柔性群桩－承台－土共同作用的数值分析

Numerical Analyses of Axially Load Flexible Pile Group-cap-soil Interaction

本文提出了一种群桩－承台－土共同作用的数值分析方法。分析了柔性群桩－承台－土复合地基的沉降和桩间土荷载分担比分别与桩长、桩土模量比、桩距和承台与土的相对刚度的关系。以水泥搅拌桩四桩带台为例比较了弹性阶段的沉降计算值与实测值，两者接近。

A numerical method is presented for the analysis of pile group-cap-soil interaction. Using the method developed in this paper, the settement of the composite ground of flexible piles and percentage of load taken by soil, which are respectively related to pile length, replacement ratio, pile-soil moduli ratio, pile spacing and relative stiffness of footing-soil, are studied. The computed results of settlement of a four cement-mixed column in the elastic range and the measured results are in good agreement.