Steel-concrete composite beam

Abstract

The invention discloses a steel-concrete composite beam which comprises H-shaped steel, concrete and a reinforcing mesh disposed in the concrete, wherein the bottom of the concrete is clung with a bottom wing plate of the H-shaped steel; two side faces of the concrete are flush with edges of the bottom wing plate of the H-shaped steel; separation space is formed between the top of the concrete andthe top wing plate of the H-shaped steel; one section of a middle web of the H-shaped steel is embedded in the concrete, and the other section is located in the separation space; and multiple mutually isolated through holes used for passing of rebar are formed in the section, located in the separation space, of the middle web of the H-shaped steel. The steel-concrete composite beam disclosed by the invention has the beneficial effects that a building net height is saved; combined effects of the steel-concrete composite beam are enhanced; bearing force and rigidity of the steel-concrete composite beam are enhanced, so deflection of a horizontal structure can be controlled effectively, and comfort is enhanced; and problems of cracking of internal parting walls are reduced.

Description

technical field [0001] The invention relates to the technical field of building structures, in particular to a steel-concrete composite beam. Background technique [0002] As a key technology of construction industrialization, prefabricated steel structure building has a series of advantages such as standardized design, factory manufacturing, and assembly construction. Fire and durability grades require anti-corrosion and fire prevention treatment. During the decoration treatment, gypsum boards or cement fiberboards and other decorative boards need to be covered on site. The upper flange of the shaped steel has a large waste of building clear height, and when the H-shaped steel is the main frame beam, its combined effect with the concrete floor is difficult to realize. At present, how to effectively solve the above problems in the field of prefabricated steel structure building technology has become a difficult problem in the industry. Contents of the invention [0003] ...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the deficiencies of the existing H-shaped steel beams in terms of fire prevention and anticorrosion, building decoration, building net height, and structural force performance, and provides a method that saves the building net height and increases the steel-concrete composite beam. The combined effect of the steel-concrete composite beam improves the bearing capacity and stiffness of the steel-concrete composite beam, so that the deflection of the horizontal structure can be effectively controlled, the comfort is improved, and the cracking of the inner partition wall is reduced.

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