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Combined set for anchoring and connecting FRP ribs

A kit and anchoring technology, which is applied to the processing of building components, building reinforcements, and building materials, can solve problems such as unstable quality, long production cycle, and shear damage of FRP tendon fibers, so as to solve the problems of difficult bending and anchoring, The effect of solving connection problems

Pending Publication Date: 2017-10-31
LIAONING UNIVERSITY OF TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the connection methods of fiber reinforcement are as follows: 1. The casing is filled with resin, cement slurry and other adhesives for connection, but the effect is not good from the actual engineering point of view, and the FRP reinforcement slips seriously; 2. The lap joint is used, but the The method should not be used in the tension area of ​​the component; 3. The mechanical clip anchor is used, but due to the large stress at the clip, it is easy to cause local fiber shear damage of the FRP tendon
[0005] So far, the bending production process of FRP bars mainly adopts the hand lay-up method, but due to the low degree of mechanization, long production cycle, and unstable quality, there has been no qualitative breakthrough.

Method used

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  • Combined set for anchoring and connecting FRP ribs
  • Combined set for anchoring and connecting FRP ribs
  • Combined set for anchoring and connecting FRP ribs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 2 As shown, the combined kit for anchoring the end of the FRP tendon (6) includes a casing (1), an adhesive for filling the casing (2), a tapered sleeve (3) set inside the casing, and a gasket ( 4), screws (5), FRP ribs (6), fastening bolts (7), and nuts (701) matching the fastening bolts (7).

[0032] The FRP tendon (6) is bonded to the tapered sleeve (3), and the left end of the tapered sleeve is provided with a slot. The FRP tendon (6) needs to extend a certain distance to the left end, and then put it into the sleeve (1), and Cover the gasket (4), fix it with the screw (5), inject the suitable adhesive (2) into the casing until the whole device is filled, wait for drying, and then screw the fastening bolt (7) into the FRP rib ( 6), fasten with the nut (701). At this time, note that the FRP tendon (6) at the thread should be wrapped with gauze dipped in adhesive for 2~3 layers, and then screw the nut (701) to prevent the FRP tendon from (6) Damage. ...

Embodiment 2

[0034] Such as image 3 , Figure 4 , Figure 5 As shown, the multi-angle connection device for FRP tendons (6) includes fastening bolts (7), and internally threaded connecting pipes (702) for multi-angle connection of FRP tendons (6).

[0035] Screw the FRP tendon (6) into the two fastening bolts (7), and then use the multi-angle connecting pipe (702) with internal thread to connect the FRP tendon (6) to tighten and anchor. At this time, pay attention to the FRP tendon at the fastening place (6) It should be wrapped with gauze dipped in adhesive for 2~3 layers, and then screwed into both ends of the connecting pipe.

Embodiment 3

[0037] Such as Figure 6 and Figure 7 As shown, the concrete structure FRP tendon (6) anchoring device includes fastening bolts (7), nuts (701) or anchor plates (703).

[0038] In the concrete structure, FRP tendons (6) are provided, and the anchoring method can adopt the anchoring method in which the anchoring body is a nut (701) or an anchor plate (703). The FRP tendons (6) are inserted into the fastening bolts (7), and fastened with nuts (701) or anchor plates (703) to achieve the best anchoring effect.

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Abstract

The invention relates to a combined set for anchoring and connecting FRP ribs. The combined set can overcome the defects of difficulty in bending and connecting and easiness in sliding of the FRP ribs in the combined manner of machinery and binding and can realize wider application of the FRP ribs in the engineering field. The combined set comprises three main structures: structure 1): a sleeve (1), an adhesive (2) for filling the sleeve, and a conical sleeve (3), a gasket (4) and a nail (5) arranged in the sleeve; structure 2): a fastening bolt (7), internal thread (8) in thread fit with the FRP ribs and a nut (701) matched with the fastening bolt (7); and 3) structure: a connecting pipe (702) for connecting the internal threads of the FRP ribs at each angle. The three main structures are mutually matched with each other and can be used for anchoring the FRP ribs with a loading end of a concrete substrate binding-sliding test device and connecting the FRP ribs. Besides, the combined set can be used as an anchoring tool for pre-stress FRP ribs.

Description

technical field [0001] The invention relates to an FRP tendon anchoring and connecting combination set. It can be applied to the anchorage of the loading end of the FRP bar and the concrete matrix bond-slip test device, and the connection of the FRP bar. In addition, it can also be used as an anchor for the prestressed FRP bar, and belongs to the engineering fields such as buildings and bridges. Background technique [0002] Fiber-reinforced composite bars (FRP bars) have been widely recognized and applied in the field of civil engineering since their inception because of their advantages of light weight, high strength, and corrosion resistance, and have gradually become a research hotspot in this field. With the release and implementation of "Fiber Reinforced Composite Material Construction Engineering Application Technical Specifications" and other relevant specifications, FRP bars have been further promoted and applied in the field of concrete structural engineering. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E04G21/12E04C5/12E04C5/16
CPCE01D21/00E04C5/12E04C5/16E04G21/12
Inventor 刘华新李劲松王学志柳根金杨剑伟韩定杰尹甜甜
Owner LIAONING UNIVERSITY OF TECHNOLOGY
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