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

Abstract

The invention provides a rigid connection joint of a cold-bending multi-cavity steel tube concrete special-shaped column and a U-shaped combination beam. The machining method is described in that a thin-walled steel plate is machined to be a core column steel tube in cold-bending and welding methods; then, the side surfaces of the core column steel tube is taken as column-rib connection surfaces with the core column steel tube as the center; U-shaped members formed by cold bending are welded; end-column steel tubes are welded with flange connection boards and multiple sleeves; above-mentionedprefabricated members are finished, delivered to the site and welded with negative-bending longitudinal bars; then, the prefabricated members are connected with cold-bending U-shaped steel beams together; next, cavities of steel tubes are filled with concrete in order to manufacture the rigid connection joint of an in-line, L-shaped, T-shaped, or cross-shaped cold-bending multi-cavity steel tube concrete special-shaped column and a U-shaped steel beam. The U-shaped steel beam serves as a template. There is no need to install any template for concrete pouring. The factory prefabrication processcan help reduce construction time. Additionally, the joint is good in mechanical property, convenient in construction and cost-effective and reasonable. The joint has a joint form with a combinationstructure which enjoys 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. Its 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 special-shaped steel tube concrete columns and their frame joints makes their economic performance lower than that of special-shaped reinforced concrete column frame structures. The confinement effect of concrete will have an adverse effect on the overall bearing capacity and ductility of the special-shaped concrete-filled steel tube frame structure

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