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作者:

He, Hao-Xiang (He, Hao-Xiang.) (学者:何浩祥) | Ge, Teng-Fei (Ge, Teng-Fei.) | Cong, Mao-Lin (Cong, Mao-Lin.)

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摘要:

The installation and application of traditional vibration reduction dampers are inconvenient for high-rise structures due to their special shapes and limited interior spaces. The rotor of a gimbal gyroscope has two rotating degrees of freedom, and the gyroscope produceds moments to resist two orthogonal displacements when its rotor rotates with high speed. Hence, the structural deformation of a high-rise building installed with a gimbal grroscope under external loads can be reduced. Here, a method for installing some gimbal gyroscopes on a high-rise structure to reduce its structural horizontal and torsional vibrations was presented. The movement mechanism of a gimbal gyroscope damper was formulated, and the dynamic equation for a multi-dimensional control system with gyroscope dampers was established. A steel TV tower with gyroscope dampers was analyzed to study its vibration control performance under fluctuating wind loadings and earthquake action. The results showed that the dynamic responses of a high-rise structure can be reduced effectively using ginbal gyroscope dampers with appropriate parameters.

关键词:

Degrees of freedom (mechanics) Earthquakes Gyroscopes Structural dynamics Tall buildings Vibration analysis Vibration control

作者机构:

  • [ 1 ] [He, Hao-Xiang]Beijing Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing 100124, China
  • [ 2 ] [Ge, Teng-Fei]Beijing Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing 100124, China
  • [ 3 ] [Cong, Mao-Lin]Beijing Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing 100124, China

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来源 :

Journal of Vibration and Shock

ISSN: 1000-3835

年份: 2012

期: 24

卷: 31

页码: 26-29,59

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