地铁扣件参数对波磨振动贡献率的影响研究
李慧娟，车聪聪
（中车青岛四方机车车辆股份有限公司，山东 青岛 266111）
摘要：利用地铁车辆－轨道动力学模型，结合线路实测钢轨波磨不平顺数据进行研究，分析了在0～400 mm常见特征波磨时钢轨扣件参数变化下的轴箱振动特性：表现出40～100 Hz 、100～180 Hz及240～320 Hz三个主频带，垂向振动幅值与扣件垂向刚度、阻尼大小具有一定相关性。在40～100 km/h速度区间随着速度增加，幅值最大主频带会呈现以低频、高频、中频带为主的变化规律。结果表明：车辆速度及扣件参数变化会对特定波磨输入的轴箱振动特性产生影响，说明走行部振动研究中，考虑扣件参数带来的对波磨振动贡献率的影响的必要性；同时，需考虑轮轨耦合系统共振以及各自约束模态带来的影响。
关键词：地铁；扣件参数；振动特性；波磨振动贡献率
中图分类号：U211.3 文献标志码：A doi：10.3969/j.issn.1006-0316.2020.10.011
文章编号：1006－0316 (2020) 10－0066－08
Study on the Influence of Metro Fastener Parameters on the Contribution Rate of Corrugated Vibration
LI Huijuan，CHE Congcong
( CRRC Qingdao Sifang Co., Ltd., Qingdao 266111, China )
Abstract：On the basis of the vehicle-track dynamics model of metro system and the measured rail corrugation irregularity data, the vibration characteristics of the axle-box under the variation of the rail fastener parameters during the common corrugation of 0～400 mm are analyzed, which indicates that the vertical vibration amplitude of the main frequency bands of 40～100 Hz, 100～180 Hz and 240～320 Hz have a certain correlation with the vertical stiffness and damping of the fastener. When the speed range is 40-100km/h, the maximum main frequency band will successively appears at low frequency, high frequency and medium frequency band with the increase of the speed. The results show that the change of vehicle speed and fastener parameters will affect the vibration characteristics of the axle-box when the specific corrugation is input, which indicates the importance of taking influence of the fastener parameters on the contribution rate of the corrugation vibration into consideration during running gear vibration study; and the effects of the resonance of the wheel-rail coupled system and the respective constraint mode also need to be considered.
Key words：metro；fastener parameters；vibration characteristics；contribution rate of the rail corrugation vibration
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收稿日期：2020－04－10
作者简介：李慧娟（1983－），女，山东青岛人，硕士研究生，高级工程师，主要研究方向为事轨道交通车辆电气系统，E-mail：sjy412@163.com；车聪聪（1982－），男，山东青岛人，硕士研究生，高级工程师，主要研究方向为轨道交通车辆网络系统。
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