Abstract

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Title:: Experiment of Wind Pressure Characteristics of “Angel Wings” Stadium

Author(s):: LI Qiu-sheng; LIANG Xiao-juan; CHEN Fu-bin; WANG Xiang-jun; College of Civil Engineering, Hunan University

Keywords:: stadium; large-span roof; wind tunnel test; wind pressure coefficient; non-Gaussian probability distribution; peak factor

Abstract:: Mean and fluctuating pressure coefficients of Meizhou stadium were obtained based on wind tunnel test and the characteristics of wind pressures were analyzed in detail. The results show that negative pressures occur on the roof in general, and flow separation at the bulge of the roof causes high negative pressures. The wind pressures on the upper and lower surfaces of the cantilevered part of the roof will have a superimposing effect in the upwind direction when wind flow comes from low roof to high roof region. The third and fourth order statistical moments of wind pressures are employed to identify the regions subjected to nonGaussian pressures which are mainly located in flow separation zone and vortex affected area. Gaussian and 3-parameters Gamma distributions are capable for the superior description of the wind pressure probability characteristics on the stadium surfaces. The extreme wind pressures with nonGaussian features can be estimated accurately by the Sadek-Simiu method which considers the non-Gaussian characteristics of fluctuating wind pressures.