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

doi:10.13474/j.cnki.11-2246.2024.0715

Abstract

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

CLC Number:

P228

LI Kunpeng, LI Qilin, YANG Xuefeng, SUN Hongbin, QU Shufeng. 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[J]. Bulletin of Surveying and Mapping, 2024, 0(7): 83-87.

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