismic Risk of Structure

평가용 스펙트럼이 구조물의 지진리스크에 미치는 영향

  • 김민규 (한국원자력연구원 종합안전평가부) ;
  • 최인길 (한국원자력연구원 종합안전평가부)
  • Published : 2009.12.31

Abstract

The selection of an evaluation response spectrum can have a significant effect on the seismic fragility evaluation of a structure. A method for modifying the seismic fragility parameters that are calculated based on the design spectrum is described in this study. The modification factor is used to modify the original fragility parameters. The HCLPF (High Confidence of Low Probability of Failure) acceleration levels of the electric system using previous design spectrum and uniform hazard spectrum (UHS) were compared. Finally, seismic risk analyses were performed according to a uniform hazard spectrum. From the results, it was concluded that based on the design spectrum, seismic risk for the electric system might be underestimated.

Keywords

Seismic fragility;Evaluation response spectrum;Uniform hazard spectrum;HCLPF (High Confidence of Low Probability of Failure);Seismic risk

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