侧向受荷桩基性状的数值分析

NUMERICAL ANALYSIS OF BEHAVIOR OF LATERALLY LOADED PILED FOUNDATION

理论方法或数值方法均可用于分析受邻近土体变形影响的桩基内力与变形性状。然而,土体变形分析结果的精度却常常不能令人满意。采用有限单元法对桩-土相互作用或对承受相邻土体变形影响的桩基的性状进行分析是一种较为有效的分析途径。采用二维平面应变有限元程序建立了周围土体变形条件下单桩的非线性等效分析模型,并与其他方法进行对比。结果表明,采用侧向受荷桩基性状的数值分析分析邻近基坑的单桩和边坡上的单桩的受荷变形性状是可行的,且分析结果与其他方法的分析结果较为一致。

A number of theoretical and numerical approaches can be used to analyze the internal forces and deformation properties of laterally loaded piled foundation due to soil movement. But the accuracy of soil movement is usually far from satisfaction. Finite element analysis offers an effective way to analyze the pile-soil interaction or the behavior of laterally loaded pilef foundation due to adjacent soil movement. This research presents non-linear plain strain equivalent model of single pile due to soil movement and compares the results of other methods. It is concluded that the method presented is reasonable to analyze the single pile behavior near excavation,whose results agree with other methods results.