浅谈梅州城区广州大桥主塔索道管定位技术

Abstract Installation and positioning of the cable duct has been the difficulty in construction of the cable-stayed main tower and themain beam. The accuracy will directly affect the force status of the cable thus affecting the quality of the project and the useful life of thecable-stayed. According to the project of the Guangzhou cable-stayed bridge in Meizhou city this thesis outlines the installation andpositioning technology of the cable duct in cable-stayed bridge by improving the traditional positioning methods of the cable ducts.院斜拉桥 桥轴坐标系 定位支架 索道管粗定位 索道管精定位Key words cable-stayed bridge bridge axis coordinate system positioning bracket cable duct's sketchy positioning cable duct's exactpositioning中图分类号院U448 文献标识码院A 文章编号院1006-4311（2014）01-0106-020 引言梅州城区广州大桥位于广东省梅州市东南部，南北向横跨梅江，是连接梅州市主城区与芹黄规划区的一条交通性主干道。主桥为139m+106m 独塔单索面斜拉桥，主跨跨径139m， 主塔高度为66.7m，塔上索道管最长的为4.323m。全桥斜拉为单索面（双排索） 辐射形，拉索纵向位于同一个平面内，主塔共84 根索道管。