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ID:33962985
大小:7.15 MB
页数:69页
时间:2019-03-02
《重载列车荷载作用下反向曲线地段线路结构力学性能分析》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、万方数据ABSTRACTABSTRACTABSTRACT:Whenheavyhaulrailwaypassthroughthemoumamarea,topreventunfavorablesection,largesofcurvesandreversecurvesareset.Accordingtothesettingofreversecurvesofheavyhaulrailwayinourcountry,atheoreticalmodelwasestablished.Thereversecurvesmec
2、hanicalpropertiesofheavyhaultrainloadsisanalyzed,themainresearchresultsareasfollows:(1)Thereversecurveroutestructurefiniteelememsystemofheavyhaultrainloadswasestablishedonthebasisofmutualconnectionbetweentherail,sleeperandballast.Thereliabilityoftheproposed
3、modelistestedbythemeasureddata.(2)Thelateraldeformationofstructuretendstobestablewhenthenumberoftrainis6.Thelongitudinaldeformationofstructuretendstobestalewhenthenumberoftrainis8.Thestructuredeformationcausedbytrainloadscanbeignoredifthedistanceismorethan5
4、mfromthelateralforcepositionor25mfromthelongitudinalforceposition.(3)Themostunfavorablepositionistheabruptchangeofcurvaturewhenheavyhaultrainpassthroughthereversecurverome.Ifthestraightlinebetweencurvesisnotset,gaugewillsuddenlyexpandattheintersectionofdiff
5、erentcurveswhichhaveanadverseimpactontrafficsafety.Ifthestraightlinebetweencurvesisset,thelengthoflineshouldbegreaterthan10mtomeetthesafetyindex.KEYWORDS:heavyhaulrailway;reversecurve;mechanicalproperties;influencefactors;lengthofstraightlinebetweencurvesCI
6、.ASSNO:IJ213Ⅵl万方数据目录中文摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯“ABSTRACT⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯vii1绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..11.1研究背景⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.11.1.1国外重载铁路的发展⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯21.1.2我国重载铁路的发展⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯31.2国内外研究现状
7、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..41.3本文技术路线⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..81.4本文研究内容⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一92重载列车荷载作用下反向曲线地段有限元模型⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯112.1模型建立⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯112.2重载列车曲线地段荷载计算⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.172.2.1重载铁路线形参数设计原则⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯172.2.2曲线横向离心力的计算⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
8、⋯⋯⋯⋯⋯⋯..192.2.3曲线纵向制动力的计算⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..232.3模型验证⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯242.4本章小结⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯283重载列车荷载作用下反向曲线地段线路结构变形分析⋯⋯⋯⋯⋯⋯⋯⋯⋯293.1重载列车编组数对线路结构体系变形分析⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..293.2重载列车荷载影响范围分析⋯⋯
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