| 基于CQC方法的大跨屋盖结构随机风振响应计算 |
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| 引用本文： | 王国砚,黄本才,林颖儒,徐晓明.基于CQC方法的大跨屋盖结构随机风振响应计算[J].空间结构,2003,9(4):22-26. |
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| 作者姓名： | 王国砚 黄本才 林颖儒 徐晓明 |
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| 作者单位： | 1. 固体力学教育部重点实验室,同济大学工程力学与技术系,上海,200092
2. 上海现代建筑设计(集团)有限公司,上海,200041 |
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| 摘 要： | 本从线性结构随机振动响应计算的CQC方法出发，推导出适合于大跨屋盖结构随机风振响应统计量精细计算的算式，式中考虑了不同振型响应之间互相关的影响；同时指出，如需按CQC方法进行精细计算，就必须首先获得结构各点风荷载之间互功率谱密度函数的实部和虚部。
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| 关 键 词： | 大跨屋盖结构 风振响应 cQc方法 随机振动 |
| 文章编号： | 1006-6578(2003)04-0022-05 |
| 修稿时间： | 2003年1月10日 |
Solution of wind induced random vibration of large span roof structures based on CQC method |
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| WANG Guo-yan,HUANG Ben-cai,LIN Ying-ru,XU Xiao-ming.Solution of wind induced random vibration of large span roof structures based on CQC method[J].Spatial Structures,2003,9(4):22-26. |
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| Authors: | WANG Guo-yan HUANG Ben-cai LIN Ying-ru XU Xiao-ming |
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| Affiliation: | WANG Guo-yan~1,HUANG Ben-cai~1,LIN Ying-ru~2,XU Xiao-ming~2Department of Engineering Mechanics and Technology,Tongji University,Shanghai 200092,China,2.Shanghai Institute of Architectural Design & Research |
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| Abstract: | A precise formula for statistical calculation of wind induced random vibration of large span roof structures is derived in this paper, based on Complete-Quadratic-Combination (CQC) method for random vibration of linear systems. Cross-correlation between different modes is considered in the formula. It is also pointed out that, only after both real part (or co-spectrum) and imaginary part (or quadrature spectrum) of cross spectra between random wind loads of any two points are obtained, the precise calculation based on the CQC method can be carried out. |
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| Keywords: | large span roof structure wind induced random vibration CQC method |
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