Combined beam and manufacturing method thereof

Abstract

The invention relates to the field of bridge construction, and discloses a combined beam. The combined beam comprises a concrete plate, wherein transverse steel bars are arranged in the concrete plateat intervals. The combined beam further comprises an inverted T-shaped steel beam, the inverted T-shaped steel beam comprises a web plate and further comprises a wing plate, wherein a connecting partis arranged on one side of the web plate, the connecting part is arranged in the concrete plate, the web plate is connected with the transverse steel bars through the connecting part, and the wing plate is connected with the web plate in a perpendicular mode. The invention further discloses a manufacturing method of the combined beam. The mode that the connecting part is connected with the transverse steel bars in the concrete plate is adopted in the combined beam and is compared with the mode that shearing force nails are adopted to achieve the connection between a steel plate and a concreteplate, the advantages of being high in shear stiffness, high in bearing capacity, good in ductility and the like; and in addition, the combined beam is simple in structure, convenient and fast to construct, high in cracking strength and good in durability. According to the combined beam and the manufacturing method thereof, the defects that when the mode that the shearing force nails are adoptedto achieve the connection between the steel plate and the concrete plate is adopted, the shear resistance and the bearing capacity of a connecting piece are low, the shear stiffness is low, and the ductility is poor are overcome, and the problems that the concrete plate is prone to cracking, and the durability is poor are solved.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a composite beam and a manufacturing method thereof. Background technique [0002] The composite beam is a beam structure composed of two different materials. The steel beam and the concrete slab are connected as a whole through shear connectors to bear the force together, which can give full play to the advantages of the steel in tension and the concrete slab in compression. It has the advantages of high bearing capacity, high rigidity, good seismic and dynamic performance, small component section size, and convenient construction. [0003] Traditional steel-concrete composite beams are composed of steel beams and reinforced concrete slabs, and are connected to the reinforced concrete slabs by welding shear studs on the upper flange of the steel beams. Steel-concrete composite beams can give full play to the characteristics of high tensile strength of steel beams and high com...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects existing in the prior art, the object of the present invention is to provide a composite beam and its manufacturing method, which can effectively solve the problem of low shear bearing capacity of the connecting piece, low Disadvantages such as low shear stiffness and poor ductility, and concrete slabs are prone to tensile cracking and poor durability

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