Flat slab node structure suitable for steel pipe or concrete filled steel tubular column

Abstract

The invention relates to a flat slab node structure suitable for a steel pipe or a concrete filled steel tubular column, and belongs to the technical field of building structures. The flat slab node structure comprises an integrally cast steel connecting piece and a plurality of floor shear-resistant pieces, wherein the upper end of the cast steel connecting piece is butted with an upper column body, the lower end of the cast steel connecting piece is butted with a lower column body, and the upper column body and the lower column body are coaxial and form a vertical node central axis; the plurality of floor shear-resistant pieces are uniformly distributed around the node central axis in the circumferential direction and are fixedly connected with the side parts of the cast steel connecting piece, each floor shear-resistant piece horizontally extends towards the outer side of the cast steel connecting piece, and the extension direction perpendicularly intersects with the node central axis; and a plurality of studs penetrate through each floor shear-resistant piece, two groups of reinforcing steel bars which are fixedly connected with the side part of the cast steel connecting piece and are used for bending resistance of a floor are correspondingly arranged on each floor shear-resistant piece, the two groups of reinforcing steel bars are located on both sides of each floor shear-resistant piece respectively, and the length direction of the reinforcing steel bars is parallel to the horizontal extension direction of the corresponding floor shear-resistant piece. The structural strength is obviously increased, and mass production can be performed.

Description

technical field [0001] The invention relates to the technical field of building structures, in particular to a beamless floor node structure suitable for steel pipes or steel pipe concrete columns. Background technique [0002] Beamless floors are widely used in practical engineering, especially in multi-storey industrial and civil buildings. The biggest feature of this system is that there are no primary and secondary beams, but the floor is directly supported on the column, and the floor dead load is directly transmitted to the column through the floor. Thanks to this feature, its structural layout is flexible, it has a greater sense of space, and it can effectively increase the height of the building. In addition, during the construction process, the amount of formwork used is small, and the erection is simple, which facilitates the improvement of construction efficiency. [0003] However, the structural characteristics of the beamless floor also cause its weak points i...

AI Technical Summary

Problems solved by technology

The force transmission path is long, which is not conducive to the joint force of steel pipe and concrete

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