EXPERIMENTAL INVESTIGATION OF WIND LOAD ON LARGE-SPAN CYLINDRICAL LATTICED SHELL

Light-quality roof is usually adopted in the structure of a dry coal shed, which is a typical wind sensitive structure. The wind load is a problem that cannot be ignored. In order to obtain accurate wind load data for the structural design, the pressure measurements of a wind tunnel test on a rigid structural model have been carried out based on a thermal power plant coal shed project with a large span cylindrical reticulated shell. The aerodynamic influence of wind angle and surrounding buildings on the coal shed shape coefficient is investigated. The results show that the shape coefficient value at measure points is larger when the intersection angle between the wind and the mountain wall is 90°~120°. A larger wind load acts on the semi-closed gable end of the structure when the intersection angle is 90°, and the coal roof will have greater wind loading. According to the research, the shape coefficient is relatively large at the top of a coal model, the roof structure of the coal shed should be strengthened.