【摘要】 以水泥土桩单桩复合地基静载荷试验为原型，采用上海典型粘土层的非线性本构模型，以三维有限元对水泥土桩复合地基中的桩身应力、桩间土应力、位移特性进行计算分析，取得了一些用实测手段难以得到的结果，并将部分计算结果与实测资料进行对比分析。更多还原

【Abstract】 In this paper, the characteristics of composite foundation improved by cement-soil plies have been studied with three-dimensional finite element method (FEM). The calculation model is based on field loading test of single-pile composite foundation. The nonlinear characteristics of Shanghai typical soft soils have also been taken into consideration in the model. The distribution of stress and displacement both in pile and soils under different load has been analyzed according to calculation results, part of which has been compared with field measured results. The conclusion in the paper can be helpful to the design of comPOsite foundation.更多还原