CN-119754491-B - Carbon fiber inhaul cable and manufacturing method thereof

CN119754491BCN 119754491 BCN119754491 BCN 119754491BCN-119754491-B

Abstract

Compared with the round-section carbon fiber rods, the contact area between the round-section carbon fiber rods is obviously increased, the extrusion stress of the contact position of the carbon fiber rods during transverse extrusion of the cable body can be reduced, so that the transverse stress performance of the cable body is improved, the placement cavity for accommodating the round-section carbon fiber rods is formed at the central position of the sections of the round-section carbon fiber rods, the round-section carbon fiber rods can be installed in the placement cavity after the round-section carbon fiber rods are clustered to form the placement cavity, synchronous cluster with the round-section carbon fiber rods is avoided, and the optical fiber sensor in the round-section carbon fiber rods cannot be extruded and damaged, so that the production efficiency and the survival rate of the optical fiber sensor are improved.

Inventors

XU GUOWEN
LOU TING
QI LIGANG
MA MINGLEI
BAI JIE
YANG YAN
ZHANG SHIYANG
CHEN YUSHENG
Fu Guanjie
WANG XINGYU

Assignees

中国建筑第八工程局有限公司

Dates

Publication Date: 20260508
Application Date: 20241106

Claims (10)

1. A carbon fiber inhaul cable comprises a cable body and a coating layer arranged outside the cable body, and is characterized in that, The cable body comprises a round-section carbon fiber rod and a plurality of round-angle regular-hexagon-section carbon fiber rods, wherein adjacent edges of the round-angle regular-hexagon-section carbon fiber rods are in smooth transition through circular arcs, the round-angle regular-hexagon-section carbon fiber rods are densely matched in advance to form a hexagon or unfilled-angle hexagon section, a placement cavity for accommodating the round-section carbon fiber rods therein is formed in the center of the section, the round-section carbon fiber rods are placed in the placement cavity again, and gaps exist between the round-angle regular-hexagon-section carbon fiber rods and the surrounding round-angle regular-hexagon-section carbon fiber rods; the coating layer is arranged on the outer side of the carbon fiber bar with the round corner regular hexagon section.
2. The carbon fiber cable of claim 1, wherein the radius of inscribed circles of the round-angle regular-hexagonal-section carbon fiber rods is r 1 , the radius of the round-section carbon fiber rods is r 0 , and r 0 is less than r 1 .
3. The carbon fiber cable of claim 1, wherein the cladding includes one or more of a wrapping tape, a flame retardant insulation tape, and a PE protective sheath.
4. A carbon fiber inhaul cable according to claim 3, wherein the wrapping tape is wrapped on the outer side of the carbon fiber rod with the round-angle regular-hexagon cross section, the flame-retardant heat-insulating tape is wrapped on the outer side of the wrapping tape, and the PE protective sleeve is wrapped on the outer side of the flame-retardant heat-insulating tape.
5. The carbon fiber inhaul cable according to claim 1, wherein fillers are arranged in gaps between the round-corner regular-hexagon-section carbon fiber rods and the coating layer.
6. The carbon fiber cable of claim 5, wherein the filler is disposed in a lateral force-bearing section of the cable body.
7. The carbon fiber cable of claim 1, wherein an optical fiber sensor is provided in the circular-section carbon fiber rod.
8. A method for manufacturing a carbon fiber inhaul cable according to any one of claims 1 to 7, comprising: Firstly, arranging carbon fiber rods with circular cross sections, then distributing a plurality of carbon fiber rods with circular-angle regular-hexagon cross sections around the circumference of the carbon fiber rods with circular cross sections, densely matching the carbon fiber rods with circular-angle regular-hexagon cross sections to form a hexagonal or unfilled-angle hexagonal cross section, Wrapping the coating layer on the outer sides of the carbon fiber rods with the round corner regular hexagonal cross section.
9. The method for manufacturing a carbon fiber cable according to claim 8, characterized in that the method for manufacturing a carbon fiber cable further comprises: Firstly, a plurality of round-corner regular-hexagon cross-section carbon fiber bars are densely matched to form a hexagon or unfilled-corner hexagon cross section, a placement cavity is formed at the center of the cross section, then the round-section carbon fiber bars are placed in the placement cavity, Wrapping the coating layer on the outer sides of the carbon fiber rods with the round corner regular hexagonal cross section.
10. The method of manufacturing a carbon fiber cable according to claim 9, wherein a filler is filled in a gap between the round-corner regular-hexagonal-section carbon fiber rod and the cladding layer.

