Simplified algorithm for the fundamental frequency of asymmetric single-tower suspension bridges based on Rayleigh method

doi:10.13465/j.cnki.jvs.2020.02.033

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Simplified algorithm for the fundamental frequency of asymmetric single-tower suspension bridges based on Rayleigh method
	Yang, Guojun 1,2; Tang, Guangwu 1; Du, Yongfeng 2; Hao, Xianwu 3; Li, Ziqing 3
刊名	Zhendong yu Chongji/Journal of Vibration and Shock
	2020-01-28
卷号	39 期号:2 页码:234-242
关键词	Elastic waves Machine vibrations Natural frequencies Railroad bridges Suspension bridges Towers Bridge engineering Free vibration Fundamental frequencies Rayleigh method Single tower
ISSN号	10003835
DOI	10.13465/j.cnki.jvs.2020.02.033
英文摘要	In order to calculate the vibration frequencies of an asymmetric single-tower suspension bridge rapidly, frequency formulas for 1st vertical and torsional vibration modes were derived based on the Rayleigh method considering the influence of asymmetric span, and the reasonable span ratio of the asymmetric single-tower suspension bridge was put forward. The estimation of the fundamental frequency of the single-tower suspension bridge with symmetric double-span could also be obtained by taking the value of some related parameter to be 1 in the calculation formula for the asymmetric side-tower suspension bridge. The validity and reliablity of the proposed formulas were verified by the finite element method (FEM). The results show that the errors of both the 1st anti-symmetric and the 1st symmetric vertical and torsional vibration frequencies calculated by the proposed method are less than 10%, as compared with the FEM results, which can meet the design requirement. The influence of the span correlation coefficient on the fundamental frequency was discussed and the reasonable side-middle span ratio was suggested. The results indicate that the proposed simplified method can be applied to guide the scheme design and dynamic calculation of single-tower suspension bridges. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved.
语种	中文
出版者	Chinese Vibration Engineering Society
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/151064]
专题	土木工程学院
作者单位	1.State Key Laboratory of Bridge Engineering Structural Dynamic, China Merchants Chongqing Communications Technology Research & Design Institute Co., Ltd., Chongqing; 400067, China; 2.International Research Base on Seismic Mitigation and Isolation of Gansu Province, Lanzhou University of Technology, Lanzhou; 730050, China; 3.School of Highway, Chang'an University, Xi'an; 710064, China
推荐引用方式 GB/T 7714	Yang, Guojun,Tang, Guangwu,Du, Yongfeng,et al. Simplified algorithm for the fundamental frequency of asymmetric single-tower suspension bridges based on Rayleigh method[J]. Zhendong yu Chongji/Journal of Vibration and Shock,2020,39(2):234-242.
APA	Yang, Guojun,Tang, Guangwu,Du, Yongfeng,Hao, Xianwu,&Li, Ziqing.(2020).Simplified algorithm for the fundamental frequency of asymmetric single-tower suspension bridges based on Rayleigh method.Zhendong yu Chongji/Journal of Vibration and Shock,39(2),234-242.
MLA	Yang, Guojun,et al."Simplified algorithm for the fundamental frequency of asymmetric single-tower suspension bridges based on Rayleigh method".Zhendong yu Chongji/Journal of Vibration and Shock 39.2(2020):234-242.