An easy-to-assemble I-shaped column weak shaft separation type double T-shaped piece connection structure

Abstract

The invention discloses an H-shaped column minor axis separation type double-T-shaped-piece connecting structure easy to assemble. The H-shaped column minor axis separation type double-T-shaped-piece connecting structure easy to assemble comprises an H-shaped frame column, an H-shaped frame beam, a first T-shaped reinforcing piece, a second T-shaped reinforcing piece, a first T-shaped connecting piece and a second T-shaped reinforcing piece. One end of the first T-shaped reinforcing piece is connected with a web and two flanges of the H-shaped frame column 1, the other end of the first T-shaped reinforcing piece is connected with one end of the first T-shaped connecting piece, and the other end of the first T-shaped connecting piece is connected with an upper flange of the H-shaped frame beam. One end of the second T-shaped reinforcing piece is connected with a web and two flanges of the H-shaped frame column, the other end of the second T-shaped reinforcing piece is connected with one end of the second T-shaped connecting piece, and the other end of the second T-shaped connecting piece is connected with a lower flange of the H-shaped frame beam. The webs of the column are not prone to deformation, force transmission is definite, the stress performance is good, construction and transportation are convenient, and rigid connection in the minor axis direction of the column is achieved thoroughly.

Description

technical field [0001] The invention relates to a node connection structure, in particular to an easy-to-assemble I-shaped column weak shaft separation type double T-shaped piece connection structure. Background technique [0002] In the earthquakes in recent years, although the overall collapse of the steel frame structure did not occur, a large number of brittle failures occurred, especially the damage near the beam-column joints was more serious. After the Northridge earthquake, many countries have done a lot of research on the I-shaped beam-column joints, but the research results are mainly concentrated in the direction of the strong axis of the I-shaped column, while the research on the weak axis connection is relatively less. [0003] In my country, a large number of I-shaped column weak-axis wedge-shaped stiffened plate connections belonging to the former Northridge connection exist in actual projects. The method is given in clauses 8.3.4 to 8.3.7 of "Technical Regula...

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Problems solved by technology

[0006] 1) When the weak-axis beam is directly connected to the column web, the column web is prone to out-of-plane deformation, which may cause damage to the column web

[0007] 2) If an I-shaped beam-column is used, due to the existence of the beam-column flange, there is no operating construction space for bolt tightening and pre-tensioning, and it is difficult to realize the weak shaft connection by bolt connection, which is not easy to meet the assembly requirements

[0008] 3) Rigid connection of three types of I-shaped columns with weak shafts and cantilever beam sections given in "Multiple and High-rise Civil Building Steel Structure Joint Structure Details" 01 (04) SG519, the cantilever beam section is welded to the column web, this form Due to the existence of the cantilever beam section, the transportation and installation are inconvenient

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