Volume 34 Issue 12
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YU Xian-feng, XIE Zhuang-ning, LIU Mu-guang, LIU Hai-ming. INTERFERENCE EFFECTS ON ALONG-WIND ACCELERATION BETWEEN TWO HIGH-RISE BUILDINGS[J]. Engineering Mechanics, 2017, 34(12): 143-149,170. DOI: 10.6052/j.issn.1000-4750.2016.08.0638
Citation: YU Xian-feng, XIE Zhuang-ning, LIU Mu-guang, LIU Hai-ming. INTERFERENCE EFFECTS ON ALONG-WIND ACCELERATION BETWEEN TWO HIGH-RISE BUILDINGS[J]. Engineering Mechanics, 2017, 34(12): 143-149,170. DOI: 10.6052/j.issn.1000-4750.2016.08.0638
shu

INTERFERENCE EFFECTS ON ALONG-WIND ACCELERATION BETWEEN TWO HIGH-RISE BUILDINGS

  • 1.

    State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou, Guangdong 510640, China;

  • 2.

    State Key Laboratory of Bridge Engineering Structural Dynamics, China Merchants Chongqing Communication Research & Design Institute Co., Ltd., Chongqing 400067, China

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  • Received Date: August 22, 2016
  • Revised Date: November 06, 2016
    Graphical Abstract
    • Abstract
  • External pressures on the surfaces of principal building were obtained by a series of wind tunnel tests on rigid models. Acceleration responses of the principal building were calculated at different reduced velocities. Envelope interference factor (EIF) distribution and vortex-induced vibration mechanism of the along-wind peak acceleration were detailed studied in different breadth ratios Br (Br=Bi/zBp) and height ratios Hr (Hr=Hi/Hp). Furthermore, correlation analyses were carried out for the envelope interference factors EIF in different breadth ratios Br and height ratios Hr. Results show that the maximum values of EIF are 2.3 and 2.06 when Br equals 0.4 and 0.6 respectively, because of the influence of vortex-induced vibration. In wind resistant design process, the amplification effect of along-wind acceleration should be paid more attention when Br is small. In non-resonance cases, the remarkable amplification region becomes larger with the increase of Br, and the corresponding maximum values of EIF also gradually increase. Correlation coefficient of EIF between Hr=1.2 and 1.0 is up to 91%, and the distribution of. EIF nearly keeps unchanged when Hr ≥ 1.2.
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    • References (19)
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