NUMERICAL SIMULATION STUDY OF WIND LOAD 36-METER SPAN PARTIALLY LOCAL OPEN CANOPY
With the rapid development of China's economy and construction industry, the demand for high-speed rail is increasing day by day. In case of inclement weather, a canopy should be set up above the platform for visitors to wait normally on the platform. To clarify the wind load carrier type coefficient of the 36-meter span local open can-opy, the surface shape coefficient of the canopy is studied and analyzed based on the CFD numerical simulation method. The realizable k-ε turbulence model is used to study the numerical simulation of the canopy, and the influ-ence of different wind angles on the wind pressure distribution law and body shape coefficient distribution on the canopy surface is studied in detail. The results show that the extreme value of the body shape coefficient appears at the windward edge of the canopy due to the impact of the incoming flow. The wind pressure distribution on the sur-face of the canopy changes with the change of wind direction, and the extreme value gradually decreases with the gradual increase of wind direction. Under the action of different wind directions, the two sides of the canopy are often subjected to opposite forces, which may cause the local open canopy to twist along the direction of the station line, thus affecting the stability of the structure. The results of this study may provide a basis for the wind-resistant design of such structures.
local open canopywind loadsnumerical simulationbody size factorwind direction angle
万方数据
维普
