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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2009, Vol. 10 Issue (3): 337-344    DOI: 10.1631/jzus.A0820430
Civil and Mechanical Engineering     
3D wind-induced response analysis of a cable-membrane structure
Jun-jie LUO, Da-jian HAN
State Key Laboratory of Subtropical Architecture Science, School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China
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Abstract  Wind loading is a dominant factor for design of a cable-membrane structure. Three orthogonal turbulent components, including the longitudinal, lateral and vertical wind velocities, should be taken into account for the wind loads. In this study, a stochastic 3D coupling wind field model is derived by the spectral representation theory. The coherence functions of the three orthogonal turbulent components are considered in this model. Then the model is applied to generate the three correlated wind turbulent components. After that, formulae are proposed to transform the velocities into wind loads, and to introduce the modified wind pressure force. Finally, a wind-induced time-history response analysis is conducted for a 3D cable-membrane structure. Analytical results indicate that responses induced by the proposed wind load model are 10%~25% larger than those by the conventional uncorrelated model, and that the responses are not quite influenced by the modified wind pressure force. Therefore, we concluded that, in the time-history response analysis, the coherences of the three orthogonal turbulent components are necessary for a 3D cable-membrane structure, but the modified wind pressure force can be ignored.

Key words： Cable-membrane structures      Time-history analysis      Coherence      Gust response factor     
Received: 09 June 2008     
CLC:  TU318  
  TU393.3  
  TU311.3  
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Jun-jie LUO
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Cite this article:

Jun-jie LUO, Da-jian HAN. 3D wind-induced response analysis of a cable-membrane structure. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2009, 10(3): 337-344.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A0820430     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2009/V10/I3/337

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