Combined multi-phase vibration damping device

Abstract

The invention discloses a combined multi-phase damping device, which includes a container, a particle system, a viscous liquid, an elastic system and a screen, wherein the particle system is composed of spherical particles, bearing rods, fixed rods and built-in horizontal cylinders arranged bidirectionally, The viscous liquid is formed by mixing one or more liquids, the viscous liquid is located inside the container, and the spherical particles are located in the viscous liquid, or float or sink to the bottom of the liquid. The viscous liquid can vibrate in the container, and the spherical particle system collides with each other in the screen, and the friction energy is consumed; the viscous liquid and the particle system collide with each other, and the friction energy is consumed between the particles and the screen. The invention combines the advantages of a tuned liquid damper, a viscous damper, a tuned mass damper and a particle damper, consumes energy through the combination of liquid phase and solid phase, and has a good vibration damping effect. It has wide applicability.

Description

technical field [0001] The invention relates to the technical field of vibration reduction and wind resistance of building structure engineering, in particular to a combined multi-phase vibration reduction device. Background technique [0002] With the development of high-rise buildings in the direction of large aspect ratio and lightweight and high-strength materials, the structural stiffness and damping are gradually reduced, and they are more and more sensitive to strong stimuli such as wind and earthquakes. Structural vibration control, as an economical and effective method, has been paid more and more attention in recent years, and anti-seismic and energy dissipation and vibration reduction technologies have also been fully applied and developed in the process. [0003] From the perspective of control theory, building vibration reduction technology mainly includes four methods: active control, passive control, semi-active control and hybrid control. Among them, the most...

AI Technical Summary

Problems solved by technology

However, the damper exposed some of its own disadvantages in the application

For example, most dampers have a single working mechanism and limited vibration reduction capability; both tuned liquid dampers and tuned mass dampers have the problem of narrow effective bandwidth; viscous dampers have the problem of viscous material aging, and the material itself is expensive; metal The yield point of the damper is concentrated, and the low-cycle fatigue performance is poor; the response of the particle damper is lagging and the noise is large

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