结构工程师2012，Vol.28Issue(1)：87-93,7.
大跨径三塔双主跨斜拉桥非线性风致静力失稳分析
Nonlinear Wind-Induced Static Instability Analysis for Long-Span Cable-Stayed Bridges with Three Towers and Two Main Spans
摘要
Abstract
Wind-induced static instability of long-span bridges cannot be ignored. The wind-induced static stability of a bridge under construction in China, which will be the longest cable-stayed bridge with three towers and two main spans in the world, deserves attention. On the basis of nonlinear wind-induced static instability theory of long-span bridges, and taking both load and geometric nonlinearity into consideration, its wind-induced static stability was analyzed by the improved incremental double iteration method . The special instability configuration of the bridge was described, with the effect and mechanism of cables, towers and auxiliary piers on the wind-induced static stability discussed. The mechanism of wind-induced static instability was also analyzed from the perspective of relation between wind load and structural rigidity.关键词
大跨径桥梁/三塔双主跨/风致静力失稳/非线性Key words
long-span bridge/three towers and two main spans/wind-induced static instability/nonlinearity引用本文复制引用
李渊,杨詠昕,郭增伟,马婷婷..大跨径三塔双主跨斜拉桥非线性风致静力失稳分析[J].结构工程师,2012,28(1):87-93,7.基金项目
国家自然科学基金资助项目(51078276) （51078276）
交通行业重点实验室自主课题(KLWRBMT-04) （KLWRBMT-04）
国家重点实验室自主课题(SLDRCE 10-B-05):联合资助 （SLDRCE 10-B-05）
