深层搅拌桩复合地基的有限元分析

Finite Element Analysis for Compound Foundation of Deep Mixing Piles

介绍了用自行编制的适用于群桩地基基础应力、变形分析的三维非线性程序对一种有代表性的群桩进行分析的情况。讨论了深层搅拌桩复合地基的工作机制和应力、变形分布特点，并通过多种方案的比较就不同的荷载水平、桩长、桩上置换率、土层分布、桩身变形模量等诸因素对地基沉降、桩端应力、桩的承载率的影响和规律进行了研究。

A study on a representative pile group compound foundation by using 3-dimensional nonlinear stress and deformation analytical program is introduced in this paper. By comparison between various computational schemes, the discussion includes working mechanism and characteristics of stress and deformation for deep mixing pile compound foundation and the effect of load level, pile length, replacement, distribution of soil layers, deformation modules of piles on foundation settlement, stress of pile top, pile bearing capacity ratio.