国庆水库沥青混凝土心墙坝三维有限元分析

Three-Dimensional Finite Element Analysis of Asphalt Concrete Core Dam of Guoqing Reservoir

为了优化设计,采用三维有限元的方式对玉树国庆水库沥青混凝土心墙坝进行分析。基于各种配合比下沥青混凝土性能试验研究,通过对水库正常运行期工况进行模拟,研究推荐配合比下心墙参数对坝体以及心墙运行状态的影响。结果表明:防渗心墙尺寸设计合理,坝体及分区合适;推荐心墙配合比参数满足大坝运行条件;坝体和心墙间存在一定程度的“拱效应”。

In order to optimize the design,a three-dimensional finite element method is used to analyze the asphalt concrete core dam of the Guoqing Reservoir in Yushu,Qinghai.Based on the experimental research of asphalt concrete performance under various mix ratios,the influence of core wall parameters under recommended mix ratios on the operation of dam body and core wall is studied by simulating the working conditions of the reservoir during normal operation.The results show that the size of the impervious core wall is reasonable,and the dam body and zoning design are appropriate;the recommended mix ratio of core wall concrete meet the requirement of dam operating conditions;certain"arch effect"exists between the dam body and the core wall.