• ISSN 0258-2724
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Volume 27 Issue 2
Apr.  2014
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Journal of Southwest Jiaotong University  > 2014  >  27(2): 202-207.
HUANG Bin, LI Yejun, ZHU Liping, ZHANG Weidong. Effects of Towers Random Sectional Bending Stiffness on Dynamic Characteristics of Large-Span Cable-Stayed Bridge[J]. Journal of Southwest Jiaotong University, 2014, 27(2): 202-207. doi: 10.3969/j.issn.0258-2724.2014.02.003
Citation: HUANG Bin, LI Yejun, ZHU Liping, ZHANG Weidong. Effects of Towers Random Sectional Bending Stiffness on Dynamic Characteristics of Large-Span Cable-Stayed Bridge[J]. Journal of Southwest Jiaotong University, 2014, 27(2): 202-207. doi: 10.3969/j.issn.0258-2724.2014.02.003
shu

Effects of Towers Random Sectional Bending Stiffness on Dynamic Characteristics of Large-Span Cable-Stayed Bridge

doi: 10.3969/j.issn.0258-2724.2014.02.003
  • Received Date: 30 Jun 2013
  • Publish Date: 25 Mar 2014
    Abstract
  • In order to investigate the dynamic characteristics of large span cable-stayed bridges with uncertain structural parameters, the plane FEM model of Edong Yangtze River bridge was established. In view of the randomness of sectional bending stiffness of the towers, the mean and standard deviation of the natural frequencies and vibration modes of the cable-stayed bridge were analyzed using recursive stochastic finite element method. Based on the calculated random dynamic parameters of this bridge, the effects of randomness of the towers' sectional bending stiffness on dynamic characteristics of large span cable-stayed bridge were discussed. The results show that when the variation coefficient of bending stiffness reaches 0.3, the randomness of the bending stiffness has great influence on the 18th, 19th, 29th, 34th, 37th, and 43th order in-plane natural frequencies and vibration modes of Edong Yangtze River bridge.

     

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