软土地层轨道交通车站近接下穿城际铁路桥安全施工关键技术研究  

Research on Key Technology of Safety Construction of Rail Transit Station Close to&Under Crossing Intercity Railway Bridge in Soft Soil Stratum

作　　者：何茂周 HE Mao-zhou(POWERCHINA Southern Investment Co.,Ltd.,Shenzhen 518000,China)

机构地区：[1]中电建南方建设投资有限公司,广东深圳518000

出　　处：《中国市政工程》2024年第5期94-99,164,165,共8页China Municipal Engineering

摘　　要：随着城市轨道交通和城际铁路快速发展,二者在线路上出现交叉情况,其中近接、下穿、上跨是施工难点。文章以深圳市城市轨道交通L12和平站为背景工程,针对软土地层轨道交通车站近接下穿城际铁路桥如何保障安全施工,从桥墩保护方案、基坑开挖工序等方面进行研究。施工采用钢支撑伺服系统控制等新技术,通过施工监测结果证明,城际铁路桥梁、车站基坑变形可控,结构安全,实现了轨道交通车站下穿城际铁路桥安全建造。With the rapid development of urban rail transit and intercity railways,there are intersections between the two on the line,where proximity,underpassand overpass present construction challenges.The article uses the Heping Station of Shenzhen urban rail transit L12 as the background project,focusing on how to ensure safe construction of intercity railway bridges in close proximity to soft soil layer rail transit stations.It studies the protection scheme of bridge piers,excavation procedures of foundation pits,and other aspects.The construction adopts new technologies such as steel support servo system control.Through construction monitoring results,it has been proven that the deformation of intercity railway bridges and station foundation pits is controllable,the structure is safe,and the safe construction of intercity railway bridges under rail transit stations has been achieved.

关 键 词：下穿城际铁路桥 安全施工 桥墩保护方案 基坑开挖工序 伺服钢支撑 

分 类 号：U231.3[交通运输工程—道路与铁道工程]