Truss concrete superposed beam

Abstract

The invention discloses a truss concrete superposed beam comprising a prefabricated layer and a superposed layer, wherein the prefabricated layer comprises a truss reinforcing mesh and a concrete layer at the lower part of the truss reinforcing mesh; the truss reinforcing mesh comprises a truss, erection steel bars and stirrups; the truss comprises a lower chord member, an upper chord member and a web member for connecting the lower chord member and the upper chord member; the upper chord member of the truss is positioned above the concrete of the prefabricated layer; the superposed layer is a cast-in-place concrete layer positioned on the prefabricated layer. The truss concrete superposed beam disclosed by the invention has the advantages of convenience and quickness in construction without temporary shoring, capability of providing a relatively longer laying length for a floor slab, quality guarantee, good integrity and good economical efficiency.

Description

Technical field [0001] The invention relates to the technical field of building components, in particular to a truss concrete composite beam. Background technique [0002] The construction of the floor is the main control item in the construction of the building structure, which has an important direct impact on the construction period, quality, cost and labor demand of the project. In the most widely used beamed floor, the beam is the support of the slab, and the construction of the slab is directly affected by the beam. Among the commonly used concrete beams at present: the construction of cast-in-place beams requires temporary supports, supporting templates, and large quantities of on-site steel bars, which causes problems such as slow construction speed, high labor demand and difficult control of construction quality; ordinary concrete laminated beams Although there is no need to support formwork, temporary supports, penetrating ribs and lashing are still required. Due to th...

AI Technical Summary

Problems solved by technology

Among the commonly used concrete beams at present: during the construction of cast-in-place beams, temporary supports, supporting formwork, and large amount of on-site reinforcement work are required, which brings problems such as slow construction speed, high labor demand, and difficult control of construction quality; ordinary concrete composite beams , although there is no need for formwork support, temporary support, reinforcement and binding are still required, and because of the existence of stirrups, the shelf length of the assembled (integral) floor slab is very limited, which almost directly determines that the floor must be provided with temporary support. Then the construction speed of the whole floor is severely restricted, and the demand for labor and the cost will also increase to a certain extent.

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