Wind-induced nonlinear behaviors of twin-box girder bridges with various aerodynamic shapes
Wind-induced nonlinear behaviors of twin-box girder bridges with various aerodynamic shapes
复制标题
不同气动形状双箱梁桥的风致非线性行为
DOI：
10.1007/s11071-018-4411-y
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发表时间：
2018-06
影响因子：
5.6
通讯作者：
Zhang Lihai
中科院分区：
文献类型：
--
作者：
Zhou Rui;Ge Yaojun;Yang Yongxin;Du Yanliang;Zhang Lihai
双箱梁桥的风致非线性振动对桥面的气动形状非常敏感（即，槽宽比（SWR）和风整流罩形状）。本文提出了一个完全集成的时域有限元模型，包括一个非线性气动力模型和桥梁有限元模型，允许调查的非线性振动行为的大跨度双箱梁桥与不同的SWR和风整流罩的形状。首先通过CFD仿真对模型参数进行辨识，然后通过节段模型和全桥气弹模型进行风洞试验验证。结果表明，所建立的集成模型具有模拟不同气动外形双箱梁非线性颤振行为的能力。预测结果表明，整流罩形状对桥梁耦合振动和失效模态的自由度参与度以及颤振性能有显著影响。此外，随着双箱梁桥驻波比的增大，极限环振动幅值也随之增大，反对称和对称挡风板的弯扭耦合振动、破坏模式和驻波比之间的关系相反。
Wind-induced nonlinear oscillations of twin-box girder bridges are very sensitive to the aerodynamic shape of the deck (i.e., slot width ratio (SWR) and wind fairing shape) due to the complicated flow characteristics around the bridge deck. This paper presents a fully integrated finite element (FE) model in time domain, involving a nonlinear aerodynamic force model and a bridge FE model, to allow the investigation of nonlinear oscillation behaviors of long-span twin-box girder bridges with various SWRs and wind fairing shapes. The parameters in integrated FE model were firstly identified by using CFD simulation, and then, the proposed model was validated by conducting wind tunnel testing using sectional models and full-bridge aeroelastic models. It demonstrates that the developed integrated model has the capability of simulating the nonlinear flutter behaviors of twin-box girder bridges with various aerodynamic shapes. Furthermore, the prediction results show that the wind fairing shape has significant impact on the degree of freedom participation in coupled oscillation and failure modes, as well as flutter performance of the bridges. In addition, there is an increase in amplitudes of the limit cycle oscillations with the increase in the SWR of the twin-box girder bridges, and the relationships between the bending-torsional coupled oscillation, failure modes, and SWR of the bridges with anti-symmetric wind fairings are opposite to those with symmetric wind fairings.
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影响因子：
5.5
作者：
S. Miranda;L. Patruno;M. Ricci;F. Ubertini
通讯作者：
S. Miranda;L. Patruno;M. Ricci;F. Ubertini
DOI：
10.1061/(asce)0733-9399(2000)126:1(7
发表时间：
1999
期刊：
Journal of Engineering Mechanics-asce
影响因子：
--
作者：
Xinzhong Chen;M. Matsumoto;A. Kareem
通讯作者：
Xinzhong Chen;M. Matsumoto;A. Kareem
影响因子：
0.8
作者：
Hiroshi Sato;N. Hirahara;K. Fumoto;S. Hirano;S. Kusuhara
通讯作者：
Hiroshi Sato;N. Hirahara;K. Fumoto;S. Hirano;S. Kusuhara
DOI：
10.1016/s0167-6105(02)00351-3
发表时间：
2001-10
影响因子：
4.8
作者：
Shuji Shirai;T. Ueda
通讯作者：
Shuji Shirai;T. Ueda
DOI：
10.1016/j.jweia.2007.06.045
发表时间：
2008-06
影响因子：
4.8
作者：
Y. Ge;H. Xiang
通讯作者：
Y. Ge;H. Xiang