A Friction-Plastic Hinge That Makes Structures Nondestructive

Abstract

The invention provides a friction plastic hinge capable of making a structure be nondestructive, and belongs to the technical field of earthquake proofing of steel structure joints in civil engineering. A basic unit is composed of a round-tube-shaped sealing plate, limiting strips and a profile steel beam; the profile steel beam and the round-tube-shaped sealing plate are welded, the limiting strips and the round-tube-shaped sealing plate are welded, and the limiting strips are evenly distributed on the tube inner wall side; a groove opening is formed in the position, corresponding to a rotating single connecting plate, of the round-tube-shaped sealing plate; a rotating unit is composed of a profile steel beam, a circular-arc-shaped sealing plate, a rubber friction material and the rotating single connecting plate; the rubber friction material and the inner wall of the circular-arc-shaped sealing plate are pasted; a connecting energy-dissipation unit is composed of loading rotating bolt limiting bolts and double friction-plate connecting plates (double friction plates and double connecting plates); the double friction plates are tightly attached to the inner sides of the double connecting plates correspondingly, so that the rotating single connecting plate is embedded in the round-tube-shaped sealing plate through the groove opening formed in the round-tube-shaped sealing plate; the double friction-plate connecting plates return to the position, tightly attached to the two sides of the rotating single connecting plate, from the two sides along the limiting strips; and the three parts of the basic unit, the rotating unit and the connecting energy-dissipation unit are connected through the loading rotating bolt limiting bolts, limiting bolts and bolt holes corresponding to the connecting plate.

Description

technical field [0001] The invention relates to a plastic hinge in a steel structure beam and belongs to the technical field of anti-seismic technology of steel structure nodes 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 easier to apply. [0003] Plastic hinge means that under the action of load, when the bending moment at several sections in the structure reaches the plastic limit bending moment, the section...

AI Technical Summary

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

Images