A comparative study of construction methods for seismic fragility curves using numerical simulations

Le, Thien-Phu; Dang, Cong-Thuat; Ray, Priyadip

doi:10.1051/meca/2015119

Cited by 4 publications

(1 citation statement)

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“…This paper focuses on the ways of constructing seismic fragility curves using numerical simulations, where there are three popular methods (i) scaled seismic intensity (SSI) [3,9,10], (ii) maximum likelihood estimation (MLE) [11][12][13] and (iii) probabilistic seismic demand model/probabilistic seismic capacity model (PSDM/PSCM) [4,14]. A comparative study on these methods can be found in reference [15]. It should be noted that most of existing methods are based on the common assumption of log-normal shape of the curves…”

Section: Introductionmentioning

confidence: 99%

Seismic fragility curves based on the probability density evolution method

Dang

Ray

2017

Vietnam J. Mech.

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A seismic fragility curve that shows the probability of failure of a structure in function of a seismic intensity, for example peak ground acceleration (PGA), is a powerful tool for the evaluation of the seismic vulnerability of the structures in nuclear engineering and civil engineering. The common assumption of existing approaches is that the fragility curve is a cumulative probability log-normal function. In this paper, we propose a new technique for construction of seismic fragility curves by numerical simulation using the Probability Density Evolution Method (PDEM). From the joint probability density function between structural response and random variables of a system and/or excitations, seismic fragility curves can be derived without the log-normal assumption. The validation of the proposed technique is performed on two numerical examples.

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