重庆千厮门嘉陵江大桥总体施工方案优化  

Optimization of General Construction Scheme for Qiansimen Jialing River Bridge in Chongqing

作　　者：刘小勇 石华平[2] 游新鹏[3] 

机构地区：[1]中交二航局第二工程有限公司,重庆400023 [2]中交第二航务工程局有限公司,湖北武汉430040 [3]长大桥梁建设施工技术交通行业重点实验室,湖北武汉430042

出　　处：《施工技术》2013年第23期1-3,共3页Construction Technology

基　　金：中国交通建设股份有限公司科技研发项目

摘　　要：重庆千厮门嘉陵江大桥是公轨共建的钢桁梁斜拉桥,恒载较一般斜拉桥大,而且斜拉索为单索面布置,控制索力达15 000kN,采用平行钢绞线斜拉索。超大吨位的钢绞线斜拉索在施工过程中索力调整困难,针对性地提出斜拉索一次张拉到位的施工方案,可避免斜拉索索力调整,降低了施工风险和难度。施工方案优化确保了斜拉索一次张拉到位。Qiansimen Jialing River Bridge in Chongqing is a combined highway and railway cable-stayed bridge, whose dead load is much larger than common cable-stayed bridge, moreover, the stayed cables are arranged with single cable plane,the force in control cable is 15 O00kN,the stayed cables with parallel steel strand are used. The cable force adjustment with the stayed cables for super large tonnage steel strands is difficult in construction. The authors put forward the corresponding construction scheme with the first stretching method, which can avoid cable force adjustment of the stayed cables, decrease construction risk and difficulty. Optimization of general construction scheme ensures the stayed cables with the first stretching.

关 键 词：桥梁工程 斜拉桥 钢桁梁 施工方案 优化 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]