MCE地震作用下全坝段三维碾压混凝土重力坝动位移分析  

Analysis of Dynamic Displacement of Whole Dam Section of Three-dimensional RCC Gravity Dam Under MCE Earthquake

作　　者：胡良明[1] 李天晓[1] 杨旭 赵子楠 林政 张坤坤 HU Liang-ming;LI Tian-xiao;YANG Xu;ZHAO Zi-nan;LIN Zheng;ZHANG Kun-kun(School of Water Conservancy Engineering,Zhengzhou Universuty,Zhengzhou 450001,China;Monitoring and Maintenance Branch of the Yellow River Water Conservancy and Hydropower Development Group Limited,Jiyuan 459017,China)

机构地区：[1]郑州大学水利科学与工程学院,河南郑州450001 [2]黄河水利水电开发集团有限公司监测维修分公司,河南济源459017

出　　处：《水电能源科学》2022年第3期105-108,117,共5页Water Resources and Power

摘　　要：碾压混凝土重力坝切割式横缝接触面存在一定初始强度,忽略该强度与坝体实际运行状态差异较大。对此,基于ABAQUS有限元分析软件,考虑各相邻坝段间的相互作用力和切割式横缝接触面初始强度,对全坝段三维光照碾压混凝土重力坝—地基—库水体系进行有限元数值模拟,分析了碾压混凝土重力坝在最大可信地震作用下的动位移响应。结果表明,忽略碾压混凝土重力坝切割式横缝接触面初始强度会降低坝体动位移响应程度,且三维数值模型相对于二维更能反映重力坝各相邻坝段间相互作用行为,对高碾压混凝土坝非线性动力响应理论研究有一定参考价值。There is a certain initial strength in the contact surface of the cut-type transverse joint of a RCC gravity dam, and ignoring this strength is quite different from the actual operating state of the dam. Based on the finite element analysis software ABAQUS, this paper considered the interaction force between adjacent dam sections and the initial strength of the cut transverse joints, and carried out the finite element numerical simulation of the whole dam section of the three-dimensional light RCC gravity dam-foundation-reservoir system. The dynamic displacement response of RCC gravity dam under the most credible earthquake was analyzed. The results show that ignoring the initial strength of the cut transverse joint contact surface of a RCC gravity dam will reduce the dynamic displacement response of the dam body, and the three-dimensional numerical model can better reflect the interaction behavior between adjacent dam sections of the gravity dam compared with the two-dimensional model, which has certain reference value for theoretical research on the nonlinear dynamic response of high roller compacted concrete dams.

关 键 词：光照水电站 碾压混凝土重力坝 切割式横缝 动位移响应 最大可信地震MCE 

分 类 号：TV642.3[水利工程—水利水电工程]