Adaptive Friction Energy Dissipation and Vibration Reduction Device for Bridge Structures

Abstract

The invention discloses a self-adaptive frictional energy dissipation and vibration reduction device for a bridge structure, which comprises a base, a displacement conversion rack, a displacement amplification component and a frictional energy consumption component. The displacement conversion rack is fixedly installed at the end of the bridge deck beam, and The conversion rack moves in translation with the horizontal vibration of the bridge. Both the displacement amplifying component and the friction energy dissipation component are fixedly installed on the base. One end of the displacement amplifying component is connected with the displacement conversion rack to convert the horizontal vibration of the bridge into the displacement amplifying component. Rotational movement, the other end of the displacement amplifying component is connected to the frictional energy dissipation component to indirectly amplify the displacement of the horizontal vibration of the bridge, and at the same time transmit the rotational movement of the displacement amplifying component to the frictional energy consuming component, and the frictional energy consuming component passes the friction Dissipate energy to realize the braking of the rotational motion of the friction energy-dissipating components, and obtain effective braking under the dissipation of heat energy generated by friction, so that the energy dissipation and vibration reduction of the bridge is 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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