Rigid connection column base of cold-bent multi-cavity steel tube special-shaped concrete column

Abstract

The invention provides a rigid connection column base of a cold-bent multi-cavity steel tube special-shaped concrete column. A processing method of the rigid connection column base comprises steps asfollows: a core column steel tube of the special-shaped column is processed from a thin-wall steel plate through cold bending and welding, cold-bent formed U-shaped components are sequentially weldedby utilizing the core column steel tube as a center and side surfaces of the core column steel tube as column limb connecting surfaces, steel plates are welded on inner walls of cavities of the tube bodies, and the multi-cavity steel tube is fixed on a concrete foundation with reinforcing steel bars inserted. Bending moment borne by the multi-cavity steel tube can be effectively transmitted to concrete in the column by the welded steel plates and then is transmitted to the concrete foundation through basic steel dowels; meanwhile, column shear force can be transmitted to the foundation throughthe concrete in the column. The whole member is good in mechanical performance, stress is simple, the force transmission path is clear and reasonable, the problem about connection of the cold-bent multi-cavity steel tube special-shaped concrete column and the foundation is solved, meanwhile, industrialized production of main components can be realized, construction is convenient, and time is saved.

Description

technical field [0001] The invention belongs to the field of building structural components, in particular to a steel-concrete composite structure rigid connection column base. Background technique [0002] Special-shaped columns are currently widely used in buildings such as residences, apartments, and dormitories. The special-shaped columns are flush with adjacent walls, making the interior space of the building regular, which is conducive to furniture placement and improves the efficiency of indoor space utilization. However, the seismic design of special-shaped reinforced concrete columns commonly used at present is relatively strict, and the design indicators such as maximum service height and column axial compression ratio are far lower than ordinary rectangular reinforced concrete columns. Compared with special-shaped reinforced concrete columns, the foot design of cold-formed multi-cavity concrete-filled steel tube special-shaped columns has certain characteristics. ...

AI Technical Summary

Problems solved by technology

However, the seismic design of special-shaped reinforced concrete columns commonly used at present is relatively strict, and the design indicators such as maximum service height and column axial compression ratio are far lower than ordinary rectangular reinforced concrete columns.

Images