Description

Carbon fiber inhaul cable and manufacturing method thereof Technical Field The invention relates to the technical field of civil engineering, in particular to a carbon fiber inhaul cable. Background The carbon fiber composite material (CFRP) has ultrahigh tensile strength, can fully exert the tensile strength when being applied to a structure in a guy rope form, and can be used as a main tension member in a large-span space structure (such as a cable net structure and a string structure). However, CFRP is a typical anisotropic material, and has high longitudinal tensile strength, but poor transverse compressive and shear strength, so that the transverse stress performance of the CFRP cable is poor. The carbon fiber guy cable generally has two structural forms of parallel bar cables and parallel plate cables, wherein the cable body of the parallel plate cables is formed by stacking a plurality of layers of sheet-shaped carbon fiber thin plates, such as the guy cable disclosed in Chinese patent application publication No. CN 108004926A, and the cable body of the existing carbon fiber parallel bar cable is generally formed by arranging a plurality of carbon fiber bars with circular cross sections into a hexagonal or unfilled-corner hexagonal cluster so as to exert the axial tensile strength of the carbon fiber composite material. However, the carbon fiber rods with circular cross sections have small contact areas with each other, so that the cable body has poor performance of bearing transverse extrusion. Because the cross-sectional shape of the carbon fiber rod is related to the performance and the anchoring mode of the cable body, the performance and the anchoring mode of the cable body are correspondingly changed after the cross section of the carbon fiber rod is changed, and therefore, in the prior art, the carbon fiber round rod with the circular cross section is not replaced by the carbon fiber rod with the polygonal cross section. In addition, the intelligent carbon fiber rope body is a rope body combining a carbon fiber inhaul cable and an intelligent sensing technology, and is mainly used for monitoring and evaluating parameters such as stress, strain, temperature and the like of the rope body. The intelligent ribs in the intelligent carbon fiber rope body are formed by embedding optical fiber sensors into the carbon fiber rods, the non-intelligent ribs are formed by conventional carbon fiber rods, and the conventional intelligent carbon fiber rope body is formed by bundling the intelligent ribs and the non-intelligent ribs at the same time. However, after the optical fiber sensor is preset to intelligent muscle, the production of intelligent carbon fiber cable body is made and can be received intelligent muscle size restriction, and production efficiency is lower, and intelligent muscle is at the synchronous in-process of bundling of non-intelligent muscle, and inside optical fiber sensor receives the extrusion easily and damages, and the survival rate is lower, leads to manufacturing cost higher. Therefore, how to effectively improve the transverse stress performance of the carbon fiber parallel rod rope and improve the production efficiency of the intelligent carbon fiber rope body and the survival rate of the optical fiber sensor at the same time becomes a problem to be solved in the field. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a carbon fiber inhaul cable with good transverse stress performance, high production efficiency and high survival rate of an optical fiber sensor and a manufacturing method thereof. In order to achieve the aim, the invention provides a carbon fiber inhaul cable which comprises a cable body and a coating layer arranged on the outer side of the cable body, The cable body comprises a round section carbon fiber bar and a plurality of round angle regular hexagon section carbon fiber bars, the round angle regular hexagon section carbon fiber bars are densely matched to form a hexagon or unfilled hexagon section, a placement cavity for accommodating the round section carbon fiber bars therein is formed at the center of the section, The coating layer is arranged on the outer side of the carbon fiber bar with the round corner regular hexagon section. Further, the radius of an inscribed circle of the round-corner regular-hexagon-section carbon fiber bar is r 1, adjacent edges are in smooth transition through an arc, the radius of the round-section carbon fiber bar is r 0, and r 0 is smaller than r 1. Further, the coating layer comprises one or more of a wrapping tape, a flame-retardant heat-insulating tape and a PE protective sleeve. Further, the wrapping belt is wrapped on the outer side of the carbon fiber rod with the round-angle regular hexagon cross section, the flame-retardant heat-insulating belt is wrapped on the outer side of the wrapping belt, and the PE protective sleeve is wrapped on the outer side of the flame-retar