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一种提高新旧混凝土界面传力设计方法及应用.docx

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一种提高新旧混凝土界面传力设计方法及应用为题目，写不少于1200的论文 Abstract Theinterfacebetweennewandoldconcreteisacriticalareaforreinforcedconcretestructures,especiallyfortherehabilitationandstrengtheningofexistingstructures.Inthispaper,amethodforimprovingtheinterfacetransferstrengthbetweennewandoldconcreteisproposedandapplied.Thedesignmethodtakesintoaccountthepropertiesofboththenewandoldconcrete,aswellastheinterfacecharacteristics,andisbasedonexperimentalstudiesandnumericalsimulations.Theproposedmethodisshowntobeeffectiveinimprovingthebondstrengthbetweennewandoldconcrete,andcanbeusedintherehabilitationandstrengtheningofexistingstructures. Introduction Rehabilitationandstrengtheningofexistingconcretestructureshavebecomeincreasinglyimportantinrecentyearsduetotheagingofinfrastructureandchangesintheintendeduseofexistingstructures.Therehabilitationofconcretestructuresofteninvolvestheconnectionofnewconcretetotheexistingconcrete,creatinganinterfacezonethatispronetocrackinganddelamination.Theinterfacezoneisacriticalareafortheoverallstrengthandstabilityofthestructure,andthereforerequiresspecialattentioninitsdesignandconstruction. Thetransferofforcesbetweennewandoldconcreteisessentialtoensurethestructuralintegrityofthereinforcedconcretestructure.Thebondstrengthbetweennewandoldconcreteisprimarilyinfluencedbythepropertiesofthetwomaterials,thesurfacepreparationoftheoldconcrete,thecuringcondition,andtheuseofbondingagents.Previousstudieshaveshownthatthebondstrengthbetweennewandoldconcreteisoftenlowerthanthestrengthoftheconcreteitself,leadingtoprematurefailureofthereinforcedconcretestructure.Therefore,itiscriticaltodevelopeffectivedesignmethodstoimprovethebondstrengthbetweennewandoldconcrete. Objective Theobjectiveofthispaperistoproposeadesignmethodforimprovingthebondstrengthbetweennewandoldconcrete.Theproposeddesignmethodtakesintoaccountthepropertiesofboththenewandoldconcrete,aswellastheinterfacecharacteristics,andisbasedonexperimentalstudiesandnumericalsimulations.Thispaperalsopresentstheapplicationsofthepro