青藏高原峡谷大跨度钢管拱桥拱肋施工关键技术  

Key Construction Technology of Arch Rib of Long Span Steel Tube Arch Bridge in Tibetan Plateau Canyon

作　　者：朱志钢 周文 张立军 王睿 魏志强 吴春城 ZHU Zhigang;ZHOU Wen;ZHANG Lijun;WANG Rui;WEI Zhiqiang;WU Chuncheng(China Railway Guangzhou Engineering Bureau Group Co.,Ltd.,Guangzhou,Guangdong 510000,China;Tibet Railway Construction Co.,Ltd.,Lhasa,Tibet 850000,China;China Railway Qinghai-Tibet Group Co.,Ltd.,Xining,Qinghai 810000,China)

机构地区：[1]中铁广州工程局集团有限公司,广东广州510000 [2]西藏铁路建设有限公司,西藏拉萨850000 [3]中国铁路青藏集团有限公司,青海西宁810000

出　　处：《施工技术》2019年第23期6-11,共6页Construction Technology

摘　　要：某铁路中承式钢管混凝土拱桥主跨计算跨径430m,钢管拱设计采用节段拼装,共有56节段,最大重250t。主要介绍了该桥钢管拱节段加工制造、翻身下河、水上运输、采用缆索吊机进行起吊架设和合龙等过程中的施工关键技术。Computational span of the main span of a railway half-through concrete-filled steel tube arch bridge is 430m.The steel tube arch is designed with segment assembly.There are 56 segments with the maximum weight of 250 tons.This paper mainly introduces the key construction technology of the steel pipe arch section of the bridge in manufacturing process,turning over to the river,water transportation,hoisting and erecting with cable crane and closure.

关 键 词：桥梁工程 钢管拱桥 水上运输 架设 合龙 施工技术 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]