流变性软土地基模型的时效性分析与刚度计算

建立了线性粘弹性半空间地基模型，并给出了地基柔度矩阵和刚度矩阵的计算公式。文中以上海香港广场北块地库深基坑工程为例，对基坑围护结构的变形和内力，将原设计的理论计算值、实测值与本文采用时效性地坛模型的理论计算值进行了对比分析。结果表明，时效性地基模型的理论计算值与实测值较吻合，反映出该地基模型在流变性软土地落中对基坑围护结构的变形和受力分析具有较好的适用性。

Time Dependent Analysis and Stiffness Calculation of Ground Model in Rheological Soft-clay

The paper has established a linearly viscoelastic ground model in elastic half-space, and has derived the formulae of ground flexibility matrix and stiffness matrix. For the deformation and stress of the support system of foundation pit,the paper has given the example in Hong Kong square, and has compared calculated values in original design and measured values with calculated values on the basis of grouch model. The results show that the values calculated from the time depedent ground model are in better agreement with the measured values. Therefore, the model is more suitable for analyzing mechanical behavior of the support system of foundation pit in rheological soft-clay ground.