轨道交通小半径曲线侧磨规律研究
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摘要
外轨侧磨已经是制约轨道交通小半径曲线钢轨寿命的主要原因,理论与实践相结合才能准确掌握侧磨的发展规律。通过长期的现场跟踪实验,研究广州地铁的小半径曲线外轨侧磨速率;同时采取数值仿真的方法与现场实验相比较,预测侧磨的发展趋势。结果表明:A型车对300 m半径曲线外轨产生的侧磨速率均值为0.35 mm/月,直线电机车辆对300 m半径曲线外轨产生的侧磨速率最大值达到0.21 mm/月;同一区段上下行曲线侧磨发展速率并不一致;基于Archard磨耗模型的数值仿真结果能够很好地与现场实验结果相吻合,因此可以用于预测小半径曲线的侧磨速率。研究结果能够为工务部门对小半径曲线的养护维修提供科学依据。
The lifecycle of rails on small radial curve of metro track is reduced mainly by side wear. However, the development trend of the side wear can be accurately determined by experiments and theoretical calculations. In this paper, the outer rail side wear rate of the small radial curve of Guangzhou metro was studied through long-term on-site tracking experiments.Moreover, the results of the experiments were compared with numerical simulations to predict the development trend of side wear. The results show that the average wear rate of the A-type vehicle to the 300 m radial outer rail is 0.35 mm/month, while the maximum value of the side wear rate generated by the linear motor vehicle to the R-300 m radial outer rail is0.21 mm/month. Meanwhile, the rate of development of the side wear of outer rail in the curve with opposite direction are significantly different. Based on Archard wear model, the numerical simulation results are consistent with the experimental results and can therefore be used to predict the side grinding rate of the small radial curve. The research results can provide a scientific basis for the public works department in maintaining a small radial curve.
The lifecycle of rails on small radial curve of metro track is reduced mainly by side wear. However, the development trend of the side wear can be accurately determined by experiments and theoretical calculations. In this paper, the outer rail side wear rate of the small radial curve of Guangzhou metro was studied through long-term on-site tracking experiments.Moreover, the results of the experiments were compared with numerical simulations to predict the development trend of side wear. The results show that the average wear rate of the A-type vehicle to the 300 m radial outer rail is 0.35 mm/month, while the maximum value of the side wear rate generated by the linear motor vehicle to the R-300 m radial outer rail is0.21 mm/month. Meanwhile, the rate of development of the side wear of outer rail in the curve with opposite direction are significantly different. Based on Archard wear model, the numerical simulation results are consistent with the experimental results and can therefore be used to predict the side grinding rate of the small radial curve. The research results can provide a scientific basis for the public works department in maintaining a small radial curve.
引文
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[12]颜怡翥.广州地铁5号线小半径曲线钢轨磨耗分析[J].城市轨道交通研究,2011,14(6):55-57.YAN Yizhu.Analysis of sharp curve rail wear of Guangzhou subway line5[J].Urban mass transit,2011,14(6):55-57.
[13]张建武.关于广州地铁五号线曲线钢轨磨耗及几段线小半径更换钢轨的探讨[J].科技信息,2013(20):366.
[14]邓军,贾朋磊.广州市轨道交通车辆车轮统型分析及研究[J].轨道交通装备与技术,2016(1):18-21.
[15]王伯铭.城市轨道交通车辆总体及转向架[M].北京:科学出版社,2013:40-60.
[2]王志军.重载铁路小半径曲线钢轨磨耗规律及减磨措施[J].山西建筑,2016,42(5):162-164.WANG Zhijun.Small radius curve rail abrasion law and abrasion reducing measures of heavy-load railways[J].Shanxi architecture,2016,42(5):162-164.
[3]高盟.重载铁路圆曲线参数对钢轨磨耗的影响分析[J].山西建筑,2017,43(17):135-137.GAO Meng.The influence analysis on the heavy rail curve parameters to rail wear[J].Shanxi architecture,2017,43(17):135-137.
[4]李伟,马战国,司道林.重载铁路曲线几何参数对钢轨磨耗影响的研究[J].铁道建筑,2013(6):130-134.
[5杜伟.重载铁路曲线段轮轨磨耗影响因素分析[D].成都:西南交通大学,2012.ZHONG Wei.Analysis of the influence factors of the wheel-rail wear on the curves of heavy haul railway[D].Chengdu:Southwest Jiaotong University,2012.
[6]钟智丰.重载铁路小半径曲线钢轨磨耗研究[D].北京:北京交通大学,2014.ZHONG Zhifeng.Research for rail wear of heavy haul railway on small radius curve[D].Beijing:Beijing Jiaotong University,2014.
[7]高长宇.曲线钢轨侧面磨耗的形成机理及减缓措施[D].成都:西南交通大学,2003.GAO Changyu.Analysis of the mechanism and retreading measures of side wear of rail on curves[D].Chengdu:Southwest Jiaotong University,2013.
[8]孙宏,杜新民.提速200 km/h线路曲线病害及钢轨磨耗发展规律研究[J].铁道建筑,2007(11):84-86.
[9]张武军.小半径曲线侧磨病害成因及防治方法研究[J].甘肃科技纵横,2015(3):81-83.
[10]娄平,冯静霆,邱德仁,等.铁路曲线外股钢轨侧面磨耗规律研究[J].铁道科学与工程学报,2016,13(2):238-244.LOU Ping,FENG Jingting,QIU Deren,et al.Study on the laws of the side wear of the outer rail in railway curve[J].Journal of railway science and engineering,2016,13(2):238-244.
[11]陈佳君.上海地铁一号线曲线钢轨侧磨研究[J].山西建筑,2012,38(27):154-156.CHEN Jiajun.Research on side wear of curve rail at No.1 line of Shanghai subway[J].Shanxi architecture,2012,38(27):154-156.
[12]颜怡翥.广州地铁5号线小半径曲线钢轨磨耗分析[J].城市轨道交通研究,2011,14(6):55-57.YAN Yizhu.Analysis of sharp curve rail wear of Guangzhou subway line5[J].Urban mass transit,2011,14(6):55-57.
[13]张建武.关于广州地铁五号线曲线钢轨磨耗及几段线小半径更换钢轨的探讨[J].科技信息,2013(20):366.
[14]邓军,贾朋磊.广州市轨道交通车辆车轮统型分析及研究[J].轨道交通装备与技术,2016(1):18-21.
[15]王伯铭.城市轨道交通车辆总体及转向架[M].北京:科学出版社,2013:40-60.