Investigation on flutter mechanism of long-span bridges with 2d-3DOF method
Investigation on flutter mechanism of long-span bridges with 2d-3DOF method
复制标题
大跨桥梁颤振机理的2d-3DOF研究
DOI：
10.12989/was.2007.10.5.421
复制
发表时间：
2007-10
影响因子：
1.6
通讯作者：
Ge, Yaojun
中科院分区：
文献类型：
--
作者：
Yang, Yongxin;Xiang, Haifan;Ge, Yaojun
为了同时研究颤振参数与三自由度气动导数之间的关系，阐明颤振失稳中不同自由度的耦合效应，提出了一种二维颤振分析方法(2 D-3 DOF法)。利用该方法对两种典型桥面段--箱梁段和两隔震梁段的颤振机理进行了数值研究，总结了这两种典型颤振现象的异同。然后，通过气动稳定性试验研究和稳定机理的理论分析，研究了中央开槽对大跨度箱梁桥的颤振抑制效果及其机理。最后对通过中心风口宽度评价临界风速趋势的新发现提出了可能的解释。
A two-dimensional flutter analysis method (2d-3DOF method) was developed to simultaneously investigate the relationship between oscillation parameters and aerodynamic derivatives of three degrees of freedom, and to clarify the coupling effects of different degrees of freedom in flutter instability. With this method, the flutter mechanism of two typical bridge deck sections, box girder section and two-isolated-girder section, were numerically investigated, and both differences and common ground in these two typical flutter phenomena are summarized. Then the flutter stabilization effect and its mechanism for long-span bridges with box girders by using central-slotting were studied by experimental investigation of aerodynamic stability and theoretical analysis of stabilizing mechanism. Possible explanation of new findings in the evaluation trend of critical wind speed through central vent width is finally presented.
登录
查看更多内容
影响因子：
1.6
作者：
M. Como;S. Ferraro;A. Grimaldi
通讯作者：
M. Como;S. Ferraro;A. Grimaldi
DOI：
10.1016/0167-6105(93)90141-a
发表时间：
1993-10
影响因子：
4.8
作者：
A. Larsen
通讯作者：
A. Larsen
影响因子：
1.6
作者：
X. Hua;Z. Q. Chen;Y. Ni;J. Ko
通讯作者：
X. Hua;Z. Q. Chen;Y. Ni;J. Ko
影响因子：
2.2
作者：
Q. Ding;Airong Chen;H. Xiang
通讯作者：
Q. Ding;Airong Chen;H. Xiang