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Abstract

The cable installation method is a commonly employed method for the construction of large-span concrete-filled steel tube arch bridges. The cable is the main load-bearing component, and it is necessary to conduct calculation analysis and construction monitoring. By taking the Wumei River Grand Bridge as an example, this paper conducted research on the calculation method of cable force for cable installation systems. Meanwhile, it carried out cable force calculation analysis and on-site testing of the actual bridge of the 400 m suspension span cable of the upper supported concrete-filled steel tube arch bridge with a calculated span of 300 m to verify the cable force of a single cable and analyze the calculated and measured errors. The results show that the overall deviation between the calculated and measured cable force values is about 8%. As the calculated values are based on the maximum cable force state at the central span, the average deviation of the Huangping'an installation section is relatively small. In addition to calculation errors, the reverse friction force of the cable saddle at the tower during cable installation construction, temperature changes during installation, and slipping between cable fasteners and cables can also affect the results of cable force testing. After correction, the overall deviation between tested cable force values and calculated values is reduced. When the crane slides to the central span, the maximum cable force occurs at the rear cable anchor anchorage.

Publication Date

1-18-2024

DOI

10.14048/j.issn.1671-2579.2023.06.025

First Page

159

Last Page

164

Submission Date

March 2025

Reference

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