Study on relationship between oblique fatigue crack and rail wear in curve track and prevention
Study on relationship between oblique fatigue crack and rail wear in curve track and prevention
复制标题
曲线轨道斜疲劳裂纹与钢轨磨损的关系及预防研究
DOI：
10.1016/j.wear.2008.12.100
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发表时间：
2009-06
期刊：
影响因子：
5
通讯作者：
Zhu, M.H.
中科院分区：
文献类型：
--
作者：
Zhou, Z.R.;Wang, W.J.;Guo, J.;Liu, Q.Y.;Zhu, M.H.
采用现场分析和理论计算相结合的方法，研究了曲线轨道斜向疲劳裂纹与钢轨磨耗的耦合关系。现场调查表明，钢轨侧磨严重，疲劳裂纹相对较轻。钢轨磨损率的增加可以减轻其疲劳损伤。钢轨侧磨与疲劳裂纹损伤之间存在着竞争与约束的耦合关系。针对广深铁路曲线轨道斜裂缝病害，提出了一种新的非对称钢轨打磨方法。现场试验结果表明，钢轨非对称磨削增大了轮缘与钢轨间的导向力，减轻了钢轨磨损。这种新的钢轨打磨方法通过增加钢轨的人工磨损率，可以显著减轻高速曲线轨道钢轨的疲劳斜裂纹损伤。
The coupling relationship between oblique fatigue crack and rail wear in curve track was investigated by means of field analysis and theoretical calculation. The field investigations indicate that while the side wear of rail is serious, the fatigue crack is relatively slight. The increase of rail wear rate can alleviate its fatigue damage. The relationship between side wear of rail and fatigue crack damage seems as competitive and restrictive coupling mechanisms. Thus, a new asymmetrical rail grinding method was developed to prevent oblique crack damage of curve track in Guangzhou–Shenzhen railway. The field test results indicate that the asymmetrical rail grinding increases the guidance force between wheel flange and rail and aggravates rail wear. This new rail grinding method can dramatically alleviate rail fatigue oblique crack damage in high-speed curve track by increasing artificially wear rate.
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DOI：
--
发表时间：
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期刊：
Railway Gazette international
影响因子：
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作者：
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DOI：
10.1243/0954409011531558
发表时间：
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期刊：
Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit
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