| 球壳结构风压相关性研究（英文） |
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| 引用本文： | 尼尼昂,叶继红.球壳结构风压相关性研究（英文）[J].东南大学学报,2010,26(1):100-106. |
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| 作者姓名： | 尼尼昂 叶继红 |
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| 作者单位： | 东南大学混凝土与预应力混凝土结构教育部重点实验室; |
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| 基金项目： | The National Natural Science Foundation of China (No.50678036) |
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| 摘 要： | 引入相关函数以描述不同矢跨比的球壳上2点间的风压相关性.根据风洞试验的风压测量数据,研究了2点间距离不同、2点连线与风向间角度不同时相干函数的大小.结果表明球壳结构上毗邻的2点在低频段具有强相关性,而非相邻点的风压相关性不明显.风压相关性随2点距离的减小而增大.距离相同时,风压相关性在顺风向最强,在横风向最弱.根据风洞试验数据,提出了球壳结构风压相关性指数模型,并给出了确定该模型的详细过程.结果表明该指数相关函数模型能恰当地描述距离较近2点间的相关性,且能较好地反映风向角变化的影响.此外,根据准定常理论对风压、风速间的相关性进行了研究,结果表明准定常理论对球壳结构风压、风速间的相关性不适用.
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| 关 键 词： | 球壳 风压相关性 风压指数相关函数模型 准定常理论 |
Coherence of wind pressure on domes |
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| Nyi Nyi Aung,Ye Jihong.Coherence of wind pressure on domes[J].Journal of Southeast University(English Edition),2010,26(1):100-106. |
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| Authors: | Nyi Nyi Aung Ye Jihong |
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| Institution: | Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education;Southeast University;Nanjing 210096;China |
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| Abstract: | The concept of the coherence function is adopted to find the wind pressure correlation of two points on domes of different rise-span ratios. The pressure measurements are made on the dome roof models by the wind tunnel test. The coherence functions for different separation distances at several directions of the domes from different wind directions are examined. The results show that there is a strong correlation for two adjacent points at low frequency, but not for non-adjacent points. The coherence of the ... |
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| Keywords: | domes coherence of wind pressure exponential coherence model of wind pressure quasi-steady theory |
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