地铁车站换乘天桥桥墩托换关键技术研究  

Study on the Key Technology of Bridge Pier Underpinning of Subway Station Transfer Bridge

作　　者：王雷 邓余海 WANG Lei;DENG Yuhai(Guangzhou Metro Design&Research Institute Co.,Ltd.Guangzhou 510010,China;China City Environment Protection Engineering Co.,Ltd.Wuhan 430205,China)

机构地区：[1]广州地铁设计研究院股份有限公司,广州510010 [2]中冶南方都市环保工程技术股份有限公司,武汉430205

出　　处：《广东土木与建筑》2021年第10期70-72,共3页Guangdong Architecture Civil Engineering

摘　　要：以正在运营的北京地铁13号线和15号线换乘天桥为例,介绍了桥墩托换过程的桩基设计、顶升系统设计、托换后桥梁的安全影响分析、施工监测及设计和施工中的注意事项。结果表明:桥墩托换技术运用于正在运营换乘天桥是可行的;托换设计需重点关注桥梁的受力变形、桥桩的工后沉降、顶升控制。研究成果可为今后相似的工程提供借鉴。Taking the transfer overpass of Beijing Subway Line 13 and Line 15 in operation as an example,introduces the pile founda‐tion design,jacking system design,analysis of the safety influence of the bridge after underpinning,monitoring technology and matters for attention in the design and construction of the pier underrest process.The results show that it is feasible to apply the pier underpinning tech‐nology to the transfer bridge in operation;Underpinning design should focus on the stress and deformation of bridge,post construction settle‐ment of bridge pile and jacking control.The research results can provide reference for similar projects in the future.

关 键 词：桥墩托换 换乘天桥 托换体系 地铁车站 

分 类 号：U231.3[交通运输工程—道路与铁道工程]