紧贴地铁车站共用地下墙的深基坑开挖对既有地铁结构的影响分析  

Analysis on the Infl uence of Deep Foundation Pit Excavation Close to the Common Underground Wall of Subway Station on the Existing Subway Structure

作　　者：郑滔 ZHENG Tao(Guiyang Public Transport Investment and Operation Group Co.,Ltd.,Guiyang 550000,Guizhou,China)

机构地区：[1]贵阳市公共交通投资运营集团有限公司,贵州贵阳550000

出　　处：《工程技术研究》2024年第16期11-13,共3页Engineering and Technological Research

摘　　要：文章以紧贴贵阳轨道交通1号线中山西路站的新建基坑工程为依托,通过有限元软件进行数值模拟,得出了紧贴有地铁车站共用地下墙的深基坑开挖过程中既地铁结构的变形规律:基坑开挖时地铁结构发生朝基坑方向倾斜,最大变形为共用地下墙顶部及中部往基坑方向的水平位移,共用地下墙底部及轨行区侧墙则发生背向基坑的较小水平位移,共用地下墙附近的地表发生较小沉降、底板结构及道床出现少量隆起。对比研究数值模拟与现场监测成果后,提出了相关建议措施。Based on the newly-built foundation pit engineering close to the West Zhongshan Road Station on Guiyang Rail Transit Line 1,the deformation law of the existing subway structure during the excavation of the deep foundation pit close to the common underground wall of the subway station is obtained by numerical simulation through the fi nite element software:during the excavation of the foundation pit,the subway structure tilts towards the direction of the foundation pit,the maximum deformation is the horizontal displacement from the top and middle of the common underground wall to the direction of the foundation pit,the bottom of the common underground wall and the side wall of the track area have a small horizontal displacement opposite to the foundation pit,and the ground surface near the common underground wall has a small settlement,and the bottom plate structure and the ballast bed have a small amount of uplift.After comparing the results of numerical simulation and field monitoring,relevant suggestions and measures are put forward.

关 键 词：深基坑变形监测 既有地铁车站 共用地下墙 深基坑开挖 

分 类 号：U231[交通运输工程—道路与铁道工程]