A theoretical study on the train-induced vibrations of a semi-active magneto-rheological steel-spring floating slab track
A theoretical study on the train-induced vibrations of a semi-active magneto-rheological steel-spring floating slab track
复制标题
半主动磁流变钢弹簧浮置板轨道列车诱发振动的理论研究
DOI：
10.1016/j.conbuildmat.2019.01.210
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发表时间：
2019-04
影响因子：
7.4
通讯作者：
Wang Ping
中科院分区：
文献类型：
--
作者：
Wei Kai;Zhao Zeming;Du Xianggang;Li Huailong;Wang Ping
为了进一步提高钢弹簧浮置板轨道的减振效果，特别是在钢弹簧浮置板轨道的固有频率下，将半主动磁流变阻尼器应用于传统钢弹簧浮置板轨道的浮置板支承。在试验研究的基础上，基于提出的磁流变阻尼器半主动控制理论模型，建立了垂向车辆-磁流变钢-弹簧FST耦合动力学模型。利用该动力学模型进行安全性分析和减振评价，从理论上验证了半主动磁流变钢弹簧FST的可行性。结果表明，在传统的钢弹簧浮置板结构中引入半主动磁流变阻尼器支承浮置板，不会对地铁车辆在浮置板结构上运行的安全性产生影响。采用半主动控制策略的磁流变阻尼器不仅可以有效地提高钢弹簧框架结构在基频处的减振效果，而且可以有效地抑制钢弹簧框架结构基频以上浮置板下的振动放大效应。在半主动磁流变钢弹簧阻尼器中，最大磁流变阻尼力和位移阈值是两个关键参数。在浮置板的固有频率以上，较大的MR阻尼力会降低浮置板的负向抑振效果，而较高的位移阈值会降低浮置板支承力的消振速度。
In order to further improve the vibration-reduction effect of a steel-spring floating slab track (FST), especially at the inherent frequency of a steel-spring FST, semi-active magneto-rheological (MR) dampers were applied to support a floating slab in a traditional steel-spring FST. Based on the experimental study and the proposed theoretical model of the MR dampers with a simple semi-active control method, a vertical vehicle-magneto-rheological steel-spring FST coupled dynamic model was established. The proposed dynamic model was used for a safety analysis and a vibration-reduction evaluation to theoretically validate the feasibility of semi-active magneto-rheological steel-spring FST. It was concluded that the introduction of semi-active MR dampers to support a floating slab in a traditional steel-spring FST has no impact on the security of subway vehicles running on FST. MR dampers with a semi-active control strategy can effectively not only improve the vibration-reduction effect at the basic frequency of a steel-spring FST, but also they can also suppress the vibration-amplification negative effect under a floating slab above the basic frequency of a steel-spring FST. There are the two key parameters of the maximum MR damping force and the displacement threshold in a semi-active magneto-rheological steel-spring FST. The larger MR damping force can deteriorate the negative vibration-suppression effect under a floating slab above the inherent frequency of the FST, while the higher displacement threshold can decrease the vibration-attenuation velocity of the FST supporting force.
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影响因子：
4.7
作者：
Qiang Zhou;S. Nielsen;W. Qu
通讯作者：
Qiang Zhou;S. Nielsen;W. Qu
利用磁流变阻尼器控制非线性连续钢筋混凝土桥梁在极端地震下的震害
影响因子：
4
作者：
李忠献;陈宇;石运东
通讯作者：
石运东
影响因子：
1.8
作者：
R. Stanway;J. Sproston;N. G. Stevens
通讯作者：
R. Stanway;J. Sproston;N. G. Stevens
DOI：
10.1080/00423119308969544
发表时间：
2021-07
期刊：
The Dynamics of Vehicles on Roads and on Tracks
影响因子：
--
作者：
W. Zhai;Xiang Sun
通讯作者：
W. Zhai;Xiang Sun
影响因子：
4.6
作者：
Kwok, N. M.;Ha, Q. P.;Samali, B.
通讯作者：
Samali, B.