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Method for reinforcing web members of reinforced concrete truss

A reinforced concrete and concrete technology, applied in building maintenance, construction, building construction, etc., can solve the problems of inconvenient concrete repair and the inability to ensure the compactness of newly poured concrete, and achieve the effect of ensuring compactness

Inactive Publication Date: 2012-07-04
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the small cross-sectional area of ​​the web, it is inconvenient to use the traditional formwork method for concrete repair. Even if the small area formwork method is used for concrete repair, the compactness of the newly poured concrete cannot be guaranteed.

Method used

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  • Method for reinforcing web members of reinforced concrete truss
  • Method for reinforcing web members of reinforced concrete truss
  • Method for reinforcing web members of reinforced concrete truss

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] An embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0013] The method for strengthening the reinforced concrete truss webs of the present invention: firstly, the damaged concrete of the reinforced concrete truss webs 1 is cleaned, and the corroded steel bars are derusted and rust inhibitors are applied, and then the concrete truss webs 1 are fitted with PVC pipe 2 with a slender mouth, and use wooden boards to temporarily block the opening, then pour resin concrete into the PVC pipe, and use CFRP (carbon fiber cloth) or steel plate hoop 3 to tighten the PVC pipe 2, so that the inside of the PVC pipe The poured resin concrete 4 is compacted and overflowed to achieve the purpose of self-extrusion and compaction of the resin concrete 4. After the resin concrete 4 is solidified, the wooden board temporarily blocked at the opening can be removed.

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Abstract

A method for reinforcing web members of a reinforced concrete truss includes: cleaning damaged concrete of the web members of the reinforced concrete truss, removing rust on rusted reinforcing bars and applying anti-rust agent; sleeving a PVC (polyvinyl chloride) pipe with an elongated slit on each of the web members of the reinforced concrete truss and plugging the slit by a wooden plate; pouring resin concrete into the PVC pipes, hooping the PVC pipes with carbon fiber fabrics or steel plate hoops so that the resin concrete can be spilled and the purpose that the resin concrete can be extruded to be compact automatically is achieved; and removing the wooden plates at the slits after the resin concrete is solidified. The method for reinforcing the web members of the reinforced concrete truss by the resin concrete filled in the PVC pipes is simple, convenient, efficient and capable of repairing and reinforcing rusted reinforcing bars and seriously-damaged concrete of the web members of the reinforced concrete truss.

Description

technical field [0001] The invention relates to a method for strengthening the web of a reinforced concrete truss, and is especially suitable for strengthening the web of the reinforced concrete truss in the coal mine ground industrial environment when the concrete is severely damaged and the steel bars are corroded. Background technique [0002] Due to the special ground industrial environment of coal mines, the reinforced concrete truss webs in coal mines are seriously damaged due to the expansion of steel bars, and the corrosion rate of steel bars is accelerated, which seriously affects the safety of industrial production. For the reinforcement of such components, the steel bars are generally derusted first, then the seriously damaged concrete is repaired, and finally the corresponding maintenance is carried out. However, due to the small cross-sectional area of ​​the web, it is inconvenient to use the traditional formwork for concrete repair. Even if the concrete repai...

Claims

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Application Information

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IPC IPC(8): E04G23/02
Inventor 吕恒林周淑春谢海舰吴元周冯伟
Owner CHINA UNIV OF MINING & TECH
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