Construction method for prestressed reinforcement of frame beam

Abstract

The invention relates to a construction method for prestressed reinforcement of a frame beam. The construction method comprises the following steps of S1, surface layer treatment, wherein an originalsurface layer of the frame beam is stripped to expose concrete and to do cleaning; S2, material preparation; S3, prestressed reinforcement construction, wherein moving seats are fixed to the two endsof a prestressed reinforcement piece, prestressed stretching devices and a base are fixed, the base is fixed to the bottom of the frame beam, the prestressed reinforcement piece is placed between thetwo prestressed stretching devices, the moving seats are fixed to the prestressed stretching devices, the prestressed stretching devices are activated until a designed pulling force value is reached,and the moving seats are fixed to the frame beam; and S4, anti-shearing reinforcement construction, wherein an overall structure is mounted on the side wall of the frame beam after mounting seats arefixed to the two ends of an anti-shearing bar to ensure that the anti-shearing bar is inclined upwards from the portion far away from the end portion of the frame beam towards the end portion of the frame beam. According to the construction method, pre-pressure stress is applied to the bottom of the frame beam by the prestressed reinforcement piece, so that the bearing capacity of the frame beam is enhanced; and the anti-shearing bar can improve the shear strength of the frame beam.

Description

technical field [0001] The invention relates to the technical field of frame beam reinforcement, in particular to a construction method for frame beam prestress reinforcement. Background technique [0002] During the use of buildings, regular structural inspections are required. When the bearing capacity of the structural inspection and setting-out building cannot support its normal operation, the building needs to be reinforced. The general reinforced components are usually the column load-bearing structures of buildings, such as frame beams, frame columns, floors and foundations. [0003] There are many ways to strengthen frame beams, mainly including bonded steel reinforcement, carbon fiber, and enlarged cross-section reinforcement. [0004] For example, the Chinese patent whose authorized notification number is CN103912133B discloses a reinforcement method of frame beam transverse tension prestressed carbon fiber sheet, including the following main specific steps: past...

AI Technical Summary

Problems solved by technology

[0005] Using carbon fiber sheets for reinforcement, although the construction is relatively fast, its reinforcement strength for the frame beams is always limited

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