摘要
结合上海地区某近邻地铁车站及区间隧道超深基坑工程,通过现场监测的手段获取了地铁车站及区间隧道在邻近超深基坑分区开挖下的变形响应数据,并对该监测数据展开了深入的分析和研究。研究结果表明:地铁车站在基坑开挖期间呈现出隆起变形,而邻近地铁车站的两侧区间隧道则呈现出沉降变形;同时地铁车站及区间隧道会产生朝向基坑方向的水平位移,区间隧道会在横向上产生水平拉伸;基坑开挖竖向卸荷对地铁车站及区间隧道的影响要大于基坑开挖侧向卸荷对于地铁车站及区间隧道的影响;基坑开挖期间地铁车站上行区间隆起大于下行区间从而导致地铁车站整体向远离基坑方向产生倾斜。
Deformation response data of metro station and tunnel under adjacent deep excavation was obtained by the field monitoring based on the project,the deep excavation adjacent to metro station and tunnel in Shanghai.And the monitoring data was analyzed in depth.The results show that the metro station presents uplift deformation during deep excavation.However,the tunnel presents settlement.At the same time,horizontal displacement toward to the deep excavation will appear on the metro station and tunnel.And horizontal stretching will appear on the tunnel.The influence of deep excavation on the metro station and tunnel in vertical direction is greater than that in horizontal direction.The metro station will lean toward to the direction of away from the deep excavation during excavation.
作者
沈雯
沈蓉
孙廉威
Shen Wen;Shen Rong;Sun Lianwei(Shanghai Construction Group Co.,Ltd.,Shanghai 201114,P.R.China;College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,P.R.China)
出处
《地下空间与工程学报》
CSCD
北大核心
2019年第S01期354-360,共7页
Chinese Journal of Underground Space and Engineering
基金
住房城乡建设部科学技术项目(2017-K4-016)
上海市科学技术委员会科研计划(16DZ1201601).
关键词
超深基坑
近邻地铁
实测分析
变形
deep excavation
adjacent metro
field monitoring analysis
deformation
