大跨开合屋盖风压特性研究

Large-span roof structure has become one of the main forms of building structure,and the retractable roof structure is a new structure form in recent years.The research on large span retractable roof by numerical simulation in China is still in its infancy stage.This paper establishes four roof models with different opening and closing states,analyzes the wind pressure characteristics of the roof surface under different opening and closing states,different wind angles,and different wind speeds,and conducts the analysis when the roof is fully opened.The partition then calculates the partition size coefficient and gives a reasonable suggested value for the partition,which provides an effective reference for future actual projects.The results show that the wind direction angle has a great influence on the distribution of wind pressure on the roof surface; especially the 30° and 60° wind direction angles have a prominent influence on the distribution of wind pressure coefficient.The opening and closing of the roof also significantly affects the wind pressure distribution,but has little influence on the wind pressure coefficient value.