Wind Tunnel Test Research for Wind Pressure on the Roof of Large Scale Stadium

The flow on the cantilevered roof of large-scale stadium is very complicated when attacked by wind, so the wind tunnel test research on the roof's wind load is necessary. Based on the results of wind tunnel test for pressure on the roof of the Olympic Stadium in Guangdong Province, the characteristics of the roof's flow and wind pressure distribution are analyzed in this paper. The results of analysis show: On the up-surface of the large-scale stadium roof, there is mainly negative wind pressure distributed for each wind direction. On most part of the roof, the negative wind pressure is comparatively small and distributed uniformly, but on the windward edge and sub-windward edge, the negative wind pressure is comparatively large, especially at the cantilevered roof with a big upward inclination. In some concave area, there is sometimes very small positive wind pressure; On the down-surface windward butt edge, there is mainly positive wind pressure distributed and on the down-surface lee area, there is small uniform negative wind pressure distributed.