高速铁路线路轨道维修技术的探讨  

Discussion on the Track Maintenance Technology of High-speed Railway Line

作　　者：张念淮[1] 李勇[1] 

机构地区：[1]郑州铁路职业技术学院,河南郑州450052

出　　处：《郑州铁路职业技术学院学报》2015年第4期1-3,6,共4页Journal of Zhengzhou Railway Vocational and Technical College

基　　金：郑州铁路职业技术学院重点课题(2011-2)

摘　　要：对高速列车在运行中存在的突出问题进行研究,分析轨道不平顺与车辆轮对相互作用对高速列车的幅值、波长、谐振频率的影响;研究轨道不平顺的类型,在正确地测得各种轨道不平顺的数据后,对轨道不平顺状态作出科学评价;用轨道质量指数等不平顺幅值的统计指标拟定250 m区段的轨道连续不平顺状态,利用动态检查得到的高低、轨向、轨距、水平、平面扭曲等综合指数,以250 m线路区段为一个单元作为轨道平顺性评定、判断和维修管理的基本长度单元;用基本长度单元的标准差对各项不平顺进行评价,标准差超差时,则运行状态不良,无论个别局部轨道不平顺的超差是多少,都要进行维修。这样能突出不平顺严重地段的统计特征,比较科学地权衡需要进行维修的区段。This paper aims to analyze and study the outstanding problems that exist in the operation of high-speed trains. It analyzes the impact of track irregularity and the interaction of vehicle wheels on the magnitude,the size of wavelength and the resonance frequency of the high-speed trains; it studies the types of track irregularity,and after the data are correctly measured concerning the variety of track irregularity,scientific evaluation will be made about the status of the track irregularity. Statistical indicators of irregularity amplitude such as the rail mass index will be used to prepare a track segment of 250 meters long characterized with continuous irregularity,using the composite index collected through dynamic checks concerning the height,direction,distance,level and distortion of the rails,taking 250 meter-long line segments as the basic length unit for track regularity assessment,judgment and maintenance; then all kinds of irregularity will be measured and evaluated with the standard deviation of this basic length unit,wherever standard deviation exceeds the allowable limits,the state will be determined as bad,andregardless of the extent of the track irregularity of the individual sites,they should all be repaired. In that way the statistical features of seriously irregular segments would be made prominent,enabling the scientific balance of the segments that need maintenance.

关 键 词：高速铁路 加速度 轨道不平顺 波形 

分 类 号：TK223.24[动力工程及工程热物理—动力机械及工程] TH137.9[机械工程—机械制造及自动化]