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Anchoring system of carbon fiber reinforcement based on long-term performance

An anchoring system, long-term performance technology, applied in the direction of strength characteristics, instruments, measuring devices, etc., can solve problems such as complex procedures and operations, achieve the effects of convenient operation, improve long-term performance, and reduce cumulative fatigue damage

Inactive Publication Date: 2019-03-05
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In addition, when performing fatigue tests on carbon fiber reinforcement anchorage systems, it is often necessary to modify the fatigue testing machine, and the procedures and operations are more complicated

Method used

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  • Anchoring system of carbon fiber reinforcement based on long-term performance
  • Anchoring system of carbon fiber reinforcement based on long-term performance
  • Anchoring system of carbon fiber reinforcement based on long-term performance

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0022] Such as figure 1 , figure 2 As shown, the present invention includes a steel sleeve, a variable stiffness mortar binder, an end plug and a conversion head, wherein the inner wall of the steel sleeve is roughened to improve the interface between the steel sleeve and the variable stiffness mortar binder. Friction force; the steel sleeve includes a variable-section sleeve plus a straight section with no taper angle whose length does not exceed 1 / 4 of the length of the variable-section sleeve. The surface is engraved with threads. Both ends of the steel sleeve are provided with end plugs. The end plugs are copper circular sheets with a round hole in the middle. The front end plug 401 of the barrel is glued to the end of the steel sleeve. On the one hand, it prevent...

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Abstract

The invention belongs to the technical field of bridge construction equipment and particularly relates to a carbon-fiber rib anchoring system aiming at improving long-term performance and a mechanical test conversion device. The system comprises a steel sleeve, a variable rigidity gel sand binder, end plugs and a conversion head. The steel sleeve comprises a variable section sleeve body and a taper-angle-free straight section with the length no larger than 1 / 4 of the length of the variable section sleeve. The round copper sheet end plugs with round holes formed in the middle are arranged at the two ends of the steel sleeve. The variable rigidity gel sand binder with embedded steel ribs added into the quartz sand combination is poured into the steel sleeve. The conversion head comprises an anchorage device connecting section and a loading system chuck connecting section. Anchoring effectiveness of the carbon-fiber ribs is effectively improved, fatigue resistance and creep resistance are enhanced, and the test conversion device is suitable for the general testing system.

Description

technical field [0001] The invention belongs to the technical field of bridge construction equipment, and in particular relates to a carbon fiber tendon anchorage system aimed at improving long-term performance. Background technique [0002] Carbon fiber reinforcement is a new type of composite material reinforcement formed by pultrusion, with synthetic resin as the matrix, carbon fiber as the reinforcing material and an appropriate amount of auxiliary agent. Carbon fiber reinforcement has excellent properties such as non-corrosion, non-magnetic, light weight, good creep resistance, fatigue resistance, high specific elastic modulus and ultimate tensile strength, and has a very wide application prospect in the field of civil engineering. In particular, it has incomparable advantages over traditional steel cables when it is applied to the cable structure of long-span sea-crossing bridges with harsh environments and high load ratio requirements. In recent years, research on th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/02
CPCG01N3/02
Inventor 谢桂华臧娜刘荣桂黄俊杰唐永生梁戈
Owner JIANGSU UNIV
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