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碾压混凝土坝服役性能安全监控理论研究进展.docx

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碾压混凝土坝服役性能安全监控理论研究进展 Title:ResearchProgressonMonitoringthePerformanceandSafetyofRoller-CompactedConcreteDams Abstract: Reservoirsplayacrucialroleinwaterresourcemanagement,floodcontrol,andhydroelectricpowergeneration.Roller-compactedconcrete(RCC)damshavegainedpopularityduetotheireconomicandenvironmentalbenefits.However,ensuringthelong-termperformanceandsafetyofRCCdamsremainsasignificantconcern.ThispaperaimstoprovideanoverviewoftheresearchprogressinmonitoringtheperformanceandsafetyofRCCdams. Introduction: Roller-compactedconcrete(RCC)damshaveemergedasacost-effectivealternativetoconventionalconcretedams.Thesedamsareconstructedbycompactingamixtureofaggregate,cement,andwaterwiththehelpofheavyrollers.AlthoughRCCdamsofferseveraladvantages,suchasrapidconstructionandreducedenvironmentalimpacts,monitoringtheirperformanceandsafetythroughouttheirservicelifeisessentialtoensuretheirlong-termstructuralintegrity. 1.MaterialPropertiesandConstructionTechniques: ThesuccessfuloperationofaRCCdamlargelydependsonthechoiceofmaterialsandconstructiontechniques.Researcheffortshavefocusedondeterminingtheoptimalmixdesign,evaluatingtherheologicalproperties,andexaminingthelong-termdurabilityofRCC.Additionally,studieshaveinvestigatedtheinfluenceofconstructiontechniques,includingcompactionmethods,layerthicknesses,andcuringconditions,onthemechanicalperformanceofRCCdams. 2.StructuralHealthMonitoring: Structuralhealthmonitoring(SHM)systemshavegainedsignificantattentionasefficienttoolsforassessingtheperformanceandsafetyofcivilstructures.ResearchershavedevelopedvariousSHMtechniquestomonitorthestructuralhealthofRCCdamsinreal-time.Thesetechniquesincludevibration-basedmethods,acousticemission,fiberopticsensors,andwirelesssensornetworks.Continuousmonitoringofdeformation,cracking,andcorrosioncanprovideearlywarningsofpotentialstructuralissuesandenabletimelymaintenanceinterventions. 3.EnvironmentalMonitoring: ThebehaviorofRCCdamsisstronglyinfluencedbythesurroundingenvironment,includingtemperature,humidity,andw