九州航道桥主塔柱垂直转体安装工艺  

Installation Technology of the Main Tower with Vertical Swivel Method for Jiuzhou Channel Bridge

作　　者：王紫超[1,2] 

机构地区：[1]中交第二航务工程局有限公司,湖北武汉430040 [2]交通部长大桥梁建设施工技术交通行业重点实验室,湖北武汉430040

出　　处：《施工技术》2015年第4期85-88,共4页Construction Technology

摘　　要：对桥梁钢塔的垂直转体工艺进行详细设计,并介绍了优化设计方法;对钢塔转体过程中的受力进行分析,并对局部加固进行了说明,给出计算结果;由于转体拉力较大,不平衡力大,不可控因素较多,对转体关键设备即液压连续提升千斤顶的选型提出了技术要求;由于钢塔要转体到垂直位置,对钢塔转体过程中,尤其是对转到钢塔重心过转点时的稳定性进行了定量分析,并提出了门架下放装置接力转体和反拉系统同时作用的解决办法。This paper introduces optimization design method and the process of vertical swivel technology of steel tower in detail,analyzes and calculates the whole force process. The partial reinforcement to the steel tower is elaborated,then the results are provided. Because the tension is very large,and the unbalanced tension is very large too,which causes many uncontrollable factors,so this paper puts forward strict technical parameters to the key equipment for swivel,the hydraulic jack with continuous lifting.Because the end position of the tower is the perpendicular finally,this paper analyzes quantitatively the stability to the whole swivel,particularly the gravity to the tower is just rotating above the shaft,and then puts forward the methods of the relay twist with gantry lowering device and anti-pull system.

关 键 词：桥梁工程 斜拉桥 钢塔 液压千斤顶 安装 稳定性 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]