摘要
运用多模态颤振有限元分析方法 ,分别从悬索的矢跨比、吊跨比、斜拉索索面布置形式、边跨辅助墩的设置以及桥面主梁构成等设计参数着手 ,对主跨 14 0 0m的斜拉 -悬吊协作体系桥进行了颤振稳定性分析 ,指出了影响斜拉 -悬吊协作体系桥颤振稳定性的关键设计参数 ,并从抗风性能角度探讨了斜拉 -悬吊协作体系桥的合理结构型式。
Applying a finite element-based method for multi-mode flutter analysis,parametric analyses on the flutter stability of a cable-stayed-suspension hybrid bridge with a main span of 1400 m are conducted,with the parameters including:the sag to span and suspension to span ratios,the cable surface layout, the arrangements of the auxillary piers in the side spans and the different composition of main deck girders etc.The key design parameters,influencing the flutter stability of cable-stayed-suspension hybrid bridges,are pointed out, and based on the wind-resistant stability,the favorable structural system of cable-stayed-suspension hybrid bridges is also discussed.
出处
《土木工程学报》
EI
CSCD
北大核心
2004年第7期106-110,共5页
China Civil Engineering Journal
基金
浙江省自然科学基金资助项目 (50 2 1 1 8)
关键词
斜拉-悬吊协作体系桥
颤振稳定性
多模态颤振
有限元分析
cable-stayed-suspension hybrid bridge
flutter stability
finite element-based multi-mode flutter analysis
