高速铁路接触网定位线夹的动力学分析

张海波; 赵颖昕; 赵蒙; 赵清媛; 余颢; 刘磊

doi:10.21656/1000-0887.460056

高速铁路接触网定位线夹的动力学分析

doi: 10.21656/1000-0887.460056

张海波¹,
赵颖昕^1, ,,
赵蒙²,
赵清媛¹,
余颢³,
刘磊⁴

1. 中国铁道科学研究院集团有限公司标准计量研究所，北京 100000;^{2. 南京工业大学土木工程学院，南京 211816;^{3. 中国铁路西安局集团有限公司，西安 710000;^{4. 中国铁路兰州局集团有限公司，兰州 730000}}}

基金项目:

中国铁道科学研究院基金项目（2024YJ288）；中国国家铁路集团有限公司青年科研专项（Q2024G019）

详细信息

作者简介:
张海波（1980—），男，正高级工程师，硕士(E-mail: zhbjcw@126.com);赵颖昕(1989— )，男，高级工程师，博士(通信作者. E-mail: yxzhao15801042226@163.com).

通讯作者:
赵颖昕(1989— )，男，高级工程师，博士(通信作者. E-mail: yxzhao15801042226@163.com).

中图分类号: U225.4
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- 被引次数: 0
出版历程
- 收稿日期: 2025-03-24
- 修回日期: 2025-07-31
- 网络出版日期: 2026-10-31

Dynamics Analysis of Catenary Positioning Wire Clips for HighSpeed Railway

1. Standards & Metrology Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing 100000, P.R. China;^{2. School of Civil Engineering, Nanjing Tech University, Nanjing 211816, P.R. China;^{3. China Railway Xi’an Bureau Group Co., Ltd., Xi’an 710000, P.R. China;^{4. China Railway Lanzhou Bureau Group Co., Ltd., Lanzhou 730000, P.R. China}}}

摘要

摘要: 针对高速铁路接触网定位线夹在动态载荷下的力学行为，基于非线性有限元方法构建了包含定位器销钉、主夹板、副夹板及U型销钉的三维多体动力学模型.采用混合网格划分技术，结合分阶段加载策略，模拟了周期性振动、实际振动以及冲击抬升三种典型工况.研究结果表明：水平拉力与动态载荷的耦合作用显著影响定位线夹的应力分布与变形模式.低拉力工况下，U型销钉因剪切作用产生明显变形，接触界面滑移与碰撞导致局部应力集中；高拉力工况下，夹板间摩擦约束增强抑制相对滑动，但主夹板侧面及销钉根部呈现持续应力集中.动态载荷通过接触界面能量传递主导应力场时空演化，传统静态设计准则难以适应高速动态环境.基于仿真结果，提出优化夹持面的几何参数以降低应力梯度，并建议开发弹性约束结构以改善动态响应特性.研究为定位线夹结构设计与可靠性评估提供了理论依据，对提升接触网系统服役性能具有工程指导意义.
- 接触网 /
- 定位线夹 /
- 动力学分析 /
- 应力分布
Abstract: The dynamic mechanical behavior of high-speed railway catenary positioning wire clips was investigated by the nonlinear finite element analysis, and a 3D multi-body dynamic model comprising positioning dowels, main clips, auxiliary clips, and U-bolts was established. The hybrid meshing technique with the step loading strategy was used to effectively simulate the cyclic vibration, the actual vibration, and the impact lift conditions. The results demonstrate that, the horizontal tension-dynamic load coupling markedly affects stress distributions and deformation characteristics, where low tension conditions induce significant U-bolt shear deformation accompanied by stress concentration from interface sliding and impact, while high tension conditions enhance frictional constraints between clips to suppress relative displacement yet cause sustained stress concentration at the main clip side surface and the bolt root. Dynamic loads govern spatiotemporal stress evolution through interfacial energy transfer, revealing limitations of conventional static design criteria. The geometric optimization of clamping surfaces was proposed to mitigate stress gradients, with elastic constraint mechanisms recommended to improve dynamic response performance. This research establishes a theoretical foundation for structural design and reliability evaluation of catenary positioning wire clips, providing practical solutions for improving catenary system durability under high-speed operations.
- catenary /
- positioning wire clip /
- dynamics analysis /
- stress distribution

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