| 大悬挑屋盖脉动风模态力谱与位移谱 |
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| 引用本文： | 黄本才,齐辉,陈勇. 大悬挑屋盖脉动风模态力谱与位移谱[J]. 同济大学学报(自然科学版), 2004, 32(5): 622-626 |
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| 作者姓名： | 黄本才 齐辉 陈勇 |
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| 作者单位： | 同济大学,固体力学教育部重点实验室,上海,200092 |
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| 摘 要： | 以风洞实验的脉动风压实测记录为基础 ,运用模态分析法研究了越南国家体育场大悬挑屋盖脉动风的模态力谱、模态位移自谱和互谱 ,互谱包括实部和虚部 ,分析了它们的特性和规律性 ,为屋盖模态位移、多模态和交叉项几何动位移影响的研究提供了必要的基础 ,也为在频域内进一步研究和提出抗风实用分析方法提供参考 .
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| 关 键 词： | 大悬挑屋盖 模态力谱 模态位移谱 |
| 文章编号： | 0253-374X(2004)05-0622-05 |
Fluctuating Wind Power Spectral Density of Mode Force and Mode Displacement of Large Cantilevered Roof |
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| HUANG Ben-cai,QI Hui,CHEN Yong. Fluctuating Wind Power Spectral Density of Mode Force and Mode Displacement of Large Cantilevered Roof[J]. Journal of Tongji University(Natural Science), 2004, 32(5): 622-626 |
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| Authors: | HUANG Ben-cai QI Hui CHEN Yong |
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| Abstract: | Based on the fluctuating wind pressure measured in wind tunnel tests,we studied the power spectral density (PSD) and the cross spectral density (CSD) including real part and imaginary part of mode force and mode displacement of the large cantilevered roof of National Sports Complex of Vietnam.The characteristics of the PSD and CSD were presented subsequently.The work in the paper is the base for the study in the effect of the multimode and cross part of mode displacement on geometrical displacement of the roof,and it is necessary for the further study and development of the practical analysis method for structural wind resistance in frequency domain. |
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| Keywords: | large cantilevered roof power spectral density of mode force power spectral density of mode displacement |
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