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针对某特定工程,依据不同的土层参数,通过设置边界弹簧和阻尼模拟地基土作用,构造三维黏弹性动力人工边界有限元模型,进行随机地震反应数值仿真;依据合成的基准地面SL-2、SL-1的基岩设计地震动时程,进行工程成层地基模型的自由场地震反应时程分析,建立了各楼层的考虑土-结构相互作用的地震反应及各层水平和竖向加速度反应谱的计算。
According to the different soil parameters, the three-dimensional visco-elastic dynamic artificial boundary finite element model is constructed by setting the boundary spring and damp-simulating the action of the subsoil. According to the synthetic reference ground SL-2, SL-1 bedrock design ground motion time-history, the free-field seismic response time-history analysis of the engineering stratified foundation model is established, and the seismic response of each floor considering the soil-structure interaction and the horizontal and vertical acceleration responses Spectrum calculation.