复杂地质条件下隧道内合成轨枕式无砟轨道结构分析

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1、西南交通大学硕士研究生学位论文．第1I页AbstractTheDali-Ruilirailwaytunnelpassesthroughtheseriousgeologicaldiseaseplace-''threehighfouractive”，whichexiststheinfluencesofearthquake，water,spatialconstraint，longtunnelmaintenanceworkandotherfactors，thetrackstructureproperlyad

2、optsthetrackthatfeaturesassemblingtype，resistancetoerosion，unitformunballastedtrack．Byanalyzingstructuralcharacteristicsofvariousunballastedtrack,theDali—Ruilirailwayshouldadoptcompositesleeperunballastedtrack,theverticalstressanalysismodelofthetrackWa

3、sestablished,andthenbyusingfiniteelementthestructurestresscharacteristicsWasanalyzed，theeffectoffastener,resinmortar,bedboardsize，compositesleepersizeandotherparametersontrackstructureWasanalyzed；theboltsconnectsleepertoroadbedslab，andthestressofboltWa

4、sanalyzed，thenhavingdesignedtheboltdiameter；thesleeper’Ssupportingpatter!nWasstudiedandrelatedparameterswereoptimized；thecorrespondingconstructionprocessWasdesigned．Throughanalysisconclusionisdrawn，undertheverticalforce，rail’SmostverticaldisplacementOc

5、cursintheloadpositionalongthelinedirection，andthemorefarthedistancefromtheloadpositioninthebothsideis，themoresmalltheverticaldisplacementis；alongthesleeperlengthdirection，theverticaldisplacementandbendingmomentofthecompositesleepercomeuptothemaxinthelo

6、adposition，andthemiddlebendingmomentofcompositesleeperisverysmall，approachingzero；thefastenerhasthegreatereffectontheforceanddeformationoftrackstructure，thestiffnessandspacingoffastenertake50kN／mm，625mmproperly；theresinmortarhasthegreatereffectonthefor

7、ceanddeformationoftrackstructure，theelasticitymodulusandthicknessofresinmortarshouldtake300Mpa,30mmseparately；thebedboardwidthandthicknessaresuggestedtaking3000mm．200mmseparately；thecompositesleepersizerecommendsfor2400×200×140ram；thediameterofboltissu

8、gggestedtaking30mm．KeyWords：unballastedtrack；complexgeology；compositesleeper；resinmortar西南交通大学硕士研究生学位论文第1II页目录第1章+概述⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．1国内外高速铁路无砟轨道发展概况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．1．1国内外高速铁路发展概况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．11．1．2国内外无砟轨道发展