Pre-tensioning steel wire and polymer mortar externally-added layer reinforcing device

Abstract

The invention discloses a pre-tensioning steel wire and polymer mortar externally-added layer reinforcing device which comprises an anchoring end, a lengthener, a tensioning end and a plurality of high-strength steel wires. In the use state, the high-strength steel wires are arranged on a concrete beam in parallel in the length direction of the concrete beam. One ends of the high-strength steel wires are fixedly connected through the anchoring end fixed to the surface of the concrete beam. The middle parts of the high-strength steel wires are supported by the lengthener fixed to the surface of the concrete beam. The other ends of the high-strength steel wires are fixedly connected through the tensioning end on the surface of the concrete beam. The tensioning end can adjust the prestress force of each high-strength steel wire. In addition, the device forms a unified whole through the polymer mortar coated on the surface of the concrete beam and the concrete beam. In the use process, the high-strength steel wires are large in tensioning force and small in prestress loss; by arranging the lengthener, the high-strength steel wires and corresponding threaded reinforcing steel bars are connected, the effective tensioning problem of the high-strength steel wires is solved, and construction safety is easy obtained.

Description

[0001] Technical field: [0002] The invention belongs to the field of engineering application, and in particular relates to a pre-tensioned steel wire-polymer mortar external layer reinforcement device. [0003] Background technique: [0004] The existing bridge structure reinforcement construction method is external prestressed reinforcement or pre-tensioned steel wire rope mesh polymer mortar seal layer. The existence of gaps in the process of torsion twisting causes large deformation at the initial stage of stress, which cannot provide effective tension, and the loss of prestress in the later stage is relatively large, and the reinforcement effect is poorer than that of high-strength steel wire; the diameter of high-strength steel wire (general specification 5mm , 6mm), the actual tension is more difficult. [0005] Invention content: [0006] The purpose of the present invention is to provide a pre-tensioned steel wire-polymer mortar external layer reinforcement device, ...

AI Technical Summary

Problems solved by technology

[0004] The existing bridge structure reinforcement construction method is external prestressed reinforcement or pre-tensioned steel wire rope mesh polymer mortar seal layer. The existence of gaps in the process of torsion twisting causes large deformation at the initial stage of stress, which cannot provide effective tension, and the loss of prestress in the later stage is relatively large, and the reinforcement effect is poorer than that of high-strength steel wire; the diameter of high-strength steel wire (general specification 5mm , 6mm), the actual stretching is more difficult

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