Multidimensional vibration damper for suspension bridge central buckle containing viscoelasticity energy consumption component and metal rubber

Abstract

The invention discloses a multidimensional vibration damper for a suspension bridge central buckle containing a viscoelasticity energy consumption component and metal rubber. Under the action of weak wind load or mid-small vibration, a propeller type energy consumption device moves in a cylindrical steel box under the driving of a main cable, and generates friction with a viscoelastic material in the steel box so as to reduce the influence of action on the main body structure of a suspension bridge; when the multidimensional vibration damper is under the action of strong wind load or great vibration, relatively great displacement is possible to appear in the horizontal direction, a limiting baffle is contacted with an annular rubber tie-plate on a wall of the cylindrical steel box to drive the steel box to rotate around a cuboid steel box supporting seat, at the moment, a part of the acting energy is adsorbed by the viscoelastic material between the supporting seat and angle iron, and the metal rubber, except for consuming a part of energy, can also prevent the whole central buckle structure from generating overlarge horizontal displacement, and enables the structure to restore after the load is removed. By the multidimensional vibration damper disclosed by the invention, the whole central buckle has relatively good plasticity, and damages to the main body structure of the suspension bridge are reduced.

Description

technical field

[0001] The invention relates to a multi-dimensional damping device for a central buckle of a suspension bridge containing viscoelastic energy-dissipating components and metal rubber, and belongs to the technical fields of wind resistance, earthquake resistance and shock absorption in civil engineering. Background technique

[0002] Modern suspension bridges are a flexible cable-girder combination system composed of main cables and stiffening beams. Under various loads or dynamics such as vehicles, earthquakes, and wind loads, the main cables and stiffening beams will undergo large deformations and even twists in the vertical and horizontal directions. , if the displacement of the cable girder is not synchronized, it will cause bending damage to the sling, especially the short sling at the mid-span. An important way to fundamentally improve this problem is to set a central buckle in the middle of the main span so that the two Relatively fixed at mid-span. In ...

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