Research for Cable-Girder Coupled Vibration of a Cable-Stayed Bridge Based on Finite Element Analysis

Author

Chen Weizhen ; Zhao Yang ; Zheng Yong

Author_Institution

Tongji Univ., Shanghai, China

fYear

2014

fDate

25-26 Oct. 2014

Firstpage

968

Lastpage

971

Abstract

Cable-girder coupled vibration of cable-stayed bridge is analyzed by finite element method. Sutong Bridge is used as an example. Cable is simulated with one element cable system (OECS) and multiple element cable system (MECS). OECS model and MECS model are built for Sutong Bridge respectively. Global modes of the bridge are gained with OECS model. Local modes of cables and coupled modes of cable-girder are obtained by MECS model additionally. Therefore, the coupled vibration phenomenon is presented. Analysis results show that the coupled vibration will occur when the frequency ratio of local cable frequency to global bridge frequency is close to 1:1 and the cable vibration amplitude will be much larger. Therefore, the cable-girder frequency ratio should not design to be 1:1 to avoid the cable-girder coupled vibration in the design of a cable-stayed bridge.

Keywords

beams (structures); bridges (structures); cables (mechanical); finite element analysis; structural engineering; vibrations; MECS model; OECS model; Sutong bridge; cable-girder coupled vibration; cable-stayed bridge; finite element analysis; multiple element cable system; one element cable system; Bridges; Finite element analysis; Force; Numerical models; Poles and towers; Structural beams; Vibrations; Cable-Stayed Bridge; Coupled Vibration; Finite Element Method; Frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Computation Technology and Automation (ICICTA), 2014 7th International Conference on

Conference_Location

Changsha

Print_ISBN

978-1-4799-6635-6

Type

conf

DOI

10.1109/ICICTA.2014.233

Filename

7003696