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Carbon fiber reinforcing method for variable cross-section crane beam

A technology of carbon fiber reinforcement and crane girder, which is applied in the direction of building maintenance, construction, building construction, etc.

Inactive Publication Date: 2020-07-07
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the cracks of variable cross-section crane beams are not dealt with in time, it may lead to serious consequences

Method used

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  • Carbon fiber reinforcing method for variable cross-section crane beam
  • Carbon fiber reinforcing method for variable cross-section crane beam
  • Carbon fiber reinforcing method for variable cross-section crane beam

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Embodiment Construction

[0024] see Figure 1 ~ Figure 3 , a carbon fiber reinforcement method of variable cross-section crane girder of the present invention, it comprises the following steps:

[0025] 1) Grind and smooth the cracked components in the area where carbon fiber cloth CFRP needs to be pasted, and remove floating dust and dust on the surface;

[0026] 2) Cut the carbon fiber cloth according to the size of the reinforcement design, then paint the carbon fiber cloth soaked in the adhesive, fix the carbon fiber cloth on the sticking part, and then use the roller to roll in one direction along the direction of the carbon fiber cloth to eliminate its internal hollowing.

[0027] Preferably, in step 2), the carbon fiber cloth is pasted in two layers, the direction of the lower layer of carbon fiber cloth is pasted along the axial direction of the crane beam, and the direction of the pattern of the upper layer of carbon fiber cloth is perpendicular to the direction of the pattern of the lower la...

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Abstract

The invention discloses a carbon fiber reinforcing method for a variable cross-section crane beam. The method comprises the following steps that (1) polishing a cracked component to be flat in an areawhere carbon fiber cloth needs to be pasted, and removing floating dust and accumulated dust on the surface; and 2) cutting the carbon fiber cloth according to the size of a reinforcement design, then brushing the carbon fiber cloth soaked with an adhesive, fixing the carbon fiber cloth at a pasting part, and then adopting a roller to roll unidirectionally along a grain direction of the carbon fiber cloth so as to eliminate the internal hollowing. According to the carbon fiber reinforcing method for the variable cross-section crane beam, after the crane beam starts to crack, the crane beam isprolonged by a certain service life by adopting a reinforcing means, and the purpose of short-term or long-term use can be achieved.

Description

technical field [0001] The invention relates to building structures, in particular to a carbon fiber reinforcement method for variable-section crane beams. Background technique [0002] The steel slab cleaning span of a steel factory is designed with 20 right-angle sudden change-shaped steel crane beams with variable cross-sections. Support: The right-angle sudden change support is composed of upper and lower sealing plates located on the end face of the I-shaped beam and an inserting plate connected at right angles to the upper and lower sealing plates and inserted into the web. [0003] During the precise spot inspection of the crane beam system, it was found that there were structural defects in the structural components and connection nodes, especially at the joints between the four crane beam insertion plates and the sealing plates on the X1 axis, a total of 5 cracks, one of which penetrated, and a single The maximum length of the crack is 600mm. If the cracks in vari...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G23/02
CPCE04G23/0218
Inventor 黄建东龚年生宋珣
Owner BAOSHAN IRON & STEEL CO LTD
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