• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2017, Vol. 53 ›› Issue (10): 125-135.doi: 10.3901/JME.2017.10.125

• 运载工程 • 上一篇    下一篇

直线电动机地铁线路焊接接头不平顺测试分析及安全限值研究

杨云帆, 陶功权, 付青云, 钟文生, 温泽峰   

  1. 西南交通大学牵引动力国家重点实验室 成都 610031
  • 出版日期:2017-05-15 发布日期:2017-05-15
  • 作者简介:杨云帆,男,1988年出生。主要研究方向为车辆动力学。E-mail:yunfanyang525@126.com温泽峰(通信作者),男,1976年出生,研究员,博士研究生导师。主要研究轮轨关系和车辆动力学。E-mail:zefengwen@126.com
  • 基金资助:
    * 国家科技支撑计划课题(2015BAG12B01-16)和牵引动力国家重点实验室自主课题(2015TPL_T01)资助项目; 20160726收到初稿,20170113收到修改稿;

Field Measurement and Safety Limits of Rail Weld Irregularity on LIM Metro Line

YANG Yunfan, TAO Gongquan, FU Qingyun ,ZHONG Wensheng, WEN Zenfeng   

  1. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031
  • Online:2017-05-15 Published:2017-05-15

摘要:

对国内某直线电动机地铁无缝线路钢轨焊接接头不平顺进行大量测试,并进行统计分析,发现焊接接头不平顺形式主要表现为单谐波形、叠合形和马鞍形和多谐波形。建立一种直线电动机地铁车辆-板式轨道耦合动力学模型,以确定性焊接不平顺作为轮轨激扰输入。基于仿真计算,详细调查分析了单谐波形、多谐波形、叠合形和马鞍形焊接接头不平顺波长和波深对轮轨动力响应的影响,并提出了不同类型焊接接头不平顺的安全限值和打磨界限。研究结果表明:焊接接头不平顺的短波长和较大短波波深会恶化轮轨相互动力作用。该研究结果可为直线电动机地铁线路焊接区不平顺的养护维修管理提供 参考。

关键词: 安全限值, 车辆-轨道耦合动力学, 直线电动机地铁车辆, 焊接接头

Abstract:

A detailed investigation of rail weld irregularity through extensive measurement is conducted at field sites on LIM metro lines. The measurement results show that the rail weld irregularities have four typical forms, i.e., single harmonic form, multiple-harmonic form, overlapping shape and saddle shape. In order to investigate the influence of rail weld irregularities on vehicle-track dynamic performance, a simulation model for an LIM vehicle coupled with the slab track is developed. The deterministic irregularities are as the input of the excitation of wheel-rail interface. The dynamic response of the wheel-rail is analyzed, and the safety limits of the different types of rail weld irregularity are given based on the dynamic simulation. The simulation results show that the wavelength and depth of short wave rail weld irregularity have great effects on wheel-rail interaction. The research results can provide a theoretical reference for the maintenance management of rail weld irregularities on LIM metro line.

Key words: rail weld, safety limits, vehicle-track coupled dynamics, LIM metro vehicles