INVESTIGATION ON THE WIND STABILITY OF A THREE-TOWER SUSPENSION BRIDGE DURING DECK ERECTION

摘要：

Taking the first three-tower suspension bridge in the world with two main spans over 1000 m-the Taizhou Highway Bridge over the Yangtze River as example,under the construction sequences of the deck erected symmetrically from the midspan to the pylons,from the pylons to midspan and simultaneously from the pylons and midspan toward the quarter points of main spans respectively,numerical investigation on structural aerostatic and aerodynamic stability during deck erection is conducted by 3D nonlinear aerostatic and aerodynamic analysis,and the favorable deck erection sequence is discussed with respect to the wind stability. The results show that the best wind stability is achieved as the deck is erected as the construction sequence of pylons to midspans,which is confirmed analytically to be favorable for threetower suspension bridges.

关键词： Three-tower suspension bridge Deck erection sequence Aerostatic stability Aerodynamic stability

作者: Xin-Jun Zhang li-Bing Wu

作者单位: College of Civil Engineering Architecture,Zhejiang University of Technology,Hangzhou 310014,P.R.China

会议类型: 国际会议

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

会议地点: 广州

会议语种:英文

页码: 1483-1488

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）