| 首都博物馆新馆挑檐结构的平均风压研究 |
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| 引用本文： | 陈青松,陈学锐,蔡峰,杨艳静,顾志福. 首都博物馆新馆挑檐结构的平均风压研究[J]. 实验流体力学, 2006, 20(2): 18-24. DOI: 10.3969/j.issn.1672-9897.2006.02.004 |
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| 作者姓名： | 陈青松 陈学锐 蔡峰 杨艳静 顾志福 |
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| 作者单位： | 北京大学力学与工程科学系,北京,100871 |
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| 基金项目： | 国家自然科学墓金资助项目（10172008）. |
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| 摘 要： | 以首都博物馆新馆为例,通过风洞模拟实验研究了平屋盖大跨度挑檐结构上装有百叶结构时的平均风荷载特性,给出了屋盖整体及挑檐结构上不同风向角的压力分布规律.文中特别讨论了百叶结构对挑檐上平均风压分布的影响.结果表明:在挑檐前檐安装百叶结构对挑檐结构风压的影响非常大.在不利风向角,百叶结构能有效减小挑檐结构上表面的负压.这些结论对类似结构的抗风设计具有一定的指导意义.
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| 关 键 词： | 挑檐结构 风压 百叶结构 风洞试验 |
| 文章编号： | 1672-9897（2006）02-0018-07 |
| 收稿时间： | 2005-05-30 |
| 修稿时间： | 2005-10-19 |
Wind load on the cantilevered-structure of capital new museum's roof |
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| CHEN Qing-song,CHEN Xue-rui,CAI Feng,YANG Yan-jing,GU Zhi-fu. Wind load on the cantilevered-structure of capital new museum's roof[J]. Experiments and Measur in Fluid Mechanics, 2006, 20(2): 18-24. DOI: 10.3969/j.issn.1672-9897.2006.02.004 |
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| Authors: | CHEN Qing-song CHEN Xue-rui CAI Feng YANG Yan-jing GU Zhi-fu |
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| Affiliation: | Department of Mechanics and Engineering Science, Peking University, Beijing 100871, China |
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| Abstract: | Characteristics of mean wind load on a long-span-cantilevered-structure,which is designed for capital new museum's flat roof,are studied in wind tunnel.Pressure distributions on the cantilevered structures at various wind directions are obtained.The effect of mean wind pressure on the cantilevered structure by fitting a louver structure is discussed in detail.The results show that fitting a louver structure on the front part of the cantilevered structure has a great influence on wind pressure distributions on the cantilevered structure.The louver structure reduces the negative pressure effectively on upside of the cantilevered structure as the cantilevered structure suffers from the most disadvantageous wind directions.These conclusions can be useful for the wind load design of similar structures. |
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| Keywords: | cantilevered structure wind pressure louver structure wind tunnel test |
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