科技创新与应用2025，Vol.15Issue(31)：8-13,18,7.DOI:10.19981/j.CN23-1581/G3.2025.31.002
基于摩尔-库伦模型的地下水对浅层平板载荷试验的影响分析
摘要
Abstract
With the development of urban construction,soft soil foundations are used more and more,and shallow plate load tests are widely used in foundation bearing capacity testing.Taking a factory project in Longhua District,Shenzhen City as an example,this paper uses Mohr-Coulomb Model and Plaxis 3D software to study the impact of groundwater on shallow plate load tests.Experiments and numerical simulations were carried out on 9 test sections by setting three working conditions:zero precipitation,1m precipitation,and 1.5 m precipitation.When there is no precipitation,groundwater reduces the bearing capacity of the foundation soil to about half of the design value;after 1 m of precipitation,the bearing capacity is increased but some points still fail to meet the standard;after 1.5 m precipitation and increasing the elastic modulus of the water-free residual soil layer,the bearing capacity basically meets the design requirements.At the same time,it was found that precipitation can improve the bearing properties of soil,but the loading time is long and the displacement is large when precipitation is 1m,and the loading time is greatly shortened when precipitation is 1.5 m.The study also verified the reliability of the numerical simulation method,and recommended that the groundwater level should be lowered by 1.5 m and stayed static for more than 7 days before the test.This study can provide a reliable basis for engineering design,reduce engineering risks,and ensure the safety and stability of the construction project.关键词
摩尔-库伦模型/载荷试验/地下水/承载力/工程设计Key words
Mohr-Coulomb Model/load test/groundwater/bearing capacity/engineering design分类
土木建筑引用本文复制引用
罗军..基于摩尔-库伦模型的地下水对浅层平板载荷试验的影响分析[J].科技创新与应用,2025,15(31):8-13,18,7.基金项目
国家重点研发计划项目(2022YFC3800900) （2022YFC3800900）
