软土地基土工格栅加筋效果的数值分析

应用有限差分软件FLAC 3D对一座原型加筋试验墙的工作性态进行数值模拟,计算结果与观测资料吻合很好,说明了用本文方法预测加筋挡土墙应力变形规律的有效性;在此基础上,对土工格栅加筋和未加筋的软土地基进行计算分析,通过对比两种情况下地基沉降值、水平位移值和内部应力值,可以看出土工格栅加筋能够有效地减少软土地基的沉降,限制地基侧向变形,并且能分散地基内部的集中应力,证明土工格栅加筋是一种非常有效的软基处理方法。

Numerical Analysis of Reinforcement Effect for Geogrid Placed in Soft Soil Foundation

A finite difference software（FLAC3D） was used to carry on numerical simulation of reinforced retaining wall,and the calculated results shows well accordance with the observed data.This shows the effectiveness of the stress deformation law for forecasting the reinforced retaining wall by method mentioned in this article.Calculation and analysis are carried out for soft soil foundation which use geogrid and the other not,and through comparison of the foundation settlement,horizontal displacement and internal stress,it can be concluded that geogrid can effectively reduce the settlement of soil foundation and restrict lateral deformation of the foundation,and disperse the centralized stress.So geogrid is a good material to treat soft soil foundation.