华中科技大学学报（自然科学版）2016，Vol.44Issue(4)：95-100,6.DOI:10.13245/j.hust.160419
高速铁路钢轨打磨对轮轨接触关系的影响
Influence of rail grinding on wheel-rail contact relationship for high-speed railway
摘要
Abstract
According to the track irregularity quality index by track inspection car of the grinded Wu‐han‐Guangzhou high‐speed rail ,the actual wheel‐rail profile after grinding was simulated using finite element method in order to study the effect of rail grinding on wheel‐rail contact condition .The calcu‐lation results show that w heel‐rail contact points move to the rail surface center after grinding ,a 20~30 mm contact band occurs at the top of rail after grinding .Slight widening of contact band and doub‐le‐point contact arises when the passing gross weight is about 3 .979 × 107 t ,13 months later after the grinding .Contact band width increases significantly up to 35 mm when the passing gross weight is about 5 .203 × 107 t ,17 months later after the grinding ,The alarm parameters of the lateral accelera‐tion of track inspection car at Zhuzhou and Guanzhou high‐speed track division indicate that rail grind‐ing can effectively reduce the lateral acceleration alarms of the trains .To some extent ,the change of power supply in Changsha power supply station indicates that rail grinding can effectively reduce the power consumption of the trains .关键词
高速铁路/钢轨打磨/接触应力/光带/横向加速度/供电量Key words
high-speed railway/rail grinding/contact stress/contact band/lateral acceleration/pow-分类
交通工程引用本文复制引用
任娟娟,赵华卫,欧阳明..高速铁路钢轨打磨对轮轨接触关系的影响[J].华中科技大学学报（自然科学版）,2016,44(4):95-100,6.基金项目
国家自然科学基金资助项目（51578472，U 1434208）；中国铁路总公司科技研究开发计划资助项目（2015G001-F）． （）
