An efficient method for dam-reservoir seismic interaction analysis

An efficient method for two-dimensional dynamic interaction analysis of gravity dam-reservoir systems is presented. The Euler-Lagrangian approach, based on BEM-FEM formulation in the frequency domain, is adopted. Displacement-based finite elements for the structure and velocity potential-based boundary elements for the fluid domain are developed. Compressibility of the fluid is considered. In this formulation, symmetry of the equations system could only be achieved once the fluid domain is circular and interaction absent. The results show that this method can be offered as an appropriate method for dam-reservoir interaction analysis and indeed extendable to time-domain analysis.