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1、中南大學(xué)碩士學(xué)位論文既有公路下連拱隧道施工控制技術(shù)研究姓名:楊鎧申請學(xué)位級別:碩士專業(yè):建筑與土木工程指導(dǎo)教師:陽軍生鐘放平20090501ABSTRACTEngineeringpracticeoftunnelingunderexistingroadhasappearedfrequentlyinrecentyearsItisnecessarytoinvestigatetheconstructioncontralmeasuresofpro
2、tectingthenormaloperationofroadandmaintainingthesaltyoftunnelconstructionBaseontheTujingchongmultiarchtunnel,theconstructionmechanicalbehaviorofmulti—archtunnelunderexistingroadhasinvestigatedusingmethordoffieldmeasuresa
3、ngnumericalsimulationsAndtheeffectiveconstructionmeasureswereproposedThemainresearchcontentsareasfollowing:1DataoffieldmeasureofthesectionofTujiangchongmultiarchtunnelunderexsistionroadWasanalyzedAndthechangingregulariti
4、esofintemalforceanddeformationofsurroudingrockandsupportstructureandroadsettlementwereobtained2UsingFLAC3DfinitedifferencesoftwareconstructionprocessofTujiangchongmultiarchtunnelwassimulatedconsideringactualtopographyAnd
5、thepiperoofsupportonthetunnelportalsectionwassimulatedbytheshellelementTheresultswerecomparedwiththefieldmeasuredata3BasedontheanalyzingoffieldmeasuredataandnumericalsimulationofTujinagchongmulti—archtunnel,thedisplaceme
6、ntconstructionmeasuresoffortunnelunderexsitingroadwereproposedAndithasbeenapplicatedsuccessfullyinTujinagchongmultiarchtunnelconstructionKEYWORDS:multi—archtunnel,highwayconstructionmeasures,fieldmeasurement,numericalsim
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