Assembly structure of prefabricated concrete beam and concrete-filled steel tube column

Abstract

The invention discloses an assembly structure of a prefabricated concrete beam and a concrete-filled steel tube column. The assembly structure comprises the concrete-filled steel tube column, a concrete-filled steel tube bracket, the prefabricated concrete beam, beam end pre-buried steel and a connection plate, wherein the concrete-filled steel tube bracket is welded with a side part of the concrete-filled steel tube column; the concrete-filled steel tube bracket is step-shaped; the concrete-filled steel tube bracket comprises bracket-shaped steel and bracket concrete filled in the bracket-shaped steel; a plurality of opposite-pull bolt holes are formed in the side surface of the bracket-shaped steel; the prefabricated concrete beam comprises the beam end pre-buried steel and prefabricated reinforced concrete; the beam end pre-buried steel is step-shaped and is matched with the shape of the concrete-filled steel tube bracket; a plurality of opposite-pull bolt holes are also formed in the side surface of the beam end pre-buried steel; the connection plate is arranged on the side surface of the bracket-shaped steel and the beam end pre-buried steel and is locked and fastened by a plurality of opposite-pull bolts. The assembly structure of the prefabricated concrete beam and the concrete-filled steel tube column is high in bearing capacity, high in earthquake-resistant ductility, high in node energy dissipation capacity, convenient to construct and high in construction quality, and can provide effective restraint on the concrete.

Description

【Technical field】 [0001] The invention belongs to the technical field of prefabricated assembled structures in civil engineering, and in particular relates to an assembled structure of prefabricated concrete beams and steel pipe concrete columns. 【Background technique】 [0002] The traditional cast-in-place construction method has a low degree of industrialization, poor construction conditions, time-consuming and labor-intensive, is not conducive to energy conservation and environmental protection, common quality problems are difficult to eradicate, and safety accidents also occur from time to time. The use of prefabricated structures can save energy, water, and materials, greatly reduce construction waste, reduce noise pollution, reduce labor consumption and intensity, effectively improve the construction environment, and improve project quality. [0003] Most of the joints of traditional reinforced concrete beams and concrete-filled steel tube columns are connected by stee...

AI Technical Summary

Problems solved by technology

[0003] Most of the joints of traditional reinforced concrete beams and steel pipe concrete columns are connected by steel bars around, and formwork needs to be installed on site, the binding and connection of steel bars are complicated, and the construction is difficult; the cross-sectional size of the joint joints is large

In the joint assembly structure of the steel pipe concrete column connection, it is mainly connected to the steel beam. The connection uses end plates and bolts, and is connected to the steel pipe outside the column. The steel beam is prone to buckling and has poor fire resistance

[0004] In the connection between precast concrete beams and reinforced concrete columns, the core part of the joint is mainly anchored by steel bars and then poured concrete. This method requires wet work on site, and the columns still need to be connected by sleeve grouting. The construction is troublesome and the quality is difficult to guarantee.

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