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http://dx.doi.org/10.12989/gae.2019.18.6.661

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)
Publication Information
Geomechanics and Engineering / v.18, no.6, 2019 , pp. 661-668 More about this Journal
Abstract
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.
Keywords
earth dams; randomness of ground motion; seismic vulnerability; dynamic reliability; seismic risk;
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Times Cited By KSCI : 4  (Citation Analysis)
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