The dynamic characteristics of the solids and water-body interaction is focused. Firstly, the weight of the pure solid structure and the frequency domain are researched, followed by combined Westergarrd theoretical methods. ADINA-FSI method is used to complete the full flow structure coupling calculation of the gravity dam. Study explores the dam body stress and water structure affect the vibration frequency at the presence of water. The result shows that; the flow structure coupling model can caused displacement smaller and better reflects the body of water-solid interaction requirements, and thus draw some valuable results for engineering design.%主要探讨了固体与水体相互作用下的动力特性.首先进行纯固体结构的自重以及频域计算,其次结合Westergarrd理论方法,采用ADINA-FSI方法完成重力坝的全流构耦合计算研究.探究了水体的存在下的坝体应力以及水体对结构的自振频率影响.计算结构表明:流构耦合模型计算结果,结构大部分位移较小,更能反映水体-固体相互作用的要求,从而得出一些有价值的成果供工程设计参考.
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