Steel tube confined reinforced concrete column anti-void construction system and method of use thereof

CN116220204BActive Publication Date: 2026-07-07CHINA FIRST METALLURGICAL GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA FIRST METALLURGICAL GROUP
Filing Date
2023-01-09
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

During the construction of steel-tube confined concrete columns, the thin-walled steel plate is prone to voids when pouring self-compacting concrete, which affects the construction quality. Existing expansion bolts and pre-embedded anchors are difficult to install and connect effectively in steel-tube confined concrete columns.

Method used

An expansion bolt assembly and clamp assembly are used together. The anchor bolt is fixed to the steel pipe wall by the expansion claw. The clamp assembly is designed as a hinged locking structure and has a pre-set installation hole on the steel pipe wall to ensure effective connection between the anchor rod and the concrete.

Benefits of technology

This effectively solved the problem of concrete column voids, improved the efficiency of anchor bolt installation and connection, ensured good contact and connection between concrete and steel pipe columns, prevented steel pipe wall rebound, and improved construction quality.

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Abstract

The application discloses a kind of steel pipe confined reinforced concrete column anti-void construction system and its use method, comprising: expansion connecting anchor bolt assembly, the expansion connecting anchor bolt assembly includes anchor bolt part and nut part;The anchor bolt part includes anchor bolt rod, is set to the expansion claw for being supported and positioned by back tension expansion outside the rear end of the anchor bolt rod, is set to the internal thread hole in the rear end of the anchor bolt rod;The nut part includes connecting section, is set to the connecting screw rod for being threadedly connected with the internal thread hole at the front end of connecting section, is set to the nut at the rear end of connecting section;Hoop assembly;Through fixed anchor rod is fixed on the steel pipe wall at hoop face, subsequent pouring concrete can be effectively connected with preset anchor rod, ensure that anchor rod can effectively back tension to steel pipe wall after hoop device is subsequently removed, effectively solve the technical problem of concrete column void.
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Citation Information

Patent Citations

  • Positioning and adjusting device for concrete embedded anchor bolts

    CN113073674A

  • One-way bolt

    CN114017429A

  • Take off hollow steel tube concrete strengthening structure

    CN207863514U

  • Hoop device

    CN216971812U