4、盆地和周围山体间存在着显著的动力相互作用,且随着凸起地形高宽比的增大,散射波在盆地和山体之间的转换更加复杂,山体的地表位移幅值峰值甚至增大了3倍。关键词:格林函数,间接边界元法,群山,盆山耦合IABSTRACTThe impact of complex topographyon the ground motion is an important research topic in the fields of seismic engineering, geotechnical engineering, seismology and g
5、eophysics. It is worth noting that domestic and foreign studies have studieda single or a simple multiple topography. However, in fact, mountains, basins and rivers are all continuously distributed. The study on the influence ofunit composite form ofcomplex topography
6、(such as mountainsor basin-mountain coupling topography) on the ground motion is more realistic, which has theoretical significanceand important engineering guiding value. In this paper, indirect boundary element method is used forstudyingthe scattering of two-dimensio
7、nal mountainous topographyand three-dimensional basin-mountain coupling topography. The main work is as follows.1.Scattering of seismic waves by mountainous topography: a new indirect boundary element methodis proposedbased on the periodic Green’s function of inclined
8、load in layered half-space. The scattering problem of elastic wave with periodic distribution of mountainis studied.T