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Anchoring device adopting spiral slotting clamping piece for prestressed FRP (Fiber Reinforced Polymer) cables

A composite material and anchoring device technology, applied in building reinforcements, structural elements, building components, etc., can solve the problems of uneven deformation, difficult to withdraw anchors, low anchoring efficiency, etc., to achieve uniform deformation, easy processing and use, and anchoring Efficient effect

Inactive Publication Date: 2013-10-16
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007]Technical problem: In order to solve the situation that the existing FRP cable anchoring device cannot be reused, the deformation is uneven, the anchoring efficiency is low, and the anchor is not easy to withdraw, the present invention provides a The deformation of each part is uniform under the action of extrusion force, and the reusable prestressed fiber reinforced composite cable anchoring device adopts spiral slotted clips

Method used

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  • Anchoring device adopting spiral slotting clamping piece for prestressed FRP (Fiber Reinforced Polymer) cables
  • Anchoring device adopting spiral slotting clamping piece for prestressed FRP (Fiber Reinforced Polymer) cables
  • Anchoring device adopting spiral slotting clamping piece for prestressed FRP (Fiber Reinforced Polymer) cables

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Anchorage of a single fiber reinforced composite cable

[0034] The anchoring process of a single composite cable of the present invention is as follows: the fiber reinforced composite cable 3 is passed through the structure and the anchor block 1, the composite cable anchor clip 2 is placed on the cable and pushed into the hole of the anchor block 1, Put the auxiliary compression ring on the end of the clip, use the jack to pull the fiber reinforced composite material cable 3, and at the same time push the composite cable anchor clip 2 into the anchor block 1, tighten the compression ring after reaching the required prestress, and unload When the pulling force of the jack is dropped, the fiber-reinforced composite cable 3 retracts and tightens under the prestress, driving the composite cable anchoring clip 2 so that the clip 2 and the anchor block 1 are tightly combined. image 3 It is a schematic diagram of the interaction between the fiber-reinforced compo...

Embodiment 2

[0035] Example 2: Three fiber reinforced composite cables anchored in a rectangular anchor block

[0036] Rectangular anchor blocks such as Figure 6 As shown, the anchoring method of each FRP cable (fiber-reinforced composite material cable) is the same as that described in the above example, and the three anchoring diagrams are as follows Figure 7 shown.

Embodiment 3

[0037] Example 3: Three fiber reinforced composite cables anchored in a ring anchor block

[0038] Ring anchor blocks such as Figure 8 As shown, the anchoring method of each FRP cable is the same as that described in the above example.

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Abstract

The invention discloses an anchoring device adopting spiral slotting clamping pieces for prestressed FRP (Fiber Reinforced Polymer) cables. The anchor device comprises an anchor block, polymer cable anchor clamping pieces arranged inside openings of the anchor block and polymer cables arranged inside the polymer cable anchor clamping pieces, wherein each polymer cable anchor clamping piece adopts an integral structure and is provided with two ends extending out of each opening of the anchor block; n spiral grooves are formed in the main body of the polymer cable anchor clamping piece in the vertical direction. According to the invention, the anchoring device is applied to the anchoring of the FRP cables, the clamping pieces are adopted to clamp while linear grooves in the traditional anchor clamping pieces are designed and changed into curve grooves, and each elastic groove turns for an angle of 90 degrees on the projection of the cross section of each clamping piece from the top of each clamping piece to the bottom of each clamping piece, so that the anchor device has the advantages of the capability of reuse, high anchoring efficiency and the like.

Description

[0001] technical field [0002] The invention relates to a clamping and anchoring device applied to prestressed FRP cables. [0003] Background technique [0004] FRP reinforcement is made of several strands of continuous fiber bundles that are impregnated and cured with supporting resins according to a specific process (Fiber Reinforced Polymer in English, abbreviated as FRP). The reinforcement is divided into CFRP, GFRP, AFRP, BFRP, etc. FRP material has light weight, high tensile strength, corrosion resistance and other properties, and it can produce better benefits when used in cable structures. [0005] The use of FRP materials is gradually being promoted. To give full play to the characteristics of high strength and corrosion resistance of FRP cables, an efficient clamping anchor must be supplemented. The existing prestressed FRP cable anchoring device mainly adopts the method of pouring the bonding body. After the FRP cable is bundled, it is inserted into the sleeve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C5/12
Inventor 张继文宋守坛
Owner SOUTHEAST UNIV
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