数值风洞技术与风荷载规范研究

Research on Numerical Wind Tunnel Technology and Wind Load Code

现行规范在结构抗风设计上缺乏足够的指导依据,如规则结构在不同风向角上的风压分布,高层建筑与低矮建筑整体阻力系数的差异等。采用CFD数值风洞技术,验证其可靠性并研究低矮建筑双坡屋面表面风压在不同风向角下的分布特点,同时根据规范讨论高度对正多边形建筑整体阻力系数的影响。

The current code lacks sufficient guidance in the wind resistance design of structures, such as the wind pressure distribution of regular structures at different wind directions, and the difference of overall resistance coefficient between high-rise buildings and low-rise buildings, etc. The CFD numerical wind tunnel technology is used to verify its reliability and to study the distribution characteristics of wind pressure on the double slope roof surface of low-rise buildings under different wind directions. At the same time, according to the code, the influence of height on the overall resistance coefficient of regular polygon buildings is discussed.