Abstract
The cable force measurement of cable-stayed bridges plays a vital role in their design, construction, operation, and maintenance and even throughout their entire life cycle. It is the key to ensuring the safe construction, precise forming, and long-term stable operation of cable-stayed bridges. To improve the efficiency of cable force measurement for cable-stayed bridges, this paper proposed a cable force measurement method for them based on 3D laser point cloud, referred to as the cable shape method. The cylindrical fitting method based on the random sample consensus (RANSAC ) algorithm was used to fit the segments, and the influence of the fitting length on cable force calculation was analyzed. The newly-built Zhenchuan Bridge in Kunshan was taken as the experimental object, and the cable force measurement results were compared with those of the traditional jack oil pressure method and frequency method. The results show that the cable force measurement method based on 3D laser point cloud greatly improves the efficiency of cable force measurement, and its measurement accuracy also meets the requirements. It provides a new approach for cable force measurement and online monitoring of cable-stayed bridges.
Publication Date
10-29-2026
DOI
10.14048/j.issn.1671-2579.2026.05.014
First Page
136
Last Page
144
Submission Date
October 2026
Recommended Citation
Tilang, Zhang; Kaizhe, Shang; Junsong, Xu; Tong, Zhou; Tingjie, Liu; Wen, Xiong; Xiaodong, Song; and Xiao, Wang
(2026)
"Cable force measurement method for cable-stayed bridges based on 3D laser point cloud,"
Journal of China & Foreign Highway: Vol. 46:
Iss.
5, Article 14.
DOI: 10.14048/j.issn.1671-2579.2026.05.014
Available at:
https://zwgl1980.csust.edu.cn/journal/vol46/iss5/14
Reference
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