Beam-column joint of a layered fabricated steel structure

Abstract

The invention discloses a beam-column joint of a layered assembled steel structure, which comprises an upper-layer column (1), a lower-layer column (2), and a main beam (1) installed between the upper-layer column (1) and the lower-layer column (2). 3); a middle column (5) is welded at the junction of the main beam (3) with the upper column (1) and the lower column (2), and a main beam (3) is welded on one side of the middle column (5), Its upper and lower ends are respectively welded with an upper flange (51) of a central column and a lower flange (52) of the central column, and the bottom of the upper column (1) is welded with an upper column that is opposite to the upper flange (51) of the central column. A flange (11), the top of the lower column (2) is welded with a lower column flange (21) which is connected with the lower flange (52) of the central column. The invention has simple structure, direct force transmission, clear force of each part, convenient industrialized manufacturing and on-site assembly, greatly reduced on-site assembly workload, improved on-site assembly efficiency, and low comprehensive cost.

Description

technical field [0001] The invention relates to the field of prefabricated building processing and manufacturing, in particular to a beam-column node of a layered prefabricated steel structure. Background technique [0002] In the traditional fully welded beam-column joint, the upper and lower flanges of the beam and the web are welded to the column 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. The speed and quality are not suitable for fabricated steel structures. At the same time, due to the large welding area, it is easy to generate large residual stress, which affects the mechanical performance of the joints. [0003] 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, wor...

AI Technical Summary

Problems solved by technology

[0002] In the traditional fully welded beam-column joint, the upper and lower flanges of the beam and the web are welded to the column 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 welding area, it is easy to generate large residual stress, which affects the mechanical performance of nodes.

[0003] 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, and the bolt holes will weaken the short column of the node, affecting its mechanical performance

[0004] In the traditional bolted and welded joint connection, the upper and lower flanges of the beam and column 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. The program is complex and it is not easy to achieve rigid connection

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