摘要
以深圳地铁11号线车公庙站交通枢纽工程为研究背景,分析西端风道基坑开挖和紧邻西端风道的11号线车站基坑开挖对既有深圳地铁1号线隧道的影响,采用三维有限元软件ABAQUS对隧道无保护措施和对土体加固措施2种工况进行计算,分析基坑开挖引起既有隧道的变形规律和旋喷桩的加固效果。同时在隧道内安装自动化监测系统,对隧道变形进行实时监测,通过反馈的监测数据对隧道变形情况进行分析,确保运营隧道的安全。结果表明:旋喷桩加固可以有效地减少隧道隆起的位移。
The impact of the excavation of the foundation pits of the west ventilation tunnel and the station of Chegongmiao comprehensive transportation hub on Line 11 of Shenzhen Metro on the existing tunnel of Line 1 of Shenzhen Metro is an- alyzed in the paper. The rule of the deformation of the existing tunnel induced by the excavation of the foundation pits, as well as the consolidation effect of the jet grouting piles, is analyzed by means of three-dimensional finite element pro- gram ABAQUS. Furthermore, the deformation of the existing tunnel is analyzed on basis of the measured data. It is con- cluded that the jet grouting consolidation can effectively reduce the uplift displacement of the existing tunnel.
出处
《隧道建设》
北大核心
2015年第9期867-872,共6页
Tunnel Construction
基金
中国中铁股份有限公司科技开发计划项目(2012-19)
关键词
深圳地铁
两相邻基坑开挖
西端风道
既有隧道
旋喷桩
监测
三维数值分析
Shenzhen Metro
adjacent foundation pits
west ventilation tunnel
existing tunnel
jet grouting pile
moni- toring
three-dimensional numerical analysis
