Method and structure for improving rigidity of reinforced concrete beam

Abstract

The invention discloses a method and structure for improving the rigidity of a reinforced concrete beam. According to the method, a frame structure is formed through welding angle steel and flat steel, the concrete beam is wrapped in the frame structure, and a framework steel beam which is used for fixedly arranging a load is welded to the bottom of a framework. According to the structure, during construction, protective layers of the existing reinforced concrete beams are not required to be eliminated, and adverse impacts and damage to the structures and strength of the existing reinforced concrete beams cannot be caused. According to the method and the structure, the structure is simple, the existing reinforced concrete beams can be hooped through the angle steel arranged on corner edges of each existing reinforced concrete beam and connecting flat steel and vertical flat steel which are used for connecting the angle steel, so as to form a steel-concrete composite member cross section, thus, the rigidity of the beam is improved effectively, and the deformation resistance and load carrying capacity of the existing reinforced concrete beams are improved greatly; the framework steel beam welded to the bottom end of the vertical flat steel can be conveniently connected with the carried load, so that the requirements of various structural modifications on reinforced concrete beam reinforcement can be excellently met.

Description

technical field [0001] The invention relates to a method and a structure for increasing the rigidity of a reinforced concrete beam, and belongs to the technical field of concrete beam reinforcement. Background technique [0002] In the use of reinforced concrete buildings, due to changes in building functions or existing structural defects, it is necessary to reinforce the main load-bearing reinforced concrete beams. The purpose of reinforcement is mainly to meet the two aspects of bearing capacity and use requirements. There are usually two existing reinforcement methods, one is to increase the cross-section of reinforced concrete beams, although this method can effectively improve the stiffness of existing reinforced concrete beams to solve defects such as deformation and cracks of reinforced concrete beams, but During the construction of this method, a series of processes such as removing the protective layer on the surface of the existing reinforced concrete beam, repai...

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Problems solved by technology

Although there is no need for formwork support and secondary pouring like the first method, the construction is still quite troublesome; in addition, because the reinforcement of outsourcing steel is mainly to use the strength of steel, due to the limitation of section form, its effect on improving the stiffness of components is limited

In addition, the above two methods have certain damage to the structure of the original reinforced concrete beam.

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