Seismic fragility assessment of concrete gravity dams under near source synthetic ground motions

被引：3

作者：

Gorai, Soumya ^{[1
]}

Maity, Damodar ^{[2
]}

机构：

[1] ZURU Tech India Pvt Ltd, Kolkata, India

[2] Indian Inst Technol Kharagpur, Dept Civil Engn, Kharagpur, India

来源：

STRUCTURE AND INFRASTRUCTURE ENGINEERING | 2025年 / 21卷 / 02期

关键词：

Concrete gravity dam; dam-reservoir-foundation system; probabilistic seismic demand model; seismic fragility; stochastic model; synthetic near source earthquakes; NONLINEAR DYNAMIC-RESPONSE; PLASTIC-DAMAGE MODEL; FLING-STEP; PERFORMANCE EVALUATION; FAULT; EARTHQUAKE; DIRECTIVITY; SELECTION;

D O I：

10.1080/15732479.2023.2207168

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This study aims at seismic fragility assessment of concrete gravity dams under synthetic near source ground motions. The numerical modelling of the dam-reservoir-foundation coupled system and the nonlinear time history analysis are carried out in ABAQUS. Two sets of synthetic near source records characterized by forward-directivity and fling-step effects are generated using an empirical stochastic approach. Maximum value of the seismic response quantities of the coupled system are obtained as engineering demand parameters (EDP) and various ground motions parameters are selected as intensity measurement (IM). Fragility functions are generated from the cloud response data (EDP-IM pairs) using a Probabilistic Seismic Demand Model (PSDM).

引用

页码：281 / 301

页数：21

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