Low-frequency swing-type tuned mass damper

Abstract

The invention belongs to the technical field of damping for civil engineering structure, and particularly relates to a tuned mass damper used for controlling the low-frequency vibration of a building structure. The tuned mass damper comprises suspension components, a damping device and a mass block and is characterized by further comprising at least one swing support, when more than one swing support is arranged, the swing supports are nested from outside to inside, the lower part of each swing support is connected with the adjacent suspension component at the outer side of the swing support, and the upper part of the swing support is connected with the adjacent suspension component at the inner side of the swing support; the lower end of the adjacent suspension component at the inner side of the swing support is further connected with the adjacent swing support at the inner side of the suspension component or with the mass block; and the damping device is connected with the mass block. The tuned mass damper is compact in spatial structure, suitable for control on the vibrations of structures with frequencies of 0.15 Hz and even lower, great in cost performance, capable of effectively expanding the application range of swing-type tuned mass damper products, and very wide in market application prospect.

Description

technical field [0001] The invention belongs to the technical field of vibration reduction of civil engineering structures, and in particular relates to a tuned mass vibration damper for controlling low-frequency vibration of building structures. Background technique [0002] With the development of urban construction, various high-rise, super-high-rise buildings, slender structures, and long-span buildings are increasing. The prevention and control of destructive resonance in such large-span, low-frequency structures has become a reality that has to be solved in engineering construction. Problem, practice has proved that the tuned mass damper (also called mass tuned damper, tuned mass damper or mass tuned damper in the literature, also referred to as TMD in this paper) is an effective vibration control device. The natural frequency is adjusted to be close to the natural frequency of the structure, and then installed on the structure. When the structure is disturbed by the ...

AI Technical Summary

Problems solved by technology

[0008] It can be seen from the above table that the existing pendulum-type tuned mass damper is not suitable for controlling low-frequency vibration with a natural frequency lower than 0.15 Hz, mainly because the required pendulum length is too large, which requires too much installation space and poor applicability , in actual engineering, it is basically impossible to meet such a large space requirement

[0009] In summary, it can be seen that, on the one hand, the existing pendulum tuned mass damper is difficult to apply to low-frequency vibration below 0.15 Hz; on the other hand, there are more and more skyscrapers hundreds of meters high, and the wind of these skyscrapers The vibration frequency is often as low as 0.1Hz, and the market urgently needs to provide a tuned mass damper product suitable for low-frequency structural vibration control

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