无砟轨道钢桁加劲连续梁设计与施工技术要点  

Key Points in the Design and Construction of Ballastless Track Steel Truss Stiffened Continuous Girder

作　　者：浑铁链 HUN Tielian(China Railway Design Corporation,Tianjin 300308,China)

机构地区：[1]中国铁路设计集团有限公司,天津300308

出　　处：《铁道建筑技术》2023年第9期32-34,共3页Railway Construction Technology

基　　金：中国铁路设计集团有限公司科技开发重点课题(2019YY220607)。

摘　　要：郑阜高铁是设计速度350 km/h的高速项目,该项目控制因素多,施工难度大,桥梁占比高。为解决跨越高等级航道、高速公路等重要工点所采用的大跨度桥梁施工、维修养护难题,桥梁设计研究采用了新式桥梁组合结构、新施工工艺及新技术。本文详细介绍了两座主跨172 m曲弦钢桁加劲梁的设计要点及施工技术难点,该类型结构降低了桥梁温度跨度,解决了运营期间维修养护的难题及施工难的问题,为同类跨度的铁路桥梁设计提供了新思路,可为类似工程提供参考。The design speed of the Zhengzhou-Fuyang High-speed Railway is 350 km/h,with many design control factors,high construction difficulty,and a high proportion of bridges.In order to solve the construction and maintenance difficulties of large span bridges used in important construction sites such as crossing high-grade waterways and highways,new bridge combination structures,new construction processes,and new technologies are adopted in bridge design and research.This paper provides a detailed introduction to the design points and construction technical difficulties of two curved-string steel truss stiffened girders with a main span of 172 m.This type of structure reduces the temperature span of the bridge,solves the problems of maintenance and construction during operation,and provides new ideas for the design of railway bridges with similar spans,which can provide reference for similar projects.

关 键 词：郑阜高铁 曲弦钢桁加劲梁 设计要点 施工技术难点 

分 类 号：U442.5[建筑科学—桥梁与隧道工程] U445.4[交通运输工程—道路与铁道工程]