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曲线盾构隧道长距离下穿既有隧道变形影响分析.docx

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曲线盾构隧道长距离下穿既有隧道变形影响分析 Title:AnalysisofDeformationEffectsonLong-DistanceCross-PassageofExistingTunnelsusingCurvedShieldTunneling Abstract: Withincreasingurbanizationandtransportationdemands,theconstructionofnewtunnelsunderneathexistingtunnelshasbecomeacommonpractice.Theselong-distancecross-passagetunnels,constructedusingcurvedshieldtunneling,oftenposechallengesduetothepotentialdeformationeffectsontheexistingtunnels.Thispaperaimstoanalyzeandevaluatetheimpactofdeformationonexistingtunnelsduringtheconstructionofcurvedshieldtunnels. 1.Introduction: 1.1Background 1.2Objectiveofthestudy 1.3Scopeofthestudy 2.LiteratureReview: 2.1Overviewofcurvedshieldtunnelingtechnique 2.2Deformationeffectsonexistingtunnels 2.3Previousstudiesondeformationmonitoringandanalysis 2.4Keyfindingsfromexistingliterature 3.Methodology: 3.1Selectionofcasestudytunnels 3.2Collectionoffielddata 3.3Structuralanalysismethodsused 3.4Comparisonofdifferentanalysisapproaches 4.DeformationEffectsonExistingTunnels: 4.1Analysisofgroundsettlement 4.2Evaluationofwalldisplacements 4.3Assessmentofstressredistribution 4.4Identificationofcriticalzonesofdeformation 5.CaseStudy: 5.1Descriptionoftheselectedproject 5.2Monitoringsysteminstallationanddatacollection 5.3Analysisandinterpretationofthecollecteddata 5.4Assessmentofdeformationeffectsonexistingtunnels 6.ResultsandDiscussion: 6.1Quantitativeanalysisofdeformationeffects 6.2Comparisonwithdesignspecificationsandstandards 6.3Identificationofpotentialmitigationmeasures 6.4Discussionoflimitationsanduncertaintiesintheanalysis 7.Conclusion: 7.1Summaryofthestudyfindings 7.2Recommendationsforfutureresearch 7.3Practicalimplicationsandsuggestionsfortunnelingpractitioners 8.References Inthispaper,acomprehensiveanalysisofthedeformationeffectsonexistingtunnelsduringtheconstructionoflong-distancecross-passagetunnelsusingcurvedshieldtunnelingispresented.Themethodologyinvolvestheselectionofcasestudytunnels,collectionoffielddata,andapplicationofstructuralanalysismethods.Theresultsobt