Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Dynamic Response based Reliability Analysis of Structure with Passive Damper - Part 1: Assessment of Member Failure Probability

수동형 댐퍼를 장착한 구조물의 동적응답기반 신뢰성 해석 - 제1편: 부재별 파괴확률 산정

  • Kim, Seung-Min (Department of Civil, Safety and Environmental Engineering, Hankyong National University) ;
  • Ok, Seung-Yong (Department of Civil, Safety and Environmental Engineering, Hankyong National University)
  • 김승민 (한경대학교 토목안전환경공학과) ;
  • 옥승용 (한경대학교 토목안전환경공학과)
  • Received : 2016.06.30
  • Accepted : 2016.07.27
  • Published : 2016.08.31
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Abstract

This study proposes a dynamic reliability analysis of control system as a method of quantitative evaluation of its performance in probabilistic terms. In this dynamic reliability analysis, the failure event is defined as an event that the dynamic response of the structural system exceeds a displacement limit, whereas the conventional reliability analysis method has limitations that do not properly assess the actual time history response of the structure subjected to dynamic loads, such as earthquakes and high winds, by taking the static response into account in the failure event. In this first paper, we discuss the control effect of the viscous damper on the seismic performance of the member-level failure where the failure event of the structural member consists of the union set of time-sequential member failures during the earthquake excitations and the failure probability of the earthquake-excited structural member is computed using system reliability approach to consider the statistical dependence of member failures between the subsequent time points. Numerical results demonstrate that the proposed approach can present a reliable assessment of the control performance of the viscous damper system in comparison with MCS method. The most important advantage of the proposed approach can provide us more accurate estimate of failure probability of the structural control system by using the actual time-history responses obtained by dynamic response analysis.

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References

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