特大跨径悬索桥主缆锚固系统安装定位技术研究

作者：柳寅峰¹,李桂华²

作者简介：

柳寅峰, 助理工程师, E⁃mail: 201309020009 @ hhu.edu. cn

作者单位：

1. 中化地质矿山总局浙江地质勘查院,浙江杭州 310000; 2. 河海大学地球科学与工程学院,江苏南京 211100

基金项目：

∗中央高校基本科研业务费专项资金资助(B210205013)

摘要：

锚固系统定位安装是特大跨径悬索桥施工中的重要工序,对测量精度和可靠性要求高. 结合南京仙新路过江通道跨江主桥锚固系统定位安装工程,推导了空间三维锚固系统局部坐标系与桥轴施工坐标系的转换关系,实现了两者之间的直接转换,并根据安装精度建立安装定位专用精密控制网. 基于高精度智能全站仪的精密测量方法和专用测量棱镜设备及测量精度估算,采用全站仪极坐标法锚固系统安装定位,在平面和高程方向上的精度可达到 0. 81,1. 66mm,满足安装定位需求.

关键词：悬索桥;锚固;定位;安装

English：

The anchorage system positioning and installation is an important process in the construction ofsuper⁃long⁃span suspension bridges, which requires extremely high measurement accuracy and reliability.Combined with the positioning and installation project of the anchorage system of the main bridge of thecross⁃river channel of Xianxin Road, Nanjing, the conversion relationship between the local coordinatesystem of the three⁃dimensional anchorage system and the construction coordinate system of the bridgeshaft is deduced, and the direct conversion between the two is realized. A special precision controlnetwork for installation and positioning is established according to the installation accuracy. The polarcoordinate method of the total station was used to install and locate the anchoring system based on theprecision measurement method of the high⁃precision intelligent total station and the special measurementprism equipment and measurement accuracy estimation. The accuracy in the plane and elevation directioncan reach 0. 81, 1. 66mm, respectively, which meets the needs of installation and positioning.

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应用研究 > 2025年 第卷 第11期