考虑抖振影响的大跨度桥梁静风稳定性分析  

AEROSTATIC INSTABILITY ANALYSIS OF LONG SPAN BRIDGES INCLUDING BUFFETING EFFECT

作　　者：张志田[1] 葛耀君[2] 

机构地区：[1]湖南大学风工程试验研究中心,长沙410082 [2]同济大学桥梁工程系,上海200092

出　　处：《工程力学》2006年第8期96-101,共6页Engineering Mechanics

基　　金：国家自然科学基金资助项目(50278069)

摘　　要：提出大跨度桥梁静风稳定性求解的动力有限元方法,在考虑桥梁结构几何非线性与脉动风抖振响应影响的基础上对西堠门大桥与东海大桥的静风稳定性进行了分析,计算结果表明,忽略脉动风抖振影响求出的静风失稳临界风速是偏于保守的。Put forward a method which assesses the aerostatic instability of long span bridges by the approach of dynamic finite element analysis. The aerostatic instability of XIHOUMEN suspension bridge and east coast sea cable-stayed bridge which include the effects of geometric nonlinearity and buffeting are investigated. The analytical data shows that neglecting buffeting influence lead to conservative result.

关 键 词：桥梁 静风稳定 动力有限元 几何非线性 抖振 大跨度 

分 类 号：TU311.3[建筑科学—结构工程]