A reinforced concrete slab with shear reinforcement channel steel frame around it

Abstract

The invention discloses a reinforced concrete plate with a shear reinforcement steel channel frame at the periphery, and belongs to the field of building materials. The reinforced concrete plate comprises concrete, a dual-layer steel mesh reinforcement, steel channel and shear reinforcements, wherein the steel channel is welded to form the frame; the shear reinforcements are spot welded on the steel channel, form angles of 45 degrees together with the plane of the plate, and are positioned at the inner side edge of a steel channel opening corresponding to the end part of a reinforcing steel bar of the upper-layer steel mesh reinforcement; the steel mesh reinforcement comprises longitudinal reinforcements and transverse reinforcements which are arranged at intervals in a uniform staggered manner; the longitudinal reinforcements and transverse reinforcements are arranged at equal intervals; the steel mesh reinforcement serves as the framework of the plate and is arranged in the thickness direction of the plate in a layering manner; the periphery of the steel mesh reinforcement is welded to the steel channel frame, and the middle is wrapped with concrete. The reinforced concrete plate disclosed by the invention is simple in structure, convenient to manufacture, and excellent in bending resistance, shear resistance, and anti-seismic property, can realize standardized and industrial production of floor slabs, and has an important significance in realizing the industrial production target of steel structure buildings.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a reinforced concrete slab with a channel steel frame provided with shear ribs around the periphery. Background technique [0002] The steel structure system is easy to realize industrialized production and standardized production. Compared with the traditional reinforced concrete structure construction method, the prefabricated steel structure has the advantages of "four sections and one environmental protection", which belongs to green buildings. At present, the middle beams, columns and wall panels of multi-high-rise steel structures in China can be manufactured in factories and assembled on site, but the floor slabs or wall panels are still mostly formed by on-site pouring. On the one hand, during the construction of the steel structure system, due to the construction technology and the characteristics of the building materials themselves, the pouring and mainten...

AI Technical Summary

Problems solved by technology

On the one hand, during the construction of the steel structure system, due to the construction technology and the characteristics of the building materials themselves, the pouring and maintenance of the cast-in-place concrete slabs obviously lag behind the construction speed of the main frame of the steel structure, and the construction connection of the two main components Incoherent, not compact, unable to form a smooth flow operation, seriously restricting the assembly and construction speed of the steel structure system, so that the advantages of short construction period and quick capital return of steel structure buildings cannot be fully realized

On the other hand, even if the steel-reinforced concrete slab has been developed, after assembly and construction, it is often at the connection between the slab and the slab or the connection between the slab and the beam. The steel and concrete in the slab are of different materials, and the contact surface is large. Due to the action of moment and oblique shear force, the contact surface is prone to shear slip or the concrete cracks early, resulting in a loose connection between the steel and the concrete, resulting in a decrease in the integrity and bearing capacity of the slab structure

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