大跨径无背索钢-混叠合梁斜塔斜拉桥桥面铺装受力特性研究

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1、学校代号：10536学号；03054008密级：长沙理工大学硕士学位论文Y5175781大跨径无背索钢一混叠合梁斜塔斜拉桥桥面铺装受力特性研究学位申请人姓名韭措至导师姓名及职称童盛垄整毽型d!蘧副塾毽培养单位篮进堡工盔生专业名称．拯狴皇睦重王猩论文提交日期2QQi生!旦论文答辩B期2QQ§生5目目答辩委员会主席至箜猃ABSTRACTInChina,thedamagetothedeckpavementoflong-spanbridgehasbecomeamoreandmoreseriousproblem．EventhouI曲thepave

2、mentiswellconstructed，thereexistalotofdestructions．whichaffectthetrafficsafetyandbridgedurability,wimtheinfluencesofnaturalenvironmentandtrafficloadsHowever,duringbridged∞ignandcurrentrelatedcode,itisstillpayinsufficientattentiontothesystemanalysisofpavementstresschamcIe

3、ristic,becausethecun'entrelatedtheoryresearchesalladopttheapproximatemodelofcircleorrectangleuniformload．Basedonthementionedabove，theissueofbfidgedeckpavementhasbecomeakeyengineeringtechnologyintheconstructionoflong-spanbridge．Thisdissertation,whichprovidestherationalefo

4、rpavementdesignandfurtherresearchonthepavementdestructionmechanics，mainlymakesastudyofthestresslawofdeckpavementinMeehanies．Ithasgreatimportanttheoreticalmeaningandappliedvalue．Thisdissertationanalyzesthepavementstresscharaaeristicoflong·spaninclinedtowercable-stayedbrid

5、geofsteel-concretecompositeboxgirderwithoutbackstay,usinganalytichierarchyprocess(AHP)fi-omwholetopartItsummarizesthemaindestructiontypeofthedeckpavementandintroducesthetensilesmmgthindexofpavementandtheinter-layershearmengthindexbetweenpavementanddeckslab．Usingfiniteele

6、menttheoryofcontactstressanalysisandfiniteelementmodelwhichisestablishedbyfiniteelementsoftwareANSYSandiscontactedbythefrontandbackcarwheel，thevalueofcontactStresSandregularitiesofdistributioncanbegained．Withthebendingmomentofthegirderasguidepostsofthepavementdestruction

7、，themostunfavorableplace，whilecarsloadsalongthebridgemachinedirectionanditscorrespondingboundarycondition，isgotbycarryingonstressanalysisof2Dwholebridgetothelong-spancable-stayedbridge，Byestablishingthefiniteelementmodelofgirdersegmentof3Dpart，itdoesfinepartanalysistothe

8、pavementstresscharacteristic．111emostunfavorableplaceofloadofpavementStresscanbeconfirmedanditsstateofs