| 基于轮轨蠕滑最小化的钢轨打磨研究 |
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| 引用本文： | 郭战伟.基于轮轨蠕滑最小化的钢轨打磨研究[J].中国铁道科学,2011,32(6). |
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| 作者姓名： | 郭战伟 |
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| 作者单位： | 北京交通大学土木建筑工程学院,北京,100044 |
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| 基金项目： | 国家"八六三"计划重点项目，铁道部科技研究开发计划项目 |
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| 摘 要： | 根据对轮轨蠕滑形成机理的研究,指出轮轨接触的滚动半径差是影响轮轨蠕滑的重要参数；利用车辆动力学软件NUCARS和选用不同钢轨廓形,仿真计算滚动半径差对轮轨关系的影响,据此提出应通过钢轨打磨,消除或减弱轮轨蠕滑,从而实现轮轨关系的改善,达到延长钢轨使用寿命的目的.理论计算和现场钢轨打磨试验表明,在大秦重载铁路实施钢轨打磨后,滚动半径差减小,钢轨的廓面形状与车轮形成贴合型接触,降低了轮轨蠕滑力和横向力以及轮轨滚动阻力,改善了轮轴转向特性,使钢轨的平均侧磨减少了将近50％,钢轨的通过总重从9×108 t增加到15×108 t以上.
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| 关 键 词： | 钢轨打磨 轮轨关系 蠕滑 滚动半径差 |
Study of Rail Grinding Based on Wheel Rail Creep Minimization |
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| GUO Zhanwei.Study of Rail Grinding Based on Wheel Rail Creep Minimization[J].China Railway Science,2011,32(6). |
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| Authors: | GUO Zhanwei |
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| Institution: | GUO Zhanwei(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China) |
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| Abstract: | According to the researches on the formation mechanism of wheel rail creep,it is found that the rolling radius difference of wheel rail contact is an important parameter affecting wheel rail creep.By using vehicle dynamics software NUCARS and selecting different rail profiles as well,simulation was carried out on the effects of the rolling radius difference on wheel-rail interaction.Based on this,it is proposed that wheel rail creep should be eliminated or reduced by rail grinding.Accordingly,the wheel rail... |
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| Keywords: | Rail grinding Wheel-rail interaction Creepage Rolling radius difference |
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