The multi-stage spring particle damper

Abstract

The invention relates to a multi-stage spring particle damper, which comprises a damper outer cavity body, a damper inner cavity body, inner cavity body spring devices, outer cavity body spring devices, particle clusters, directional wheels, chutes, a buffer material and a fixing structure, wherein the damper outer cavity body and the damper inner cavity body are both in a cuboid structure; the damper inner cavity body can be equipped with multiple partitions in the horizontal direction or / and the vertical direction, a layer of metal or non-metal particle cluster is spread in the cavity body of each partition, the buffer material is stuck inside the inner cavity body to help the particles collide to consume energy, and the frequency of the inner cavity body spring devices and the outer cavity body spring devices can be matched reasonably according to the structure characteristics. Under the action of wind or / and the earthquakes and the like, the input energy is finally transferred to the damper inner cavity body through the two-stage springs of the inner cavity body and the outer cavity body, so that collision and friction between the particles inside the inner cavity body and the collision and friction between the particles and the inner wall of the inner cavity body are sufficiently triggered, and a better vibration reduction effect is realized; by means of the reasonable collocation of the frequency of the two-stage springs, the vibration reduction frequency band is greatly broadened.

Description

technical field [0001] The invention relates to a multi-stage spring particle damper, which stores energy through springs and transfers the energy, and finally consumes energy through multiple collisions between particles and particles in the inner cavity, and between particles and the inner wall. It belongs to the field of vibration control of civil structures and can be used for High-rise buildings, high-rise structures and bridge structures, etc. Background technique [0002] In recent years, due to the rapid development of high-rise buildings, issues such as seismic 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 limitation...

AI Technical Summary

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 control vibration mode, the present invention provides a multi-stage spring particle damper, which is based on the impact damper structure with multi-cell particle vibration reduction A two-stage spring device is set to achieve higher vibration reduction efficiency to meet the actual needs of civil engineering

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