Research on Wind Pressure Distribution Characteristics of Y-Shaped Canopies with Platform Columns in Coastal Areas

The canopy with platform columns is a long-span space structure， which is very sensitive to the effect of wind load. At the same time， due to the special function of high-speed railway station， there are relatively few studies on the interaction between the Y-shaped canopy with platform columns and wind load in coastal areas. In order to study the wind pressure distribution characteristics and shape factors of wind load on the surface of the Y-shaped canopy with platform columns in coastal areas， a numerical simulation model of the canopy was established by the Computational Fluid Dynamics （CFD） method for analysis. The results showed that the numerical simulation model established by CFD method was consistent with the experimental results of wind tunnel in the literature and had high credibility； under the action of 0° to 90° directional angle， the wind pressure on the upper surface of the canopy would increased with the increase of wind direction angle， and the wind pressure on the lower surface would not change much， meanwhile， the most unfavorable wind direction angle was determined to be 0°， in which the canopy would produce the tendency of torsional damage and affect the stability of the canopy. The shape factors of wind load of the surface of Y-shaped canopies in coastal areas were obtained in the condition of the most unfavorable wind angle of 0°， the adjacent canopy had little effect on the wind load of the studied canopy.