复杂环境下明挖施工高速铁路隧道深基坑变形特点研究
Research on Deformation Characteristics of Deep Foundation Pit in High-speed Railway Tunnel During Open Excavation Construction in Complex Environment
高翔1
作者信息
- 1. 中铁十四局集团第二工程有限公司,山东 泰安 271000
- 折叠
摘要
文章依托某高速铁路隧道工程,对基坑开挖施工过程中的地表沉降、坡顶竖向和水平位移及深层水平位移进行监测,并对监测结果进行分析.研究结果表明:地表沉降曲线呈现下凹型,地表的沉降量随着基坑深度的增加而增加;坡顶竖向沉降在不同位置的变化趋势相近;坡顶水平位移随时间增加表现为先增后减的周期性趋势;深层水平位移随开挖深度呈现"中间大,两头小"的形状.研究结果对类似高速铁路隧道基坑工程具有一定的指导意义.
Abstract
Based on a high-speed railway tunnel project,this paper monitored the surface settlement,vertical and horizontal displacement of slope top and deep horizontal displacement during the excavation of foundation pit,and analyzed the monitoring results.The research results show that the surface settlement curve is concave,and the surface settlement increases with the increase of the depth of the foundation pit;the variation trend of vertical settlement at the top of the slope is similar at different positions;the horizontal displacement at the top of the slope shows a periodic trend of first increasing and then decreasing with time;the deep horizontal displacement presents the shape of"large in the middle and small at both ends"with the excavation depth.The research results have certain guiding significance for similar high-speed railway tunnel foundation pit engineering.
关键词
高速铁路隧道/基坑开挖/沉降监测Key words
high-speed railway tunnel/foundation pit excavation/settlement monitoring引用本文复制引用
出版年
2024
NETL
NSTL
万方数据