空间主缆悬索桥上部构造施工测量关键技术  

Key Technologies of the Construction Surveying of Superstructure of Spatial Main Cable Suspension Bridge

作　　者：杜传鹏[1] 谭曦光 DU Chuanpeng;TAN Xiguang(Sichuan Road&Bridge(Group)Co.,Ltd.,Chengdu 610041,China)

机构地区：[1]四川公路桥梁建设集团有限公司,四川成都610041

出　　处：《测绘与空间地理信息》2025年第1期218-221,共4页Geomatics & Spatial Information Technology

摘　　要：大跨空间主缆悬索桥施工流程复杂,测量精度要求高,以已建成的挪威哈罗格兰德大桥为例,对其上部结构施工测量关键技术中的塔锚联测、猫道线形调整、基准索股调整、索夹放样等测量技术进行研究。塔锚联测综合运用全站仪自由设站、后方交会、对向三角高程测量等方法,并考虑地球曲率影响,可有效指导后续施工。猫道线形调整采用全站仪自动放样功能,提升施工效率。基准索股调整,采用单向三角高程测量,并精确计算大气折光系数,索股线形精度高。索夹放样采用距离差分法,并用绝对坐标法复核,实现精确放样。The construction process of large-span main cable suspension bridges is complex and requires high measurement accuracy.In this paper,the key technologies of the construction surveying of superstructure of spatial main cable suspension bridge,including tower and anchorage joint measurement,catwalk alignment adjustment;datum strand adjustment,and cable clamp setting out are introduced with the example of Norwegian Halogaland Bridge.The tower and anchorage joint measurement involves the whole construction process of superstructure.It uses the method of free station of total station,space resection,opposite trigonometric elevation measurement,and so on,considers the influence of earth curvature on the span,and can effectively guide subsequent construction.The automatic setting out function of the total station can quickly realize the alignment adjustment of the catwalk and improve the construction efficiency.The measurement accuracy of the datum strand is improved by using unidirectional trigonometric elevation measurement and calculating the atmospheric refraction coefficient on the measurement path accurately.The cable clamp setting out adopts the distance difference method,and the absolute coordinate method is used to check the exact position and its lateral deflection angle,so as to realize accurate setting out.

关 键 词：空间主缆悬索桥 塔锚联测 猫道、主缆线形调整 索夹放样 

分 类 号：P25[天文地球—测绘科学与技术] TB22[天文地球—大地测量学与测量工程]