丹江口水利枢纽右岸土石坝抗震安全复核研究  

Research on anti-seismic review of earth-rock dam on the right bankof Danjiangkou Water Control Project

作　　者：周荣 梅润雨 魏匡民[3] ZHOU Rong;MEI Runyu;WEI Kuangmin(South to North Water Transfer Middle Route Water Source Co.,Ltd.,Danjiangkou 442700,China;Changjiang Survey,Planning,Design and Research Co.,Ltd.,Wuhan 430014,China;Geotechnical Engineering Research Institute,Nanjing Institute of Water Resources Science,Nanjing 210024,China)

机构地区：[1]南水北调中线水源有限责任公司,湖北丹江口442700 [2]长江勘测规划设计研究有限责任公司,湖北武汉430014 [3]南京水利科学研究院岩土工程研究所,江苏南京210024

出　　处：《水利水电快报》2023年第10期41-48,共8页Express Water Resources & Hydropower Information

摘　　要：针对丹江口水利枢纽右岸土石坝的抗震安全问题,依据GB 18306-2015《中国地震动参数区划图》对右岸土石坝抗震安全进行复核。通过构建精细化的三维有限元模型,参考同类工程坝料动力试验成果拟定计算参数,分析研究了大坝在正常蓄水期遭遇地震工况下大坝的加速度分布、动位移、地震永久变形等性状和坝坡稳定性,重点分析防渗体心墙安全性以及土石坝与混凝土坝接头部位的变形协调性。结果表明:右岸土石坝抗震安全性能良好,满足相关规范要求。In view of the anti-seismic safety of the embankment dam on the right bank of Danjiangkou Water Control Project,the anti-seismic safety of embankment dam was reviewed according to the Seismic Ground Motion Parameter Zonation Map of China(GB 18306-2015).By constructing a refined three-dimensional finite element model,and referring to the dynamic test results of dam materials of similar projects,the calculation parameters were proposed,and the acceleration distribution,dynamic displacement,seismic permanent deformation and other characteristics of the dam and the stability of the dam slope under the seismic condition during the normal impoundment period were analyzed and studied.The safety of the impervious core wall and the deformation coordination of the joint between the embankment dam and the concrete dam were emphatically analyzed.The results showed that the anti-seismic safety performance of the embankment dam on the right bank was good and met the requirements of relevant specifications.

关 键 词：丹江口大坝加高工程 土石坝 抗震复核 混合坝 有限元 

分 类 号：TV641.1[水利工程—水利水电工程]