An external prestressed tension anchoring device and anchoring method for carbon fiber reinforcement

Abstract

The invention relates to a carbon-fiber-reinforcement external pre-stressing tension anchor device and an anchoring method. The carbon-fiber-reinforcement external pre-stressing tension anchor device comprises an L-shaped steel plate, a double-sleeve screw device and a clip-type anchorage for fixing a carbon fiber reinforcement, wherein the L-shaped steel plate can be fixed with a beam through a bolt, and two side faces of the L-shaped steel plate are welded with steel sheets; and a hole is formed in the middle of the double-sleeve screw device, the carbon fiber reinforcement can penetrate through the hole, and the double-sleeve screw device can be manually twisted. The device has the advantages simple structure, convenience in installation construction and short period and quickly reinforces the beam on the premise of uninterrupted traffic, the beam is not damaged in the whole installation process, and the size of pre-stressing is controlled and adjusted in real time through the double-sleeve screw device. As the structure is simple, other force applying devices are not used and the traffic is not interrupted in the installation force-applying process, and the economic cost is effectively saved.

Description

technical field [0001] The invention belongs to the technical field of bridge structures, and mainly relates to a prestressed tension anchoring system and a method for using the same, in particular to an external prestressed tension anchoring device and an anchoring method for carbon fiber reinforcement. Background technique [0002] The strengthening of bridge structures is an important topic in contemporary engineering research, and external prestressing is an effective strengthening method. Nowadays, carbon fiber reinforcement technology is becoming more and more perfect and widely used in engineering. When the external prestressed carbon fiber reinforcement is arranged at the bottom of the bridge structure beam, it can effectively improve the tensile and bending resistance of the bridge. However, when strengthening the bridge structure, how to anchor the carbon fiber reinforcement Installation, and how to effectively add prestress to the external reinforcement and apply ...

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Problems solved by technology

[0004] The present invention is mainly to solve technical problems such as how to effectively anchor and install carbon fiber to the bottom of the bridge, and effectively stretch carbon fiber tendons.

[0005] The invention solves the technical problem that due to the high tensile strength and large tensile force of the carbon fiber tendon, when the external prestressed tendon is arranged at the bottom of the bridge, due to the influence of space and other factors, the traditional technology cannot effectively stretch it, and provides An external prestressed tensile anchoring device and anchoring method for carbon fiber reinforcement with simple structure, convenient construction, short construction period, and no interruption of traffic during the reinforcement process

[0006] The invention also solves the problem that although the carbon fiber reinforcement has high tensile strength and good tensile performance, its prestress size will change when it is in a different stress state during application and when it is disturbed by the outside world. The technical problem that requires real-time control and adjustment of its prestress provides a simple and fast construction method that can implement real-time controllable operations on the prestress size of carbon fiber reinforcement, and can adjust the direction of carbon fiber reinforcement at any time. External prestressed tension anchoring device and anchoring method for carbon fiber reinforcement

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