Multi-Cavity Composite Particle Tuned Vibration Damping Device with Adjustable Natural Frequency

Abstract

The invention discloses a multi-bent-cavity composite particle tuning and vibration attenuation device with adjustable natural vibration frequency. The device includes bent cavity top plates, cavity end buffer limit plates, tuning balls with composite particles, bent cavity bottom plates, adjustable pressure air bags, air bag support frames, overall horizontal support steel plates and overall inclined supports. The device is attached to a structure and does not influence the design and application of the structure, the interior of each tuning ball with the composite particles is divided into aplurality of small spaces, and under the effect of wind or earthquakes, tuning energy dissipation and collision energy dissipation on a rail can be generated not only through the tuning balls with the composite particles but also through inner small-particle tuning balls. By adjusting the radius of the bent cavity bottom plates of the tuning and vibration attenuation device, the rolling frequencyof the tuning balls with the composite particles is closer to the natural vibration frequency of the towering structure, so that a better vibration attenuation effect is achieved. The multi-bent-cavity composite particle tuning and vibration attenuation device is simple in structure and high in applicability and energy dissipation efficiency and has broad market application prospects.

Description

technical field [0001] The invention belongs to the technical field of anti-vibration and vibration reduction of civil engineering structures, and in particular relates to a multi-bending cavity composite particle tuning vibration reduction device with adjustable natural vibration frequency. Background technique [0002] With the rapid development of the national economy, the construction of towering structures in our country is accelerating. In recent years, the environment in our country has been deteriorating and natural disasters have occurred frequently. Preventing the destructive collapse of towering structures under the action of wind or earthquake has become an unavoidable solution in engineering construction. practical problems. If only using its own stiffness to resist earthquakes, such as increasing the strength level of materials or increasing the cross-sectional size of components, it is not economical, but also has major problems. The emergence of structural v...

AI Technical Summary

Problems solved by technology

For the traditional TMD, TLD and the damping device developed based on it, its application in high-rise structures is limited, first of all, because of the limited internal space of high-rise structures, there are difficulties in installation

More importantly, only when the main frequency of the dynamic load is close to the resonance frequency, the tuned damping device can effectively function, and its operating frequency band is narrow

Secondly, most of the current vibration control equipment can only control vibration in one direction or in certain specific directions. Considering the complexity of structural vibration, such vibration devices cannot well meet the requirements of vibration control.

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