考虑变形协调的刚性基础复合地基沉降计算

针对当前求解刚性基础下复合地基沉降变形时较少考虑桩土间变形协调的情况，在对若干试验结果分析的基础上，提出了刚性基础下复合地基桩侧摩阻力分布形状的假定，然后分别用荷载传递法、Mindlin解答和弹性力学解答分析了单桩模型中桩体和桩间土的沉降变形，通过桩顶位移变形协调条件建立了求解方程，编制了相应的计算程序，该方法可利用现场实测荷载～沉降曲线进行计算参数的优化反演，因此具有较强的实用价值。最后，用该法对某工程实例进行计算分析，计算结果和实测值吻合较好。

Method for calculating settlement of composite ground under rigid foundation considering distortion coordination

Distortion coordination between pile and soil in composite ground under rigid foundation was seldom considered so far in the computation of settlement of the foundation. Analyzing of data from several field tests showed that the distribution of side friction of pile and settlements of pile and soil could be analyzed by load transfer method,Mindlin solution and elasticity solution respectively. The equation was then established for solving the settlement of composite ground under rigid foundation considering distortion coordination; and the corresponding computer program was developed at the same time. Optimization back analysis was used for identifying parameters in the program. Finally,the method presented in this paper is proved reliable from a case study.