Wind load test on model of a sports and exhibition center long span roof

The test conditions and main results of wind tunnel test for an exhibition hall and a stadium long span roof of a Sport Convention Center are introduced.The mean and fluctuating wind pressures of the roof are obtained and analyzed by typical measuring point analysis approach.The ratios between the fluctuating wind pressures to total wind loads are discussed.The design wind loads for cladding structure by using the code method and statistical method are computed and then compared.Results show that the upwind mean and fluctuating wind pressure coefficients of the leading edge of the roof are comparatively large,the wind loads for the cladding structure of the exposition from the code method are mostly smaller than those from the statistical method,and the wind loads for the cladding structure of the stadium from the code method are all smaller than those from the statistical method.In the design of long span roof,the larger one should be selected as the characteristic value of wind load in separated areas.