坝肩岩体地震残余变形对小湾拱坝安全度影响  

Effects of seismic residual deformation of abutment rock on safety of Xiaowan arch dam

作　　者：崔玉柱[1] 周元德[1] 张楚汉[1] 金峰[1] 

机构地区：[1]清华大学水利水电工程系,北京100084

出　　处：《水利水运工程学报》2001年第3期13-17,共5页Hydro-Science and Engineering

摘　　要：用有限元模拟拱坝坝体、非连续接触单元模拟坝肩 ,计算了在设计地震荷载作用下小湾拱坝坝肩残余位移和坝体应力 .以拉应力达到坝体混凝土抗拉强度为控制标准 ,得出坝肩岩体的动力稳定安全系数 .计算结果表明 。By use of finite elements to model the dam body and of discontinuous contact elements to model the abutment, the abutment residual deformation and dam stress of Xiaowan arch dam under the design seismic load are calculated. The dynamic safety factor of the abutment rock is obtained with the critical condition of tensile stress reaching the tensile strength of the dam concrete. Calculation results show that the abutment of Xiaowan arch dam is safe.

关 键 词：坝肩 地震残余位移 有限元 应力 安全系数 小湾拱坝 

分 类 号：TV642.4[水利工程—水利水电工程]