Evaluation of Seismic Fragility Curve of Structure Consisting of Plural Members using Monte Carlo Simulation

Abstract

The seismic fragility curve (SFC) used for probabilistic seismic risk assessment adopts a theoretical probability distribution function in many previous studies. However, focusing on plural members consisting of the structure, it is possible that the members contributing to the damage change sequentially depending on the seismic intensity, and the shape of the SFC of the structural system is not always characterized as theoretical probability distribution. In this study, the SFC of the member is evaluated with the Monte Carlo simulation, then the SFC of the structural system is obtained as a composition of those SFCs of members, and the random variables of the SFC of structural system are evaluated.