地铁钢轨波磨演化过程中的特性分析

doi:10.3901/JME.2018.04.070

机械工程学报 ›› 2018, Vol. 54 ›› Issue (4): 70-78.doi: 10.3901/JME.2018.04.070

地铁钢轨波磨演化过程中的特性分析

李伟, 温泽峰, 王衡禹, 赵鑫, 王鹏

西南交通大学牵引动力国家重点实验室成都 610031

收稿日期:2017-07-05 修回日期:2017-11-02 出版日期:2018-02-20 发布日期:2018-02-20
通讯作者: 李伟(通信作者),男,1985年出生,博士,助理研究员。主要研究方向为轮轨关系。E-mail:1022liwei@163.com
基金资助:
国家自然科学基金（51105318）、教育部博士点基金（20130184110005）和四川省科技支撑计划（2011GZ0090）资助项目

Analysis on the Evolution Characteristics of Rail Corrugation on a Metro

LI Wei, WEN Zefeng, WANG Hengyu, ZHAO Xin, WANG Peng

State key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 61003, China

Received:2017-07-05 Revised:2017-11-02 Online:2018-02-20 Published:2018-02-20

摘要/Abstract

摘要： 调查分析了广州某条地铁线路轨道短波长钢轨波磨现象形成原因。首先，现场测试了线路钢轨波磨状态，对比分析了采用相同车辆结构和运营条件的另一条地铁线路钢轨波磨特征的差异。然后，基于地铁轮对-轨道高频相互作用线性理论和钢轨磨损理论，建立了钢轨波磨频域分析模型。最后，基于力锤敲击测试方法获得了轨道结构动态特性，利用钢轨波磨频域模型计算分析了地铁车辆通过半径800 m曲线时的钢轨磨损率特征。结果表明：①地铁线路采用的GJ-Ⅲ型减振扣件和DTVI型普通扣件长轨枕轨道在大半径（大于等于800 m）曲线均出现了30~40 mm波长钢轨波磨现象，其产生不是由轮对固有模态特性所致。②当车辆以90 km/h速度运行时，仿真获得的轨道钢轨磨损率在1030~1130 Hz和620~840 Hz范围表现最大，易萌生22~24 mm和28~40 mm波长波磨；仿真结果与现场测量的钢轨波磨特征吻合。③轨道垂向位移导纳值在620~840 Hz高频段表现低是导致该地铁线路出现30~40 mm短波长波磨的主要原因。

关键词: 地铁, 短波长钢轨波磨, 钢轨磨损率, 轨道导纳, 频域

Abstract: The formation cause of short-pitch rail corrugation occurred on a Guangzhou metro line is studied. Firstly, the characteristics of the corrugation are investigated through field measurement and observation. Besides, the rail roughness at another Guangzhou metro line with the same of vehicles and operation conditions is also measured and analyzed. Then, a numerical model combined the wheelset-track interaction and rail wear model is established. Based on the receptance of tracks measured by the hammer excitation technique, the rail wear rate in the frequency domain is calculated during the vehicle running at a curve with radius of 800 m. The investigated result indicates:① Tracks consist of GJ-Ⅲ elastic and DTVI traditional fasteners. Corrugations with wavelength of 30~40 mm have occurred at large radius curves. The operating speed of vehicle in corrugated tracks is about 80~90 km/h and the passing frequency of corrugations is 625~833 Hz. The high-frequency wheelset resonance is not related to the formation of the corrugation. ② The rail wear rate appears large at the 1030~1130 Hz and 620~840 Hz, which can results in the corrugation with wavelengths of 22~24 mm and 28~40 mm. This numerical result coincides with the result of field measurement. ③ The vertical characteristics of tracks with lower value of receptance at 620~830 Hz are the main cause of the short-pitch rail corrugations.

Key words: frequency domain, Metro, rail wear rate, short-pitch rail corrugation, track receptance

中图分类号:

U211.9

李伟, 温泽峰, 王衡禹, 赵鑫, 王鹏. 地铁钢轨波磨演化过程中的特性分析[J]. 机械工程学报, 2018, 54(4): 70-78.

LI Wei, WEN Zefeng, WANG Hengyu, ZHAO Xin, WANG Peng. Analysis on the Evolution Characteristics of Rail Corrugation on a Metro[J]. Journal of Mechanical Engineering, 2018, 54(4): 70-78.

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地铁钢轨波磨演化过程中的特性分析

Analysis on the Evolution Characteristics of Rail Corrugation on a Metro

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