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CFRP inhaul cable self-heating joint

A self-heating and node technology, which is applied in the direction of construction, building structure, and building material processing, can solve the problems of CFRP cable node damage and failure, and achieve the effect of preventing brittle fracture, uniform bending transition, and promoting application

Pending Publication Date: 2018-11-23
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a CFRP cable self-heating node to solve the problem that CFRP cables are prone to damage and failure at nodes, so as to realize the safe and reliable application of CFRP cables in cable structures

Method used

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  • CFRP inhaul cable self-heating joint
  • CFRP inhaul cable self-heating joint
  • CFRP inhaul cable self-heating joint

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Embodiment Construction

[0013] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The specific embodiments described are only for explaining the present invention and are not intended to limit the present invention.

[0014] Such as figure 1 , figure 2 with image 3 As shown, a CFRP cable self-heating node proposed by the present invention includes a column holder 2 for connecting a brace, the column holder is a cylindrical barrel with a bottom, and one end of the outer side wall of the column holder 2 is provided with an ear plate 1. The ear plate 1 is used to connect the stay cable, the other end of the outer side wall of the column support 2 is provided with a support bottom plate 8 of the CFRP cable 5, and the support bottom plate 8 is provided with the column support 2 Vertical bottom plate groove 10 and through hole 11, the bottom plate groove 10 is used to place the CFRP cable 5, the ben...

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Abstract

The invention discloses a CFRP inhaul cable self-heating joint. The CFRP inhaul cable self-heating joint comprises a column bracket used for being connected with a supporting rod, a lug plate is arranged at one end on the outer side wall of the column bracket, the other end on the outer side wall of the column bracket is provided with a supporting bottom plate of a CFRP inhaul cable, a bottom plate groove and a through hole which are perpendicular to the column bracket are formed in the supporting bottom plate, and the bottom plate groove is used for placing the CFRP inhaul cable. The supporting bottom plate is connected with a cover plate, the bottom plate groove is covered with the cover plate, a resistance wire is arranged in the through hole, one end of the through hole is provided with a seal plate, a wiring hole is formed in the other end of the through hole, and the wiring hole is used for making an external power line connected with the resistance wire. A temperature measurement point is arranged at a joint of the CFRP inhaul cable. According to the CFRP inhaul cable self-heating joint, when needing to be bent at the joint, the CFRP inhaul cable can be heated and softened to reach the glass transition temperature of a resin matrix, so that the shape of the inhaul cable is matched with the bending shape of the joint, it is achieved that the CFRP inhaul cable is uniformlybent for transition at the joint, and the situation that the CFRP inhaul cable is damaged by transverse load at the joint and then brittlely fractured is prevented.

Description

Technical field [0001] The invention relates to a tension structure in civil engineering, in particular to a CFRP cable self-heating node. Background technique [0002] Carbon fiber reinforced composite material (CFRP for short) is considered to be an ideal substitute for steel to make prestressed cable components because of its light weight, high strength, corrosion resistance, fatigue fracture resistance and creep resistance, low linear expansion coefficient and low relaxation rate. Material can improve the overall performance of the cable structure. However, CFRP materials are brittle and easily damaged during use, which hinders the application of CFRP. The CFRP cable will bend at the nodes of the tensioned structure, and the resin matrix is ​​susceptible to damage due to concentrated load, which will cause the CFRP cable to break due to damage under load, which will cause great harm to the CFRP cable structure. Summary of the invention [0003] In order to enable the CFRP ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G21/12
CPCE04G21/12
Inventor 徐杰韩庆华王伟鑫
Owner TIANJIN UNIV
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