磁浮连续轨道梁温度变形及对振动的影响

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1、上海交通大学硕士学位论文磁浮连续轨道梁温度变形及对振动的影响姓名：张庆福申请学位级别：硕士专业：结构工程指导教师：滕念管20081201上海交通大学硕士学位论文摘要计，优化提供参考。关键词：磁浮交通双跨连续轨道梁，温度变形，耦合振动，动力特性6上海交通大学位论文ABSTRACTTHETHERMALDEFORMATIONOFCONTINUOUSMAGLEVGUIDEWAYANDINFLUENCEONVIBRATIONABSTRACTThemaglevguidewayisoneofthemaindeterminingfactorsofthetrafficsafety

2、andcomfortasakeycomponentofthemaglevsystem.Thedeformationoftheguidewayduetotheatmosphericenvironmentandthedynamiccharacteristicsofthedeformedbeamwhilethevehiclepassesarestudiedinthisthesis.Theanalyticalresultofbeam’sthermaldeformationprimarilydependsontheselectionofthethermalgradient

3、modeandthethermaldesignvalue.Differentthermalgradientmodesareadoptedindifferentcountries.Nowadays,theresearchresultsofthermaleffectontheboxgirdersaremainlytargetedtohighwaysandrailways,buttheseriesofthemaglevboxgirdersareverydifferentinthethesis.Thethermalactionmakestheguidewayproduc

4、ingdeformation,whichwillaggravatevibrationofvehicle-guidewaysystem.Soitisnecessarytododeeplyresearchonthermaldeformationanditsinfluenceonvehicle-guidewayvibration.Themainconclusionsofthethesisaredescribedasfollows:(1)ThethermaleffectonSeriesofguidewaysectionwithdifferentheightisanaly

5、sedthroughbuildingtheANSYSanalyticalmodel.Studyindicatesthatthethermaldeformationofguidewayincreaseswiththeheightofsection.(2)Thethermaldeformationofthecontinuousguidewayisanalysed7上海交通大学位论文ABSTRACTthroughthethermaleffect.Itshowsthethermaldefomationofcontinuousmaglevguidewaysatisfies

6、withtherequirement.(3)ThecouplingvibrationmodelsimulatingShanghaimaglevlineisbuilt,andthedynamicalcharacterofthedouble-spancontinuousguidewayisworkedoutbythecalculationalprograminFORTRAN90.AnalysisindicatesthedynamicalcharacterofguidewayinShanghailineisingoodconditionatpresent.Theveh

7、icle-guidewayinteractionmodelconsideringtheinfluenceoftemperaturedeformationinthedissertationcanbereferredintheguidewaydesign.KEYWORDS：Double-spancontinuousmaglevguideway,Thermaldeformation,Coupledvibration,Dynamicalcharacter8上海交通大学学位论文原创性声明本人郑重声明：所呈交的学位论文，是本人在导师的指导下，独立进行研究工作所取得的成果。除

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