Multi-cavity steel tube concrete superposed column and preparation method thereof

Abstract

The invention relates to a superposed column, particularly to a multi-cavity steel tube concrete superposed column and a preparation method thereof. The superposed column is prepared by the steps of: welding a steel plate and a steel tube, which are preprocessed with holes, vertically to obtain a multi-cavity steel tube; welding rivets on the external wall of the multi-cavity steel tube; binding a steel mesh formed by longitudinal steel bars and hoops on the outside of the multi-cavity steel tube; and supporting a template and pouring concrete to form the multi-cavity steel tube concrete superposed column, the inside of which is a multi-cavity steel tube concrete column and the outside of which is reinforced concrete. The superposed column solves the disadvantage that the hooping effect is reduced due to an oversize steel tube in a large-sized steel tube concrete superposed column. Moreover, compared with the traditional superposed column, the superposed column has much more flexible and diverse section forms, and thus the functions of a building can be fully utilized and the usable floor area is increased without lowering the carrying capacity of the superposed column.

Description

technical field [0001] The invention relates to a shear wall composite column, in particular to a multi-cavity steel pipe concrete composite column and a manufacturing method thereof. Background technique [0002] With the improvement of people's living standards, residents have higher and higher requirements for residential and office buildings, and high-rise and super high-rise buildings have gradually increased. In the large number of reinforced concrete high-rise buildings, the use of concrete-filled steel tube columns has been widely used. Its structural form not only effectively improves the bearing capacity of the internal concrete, but also overcomes the shortcomings of steel tube structures that are prone to local buckling. The effect of the combination of the two materials is far greater than the simple superposition of the two. However, with the maturity of CFST technology, its shortcomings are becoming more and more obvious. The emergence of CFST composite colu...

AI Technical Summary

Problems solved by technology

[0003] However, the use of concrete-filled steel tube composite columns in super high-rise buildings is not widely used. One of the reasons is that super high-rise buildings often require huge columns to bear huge loads. To increase the size of the section reduces the usable area of ​​the building and makes it inconvenient to use the space

In addition, steel pipes with huge cross-sectional dimensions reduce the hoop effect in traditional CFST columns when bearing loads, weaken the advantages of CFST inner columns, and reduce the bearing capacity of CFST composite columns

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