拱桥上纵连底座双块式无砟轨道结构设计与纵向力分析

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1、西南交通大学硕士研究生学位论文第1f页AbstractThelongitudinalforceofballastlesstrackonbridgeisverycomplex．Thereisnoballastlesstrackconstructedonthearchbridgeathomeandabroad．Soitissignificanttocarryoutstructuraldesignandstudyingoflongitudinalforceofballastlesstrackonarchbridge，analyzewhichballastlesst

2、rackisfittobeconstructedonlong．spanarchbridge．ToexploretheapplicationofballastlesstrackwhichmakeUSeofcontinuousbedplateonthearchbridge，thispapersuggestfourkindsoflongitudinallybed．plateballastlesstrackbasedonthearchbridgeinBciPanjiangwhicharebothtunnelsintheendofbridge．Theyarecombi

3、nedwiththefeatureofCRTSIbi．bloekTrackandCRTSIIslabtrack．Theforceisseparatedbetweenbeamandtrackandthereinforcedslabisin—situ．Thefirstsuggestionis"continuouslyreinforcedslabintegratedwithcontinuousbedplate”，thesecondsuggestionis¨continuouslyreinforcedslabisolatedwithcontinuousbedplat

4、e”，thethirdsuggestionis”segmentedreinforcedslabintegrated研tllcontinuousbedplate”，thefourthsuggestionis”segmentedreinforeedslabisolatedwi也continuousbedplate”．Thefiniteelementmodelofrailway-slab-beam-bridgepierwhichhasconsideredrailwaydouble．1ineiscreated．Thelongitudinalforceofbi-blo

5、ckballastlesstrackonarchbridgewhichhasfourkindsofsuggestionsisanalyzedintemperatureforce，deflectionforce，brakingforce，ruptureforceandbrokenplateforce．Bythesecalculations，weknowthatthefourthsuggestionisbetter．Andthevorticaldisplacementofballastlesstrackwhichiscausedbydifferentpierhe

6、ightisanalyzed．Thetransitionzonebetweenbridgeandtunnelisre-designed．Thecontinuouslyreinforcedslabandcontinuousbedplateisanchored15metersfromthetunnel．ThemutationlongitudinalforceinthetransitionzoneiSeliminatedandtheforceofwholestructureismorereasonable．Thefrictioncoefficientofslide

7、layerandextendstiffnessofballastlesstrackwhicharefactorsforaffectingthelongitudinalforceofballastlesstrackareanalyzed．keywords：ballastlesstrack；archbridge；structuraldesign；longitudinalforce西南交通大学硕士研究生学位论文第1fI页目录第1章概述⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯。11．1国内外高速铁路发展概述⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯

8、⋯⋯．11．2国内外无砟轨道应用与发展概况⋯⋯⋯⋯⋯