Detachable fiber cloth prestressed tensioning and anchoring device

Abstract

The invention discloses a detachable fiber cloth prestressed tensioning and anchoring device. The detachable fiber cloth prestressed tensioning and anchoring device comprises two anchoring plates, twoclamping plates, two tensioning anchorage devices, two tensioning screws, two anchoring screws and a fiber cloth. The two ends of the fiber cloth are coated with glue and then wind around the anchoring plates by two circles, the anchoring plates and the clamping plates are fixedly connected through small bolts, and the fiber cloth winds around the anchoring plates the clamping plates by two circles. The anchoring plates, the clamping plates and the tensioning anchorage devices are fixedly connected through large bolts. The tensioning screws penetrate into tensioning screw holes of the tensioning anchorage devices, and the tensioning screws are tightened to apply prestress on the fiber cloth. The surface of the fiber cloth is coated with glue, and then the anchoring screws penetrate into anchoring screw holes in the anchoring plates. The anchoring screws are tightened synchronously so as to keep the prestress on the fiber cloth. After the glue on the fiber cloth is solidified, the large bolts between the tensioning anchorage devices and the clamping plates are loosened, and the tensioning anchorage devices and the tensioning screws are unloaded. According to the detachable fiber cloth prestressed tensioning and anchoring device, the reinforcing effect is good, the structure is simple, and operating is convenient; and the tensioning screws and the tensioning anchorage devices can be detached and reused, and the cost is saved.

Description

technical field [0001] The invention belongs to the field of structural reinforcement such as bridge engineering and construction engineering, and in particular relates to a detachable prestressed fiber cloth tensioning and anchoring device for reinforcing reinforced concrete pier columns. Background technique [0002] Due to the local damage of the structure and the aging of materials, the original components of buildings and bridge piers cannot meet the requirements of bearing capacity, so they need to be reinforced. During reinforcement, the concrete is in a three-dimensional compression state by providing lateral restraint to the pier column, thereby improving the ultimate bearing capacity and ductility of the concrete. At present, the commonly used methods of prestressing and strengthening pier columns include prestressing steel hoops, steel strips, fiber cloth, steel strands, etc. Compared with traditional reinforcement materials, Fiber Reinforced Plastics (FRP) has t...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the tension anchor devices for concrete piers reinforced by prestressed fiber cloth are permanent, and the tension anchors cannot be reused, and the cost is high

And the anchorage is exposed on the surface of the pier column, which not only affects its durability but also has a certain impact on the appearance of the structure

In addition, in the commonly used tensioning anchors, the fiber cloth is wound on the clip or roller. When the fiber cloth is wide or the prestress is large, the clip or roller will bend and deform greatly during tension, making the prestress value of the fiber cloth less than expected

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