Wind and Structures

  • 제21권1호
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  • Pages.1-23
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  • 2015
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Wind pressure characteristics of a low-rise building with various openings on a roof corner

  • Wang, Yunjie (College of Civil Engineering, Hunan University) ;
  • Li, Q.S. (Department of Architecture and Civil Engineering, City University of Hong Kong)
  • 투고 : 2014.09.27
  • 심사 : 2015.02.19
  • 발행 : 2015.07.25
⟨ 이전 논문 다음 논문 ⟩

초록

Wind tunnel testing of a low-rise building with openings (holes) of different sizes and shapes on a roof corner is conducted to measure the internal and external pressures from the building model. Detailed analysis of the testing data is carried out to investigate the characteristics of the internal and external pressures of the building with different openings' configurations. Superimposition of the internal and external pressures makes the emergence of positive net pressures on the roof. The internal pressures demonstrate an overall uniform distribution. The probability density function (PDF) of the internal pressures is close to the Gaussian distribution. Compared with the PDF of the external pressures, the non-Gaussian characteristics of the net pressures weakened. The internal pressures exhibit strong correlation in frequency domain. There appear two humps in the spectra of the internal pressures, which correspond to the Helmholtz frequency and vortex shedding frequency, respectively. But, the peak for the vortex shedding frequency is offset for the net pressures. Furthermore, the internal pressure characteristics indirectly reflect that the length of the front edge enhances the development of the conical vortices.The objective of this study aims to further understanding of the characteristics of internal, external and net pressures for low-rise buildings in an effort to reduce wind damages to residential buildings.

키워드

과제정보

연구 과제 주관 기관 : Hunan University, National Natural Science Foundation of China, City University of Hong Kong

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피인용 문헌

  1. A review of wood-frame low-rise building performance study under hurricane winds vol.141, 2017, https://doi.org/10.1016/j.engstruct.2017.03.036
  2. Fragility Assessment of Roof-to-Wall Connection Failures for Wood-Frame Houses in High Winds vol.3, pp.4, 2017, https://doi.org/10.1061/AJRUA6.0000916
  3. Wind pressures on different roof shapes of a finite height circular cylinder vol.24, pp.1, 2015, https://doi.org/10.12989/was.2017.24.1.025
  4. An engineering-based assessment methodology on the loss of residential buildings under wind hazard vol.30, pp.1, 2015, https://doi.org/10.12989/was.2020.30.1.001
  5. Natural wind impact analysis of transiting test method to measure wind pressure coefficients vol.30, pp.2, 2020, https://doi.org/10.12989/was.2020.30.2.199
  6. Steady-state and transient wind characteristics of low-rise building roofs with openings in vulnerable areas vol.23, pp.11, 2015, https://doi.org/10.1177/1369433220911116
  7. Experimental and theoretical study on the internal pressure induced by the transient local failure of low-rise building roofs vol.24, pp.14, 2015, https://doi.org/10.1177/13694332211022069