会议专题

AEROSTATIC AND AERODYNAMIC STABILITY ANALYSIS OF SUPER LONG-SPAN CABLE-STAYED BRIDGE UNDER CONSTRUCTION

By Taking the worlds longest cable-stayed bridge- the Sutong Bridge over the Yangtze River as example,through simulating the actual construction sequence,the evolutions of aerostatic and aerodynamic stability of the bridge during the whole construction period are investigated numerically by 3D nonlinear aerostatic and aerodynamic analysis. The results show that: with the progress of construction,the critical wind speed of aerostatic instability decreases monotonously,and the worst aerostatic stability is encountered at the maximum single cantilever stage; the critical flutter wind speed also decreases monotonously,and the worst aerodynamic stability is encountered at the bridge in completion. The completion of side spans,the remove of temporary piers from the side spans,the completion of main span and remove of the temporary fixation between the deck and pylons all have important effects on the aerostatic and aerodynamic stability of the bridge under construction.

Super long-span cable-stayed bridges Construction process Aerostatic stability Aerodynamic stability

Xin-Jun Zhang Wei-Long Xu

College of Civil Engineering Architecture,Zhejiang University of Technology,Hangzhou 310014,P.R.China

国际会议

The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

广州

英文

1489-1493

2010-12-01(万方平台首次上网日期,不代表论文的发表时间)