Self-damage energy-consuming repairable plastic hinge

Abstract

Provided is a self-damage energy-consuming repairable plastic hinge. The self-damage energy-consuming repairable plastic hinge comprises a fixing unit, a rotating unit and a connecting energy dissipation unit. A right beam end of a profile steel beam of the fixing unit is welded with a column of a structure, and double connecting plates are welded with the two sides of a left beam end of the profile steel beam respectively; a right beam end of a profile steel beam of the rotating unit is welded with a rabbet of a single connecting plate; a single connecting plate and double connecting plates of the connecting energy dissipation unit are in bolt connection through bolt holes, and the two ends of each fixing energy dissipation steel sheet are connected with the profile steel beam and upper and lower flanges of the profile steel beam respectively through bolts. The single connecting plate is located between the double connecting plates and is in loading connection with the double connecting plates through bolts. The fixing energy dissipation steel sheets are connected to upper and lower flange plates of the profile steel beam respectively through high-strength bolts, and the shape ofeach fixing energy dissipation steel sheet is 'dog-bone'-shaped to ensure that the process of the elastic plastic deformation to damage occurs in the middle part. The self-damage energy-consuming repairable plastic hinge only needs to replace the fixing energy dissipation steel sheets and resets after an earthquake, and the self-damage energy-consuming and post-earthquake rapid repair of partial components can be achieved.

Description

technical field [0001] The invention relates to a plastic hinge in a steel structure beam, in particular to a self-consumption energy-repairable novel "plastic hinge" structure, which belongs to the field of anti-seismic technology of steel structure beam-column joints in civil engineering. Background technique [0002] In recent years, the idea of ​​seismic design based on non-destructive structures has begun to be proposed by scholars, which has brought a new research idea to the study of structural engineering. In the anti-seismic design based on non-destructive structure, the anti-seismic requirements of the building are envisaged by replacing the plastic hinge with special energy-dissipating devices, and different methods and means can be used to achieve these anti-seismic requirements, which can make new materials and new structural systems , new design methods, etc. are more likely to be widely used. [0003] Plastic hinge means that under the action of load, when th...

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Problems solved by technology

[0005] Although the domestic construction methods of plastic hinges in steel structures can effectively realize the outward movement of plastic hinges and achieve the purpose of protecting beam-column joints, there are still the following defects: (1) Plastic hinges are very likely to be completely destroyed, and the energy consumption of the structure is equivalent to that of earthquakes. (2) It is difficult to achieve precise control of structural energy consumption, and can only roughly control the location of plastic hinges; (3) The formation mechanism of plastic hinges largely depends on the properties of steel and the structural details of joints , and some construction methods are more difficult to implement

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