| 大型机库屋面风荷载特性研究 |
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| 引用本文： | 顾志福,杨乐天,陈青松,李燕,裴永忠. 大型机库屋面风荷载特性研究[J]. 北京大学学报(自然科学版), 2008, 44(4): 501 |
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| 作者姓名： | 顾志福 杨乐天 陈青松 李燕 裴永忠 |
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| 作者单位： | 北京大学工学院，北京100871；中国航空工业规划设计研究院，北京100011；清华大学土木工程系，北京100084； |
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| 摘 要： | 通过风洞模拟实验对某大型机库平面屋顶风荷载进行了研究。结果表明，在一定风向角下屋面出现的单个或一对锥形涡流动结构诱导的局部极大负压峰值是导致屋面破坏的主要原因，女儿墙能稍微减小屋面的风压分布。分析了由于锥形涡引起的屋面平均风压和瞬时脉动风压的特点及其相互关系，讨论了实验获得的脉动压力和按规范计算的差别和原因。
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| 关 键 词： | 平面屋面 风荷载 风洞模拟 锥形涡 |
| 收稿时间： | 2007-07-03 |
Wind Loading on Plane Roof of a Large Hangar |
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| GU Zhifu,YANG Letian,CHEN Qingsong,LI Yan,PEI Yongzhong. Wind Loading on Plane Roof of a Large Hangar[J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2008, 44(4): 501 |
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| Authors: | GU Zhifu YANG Letian CHEN Qingsong LI Yan PEI Yongzhong |
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| Affiliation: | College of Engineering, Peking University, Beijing 100871; China Aeronautical Project and Design Institute, Beijing 10011; Department of Civil Engineering， Tsinghua University, Beijing 100084; |
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| Abstract: | Wind loading on the roof of a large hangar was investigated by wind tunnel simulation.Results show that under certain wind directions a conical vortex or a pair of conical vortex appears above the roof.The strong peak local negative pressure induced by the conical vortex is the main reason for the destruction on the roof and the parapet may reduce the pressure on the roof.The characteristic of time-mean and fluctuating pressure and their relationship were analyzed.The large difference between the value of fluctuating pressure obtained by the tests and that calculated by the code were discussed. |
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| Keywords: | plane roof wind loading wind tunnel simulation conical vortex |
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