新建高铁特大桥跨既有铁路路基注浆加固技术及新增设备研究  

Research of Grouting Reinforcement Technology and New Equipment for New High-Speed Railway Extra-Large Bridge over Existing Railway Roadbed

作　　者：贺玉朋 HE Yu-peng(Beijing Ruiwei Century Railway Engineering Co.Ltd.,Beijing 101499,China)

机构地区：[1]北京瑞威世纪铁道工程有限公司,北京101499

出　　处：《工程建设与设计》2024年第17期229-231,共3页Construction & Design for Engineering

摘　　要：新建高铁东山边水阳江特大桥,以一联40 m+72 m+40 m转体连续梁上跨既有皖赣线,施工36号墩对既有铁路运营安全存在隐患。为了解决此问题,采用“吊轨梁架设加固既有轨道线路+垂直及斜向袖阀管”注浆加固施工技术及措施对既有铁路路基及36号墩进行地层改良,保证施工安全及既有铁路运营安全。The new Dongshan-bian Shuiyangjiang Large High-Speed Railway Bridge spans the existing Anhui and Jiangxi lines with a 40 m+72 m+40 m rotary continuous beam.The construction of pier 36 has hidden dangers to the operation safety of the existing railway.In order to solve this problem,the construction technology and measures of“erection of hanging rail beam to strengthen the existing track line+vertical and oblique sleeve valve tube”are used to improve the existing railway subgrade and pier 36,so as to ensure the construction safety and operation safety of the existing railway.

关 键 词：桥墩桩基 路基 岩溶 注浆加固 

分 类 号：U443.15[建筑科学—桥梁与隧道工程] U443.22[交通运输工程—道路与铁道工程]