Sharif University of Technology Scientia Iranica 1026-3098 24 3 2017 06 01 Probabilistic seismic hazard analysis using reliability methods 933 941 4077 10.24200/sci.2017.4077 EN M. Kia Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran, P.O. Box 15875-4413, Iran M. Banazadeh Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran, P.O. Box 15875-4413, Iran Journal Article 2015 07 02 By considering uncertainties in the input parameters (e.g., magnitude, location, wave path, etc.), the Probabilistic Seismic Hazard Analysis (PSHA) aims to compute annual rate of various exceeding ground motions at a site or a map of sites of all anticipated given earthquakes. Uncertainties may be originated due to inherent randomness of the phenomena or variability in the mean values of di erent models parameters, mainly due to use of nite-sample size of observations. The rst, in literature reviews, is commonly named aleatory uncertainty; the second is known as epistemic uncertainty. The total probability numerical integration, generally employed to calculate PSHA, only considers aleatory uncertainties, and variability in the models' parameters is neglected to simplify calculation. In this paper, as an alternative to the total probability numerical integration, matured and standard reliability methods tailored to e ortlessly consider both types of<br />uncertainties are put forward to compute site-speci c PSHA. Then, as an application study, the peak ground acceleration hazard curve for the site, at which a historical bridge is located, is developed and compared with those obtained from the total probability numerical integration. Probabilistic seismic hazard analysis Reliability methods Probabilistic model Epistemic and aleatory uncertainties Limit-state function https://scientiairanica.sharif.edu/article_4077_2f53979d36024454e031cafbdf49080a.pdf