【摘要】 基于fluent 6.3软件对房屋外形尺寸为6 m×4.5 m×4.34 m的低矮房屋进行了不同风向角下的数值模拟,通过与风洞试验对比发现模拟方法能够较好地模拟强风作用下低矮房屋屋面的风压分布。在此基础上,改变屋面的出山和挑檐形式,进行不同风向角下的数值模拟,研究细部构造对低矮房屋屋面风压的影响。研究结果表明:在斜向风的作用下,马头型出山和透风型出山均能够减小房屋屋面的风压,但透风型出山的效果更好。檐沟、弯起挑檐和平挑檐均会使得屋面的平均风压增大,对于屋面抗风不利,最有利的挑檐抗风形式还是普通挑檐形式。更多还原

【Abstract】 A size of 6 m×4.5 m×4.34 m low houses were carried out based on the numerical simulation of different wind angle with the use of Fluent 6.3 software,compared with wind tunnel test,the simulation method can better simulate the wind pressure distribution under the action of strong wind.Based on this model,with change of the forms of the protruding gable and eave and numerical simulation under different wind direction,effect of the roof detailing of low rise building roof pressure was studied.The results show that:under the oblique wind,horse head type and ventilated type can reduce the pressure on low rise building roof,but the ventilated type works better.Gutter,bent eave and horizontal eave increase the wind pressure on building roof,which is destructive for wind-resistance.The most advantageous form of eave is the ordinary form of eave.更多还原