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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2005, Vol. 6 Issue ( 3): 4-    DOI: 10.1631/jzus.2005.A0175
    
Aerodynamic stability of cable-stayed bridges under erection
ZHANG Xin-jun, SUN Bing-nan, XIANG Hai-fan
School of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, China; School of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China; Department of Bridge Engineering, Tongji University, Shanghai 200092, China
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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 Civil Engineering and Architecture Bridge     
Received: 18 April 2004     
CLC:  U448.25  
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ZHANG Xin-jun
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ZHANG Xin-jun, SUN Bing-nan, XIANG Hai-fan. Aerodynamic stability of cable-stayed bridges under erection. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2005, 6( 3): 4-.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2005.A0175     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2005/V6/I 3/4

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