人民珠江2025，Vol.46Issue(3)：32-38,7.DOI:10.3969/j.issn.1001-9235.2025.03.005
基于性能指标综合的重力坝抗震安全评价模型研究
Study on Seismic Safety Evaluation Models for Gravity Dams Based on Integrated Performance Indicators
摘要
Abstract
Existing studies typically explore the differences in seismic performance evaluation results of different evaluation models for concrete gravity dams by analyzing amplitude factors while neglecting the influence of ground motion duration.As a result,the influence of different evaluation models on the seismic performance of gravity dams can not be evaluated comprehensively.This paper,using the efficacy coefficient method,integrated the overall damage index of the dam body and the relative displacement of the dam crest to construct a comprehensive seismic damage evaluation model for gravity dams.Taking the Koyna gravity dam as the research subject,this paper examined the influence of ground motions with different strong seismic motion durations on the seismic damage degree of the dam body under both single-indicator and multi-indicator evaluation models,and the analysis results of different evaluation models on the seismic performance of gravity dams were compared.The result indicates that ground motion duration is positively correlated with the damage degree of gravity dams,and relying on a single evaluation indicator may lead to conservative or dangerous evaluations of the damage degree of dam bodies.A comprehensive evaluation model can more accurately reflect the influence of variations in strong seismic motion duration on the damage degree of concrete gravity dams.关键词
综合评价指标/强震持时/混凝土重力坝/塑性损伤/功效系数法Key words
comprehensive evaluation indicators/strong seismic motion duration/concrete gravity dam/plastic damage/efficacy coefficient method分类
水利科学引用本文复制引用
范文战,朱少坤,陈博..基于性能指标综合的重力坝抗震安全评价模型研究[J].人民珠江,2025,46(3):32-38,7.基金项目
水利部珠江河口动力学及伴生过程调控重点实验室开放研究基金([2017]KJ04) （[2017]KJ04）
