Fabricated concrete-filled steel tube combination column and splicing method

Abstract

The invention discloses a fabricated concrete-filled steel tube combination column and a splicing method. The fabricated concrete-filled steel tube combination column comprises a concrete-filled steeltube prefabricated part which is spliced into a whole by means of being defined by at least two concrete-filled steel tube columns, and after defining and splicing, the section of the concrete-filledsteel tube prefabricated part is externally square and internally circle. Through holes are formed in a rectangular steel plate and an arc-shaped steel plate, the rectangular steel plate and the arc-shaped steel plate are formed through welding, and then reinforcements are welded to the internally-sunken side of the arc-shaped steel plate. The multiple concrete-filled steel tube columns forms theconcrete-filled steel tube prefabricated part with the section being externally square and internally circle in defined and spliced modes, and then screws are connected into the through holes formedin the rectangular steel plate and the arc-shaped steel plate in an inserted mode to be fixed. A pouring material is injected into the concrete-filled steel tube prefabricated part. According to the fabricated concrete-filled steel tube combination column, the constraint effect of internal circular steel tubes on the pouring material in a core area can be ensured, and the advantage of the rectangular section on building arrangement can also be developed.

Description

technical field [0001] The technical field of the data building structure of the present invention, in particular relates to a fabricated steel pipe concrete composite column and a splicing method. Background technique [0002] As a new type of high-efficiency composite member, the CFST column has been more and more widely used in practical engineering because it can give full play to the material properties of both steel and concrete. At present, the common forms of CFST columns include rectangular CFST columns and circular CFST columns. Compared with circular CFST columns, rectangular CFST columns are more suitable for building layout and improve space utilization efficiency, but the steel pipes in rectangular CFST columns have poor confinement effect on concrete, which restricts its application to a certain extent. In addition, steel pipes in CFST columns can be used as templates for pouring inner concrete, which brings convenience to construction. However, the fire res...

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Problems solved by technology

However, the fire resistance of steel pipes is not as good as that of concrete, which will have an adverse effect on the components in a fire environment; the corrosion resistance of steel pipes is also not as good as that of concrete, which will increase its later maintenance costs, which is not conducive to the further popularization and application of steel pipe concrete columns

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