重庆大学学报：自然科学版2012，Vol.35Issue(10)：51-56,6.
大跨度中承式拱桥静风稳定性分析
Aerostatic stability analysis of long span half-through arch bridges
摘要
Abstract
AThe main arch of a long-span arch bridge is a compression member. The static wind loads on the bridge not only causes changes of dynamic characters, but also leads the structure to collapse or buckling. Especially, when the arch bridge has longer span and less lateral braces, its stability is much different from the long span cable-stayed bridges and suspension bridges. This paper takes Chongqing Caiyuanba Yangzi River Bridge as a typical example and conducted the wind section tunnel tests. The displacement response of the bridge is obtained and its yield and static stability mechanism under static wind is analyzed. The results show that those factors, such as initial attack angle of the static wind, material yield strength and the static forces coefficients, have great effects on the aer0statics stability of a long span half-through arch bridge.关键词
中承式拱桥/静风稳定/静风荷载/失稳机理Key words
half-through arch bridge/aerostatics stability/static wind loads/instability mechanism分类
建筑与水利引用本文复制引用
熊辉,晏致涛,李正英,邓暖..大跨度中承式拱桥静风稳定性分析[J].重庆大学学报：自然科学版,2012,35(10):51-56,6.基金项目
中央高校基本科研费资助项目 （）
重庆市建设科技计划项目（城科字2011第（288）号） （）
