深厚软土基坑不同加固形式效果研究  

Study on Effects of Different Reinforcement Forms for Foundation Pit in Deep Soft Soil

作　　者：郭伟强 杨旭 杨世忠 杜兴 李航 GUO Weiqiang;YANG Xu;YANG Shizhong;DU Xing;LI Hang(CREGC Shenzhen Co.,Ltd.,Shenzhen 518054,Guangdong,China)

机构地区：[1]深圳中铁二局工程有限公司,广东深圳518054

出　　处：《路基工程》2024年第5期188-193,共6页Subgrade Engineering

基　　金：中铁二局工程有限公司科技项目:沿海地区软土地层深大异型基坑关键技术研究(2021-重点-15)。

摘　　要：结合广东省软土地区某地铁车站基坑工程,采用有限元软件midasGTS进行数值模拟,研究不同加固形式对限制基坑变形的效果。结果表明:不同的加固形式对限制基坑变形的效果差异明显;不同加固形式下,随着加固面积比的提高对基坑变形的限制作用均有所增加,但并不呈现线性关系;当加固面积比达到某一数值后,限制基坑变形的效果均不再提升;在加固面积相同的情况下,采用抽条加固对限制基坑变形效果最佳。In relation to the foundation pit engineering of a metro station in soft soil region in Guangdong Province,the finite element software midas GTS was used to carry out numerical simulation and study the effects of different reinforcement forms on restriction of foundation pit deformation.The result shows that,there exist significant differences among the effects of different reinforcement forms on restriction of foundation pit deformation;under each reinforcement form,the restriction effect on foundation pit deformation is improved with the increment of reinforced area ratio,but not in linear relationship;when the reinforced area ratio reaches a certain value,the restriction effect is no longer improved;when the reinforced area is the same,strip reinforcement will contribute an optimal effect on restriction of foundation pit deformation.

关 键 词：深厚软土 基坑加固 监控量测 数值模拟 变形控制 稳定性 

分 类 号：U231.4[交通运输工程—道路与铁道工程]