桅杆结构风振系数计算方法研究
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摘要
研究桅杆风振系数的计算方法,给出了基于SRSS法(平方和开平方)和CQC法(完全组合)的桅杆风振系数表达式。结合算例讨论SRSS法与CQC法的差异,并采用时域法对频域分析结果进行验证。结果表明,可采用SRSS法且只考虑前五阶振型的贡献计算桅杆风振系数;可不考虑角度风、纤绳初应力、顶层与底层纤绳刚度比对风振系数的影响。
The calculation method of wind vibration coefficient of guyed masts was studied,and the expressions of wind vibration coefficient of guyed masts were given respectively based on the SRSS(square sum and square root) method and the CQC(complete quadratic combination) method.The difference between the SRSS method and the CQC method was discussed with a practical example,and the results of frequency domain analysis were verified by the time domain method.The results showed that the SRSS method could be used to calculate the wind vibration coefficient of guyed masts with consideration of the contribution of only the first five modes.The influence of the angle wind,the initial stress of the cable and the rigidity ratio of the top and bottom cables on wind vibration coefficient of guyed masts could be ignored.
The calculation method of wind vibration coefficient of guyed masts was studied,and the expressions of wind vibration coefficient of guyed masts were given respectively based on the SRSS(square sum and square root) method and the CQC(complete quadratic combination) method.The difference between the SRSS method and the CQC method was discussed with a practical example,and the results of frequency domain analysis were verified by the time domain method.The results showed that the SRSS method could be used to calculate the wind vibration coefficient of guyed masts with consideration of the contribution of only the first five modes.The influence of the angle wind,the initial stress of the cable and the rigidity ratio of the top and bottom cables on wind vibration coefficient of guyed masts could be ignored.
引文
[1]王肇民.桅杆结构[M].北京:科学出版社,2001Wang Zhaomin.Guyed mast structure[M].Beijing:Science Press,2001
[2]王肇民,程勇凌.桅杆结构动力特性研究[J].建筑结构学报,1993,14(5):2-10Wang Zhaomin,Cheng Yongling.Research on dynamic characteristics of guyed mast structure[J].Journal of Building Structures,1993,14(5):2-10
[3]蒋涛,马星。王肇民.桅杆结构风振系数的计算方法[J].特种结构,1998,15(3):51-55Jiang Tao,Ma Xing,Wang Zhaomin.Calculation method of wind-vibration coefficient of guyed masts[J].Special Structure,1998,15(3):51-55
[4]Materazzi A L,Venanzi I.A simplified approach for the wind response analysis of cable-stayed masts[J].Journal of Wind Engineering and Industrial Aerodynamics,2007,95:1272-1288
[5]GB 50135-2006高耸结构设计规范[S].北京:中国计划出版社,2007GB 50135-2006.Code for Design of High-rising Structures[S].Beijing:China Planning Press,2007
[6]GB 50009-2012建筑结构荷载规范[S].北京:中国建筑工业出版社,2012GB 50009-2012.Load Code for the Design of Building Structures[S].Beijing:China Architecture&Building Press,2012
[7]邓洪洲,徐海江,马星.桅杆结构风振系数研究[J].振动与冲击,2006,35(22):48-53Deng Hongzhou,Xu Haijiang,Ma Xing Research on wind-vibration coefficient of guyed masts[J].Journal of Vibration and Shock,2006,35(22):48-53
[8]R.克拉夫,J.彭津.结构动力学[M].第2版.北京:高等教育出版社,2006Clough R W.,Penzien J.Dynamics of structures(the second edition)[M].Beijing;Higher Education Press,2006
[9]史国富.桅杆结构风振系数研究[D].上海:同济大学,2001Shi Guofu.Research on wind vibration coefficient of guyed masts[D].Shanghai:Tongji University,2001
[10]庞金来.桅杆结构顺风向风振系数数值研究[D].上海:同济大学,2015Pang Jinlai.Numerical analysis on along wind vibration coefficient of guyed masts[D].Shanghai;Tongji University,2015
[2]王肇民,程勇凌.桅杆结构动力特性研究[J].建筑结构学报,1993,14(5):2-10Wang Zhaomin,Cheng Yongling.Research on dynamic characteristics of guyed mast structure[J].Journal of Building Structures,1993,14(5):2-10
[3]蒋涛,马星。王肇民.桅杆结构风振系数的计算方法[J].特种结构,1998,15(3):51-55Jiang Tao,Ma Xing,Wang Zhaomin.Calculation method of wind-vibration coefficient of guyed masts[J].Special Structure,1998,15(3):51-55
[4]Materazzi A L,Venanzi I.A simplified approach for the wind response analysis of cable-stayed masts[J].Journal of Wind Engineering and Industrial Aerodynamics,2007,95:1272-1288
[5]GB 50135-2006高耸结构设计规范[S].北京:中国计划出版社,2007GB 50135-2006.Code for Design of High-rising Structures[S].Beijing:China Planning Press,2007
[6]GB 50009-2012建筑结构荷载规范[S].北京:中国建筑工业出版社,2012GB 50009-2012.Load Code for the Design of Building Structures[S].Beijing:China Architecture&Building Press,2012
[7]邓洪洲,徐海江,马星.桅杆结构风振系数研究[J].振动与冲击,2006,35(22):48-53Deng Hongzhou,Xu Haijiang,Ma Xing Research on wind-vibration coefficient of guyed masts[J].Journal of Vibration and Shock,2006,35(22):48-53
[8]R.克拉夫,J.彭津.结构动力学[M].第2版.北京:高等教育出版社,2006Clough R W.,Penzien J.Dynamics of structures(the second edition)[M].Beijing;Higher Education Press,2006
[9]史国富.桅杆结构风振系数研究[D].上海:同济大学,2001Shi Guofu.Research on wind vibration coefficient of guyed masts[D].Shanghai:Tongji University,2001
[10]庞金来.桅杆结构顺风向风振系数数值研究[D].上海:同济大学,2015Pang Jinlai.Numerical analysis on along wind vibration coefficient of guyed masts[D].Shanghai;Tongji University,2015