Wind and Structures

  • 제5권6호
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  • Pages.543-562
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  • 2002
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

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Wind-induced dynamic response and its load estimation for structural frames of single-layer latticed domes with long spans

  • 투고 : 2002.01.16
  • 심사 : 2002.03.22
  • 발행 : 2002.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

The main purpose of this study is to discuss the design wind loads for the structural frames of single-layer latticed domes with long spans. First, wind pressures are measured simultaneously at many points on dome models in a wind tunnel. Then, the dynamic response of several models is analyzed in the time domain, using the pressure data obtained from the wind tunnel experiment. The nodal displacements and the resultant member stresses are computed at each time step. The results indicate that the dome's dynamic response is generally dominated by such vibration modes that contribute to the static response significantly. Furthermore, the dynamic response is found to be almost quasi-static. Then, a series of quasi-static analyses, in which the inertia and damping terms are neglected, is made for a wide range of the dome's geometry. Based on the results, a discussion is made of the design wind load. It is found that a gust effect factor approach can be used for the load estimation. Finally, an empirical formula for the gust effect factor and a simple model of the pressure coefficient distribution are provided.

키워드

참고문헌

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피인용 문헌

  1. Wind load evaluation system for the design of roof cladding of spherical domes vol.96, pp.10-11, 2008, https://doi.org/10.1016/j.jweia.2008.02.051
  2. Nonlinear dynamic analysis for large-span single-layer reticulated shells subjected to wind loading vol.8, pp.1, 2005, https://doi.org/10.12989/was.2005.8.1.035
  3. AN APPROXIMATION METHOD FOR COMPUTING THE DYNAMIC RESPONSES AND EQUIVALENT STATIC WIND LOADS OF LARGE-SPAN ROOF STRUCTURES vol.10, pp.05, 2010, https://doi.org/10.1142/S0219455410003944
  4. Grouping response method for equivalent static wind loads based on a modified LRC method vol.11, pp.1, 2012, https://doi.org/10.1007/s11803-012-0102-8
  5. Wind-Induced vibration responses of prestressed double-layered spherical latticed shells vol.11, pp.2, 2011, https://doi.org/10.1007/s13296-011-2007-1
  6. Wind-induced effect of a spatial latticed dome structure using stabilized finite element method vol.21, pp.1, 2016, https://doi.org/10.1007/s12204-016-1693-4
  7. Constrained Least-Squares Method for Computing Equivalent Static Wind Loads of Large-Span Roofs vol.17, pp.10, 2014, https://doi.org/10.1260/1369-4332.17.10.1497
  8. Model of wind pressure field on circular flat roofs and its application to load estimation vol.96, pp.6-7, 2008, https://doi.org/10.1016/j.jweia.2007.06.025
  9. Universal Equivalent Static Wind Loads of Fluctuating Wind Loads on Large-Span Roofs Based on POD Compensation vol.18, pp.9, 2015, https://doi.org/10.1260/1369-4332.18.9.1443
  10. MODEL OF WIND PRESSURES ON CIRCULAR FLAT ROOFS AND ITS APPLICATION TO LOAD ESTIMATION(Structures) vol.9, pp.18, 2003, https://doi.org/10.3130/aijt.9.25_2