Modeling and dynamic analysis of reservoir-dam-foundation considering hydrodynamic pressure and fluid-structure interaction
Combing hydrodynamic pressure model and penalty function coupling algorithm, a numerical model and approach was proposed for analyzing the seismic dynamic response of reservoir-dam-foundation system, considering the contact between dam and foundation as well as the boundary effect. The validity of the model is verified by comparing the results with the experimental results and analytical solutions in literature. It shows that the proposed model and approach is able to describe the seismic load acting on the reservoir-dam-foundation system and the dynamic response of the coupling system accurately and with higher efficiency due to the application of penalty function to deal with fluid-structure interfaces. Application of the proposed model to analysis of a gravity dam in engineering demonstrates the applicability of the model to dynamic analysis of reservoir-dam-foundation system, and the effect of foundation deformation on the dynamic response of the system has been analyzed further.