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.
出处
《公路交通科技》
CAS
CSCD
北大核心
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)
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
Long-span suspension bridge
Flutter stability
Design parameters
Three-dimensional nonlinear flutter analysis
