viscoplastic hinge

Abstract

The invention relates to a viscous plastic hinge comprising an energy consumption unit, a limiting unit and a connecting assembly. The energy consumption unit is a cylinder and internally provided with a rotating shaft, a partition plate, a rotating plate and viscous liquid. The limiting unit consists of a limiting pin, a limiting plate and a left connecting plate. The connecting assembly includesconnecting plates and anchor plates. The rotating shaft, the rotating plate, the left connecting plate and the left anchoring plate form the left part of the viscous plastic hinge, and a cylindricalbox body, the partition plate, the limiting plate, the right connecting plate and the right anchoring plate form the right part of the viscous plastic hinge, after the limiting pin is cut off, the left part and right part can rotate relatively to each other. During normal use and small earthquakes, the limiting unit provides rotational rigidity, and the viscous plastic hinge is a rigid node. Whenmoderate and large earthquakes occur, the limiting pin is cut off, and the plastic hinge rotates relatively. When the rotating plate with a through hole rotates with the rotating shaft, the viscous liquid is forced to generate a certain flow velocity through the through hole in a short period of time to consume energy.

Description

technical field [0001] The invention relates to a viscous plastic hinge. During normal use and small earthquakes, the limiting unit provides rotational stiffness, and the viscous plastic hinge is a rigid node; during moderate and large earthquakes, the limiting pin is cut, and the plastic hinge Relatively rotating to consume energy belongs to the field of energy dissipation and shock absorption. Background technique [0002] 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 will rotate to a certain extent, similar to the effect of hinge, resulting in the redistribution of internal forces in the structure. Under earthquake action, steel structure buildings often form plastic hinges at the beam-column joints to dissipate most of the energy input into the structure. An unstoppable target. This requires the structure to have a feasible energy dissipation mechanis...

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the defects of high cost, difficult to repair after earthquake, and affecting the bearing capacity of the structure in the plastic hinge construction method in the prior art, the purpose of the present invention is to propose a viscous plastic hinge widely applicable to truss structures and frame structures, so as to realize accurate Energy dissipation, that is, designate energy-dissipating locations and energy-dissipating components, etc.; and effectively realize the post-earthquake repairability of structures

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