Hole-expanding type steel structure beam column node in short T-shaped steel connection and connection method of hole-expanding type steel structure beam column node

Abstract

The invention relates to a hole-expanding type steel structure beam column node in short T-shaped steel connection. The hole-expanding type steel structure beam column node comprises two pieces of short T-shaped steel, a steel column and an H-shaped steel beam of which the end is vertically connected to a flange plate of the steel column, wherein a web plate of the short T-shaped steel is connected with the flange plate of the H-shaped steel beam; and the flange plate of the short T-shaped steel is connected with the flange plate of the steel column. The hole-expanding type steel structure beam column node is characterized by also comprising a flange steel cushion plate, wherein the flange steel cushion plate connects the web plate of the short T-shaped steel and the flange plate of the H-shaped steel beam by using a friction type high-strength bolt; the flange plate of the short T-shaped steel is connected with the flange plate of the steel column by using the friction type high-strength bolt; and a bolt hole in the web plate of the short T-shaped steel is a long circular hole. The invention also relates to a connection method of the hole-expanding type steel structure beam column node in the short T-shaped steel connection. The steel structure beam column node has quite high ductile deformation capacity and excellent energy-dissipation capacity; and the brittle failure of the steel beam or the steel column in a node area under the action of a seldom-occurring earthquake can be prevented.

Description

technical field [0001] The invention relates to a beam-column node of a reamed steel structure connected by short T-shaped steel and a connection method thereof, belonging to the technical field of civil engineering. Background technique [0002] Good ductility is the key factor to ensure that the structure does not collapse under strong earthquakes, and the ductility of joints is a key factor affecting the overall ductility of the structure. Before the Northridge (Northridge) earthquake in the United States in 1994, bolted and welded connections (flange plate welding, web bolted connection) were the commonly used forms of beam-to-column connections in steel frame structures. However, in the Northridge (Northridge) earthquake in the United States in 1994 and the Hanshin earthquake in Japan in 1995, the steel frame that was once considered to have good seismic performance suffered a lot of damage, most of which were caused by beam-column bolted joints. Brittle fracture (that...

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Problems solved by technology

[0005] For high-intensity fortified earthquake areas, the applicant has applied for and obtained authorized patents (Patent No.: 201020181041.2, 201010164386.1) which disclose a new type of easily repairable steel structure beam-column joint, which can better solve the traditional beam-column connection Insufficient ductility and brittle failure of the joints are easy to repair after the earthquake; however, the easily repairable steel structure beam-column joints are only semi-rigid connections, and their ductility and energy dissipation capacity can be further improved

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