摘要
以一座异形钢结构人行桥为工程背景,探究了一种简洁有效的主梁模拟方法。给出了建立异形斜拉桥动力有限元模型的完整步骤;利用环境振动试验测试的模态结果,验证了所建模型的准确性和建模方法的有效性;运用有限元模型修正技术,对模型参数进行了分析和优化。结果表明该模型能较真实地反映实桥的动力特性,建模方法有很好的工程应用价值。
Based on a special-shaped steel pedestrian b r i d g e, the finite m o d e l s of girder w e r e discussed. A concise and effective model of the special-shaped cable-stayed bridge w a s established a n d the procedure of finite ele m e n t m o d e l i n g was presented. The effectiveness of the finite el e m e n t m o d e l of the bridge w a s verified b y a n a m b i e n t vibration test. B y use of the finite element model updating method, parameters of the finite e l e m e n t m o d e l w e r e analyzed a n d optimized. Result shows that the finite element model c a n reflect the bridge in d y n a m i c characteristics accurately. T h e m o d e l i n g m e t h o d is useful in bridge engineering application.
作者
李志刚
阳霞
任伟新
LI Zhigang YANG Xia REN Weixin(CCCC Second Highway Consultants Co. Ltd. , Wuhan 430058, China School of Civil Engineering, Hefei University of Technology, Hefei 230009, China)
出处
《振动与冲击》
EI
CSCD
北大核心
2017年第12期55-60,共6页
Journal of Vibration and Shock
基金
国家青年科学基金项目(51308175)
关键词
异形斜拉桥
有限元模型
环境振动试验
有限元模型修正
special-shaped cable-stayed b r i d g e
finite e l e m e n t m o d e l
a m b i e n t vibration test
finite e l e m e n t m o d e l updating
作者简介
李志刚男,硕士,工程师,1984年生
通信作者 阳霞 女,博士生,1986年生 E-mail：yangx@mail.hfut.edu.cn
