暗挖区间竖井施工技术  

Construction Technology of Undercutting Interzonal Shafts

作　　者：叶滔 YE Tao(The Second Engineering Co.,Ltd.,China Railway Seventh Bureau Group,Shenyang,Liaoning Province,110000 China)

机构地区：[1]中铁七局集团第二工程有限公司,辽宁沈阳110000

出　　处：《科技资讯》2023年第20期146-149,共4页Science & Technology Information

摘　　要：洞桩法(Pile-Beam-Arch method,PBA)暗挖地铁车站被广泛应用于城市地铁车站施工,竖井施工作为车站施工的首要施工工序,因此竖井的安全关系到整个施工过程。该文以沈阳地铁三号线三好街站竖井施工为工程背景,通过采用Midas GTS NX有限元分析软件,对边桩、钢支撑、角撑等支护结构与开挖过程进行简化模拟,研究了开挖过程中地表沉降、地层水平位移规律。该研究对同类暗挖车站竖井施工有一定指导意义。Undercutting subway stations by the PBA construction method is widely used in the construction of ur‐ban subway stations.Shaft construction is the primary construction process of station construction,so the safety of shafts is related to the whole construction process.This paper takes the shaft construction of the Sanhaojie Station of Shenyang Subway Line 3 as the engineering background,simplifies and simulates supporting structures such as side piles,steel supports and angle braces and the excavation process by using Midas GTS NX finite element analysis software,and studies the law of surface settlement and stratigraphic heave in the excavation process.The study has certain guiding significance to the construction of similar undercutting shafts in the station.

关 键 词：PBA工法 竖井施工 有限元分析 地层水平位移 

分 类 号：U231.3[交通运输工程—道路与铁道工程]