舟山西堠门大桥主缆索股调整技术  

THE ADJUSTMENT TECHNIQUE FOR STRAND OF MAIN CABLE OF XIHOUMEN BRIDGE

作　　者：卢伟[1] 甘洪[1] 虞业强 唐茂林[2] 李润哲[1] 钱建南 

机构地区：[1]四川公路桥梁建设集团有限公司,成都610041 [2]西南交通大学,成都610031

出　　处：《钢结构》2010年第9期74-78,43,共6页Steel Construction

基　　金：国家科技支撑计划项目(2008BAG07B04)

摘　　要：主跨1650m的西堠门跨海悬索桥,主缆长度居国内第一,处于恶劣的沿海季风与台风环境。为确保施工质量与调索效率,在综合考虑影响垂度测量精度的主要因素的基础上,基准索股采用基于单向大气折光系数修正的单向三角高程法进行测量调整;在相对垂度法的基础上,一般索股采用经改进的相对基准索股法进行测量调整。介绍大桥主缆索股垂度调整关键施工技术、工艺措施与索股调整成果,可供类似桥梁工程借鉴。The Xihoumen bridge with 1 650 m main span has the longest main cable of all suspension bridges in China,while it is located in severe monsoon and typhoon inshore environment.To ensure erection quality and sag adjustment efficiency,one way trigonometric leveling is chosen for surveying and adjustment of datum wire strand based on the single-refraction coefficient correcting;An improved relative datum wire strand method is adopted for surveying and adjustment of the other wire strands based on relative（to datum wire strand） sag adjustment method.The key technique,measures and results for sag adjustment are presented and could be used for reference to other similar bridge projects.

关 键 词：西堠门桥 悬索桥 主缆索股 垂度调整 施工技术 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]