华南地震2016，Vol.36Issue(4)：34-41,8.DOI:10.13512/j.hndz.2016.04.006
新丰江水库大坝强震动监测及其动力特性分析
Analysis on Strong Motion Monitoring Data and Dynamic Characteristics of Xinfengjiang Reservoir Dam
摘要
Abstract
Xinfengjiang reservoir dam is the first dam which has withstood the test of an earthquake of magnitude 6 in the world.Nowadays earthquakes still occur frequently in the reservoir area.Therefore,it is necessary to carry out a seismic analysis for the purpose to estimate the safety level of the dam.Firstly,the data of dam strong motion array are used to conduct modal analysis.Then combined with modal analysis results,the finite element analysis software,i.e.ANSYS,is used to carry out statical and dynamical analysis of the typical diversion section to explore the deformation and stress distribution rules of the dam.The results show that dam modal frequency is inverse proportion with water level.Under earthquake action,the maximum tensile stress occurs the dam upstream surface's mutation.The phenomenon is consistent to that of the penetrating crack on the retaining dam upstream surfacers mutation.This should cause a certain value.Other parts have a certain safety stock under static and earthquake action.Dynamic time history analysis result is safer than the response spectrum analysis results.关键词
新丰江水库大坝/强震动监测/ANSYS/静力分析/反应谱分析/动力时程分析Key words
Xinfengjiang reservoir dam/Strong motion monitoring/ANSYS/Statical analysis/Response spectrum analysis/Dynamic and time-historical analysis分类
天文与地球科学引用本文复制引用
宋晓春,姜慧,王立新,严琨,朱敏..新丰江水库大坝强震动监测及其动力特性分析[J].华南地震,2016,36(4):34-41,8.基金项目
中央高校基本科研业务费(ZY20150312) （ZY20150312）
中国地震局地震监测与减灾技术重点实验室、广东省地震预警与重大工程安全诊断重点实验室建设项目(2011A060901006) （2011A060901006）
广东省重大科技专项项目(2012A 080102008) （2012A 080102008）
