Prestressed tooth hole-shaped web T-shaped steel reinforced concrete composite beam

Abstract

The invention discloses a prestressed tooth hole-shaped web T-shaped steel reinforced concrete composite beam, and belongs to the field of building components. The prestressed tooth hole-shaped web T-shaped steel reinforced concrete composite beam is composed of a prefabricated profile steel framework, a prefabricated steel reinforced concrete lower beam and a cast-in-place steel reinforced concrete upper beam. The prefabricated profile steel framework is composed of full-length tooth hole-shaped web T-shaped steel, prestressed steel bars and common constructional steel bars. A tooth hole-shaped web is provided with a lap joint rod, wherein the two sides of the lap joint rod extend outward perpendicularly. The prestressed steel bars and the common constructional steel bars are symmetric about the full-length tooth hole-shaped web, arranged around a cross stay bar and hooped through transverse stirrups to form a cage, and the cage is connected with the T-shaped steel integrally. Concrete is poured along tooth holes of the web and the transverse stirrup cage to form the prefabricated steel reinforced concrete lower beam. On the spot, the steel reinforced concrete upper beam is cast in place on the lower beam along the top surface of the T-shaped steel to form the composite beam, or the cast-in-place steel reinforced concrete upper beam and a floor cast-in-place layer are integrally formed. According to the design, the self weight of a beam body is reduced, the resultant force between the poured concrete and the profile steel is enhanced, and the bearing capacity and anti-seismic property of the T-shaped steel reinforced concrete composite beam are improved.

Description

[0001] The invention relates to a prestressed perforated web T-shaped steel-concrete composite beam, which belongs to the field of building components. Background technique [0002] With the rapid development of the construction industry, the existing traditional steel structure, wood structure, masonry structure and reinforced concrete structure can no longer meet the needs of development. The steel-concrete composite beam structure developed in recent years has better performance than traditional beams. However, the existing steel concrete beams are basically a combination of single steel and concrete. With the increase of the span of the building beams or the increase of the load, it has gradually shown its shortcomings. Therefore, it is necessary to develop beams that can apply to different spans. Compared with traditional steel concrete structural beams, the combined structural beams with higher bearing capacity, higher rigidity and better seismic performance can meet the ...

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Problems solved by technology

[0002]With the rapid development of the construction industry, the existing traditional steel structure, wood structure, masonry structure and reinforced concrete structure can no longer meet the needs of development. The steel-concrete composite beam structure has better performance than traditional beams. However, the existing steel-concrete beams are basically a combination of single steel and concrete. For this reason, it is necessary to develop composite structural beams that can be applied to different spans and loads, and to obtain composite structural beams with higher bearing capacity, greater rigidity, and better seismic performance than traditional steel concrete structural beams, so as to meet the needs of different heights. , span building requirements

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