以重庆市主城区的场地为例,构建了396个场地计算模型进行土层一维等效线性地震反应分析,探讨不同场地条件对地震动参数的影响,通过对结果分析得到了4种场地类别的峰值加速度放大系数和相对应的β谱,并在此基础上研究了土层厚度和场地自振周期对放大系数的影响.%In this paper we took the urban site of Chongqing City as examples,generated 396 computational models of site to analyze the unidimensional equivalent linear seismic response of the soil layers, and discussed the affections of different site conditions on the ground motion parameters. What's more through the analyzing of the results, the amplification of the acceleration peak value of the four kinds of sites and the corresponding β spectrum were generated, based on which the affections of the vibration period of the site and the soil thickness upon the amplification were studied.
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