Corner reinforced steel-reinforced concrete-filled steel tubular composite column and its method

Abstract

The invention relates to a corner-reinforced steel bone-steel tube concrete composite column which belongs to the technical field of building construction. The angle-reinforced steel bone-steel tube concrete composite column comprises a steel tube (1), angle steels (2), welded reinforcing steel bars (3), welded steel plates (4), longitudinal ribs (5), bent ribs (6), steel tube internal core concrete (7) and composite layer concrete (8), wherein the steel tube internal core concrete (7) is filled in the steel tube (1), the bent ribs (6) are welded on the inner side of the angle steels (2), the welded reinforcing steel bars (3) or the welded steel plates (4) are welded on the outer side of the angle steel (2) to form a steel frame, and the longitudinal ribs (5) are bound with the welded reinforcing steel bars (3) or are welded with the welded steel plates (4); and the steel frame is arranged on the outer side of the steel tube (1), and the composite layer concrete (8) is filled between the steel frame and the steel tube (1). According to the corner-reinforced steel bone-steel tube concrete composite column disclosed by the invention, the angle steel is sectional steel, is formed by rolling and is good in ductility; the bent ribs are welded on the inner side of the angle steel so as to reinforce the anchorage of the steel frame and the composite layer concrete, improve the stress performance and the ductility of the corner portions of the composite column and also improve the bearing capacity and the seismic resistance of a component; and the bent ribs are arranged in the height direction of the angle steel at intervals so as to save costs.

Description

technical field [0001] The invention relates to a steel tube concrete composite column and its method, in which the stirrups are replaced by a steel skeleton formed by welding the inner side of the angle steel with bent bars and the outer side is welded by welded steel bars or welded steel plates. Background technique [0002] With the rapid development of society, people's demand for high-rise buildings and even super high-rise buildings is becoming more and more urgent. As a steel-concrete composite structure, steel tube concrete structures have been widely used in high-rise and super high-rise buildings due to their excellent performance. However, the concrete-filled steel tube structure cannot infinitely meet the design requirements of high-rise buildings in different intensity zones, especially super high-rise buildings. This requires a new structural form to support the development of the building, so the concrete-filled steel tube composite member was produced. [000...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to improve the compressive bearing capacity and seismic performance of the rectangular concrete-filled steel tube composite column, delay the damage at the corner of the composite reinforced concrete section due to stress concentration; Combined with the interaction of reinforced concrete to improve the fire resistance of components

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