Abstract
This paper presents a system reliability based analysis method for evaluating the seismic safety/reliability of structures. The seismic analysis procedure developed represents a practical approach in quantifying the risk of structural failure due to seismic hazard. The procedure developed is for framed structures consisting of discrete-state elements. The probabilistic modeling of the seismic load utilizes the hazard curve of the region and the dynamic amplification factor spectrum matching the local geologic condition. The loadings in the structural components are obtained based on a quasi-dynamic analysis and the identification and computation of the component and system failure probabilities are implemented in the software package FAILSF. For illustrative purposes, an elevated liquid storage vessel was used for the application of the seismic analysis procedure.
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