Wave-starting steel reinforced concrete composite beam

Abstract

The invention belongs to the related technical field of constructional engineering, and discloses a wave-starting steel reinforced concrete composite beam which comprises a concrete body, I-shaped steel, a plurality of trapezoidal connecting seats, a plurality of trapezoidal fixing seats and a plurality of trapezoidal waves. The trapezoidal connecting seat, the trapezoidal fixing seat and the trapezoidal wave are respectively accommodated in the concrete body; the I-shaped steel comprises an upper flange plate, a web plate and a lower flange plate, and the opposite ends of the web plate are connected with the upper flange plate and the lower flange plate in an inserted mode respectively. Two groups of trapezoidal fixing seats are respectively arranged on two sides of the web plate; two groups of trapezoidal waves are respectively arranged on two opposite surfaces of the upper flange plate and the lower flange plate, and the two groups of trapezoidal waves are arranged in a staggered manner; the surfaces, away from the web, of the upper flange plate and the lower flange plate are each provided with a plurality of trapezoidal connecting bases. The connection fixity is improved, and normal use and bearing capacity of the composite beam are ensured.

Description

technical field [0001] The invention belongs to the technical field related to construction engineering, and more specifically relates to a corrugated steel-concrete composite beam. Background technique [0002] The steel-concrete composite beam is a kind of steel-concrete composite structure, which refers to the steel-concrete composite beam composed of I-beam or H-shaped steel and concrete filled in the flanges on both sides. This combination method can give full play to the material properties of steel and concrete. , effectively improving the bearing capacity, ductility and seismic performance of composite beams, so steel-concrete composite beams are widely used in long-span structures, high-rise and super high-rise buildings. [0003] Those skilled in the art have done some research. For example, patent CN107023114A discloses a steel and concrete composite structure connector and composite beams, including a base plate and a reinforcing bar positioning mechanism. The re...

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Problems solved by technology

[0003] Those skilled in the art have done some research. For example, patent CN107023114A discloses a steel and concrete composite structure connector and composite beams, including a base plate and a reinforcing bar positioning mechanism. The reinforcing bar positioning mechanism includes a web and a flange plate. And the steel support block, the bottom plate is set horizontally, the web is vertically set and its lower end is fixed on the upper surface of the bottom plate, the flange plate is set above the bottom plate and parallel to the bottom plate, one end of the flange plate is fixedly connected to the side wall of the web, and the flange The bottom of the plate is formed with a positioning gap, the steel support block is embedded in the positioning gap and one end of it is fixedly connected with the flange plate, the other end of the steel support block and the side wall of the positioning gap form a reinforcement insertion opening, and the reinforcement support block and the bottom plate The area in the area is the first steel bar laying area, and the area inside the positioning gap above the steel bar support block is the second steel bar laying area. This patent also discloses the composite beam composed of the above-mentioned connectors, but the I-shaped steel web in the composite beam and the concrete Separation between them is easy to occur, especially the flange plate part of the I-beam, which also bears the longitudinal shear force of the entire steel-concrete composite beam under the gravity environment, and is more likely to be separated from the concrete, resulting in fracture or crack of the composite beam production

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