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Prestressed carbon fiber-reinforced plastic plate anchorage device and manufacturing method thereof

A technology of reinforced plastics and manufacturing methods, applied in the direction of building reinforcements, structural elements, building components, etc., can solve the problems of prestress loss, sheet corrosion, loose connectors, etc., to achieve simple design, good ductility and deformation ability, Reasonable effect of force transmission

Active Publication Date: 2016-05-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under the long-term environmental erosion of this type of anchorage, the pressure pieces inside the anchorage will rust, and on the other hand, under the long-term dynamic load, the connectors inside the anchorage will loosen, resulting in loss of prestress

Method used

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  • Prestressed carbon fiber-reinforced plastic plate anchorage device and manufacturing method thereof
  • Prestressed carbon fiber-reinforced plastic plate anchorage device and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] like Figure 1-2 The production method is as follows: the CFRP sample is ground along the direction of ±45 degrees, and the surface is cleaned with acetone after grinding; the outer surface of the steel plate and the inner surface of the groove are cleaned 2-3 times with acetone. Clean all dust and impurities; apply mold release agent evenly inside the wedge-shaped groove of the steel plate, and its thickness should be kept moderate; slowly pour the prepared epoxy resin into the wedge-shaped groove of the two steel plates, Make the groove full and uniform; quickly cover one of the steel plates on the other steel plate, and the speed of this action should be agile to prevent the epoxy resin inside the steel plate groove from spilling; use tape to follow the gap between the two steel plates Wind 2-3 turns to prevent the leakage of epoxy resin inside the steel plate; use a wrench to tighten the bolts on the steel plate; use a wallpaper knife to cut off the tape at the entr...

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Abstract

The invention discloses a prestressed carbon fiber-reinforced plastic plate anchorage device and a manufacturing method thereof. The device comprises an upper steel plate and a lower steel plate and the upper and lower steel plates are used for clamping a plate. The manufacturing method comprises that multiple wedge-shaped grooves are arranged between the upper and lower steel plates, the surfaces of the wedge-shaped grooves are uniformly coated with a release agent, the grooves are filled with epoxy resin, the upper and lower steel plates are fastened through anchor bolts, the plate is slowly inserted into one end of the two steel plates from the other end along the surface groove, and after the epoxy resin is completely cured, the plate is anchored to a concrete member to be reinforced through anchor bolts. The prestressed carbon fiber-reinforced plastic plate anchorage device is prepared through the above method. The anchorage device has a simple design, reasonable force transmission, good reliability and good stability. The anchorage device has high efficiency anchoring performances. The plate does not slide or the anchorage device inner plate is not damaged even if the carbon fiber plate can be stretched until cracking.

Description

technical field [0001] The invention relates to an anchor for a prestressed carbon fiber reinforced plastic sheet and a manufacturing method thereof. Background technique [0002] When the building structure is exposed to the environment for a long time under normal use, the aging problem of the structure reduces its bearing capacity and increases cracks. Therefore, the work of strengthening and repairing the structure is imminent. Generally, the purpose of strengthening and repairing can be achieved by increasing the cross-sectional size of the components, adding necessary auxiliary components or even changing the structural system. [0003] Carbon fiber reinforced plastic sheets are gradually widely used in the field of civil engineering due to their advantages of light weight and high strength, excellent corrosion resistance, and strong fatigue resistance. The tensile strength of ordinary carbon fiber sheets can reach 2000-3000MPa, which is equivalent to about 7-10 times...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C5/12
CPCE04C5/12
Inventor 咸贵军李承高
Owner HARBIN INST OF TECH
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