A composite anchor for frp tendons

A composite anchorage technology, applied in bridges, bridge parts, bridge construction, etc., can solve problems such as prone to bending and eccentric tension, complex anchoring process operation, short anchorage bonding length, etc., and achieve high anchorage efficiency , Avoid pinching the tendons and reduce the length of the anchoring device

Active Publication Date: 2020-06-26
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the shortcomings of the existing single FRP tendon anchorage, such as low anchorage efficiency, large anchorage length, complicated anchoring process operation, easy bending and eccentric tensile damage during tension, the anchorage of the present invention can not only fix the FRP tendon For effective anchoring, it also has a short bonded length of the anchor, and the operation process is simple

Method used

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  • A composite anchor for frp tendons
  • A composite anchor for frp tendons
  • A composite anchor for frp tendons

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Embodiment Construction

[0023] For a further understanding of the present invention, further description will now be given below in conjunction with the accompanying drawings.

[0024] figure 1 It is a longitudinal sectional view of a composite anchor, which includes a conical metal cylinder 4, a circular anchor ring 3, a bonding medium 2, and an end plug 5; the inside of the circular anchor ring is cone-shaped, and the inner wall is smooth For processing, the metal cylinder is a cone-shaped cone cylinder, the inner wall is roughened, and there is an angle difference of 0.1° to 0.3° between the circular anchor ring 3 and the metal cylinder 4 .

[0025] figure 2 I-I sectional view, the cross section of the conical metal cylinder 4 is circular, the FRP rib 1 is located at the center, the central gap is filled with the bonding medium 2, and the bonding medium 2 needs to be cured until it is completely cured.

[0026] image 3 It is the structure diagram of the end plug. The end plug 5 is in the shap...

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Abstract

The invention discloses a composite anchor for FRP ribs, and relates to the field of anchorage. The anchor comprises an anchor ring, a metal barrel and an end plug; a conical through hole is formed inthe center of the anchor ring; the metal barrel is mounted in the conical through hole of the anchor ring, and two ends of the metal barrel are protruded out of the anchor ring; the metal barrel is aconical empty barrel; and a CFRP rib is arranged in the center of the metal barrel, the CFRP rib penetrates through the metal barrel, and the metal barrel is filled with an adhesive and is positionedand plugged by the end plug to form an FRP rib combination. After maintaining is finished, the anchor ring is assembled on the combination, and the anchor can be stretched after pretightening force is applied. The anchor is simple to manufacture and operate, high in anchorage efficiency and short in anchorage length, and can be applied to reinforcing engineering.

Description

technical field [0001] The invention relates to an anchoring device for tension tendons, in particular to a composite anchoring device for anchoring a single FRP tendon (fiber-reinforced composite material). Background technique [0002] FRP tendons (fiber-reinforced composite materials) have weak transverse shear resistance. At present, the existing FRP tendon anchors mainly include bonded type and clip type. Bonded anchors mainly rely on the bonding force between the bonding medium and the surface of the reinforcement, so a larger anchor cylinder is required; clip-type anchors mainly rely on the extrusion force of the clip on the reinforcement, so hoop stress will be generated Concentration, easy to pinch tendons. [0003] The first domestic CFRP cable-stayed bridge at Jiangsu University used bonded anchors (see literature: Experimental Research on CFRP Cable-Stayed Anchors (Mei Kuihua, Lu Zhitao, Zhang Jiwen, et al. Static load of CFRP cable-stayed anchors) Experimental...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C5/12
CPCE01D19/14E01D2101/30
Inventor 谢桂华卞玉龙刘荣桂冯倩红席宜超
Owner JIANGSU UNIV
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