A beam reinforcement method

Abstract

The invention provides a beam strengthening method and belongs to the technical field of building restoration. The beam strengthening method comprises the steps of selecting a core material of a beam which is strengthened by a core embedment method, strengthening the core material, and strengthening the beam by using the core material through the core embedment method after strengthening the core material. According to the beam strengthening method, the core material adopted for the core embedment method is further strengthened, the probability that the bearing capacity of the core material gets closer to the original bearing capacity of the beam is increased, the range of elasticity of the material is widened, high-strength materials are utilized more fully, and the material characteristics are performed; the ultimate bearing capacity is improved, and the structural distortion is reduced; occurrence of cracks of timber in a tensioned region is delayed, and the ductility is improved; the rigidity of the steel-concrete beam is enhanced. Therefore, according to the beam strengthening method, on the premise that external decorations of structural parts are not destroyed and affected, and the mechanical performance index of the core material can be resorted to the mechanical performance index of the original beam.

Description

technical field [0001] The invention belongs to the technical field of building restoration, and relates to a reinforcement method, in particular to a beam reinforcement method. Background technique [0002] The vast majority of ancient Chinese buildings belong to wooden structure buildings. Due to long-term exposure to the sun and rain, termite erosion, and corrosion and aging of component surfaces, the safety of these ancient buildings is decreasing year by year. At present, the reinforcement and repair of wooden components of ancient buildings generally adopts the replacement of whole beams, or grouting filling of holes and cracks. These methods have improved the safety of ancient buildings to a certain extent, but their disadvantages are that the beams and columns of the building need to be unloaded before replacing the beams and columns, which has potential safety hazards, and the construction speed is slow and the cost is high. In addition, the appearance of the repla...

AI Technical Summary

Problems solved by technology

These methods have improved the safety of ancient buildings to a certain extent, but their disadvantages are that the beams and columns of the building need to be unloaded before replacing the beams and columns, which has potential safety hazards, and the construction speed is slow and the cost is high.

[0004] There are a large number of theoretical and experimental analyzes at home and abroad for the methods and technologies of wooden beam reinforcement and repair, but basically all of them are reinforcement methods such as directly pasting steel, cloth and ribs on the surface of the original beam members. Destroying the bearing capacity or stiffness of the specimen is the main goal of the reinforcement technology, and the reinforcement treatment method is unidirectional, irreversible, and cannot be reinforced twice, and has a great impact on the appearance of the wooden beam

A large number of literature studies have proved that the reinforcement methods such as directly pasting steel, cloth and ribs on the wooden beam members can improve the mechanical performance indicators of the wooden beams, but these reinforcement methods are basically one-time and not replaceable. It is not easy to reinforce

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