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对饱和软粘土采用粘弹塑性动力本构模型,利用拉格朗日差分法对典型软土地铁车站结构建立地铁车站地震响应的数值计算方法。并进一步利用该方法对软土地铁车站结构振动台模型试验进行数值拟合分析,结果表明土体和结构模型的加速度响应、结构模型表面的动土压力以及结构构件的应变规律的计算结果与试验结果基本吻合。
The viscoelasto-plastic constitutive model of saturated soft clay is used to calculate the seismic response of metro station using the Lagrange method. The numerical simulation of shaking table model test of soft ground metro station is carried out by using this method. The results show that the acceleration response of soil and structure model, the earth moving pressure on the surface of structural model and the strain law of structural members are in good agreement with the experimental results Basically consistent.