Wind and Structures

Techno-Press (테크노프레스)
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Wind tunnel tests of an irregular building and numerical analysis for vibration control by TLD

  • Jianchen Zhao (School of Civil Engineering, Henan University of Technology) ;
  • Jiayun Xu (Hubei Key Laboratory of Road Bridge & Structure Engineering, Wuhan University of Technology) ;
  • Hang Jing (School of Civil Engineering, Henan University of Technology)
  • Received : 2021.05.18
  • Accepted : 2023.05.06
  • Published : 2023.07.25
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Abstract

Due to the irregular shape and the deviation of stiffness center and gravity center, buildings always suffer from complex surface load and vibration response under wind action. This study is dedicated to analyze the surface wind load and wind-induced response of an irregular building, and to discuss the possibility of top swimming pool as a TLD to diminish wind-induced vibration of the structure. Wind tunnel test was carried out on a hotel with irregular shape to analyze the wind load and structural response under 8 wind incident angles. Then a precise numerical model was established and calibrated through experimental results. The top swimming pool was designed according to the principle of frequency modulation, and equations of motion of the control system were derived theoretically. Finally, the wind induced response of the structure controlled by the pool was calculated numerically. The results show that both of wind loads and wind-induced responses of the structure are significantly different with wind incident angle varies, and the across-wind response is nonnegligible. The top swimming pool has acceptable damping effect, and can be designed as TLD to mitigate wind response.

Keywords

Acknowledgement

The research described in this paper was financially supported by the National Natural Science Foundation of China (No. 51578434). The authors are grateful to the anonymous reviewers for providing constructive remarks that improved quality of the final manuscript.

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