Evaluation and Development of Seismic Fragility Models for Cut-and-cover Underground Station

초록

In this paper, the process of developing seismic fragility functions using a numerical model of previously developed underground structures is explained. The numerical model presented in previous studies was developed for a total of 33 cases, considering input motion using Korea's standard design spectra and applying the model based on the depth of the ground and soil classification. The development procedure of the fragility function in the developed model is presented and categorized by damage index and damage state; these results are used to establish the fragility function. Subsequently, the developed fragility function was compared with seismic fragility functions from previous studies. Through this comparison, an evaluation of the adequacy of the fragility function was conducted. © 2024 The Korean Society for Railway. All rights reserved.

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