Techno Press
Techno Press

Wind and Structures   Volume 25, Number 6, December 2017, pages 589-608
DOI: http://dx.doi.org/10.12989/was.2017.25.6.589
 
Non-Gaussian approach for equivalent static wind loads from wind tunnel measurements
Wafaa Kassir, Christian Soize, Jean-Vivien Heck and Fabrice De Oliveira

 
Abstract     [Full Text]
    A novel probabilistic approach is presented for estimating the equivalent static wind loads that produce a static response of the structure, which is \"equivalent\" in a probabilistic sense, to the extreme dynamic responses due to the unsteady pressure random field induced by the wind. This approach has especially been developed for complex structures (such as stadium roofs) for which the unsteady pressure field is measured in a boundary layer wind tunnel with a turbulent incident flow. The proposed method deals with the non-Gaussian nature of the unsteady pressure random field and presents a model that yields a good representation of both the quasi-static part and the dynamical part of the structural responses. The proposed approach is experimentally validated with a relatively simple application and is then applied to a stadium roof structure for which experimental measurements of unsteady pressures have been performed in boundary layer wind tunnel.
 
Key Words
    equivalent static wind loads; non-Gaussian unsteady pressure field; polynomial chaos expansion; quasi-static responses; stochastic dynamics; extreme value statistics
 
Address
Wafaa Kassir: Universite Paris-Est, Modelisation et Simulation Multi-Echelle, MSME UMR 8208 CNRS, 5 Bd
Descartes, 77454 Marne-la-Vallee, France;
Centre Scientifique et Technique du Bˆatiment (CSTB), 11 Rue Henri Picherit, 44300 Nantes, France
Christian Soize: Universite Paris-Est, Modelisation et Simulation Multi-Echelle, MSME UMR 8208 CNRS, 5 Bd
Descartes, 77454 Marne-la-Vallee, France
Jean-Vivien Heck and Fabrice De Oliveira: Centre Scientifique et Technique du Bˆatiment (CSTB), 11 Rue Henri Picherit, 44300 Nantes, France
 

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