淤沙在坝——库水——地基系统动力时程响应中的影响研究

英文篇名：Sedimentary Influence on Seismic Time-history Response of Dam-water-foundation System
中文刊名：水利科技与经济
英文刊名：Water Conservancy Science and Technology and Economy
作者：冯利
英文作者：FENG Li(Yunnan Geology Engineering NO.2 Survey Institute ; Kunming 650051 ; China)
中文关键词：淤沙 ; 坝——库水——地基系统 ; Arbitrary-Largrangian-Eulerian方法 ; 动水压力
英文关键词：sediment ; dam-water-foundation ; arbitrary-lagrangian-eulerian method ; dynamic water pressure
出版日期：2009-10-30
机构：云南地质工程第二勘察院;
年：2009
期：10
出版单位：水利科技与经济

摘要

采用Arbitrary-Largrangian-Eulerian有限单元方法模拟坝——库水——地基系统,库水作为粘性微可压缩流体、淤沙作为饱和液体-固体两相介质处理。首先针对淤沙厚度为零情形时动水压力值与Westergaard解进行对比,其次对物理实验模型进行数值模拟并进行结果对比验证,表明此方法有较好精度。最后以阿海重力坝为例,探讨了不同厚度淤沙对于坝面动水压力、坝体位移响应等的影响情况。
Arbitrary-Lagrangian-Eulerian finite element method is applied to simulate dam-water-foundation system with water as slightly compressible vicinal fluid and sediment as fluid-solid two-phase material.The comparisons of hydrodynamic pressure between solutions without sediment and that from the Westergaard,and between experimental and numerical solutions both demonstrate that the method used here have high accuracy.Based on Ahai gravity dam,the results of dynamic pressure and dam displacement response varying with sediment thickness are reported.

引文

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