摘要
盾构隧道下穿既有地铁建筑物,不可避免会对建筑物产生一定的影响,在软弱土层中的穿越影响更大。以福州某线路缆化工程新建隧道盾构下穿既有轨道交通地铁1号线排下站附属2号出入口及3号出入口为背景,采用三维数值模拟方法,分析研究新建盾构隧道下穿既有地铁车站出入口过程中,既有地铁车站出入口结构的变形情况。结果表明,新建盾构隧道下穿施工对既有地铁车站出入口结构变形的影响较小。同时,提出盾构隧道下穿既有地铁车站出入口的控制措施,并通过工程实施情况,进行实践验证,可为今后类似工程提供一定的参考。
Shield tunnels will inevitably have certain impacts when passing through existing subway buildings,especially in soft soil layers.A newly-built shield tunnel of a cable engineering project in Fuzhou underpasses the existing rail transit subway line 1 Paixia station attached to the No.2 and No.3 entrances and exits as the background,using the method of three-dimensional numerical simulation to analyze the underpassing of the newly-built shield tunnel During the entrance and exit process of the existing subway station,the deformation of the entrance and exit structure of the existing subway station is proposed.The results show that the impact of the new shield tunnel underpass construction on the structural deformation of the existing subway station entrances and exits is small.And,the control measures for the shield tunnel to underpasses the entrance and exit of the existing subway station are proposed,and verified by the actual implementation of this project to provide similar projects in the future.
作者
郑利泽
张朋来
ZHENG Lize;ZHANG Penglai(Power China Hua Dong Engineering Corporation Limited,Hangzhou 311100)
出处
《福建建筑》
2022年第9期119-123,147,共6页
Fujian Architecture & Construction
关键词
地铁车站出入口
盾构
下穿
影响分析
控制措施
Entrance and exit structure of the existing subway station
Shield tunnel
Underpass
Analysis on the influence
Construction control measures
