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

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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⋯⋯