不规则局部地形地质条件下上部结构对地震地面运动的影响

Effects of Superstructure on Seismic Ground Motion under Irregular Local Topography and Geological Conditions

本文探讨了在弹性或粘弹性介质中三维复杂地形和地质条件下,大型建筑物对地震地面运动的影响。本文在频域中求解。利用无限弹性介质中的格林函数建立边界积分方程,并用边界元法进行离散。利用上部结构底部位移和力的关系与上述离散的方程共同求解来考虑上部结构与地基的相互作用。利用对应原理建立了粘弹性介质中的解。

The effects of large buildings, such as the nuclear power plant, on seismic ground motion of viseo-elastic media with complicated topography and geological conditions are studied. The boundary integral equation is established by using Green's functions in infinite elastic medium in frequency domain. The discretization is performed by using boundary element method. The interaction between soil and structure is considered through the relationship between displacement and force at the base of the structure which is solved together with the discrete equations for the media. The solution in visco-elastic medium is obtained by using the elasticviscoelastic correspondence principle.