混合梁斜拉桥施工索力确定方法研究  

Research of Setting the Cable-stayed Constructing Force for Hybrid Girder Cable-stayed Bridge

作　　者：周红云 熊德志 ZHOU Hong-yun XIONG De-zhi(Hubei Trading of the Construction Project Group of Companies,Wuhan 430070,China Hubei Trading Western Hubei Construction Group of Companies,Wuhan 430070,China)

机构地区：[1]湖北交投鄂东南建设项目群公司,武汉430070 [2]湖北交投鄂西建设项目群公司,武汉430070

出　　处：《建材世界》2017年第3期65-68,共4页The World of Building Materials

摘　　要：根据混合梁斜拉桥施工特点,该文提出了分次张拉到位的方法,为悬臂施工时平衡钢箱梁的架设,在钢箱梁悬臂拼装安装斜拉索时进行第一次张拉,初索力值由钢箱梁自重确定,在主跨合拢后桥面系施工前对斜拉索进行二次张拉,第二次张拉索力在初索力基础上采用正装迭代方法确定。The method of tension by several times was put forward according to the characteristic of the hybrid girder cable-stayed bridge. It meant tensioning the cable-stayed for the first time in the stage of consolidating the steel box girder,and the second time after the closure of the main span before the constructing bridge deck system.

关 键 词：分次张拉到位法 混合梁斜拉桥 施工索力 钢箱梁 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]