上海软土的动力计算模型

将上海饱和软土视为由固相和液相组成的两相饱和多孔介质，根据共振柱试验，动三轴试验，提出一种能够全面考虑应力、应变、振动孔隙水压力，震陷的上海饱和软土等效线性化动力计算模型，并进行了较为详细的参数研究，然后将其与Ｂｉｏｔ动力固结方程相结合，建立了土体有效应力动力计算方法，最后应用该方法对上海土层进行了地震反应分析，并得到一些有益的结论。

Dynamic Calculation Model of Shanghai Soft Soil

In this paper, Shanghai saturated soft soil is modeled as a two-phase porous media system consisting of solid and fluid phases. On the basis of resonant column test and dynamic triaxial test data of Shanghai saturated soft soil, the dynamic calculation model including a set of relationships of stress, strain, pore water pressure and earthquake subsidence is developed to compute the seismic response of soil. The procedure to identify soil constants for the dynamic calculation model is also reported in detail. Subsequently, a dynamic effective stress analysis with the finite element method has been recommended to predict the seismic response of soil. Finally, the developed dynamic calculation model together with the dynamic effective stress analysis is utilized to predict the seismic response of Shanghai soil strata through the finite element method and some valuable conclusions are obtained from the results.