A reinforced concrete protection structure and its construction method

By adopting a steel reinforcement protection structure consisting of frame beams, cover columns, and pre-reserved sleeves in the development of subway superstructures, the problems of corrosion and difficulty in removing pre-reserved steel reinforcements were solved, achieving effective protection and connection of steel reinforcements and reducing construction costs and time.

CN116838126BActive Publication Date: 2025-11-14GUANGZHOU METRO DESIGN & RES INST CO LTD
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Patent Information

Application Number
CN202310970461.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-08-02
Publication Date
2025-11-14
Estimated Expiration
2043-08-02

AI Technical Summary

Technical Problem

In existing technologies for subway overpass development, the reserved steel bars are prone to corrosion, and the subsequent removal of concrete is difficult, affecting the connection of the steel bars, resulting in high construction costs and long construction time.

Method used

The steel reinforcement protection structure consists of a first frame beam, a second frame beam, a cover plate column, a first longitudinal steel bar, a second longitudinal steel bar, and a reserved sleeve. By reserving steel bars on the cover plate column and setting threaded joints and sleeves, pouring concrete layers and coverings, the steel bars are protected from corrosion by humid air, and the sleeves are cleaned and connected to the steel bars in the later stage.

Benefits of technology

It effectively prevents steel bar corrosion, reduces construction costs and time, ensures the stability of steel bar connections, simplifies the concrete removal process, and is suitable for steel bar protection in subway overpass development.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to a rebar protection structure and its construction method. The rebar protection structure includes: a first frame beam, a second frame beam, a first cover plate, a second cover plate, a cover plate column, a first longitudinal rebar, a second longitudinal rebar, a first reserved sleeve, and a second reserved sleeve. This invention completes the construction of the rebar protection structure by pre-installing the first and second longitudinal rebars on the cover plate column, setting a first threaded joint and a second threaded joint at the upper ends of the first and second longitudinal rebars, and respectively fitting the first and second reserved sleeves before sequentially pouring a first concrete layer and a concrete cover. When the first and second longitudinal rebars are needed later, the concrete cover can be removed to fully expose the first and second reserved sleeves, thus preventing rebar corrosion caused by contact with humid air.
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Citation Information

Patent Citations

  • High-performance hollow floor plate and column joint

    CN109356310A

  • Reinforced concrete frame beam column secondary connecting structure and construction process thereof

    CN112779981A