[1]贺路翔,陈灯红,杨紫辉,等.基于IDA的重力坝三维系统抗震性能研究[J].自然灾害学报,2019,28(04):159-168.[doi:10.13577/j.jnd.2019.0417]
 HE Luxiang,CHEN Denghong,YANG Zihui,et al.Study on seismic performance of three dimensional concrete gravity dam system based on IDA[J].,2019,28(04):159-168.[doi:10.13577/j.jnd.2019.0417]
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基于IDA的重力坝三维系统抗震性能研究
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
28
期数:
2019年04期
页码:
159-168
栏目:
出版日期:
2019-08-28

文章信息/Info

Title:
Study on seismic performance of three dimensional concrete gravity dam system based on IDA
作者:
贺路翔 陈灯红 杨紫辉 杨乃鑫 孙豹
三峡大学 土木与建筑学院, 湖北 宜昌 443002
Author(s):
HE Luxiang CHEN Denghong YANG Zihui YANG Naixin SUN Bao
College of Civil Engineering and Architecture, China Three Gorges University, Yichang 443002, China
关键词:
混凝土重力坝三维模型增量动力分析地震易损性
Keywords:
concrete gravity damthree-dimensional modelIncremental Dynamic Analysis (IDA)seismic vulnerability
分类号:
TU391;X43;X9
DOI:
10.13577/j.jnd.2019.0417
摘要:
为了研究在地震作用下混凝土重力坝的整体抗震性能,以我国西南地区200 m级的光照混凝土重力坝为例,建立了整体大坝的坝体-库水-地基系统三维有限元模型,基于增量动力分析法对该模型进行了地震响应分析及地震易损性分析。根据整体大坝模型的增量动力分析计算结果,分别提取了坝顶和底孔的位移进行IDA曲线、分位曲线以及地震易损性曲线的绘制。结果表明地震波的PGA在0.2 g以下时,坝体出现破坏的概率很低;PGA为0.3 g以下时,可满足坝体基本功能保障;PGA在0.6 g以下时,能满足坝体基本安全保证。
Abstract:
In order to study the seismic performance of concrete gravity dam under earthquake loads, the Guangzhao concrete gravity dam with 200 meters height in southwest China is taken as an example. The three-dimensional finite element model of the dam-reservoir water-foundation system is established. Dynamic analysis and seismic vulnerability analysis are carried out based on the incremental dynamic analysis (IDA) method. According to the IDA results of the whole dam model, the displacements of the dam crest and the bottom hole are extracted. The IDA curves, the fractile curves and the seismic vulnerability curves are obtained. It is concluded that when the PGA of the seismic wave is below 0.2g, the probability of damage to the dam is very low; when the PGA is 0.3g or less, the basic function guarantee of the dam can be satisfied; when the PGA is below 0.6g, the basic safety requirement of the dam can be met.

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备注/Memo

备注/Memo:
收稿日期:2018-11-17;改回日期:2019-01-03。
基金项目:国家自然科学基金项目(51309143);湖北省自然科学基金项目(2018CFB652);流域水循环模拟与调控国家重点实验室开放研究基金(IWHR-SKL-201716)
作者简介:贺路翔(1994-),男,硕士研究生,主要从事混凝土结构抗震性能研究.E-mail:892956545@qq.com
通讯作者:陈灯红(1983-),男,副教授,主要从事混凝土结构抗震性能研究.E-mail:d.chen@ctgu.edu.cn
更新日期/Last Update: 1900-01-01