, C.T.C.T.DangLe, T.P.T.P.LeLMEE - Laboratoire de Mécanique et d'Energétique d'Evry - UEVE - Université d'Évry-Val-d'EssonneRay, P.P.RaySeismic fragility curves based on the probability density evolution methodHAL CCSD2017Seismic fragility curveProbability density evolution methodlog normal probability lawreliabilityfailure[PHYS.MECA] Physics [physics]/Mechanics [physics]HAL, Univ Évry2019-12-06 22:28:312021-11-03 05:42:312019-12-06 22:28:31enJournal articles10.15625/0866-7136/102081A 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.