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1、华中科技大学硕士学位论文正交异性钢桥面沥青混凝土铺装的力学行为分析姓名：黄贤顺申请学位级别：硕士专业：道路与铁道工程指导教师：资建民20060426AbstractInrecentdecade,withtherapiddevelopmentoftransportationenterprise,manylong-spanbridgeshavebeenconstructedorconstructing,fordeceasingloadandincreasingthespan,theorthotropicsteeldeckisgenera
2、llyappliedforthelong-spansteelbridge.Astheexcellentpavementperformanceofasphaltmixture,itisextensivelyusedformanylong-spanorthotropicsteelbridgesdecksurfacing,comparedwiththegeneralroad,bridgedecksurfacinghasspecialstructures,climateandtemperaturehavegreatinfluenceonit
3、slocationanddamagesiteasily.Thetheoryandmethodofsteelbridgesdecksurfacingdesignisnotgenerallyandeffectivelysolveduntilnow,soitisnecessarytoresearchkeytechnologyoflong-spansteelbridgesdecksurfacingdesign,thosehaveimportantsignificationtothedevelopmentofthescienceresearc
4、handthepracticeofengineering.Thisdissertationfirstlyintroducestheconstructionconditionandsteelbridgesdecksurfacingoflong-spansteelbridges,andinvestigatesandanalyzesthemainfailuretypesoflong-spansteelbridgesdecksurfacing,thequestionsnecessarilyresearchedofsteelbridgesde
5、cksurfacingisproposed,accordingtothestudyconditionsandcurrentquestionsoflong-spansteelbridgesdecksurfacing,thestudycontentisproposedinthisdissertation.SecondlythebasistheoryandhypothesisofFiniteElementMethod(FEM)computingforsteelbridgesdecksurfacingareproposed,accordin
6、gtothegeneralparametersofsteel-boxjoistdeckandsurfacingstructureoflong-spansteelbridgesinChina,FEMmodelsareestablishedandcomputedbycurrentFEMANSYSsoftware.Basedonanalysisthemechanicspropertyanddamagerulesofthesurfacingundertheload,thelocationofcriticalloadisdetermined,
7、theruleofstressandstainonorthotropicsteelbridgesurfacingisstudiedandindexesofdesignisadvanced，therelationsbetweeneachmechanicalindexandtheelasticmodulusofasphaltmixturesurfacingmaterialsareanalyzed.Accordingtothemainfailuretypesnecessarilycontrolledofsteelbridgesdecksu
8、rfacing,theindexsystemofsteelIIbridgesdecksurfacingstructuredesignisproposed.Theconclusionsofthisdissertationcanbeuse
