张吉怀铁路酉水大桥非对称拱桥钢拱肋架设技术研究  

Study on Erection Technology for Steel Arch Rib of Unsymmetrical Arch Bridge for Youshui Bridge on Zhangjiajie-Jishou-Huaihua Railway

作　　者：孙凤祥[1] 左少群 李江[1] SUN Fengxiang;ZUO Shaoqun;LI Jiang(The Fifth Engineering Co.,Ltd.of China Railway Major Bridge Engineering Group Co.,Ltd.,Jiujiang 332001,China)

机构地区：[1]中铁大桥局集团第五工程有限公司,江西九江332001

出　　处：《高速铁路技术》2024年第2期102-107,118,共7页High Speed Railway Technology

基　　金：中铁大桥局集团有限公司科技研究开发计划项目(2018-19-重点)。

摘　　要：张吉怀铁路酉水大桥主桥为主跨292 m的非对称上承式钢管混凝土拱桥,其钢拱肋采用斜拉扣挂法进行节段悬臂架设施工。本文结合张吉怀铁路酉水大桥工程,针对高速铁路非对称拱桥钢拱肋安装施工技术展开研究,主要包括:复杂地形条件下的施工技术,因地制宜地进行缆索起重机的设计及安装,钢管拱整节段拼装和架设,合龙装置和技术等。该施工技术保障了钢拱肋架设的精度和质量,钢拱肋的成拱线形与设计值较为吻合。该桥运营以来,各结构性能指标均满足设计要求。Youshui Bridge on Zhangjiajie-Jishou-Huaihua Railway is a main bridge with a main span of 292 m,and it is an asymmetric upper-arch concrete-filled steel tube arch bridge,whose steel arch ribs were erected using the inclined cablestayed buckling method for segmental cantilever construction.The paper focuses on the erection technology for the steel arch ribs of asymmetric arch bridge of high-speed railways,for which Youshui Bridge on Zhangjiajie-Jishou-Huaihua Railway was taken as an case for study.The contents of this study mainly include construction technology under complex terrain conditions,design and installation of cable cranes according to local conditions,assembly and erection of steel tube arch segments,and the closure device and technology,etc.The above construction technologies ensure the accuracy and quality of the steel arch rib erection,and the shape of the steel arch rib closely matches the design values.Since the operation of the bridge,all structural performance indicators have met the design requirements.

关 键 词：张吉怀铁路 酉水大桥 非对称钢管混凝土拱桥 钢拱肋 斜拉扣挂法 施工技术 

分 类 号：U448.22[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]