Multi-cavity spliced concrete-filled steel tube combined column and splicing method

Abstract

The invention discloses a multi-cavity spliced concrete-filled steel tube combined column and a splicing method. A concave part is formed in each multi-cavity steel tube, and then two multi-cavity steel tubes are fixedly connected together through connecting pieces. The multi-cavity spliced steel tubes are as wide as a wall, it is avoided that edges and corners protrude out of indoor columns, the use area and attractiveness of a room can be increased, the second moment of the column area is large, and compared with a common concrete-filled steel tube co column, the bearing capacity is high, ductility is good, and the lateral resistant performance is high. The multi-cavity spliced concrete-filled steel tube combined column is spliced through multiple steps, hoisting is convenient when a large combined column is needed, limits of space and territory are avoided, and the applicability of the multi-cavity spliced concrete-filled steel tube combined column is improved.

Description

technical field [0001] The invention belongs to the field of steel pipe concrete composite columns of multi-storey and high-rise buildings, and in particular relates to a multi-cavity splicing type steel pipe concrete composite column and a splicing method. Background technique [0002] With the economic globalization and the improvement of urbanization level, the urban population density is gradually increasing, which makes a large number of high-rise buildings emerge continuously. There is an urgent need for new technologies to support the design and construction of high-rise and multi-storey buildings. [0003] Concrete filled steel tube utilizes the interaction between the steel tube and concrete in the process of stress, that is, the restraint of the steel tube on the concrete makes the concrete in a complex stress state, so that the strength of the concrete is improved, and the plasticity and toughness are greatly improved. At the same time, after the steel pipe is fi...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the above-mentioned deficiencies, provide a multi-cavity splicing concrete-filled steel tube composite column and a splicing method, solve the problem of protruding edges and corners in the traditional column chamber, improve the bearing capacity and ductility of the multi-cavity concrete-filled steel tube composite column, and delay Or avoid the reduction of component stiffness, bearing capacity and ductility due to local buckling of the steel pipe wall plate, give full play to the performance of the material, and facilitate assembly

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