重力坝与水、地基动力耦合系统地震反应的时域分析

Earthquake Response Analysis of Dam-Reservoir-Foundation Dynamic Coupling System in Time Domain

本文采用动力特解边界元法在时域内求解坝－水－地基动力相互作用问题特性．研究了坝体、地基和系统阻尼对坝体的动力特性、动水压力、动力放大系数及稳定系数的影响．结果表明本文方法可方便处理坝、水和地基的动力耦合问题，减少大量计算工作量，并具有较好的精度．

This paper develops a new dynamic particular solution boundary element method to solve the dynamic interactions of damreservoir-foundation system inthetim edomain,studies the influences of elasticity of foundation .fluid of reservoir and damping of system to dynamic characteristic、hydrodynamic pressure and dynamic amplify factor,and calculats the earthquake response of system by using Wilson-θmethod. The results show that the method proposed in this paper can treat conveniently the coupling problems of the system,reduces a lot of computing work and has a good precision.