大跨度桥梁非线性空气静力和动力行为研究  

Nonlinear Aerostatic and Aerodynamic Analysis of Long-span Bridge

作　　者：张新军[1] 孟松兔[1] 陈艾荣[2] 项海帆[2] 

机构地区：[1]浙江工业大学建筑工程学院,浙江杭州310032 [2]同济大学桥梁系,上海200092

出　　处：《桥梁建设》2001年第6期4-7,共4页Bridge Construction

基　　金：国家自然科学基金重大项目资助 ( 5 9895 410 4.2 )

摘　　要：随着桥梁跨径的增大 ,由于空气力作用产生的大变形将对大跨度桥梁的空气静力和动力行为 (颤振 )产生不容忽视的非线性效应。考虑结构变形对作用于结构上的空气静力和动力的非线性影响 ,提出了基于变形后状态的空气静力和颤振的非线性分析方法 ,并编制了计算程序。最后 ,结合江阴长江大桥进行了分析和研究 ,揭示了非线性因素对大跨度悬索桥空气静力和颤振行为的影响机理和规律。With the increase of span length, the nonlinear effect on the aerostatic and aerodynamic behavior(flutter) of long span bridge due to the significant deformation caused by static wind force is becoming an unnegligible factor. It gives an approach of the nonlinear aerostatic and flutter analysis based on deformed status of long-span bridge considering the nonlinear effect mentioned above, and the corresponding computing program is made. Finally, nonlinear aerostatic and flutter analysis are performed to Jiangyin Changjiang River Bridge, the influence mechanism and rule of nonlinearities in aerostatic and flutter analysis of long span suspension bridge is disclosed.

关 键 词：长跨桥 悬索桥 非线性 空气静力 颤振 有限元法 结构分析 结构变形 

分 类 号：U448.25[建筑科学—桥梁与隧道工程] U441[交通运输工程—道路与铁道工程]