摘要
开挖深大基坑极易引起周边土体变形,甚至导致地层土体塌陷,造成重大安全事故。采用物联网系统的多维度变形监测装备,对浙江省义乌市商城大道隧道工程基坑开挖全过程土体变形开展监测,获得了毗邻建筑的深大基层开挖施工土体三维变形数据。将土层变形分为土方层开挖、垫层施工和内支撑拆除3个阶段,分别分析了x、y方向土层变形特征,得到了深大基坑开挖土体的多维变形规律。该研究成果可为深大基坑建设和地层土体变形控制提供重要的理论依据和技术方法。
The excavation of deep and large foundation pit is prone to cause the deformation of surrounding soil mass and even the collapse of stratum soil,which resulting in major safety accidents.Using multi-dimensional deformation monitoring equipment of IOT system,the whole soil deformation of foundation pit excavation of Shangcheng Avenue tunnel project was monitored in Yiwu City,Zhejiang Province.Three-dimensional deformation data of soil during deep and large base excavation of adjacent buildings were obtained.The soil deformation is divided into three stages of soil layer excavation,cushion construction and internal support removal.The soil deformation characteristics in X and Y directions are analyzed respectively to obtain the multi-dimensional deformation law of deep and large foundation pit excavation soil.The research results can provide important theoretical basis and technical methods for deep foundation pit construction and formation soil deformation control.
作者
王江涛
陈峰
朱良韬
景存德
李晗萌
李参天
孟令峰
林鑫
Wang Jiangtao;Chen Feng;Zhu Liangtao;Jing Cunde;Li Hanmeng;Li Cantian;Meng Lingfeng;Lin Xin(China Power Construction Road Bridge Group Co.,Ltd.,Beijing 100160,China;University of Science and Technology Beijing,Beijing l00083,China)
出处
《市政技术》
2022年第3期195-198,共4页
Journal of Municipal Technology
关键词
深大基坑
土体变形
多维度测量
物联网系统
阶段分布
deep foundation pit
soil mass deformation
multidimensional measurement
IOT system
stage distribution
