基于PLAXIS真空预压法加固软土地基的数值模拟分析

Numerical Simulation Analysis of Soft Soil Foundation Reinforcement Based on PLAXIS Vacuum Preloading Method

本文针对东莞地区软土地质条件下的地基处理问题,通过构建二维有限元模型,利用PLAXIS软件模拟了真空预压过程中土体的变形、应力分布、孔隙水压力变化等关键参数,揭示了真空预压法的加固机理和效果。模拟结果显示,竖向排水板显著加速了软土地基的排水固结过程,有效控制了地基沉降位移,确保了工程的安全性。本文的研究为东莞地区及类似软土地质条件下的工程地基处理提供了科学依据和技术参考。

This article focuses on the problem of foundation treatment under soft soil geological conditions in the Shenzhen area.By constructing a two-dimensional finite element model and using PLAXIS software,it simulates key parameters such as soil deformation,stress distribution,and changes in pore water pressure during the vacuum preloading,and the reinforcement mechanism and effect of vacuum preloading method are revealed.The simulation results show that the vertical drainage plate significantly accelerates the drainage consolidation process of soft soil foundation,effectively controls the settlement displacement of the foundation,and ensures the safety of the project.This study provides scientific basis and technical reference for engineering foundation treatment in Shenzhen and similar soft soil geological conditions.