Rigid joint of cold-bending multi-cavity steel tube concrete special-shaped column and H-shaped steel beam

Abstract

The invention provides a rigid joint of a cold-bending multi-cavity steel tube concrete special-shaped column and an H-shaped steel beam. According to a machining method thereof, a thin-wall steel plate is machined to be a core-column steel tube in cold-bending and welding manners. Moreover, the core-column steel tube is taken as the center. The side surfaces of the core-column steel tube are taken as column-limb connecting surfaces and orderly welded with U-shaped members formed by cold bending. Then, the end part of the column steel tube is welded with flange connection boards and short steel beams. Pre-fabricated members are finished and conveyed to the field. Splicing and assembly between the pre-fabricated members and framework beams are finished. Then, cavities of pipe bodies are filled with concrete in order to prepare a ridge joint of an in-line, L-shaped, T-shaped or cross-shaped cold-bending multi-cavity steel tube concrete special-shaped column and the H-shaped steel beam. From perspectives of machining efficiency and increase in cost-effectiveness, the joint is good in mechanical performance, convenient in construction, and is cost-effective and reasonable and has a joint form with a combined structure having a promising application prospect.

Description

technical field [0001] The invention belongs to the field of building structural components, in particular to a beam-column node of a steel-concrete composite structure. Background technique [0002] Special-shaped columns are currently widely used in buildings such as residences, apartments, and dormitories. The special-shaped columns are flush with adjacent walls, making the interior space of the building regular, which is conducive to furniture placement and improves the efficiency of indoor space utilization. However, the seismic design of special-shaped reinforced concrete columns commonly used at present is relatively strict, and the design indicators such as maximum service height and column axial compression ratio are far lower than ordinary rectangular reinforced concrete columns. The joints are often the weak link of the special-shaped column frame, which is an important factor to determine the mechanical performance of the special-shaped column frame structure sys...

AI Technical Summary

Problems solved by technology

[0003] However, the relatively high steel consumption of the traditional special-shaped concrete-filled steel tube column-H-shaped steel beam rigid joint makes its economic performance lower than that of the special-shaped reinforced concrete column frame structure

The traditional outer ring beam joints occupy a larger building space, while the inner ring joints affect the performance of concrete due to the occupation of the internal space of special-shaped columns

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