In order to perform seismic design accurately and conveniently in engineering applications for these structures with TMD,which have the characteristics of nonsymmetrical mass matrix and stiffness matrix as well as non-classical damping matrix,the complex mode superposition-design response spectrum method considering large damping ratio was used to analyze the earthquake responses and effects.

Cantilever seismic calculation of mode-superposition response spectrum method for the gravity dam of Gutianxi first cascade;

Considering the seismic dynamic water pressure and foundation elasticity,the dynamic response of Baoquan masonry gravity dam is calculated by using the three-dimensional finite element method and the mode-superposition response spectrum method given in Specifications for Seismic Design of Hydraulic Structures(DL5073-2000).

By using the finite element ANSYS,the paper calculates the whole structure,and analyzes its response under the earthquake action by using the mode-superposition response spectrum method,obtains the natural vibration characteristics of the structure and its different characteristics under the vertical and horizontal earthquake action through the analysis.