Giant rectangular-section concrete filled steel tubular column

Abstract

The invention discloses a giant rectangular-section concrete filled steel tubular column. The giant rectangular-section concrete filled steel tubular column comprises a rectangular steel tube in which a plurality of steel separator layers are arranged from bottom to top; the periphery of each steel separator plate is closely fitted with an inner wall of the rectangular steel tube and a filleted-corner rectangular through hole is formed in the middle of the steel separator plate; a plurality of vertical stiffening ribs are arranged between the steel separator layers; vertical pull plates distributed horizontally are arranged between two opposing vertical stiffening ribs; concrete is poured into spaces defined by the rectangular steel tube, the steel separator layers and the vertical stiffening ribs. By means of the vertical stiffening ribs, the steel separator layers and the horizontally arranged vertical pull plates, the concrete within the giant rectangular-section concrete filled steel tubular column is effectively divided and the restrained ability of the concrete is enhanced, and therefore, the overall bearing capability and the overall deformability are effectively improved and the strength and the service life of a building are increased; additionally, the vertical stiffening ribs are capable of bearing vertical loads, and also functioning in reducing the wall thickness of the steel tube and saving materials, thereby practically meeting the actual requirements of huge buildings.

Description

technical field [0001] The invention relates to the field of building structures, in particular to a giant concrete-filled steel tube column with a rectangular cross-section. Background technique [0002] Due to the advantages of high strength, high ductility and energy dissipation capacity, and convenient construction, rectangular cross-section concrete-filled steel tubular columns have been widely used in modern high-rise and super high-rise buildings. The cross-sectional view of the existing steel tube concrete column is as follows: figure 1 As shown, it includes a rectangular steel pipe 101 and a core concrete 102 inside the rectangular steel pipe 101. The steel pipe concrete column of this structure plays an effective supporting role for small and medium-sized buildings. Larger and more complex structures, in the actual application process of concrete filled steel tube columns of this kind of structure, due to the action of repeated horizontal loads, the bottom or top ...

AI Technical Summary

Problems solved by technology

The cross-section of the existing steel tube concrete column is as follows: figure 1 As shown, it includes a rectangular steel pipe 101 and a core concrete 102 inside the rectangular steel pipe 101. The steel pipe concrete column of this structure plays an effective supporting role for small and medium-sized buildings. Larger and more complex structures, in the actual application process of concrete filled steel tube columns of this kind of structure, due to the action of repeated horizontal loads, the bottom or top of the column is prone to local buckling of the rectangular steel tube 101 or cracking of the weld seam. The column is also easily damaged due to excessive compression; in addition, when the composite torsion of the CFST column is severe, the 102 oblique cracks in the core concrete in the middle of the column may also develop into an oblique fracture surface, and the column will produce oblique punching under axial compression. Bond failure due to movement, thus affecting the strength and life of the building, failing to meet the actual needs of large buildings

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