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Effects of Surface-Attached Vertical Ribs on Wind Loads and Wind-Induced Responses of High-Rise Buildings

Author

Listed:
  • Yanyu Ke

    (College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
    Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong 999077, China)

  • Guohui Shen

    (College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China)

  • Xiaoyue Yang

    (College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
    East China Architectural Design and Research Institute, Shanghai 200002, China)

  • Jiming Xie

    (College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China)

Abstract

Façade design tends to be diverse with increasing requirements for architectural functions in modern high-rise buildings, leading to various aerodynamic roughness conditions of the building surface. A typical practice is setting vertical ribs on the building façade. This study aims to clarify the effects of vertical ribs on the wind loads and wind-induced responses of high-rise buildings. The models with four vertical rib configurations were tested in the open and suburban exposures using the High-Frequency Force Balance (HFFB) technique in a wind tunnel. The base overturning moments and corresponding responses are demonstrated and compared between models and exposures. Results show that the vertical ribs with a relative width of 4% can not only reduce the mean force coefficients in the along-wind direction but also attenuate the cross-wind vibration by disrupting the regular vortex shedding. Moreover, the half-distributed and full-distributed rib configurations have almost indistinguishable benefit, indicating that the ribs in the corner region of the building façade play a dominant role in reducing the wind-induced responses. Although the cross-wind responses of the building would be less severe in the suburban exposure than those in the open exposure, the reduction rate of the wind-induced responses by the vertical ribs remains almost unchanged.

Suggested Citation

  • Yanyu Ke & Guohui Shen & Xiaoyue Yang & Jiming Xie, 2022. "Effects of Surface-Attached Vertical Ribs on Wind Loads and Wind-Induced Responses of High-Rise Buildings," Sustainability, MDPI, vol. 14(18), pages 1-17, September.
  • Handle: RePEc:gam:jsusta:v:14:y:2022:i:18:p:11394-:d:912107
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    Cited by:

    1. Yuchao Xia & Yan Shen & Jiahui Yuan & Shuifu Chen, 2023. "Numerical and Experimental Study on Flow Field around Slab-Type High-Rise Residential Buildings," Sustainability, MDPI, vol. 15(17), pages 1-20, August.

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