| X型超高层建筑扭转风荷载谱计算模型研究 |
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| 引用本文： | 金虎,楼文娟,沈国辉.X型超高层建筑扭转风荷载谱计算模型研究[J].空气动力学学报,2009,27(2). |
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| 作者姓名： | 金虎 楼文娟 沈国辉 |
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| 作者单位： | 浙江大学建筑工程学院,浙江,杭州,310027 |
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| 摘 要： | 通过X型超高层建筑模型多点同步测压风洞试验,文中研究了高层建筑扭转风荷载系数平均值、均方根值沿高度的变化规律.提出了X形高层建筑扭转动力风荷载功率谱密度函数的数学计算模型,并根据试验数据对模型参数进行了拟合,结果表明该计算模型与风洞试验结果吻合较好.文中还探讨了各层扭转动力风荷载的相干特性,以Vickery提出的尾流激励相干函数公式为计算模型,根据风洞试验数据利用最小二乘法拟合了模型参数,并给出拟合的计算参数.文中最后研究了扭转风荷载与顺风向、横风向风荷载的相干性,并提出了相应的数学计算模型,结果证明该模型与试验数据基本一致.
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| 关 键 词： | 高层建筑 扭转风荷载 功率谱 相干函数 |
Computational model investigation of torsional wind load on high-rise building with X-shape |
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| JIN Hu,LOU Wen-juan,SHEN Guo-hui.Computational model investigation of torsional wind load on high-rise building with X-shape[J].Acta Aerodynamica Sinica,2009,27(2). |
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| Authors: | JIN Hu LOU Wen-juan SHEN Guo-hui |
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| Institution: | College of Civil Engineering and Architecture;Zhejiang University;Hangzhou 310027;China |
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| Abstract: | Based on the multi-points synchronous pressure test in wind tunnel for the building with X shape,average distribution law and root mean square(rms) of torque coefficients along height direction are discussed.The computational model of power spectrum density(psd) for torque wind load is proposed and fitting calculation is conducted according to wind tunnel test data.The mathematical model is proved to agree well with test result.Coherence functions between the dynamic torque wind load of different heights ar... |
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| Keywords: | high-rise building torsional wind load power spectrum coherence function |
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