A vertical external rib beam-column joint connection device suitable for fabricated steel structure system

Abstract

The invention belongs to the technical field of structural engineering and relates to a vertical outer rib beam-column joint connector applicable to prefabricated steel structural systems. The connector comprises a square steel column with a cantilever beam segment, an H-shaped steel beam with an upper flange extended out, and flitch plates; the square steel column with the cantilever beam segment comprises a square steel column, an H-shaped cantilever steel beam with a lower flange extended out and a triangular vertical outer rib; the H-shaped steel beam with the upper flange extended out is made by cutting off the partial lower flange and corresponding web of an H-shaped steel beam; all the square steel column with the cantilever beam segment, the H-shaped steel beam with the upper flange extended out and the flitch plates are prefabricated in a factory, bolt holes are reserved in corresponding positions, the square steel column with the cantilever beam segment and the H-shaped steel beam with the upper flange extended out are lapped on a construction site, the upper and lower flanges are connected through bolts, and the webs are connected through flitch plate bolts. The connector is convenient to manufacture in a factory and quick to assemble in situ with increased construction speed and quality, and a joint of the invention has good aseismic performance.

Description

technical field [0001] The invention relates to a vertical external rib beam-column joint connection device suitable for an assembled steel structure system, and belongs to the technical field of structural engineering. Background technique [0002] The prefabricated steel structure system can solve the shortcomings of traditional structural systems such as low construction efficiency, serious pollution, and difficult quality assurance, and can effectively alleviate the problems of severe overcapacity in my country's steel industry and excessive demand for housing. As the country with the largest construction scale and steel output in the world, China lags behind seriously in the development of housing steel structures. [0003] A lot of welding is used in the construction of traditional steel structure residential buildings, the construction speed is slow, and the pollution to the environment is serious. The most important thing is that the quality of the welds is not suita...

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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 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] For the traditional beam-to-column joint connection device with cantilever beam sections, although some research work has been carried out at home and abroad, there are only two splicing forms generally aimed at, that is, the web is connected by high-strength bolts through the pasting plate, and the flange is connected by high-strength bolts. The cover plate is connected or welded with high-strength bolts, and these two joints are not suitable for modular fabricated steel structures

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