Anchoring method of carbon-fiber composite inhaul cable

Abstract

The invention relates to an anchoring method of a carbon-fiber composite inhaul cable. The anchoring method is characterized by comprising the steps of arranging carbon-fiber composite ribs at the two ends of the carbon-fiber composite inhaul cable into anchoring devices at the two ends, carrying out horizontal grounding and then vertical grouting on the anchoring device at one end, and carrying out horizontal grounding and then vertical grouting on the anchoring device at the other end. By means of the anchoring method of the carbon-fiber composite inhaul cable, the deposition direction of aggregate in anchoring packing is the same as the axial direction of the anchoring devices, anchoring packing in the cross sections of the anchoring devices is uniform in performance, the gradient change direction of the modulus of the anchoring packing is the same as the axial direction of the anchoring devices, the modulus of the anchoring packing is gradually increased from the front ends to the rear ends of the anchoring devices, the peak stress of the ribs inside the anchoring devices can be relieved easily, meanwhile, the situation that because stress concentration of the carbon-fiber composite ribs is generated at the load bearing ends of the anchoring devices, the carbon-fiber composite ribs fracture too early can be avoided, and accordingly the high strength of the carbon-fiber composite ribs can be brought into full play.

Description

Technical field [0001] The invention relates to a method for anchoring a carbon fiber composite cable, which is mainly used for anchoring a carbon fiber composite cable. Background technique [0002] Carbon fiber composite material has excellent properties such as light weight, high strength, no rust, corrosion resistance, fatigue resistance, low thermal expansion coefficient, and good shock absorption performance. The carbon fiber composite material bar is used for the cable components in the long-span cable bridge. Fundamentally solve the problem of poor fatigue and corrosion resistance of steel cables. At present, the anchoring method of the domestic carbon fiber composite cable is horizontal grouting, that is, the anchor is placed horizontally, the carbon fiber composite bar passes through the split hole baffle at the front and rear ends of the anchoring, and the anchoring filler is poured in from the middle opening of the anchor. There are vent holes at the front and rear e...

AI Technical Summary

Problems solved by technology

[0004] One: The horizontal anchoring causes the precipitation direction of the aggregate in the anchor filler to be perpendicular to the axis of the anchor, resulting in differences in the modulus and friction properties of the filler in the cross-section of the anchor. When the cable is axially loaded, the anchor transverse Uneven stress on the reinforcement in the cross-section

[0005] Second: Horizontal anchoring causes the anchor filler in the anchor to be in close contact with the front and rear end wire baffles of the anchor. When the cable is axially loaded, the front end of the anchor will hinder the forward advancement of the anchor filler, thereby Stress concentration occurs at the loaded end of the anchor, so the static load failure form of the carbon fiber composite cable produced by the horizontal anchoring often shows that the tendon breaks at the anchored end, and the tensile strength of the carbon fiber composite cannot be fully utilized.

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