基于能量的大跨屋盖结构共振响应模态耦合效应分析
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摘要
提出一种简单判别共振响应模态耦合效应的分析方法,该方法综合考虑结构的动力特性和风荷载特性,定义了共振响应模态耦合系数。依据该系数,通过几个特征参数(如结构模态和风荷载信息)就可以快捷的判断模态间共振响应耦合效应强弱,实现对共振响应耦合主导模态的选取。在此基础上,给出了大跨屋盖结构考虑模态间耦合效应的共振响应实用组合方法。最后,将该方法用于国家体育场屋盖结构风致动力响应分析,验证了其有效性。
A method to judge the magnitude of resonant response modal coupling effects is proposed in this paper.It considers systematically the dynamic characteristics of the structure as well as the characteristics of wind load,and then the resonant response modal coupling coefficient is defined.Based on this coefficient,a few parameters with respect to fluctuating wind loads and structural modes are sufficient to estimate the magnitude of resonant response modal coupling effects,and then the dominant-coupling modes of resonant response are determined.On this basis,a practical method to combine resonant response is obtained,which considers the modal coupling effects availably.Finally,the effectiveness of the proposed method is verified by the analysis of wind-induced vibration response of Beijing National Stadium.
A method to judge the magnitude of resonant response modal coupling effects is proposed in this paper.It considers systematically the dynamic characteristics of the structure as well as the characteristics of wind load,and then the resonant response modal coupling coefficient is defined.Based on this coefficient,a few parameters with respect to fluctuating wind loads and structural modes are sufficient to estimate the magnitude of resonant response modal coupling effects,and then the dominant-coupling modes of resonant response are determined.On this basis,a practical method to combine resonant response is obtained,which considers the modal coupling effects availably.Finally,the effectiveness of the proposed method is verified by the analysis of wind-induced vibration response of Beijing National Stadium.
引文
[1]Davenport A G.Gust loading factors[J].Journal of Structural Division,1967,93(3):11―34.
[2]Holmes J D.Effective static load distributions in wind engineering[J].Journal of Wind Engineering and Industrial Aerodynamics,2002,90(2):91―109.
[3]Zhou Y,Kareem A,Gu M.Equivalent static buffeting wind loads on structure[J].Journal of Structural Engineering,2000,126(8):989―992.
[4]周晅毅,顾明.大跨度屋盖结构考虑模态耦合的抖振共振响应分析方法[J].振动工程学报,2006,19(2):179―183.Zhou Xuanyi,Gu Ming.Analytical approach considering modal coupling effects for buffeting resonant response of large-span roof structures[J].Journal of Vibration Engineering,2006,19(2):179―183.(in Chinese)
[5]田玉基,杨庆山,范重,刘先明.国家体育场大跨度屋盖结构风振响应系数研究[J].建筑结构学报,2007,28(2):26―31.Tian Yuji,Yang Qingshan,Fan Zhong,Liu Xianming.Gust factors for large-span roof of the Natural stadium[J].Journal of Building Structures,2007,28(2):26―31.(in Chinese)
[6]Chen X Z,Kareem A.Coupled dynamic analysis and equivalent static wind loads on buildings with three-dimension modes[J].Journal of Structural Engineering,2005,131(7):1071―1082.
[7]陈波,武岳,沈世钊.大跨度屋盖结构等效静力风荷载中共振分量的确定方法研究[J].工程力学,2007,24(1):51―55,66.Chen Bo,Wu Yue,Shen Shizhao.Study of the resonant component of Equivalent static wind loads on large span roofs[J].Engineering Mechanics,2007,24(1):51―55,66.(in Chinese)
[8]星谷胜.随机振动分析[M].常保琦,译.北京:地震出版社,1997.Shinozuka.Analysis of random vibration[M].Translated by Chang Baoqi.Beijing:Earthquake Press,1997.(in Chinese)
[9]Kiureghian A D.Structural response to stationary excitation[J].Journal of the Engineering Mechanics Division,1980,106(6):1195―1213.
