中低速磁浮列车—桥梁系统竖向耦合振动分析

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1、西南交通大学硕士研究生学位论文第1I页车安全限值2．222mm。跨中横向加速度小于《检规》限值1．40m／s2。桥梁的刚度和动力性能均满足规范要求。此外，在5～lOkm／h速度范围内，磁浮列车的运行平稳性不如其它速度的好。建议以后多关注低速范围内悬浮控制的稳定性问题。关键词：中低速磁浮列车；竖向耦合振动；电磁力；悬浮控制器；仿真分析；冲击效应；现场试验西南交通大学硕士研究生学位论文第

2、II页AbstractFollowingourcountry’Srapidincreaseofeconomyandtheaccelerationofurba

3、nismprocess，availablespaceinthecityisbecomemuchmoreprecious．Andthepressureonthetrafficsystemsistremendousbecauseoftherapidgrowthofpopulation．Themaglevtrainwhichhasalargeclimbinggradient，smallswervingradius，lownoise，nopollutionandCanbecompatiblewithanycircumstancesisclearl

4、yoneoftheidealtrafficsystemstosolvethisprobleminthefuture．Consideringthecharacteristicsoftrafficincity,thefuturemarketofmaglevtrainsystemwillbeverybroad．Basedonthisbackground，thearticlecarryoutthestudyoncouplingvibrationoflow—speedmaglevtrain-bridgesystem．Consideringthefu

5、nctionofelectromagneticforceandtrackirregularity,asimulationanalysisprogramoflow·-speedmaglevtrain·-bridgecouplingvibrationnamedVIMTBiswrittenintheengineeringbackgroundofthelow—speedmaglevtestlineofZhuzhoulocomotivefactory．Thereliabilityoftheprogramhasbeenconfirmedbyfield

6、test．Then，withthehelpofprogramVIMTB，thedynamicresponsesofasimplysupportedbeamwith20mspanandathreespancontinuousbeamadoptedinthelow—speedmaglevtestlineofZhuzhoulocomotivefactoryisanalyzed，andthefactorsaffectingtheimpacteffectofthesimplysupportedbeambridgearealsostudied．Int

7、heend，thedynamicperformanceofthesimplysupportedbeambridgeistestedbyfieldtrial．Theconclusionsaredescribedasfollows：1．Comparedwiththefieldtestdata，thecalculationresultsofprogramVIMTBiscredible．2．Simulationresultsshowthat，thedynamicperformanceofthesimplysupportedbeambridgeme

8、etstherequirement．Maximumdeflectionandaccelerationvaluesareincreasedwiththeincreaseinspeed．Forthemaglevtrain，itsdisplacementgoesgreaterwhileitsweightisadded，anditsdynamicresponsevalueincreaseswiththeincreaseinspeed．TheairspringbetweenCarbodyandsuspensionframeplaysabigrole

9、inisolationofvibration．Andthevariationamplitudeofsuspensionclearanceincreaseswiththeincreaseinsp