Self-adaptive friction energy consuming and vibration reducing device for bridge beam structure

Abstract

The invention discloses a self-adaptive friction energy consuming and vibration reducing device for a bridge beam structure. The self-adaptive friction energy consuming and vibration reducing device comprises a base, a displacement conversion rack, a displacement amplifying assembly and a friction energy consuming assembly. The displacement conversion rack is fixedly installed on the end portion of a bridge beam. The displacement conversion rack moves horizontally along with horizontal vibration of the bridge beam. The displacement amplifying assembly and the friction energy consuming assemblyare fixedly installed on the base. One end of the displacement amplifying assembly is in transmission connection with the displacement conversion rack, and thus the horizontal vibration of the bridgebeam is converted into rotating motion of the displacement amplifying assembly. The other end of the displacement amplifying assembly is in transmission connection with the friction energy consumingassembly, and thus while displacement of the horizontal vibration of the bridge beam is amplified indirectly, the rotating motion of the displacement amplifying assembly is conveyed to the friction energy consuming assembly. By means of friction energy consuming, braking of the rotating motion of the friction energy consuming assembly can be achieved, effective braking is obtained under heat energy consumption and dissipation generated by friction, and energy consuming and vibration reducing of the bridge beam are good.

Description

technical field [0001] The invention relates to the technical field of structural vibration control, in particular to a bridge structure self-adaptive frictional energy dissipation vibration damping device. Background technique [0002] Bridge structure vibration is an important factor causing bridge damage. Due to the large span of the bridge structure and the requirements of its use function, it is often affected by vibration caused by earthquakes, vibrations caused by loads, and even vibrations caused by vehicle-bridge coupling. [0003] However, most of the existing countermeasures are: to improve the vibration response of the bridge by enhancing the structural strength design, but this kind of cost is high and the economy is poor; to actively control the vibration of the bridge structure through energy consumption and vibration reduction, specifically, its Under the action of the damper, the energy input into the bridge is dissipated, so as to achieve the purpose of sup...

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Problems solved by technology

[0005] In view of this, the present invention provides a bridge structure self-adaptive frictional energy dissipation vibration damping device to solve the problem mentioned above that when the vibration displacement of the bridge structure is not large, the vibration energy consumption of the bridge cannot be adjusted and the vibration damping effect is not good. The problem

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