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Frictional anchorage device applied to fibre reinforced composite cables

A technology of fiber composite materials and composite materials, which is applied in the field of anchors for fiber-reinforced composite tendon cables, and can solve problems such as bending fatigue at the end of the bonded area and bending fatigue at the end of the stress uniformity boosting area. , to achieve the effect of simple installation, lower lateral pressure and reasonable structure

Inactive Publication Date: 2011-11-23
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mechanical clamping anchors have problems such as uniformity of compressive stress in the clamping area and bending fatigue at the end of the clamping area, and bonded anchors also have problems such as bending fatigue at the end of the bonding area

Method used

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  • Frictional anchorage device applied to fibre reinforced composite cables
  • Frictional anchorage device applied to fibre reinforced composite cables
  • Frictional anchorage device applied to fibre reinforced composite cables

Examples

Experimental program
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Embodiment Construction

[0018] A friction anchor applied to fiber-reinforced composite tendon cables, comprising a frame 1 on which a plurality of fixed shafts (circular shafts) 2 wrapped around fiber composite tendon cables 5 are arranged, and the last The rear of the fixed shaft is provided with a helical pressure fastener 4 that compresses and fixes the end of the fiber composite tendon cable. The surface of the fixed shaft is in the form of a spiral groove matched with the fiber composite tendon cable, the width of the spiral groove is the same as the diameter of the fiber composite tendon cable, and the fiber composite tendon cable is wound in the spiral groove. Both ends of the fixed shaft are stepped. The screw pressure fastener is fixed on the frame. The two ends of the fixed shaft are fixed on the frame by fixing nuts 3 .

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Abstract

The invention discloses a frictional anchorage device applied to fibre reinforced composite cables. The frictional anchorage device comprises a rack, wherein a plurality of fixed shafts on which fibre reinforced composite cable are wound, and a spiral pressure fastening device used for pressing and fastening the tail ends of the fibre reinforced composite cables is arranged behind the last fixed shaft. The frictional anchorage device has a reasonable structure and is easy for installation and anchoring.

Description

technical field [0001] The invention relates to an anchor for a fiber-reinforced composite tendon cable. Background technique [0002] At present, the maximum main span of cable-stayed bridges in the world has reached 1088m (Sutong Bridge), and the steel cables used have gradually reached their limit. Because as the span continues to increase significantly, the weight of the steel cables will increase significantly in the proportion of the load of the bridge. Carbon fiber reinforced composite (CFRP) tendons have the advantages of light weight, high strength, corrosion resistance, fatigue resistance, low relaxation, good electromagnetic insulation and good shock absorption performance, and have good application prospects as strong cables of cable-stayed bridges . However, the bearing capacity of the CFRP tendon cable as the main stress member is mainly controlled by the performance of the anchorage, not by the strength of the CFRP tendon itself. This is because the transve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/14
Inventor 金江蒋泉高强丁华建
Owner NANTONG UNIVERSITY
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