Combined type multi-dimensional vibration reduction device with damping amplification function

Abstract

The invention discloses a combined type multi-dimensional vibration reduction device with a damping amplification function. The combined type multi-dimensional vibration reduction device comprises an outer barrel, wherein a horizontal vibration reduction and energy dissipation system and a vertical vibration reduction and energy dissipation system are arranged in the barrel; the horizontal vibration reduction and energy dissipation system comprises a central mass body, a piston type damper and a vibration absorption layer; and the vertical vibration reduction and energy dissipation system comprises a central mass body, an electromagnetic rotating energy dissipation mechanism and a friction resistance layer. Multi-dimensional vibration reduction control of the structure is achieved, and the vibration reduction and energy dissipation effects of the vibration reduction device are enhanced; damping adjustability and energy dissipation capacity adjustability in the vibration process are achieved by introducing the piston type damper full of magnetorheological fluid and an electromagnetic rotary energy dissipation device; and part of vibration energy is converted into electric energy through piezoelectric ceramics, the electric energy is directly supplied to an electrified coil, the damping force and the energy dissipation capacity of the vibration reduction device are adjusted in real time through structural vibration in an energy conversion mode, and full-automatic adjustment and energy self-sufficiency of the vibration reduction device are achieved.

Description

technical field [0001] The invention belongs to the field of vibration control of civil engineering, and in particular relates to a composite multi-dimensional damping device with damping amplification function, which is mainly used to control the vibration response of long-span structures and towering structures, and reduce the damage of vibration to buildings or structures. [0002] technical background [0003] Due to their structural characteristics, long-span structures and high-rise structures usually have high flexibility, and their natural vibration frequencies are often close to those of earthquakes, strong winds, and common live loads, so they often have impacts during service. Vibration for structural safety and comfort. Long-span structures and high-rise structures are favored for their unique artistry, excellent visual effects and good economic value, and their number and building scale are also increasing. How to control the vibration response of long-span stru...

AI Technical Summary

Problems solved by technology

Most of the mainstream damping and shock absorbing devices are passive shock absorbers with relatively simple structure and good reliability and durability. Insufficient vibration reduction and energy dissipation capabilities; active vibration reduction devices developed on the basis of passive vibration reduction usually require external energy input and additional structural dynamic monitoring systems, with complex structures and high costs

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