Flange friction type shape memory alloy rod self-restoring steel frame beam-edge column joint

Abstract

The invention discloses a flange friction type shape memory alloy rod self-restoring steel frame beam-edge column joint. The flange friction type shape memory alloy rod self-restoring steel frame beam-edge column joint comprises a steel column, a steel beam, a shape memory alloy rod, an L-shaped bracket, a shear plate and a friction energy dissipater, wherein the steel beam is located on one side of the steel column, the shape memory alloy rod transversely penetrates through the steel column, the L-shaped bracket is located at the inner side of a steel beam flange, the shear plate is located in the middle position of a steel beam web plate, and the friction energy dissipater is located at the outer side the steel beam flange; the friction energy dissipater comprises a steel plate, an energy-dissipation friction sheet and high-strength bolts, wherein the steel plate is arranged at the outer side of the steel beam flange, the position between the steel plate and the steel beam flange is filled with the energy-dissipation friction sheet, and the high-strength bolts penetrate the steel beam flange to connect the steel plate, the energy-dissipation friction sheet and the L-shaped bracket. According to the flange friction type shape memory alloy rod self-restoring steel frame beam-edge column joint, the stable energy-dissipation capacity of the joint can be improved significantly, and the self-restoring performance of the joint is achieved at the same time by utilizing super elasticity of shape memory alloy; and convenience of floor arrangement of the position of the joint and replaceability of components are improved, and the ability of resisting local buckling deformity of the steel beam flange is strengthened by reasonable designing for the joint structure.

Description

technical field [0001] The invention belongs to the field of civil engineering and relates to a self-resetting steel frame beam-side column joint of a flange friction type shape memory alloy rod. Background technique [0002] Earthquakes bring extremely serious disasters to human beings. The traditional seismic design adopts the ductility design method, that is, under the action of an earthquake, through the early yield and failure of some structural components, but the overall function is not lost, most of the seismic energy is dissipated by the plastic deformation of the components, so as to achieve the main body purpose of structural safety. [0003] As an important part of the frame structure, the beam-column connection has a great influence on the recoverable function of the structure. With the development of the concept of performance-based seismic design, the functional requirements of improving the recoverability of structures by controlling the residual deformatio...

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Problems solved by technology

[0005] Technical problem: The purpose of this invention is to improve the stable energy dissipation capacity and self-resetting performance of the joint, overcome the inconvenience of floor layout caused by the arrangement of shape memory alloy rods on the outside of the beam flange, and the shortage of local buckling deformation of the beam flange; provide an effective reinforcement joint Energy dissipation capacity and self-resetting performance, improved member replaceability of flange friction shape memory alloy rod self-resetting steel frame beam-side column joints

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