軟土蠕變特性及路基工后沉降預(yù)測研究.pdf

1、分類號UDC學(xué)校代碼10497學(xué)號一IQ盛972071905劣催括聲大穿學(xué)位論文題目絲土盆變持性互路基工后沉降預(yù)測研究文CreepCharacteristiesofSoft5011andPost一Cpnstruction目PredictedResearchonRoadFoundation英題研究生姓名熊燕文、二.‘，l二姓名一凰魚久一職稱一邀握二一學(xué)位一笠生一骼教師~一曰一，”曰’一‘件一單位名稱土木工程與建筑學(xué)院郵編430盯。姓名劉新

2、喜職稱副教授學(xué)位博士單位名稱土木工程與建筑學(xué)院郵編430070申請學(xué)位級別工學(xué)碩士學(xué)科專業(yè)名稱巖土工程論文提交日期2010年4月論文答辯日期2010年5月學(xué)位授予單位學(xué)位授予日期答辯委員會主席評閱人飛‘吟2010年4月21日ABSTRACTThedefmationundertheeonstantstressgrowthwiththetime15theereePofsoftsoil.Astheroleofsoft5011ereeP，itw

3、illinevitablyProdueeexcessivesettlementwhenbuildingConstruetiononsoft5011，thisPaPercombinedwiththeTransPortationProjeets(2008CDB369)“而erostruetureeffeetsinConsolidationProeessofsoftclayMonitingofFreeway，，KeyProjeetofMini

4、stryofEdueationProjeet(109110)“而erostruetureeffeetsinConsolidationProeessandsettlementanalysisofsoftelay，，InHubeiProvinee，reliedontreatmentofsoftelayfoundationinWuhantoYingshanexPressway.Soft5011ereePCharacteristicandSet

5、tlementLawintyPiealseetionsystematiestudiedbasedonlaboratoryexPerimentandin一situobservation。Meanwhile，thesettlementaftertheissuewasexPlored，numeriealsimulationwasusedbyABAQUSintheaetualProjeet.AndeomParedthesimulationres

6、ultsthemeasuredresults，thefollowingmaineontentsandeonelusionsasfollow:First，Soft5011ereePCharacteristieAnalysisedbasedonlaboratoryexPerimentandin一situobservation，Soft5011ereePconstitutivemodelandealeulationParameterswasd

7、eterlnined。Thevariationofsurfacesettlement，lateraldisPlacement，PorewaterPressureandlayeredsettlementwasanalyzedandsulnlnarized.Seeond，thenumeriealsimulationwasusedbyABAQUSintheactualProjeet，thCllumCriCalSimlllatiollfCSll

8、ltSSh0WCdthat:(1)VertiealdisPlacementandlateraldisPlacementwereealculatedbyextendedD一PmodelaPProachtothemeasureddata，thefillingsPeedhasgreatinflueneeonthesettlementProeess，thesettlementsPeedwillhigherduringfillingtimebut

9、smallerduringtheloadtime.Theexcessporewaterpressurechangeasgrowth一dissiPation一growth一dissiPationanddeereasedinthewholeProcess0ButlargergrowthwillbeaPPeararound200days.(2)爪水ingcreePofSoftClayintoaccount，thentoPredietPosts

10、ettlement，iteouldbefoundthatresultsPredictedwerelargerthanresultsealeulatedbytraditonalmethod.GreatertheheightofoverloadingPrePressonsoftroadfoundationwas，biggerthesurfacesettlementduringPeriodofPreloadingwouldbe.Withina