高速列车通过防风过渡段的运行安全性研究
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摘要
在实测风载的基础上,建立车辆多体动力学仿真模型,计算车辆通过防风过渡段的运行安全性。研究结果表明:在过渡段风载作用下,车辆的运行速度、风载的作用时间对车辆的爬轨脱轨影响较大,风载大小对车辆的倾覆脱轨影响较大;在某一固定风况下,当车辆运行速度小于等于90 km/h时车辆运行安全;当车辆以大于90 km/h的速度运行且风载的作用时间较短时,车轮轮缘未与钢轨发生贴靠,车辆安全性能指标均在限值范围内;当车辆运行速度大于90 km/h且风载作用时间较长时,车轮轮缘与钢轨发生撞击,轮轨横向力和垂向力发生突变,易出现脱轨系数超限。
Based on the test data of wind load,a multi-body dynamics simulation model of vehicle was established to calculate the running safety of vehicle through wind-proof transition section.The results show that under the action of wind load of transient section,the vehicle speed and duration of the wind load have great influences on the derailment of vehicle climbing the rail.The power of wind affects the derailment of vehicle overturning greatly.In a specific wind condition,when the vehicle is running at a speed of equal to or less than 90 km/h,the vehicle runs safely.When the running speed of the vehicle is more than 90 km/h and the wind duration is short,the wheel flange does not contact the rail,so the safety performance indexes of vehicle are all within the limit range.But when the running speed of the vehicle is more than 90 km/h and the wind duration is long,the wheel flange impacts the rail,therefore the lateral and vertical wheel-rail forces are abrupt,and the derailment coefficients may easily exceed the limit.
Based on the test data of wind load,a multi-body dynamics simulation model of vehicle was established to calculate the running safety of vehicle through wind-proof transition section.The results show that under the action of wind load of transient section,the vehicle speed and duration of the wind load have great influences on the derailment of vehicle climbing the rail.The power of wind affects the derailment of vehicle overturning greatly.In a specific wind condition,when the vehicle is running at a speed of equal to or less than 90 km/h,the vehicle runs safely.When the running speed of the vehicle is more than 90 km/h and the wind duration is short,the wheel flange does not contact the rail,so the safety performance indexes of vehicle are all within the limit range.But when the running speed of the vehicle is more than 90 km/h and the wind duration is long,the wheel flange impacts the rail,therefore the lateral and vertical wheel-rail forces are abrupt,and the derailment coefficients may easily exceed the limit.
引文
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[2]ANDERSSON E,HGGSTRM J,SIMA M,et al.Assessment of Train-overturning Risk due to Strong Cross-winds[J].Proceedings of the Institution of Mechanical Engineers,Part F:Journal of Rail and Rapid Transit,2004,218:213-222.
[3]FUKUCHI G.Statical Consideration for Railway Vehicle Overturn due to Lateral Winds[J].Railway Technical Research Institute,Quarterly Reports,1975,16(2):49-53.
[4]KUNIEDA M.Theoretical Study on the Mechanics of Overturn of Railway Rolling Stock[J].Railway Technical Research Report,1972,793:1-15.
[5]LIPPERT S.On Side Wind Stability of Trains[D].Stockholm:Kungliga Tekniska H9gskolan Railway Technology,1999.
[6]ANDERSSON E,BERG M.Jrnvgssystem Och Sprfordon[D].Stockholm:Kungliga Tekniska H9gskolan Railway Technology,2001.
[7]于梦阁.高速列车风致安全研究[D].成都:西南交通大学,2010.
[8]中国铁路总公司.铁路技术管理规程(高速铁路部分)[M].北京:中国铁道出版社,2014.
[9]中国铁道科学研究院.兰新第二双线大风条件下行车安全专项试验2015年研究报告:TY字第4119号[R].北京:中国铁道科学研究院,2015.
[10]中国铁道科学研究院.兰新第二双线大风条件下行车安全专项试验研究报告:TY字第3889号[R].北京:中国铁道科学研究院,2015.
[11]寸冬冬,刁晓明,吴宁,等.突变风载作用下高速列车运行安全性分析[J].铁道机车车辆,2017,37(3):30-39.