大跨度悬索桥的颤振稳定性研究  

Study on Flutter Stability of Long.span Suspension Bridges

作　　者：张新军[1] 孙炳楠[2] 

机构地区：[1]浙江工业大学建筑工程学院,浙江杭州310032 [2]浙江大学建筑工程学院,浙江杭州310027

出　　处：《公路交通科技》2004年第8期34-37,共4页Journal of Highway and Transportation Research and Development

基　　金：浙江省自然科学基金资助项目(502118)

摘　　要：颤振稳定性是大跨度悬索桥设计中倍受关注的重要问题。运用大跨度桥梁的三维非线性颤振分析方法,以润扬长江大桥为背景,对影响悬索桥颤振稳定性的一些设计参数如桥跨布置、矢跨比、边主跨比、加劲梁的高度、恒载集度及其支承体系等进行了分析,指出了影响大跨度悬索桥颤振稳定性的主要设计参数,并探讨了具有良好抗风性能的大跨度悬索桥合理结构体系。Flutter stability is one of major concerns in the design of long-span suspension bridges. Using the method of three-dimensional nonlinear flutter analysis, numerical flutter analyses of the Runyang bridge over the Yangtze River are carried out including the arrangement of bridge spans, the cable sag to main span ratio, the side span to main span ratio, the height, dead load and supporting system of the stiffening girder. Main design parameters that affect the flutter stability of long-span suspension bridges are pointed out, and the reasonable structural system of long-span suspension bridges is also discussed.

关 键 词：大跨度悬索桥 颠振稳定性 设计参数 三维非线性颠振分析 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]