基于GNSS的五塔连续斜拉桥主梁上CPⅢ平面网快速测量方法试验研究及应用  

Experimental research and application of rapid measurement method of CPⅢplane network on main beam of five-tower continuous cable-stayed bridge based on GNSS

作　　者：李鲲鹏 李麒麟[1,2] 杨雪峰 孙洪斌 渠述锋[3] LI Kunpeng;LI Qilin;YANG Xuefeng;SUN Hongbin;QU Shufeng(Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 611756,China;State-Province Joint Engineering Laboratory in Spatial Information Technology for High-Speed Railway Safety,Chengdu 611756,China;Shandong Railway Investment Holding Group Co.,Ltd.,Jinan 250000,China)

机构地区：[1]西南交通大学地球科学与环境工程学院,四川成都611756 [2]西南交通大学高速铁路运营安全空间信息技术国家地方联合工程实验室,四川成都611756 [3]山东铁路投资控股集团有限公司,山东济南250000

出　　处：《测绘通报》2024年第7期83-87,共5页Bulletin of Surveying and Mapping

基　　金：长江学者和创新团队发展计划(PCSIRT);南昌局集团科技研究开发计划(202160);山东省路桥集团有限公司科研项目(R110122H01161);中央高校基本科研业务费-科技创新项目(2682023CX013)。

摘　　要：大跨度桥梁的长大连续梁会随着温度的变化,产生较大的纵向和竖向位移,导致连续梁桥上CPⅢ点坐标存在多值性,设站精度无法满足高铁对轨道板测量相关精度要求。本文提出了一种基于GNSS静态测量的连续梁上CPⅢ点平面坐标快速测量新方法,并依托郑济高铁长清黄河特大桥,设计了实际测量试验,并对新方法的可行性进行了验证。试验结果表明,这种基于GNSS的CPⅢ点平面坐标快速测量方法,在观测时长为30 min的情况下就能达到大跨度桥梁上底座板、轨道板等施工对CPⅢ平面网相关测量精度的要求。The long continuous beam of the long-span bridge will produce large longitudinal and vertical displacement with the change of temperature,resulting in the multi-value of the CPⅢcoordinates on the continuous beam bridge,and the station accuracy cannot meet the relevant accuracy requirements of the high-speed railway track plate measurement.This paper proposes a new method for rapid measurement of CPⅢpoint plane coordinates on continuous beams based on GNSS static measurement,and a practical measurement experiment is designed based on the Changqing Yellow River Bridge of Zhengzhou-Jinan high-speed Railway to verify the feasibility of the new method.The experimental results show that this method for rapid measurement of CPⅢpoint plane coordinates based on GNSS.In the case of observation duration of 30 min,it can meet the requirements of CPⅢplanar network measurement accuracy in the construction of base plate and track plate.

关 键 词：GNSS静态相对定位 大跨斜拉桥 长大连续梁 CPⅢ平面网 快速测量方法 

分 类 号：P228[天文地球—大地测量学与测量工程]