Unribbed double-plate-connection concrete-filled steel tube combined special-shaped column

Abstract

The invention discloses an unribbed double-plate-connection concrete-filled steel tube combined special-shaped column. The unribbed double-plate-connection concrete-filled steel tube combined special-shaped column comprises a middle rectangular steel tube and at least two peripheral rectangular steel tubes. The middle rectangular steel tube is connected with each peripheral rectangular steel tube through two connecting steel plates with the same height as the steel tubes. The connecting steel plates are arranged vertically and are perpendicular to the side faces of the middle rectangular steel tube and the peripheral rectangular steel tubes. Concrete structures I are cast in the middle rectangular steel tube and the peripheral rectangular steel tubes correspondingly. A concrete structure II is cast in the space formed by the middle rectangular steel tube, each peripheral rectangular steel tube and the corresponding two opposite connecting steel plates in an enclosed mode. The cross section of a unit structure comprising the middle rectangular steel tube and two adjacent peripheral rectangular steel tubes is in an L shape. The unribbed double-plate-connection concrete-filled steel tube combined special-shaped column is high in bearing capacity, can be applied to high-rise buildings and meanwhile has good ductility and seismic performance.

Description

technical field [0001] The invention relates to a special-shaped column used in building structures, in particular to a composite special-shaped column with double-plate connection without ribs and steel pipe concrete. Background technique [0002] Special-shaped columns refer to vertical load-bearing members with L-shaped, T-shaped or cross-shaped cross-sections. Because the column limbs of the special-shaped column can be wrapped inside the wall, it overcomes the defect of the traditional frame column protruding at the corner of the house, which can not only save the building space, increase the usable area of ​​the building, but also make the building beautiful and convenient for flexible layout, so it is widely used Used in residential structures. As of 1999, more than 20 million square meters of residences with special-shaped column structures have been built nationwide, most of which use reinforced concrete special-shaped column structures. However, it has been found ...

AI Technical Summary

Problems solved by technology

[0004] At present, special-shaped steel-steel-steel-concrete composite columns mostly use single-slab-connected steel-steel concrete composite special-shaped columns, which have low bearing capacity and cannot be applied to high-rise buildings. This restricts the development of steel-steel concrete composite special-shaped columns, and its application fields are limited.

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