A beam-column joint connection device for a multi-story fabricated steel structure system

Abstract

A beam-column node connection device for a multi-high-rise fabricated steel structure system, belonging to the technical field of structural engineering, including upper column flanges, node short column upper end flanges, node short column lower end flanges, lower column flanges, and upper box-shaped Column, node stub column, lower box column, I-beam, node stub column steel plate, node stub column transverse connection short steel plate, node stub column vertical connection steel plate and beam end vertical connection steel plate; upper box column and upper column The flanges are welded together at the factory. The node short column, the node short column steel plate, the node short column horizontal connection short steel plate and the node short column vertical connection steel plate are welded into one in the factory. The I-beam and the vertically connecting steel plate at the beam end are welded together in the factory. The welding part of the present invention can be completed in the factory, and the bolts are used for on-site assembly, the fastening work of the bolts is convenient and fast, the construction speed and quality are greatly improved, and it is suitable for the development of assembled steel structures. At the same time, the nodes of the present invention are rigid nodes, Good ductility and strong bearing capacity.

Description

technical field [0001] The invention relates to a beam-column joint connecting device of a multi-high-rise assembled steel structure system, belonging to the technical field of structural engineering. Background technique [0002] The multi-high-rise fabricated 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 the low level of construction industrialization in my country, low labor productivity in house construction, and low quality of traditional house products, and adapt to the development of my country's construction industry. [0003] The beam-column connection is the most important node in the multi-...

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Problems solved by technology

[0004] In the traditional fully welded beam-column joint, the upper and lower flanges of the beam and the web and the column are welded on site. Although this connection is a rigid connection, the ductility of the joint is poor, and brittle failure is prone to occur in earthquakes, and on-site welding is required, which greatly affects the construction. Speed ​​and quality are not suitable for multi-story fabricated steel structures. At the same time, due to the large area of ​​the weld, it is easy to generate large residual stress, which affects the mechanical performance of the joints

[0005] In traditional beam-column joints connected by high-strength bolts, the beam end seal plate and box-shaped columns are fastened and connected by high-strength bolts. When fastening, workers need to reach into the box-shaped columns. It is inconvenient to come, and at the same time, the screw holes will weaken the short column of the node, affecting its mechanical performance

[0006] 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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