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Anti-corrosion reinforcing structure for embedded type precast beam

A technology for strengthening structures and prefabricated beams, applied in building construction, building maintenance, construction, etc., can solve problems such as shortened service life, reduced structural durability, and reduced structural bearing capacity, achieving high practical value and reducing the possibility of cracks , the effect of prolonging the service life

Active Publication Date: 2016-11-09
舟山市宏达交通工程有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that cracks in reinforced concrete prefabricated beams in the prior art tend to cause internal steel bars to corrode under the erosion of external water, air and salt spray, so that the structural bearing capacity is significantly reduced, and the structural durability is reduced, resulting in the use of To solve the problem of shortened life, provide an embedded prefabricated beam anti-corrosion reinforcement structure, which has the function of automatically filling cracks after cracks appear, thus greatly extending the service life of prefabricated beams

Method used

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  • Anti-corrosion reinforcing structure for embedded type precast beam
  • Anti-corrosion reinforcing structure for embedded type precast beam
  • Anti-corrosion reinforcing structure for embedded type precast beam

Examples

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Effect test

Embodiment 1

[0024] exist figure 1 In the shown embodiment 1, an embedded prefabricated beam anti-corrosion reinforcement structure, the prefabricated beam beam body includes concrete and steel bars arranged in the concrete, and the steel bars include the upper main steel bar 1 located at the upper part of the prefabricated beam cross section and The lower main reinforcement 2 located at the lower part of the prefabricated beam cross section, the concrete 3 of the prefabricated beam body is embedded with a joint filler releaser 4, and the distribution density of the joint filler releasers near the upper and lower parts of the prefabricated beam cross section is greater than that near the prefabricated beam cross section. Distribution density of caulk dispensers in the middle of the section. The caulk releaser is a cylindrical structure (see figure 2 ), the cylinder is made of stainless steel, the outer peripheral surface of the cylinder is provided with a textured structure (not shown in...

Embodiment 2

[0026] exist Figure 4 In the shown embodiment 2, FRP reinforcing bars 12 are provided above the upper main reinforcement of the prefabricated beam and below the lower main reinforcement, and the FRP reinforcing ribs are fixed on the outside of the stirrup 13, and are misplaced with the main reinforcement of the prefabricated beam. The concrete of embodiment 2 is also mixed with anti-tension nail 9, and described anti-tension nail adopts high-strength steel to make, and the two ends of anti-tension nail are provided with end ring 10 (see Figure 5 ), the ring planes of the end rings at both ends of the tensile studs are perpendicular to each other, the distribution density of the tensile studs near the lower part of the prefabricated beam cross section is greater than that near the middle of the prefabricated beam cross section, and the tensile studs near the upper part The distribution density of the nails is less than that near the middle of the prefabricated beam cross-sectio...

Embodiment 3

[0028] exist Image 6 In the shown embodiment 3, non-metallic fibers 11 are infiltrated in the concrete near the upper and lower sides of the prefabricated beam, and the non-metallic fibers are plastic steel fibers, polypropylene fibers or polyacrylonitrile fibers, and the non-metallic tensile fibers are The distribution position is located above the main reinforcement in the upper part of the prefabricated beam cross-section and below the main reinforcement in the lower part of the prefabricated beam cross-section. The volume of the caulking agent releaser of this embodiment is 15 cubic centimeters, and the fill volume of the crack filling agent in the caulking agent releaser is 10 milliliters, and the described crack filling agent is an adhesive, and the described adhesive has a yellow color , all the other are identical with embodiment 1 or embodiment 2.

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Abstract

The invention discloses an anti-corrosion reinforcing structure for an embedded type precast beam. A precast beam body comprises concrete and steel bars arranged in the concrete. Joint mixture releasing devices are embedded in the concrete of the precast beam body, and joint mixtures are packaged in the joint mixture releasing devices. When cracks appear in the precast beam, the joint mixture releasing devices crack, and the cracks are filled with the joint mixtures. By means of the anti-corrosion reinforcing structure, the problem that the service life of a precast beam is shortened due to the fact that internal steel bars are corroded easily after cracks appear in the reinforced concrete precast beam in the prior art is effectively solved; the anti-corrosion reinforcing structure has an automatic crack filling function after cracks appear in the precast beam, meanwhile, the possibility of crack occurrence in the precast beam is greatly lowered through the reinforcing structure, and therefore the service life of the precast beam is greatly prolonged; and the anti-corrosion reinforcing structure has high practical value.

Description

technical field [0001] The invention relates to the technical fields of buildings, bridges and port engineering, in particular to an embedded prefabricated beam anti-corrosion reinforcement structure. Background technique [0002] Ordinary reinforced concrete prefabricated beams widely used in bridge and port engineering fields are easy to crack due to the low tensile strength of ordinary concrete materials, and the concrete in the tension area of ​​prefabricated beams will also crack when the load is much lower than that used and the width will be wider. The form of the main crack appears, and the excessive crack not only affects the stiffness of the beam and column, affects the normal use of the prefabricated beam structure, but also causes unsafe psychological impact on people. At the same time, for reinforced concrete prefabricated beams in harsh environments, cracks easily cause internal steel bars to corrode under the erosion of external water, air and salt spray, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G23/02
CPCE04G23/0203E04G2023/0251
Inventor 方贤飞王舟军陈君刘樑陈波海陈安轮
Owner 舟山市宏达交通工程有限责任公司
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