Wind and Structures

Techno-Press (테크노프레스)
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Simulation of multivariate non-Gaussian wind pressure on spherical latticed structures

  • Aung, Nyi Nyi (Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University) ;
  • Ye, Jihong (Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University) ;
  • Masters, F.J. (Department of Civil and Coastal Engineering, University of Florida)
  • Received : 2010.06.18
  • Accepted : 2011.07.20
  • Published : 2012.05.25
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Abstract

Multivariate simulation is necessary for cases where non-Gaussian processes at spatially distributed locations are desired. A simulation algorithm to generate non-Gaussian wind pressure fields is proposed. Gaussian sample fields are generated based on the spectral representation method using wavelet transforms method and then mapped into non-Gaussian sample fields with the aid of a CDF mapping transformation technique. To illustrate the procedure, this approach is applied to experimental results obtained from wind tunnel tests on the domes. A multivariate Gaussian simulation technique is developed and then extended to multivariate non-Gaussian simulation using the CDF mapping technique. It is proposed to develop a new wavelet-based CDF mapping technique for simulation of multivariate non-Gaussian wind pressure process. The efficiency of the proposed methodology for the non-Gaussian nature of pressure fluctuations on separated flow regions of different rise-span ratios of domes is also discussed.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China

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