Lattice type steel reinforced concrete superposed beam

Abstract

The invention discloses a lattice type steel reinforced concrete superposed beam, and belongs to the field of architectural structures. The lattice type steel skeleton of the lattice type steel reinforced concrete superposed beam consists of combined profile steels and reinforcing steel bars; the combined profile steels are formed by connecting upper square steel pipes with middle and bottom profile steel pieces; the reinforcing steel bars consist of upper reinforcing steel bars and lower reinforcing steel bars; the upper reinforcing steel bars are arranged above the upper square steel pipes; the lower reinforcing steel bars are arranged at the lower parts of the combined profile steels; vertical inner stirrups are hooped around the reinforcing steel bars above the upper square steel pipes of the combined profile steels and the bottom profile steel pieces or the reinforcing steel bars below the bottom profile steel pieces to form a cage; concrete is cast in casting holes of the square steel pipes of the lattice type combined profile steels and a transverse outer stirrup hooped cage to form a prefabricated lattice type steel reinforced concrete lower beam; after a prefabricated floor is built on the formed prefabricated lattice type steel reinforced concrete lower beam, a lattice type steel reinforced concrete upper beam is cast in situ to form an integral superposed beam. The lattice type steel reinforced concrete superposed beam improves the torsion resistance, satisfies the bearing capacity requirement of the beam body in the construction and use phase, and effectively increases the building clearance.

Description

technical field [0001] The invention relates to a lattice type steel-reinforced concrete composite beam, which belongs to the field of building structures. Background technique [0002] In the prefabricated or prefabricated integral residential system, a layer of concrete is poured on the top of the prefabricated beam to form a composite beam. The composite beam also bears the load transmitted by the floor during construction, and if the beam is subjected to lateral compression, the problem of torsional resistance should also be considered. The commonly used composite beams are generally reinforced concrete structures, which are integrated with the cast-in-place part through the steel bars protruding from the lower prefabricated part, or integrated into a whole by pouring concrete on the upper part of the U-shaped groove of the prefabricated part. During the cast-in-place construction stage, Cast-in-place concrete has no bearing capacity, so it is necessary to add supports;...

AI Technical Summary

Problems solved by technology

The commonly used composite beams are generally reinforced concrete structures, which are integrated with the cast-in-place part through the steel bars protruding from the lower prefabricated part, or integrated into a whole by pouring concrete on the upper part of the U-shaped groove of the prefabricated part. During the cast-in-place construction stage, Cast-in-place concrete has no bearing capacity, so it is necessary to add supports; in addition, reinforced concrete beams have their own inherent disadvantages: their span-to-height ratio is smaller than that of steel concrete structures, and the height of beams in long-span structures will definitely affect the headroom of the building

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