Abstract
Wind tunnel tests on the rigid model of large-span shallow spherical shell roof structure were carried out. The variation rule and the calculation method for the average shape coefficient of the fluctuating wind pressure under six different typical wind directions were obtained. The wind pressure distribution of the node deflection and cross section stress was numerically investigated and analyzed. Meanwhile, the effect of mechanics-flow form of the typical spherical shell structure on the wind pressure distribution was analyzed quantitatively. In this study, it is found that the results of numerical simulation agree well with the wind tunnel test data. The study on the mechanical characteristics, as well as the wind vibration research, of the spherical shell structure in different working conditions provides a reliable theoretical basis for the mechanical index of the wind vibration.
Highlights
Large-span roof structure has been widely used for various large public buildings such as hangars, gymnasiums, and exhibition pavilions in recent decades. e thin shell structure is considered as a great technological progress compared with the large-span roof structure because they can cover a large free area with a roof having a thickness of only a few centimeters [1]
Experimental Results and Discussion e wind pressure coefficients of six different wind directions are displayed in Figure 3, where m represents the number of pressure measurement points
It was obtained that the results of different experiments in the present study showed a relatively higher level of repeatability, which indicates that the results of present experimental investigation assumed typical response of thin spherical shell roof structures
Summary
Large-span roof structure has been widely used for various large public buildings such as hangars, gymnasiums, and exhibition pavilions in recent decades. e thin shell structure is considered as a great technological progress compared with the large-span roof structure because they can cover a large free area with a roof having a thickness of only a few centimeters [1]. Some investigations on the wind-induced dynamic response and stress distribution of large-span roof structures have been performed. Every single structure has its own special characteristics, and wind tunnel tests of a scaled model are considered essential in order to accurately assess the effect of wind pressure on the large-span structure [9]. Wind tunnel tests are employed to obtain information considering the vibration response or the wind pressure distribution of structures due to the applied wind. To determine the mean and fluctuating wind load characteristics, a shallow spherical shell roof structure (with rise-to-span ratio less than 1/5) was investigated by a wind tunnel test on a scaled model. E wind-induced responses of this thin spherical shell roof structure provided detailed understanding and enriched corresponding database of large-span spatial roof structure ANSYS software and midas gen software were used to simulate the wind pressure filed of this shallow spherical shell roof structure under different wind directions. e wind-induced responses of this thin spherical shell roof structure provided detailed understanding and enriched corresponding database of large-span spatial roof structure
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