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http://dx.doi.org/10.12989/sem.2018.66.1.075

Reliability-based fragility analysis of nonlinear structures under the actions of random earthquake loads  

Salimi, Mohammad-Rashid (Department of Civil Engineering, University of Kurdistan)
Yazdani, Azad (Department of Civil Engineering, University of Kurdistan)
Publication Information
Structural Engineering and Mechanics / v.66, no.1, 2018 , pp. 75-84 More about this Journal
Abstract
This study presents the reliability-based analysis of nonlinear structures using the analytical fragility curves excited by random earthquake loads. The stochastic method of ground motion simulation is combined with the random vibration theory to compute structural failure probability. The formulation of structural failure probability using random vibration theory, based on only the frequency information of the excitation, provides an important basis for structural analysis in places where there is a lack of sufficient recorded ground motions. The importance of frequency content of ground motions on probability of structural failure is studied for different levels of the nonlinear behavior of structures. The set of simulated ground motion for this study is based on the results of probabilistic seismic hazard analysis. It is demonstrated that the scenario events identified by the seismic risk differ from those obtained by the disaggregation of seismic hazard. The validity of the presented procedure is evaluated by Monte-Carlo simulation.
Keywords
reliability; fragility curve; tail-equivalent linearization; failure probability; random vibration; point-source;
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Times Cited By KSCI : 5  (Citation Analysis)
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