Influence Of Source And Basin Characteristic Parameters On Seismic Effects Of Basins

The magnifying effect of the basin on ground motion has brought profound disasters to mankind.Therefore,earthquake engineering researchers have done a lot of research on the seismic effects of the basin.At present,the study of the seismic effect of the basin mostly uses plane wave incidence.In this paper,when investigating the influence of the source and basin characteristic parameters on the seismic effect of the basin,the source is placed inside the site model,and the two models of point source and surface source are used to explore the basin.For the impact of ground motion response intensity,the main work is as follows:1.Using the spectral element method,based on the two-dimensional simple basin model,comparing the velocity peaks of the basin calculation model and the uniform half-space calculation model,it is found that the basin has a large amplification effect on the ground motion.For the model constructed in this paper,the maximum amplification factor is reached.Around 12.4.2.The spectral element method is used to explore the influence of source and basin parameters on the seismic effect of the basin under the point source model and the outsource model.The results show the basin dip,basin depth,source frequency,source depth,basin soft soil layer and impedance.The change in ratio has a significant impact on the basin edge and the central area of the basin.3.The influence of source and basin characteristics on the seismic effects of basins under the action of point source and surface source is quite different,and should be paid attention to in practical applications.Finally,it summarizes the research work of this paper,and puts forward the problems that need further research and the prospects for the future development vision.