地铁竖井横通道施工对既有天桥影响规律研究  

Research on the Impact of Construction of Subway Vertical and Horizontal Channels on Existing Overbridges

作　　者：张照太 申庆梦 马文辉 王健淇 刘猛 邹金品 徐田博 Zhang Zhaotai;Shen Qingmeng;Ma Wenhui;Wang Jianqi;Liu Meng;Zou Jinpin;Xu Tianbo(Beijing Urban Rail Transit Construction Engineering Co.,Ltd.,Beijing,China)

机构地区：[1]北京城建轨道交通建设工程有限公司,北京

出　　处：《科学技术创新》2024年第18期149-152,共4页Scientific and Technological Innovation

摘　　要：城市中心城区中的地铁建设多采用矿山法施工,作为施工作业通道的竖井和横通道建设必将对周边环境产生影响。依托北京地铁22号线某隧道大尺寸竖井横通道施工工程,采用数值模拟方法,精细化模拟竖井和横通道的分层分步开挖施工,研究施工影响下既有人行天桥的变形规律,提出了主动同步顶升技术,为类似工程提供借鉴。The construction of subways in the central urban area often adopts mining methods,and the construction of vertical shafts and horizontal passages as construction work channels will inevitably have an impact on the surrounding environment.Based on the construction project of a large-sized vertical shaft and horizontal passage of a tunnel on Beijing Metro Line 22,numerical simulation methods are used to finely simulate the layered and step-by-step excavation construction of the vertical shaft and horizontal passage.The deformation law of the existing pedestrian overpass under the influence of construction is studied,and active synchronous lifting technology is proposed,providing reference for similar projects.

关 键 词：地铁 浅埋暗挖法 施工通道 人行天桥 数值模拟 变形规律 

分 类 号：U231[交通运输工程—道路与铁道工程]