水泥混凝土桥桥面铺装受力机理分析

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1、重庆交通大学硕士学位论文水泥混凝土桥桥面铺装受力机理分析姓名：于颖申请学位级别：硕士专业：桥梁与隧道工程指导教师：魏建明20080401AbstractBridgedeckpavementisaspecialpavementstructure，whichwillnotonlyprotectthebridgefromdamagebutalsoactasapavementstructurefortraffic．Howtodesignappropriatebridgedeckpavementstruc

2、tureandthicknessisveryimportantforimprovingbridgedeckpavement’Sservicelifetimeandquality．Becausethemechanicalmodeofbridgedeckpavementisdifferentfromthatoftheusualpavement,thecalculationmethodforpavementCannotrevealtheactualstressstateofbridgedeckpave

3、ment．Inordertoprovideatheoreticbasisforthebridgesystemdesignandtoimprovethestressdistributionandtoprolongtheperformancetermofthebridgedeckpavement，themechanicalpropertiesofthebridgedeckpavementarestudiedunder．Inthispaper,thecausesofthedamagesareanaly

4、zedaccordinghetothemainfailuretypesofbridgedeckpavementaftermeticulouscensus．Basedonthefiniteelementmethod，theaxis-symmetrymodelissimulatedtoanalyzetheeffectsofinterfaceconditions，loadmagnitudeandotherparametersonbridgedeckpavement．Forasphaltconcrete

5、pavement，itmainlyanalyzestheinterfaceshearstressandinterfacenormalpullingstress．Bycalculatingtheproblemsofbridgedeckpavementwimdifferentthicknessanddifferentmodulesofasphaltpavement，theinfluencesofdifferentparametersofbridgedeckpavementonthestressesa

6、ndsurfacedeflectionofthebridgedeckpavementarecarriedout．Theresultsprovideatheoreticalreferenceforchoosingrationalofthebridgedeckpavement．Thispaperuseselasticmufti—layertheorytodetailedlyanalyzethestressindifferentinterfaceconditionsbetweenasphaltpave

7、mentandconcretelayer,thusfindingthegenerallawofthestress．Also，thispaperhasstudiedthewaterproofmembraneonbridgedeckswithnumericalmodeling．Itcalculatesthestressesofbridgedeckpavement、析Ⅱldifferentthicknessanddifferentmodulesofwaterproofmembrane．Theresul

8、tsindicatethattheconditionofthebondingstructureisakeyfactortoguaranteethecredibilityofthebridgedeckpavement．Theoverloadconditionsthroughincreasetheverticalloadvalue．Thenmaketheconclusionthattheoverloadisanabmptionactonthepavement．Thehorizontalloadist