Title :
Frequency Veering Analysis of Cable-Girder System for Cable-Stayed Bridges
Author :
Chen Weizhen ; Zhao Yang ; Liu Xue
Author_Institution :
Tongji Univ., Shanghai, China
Abstract :
Analytic characteristic values of the simplified model were solved for cable-girder system. The characteristic vectors were derived. The system frequencies and modes were obtained which were simplified with non-dimensional method. The frequency veering of cable-girder system was analyzed with Maple numerical analysis software. The results show that there exist frequency veering and mode conversion among cable-girder modes under special parameter combination. Some slight changes of mechanical parameters cause fast conversion among cable-girder modes. Hybrid modes appear in the center of frequency veering area. Mode localization factor can be used to predict whether hybrid modes occur in cable-girder system effectively.
Keywords :
beams (structures); bridges (structures); cables (mechanical); numerical analysis; structural engineering; supports; vibrations; Maple numerical analysis software; cable-girder modes; cable-girder system; cable-stayed bridges; characteristic vectors; coupled vibration; frequency veering analysis; hybrid modes; mechanical parameters; mode conversion; mode localization factor; Bridges; Differential equations; Educational institutions; Eigenvalues and eigenfunctions; Numerical models; Structural beams; Vibrations; Cable-Girder System; Cable-Stayed Bridge; Frequency Veering; Localization Factor;
Conference_Titel :
Intelligent Computation Technology and Automation (ICICTA), 2014 7th International Conference on
Conference_Location :
Changsha
Print_ISBN :
978-1-4799-6635-6
DOI :
10.1109/ICICTA.2014.229
