港珠澳大桥 21—31 号墩顶间高差测量实验.

In the project of height difference measurement between the top of piers with 110 m span in Hongkong-ZhuhaiMacao Bridge CB03 segment, by analyzing the principle of trigonometric leveling, the requirements of specifications and the conditions of survey area, a set of trigonometric leveling scheme for bilateral observation of total station was proposed, to clear observation methods, to determine the technical index, to simplify the operation flows. The height measurement experiment on No.21—No.31 piers was carried out, and the measurement accuracy was calculated, which proves that the scheme meets the requirements [ABSTRACT FROM AUTHOR]