| 矩形高层建筑横风向动力风荷载解析模型 |
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| 引用本文： | 梁枢果,刘胜春,张亮亮,李明水,王奇志,杨琳.矩形高层建筑横风向动力风荷载解析模型[J].空气动力学学报,2002,20(1):32-39. |
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| 作者姓名： | 梁枢果 刘胜春 张亮亮 李明水 王奇志 杨琳 |
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| 作者单位： | 1. 武汉大学土木建筑工程学院,湖北武汉,430002
2. 中国空气动力研究与发展中心,四川绵阳,621000 |
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| 基金项目： | 国家自然科学基金资助项目 (批准号 596 780 50 ) |
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| 摘 要： | 通过研究不同长宽比，高宽比的矩形棱柱体在边界层风洞中典型迎角下的机警风力，提出了矩形高层建筑横风力功率谱密度，均方根升力系数和Strouhal数的经验公式，并对相干函数作了一定的探讨，建立了完整的横风向动力风荷载解析模型，该模型和试验结果吻合较好，证明它是合理有效的，可此基础上建立高层建筑横风向动力响应的频域计算方法。
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| 关 键 词： | 高层建筑 风荷载 风洞试验 升力系数 横风力谱 动力风荷载解析模型 |
| 文章编号： | 0258-1825(2002)01-0032-08 |
| 修稿时间： | 2001年1月19日 |
Analytical model of acrosswind dynamic loads on rectangular tall buildings |
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| Liang Shu guo ,Liu Sheng chun ,Zhang liang liang ,Li Ming shui ,Wang Qi zhi ,Yang Lin.Analytical model of acrosswind dynamic loads on rectangular tall buildings[J].Acta Aerodynamica Sinica,2002,20(1):32-39. |
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| Authors: | Liang Shu guo Liu Sheng chun Zhang liang liang Li Ming shui Wang Qi zhi Yang Lin |
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| Institution: | Liang Shu guo 1,Liu Sheng chun 1,Zhang liang liang 2,Li Ming shui 2,Wang Qi zhi 2,Yang Lin 2 |
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| Abstract: | By investigating acrosswind forces on rectangular cylinders with various side ratios and aspect ratios at normal attack angle in a boundary layer wind tunnel, this paper presents empirical formula of acrosswind force spectra, RMS lift coefficients and Strouhal numbers of rectangular tall buildings, and coherence functions of acrosswind force are also probed. Thus a complete analytical model of acrosswind dynamic loads on rectangular tall buildings is established. This model is in good agreement with the experimental results obtained by wind tunnel tests, so it is reliable and applicable. A calculation method based on this model can be developed to evaluate wind-induced acrosswind responses of rectangular tall buildings in frequency domain. |
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| Keywords: | tall buildings wind loads wind tunnel test lift coefficient acrosswind force spectrum |
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