Experimental Study of Wind Pressure Distributions on a Long-span Complex Roof Structure

Based on the wind-tunnel test of the rigid model of Jilin Railway Station,the contours of the mean and fluctuating wind pressure coefficients were presented and discussed.Analyses of the characteristics of the wind pressure distributions were conducted.It was found that negative pressures(suctions) occurred on the long-span roof in general,high negative pressure coefficients occurred on the eaves,cantilevered roof and the bulge part of the roof on the main station building on the windward,and relatively smaller suctions occurred on the railway platform awning because of the open surrounding configurations there.These conclusions will be useful in the wind-resistant design of long-span roof structures with complex shapes.