文档介绍：:..中文摘要从无缝线路的定义与铺设无缝线路的意义出发,介绍了无缝线路养护和维修的主要规定、基本要求、原则及要点;对无缝线路工作中存在的问题进行分析,找出了发生无缝线路胀轨的主要原因,并针对实际情况,就如何落实标准化,加强无缝线路管理,保证无缝线路设备安全提出了相应的对策;且在总结经验的基础上,从胀轨跑道发生的原因、预兆、预防、处理上作了全面论述,有利于无缝线路的养护维修和运营安全;铁路工务事故从钢轨裂纹、折断,夹板裂纹、折断,辙叉的伤损及无缝线路钢轨折断四方面分析了“三折”事故发生的原因,并从接头的养护及钢轨的养护维修方面介绍了防止“三折”事故的措施,以避免这一现象的发生;无缝道岔是无缝线路的薄弱环节,无缝道岔养护维修中发现直尖轨拉成旁弯,尖轨中部轨距减小,直基本股钢轨有较大的附加温度应力,道岔前后钢轨锁定轨温失控,岔前与限位器间实际锁定轨温严重超限等问题;通过实际情况提出通过改进无缝道岔结构方式,及无缝道岔单元管理方式解决道岔存在的问题;曲线是线路上的薄弱环节之一,根据曲线的主要病害对曲线适当做一些养护措施,提高线路质量,保证行车安全;工务设备是铁路运输的基础,经常了解工务设备的变化状态,对于正确组织线路维修及大中修工作,以及充分发挥设备的潜力都有重大意义。关键词:无缝线路养护维修胀轨跑道轨温三折折断无缝道岔附加问题应力直尖轨工务设备AbstractFromthedefinitionofCWRCWRandthesignificanceofthelayingofthestarting,IntroducedCWRconservationandmaintenanceofthemainprovisionsofthebasicrequirements,principlesandkeypoints;CWRworkonproblemsintheanalysisof,urrenceofthemainreasonsforrailexpansion,Andfortheactualsituation,onhowtoimplementstandardization,strengtheningCWRmanagement,hecorrespondingcountermeasures;Insumminguptheexperienceandonthebasisofthetrackfromtherunwayexpansioncausesomen,prevention,treatmentmadeafullexpositioninfavorofCWRconservationmaintenanceandoperatingsafety;identsfromthepublicworksrailcrack,break,cracksplint,brokenfrogCWRoffailuresandbrokenrailsanalysisoffour"ThreeFolding"ident,Andfromthejointsoftheconservationandmaintenanceofrailhasbeenintroducedtopreventthe"ThreeFolding"incident,urrenceofthisphenomenon;SeamlessswitchistheweaklinkinCWR,seamlessswitchmaintenancetrackfoundasharppullstraightintothesidebending,thecentralrailgaugesharpdecrease,thebasicunitstraightrailmoreadditionalthermalstress,beforeandaftertherailswitchlocktracktemperatureoutofcontrol,thebifurcationbetweentheformerandlimittheactualdevicetemperaturelockrailgaugeissuessuchasserious;Throughtheactualsituationbyimprovingthestructureoftheseamlesswayswitch,andswitchseamlesslyswitchunitmanagementproblemstosolve;ordancewithcurvecurveappropriatetodosomethingforconservationmeasurestoimprovethelinequality,toensuretrafficsa