High-strength carbon fiber bar external prestressing anchoring device and using method thereof

Abstract

The invention relates to a high-strength carbon fiber bar external prestressing anchoring device and a using method thereof. The high-strength carbon fiber bar in-vitro prestressed anchoring device comprises a pair of oblique force transmission steel plates (9) arranged symmetrically, top reinforcing devices arranged at the top ends of the oblique force transmission steel plates (9), top transverse reinforcing devices which are respectively fixed with the top reinforcing devices at the top ends of the two oblique force transmission steel plates (9) and used for reinforcing the top of a bridge and bottom transverse reinforcing devices which are arranged at the bottom ends of the two oblique force transmission steel plates (9), respectively fixed with the bottom ends of the oblique force transmission steel plates (9) and used for reinforcing the bottom of the bridge. According to the high-strength carbon fiber bar external prestressing anchoring device disclosed by the invention, only a through hole needs to be drilled on a web plate during the construction, so that the high-strength carbon fiber bar external prestressing anchoring device has the advantages of few open holes and small damages to a bridge body, and can simultaneously effectively avoid the possible problem that the tensile stress of an anchorage section is too large because anchorage is performed in a tensile region at the lower part of a girder web plate, increase the torque of pre-stressing force, improve a carbon fiber bar external prestressing reinforcing effect, realize a simple and reasonable force transmission route and avoid the trivial construction due to implantation of a large number of anchor bars in a traditional anchorage way.

Description

technical field [0001] The invention relates to an anchoring device and its use method, in particular to an external prestressed anchoring device of high-strength carbon fiber reinforcement and its use method. Background technique [0002] When strengthening the bridge structure with external prestressing, due to the influence of the site pier and adjacent structures, it is difficult to directly anchor the external reinforcement to the end of the bridge structure, and the tensile strength of the carbon fiber reinforcement is high, but the lateral bending resistance is poor, so it is not easy Arranged in the form of broken lines, therefore, it is necessary to develop a new anchoring device to effectively anchor the prestressed carbon fiber bars to the reinforcement object in a straight line. Contents of the invention [0003] The present invention mainly solves the problem existing in the prior art that it is difficult to directly anchor the external reinforcement to the en...

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Problems solved by technology

[0003] The present invention mainly solves the problem existing in the prior art that it is difficult to directly anchor the external reinforcement to the end of the bridge structure due to the influence of the on-site piers and adjacent structures, and the tensile strength of the carbon fiber reinforcement is high, but the lateral bending resistance Poor, difficult to arrange in the form of broken lines and other technical problems; provide a method that effectively avoids the problem of excessive tensile stress in the anchorage section caused by anchoring in the tension area of ​​the lower part of the beam web, and increases the prestressing moment at the same time. A high-strength carbon fiber reinforced external prestressed anchoring device and its use method are based on the external prestressed reinforcement effect of carbon fiber reinforced reinforcement, the force transmission route is simple and reasonable, and avoid the cumbersome construction of implanting a large number of anchored reinforcements in the traditional anchoring method

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