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季节性冻土区堤顶公路耦合冻融数值模拟研究 Title:NumericalSimulationStudyonCoupledFreeze-ThawEffectsofEmbankmentRoadsinSeasonalPermafrostRegions Abstract: Seasonalfreeze-thawprocessesinpermafrostregionsposesignificantchallengestothestabilityandperformanceofembankmentroads.Thisstudyaimstoinvestigatethecoupledfreeze-thaweffectsonembankmentroadsinseasonalpermafrostregionsthroughnumericalsimulation.Acomprehensivenumericalmodelisdevelopedtosimulatethethermalandmechanicalbehaviorsoftheembankmentroadsconsideringfreeze-thawprocesses.Factorssuchasclimatechange,soilproperties,androadstructureareincorporatedintothemodel.Theresultsprovideinsightsintothebehaviorandperformanceofembankmentroadsinseasonalpermafrostregions,facilitatingthedesignandmaintenanceofinfrastructureincoldregions. 1.Introduction 1.1Background 1.2Objectives 1.3Significance 2.LiteratureReview 2.1SeasonalFreeze-ThawProcessesinPermafrostRegions 2.2EffectsofFreeze-ThawonEmbankmentRoads 2.3NumericalSimulationStudies 3.Methodology 3.1DevelopmentoftheNumericalModel 3.2IncorporationofClimateChangeFactors 3.3SoilPropertiesandRoadStructureConsiderations 4.ResultsandDiscussion 4.1ThermalBehavioroftheEmbankmentRoads 4.2MechanicalResponseoftheEmbankmentRoads 4.3InfluenceofClimateChangeonFreeze-ThawEffects 4.4SensitivityAnalysisofSoilPropertiesandRoadStructure 5.CaseStudy 5.1DescriptionoftheStudyArea 5.2ExperimentalSetupandDataCollection 5.3ComparisonofFieldDatawithSimulationResults 6.ImplicationsandRecommendations 6.1DesignandMaintenanceGuidelinesforEmbankmentRoads 6.2FutureResearchDirections 7.Conclusion References Introduction: Background: Seasonalfreeze-thawprocessesinpermafrostregionspresentconsiderablechallengestothestabilityandperformanceofembankmentroads.Thefreezingandthawingofsoilcancausesignificantchangesinsoilproperties,leadingtodetrimentaleffectsonroadinfrastructure.Theunderstandingofthesecoupledfreeze-thaweffectsiscrucialfordesigningandmaintainingembankmentroadsincoldregionseffectively. Objectives: Theobjectiveofthisstudyistoinvesti