基于磨耗的高速铁路轮轨接触关系研究
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摘要
在对京沪高铁开展轮轨型面跟踪测试的基础上,分析LM_A和LM_B车轮型面分别与60D钢轨型面匹配时的轮轨磨耗特征;利用数值仿真手段,研究磨耗后不同轮轨型面匹配组合下的轮轨接触范围与钢轨光带宽度和等效锥度的关联性;通过分析钢轨光带宽度与等效锥度的关联性,结合名义等效锥度限值,研究避免高速动车组运行过程中出现典型异常振动问题的钢轨接触光带合理范围。结果表明:高速铁路的钢轨磨耗远小于车轮磨耗;直线区段钢轨磨耗主要分布于钢轨顶弧中心附近,轮轨接触宽度与钢轨光带宽度相对应;钢轨光带宽度与轮轨匹配名义等效锥度正相关,钢轨光带宽度小于20 mm时易出现动车组车体晃车、大于45 mm时易出现动车组转向架横向振动加速度报警。
On the basis of wheel-rail profile tracking test of Beijing-Shanghai high-speed railway, the wheel-rail wear characteristics of LM_A and LM_B wheel profile matching with 60 D rail profile were analyzed respectively. By means of numerical simulation, the wheel-rail contact relationships with different wheel-rail wear profile matching were studied, and the relationships between the rail band width, wheel-rail contact range and equivalent conicity were clarified. Considering the limit value of nominal equivalent conicity, the reasonable range of rail contact band was obtained by analyzing the relationship between the rail band width and the equivalent conicity to avoid the typical abnormal vibration problems during the operation of high-speed EMUs. Results show that the rail wear of the high-speed railway is far less than wheel wear. The rail wear in the straight line section is mainly distributed near the center of rail top arc, and the wheel-rail contact width corresponds to rail band width. The rail band width is positively correlated with the nominal equivalent conicity of wheel-rail matching. When the rail band width is less than 20 mm, the car body of EMU is very likely to shake, and when the rail band width is greater than 45 mm, the lateral vibration acceleration alarm of the EMU bogie is prone to occur.
On the basis of wheel-rail profile tracking test of Beijing-Shanghai high-speed railway, the wheel-rail wear characteristics of LM_A and LM_B wheel profile matching with 60 D rail profile were analyzed respectively. By means of numerical simulation, the wheel-rail contact relationships with different wheel-rail wear profile matching were studied, and the relationships between the rail band width, wheel-rail contact range and equivalent conicity were clarified. Considering the limit value of nominal equivalent conicity, the reasonable range of rail contact band was obtained by analyzing the relationship between the rail band width and the equivalent conicity to avoid the typical abnormal vibration problems during the operation of high-speed EMUs. Results show that the rail wear of the high-speed railway is far less than wheel wear. The rail wear in the straight line section is mainly distributed near the center of rail top arc, and the wheel-rail contact width corresponds to rail band width. The rail band width is positively correlated with the nominal equivalent conicity of wheel-rail matching. When the rail band width is less than 20 mm, the car body of EMU is very likely to shake, and when the rail band width is greater than 45 mm, the lateral vibration acceleration alarm of the EMU bogie is prone to occur.
引文
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[3] 周清跃,田常海,张银花,等.CRH3型动车组构架横向失稳成因分析[J].中国铁道科学,2014,35(6):105-110.(ZHOU Qingyue,TIAN Changhai,ZHANG Yinhua,et al.Cause Analysis for the Lateral Instability of CRH3 EMU Framework[J].China Railway Science,2014,35(6):105-110.in Chinese)
[4] 朱韶光,董孝卿,许自强,等.服役动车组异常振动研究[C]// “提高旅客舒适度”学术研讨会.北京:中国铁道学会车辆委员会,2016.
[5] 侯茂锐,方兴,常崇义,等.高速铁路轮轨关系现场试验方案设计研究[J].中国铁路,2018(1):30-35.(HOU Maorui,FANG Xing,CHANG Chongyi,et al.Design and Study of Field Test of HSR Wheel-Rail Interaction[J].China Railway,2018(1).in Chinese)
[6] 干锋,戴焕云,高浩,等.铁道车辆不同踏面等效锥度和轮轨接触关系计算[J].铁道学报,2013,35(9):19-24.(GAN Feng,DAI Huanyun,GAO Hao,et al.Calculation of Equivalent Conicity and Wheel-Rail Contact Relationship of Different Railway Vehicle Treads[J].Journal of the China Railway Society,2013,35(9):19-24.in Chinese)
[7] 董孝卿,许自强,史峰宝,等.构架报警动车组运行稳定性的线路试验研究[J].铁道机车车辆,2017,37(5):1-5,49.(DONG Xiaoqing,XU Ziqiang,SHI Fengbao,et al.The Field Test Research for Running Stability of EMU in Bogie Alarm[J].Railway Locomotive & Car,2017,37 (5):1-5,49.in Chinese)
[8] 何旭升,吴会超,高峰.高速动车组晃车机理试验研究[J].大连交通大学学报,2017,38(1):21-25.(HE Xusheng,WU Huichao,GAO Feng.Test Study on Carbody Swing of High-Speed EMUs[J].Journal of Dalian Jiaotong University,2017,38(1):21-25.in Chinese)
[9] 董孝卿,王悦明,倪纯双,等.服役动车组车轮踏面等效锥度运用管理研究[J].铁路技术创新,2015(2):83-87.(DONG Xiaoqing,WANG Yueming,NI Chunshuang,et al.Study on the Application Management of the Equivalent Conicity of the Wheel Tread on the Service EMU[J].Railway Technical Innovation,2015(2):83-87.in Chinese)