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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。
Both theoretical and numerical methods can be used to analyze the internal forces and deformations of piles affected by the deformation of adjacent soil. However, the accuracy of soil deformation analysis results are often unsatisfactory. Finite element method is a more effective method to analyze the pile-soil interaction or the effect of pile foundation on the deformation of adjacent soil. A two-dimensional plane strain finite element program was used to establish the nonlinear equivalent model of single pile under the deformation of surrounding soil, and compared with other methods. The results show that it is feasible to analyze the load-bearing deformation behavior of single pile adjacent to the foundation pit and the slope by numerical analysis of the behavior of the laterally loaded pile foundation. The analysis results are in good agreement with those of other methods.