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Bond-type anchorage for FRP (Fiber Reinforced Plastic) rib and implementation method thereof

A bonded anchorage technology, applied in the direction of structural elements, building materials, building components, etc., can solve the problems of large anchorage length, damage of tendons, and stress concentration in the hoop direction, so as to ensure the safety of implementation, The effect of low material requirement and low manufacturing cost

Inactive Publication Date: 2015-07-22
TAIZHOU INST OF SCI &TECH NUST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Clamping anchors are prone to hoop stress concentration, resulting in damage to the reinforcement and low anchoring efficiency
The structure of the composite anchorage is complex, the requirements for the material of the anchorage are high, the cost is increased, and it is not suitable for large-scale production and application, and the anchorage length is large, and the anchorage efficiency is low, which is not conducive to the increase of the tonnage of the anchor barrel

Method used

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  • Bond-type anchorage for FRP (Fiber Reinforced Plastic) rib and implementation method thereof
  • Bond-type anchorage for FRP (Fiber Reinforced Plastic) rib and implementation method thereof
  • Bond-type anchorage for FRP (Fiber Reinforced Plastic) rib and implementation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] When the number of the sliding anchor tube 4 and the number of the fixed anchor tube 5 is one, the implementation method of the present invention is as follows.

[0031] (1) Connect the fixed anchor tube 5 and the nut 7 through the first thread 6-1, then block the FRP reinforcement from the first end 1-1, slide the anchor tube 4, and plug the second end 1-2, The nut 7, the fixed anchor tube 5, and the third end block 1-3 are sequentially passed through.

[0032] (2) Fix the first end plug 1-1 and the second end plug 1-2 at both ends of the sliding anchor cylinder 4 .

[0033] (3) Connect the sliding anchor tube 4 and the nut 7 through the first thread 6-1, so that the sliding anchor tube 4 and the fixed anchor tube 5 are fixedly connected through the nut 7, and the second end plug 1-2 is connected with the fixed One end of the anchor tube 5 matches, and the FRP reinforcement is positioned.

[0034] (4), fix the third end plug 1-3 of anchor tube 5.

[0035] (5) Use pr...

Embodiment 2

[0039] When the number of sliding anchor cylinders is two and the number of fixed anchor cylinders 5 is one, the number of nuts 7 increases accordingly, and the implementation method of the present invention is as follows.

[0040] (1) Connect the fixed anchor tube 5 and the nut 7 through the first thread 6-1, then block the FRP reinforcement from the first end 1-1, slide the anchor tube 4, and plug the second end 1-2, The nut 7, the sliding anchor tube 4, the second end plug 1-2, the nut 7, the fixed anchor tube 5, and the third end plug 1-3 are sequentially passed through.

[0041] All the other are consistent with embodiment 1.

[0042] Or, (1) Connect the fixed anchor tube 5 and the nut 7 through the first thread 6-1, block the FRP reinforcement from the first end 1-1, slide the anchor tube 4, and block the second end 1-2, The nut 7, the fixed anchor tube 5, the second end plug 1-2, the nut 7, the sliding anchor tube 4, and the third end plug 1-3 are sequentially passed t...

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PUM

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Abstract

The invention discloses a bond-type anchorage for an FRP (Fiber Reinforced Plastic) rib. The anchorage comprises an anchorage cylinder, a nut (7) and end plugs (1-1, 1-2 and 1-3), wherein the end plugs (1-1, 1-2 and 1-3) are arranged at both ends of the anchorage cylinder which is provided with a glue filling hole (2). The end plugs (1-1, 1-2 and 1-3) are provided with positioning holes. The anchorage cylinder comprises a slippery anchorage cylinder (4) and a fixed anchorage cylinder (5). Screw threads (6-1) are arranged on the outer surfaces of the slippery anchorage cylinder (4) and the fixed anchorage cylinder (5). The slippery anchorage cylinder (4) is fixedly connected with the fixed anchorage cylinder (5) through the nut (7). The screw threads (6-1) are adaptive to the nut (7). The inner surface of the slippery anchorage cylinder (4) is a smooth surface, and the inner surface of the fixed anchorage cylinder (5) is a coarse surface. The anchorage disclosed by the invention is high in anchoring efficiency, low in damage to ribs and beneficial for improving the tonnage of the anchorage cylinder.

Description

technical field [0001] The invention relates to an anchoring device for tensile tendons (cables), in particular to a bonded anchor for FRP tendons and an implementation method thereof. Background technique [0002] The transverse shear strength of FRP tendons (fiber-reinforced composite materials) is low, and the existing FRP tendon anchors mainly include bonding type, clamping type and composite type (straight tube + inner cone). The bonding colloid in the bonded anchor has a protective effect on the FRP tendons. The stress distribution on the surface of the reinforcement in the anchor tube shows the law of "large in the middle and small at both ends", and "large in the cone section and small in the straight section", which is related to the roughness degree inside the anchor tube. Clamping anchors are prone to hoop stress concentration, resulting in damage to the reinforcement and low anchoring efficiency. The structure of the composite anchorage is complex, the requirem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C5/12E04G21/12
Inventor 李十泉陈蓓刘荣桂邹玉广许飞张河
Owner TAIZHOU INST OF SCI &TECH NUST
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