襄渝二线老河口汉江特大桥上部结构施工  

Construction of Superstructure of Laohekou Hanjiang River Bridge on the Second Xiangfan-Chongqing Railway

作　　者：谢红跃 王彪 

机构地区：[1]中铁大桥局股份有限公司,湖北武汉430050

出　　处：《世界桥梁》2008年第A01期17-20,23,共5页World Bridges

摘　　要：襄渝铁路二线老河口汉江特大桥上部结构预应力混凝土连续箱梁墩顶0号块采用支架现浇法施工,中间节段采用菱形挂篮悬臂灌注法施工。主要介绍0号块施工、中间节段施工以及跨中合龙等关键技术。The pier-top segments No. 0 of the prestressed concrete continuous box girder of the superstructure of Laohekou Hanjiang River Bridge on the Second Xiangfan-Chongqing Rail- way were constructed by the cast-in-situ method on scaffolding while the middle segments were constructed by the cantilever cagt-in-situ method by the diamond-shaped form travelers. In this paper, the key techniques for construction of the segments No. 0, middle segments and midspan closure segments are mainly described.

关 键 词：预应力混凝土桥 铁路桥 箱形梁 上部结构 桥梁架设 

分 类 号：U445.466[建筑科学—桥梁与隧道工程]