双侧基坑紧邻地铁车站施工安全影响和保护对策  

Construction Safety Impact and Protection Countermeasures of Double Side Foundation Pit Adjacent to Subway Station

作　　者：张杰 ZHANG Jie(China Design Group Co.,Ltd.,Nanjing 210014,China)

机构地区：[1]华设设计集团股份有限公司,江苏南京210014

出　　处：《常州工学院学报》2024年第3期39-45,共7页Journal of Changzhou Institute of Technology

摘　　要：以南京宁句城际线某车站两侧紧邻的3#、4#基坑为例,运用MADIS/GTS三维有限元软件分析模型研究3#(深)、4#(浅)基坑双侧不同施工时序下地铁结构位移变化规律。研究表明:地铁结构主要发生面向基坑一侧的水平位移;3#基坑主要影响车站主体东侧和1号风亭;4#基坑主要影响车站主体西侧和1号出入口。综合来说,先施工3#深基坑后施工4#浅基坑相比先施工4#浅基坑后施工3#深基坑对地铁车站、附属(风亭、出入口)产生的水平位移大,3#、4#基坑同时施工对地铁车站、附属影响介于3#、4#先后施工之间。Based on the 3#,4#deep and shallow foundation pits adjacent to both sides of a station on Nanjing-Jurong intercity line,the three-dimensional finite element analysis model of MADIS/GTS is used to study the displacement change law of subway structure under different construction sequences of bilateral 3#(deep)and 4#(shallow)foundation pits.The research shows that:the horizontal displacement of the subway structure mainly occurs on the side facing the foundation pit,the 3#foundation pit mainly affects the east side of the main body of the station and the No.1 wind pavilion,and the 4#foundation pit mainly affects the west side of the main body of the station and No.1 entrance and exit.Generally speaking,compared with the construction of the 4#shallow foundation pit after the construction of the 3#deep foundation pit after the construction of 4#shallow foundation pit,the horizontal displacement of subway station and ancillary(wind pavilion,entrance and exit)increases,and when 3#,4#foundation pits are constructed at the same time,the impact on subway stations and ancillary facilities is between 3#,4#successively.

关 键 词：深、浅基坑 施工时序 地铁结构 MADIS 

分 类 号：U231.3[交通运输工程—道路与铁道工程]