[10]杨世杰.风振响应分析中振型组合方法选取的指标[D].北京:北京交通大学,2008.Yang Shijie.Index of modes combination for wind respons[D].Beijing:Beijing Jiaotong University,2008.(in Chinese)
[11]埃米尔.希缪,罗伯特H.斯坎伦.风对结构的作用——风工程导论[M].刘尚培,译.上海:同济大学出版社,1992.Simil E,Scanlan R H.Wind effect on structures―An introduction of the wind engineering[M].Translated by Liu Shangpei.Shanghai:Tongji University Press,1992.(in Chinese)
[12]张昕,黄本才,徐晓明,林高.体育场悬挑屋盖空间风激动力响应和等效风荷载实用计算[J].建筑结构学报,2005,26(2):40―45.Zhang Xin,Huang Bencai,Xu Xiaoming,Lin Gao.Practical method for spatial wind-induced dynamic response and equivalent wind load of cantilevered roofs of stadiums[J].Journal of Building Structures,2005,26(2):40―45.(in Chinese)
[13]Li Y X,Yang Q S,Tian Y J.Identification of dominant modes to wind-induced vibration response of large-span roofs[C].Proceedings of the10th International Symposium on Structural Engineering for Young Experts.Changsha,Hunan,China,Science Press,2008:1051―1056.
[2]Holmes J D.Effective static load distributions in wind engineering[J].Journal of Wind Engineering and Industrial Aerodynamics,2002,90(2):91―109.
[3]Zhou Y,Kareem A,Gu M.Equivalent static buffeting wind loads on structure[J].Journal of Structural Engineering,2000,126(8):989―992.
[4]周晅毅,顾明.大跨度屋盖结构考虑模态耦合的抖振共振响应分析方法[J].振动工程学报,2006,19(2):179―183.Zhou Xuanyi,Gu Ming.Analytical approach considering modal coupling effects for buffeting resonant response of large-span roof structures[J].Journal of Vibration Engineering,2006,19(2):179―183.(in Chinese)
[5]田玉基,杨庆山,范重,刘先明.国家体育场大跨度屋盖结构风振响应系数研究[J].建筑结构学报,2007,28(2):26―31.Tian Yuji,Yang Qingshan,Fan Zhong,Liu Xianming.Gust factors for large-span roof of the Natural stadium[J].Journal of Building Structures,2007,28(2):26―31.(in Chinese)
[6]Chen X Z,Kareem A.Coupled dynamic analysis and equivalent static wind loads on buildings with three-dimension modes[J].Journal of Structural Engineering,2005,131(7):1071―1082.
[7]陈波,武岳,沈世钊.大跨度屋盖结构等效静力风荷载中共振分量的确定方法研究[J].工程力学,2007,24(1):51―55,66.Chen Bo,Wu Yue,Shen Shizhao.Study of the resonant component of Equivalent static wind loads on large span roofs[J].Engineering Mechanics,2007,24(1):51―55,66.(in Chinese)
[8]星谷胜.随机振动分析[M].常保琦,译.北京:地震出版社,1997.Shinozuka.Analysis of random vibration[M].Translated by Chang Baoqi.Beijing:Earthquake Press,1997.(in Chinese)
[9]Kiureghian A D.Structural response to stationary excitation[J].Journal of the Engineering Mechanics Division,1980,106(6):1195―1213.
[10]杨世杰.风振响应分析中振型组合方法选取的指标[D].北京:北京交通大学,2008.Yang Shijie.Index of modes combination for wind respons[D].Beijing:Beijing Jiaotong University,2008.(in Chinese)
[11]埃米尔.希缪,罗伯特H.斯坎伦.风对结构的作用——风工程导论[M].刘尚培,译.上海:同济大学出版社,1992.Simil E,Scanlan R H.Wind effect on structures―An introduction of the wind engineering[M].Translated by Liu Shangpei.Shanghai:Tongji University Press,1992.(in Chinese)
[12]张昕,黄本才,徐晓明,林高.体育场悬挑屋盖空间风激动力响应和等效风荷载实用计算[J].建筑结构学报,2005,26(2):40―45.Zhang Xin,Huang Bencai,Xu Xiaoming,Lin Gao.Practical method for spatial wind-induced dynamic response and equivalent wind load of cantilevered roofs of stadiums[J].Journal of Building Structures,2005,26(2):40―45.(in Chinese)
[13]Li Y X,Yang Q S,Tian Y J.Identification of dominant modes to wind-induced vibration response of large-span roofs[C].Proceedings of the10th International Symposium on Structural Engineering for Young Experts.Changsha,Hunan,China,Science Press,2008:1051―1056.
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