重载铁路列车荷载作用下桥上曲线动力响应分析

《重载铁路列车荷载作用下桥上曲线动力响应分析》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：Whenheavyhaulrailwaypassthroughthecomplexterrainarea，tomeettherequirementsoflinepositioncontrol，alargeofcurvesaresetontheviaduct．Themechanicalpropertyofviaductcurvesundertheactionoftrainisvitalforcircuitdesign．Dynamicresponseofthevi

2、aductcurvesunderthetrainloadisanalyzedbyusingthetheoreticalmodel．珏erangeofinfluenceofcBrvesectionundertraindynamicactionhasbeenconfmnedintheresearch．Themainresearchresultsareasfollows：(1)Arelativelycompletedynamicanalysismodelofviaductcurvelocationisestablished

3、．Therail，sleeper，ballastbedandbridgevibrationcharacteristicsaretakenintoaccountinthemodel．T11estructuralnaturalvibrationofcurvelocationisanalyzed．Andthemodelisverifiedbyrelevanttestdata．(2)Underthecentrifugalforceofcurve，thelateraldynamicofviaductcurvelocations

4、howsthat：Thenumberofmarshalinghasnoeffectontheamplitudeandscopeoflateraldynamicresponseintheviaductcurvelocationwhenitisgreaterthan4carriages．Theamplitudeoflateraldynamicresponseincreaseswiththespeed。notasthescope．Whenthetrainpassesthroughcurves，thedynamicrespo

5、nsewhichiscausedbycentrifugalforcehasanimpactontheadjacentbridgespanofthetrainoperationposition．(3)Undertheaxleload，theverticaldynamicofviaductcurvelocationshowsthat：Thenumberofmarshalinghasnoeffectontheamplitudeandscopeofverticaldynamicresponseintheviaductcurv

6、elocationwhenitisgreaterthan3carriages。Theamplitudeofverticaldynamicresponseincreases埘t11thespeed，notasthescope．Whenthetrainpassesthroughcurves．thedynamicresponsewhichiscausedbyaxleloadhasanimpactontheadjacentbridgespan．KEYWORDS：heavyhaulrailway；curveonbridge；d

7、ynamicresponse；influencefactorsCI．ASSNO：IJ2】3万方数据目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一vABSTRACT⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯vii1绪{仑⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．11．1重载铁路概况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．11．1．1国外重载铁路的发展⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯I1．1．2我国重载铁

8、路的发展⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯21．2国内外研究现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．31．2．1车桥动力作用研究⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯31．2．2曲线地段桥梁动力响应研究⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯51．3本文研究内容⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一62重载铁路桥上曲线地段动力分析模型⋯⋯⋯⋯⋯