T-shaped web-clamped-by-cover-plate connecting device for beam-column joint of fabricated steel structure square steel tube column

Abstract

The invention provides a T-shaped web-clamped-by-cover-plate connecting device for a beam-column joint of a fabricated steel structure square steel tube column, and belongs to the field of structuralengineering. The connecting device comprises a column and a beam. The column is formed by welding the square steel tube column, stiffening ribs, a supporting plate and a flange plate in a factory, wherein an upper column body is formed by welding the square steel tube column and the flange plate in the factory; an H-shaped steel beam, the square steel tube column, T-shaped steel plates, L-shaped steel plates, cover plates and the supporting plate are provided with bolt holes corresponding in position, and the H-shaped steel beam can be connected with the T-shaped steel plates and the L-shapedsteel plates through bolts and the column after being conveyed to a construction site. The supporting plate is welded on the side surface of the column and is connected with the lower flange of the beam through bolts, so that in the lever mechanism formed at the joint connection position, the supporting plate also has anti-bending arm of force and bears a part of beam end bending moment, and a plastic hinge is moved outwards; and the H-shaped steel beam is placed on the supporting plate, the H-shaped steel beam can be accurately positioned, and meanwhile, the joint stability is improved. Boltassembling is adopted on site, the construction speed is greatly increased, the construction quality is greatly improved, industrialized production is realized, and on-site rapid assembling is realized.

Description

technical field [0001] The invention relates to an assembled steel structure square steel pipe column-beam-column joint T-shaped cover plate clamping web plate connection device, which belongs to the technical field of structural engineering. Background technique [0002] The prefabricated steel structure system refers to the building produced by manufacturing housing units or components according to uniform and standard building part specifications, and then transporting them to the construction site for assembly in place. It is characterized by light building weight, energy saving and environmental protection, fast construction speed, and high degree of industrialization. It can solve many problems such as low level of construction industrialization, low labor productivity in housing construction, and low quality of traditional housing products, and adapts to the development of my country's construction industry. [0003] The beam-column joint is the most important joint i...

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Problems solved by technology

[0003] The beam-column joint is the most important joint in the fabricated steel structure system, which directly affects the construction speed and the degree of assembly of the structure. Therefore, the beam-column joints should be connected with high-strength bolts that are easy to operate as much as possible, and the bolts should be arranged as far as possible. The ground is easy for workers to fasten on site. The beam-column joints used in the existing engineering examples have the following shortcomings: In the traditional beam-column fully welded joints, the upper and lower flanges of the beam and the web and the column are welded on site. Although this connection method is a rigid connection , but the ductility of the joints is poor, brittle failure is prone to occur in earthquakes, and welding is required on site, which greatly affects the construction speed and quality. It is not used in multi-story fabricated steel structures. At the same time, due to the large welding area, it is easy to produce large residual Stress, which affects the mechanical performance of nodes

In the traditional bolted and welded joint connection, the upper and lower flanges of the beam end are welded to the column on site, and the web at the beam end is bolted to the column through a shear plate. This connection method requires on-site welding, which greatly affects the construction speed and quality, and the construction The program is complex and it is not easy to achieve rigid connection

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