| The seismic response analysis method of site soil layer is an important means to determine the ground motion parameters,and it is also a hot issue in seismic engineering research.Based on the background of Xichang Earthquake Experimental Site,this paper carries out a comparative study on the seismic response analysis methods of DEEPSOIL,LSSRLI-1 and SOILQUAKE.The main research results are as follows :(1)The background and significance of the research are introduced.Three one-dimensional soil seismic response analysis methods(DEEPSOIL,LSSRLI-1 and SOILQUAKE)are briefly introduced.(2)The topography,rock and soil properties,hydrogeological conditions,seismic geology and other data of Xichang experimental site were collected,and the engineering geological zoning was carried out.Through the geotechnical investigation report of Xichang City and the seismic safety evaluation report of the engineering site,a calculation model for seismic response analysis of 117 soil layers was established.Based on the existing relevant data and work results of the " Xichang Earthquake Prevention and Disaster Reduction Plan," the ground motion was artificially synthesized under the three exceeding probability levels of 63 %,10 % and 3 % in 50 years,which provided basic data for subsequent seismic response analysis of soil layers.(3)The ground motion peak acceleration and the characteristic period of acceleration response spectrum of each borehole surface are calculated by three kinds of soil seismic response analysis methods.Then the calculation results of different methods are divided into different ground motion parameters,and the similarities and differences of the three calculation results in the division are compared and analyzed. |
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