高邮至镇江特大桥总体设计及技术创新  

Overall Design and Technological Innovation of Gaoyou to Zhenjiang Super Major Bridge

作　　者：陈杰[1] CHEN Jie(China Railway Shanghai Design Institute Group Co.Ltd.,Shanghai 200070,China)

机构地区：[1]中铁上海设计院集团有限公司,上海200070

出　　处：《铁道建筑技术》2022年第6期63-68,共6页Railway Construction Technology

基　　金：中国铁路总公司科技研究开发计划课题(2015G002-D);中铁上海设计院集团有限公司科技研发项目(集17-14)。

摘　　要：新建连云港至镇江高铁高邮至镇江特大桥长度达到89.784 km,位居世界长桥前列。本文介绍高邮至镇江特大桥建设条件、主要设计原则、技术特点;对跨越淮河入江水道泄洪通道夹江的重点桥式方案进行对比分析,采用主跨4×100 m刚构连续梁跨越20 m深水区;通过试验研究,创新提出跟钻法新型管桩施工工艺,丰富了我国铁路桥梁桩基设计方法;首次在高铁运用简支梁调跨桥墩灵活高效解决了超长多控制节点桥梁孔跨布置难题;结合工程所在地域文化特点及运营养护经验,对高铁桥梁栏杆进行优化设计,为铁路桥梁景观设计提供了新思路及案例。高邮至镇江特大桥总体设计和技术创新经验,对以后高铁超长桥梁设计有较好的借鉴意义。The Gaoyou-Zhenjiang Super Major Bridge on the newly built Lianyungang-Zhenjiang High-speed Railway is 89.784 km long,ranking among the world’s longest bridges.This paper mainly introduced the construction conditions,main design principles and technical characteristics of the Gaoyou-Zhenjiang Super Major Bridge.The key bridge-type schemes spanning the Jiajiang River,the flood discharge channel of the Huaihe River into the Yangtze River were compared and analyzed,using the main span of 4×100 m rigid frame continuous girder to span the 20 m deep water area.Through experimental research,a new type of pipe pile construction technology with the follow-drilling method was innovatively proposed,which enriched the design method of the pile foundation of railway bridges in China.For the first time in high-speed railway,simply supported beams with adjustable span bridge piers were used flexibly and efficiently to solve the problem of hole-span layout of super-long multi-control node bridges.Combined with the regional cultural characteristics and operation and maintenance experience of the project,the optimized design of the railings of the high-speed railway bridge provides ideas and cases for the landscape design of railway bridges.The overall design and technological innovation experience of the Gaoyou-Zhenjiang Super Major Bridge has a good reference for the design of super-long high-speed railway bridges in the future.

关 键 词：高速铁路 桥梁设计 刚构连续梁 孔跨布置 管桩 跟钻法 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]