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Mitigation of micro vibration by viscous dampers 被引量:1

Mitigation of micro vibration by viscous dampers
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摘要 This study proposes a micro vibration mitigation system using viscous dampers to solve the problem of vibration in a high-tech building. Due to the operating frequency of the air conditioners and fundamental mode of the floors, a resonant phenomenon is occasionally experienced at the upper levels of the structure. Several strategies were considered, and viscous dampers combined with a suspension system were chosen to mitigate this annoying situation. A theoretical analysis was first executed to determine the optimal design value of the damper and the suspension spring. An efficient reduction in floor velocity of approximately 50 % was achieved by the proposed system. Practical verifications including a performance test of the micro-vibration-oriented dampers, the pragmatic application result, and a comparison in one-third octave spectrum was then carried out. The performance of the system was demonstrated by the data measured. It alleviated more trembling than was numerically expected. The energy absorbed by the viscous dampers is illustrated by the hysteresis loops and the one-third octave spectrum. It is found that with the proposed system, the vibration can be effectively captured by the viscous damper and converted to lower frequency-content tremors. The success of this project greatly supports the proposed standard two-stage analysis procedure for mitigating micro-vibration problems in practice. This research extends the use of viscous dampers to a new field. This study proposes a micro vibration mitigation system using viscous dampers to solve the problem of vibration in a high-tech building. Due to the operating frequency of the air conditioners and fundamental mode of the floors, a resonant phenomenon is occasionally experienced at the upper levels of the structure. Several strategies were considered, and viscous dampers combined with a suspension system were chosen to mitigate this annoying situation. A theoretical analysis was first executed to determine the optimal design value of the damper and the suspension spring. An efficient reduction in floor velocity of approximately 50 % was achieved by the proposed system. Practical verifications including a performance test of the micro-vibration-oriented dampers, the pragmatic application result, and a comparison in one-third octave spectrum was then carried out. The performance of the system was demonstrated by the data measured. It alleviated more trembling than was numerically expected. The energy absorbed by the viscous dampers is illustrated by the hysteresis loops and the one-third octave spectrum. It is found that with the proposed system, the vibration can be effectively captured by the viscous damper and converted to lower frequency-content tremors. The success of this project greatly supports the proposed standard two-stage analysis procedure for mitigating micro-vibration problems in practice. This research extends the use of viscous dampers to a new field.
出处 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2009年第4期569-582,共14页 地震工程与工程振动(英文刊)
关键词 viscous damper: micro vibration: structural control viscous damper: micro vibration: structural control
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参考文献10

  • 1Carden Lyle P,Davidson Barry J,Larkin Tam J,BuckleIG."Retrofi t of Seismically Isolated Structuresfor Near-fi eld Ground Motion Using AdditionalViscous Damping,"[].Bulletin of the New ZealandSociety for Earthquake Engineering.2005
  • 2Chrysostomou CZ,Demetriou Themos,Pittas Michael,Stassis Andreas."Retrofi t of a Church with Linear Viscous Dampers Structural Control and Health Monitoring,"[]..2005
  • 3Hwang Jenn-Shin,Huang Yin-Nan,Yi Shy-Lian,Ho Song-Yen."Design Formulations for Supplemental Viscous Dampers to Building Structures,"[].Journal of Structural Engineering.2008
  • 4International Standards Organization."Guide to the Evaluation of Human Exposure to Vibration and Shock in Buildings (1Hz to 80 Hz),"[].Draft Proposal ISO /DAD.1981
  • 5Kurihara M,Shigita M,Niino T,Matsuki T."Development of a 3-dimensional Seismic Isolation Floor for Computer Systems,"[].JSME International JournalSeries : VibrationControl EngineeringEngineering for Industry.1992
  • 6Lavan Oren,Levy Robert."Optimal Peripheral Drift Control of 3D Irregular Framed Structures Using Supplemental Viscous Dampers,"[].Journal of Rare Earths.2006
  • 7Main Joseph A,Krenk Steen."Effi ciency and Tuning of Viscous Dampers on Discrete systems,"[].Journal of Sound and Vibration.2005
  • 8Asfar K R,Akour S N.Optimization analysis ofimpact viscous damper for controlling self-excitedvibrations[].Journal of Vibration and Control.2005
  • 9Chang KC,Lin YY,Chen CY."Shaking Table Study on Displacement-based Design for Seismic Retrofi t of Existing Buildings Using Nonlinear Viscous Dampers,"[].Journal of Structural Engineering ASCE.2008
  • 10El-Borgi S,Smaoui H,Casciati F,et al.Seismic evaluation and innovative retrofit of a historical building in Tunisia[].Structural Control and Health Monitoring.2005

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