A Variable Stiffness Energy Dissipating Steel Structure Beam-Column Joint

Abstract

The invention discloses an energy-dissipation steel structure beam-column joint with variable rigidity suitable for various steel columns. a steel beam flange connecting plate and a steel beam web plate connecting plate are respectively arranged on at least one surface of a steel beam flange and a web plate at the beam-column joint; a plurality of strip-shaped bolt holes and arc-shaped bolt holes are respectively formed in the steel beam flange connecting plate and the steel beam web plate connecting plate; standard bolt holes with corresponding quantity are respectively formed in the steel beam flange and the web plate; the steel beam flange and the web plate are connected with the steel beam flange connecting plate and the steel beam web plate connecting plate through high-strength bolts; the steel beam flange connecting plate and the steel beam web plate connecting plate are in welded connection with the steel columns. According to the beam-column joint disclosed by the invention, when a rare occurrence earthquake occurs, beam ends can bidirectionally rotate within a certain angle range, a friction energy dissipation effect is generated, and the purpose of improving the structural earthquake-resistant performance is achieved. Under regular service conditions, the beam-column joint has enough bearing capacity and rigidity, so that functions in normal use are ensured. The requirement that the rigidity of the beam-column joint is variable is met by changing the amount or the performance level of connecting bolts connected with the steel beam flange.

Description

technical field [0001] The invention relates to a connection node between a steel beam and a steel column in a building structure, in particular to a variable rigidity energy-dissipating steel structure beam-column node suitable for various steel column structures. Background technique [0002] Due to its light weight, high strength, uniform material, convenient construction and installation, and short construction period, steel structures are widely used in high-rise buildings, long-span buildings, and industrial buildings. It is one of the most widely used building structures at present. In addition, with the continuous development of my country's industrialization level, the quality of structural steel has been continuously improved, and the cost has been continuously reduced. will be more extensively developed. [0003] However, my country is a country prone to earthquakes, and has high requirements for the seismic performance of building structures, especially the seism...

AI Technical Summary

Problems solved by technology

The above commonly used connection methods and structures are difficult to ensure controllable deformation energy dissipation capacity at the joints in actual engineering applications, and cannot accurately realize the design requirement that the deformation energy dissipation area must appear at the beam end

In addition, due to the poor plastic deformation ability of welds and high-strength bolts, it is easy to cause insufficient deformation at the joints, causing premature fracture and failure at the joints

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