测绘通报 ›› 2024, Vol. 0 ›› Issue (7): 83-87.doi: 10.13474/j.cnki.11-2246.2024.0715

• 学术研究 • 上一篇    下一篇

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

李鲲鹏1,2, 李麒麟1,2, 杨雪峰1,2, 孙洪斌3, 渠述锋3   

  1. 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
  • 收稿日期:2023-12-05 发布日期:2024-08-02
  • 通讯作者: 杨雪峰。E-mail:yang7761135@foxmail.com
  • 作者简介:李鲲鹏(1996—),男,硕士生,研究方向为精密工程测量。E-mail:1578304332@qq.com
  • 基金资助:
    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)

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

LI Kunpeng1,2, LI Qilin1,2, YANG Xuefeng1,2, SUN Hongbin3, QU Shufeng3   

  1. 1. Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China;
    2. State-Province Joint Engineering Laboratory in Spatial Information Technology for High-Speed Railway Safety, Chengdu 611756, China;
    3. Shandong Railway Investment Holding Group Co., Ltd., Jinan 250000, China
  • Received:2023-12-05 Published:2024-08-02

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。

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

Abstract: 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 CPⅢ coordinates 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 CPⅢ point 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 CPⅢ point plane coordinates based on GNSS. In the case of observation duration of 30 min, it can meet the requirements of CPⅢ planar network measurement accuracy in the construction of base plate and track plate.

Key words: GNSS static relative positioning, long span cable-stayed bridge, long continuous beam, CPⅢ planar network, quick measurement method

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