Damping hollow rod with multistage energy dissipation mechanism

Abstract

The invention provides a damping hollow rod with a multistage energy dissipation mechanism, and belongs to the technical field of structure vibration control. The damping hollow rod comprises a hollowrod body, permanent magnets, conductor pieces, rotating springs, pull-press springs, a sliding block, balls, colliding rings, a guide rod, round rubber gaskets, inner end plates, fixed rods, rubber layers and stiffening ribs. According to the damping hollow rod, the eddy-current damping technology is combined with other passive vibration attenuation technologies, and the multistage energy dissipation mechanism is achieved. When small-amplitude vibration happens to the structure, eddy current energy dissipation units and rotating spring energy dissipation units achieve energy dissipation together; when large-amplitude vibration happens to the structure, the eddy current energy dissipation units and colliding energy dissipation units achieve energy dissipation together; and the different energy dissipation units achieve cooperative energy dissipation work, the energy dissipation control effect is obviously enhanced, meanwhile, damping parameters can be conveniently adjusted, and magnetleaking of magnetic circuits is basically avoided.

Description

technical field [0001] The invention belongs to the technical field of structural vibration control, in particular to a damping hollow rod with a multi-stage energy dissipation mechanism. Background technique [0002] Large-span spatial structures are mostly used in the construction of important buildings such as stadiums, high-speed rail stations, terminal buildings, entertainment venues or industrial plants where personnel and equipment are relatively concentrated. The structure is relatively flexible, and under the action of earthquake, wind load or other environmental excitations, the vibration response of the structure is relatively strong, which cannot meet the requirements of normal use or even damage. In recent years, the development of large-span spatial structures in China is very rapid, and the research on vibration control of them has very important practical significance. [0003] Structural vibration control is to reduce the dynamic response of the structure b...

AI Technical Summary

Problems solved by technology

[0002] Large-span spatial structures are mostly used in the construction of important buildings such as stadiums, high-speed rail stations, terminal buildings, entertainment venues or industrial plants where personnel and equipment are relatively concentrated. The structure is relatively soft, and under the action of earthquake, wind load or other environmental excitations, the vibration response of the structure is relatively strong, which cannot meet the normal use requirements or even cause damage

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