基于Mindlin板理论的深层搅拌桩墙体受力变形的空间效应

SPATIAL EFFECT OF DEFORMATION OF DEEP MIXING WALL BASED ON MINDLIN'S PLATE THEORY

首先对深层搅拌桩墙体受力变形的性状进行了分析。然后采用Ｍｉｎｄｌｉｎ线弹性厚板理论，建立了深层搅拌桩墙体受力变形空间效应分析的有限元模型，并编制了相应的计算程序。分析与计算表明：１）深层搅拌桩墙体的变形并非简单的刚体转动，而应作弹性体看待；２）深层搅拌桩墙体受力变形的空间效应是明显的；３）采用Ｍｉｎｄｌｉｎ板理论来分析深层搅拌桩墙体受力变形的空间效应是可行和有效的。

The behavior of deformation of deep mixing wall under load is first analyzed. Then according to Mindlin's linear elastic plate theory, the rs model for analyzing spatial effect of deformation of deep mixing wall has been set up. Moreover the relevant Program has been also developed. The results indicate that: 1 ) the deformation of deep mixing wall is not a simple turn as in the case of a rigid body, the wall has to be considered as an elastic one. 2) the spatial effect of deformation of deep mixing wall is obvious. 3) it is feasible and effective to analyze spatial effect of deformation of deep mixing wall using Mindlin's linear elastic plate theory.