地震情况下地基、库水、拱坝的相互作用

Interaction among Ground Base,Impounded Water and Arch Dam under Seismic Loading

采用边界元（用于地基和库水）与有限元（用于坝体）耦合和子结构法对相互作用的地基、库水、拱坝系统进行了较全面的三维地震动力分析，着重探讨了地基的变形特性（包括刚度变化）。

Some three dimensional numerical dynamic analyses for a ground base reservoir water arch dam system under seismic interaction have been solved by coupling boundary element method(for ground base and reservoir water)and finite element method (for dam body) as well as using substructure apporach.The influences of the compliance of the bedrock,the compressibility of the impounded water,the wave types and the incident directions on the response of the dam are particularly discussed.