A flexible assembled arch steel platform for CFST arch bridges

By using detachable clamping assemblies to hold the arch rib steel pipes, the problem of damage to the appearance of the arch rib steel pipes during the installation of the arch bridge's arch top platform was solved, thus improving stability and economy.

CN224281030UActive Publication Date: 2026-05-26GUANGXI ROAD & BRIDGE ENG GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGXI ROAD & BRIDGE ENG GRP CO LTD
Filing Date
2025-04-18
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

The installation of the vacuum-assisted system on the existing CFST arch bridge's arch top platform caused damage to the appearance of the arch rib steel pipes, and high-altitude repairs were required after dismantling, increasing the workload and economic costs of the project.

Method used

The clamp assembly includes annular stirrups and annular plates, which are detachably connected by locking nuts to clamp the arch rib steel pipe. The platform assembly is supported by the clamp assembly, avoiding the need to weld additional columns and reducing steel consumption and platform weight.

Benefits of technology

This avoids damage to the appearance of the arched rib steel pipe and the need for high-altitude repairs, improves connection stability, and reduces workload and economic costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model provides a flexible, modular arch roof steel platform for CFST arch bridges, including a clamp assembly and a platform assembly. The clamp assembly includes annular stirrups, annular plates, a retaining plate, a support plate, and a base plate. The annular stirrups have threaded portions at both ends. The annular plates are detachably connected to the top of the annular stirrups via locking nuts threaded to the threaded portions, forming a clamping space for holding the arch rib steel pipe. The retaining plate is fixed to the inner side of the annular plate, and the support plate is fixed to the top of the annular plate and / or the retaining plate. The base plate is located outside the clamping space and is fixedly connected to the support plate. The platform assembly is mounted on the base plate. During use, it does not damage the appearance of the arch rib steel pipe, and after dismantling, there is no need for high-altitude repairs of the arch rib, thus reducing workload.
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