Carbon fiber reinforced plastics (CFRP) inhaul cable of cable-supported structure
A main body and casing technology, applied in the field of prestressed cable components, can solve the problems of unsuitable string support structure, poor corrosion resistance, overall structural damage, etc., to ensure bearing capacity, strong corrosion resistance, and overcome poor fire resistance Effect
Inactive Publication Date: 2014-08-27
TIANJIN UNIV
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Problems solved by technology
However, in practical applications, due to the poor corrosion resistance of steel cables, corrosion often leads to the loss of bearing capacity and the overall damage of the structure.
In order to solve this problem, those skilled in the art plan to use carbon fiber reinforced composite material (CFRP) with good corrosion resistance, light weight and high strength to replace the steel cable in the suspensive structure, but experiments have found that the lateral force of CFRP material is relatively weak , and the current existing CFRP cables are not easy to bend and have poor fire resistance, so they are not suitable for use in suspensive structures
Method used
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[0021] In order to make the technical solution of the present invention easier to understand clearly, it will be described in detail below in conjunction with the accompanying drawings and specific embodiments:
[0022] see figure 1 , figure 2 , image 3 , Figure 4 , the CFRP cable used for the suspension structure of the present invention includes a cable main body 1 and a braided sleeve 2 arranged outside the main cable main body 1; the main cable main body 1 is twisted by several CFRP tendons 3 The CFRP tendon 3 is formed by impregnating continuous carbon fiber filaments into a resin matrix and thermosetting.
[0023] In order to improve the bending performance of the existing CFRP cable and overcome its inflexible defect, the present invention sets the cable main body 1 as the one with a nominal diameter of D and several CFRP tendons 3 with a diameter of d. Stranded, and the lay length is determined to be 14D to 16D. At the same time, on the basis of ensuring its rig...
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Abstract
The invention discloses a carbon fiber reinforced plastics (CFRP) inhaul cable of a cable-supported structure. The inhaul cable comprises an inhaul cable main body which is formed by twisting a plurality of CFRP bars, and a woven sleeve outside the inhaul cable main body, wherein each CFRP bar is formed by continuous carbon filaments soaked into a resin matrix in a thermosetting manner. The CFRP inhaul cable has the advantages that the characteristics of lightness, high strength and high corrosion resistance of a CFRP material are brought into full play, so that the carrying capacity of the inhaul cable is ensured; resin with good tenacity and reduced content is taken as a base material to shape the CFRP bars forming the inhaul cable main body in a thermosetting manner, and the inhaul cable main body is also shaped by the woven sleeve, so that the bending property of the inhaul cable is improved, and the inhaul cable can be normally used within a certain bent angle; the CFRP bars are subjected to thermosetting in the resin matrix with high distortion temperature, and a fire retardant is added to the resin matrix material so as to obtain high fire resistance, and thus the applicability of the CRFP inhaul cable to the cable-supported structure is improved.
Description
technical field [0001] The invention relates to a CFRP (Carbon Fiber Reinforced Polymer, carbon fiber reinforced composite material) cable used in a chord structure, more specifically, the invention relates to a prestressed cable member that bears tension in the chord structure. Background technique [0002] The cable member is the main force-bearing member of the suspensive structure, and the steel cable member is the most commonly used in engineering. However, in practical applications, due to the poor corrosion resistance of steel cables, corrosion often leads to the loss of bearing capacity and subsequent damage to the overall structure. In order to solve this problem, those skilled in the art intend to use carbon fiber reinforced composite (CFRP) with good corrosion resistance, light weight and high strength to replace the steel cables in the suspensive structure, but experiments have found that the transverse force of CFRP materials is relatively weak , and the curren...
Claims
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Login to View More IPC IPC(8): E04C3/00B29C70/16
CPCD07B1/02D07B2201/209D07B2205/3007D07B2801/10
Inventor 韩庆华王力晨徐杰张为芦燕
Owner TIANJIN UNIV