The dynamic response of gravity dam-water-foundation rock coupled system at seismic excitation

Starting from 2-D wave equations and making use of Galerkin weighted residual approximations, discra- tized formulations for wave problems of water body have been derived. Then, by coupling the infinite elements with ordinary finite elements, the calculate model for the problems of gravity dam-water-foundation rock dynamic interaction including the reservoir bottom sludge is presented. The propriety of the model and its accuracy have been verified through the analysis of numerical examples. Finally, the major regularities for the hydrodynamic pressure on the upstream face of rigid dams and elastic dams due to horizontal earthquake shock was evaluated and discussed.