佛山地铁2号线湾华站-登州站区间中间风井施工监测分析  

Monitoring and Analysis of the Construction of the Intermediate Air Shaft between Wanhua Station and Dengzhou Station of Foshan Metro Line 2

作　　者：杨洋 YANG Yang(CCCC Second Highway Engineering Co.,Ltd.,Xi'an 710199,Shaanxi,China)

机构地区：[1]中交第二公路工程局有限公司,陕西西安710199

出　　处：《工程技术研究》2024年第6期27-29,共3页Engineering and Technological Research

摘　　要：文章主要从墙体水平位移、地面沉降、支撑轴力等监测项目出发,对佛山地铁2号线湾华站—登州站区间中间风井进行全过程的施工监测数据分析,结果表明,在基坑开挖过程中,墙体水平累计位移最大值不断增大,且所处位置不断下移,最后于0.6H(H为基坑深度)附近趋于稳定;累计地面沉降最大值对应距离坑边20 m处,约为0.57H;第三层支撑轴力在开挖第五层时达到最大值,此时地面沉降也较大,应重点关注支撑轴力前后变化幅度较大的节点。Based on the monitoring items such as horizontal displacement of the wall,ground subsidence and supporting axial force,this paper analyzes the construction monitoring data of the intermediate air shaft in the interval between Wanhua Station and Dengzhou Station of Foshan Metro Line 2.The results show that during the excavation of the foundation pit,the maximum value of the horizontal cumulative displacement of the wall increases continuously,and the position moves down continuously.Finally,it tends to be stable near 0.6 H(H is the depth of the foundation pit).The maximum cumulative land subsidence corresponds to 20 m away from the pit edge,which is about 0.57 H;the support axial force of the third layer reaches the maximum value when the fifth layer is excavated,and the ground subsidence is also large at this time.We should focus on the nodes with large changes in the support axial force before and after excavation.

关 键 词：地铁区间 中间风井 墙体水平位移 地面沉降 支撑轴力 

分 类 号：U231.3[交通运输工程—道路与铁道工程]