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1、沈陽建筑大學碩士學位論文路基路面變形行為的有限元模擬與分析姓名：王曉光申請學位級別：碩士專業(yè)：工程力學指導教師：任德斌200903碩士研究生學位論文目錄VABSTRACTAsphaltpavementisoneoftheprimarystructuresfmainroadsinChina.Withthecontinuingrapiddevelopmentofthenationaleconomyscientifictechnologica

2、lProgress，thehighwayasphaltPavementstructuregetsmeIncreasinglywideapplication.Alongwiththeappearingfmingoftheheavyloadedtrafficinrecentyearstheprematurefailureofasphaltpavementsisbecomingmemewidespread.ConsequentlyOverlo

3、adinghasbecomeoneofthekeyfactswhichinfluencetheinserviceperfmanceofpavementsshtenthenaturallifeofpavements.maybecausedbydifferentfacts.ThispaperadoptfiniteelementanalysisprogramANSYSthetypicalappropriatesemirigidbaseasph

4、altconcretepavementstructurewasedtoestablishascalculationmodelaimattheaboveproblems，perfmanceevaluationofheavyloadedasphaltpavementinfluenceofpavementstructurematericalparametershavebeenconductedontheeticalanalysisinthis

5、thesissimulatetheactualsituationprocessingthenumericalmodelanalysis.Inthisthesisfirstlyaccdingtothemechanicalresponsesofpavementintwocyclictrafficloadswerestudied.theinfluencesontheasphaltpavementOverloadisanothermaininf

6、luencefactinjuringthepavementstructure.Itcausedroaddeflectionvaluehasincreasedwhichwillgreatlyreducetheuseofroadperfmanceshtentheusefullifeoftheroad.thebiggertheoverload，thegreaterthedestructivepoweroftheroadstructure.at

7、thesametimethechangedactersofkeyresponsesofpavementwhichconductedbytheloadswhichpreponderatedovertheallowableweightwerediscussedtoo.theseinfluenceimpactedonroadstructuretheresultsoftheanalysisshowthatthehighwaylongitudin

8、algradehadlittleinfluenceonpavementperfmance.Buttheautomobilebrakingfcehaddestructiveinfluenceonit.Thebrakingfcemergedstressconcentrationatthefrontbackedgeoftyperoundinglocation，whichgivestheasphaltPavementstructureendur

9、egreaterPressurePullstress.Althoughtheintensityofthatnotreachtothetensilestrengththecompressivestrengthoftheasphaltpavementwhichwillnotdirectlyleadtothedestructionofroadsbutlittledamagetotheroadsurfacewhencracksappeareds

10、uchstressstatewillbeconducivetotherapiddevelopmentofroadearlyinjurysothesectionofhighwayfrequentlyinjurieslateralloadespeciallyinuphill、downhillofthatofsections，theautomobilebrakingfcedamagespavementperfmanceseriously.Th

11、eresultsofthethesisshowthatheavyloadedtrafficcanbebroughtonincreasingcriticalresponsesofpavementacceleratingtheprocessofpavementdeteriationsmakingthedeteriationdegreedeeper.thestructurallayerconbinationcaninfluencepaveme

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