Geomechanics and Engineering

  • 제18권6호
  • /
  • Pages.661-668
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  • 2019
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

A dynamic reliability approach to seismic vulnerability analysis of earth dams

  • Hu, Hongqiang (Department of Geotechnical Engineering, College of Civil Engineering, Tongji University) ;
  • Huang, Yu (Department of Geotechnical Engineering, College of Civil Engineering, Tongji University)
  • 투고 : 2019.06.17
  • 심사 : 2019.08.26
  • 발행 : 2019.08.30
⟨ 이전 논문 다음 논문 ⟩

초록

Seismic vulnerability assessment is a useful tool for rational safety analysis and planning of large and complex structural systems; it can deal with the effects of uncertainties on the performance of significant structural systems. In this study, an efficient dynamic reliability approach, probability density evolution methodology (PDEM), is proposed for seismic vulnerability analysis of earth dams. The PDEM provides the failure probability of different limit states for various levels of ground motion intensity as well as the mean value, standard deviation and probability density function of the performance metric of the earth dam. Combining the seismic reliability with three different performance levels related to the displacement of the earth dam, the seismic fragility curves are constructed without them being limited to a specific functional form. Furthermore, considering the seismic fragility analysis is a significant procedure in the seismic probabilistic risk assessment of structures, the seismic vulnerability results obtained by the dynamic reliability approach are combined with the results of probabilistic seismic hazard and seismic loss analysis to present and address the PDEM-based seismic probabilistic risk assessment framework by a simulated case study of an earth dam.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

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