中国铁道科学2017，Vol.38Issue(5)：78-84,7.DOI:10.3969/j.issn.1001-4632.2017.05.11
高速铁路轮轨匹配存在问题及对策
Solutions for Problems at Wheel-Rail Interface in High Speed Railway
摘要
Abstract
Poor contact position,the lateral acceleration alarming of EMU bogie frame,abnormal vibration,rail corrugation as well as fatigue cracks at the non-working side of straight switch rail are major existing problems at wheel-rail interface of high speed railway in China.To solve these problems,analysis and discussion are done to find their causes and solutions.Research about wheel-rail contact relationship,equivalent conicity,wheel-rail matching,rail grinding and the treatment of straight switch rail helps to propose corresponding solutions.Results show that,poor contact position occurs as the mismatching between wheel profile and the 60 kg · m-1 rail profile,and using 60 N rail profile can make the wheel-rail contact position in the center of the rail.To reduce the equivalent conicity of wheel-rail,thereby inhibiting the abnormal vibration of EMU and lateral acceleration overrun of bogie,the rail profile should be grinded as the designed profile or 60 N rail profile.The rail corrugation will easily develop as the depth of grinding wave is large by using GMC96-B and GMC96-X rail grinding vehicle,and using the machine grinding can effectively control the corrugation.Fatigue cracks formed at the non-working side of straight switch rail due to long-term stress concentration and not chamfering of the edge,and it can be effectively controlled by rounding the edge and the modification of combination section of rail profile.关键词
轮轨匹配/轮轨接触关系/构架横向加速度/钢轨波磨/等效锥度/高速铁路Key words
Wheel-rail matching/Wheel-rail contact relation/Lateral acceleration of frame/Rail corrugation/Equivalent conicity/High speed railway分类
交通工程引用本文复制引用
周清跃,刘丰收,张银花,田常海,俞喆,张金..高速铁路轮轨匹配存在问题及对策[J].中国铁道科学,2017,38(5):78-84,7.基金项目
中国铁路总公司科技研究开发计划项目(2015G006-A,2016G008-A) （2015G006-A,2016G008-A）
中国铁道科学研究院行业服务技术创新项目(2015YJ121) （2015YJ121）
