資源描述：
《土木工程專業(yè)畢業(yè)設(shè)計(jì)外文文獻(xiàn)及翻譯》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在教育資源-天天文庫。
1、英文原文：RehabilitationofrectangularsimplysupportedRCbeamswithsheardeficienciesusingCFRPcompositesAhmedKhalifaa,*,AntonioNannibaDepartmentofStructuralEngineering,UniversityofAlexandria,Alexandria21544,EgyptbDepartmentofCivilEngineering,UniversityofMissouriatRolla,Rolla,MO65409,USAReceived28April199
2、9;receivedinrevisedform30October2001;accepted10January2002AbstractThepresentstudyexaminestheshearperformanceandmodesoffailureofrectangularsimplysupportedreinforcedconcrete(RC)beamsdesignedwithsheardeficiencies.Thesememberswerestrengthenedwithexternallybondedcarbonfiberreinforcedpolymer(CFRP)she
3、etsandevaluatedinthelaboratory.Theexperimentalprogramconsistedoftwelvefull-scaleRCbeamstestedtofailinshear.Thevariablesinvestigatedwithinthisprogramincludedsteelstirrups,andtheshearspan-to-effectivedepthratio,aswellasamountanddistributionofCFRP.Theexperimentalresultsindicatedthatthecontribution
4、ofexternallybondedCFRPtotheshearcapacitywassignificant.Theshearcapacitywasalsoshowntobedependentuponthevariablesinvestigated.Testresultswereusedtovalidateasheardesignapproach,whichshowedconservativeandacceptablepredictions.2002ElsevierScienceLtd.Allrightsreserved.Keywords:Rehabilitation;Shear;C
5、arbonfiberreinforcedpolymer1.IntroductionFiberreinforcedpolymer(FRP)compositesystems,composedoffibersembeddedinapolymericmatrix,canbeusedforshearstrengtheningofreinforcedcon-crete(RC)members[1–7].ManyexistingRCbeamsaredeficientandinneedofstrengthening.TheshearfailureofanRCbeamisclearlydifferent
6、fromitsflexuralfailure.Inshear,thebeamfailssuddenlywithoutsufficientwarninganddiagonalshearcracksareconsid-erablywiderthantheflexuralcracks[8].Theobjectivesofthisprogramwereto:1.InvestigateperformanceandmodeoffailureofsimplysupportedrectangularRCbeamswithsheardeficien-ciesafterstrengtheningwith
7、externallybondedCFRPsheets.2.Addressthefactorsthatinfluenceshearcapacityofstrengthenedbeamssuchas:-25-steelstirrups,shearspan-to-effectivedepthratio(a/dratio),andamountanddistributionofCFRP.3.Increasetheexperimentaldatabaseonshear
