Wind and Structures

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Numerical and experimental investigation of control performance of active mass damper system to high-rise building in use

  • Park, S.J. (R&D Technique Institute, Lotte Engineering and Construction Co. Ltd.) ;
  • Lee, J. (R&D Technique Institute, Lotte Engineering and Construction Co. Ltd.) ;
  • Jung, H.J. (Department of Civil and Environmental Engineering, KAIST) ;
  • Jang, D.D. (Department of Civil and Environmental Engineering, KAIST) ;
  • Kim, S.D. (Department of Civil, Environmental and Architectural Engineering, Korea Univ.)
  • Received : 2008.10.16
  • Accepted : 2009.04.10
  • Published : 2009.07.25
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Abstract

This paper numerically and experimentally investigates the control performance of the active mass damper (AMD) systems in a 26-story high-rise building in use. This is the first full-scale application of the AMD system for suppressing the wind-induced vibration of a building structure in Korea. In addition, the AMD system was installed on top of the building already in use, which may be the world's first implementation case. In order to simultaneously mitigate the transverse-torsional coupled vibration of the building, two AMD systems were applied. Moreover, the H-infinity control algorithm has been developed to utilize the maximum capacity of the AMD system. From the results of numerical simulation using the wind load obtained from the wind tunnel tests, it was found that the maximum acceleration responses of the building were reduced significantly. Moreover, the control performance of the installed AMD system was examined by carrying out the free and forced vibration tests. The acceleration responses on top of the building in the controlled case measured under strong wind loads were compared with those in the uncontrolled case numerically simulated by using the wind load deduced from the measured data and a structural model of the building. It is demonstrated that the AMD system shows good control performance in reducing the building accelerations.

Keywords

References

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