A giant rectangular cross-section CFST column

Abstract

The invention discloses a giant concrete-filled steel pipe column with a rectangular cross-section, which comprises a rectangular steel pipe. The rectangular steel pipe is provided with several steel partition layers from bottom to top, and the outer circumference of the steel partition layer is closely attached to the inner wall of the rectangular steel pipe. , and the middle part is provided with a rounded rectangular through hole, a number of vertical stiffeners are arranged between the steel clapboard layers, horizontally distributed vertical pull plates are arranged between two oppositely arranged vertical stiffeners, rectangular steel pipes, Concrete is poured into the space enclosed by the steel diaphragm layer and the vertical stiffeners. By setting vertical stiffeners, steel partition layers and horizontally distributed vertical tension plates, the concrete in the giant rectangular cross-section CFST column can be effectively divided, and its ability to be restrained can be enhanced, thereby effectively improving the overall bearing capacity and deformation. In addition, the vertical stiffeners can not only bear the vertical load, but also reduce the wall thickness of steel pipes and save materials, which effectively meets the actual needs of large 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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