碎石桩加固软土地基处理的有限元分析

Finite Element Analysis on Soft Soil Foundation Reinforcement with Gravel Pile

利用有限元软件Abaqus以某Ⅶ级地震地区拟建的水闸工程为例,对闸室结构和桩基加固地基进行数值模拟,首先对碎石桩设计参数采用有限元工具进行选择,并利用顾淦臣动孔压模型曲线对碎石桩加固地基进行液化范围的判定。分析表明借助有限元工具从承载能力、沉降变形和抗液化能力等方面进行碎石桩加固地基参数的选择满足工程的设计要求。

Abstract： Taking the proposed sluice project in a 7.0-magnitude earthquake region for example, the finite element software Abaqus is used here for the numerical simulation of the chamber structure and pile foundation reinforcement. Firstly, the design parameter of gravel pile is selected, then the decision of the gravel pile reinforcing foundation＇ s liquefaction range is carried out by using Guganchen dynamic pore pressure model curve. The analysis results show that the parameter selection for the gravel pile reinforcing foundation from the bearing capacity, settlement deformation and liquefaction resistance ability with the aid of finite element tool could meet the requirements of engineering design.