铁道科学与工程学报Issue(5)：5-11,7.
大跨径悬索桥施工阶段颤振稳定性影响因素研究
Research on flutter stability of a long-span suspension bridge during erection
摘要
Abstract
The characteristics of flutter stability during construction are influenced by many factors such as the sequence of deck erection.In this paper,numerical flutter stability analyses were performed for the construction process of the Zhongdu Bridge over Yangtze River with ANSYS FE model based on physical coordinates method. Therein,the effect of structural damping,the initial wind attack angle,and the sequence of deck erection were discussed in detail.It is found that the non-symmetrical sequence deck erection is aerodynamically favourable for the deck erection for long-span suspension bridges.As for the initial wind attack angle,it is beneficial to flutter stability with -3°,while unfavorable with +3°.Meanwhile,structural damping has a great impact on flutter stability,particularly obvious during the early construction stage.This analysis method with ANSYS could afford reference to bridge designers.关键词
大跨径悬索桥/颤振稳定性/施工阶段/ANSYS模型Key words
long-span suspension bridge/flutter stability/construction phase/ANSYS model分类
交通工程引用本文复制引用
李春光,刘书倩,韩艳,蔡春声..大跨径悬索桥施工阶段颤振稳定性影响因素研究[J].铁道科学与工程学报,2014,(5):5-11,7.基金项目
同济大学土木工程防灾国家重点实验室开发基金资助项目（KLWRTBMC）；国家自然科学基金资助项目（51278069，51208067）；湖南省教育厅优秀青年项目资助（12B009）；铁四院科研项目资助 （）
