上海软土的动力计算模型  

Dynamic Calculation Model of Shanghai Soft Soil

作　　者：黄雨[1] 陈竹昌[1] 周红波[2] 

机构地区：[1]同济大学地下建筑与工程系,上海200092 [2]上海建筑科学研究院,上海200032

出　　处：《同济大学学报（自然科学版）》2000年第3期359-363,共5页Journal of Tongji University:Natural Science

基　　金：上海市建设技术发展基金资助项目

摘　　要：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 。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.

关 键 词：饱和软土 地震反应 软土 动力计算模型 上海 

分 类 号：TU435[建筑科学—岩土工程] TU447[建筑科学—土工工程]