中文摘要：

大尺度的建筑物和密集的建筑群都会对其周边的风环境造成较大的影响，并可能引起行人风环境问题。首先阐述了行人风环境评估的超越阈值概率方法，提出了综合考虑平均风和阵风影响的行人风环境评估标准；其次，结合某半开敞式的大跨空间建筑，统计了该地区风速气象观测资料并估计了概率参数；再次，使用计算流体力学数值风洞技术，获得了8个风向下的风场分布；最后，给出了场地全风向超越不舒适风速阈值的概率分布图，评价了该建筑的行人风环境。结果表明：该文所述方法能够给出复杂建筑的行人不舒适度和危险度详实评估结果。

英文摘要：

Both large scale constructions and dense building groups will change their ambient wind environment, which may also be accompanied by pedestrian wind comfort problems. Firstly, the approach of threshold exceedance probability to evaluate pedestrian wind environment is introduced, and a criterion that takes into account both mean and gust wind effects on people is proposed. Secondly, parameters of statistical wind meteorological data were estimated to investigate wind environment problems emerged from a semi-open type large-span building. Thirdly, the aerodynamic characteristics at pedestrian level are obtained using Computational Fluid Dynamics （CFD） simulation. Finally, the map of wind discomfort threshold exceedance probabilities for full directions is presented, and the pedestrian wind environment is evaluated. The results indicate that the present approach could give a detailed evaluation of pedestrian wind comfort and danger for complicated buildings.