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Bond type anchorage and anchoring method for anchoring fibre reinforced plastic reinforcement or bracing cable

A fiber-reinforced plastic and bonded technology, applied to structural elements, building reinforcements, building components, etc., can solve problems such as poor thermal stability, long anchorage length, excessive creep of bonding medium, etc., to achieve production and Simple maintenance, reduced anchorage length and low cost

Active Publication Date: 2009-06-03
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the fiber-reinforced plastic (FRP) tendons or cable-bonded anchors have shortcomings such as excessively long anchorage length caused by low bonding strength of the bonding medium, or excessive creep of the bonding medium, and poor thermal stability. , so it is necessary to provide a bonded anchor device with the characteristics of high strength and good durability and an anchoring method using the corresponding anchor

Method used

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  • Bond type anchorage and anchoring method for anchoring fibre reinforced plastic reinforcement or bracing cable
  • Bond type anchorage and anchoring method for anchoring fibre reinforced plastic reinforcement or bracing cable
  • Bond type anchorage and anchoring method for anchoring fibre reinforced plastic reinforcement or bracing cable

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Effect test

Embodiment 1

[0024] Embodiment 1: As shown in Figures 1 to 3, the bonded anchor for anchoring fiber-reinforced plastic tendons or cables of the present invention has a cylindrical sleeve with an end cap 1 at one end and a positioning hole 11 at the other end 3. The sleeve 3 is a steel sleeve, which has a tapered inner cavity 4 and its smaller-diameter end communicates with the positioning hole 11. The surface of the tapered inner cavity 4 is preferably made rough; the cylinder body The outer circumference of the sleeve 3 with grouting holes 2 and vent holes 6 respectively has external threads and nuts 5; the grouting holes 2 and vent holes 6 are all connected to the tapered inner cavity 4, and the fiber reinforced plastic A tendon or cable 8 passes through the positioning hole 11 and one end thereof is located in the tapered inner cavity 4, and the one end of the fiber reinforced plastic tendon or cable 8 in the tapered inner cavity 4 is split It is divided into two bifurcated petals, and ...

Embodiment 2

[0026] Embodiment 2: As shown in Figure 4, the anchoring method of the present invention is: a. The anchorage structure (referring to Figure 4) that adopts: this anchorage has the cylinder that one end is provided with end cap 1 and the other end has positioning hole 11 Shaped sleeve 3, the sleeve 3 has a tapered inner cavity 4 and one end with a smaller diameter communicates with the positioning hole 11, and the two ends of the cylinder are respectively provided with the sleeve 3 of the grouting hole 2 and the exhaust hole 6 There are external threads on the outer periphery and nuts 5 are installed, the grouting holes 2 and the exhaust holes 6 are connected with the conical inner cavity 4, and there are through holes 13 on the end cover 1;

[0027] b. Anchoring method: first pass the fiber reinforced plastic tendon or cable 8 through the through hole 13 of the end cover 1 and through the tapered inner cavity 4 of the steel sleeve 3, and then pass through the positioning hole 1...

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Abstract

The present invention relates to an adhesive anchoring unit and an anchoring method for anchoring fiber reinforcement plastic bar or cable, an end cover is arranged at one end of the anchoring unit and a sleeve with a locating hole is arranged at the other end of the anchoring unit. An internal cone chamber is arranged in the sleeve, and a nut is arranged surrounding the sleeve provided with a mortar filling hole and a ventilation hole. The fiber reinforcement plastic bar or cable passes through the locating hole and one end in the internal cone chamber was cut into two halves, which are inserted with a wedge to become a wedge form. A starting section of the half of one end of the bar or cable is coated with a retaining ring and the section passing through the locating hole is coated with a thin wall aluminum sleeve tube and active powder concrete is filled in the internal cone chamber of the sleeve. The method is described as follows: after the bar or cable shaft passes through the sleeve of the anchoring unit, a pretension is required on the sleeve, and the active powder concrete is added into the sleeve. The present invention improves anchoring performances of the adhesive media and the FRP bar, therefore, the anchoring length is reduced, the structure is simple, the use is convenient, the present invention is safe and reliable, the cost is low and the PRC manufacturing and maintenance is easy.

Description

technical field [0001] The invention relates to a bonded anchor and an anchoring method for anchoring fiber-reinforced plastic tendons or cables. Background technique [0002] At present, the fiber-reinforced plastic (FRP) tendons or cable-bonded anchors have shortcomings such as excessively long anchorage length caused by low bonding strength of the bonding medium, or excessive creep of the bonding medium, and poor thermal stability. Therefore, it is necessary to provide a bonded anchor device with the characteristics of high strength and good durability and an anchoring method using the corresponding anchor. Contents of the invention [0003] The technical problem to be solved by the present invention is to propose a bonded anchor and anchoring method for anchoring fiber reinforced plastic tendons or cables, aiming at the deficiencies of the prior art, and to improve the bonded medium through specific technical measures. The anchorage performance with FRP bars and the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C5/12
Inventor 方志蒋田勇
Owner HUNAN UNIV
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