| 高层矩形建筑横风向风力特性试验研究 |
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| 引用本文： | 严亚林,金新阳,唐意,武林. 高层矩形建筑横风向风力特性试验研究[J]. 建筑结构, 2011, 0(11) |
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| 作者姓名： | 严亚林 金新阳 唐意 武林 |
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| 作者单位： | 中国建筑科学研究院建研科技股份有限公司; |
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| 基金项目： | 国家自然科学基金重大研究计划面上项目(9081505) |
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| 摘 要： | 在边界层风洞中对10个典型超高层建筑模型进行测压试验,获得了测点层的顺风向、横风向和扭转方向的风荷载,整理了横风向风荷载的功率谱、相关系数和水平、竖向相干函数,分析了流场绕流的特点,总结了横风向风力对扭转的贡献。得到如下结论:选取分离点作为参考点时,横风向水平相关性随厚宽比增加变化较大,通过确定其零点位置可以定量确定再附点位置;横风向风力竖向相关性受所选基点位置影响程度较小;竖向相干性随厚宽比增大而降低;模型厚宽比大于1.5时,结构扭矩谱几乎全部由横风向贡献。
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| 关 键 词： | 超高层建筑 厚宽比 功率谱 相关系数 相干函数 |
Wind tunnel test study on across-wind loads of rectangular super high-rise buildings |
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| Yan Yalin,Jin Xinyang,Tang Yi,Wu Lin. Wind tunnel test study on across-wind loads of rectangular super high-rise buildings[J]. Building Structure, 2011, 0(11) |
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| Authors: | Yan Yalin Jin Xinyang Tang Yi Wu Lin |
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| Affiliation: | Yan Yalin,Jin Xinyang,Tang Yi,Wu Lin(CABR Technology Co.,Ltd.,China Academy of Building Research,Beijing 100013,China) |
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| Abstract: | Based on 10 pressure tests in boundary layer wind tunnel for rectangular super high-rise buildings,wind loads in along-wind,across-wind and torsional directions were calculated.Across-wind load power spectrum,relation coefficient and coherent function in horizontal and vertical were analyzed for the character of the wind flow field.Contribution of across-wind force for torsion was summarized.The summarized results indicate that across-wind horizontal relation coefficient varies with the depth-width ratio wh... |
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| Keywords: | super high-rise building depth-width ratio power spectrum relation coefficient coherent function |
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