偏载对重载货车运行安全性的影响
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摘要
为了研究货车偏载对其运行安全的影响,在静力分析的基础上,建立了C80型重载货车的动力学模型,计算了货车在不同偏载状态下通过曲线时的脱轨系数和轮重减载率。分析结果表明:随着偏载的增大,货车的运行安全性逐渐降低。其中纵向偏载主要影响货车车轮的脱轨系数,而横向偏载主要影响车辆的轮重减载率。随着横向偏载的增大,轮重减载率增大尤为明显,所以要严格控制车辆的横向偏载。
Based on the static analysis,dynamic model of C80 heavy haul train was built to investigate the influence of partial load on running safety of heavy haul train.Under the different partial load condition,the derailment coefficient and the wheel load reduction rate were calculated when the train passed the curve.The analysis results show that with the increase of partial load,the running safety of the train is getting worse.Longitudinal partial load has main effect on the derailment coefficient of wheel,and lateral partial load has main effect on the rate of wheel load reduction.With the increase of lateral partial load,the rate of wheel load reduction increases obviously,so the lateral partial load should be strictly controlled.
Based on the static analysis,dynamic model of C80 heavy haul train was built to investigate the influence of partial load on running safety of heavy haul train.Under the different partial load condition,the derailment coefficient and the wheel load reduction rate were calculated when the train passed the curve.The analysis results show that with the increase of partial load,the running safety of the train is getting worse.Longitudinal partial load has main effect on the derailment coefficient of wheel,and lateral partial load has main effect on the rate of wheel load reduction.With the increase of lateral partial load,the rate of wheel load reduction increases obviously,so the lateral partial load should be strictly controlled.
引文
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[3]中华人民共和国铁道部.铁路货物装载加固规则(铁运〔2006〕161号)[M].北京:中国铁道出版社,2013.
[4]赵红伟.一种用于货车超载及偏载监制传感器的设计与研究[D].长沙:中南大学,2008.
[5]张立员,张兴.基于脱轨系数安全标准的货物重心纵向容许偏移量的研究[J].铁道运输与经济,2011,33(1):81-85.
[6]陈超,韩梅,王艳玲.基于脱轨系数安全标准的铁路货物重心横向容许偏移量的研究[J].铁道学报,2008,30(2):12-16.
[7]彭永昭.铁路货车装载工况对车辆运行安全影响的机理及仿真实验研究[D].北京:北京交通大学,2013.
[8]董杰.货物重心偏移装载条件下提速货车运行安全性的研究[D].北京:北京交通大学,2011.
[9]关庆华,曾京,陈哲明.考虑冲角影响的改进脱轨准则[J].中国铁道科学,2009,30(3):74-80.