Nonlinear rail type collaborative tuning damper

Abstract

The invention relates to a nonlinear rail type collaborative tuning damper which comprises an external cavity unit, a spring system, a viscous liquid, an internal cavity unit, a cushioning material and a particle group. Two groove rails which are arranged in the length direction of the cavity are arranged at the bottom of the damper external cavity unit, the internal cavity unit can slide back and forth along the groove rails and is connected with the inner wall of the external cavity through the spring system, the portion between the external cavity unit and the internal cavity unit is filled with the viscous liquid, the inner wall and bottom of the internal cavity are covered with the cushioning material, and the particle group is composed of circular particles with different sizes. Shaking of the viscous liquid enables the internal cavity to move back and forth to consume energy, and friction and collision of the liquid and the container wall provides the damping effect; the structure self-vibration frequency is tuned by the spring system, and the energy is consumed by means of the collision and friction between the particles or between the particles and the cavity wall. According to the nonlinear rail type collaborative tuning damper, the advantages of various dampers are combined, the vibration damping frequency band is wide, the effect is good, and the nonlinear rail type collaborative tuning damper has wide applicability in the field of civil engineering structure vibration control.

Description

technical field [0001] The invention relates to a novel structural energy consumption and vibration reduction device, which is mainly used in the vibration control of civil structures (especially high-rise buildings, etc.) under the action of earthquake and wind. Background technique [0002] In recent years, due to the rapid development of high-rise buildings, the problems of earthquake vibration and wind-induced vibration have received extensive attention and research. Passive control technologies such as energy dissipation and shock absorption are widely used to reduce the vibration response of high-rise buildings under the action of earthquake and wind. Among them, the tuned mass damper (TMD) is the most widely used due to its simple structure and low cost. It also has certain limitations. First, the vibration reduction frequency band is narrow, generally only effective in a small frequency range, and is sensitive to changes in the working environment; second, the contro...

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Problems solved by technology

[0003] In order to overcome the deficiencies of the existing tuned mass damper, such as narrow damping frequency band and single mode of control mode, the present invention provides a nonlinear track-type coordinated tuned damper, which introduces a tuned liquid damper on the basis of the traditional tuned mass damper, Viscous liquid dampers and particle dampers currently mainly used in the fields of aerospace and machinery manufacturing are organically combined to give full play to the advantages of various dampers, so as to achieve a wide range of applications, small additional mass, and low vibration frequency. Wide bandwidth, obvious vibration reduction effect and other requirements, to meet the actual needs of civil engineering

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