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Journal of Zhejiang University-SCIENCE A

, Volume 6, Issue 3, pp 175–180 | Cite as

Aerodynamic stability of cable-stayed bridges under erection

  • Zhang Xin-jun
  • Sun Bing-nan
  • Xiang Hai-fan
Article
  • 106 Downloads

Abstract

In this work, nonlinear multimode aerodynamic analysis of the Jingsha Bridge under erection over the Yangtze River is conducted, and the evolutions of structural dynamic characteristics and the aerodynamic stability with erection are numerically generated. Instead of the simplified method, nonlinear multimode aerodynamic analysis is suggested to predict the aerodynamic stability of cable-stayed bridges under erection. The analysis showed that the aerodynamic stability maximizes at the relatively early stages, and decreases as the erection proceeds. The removal of the temporary piers in side spans and linking of the main girder to the anchor piers have important influence on the dynamic characteristics and aerodynamic stability of cable-stayed bridges under erection.

Key words

Cable-stayed bridge Erection stage Aerodynamic stability Nonlinear multimode aerodynamic analysis 

Documbent code

CLC number

U448.25 

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Copyright information

© Zhejiang University Press 2005

Authors and Affiliations

  1. 1.School of Civil Engineering and ArchitectureZhejiang University of TechnologyHangzhouChina
  2. 2.School of Civil Engineering and ArchitectureZhejlang UniversityHangzhouChina
  3. 3.Department of Bridge EngineeringTongji UniversityShanghaiChina

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