进水塔结构属于水下建筑物，其地震安全性至关重要。采用大型三维有限元程序ANSYS对水布垭水电站地下厂房进水塔结构进行抗震分析，计算分析了进水塔结构的自振特性，并通过反应谱方法计算了在水平向地震作用下进水塔结构的动力响应，包括动位移、动应力和加速度分布。将动力计算结果与静力计算结果进行叠加，对进水塔结构抗震性能进行评估，结果显示进水塔结构的变形与强度均能满足要求，为工程设计提供了依据。

The seismic analysis on the intake tower in the Shuibuya Hydropower Station was performed with the aid of 3 - D FEM program, i.e., Ansys software. The self - vibration characteristics of the structure can be got，and seismic behaviors including deformation, stress and acceleration distribution of this tower can be calculated. By the superposed results of dynamical and static calculations, the seismic security of the tower can be evaluated so as to supply reliable data for project designers.