FRP plate anchoring device and anchoring method

A technology of FRP boards and anchoring devices, which is applied in construction, building maintenance, building reinforcements, etc., can solve the problems of inability to effectively anchor FRP wide and thick boards, and FRP boards are crushed and slipped, so as to improve anchoring efficiency and avoid The effect of slip-out damage and reliable anchoring performance

Active Publication Date: 2021-11-02
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problems that the existing prestressed FRP plate clamp anchors cannot effectively anchor FRP wide and thick plates, and the FRP plate is prone to crushing and slipping, and proposes a layered variable stiffness anchoring system for FRP thick plates

Method used

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  • FRP plate anchoring device and anchoring method
  • FRP plate anchoring device and anchoring method
  • FRP plate anchoring device and anchoring method

Examples

Experimental program
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Embodiment

[0065] like figure 1 , figure 2 , Figure 4 Indicated.

[0066] The steps of the FRP board anchorage method are as follows:

[0067] BFRP with a size of 100 (width) × 5 (thick) mm from the intermediate seam is 2 layers, the cut length is 100 mm;

[0068] Insert the layered BFRP plate into the anchor plate to ensure that the anchor board is large and the open end is closer to the BFRP board;

[0069] Push the aluminum alloy wedge top block into a layered BFRP plate and bonded using an epoxy resin;

[0070] After the resin is completely cured, the upper and lower clamps are placed on both sides of the BFRP plates embedded in the wedge top block 6 into the anchor plate. When pushing, you can use the jack to push the shifting chips, the top thrust is the same as the calculated FRP plate extreme tension. The finite element simulation results show that the pull force is 624KN when the BFRP thick plate is broken. The maximum forward extrusion stress of the anchor internal FRP plate is 85....

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Abstract

The invention discloses an FRP plate anchoring device and anchoring method. The anchoring device comprises an anchor plate, a wedge-shaped block, clamping sheets and a metal film; the anchor plate is provided with an anchoring channel with the cross section being in the shape of an isosceles trapezoid; the wedge-shaped block is filled between the layers of the anchoring end of the FRP plate; the clamping sheets are filled between the upper and lower surfaces of the FRP plate and the anchoring channel; the clamping sheets have different rigidities in the width direction of the FRP plate, and the distribution rule of the rigidities is that the rigidities are linearly or stepwise reduced from the middle to the two ends; and the metal film is fixed to the face, making contact with the anchor plate, of the clamping sheets so as to reduce friction between the composite clamping sheets and the metal anchor plate. According to the layered variable-stiffness anchoring system for the FRP thick plate, anchoring of the FRP thick plate can be effectively and reliably achieved, the tensile strength of the FRP batten is fully exerted, and the FRP batten is made to be subjected to ideal burst-off type damage.

Description

Technical field [0001] The FRP thickness of the present invention belongs to the inventory of the composite anchoring, and in particular, to the layered macroform anchoring method. Background technique [0002] With the development of the economy, more and more build structures need to be reinforced to meet new use requirements, prestressed FRP slats have a good engineering reinforcement method. The exterior of the FRP board is applied to the surface of the reinforced structure can effectively improve the crack load, yield load, and limit load, reduce the deflection, and improve the efficiency of the FRP material. However, since the tensile strength of the FRP material is high, the lateral pressure and shear ability is weak, so the anchor of the FRP material is a difficult problem. [0003] In the current reinforcement engineering, the prestressed FRP sheet is used to reinforcement, but in some large reinforcement projects, large prestressing is often provided, and the number of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G23/02E04C5/12E04C5/08
CPCE04G23/0218E04C5/122E04G2023/0251
Inventor 汪昕常鑫泉吴智深李元琪刘长源
Owner SOUTHEAST UNIV
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