混凝土框架節(jié)點梁端破壞加固試驗研究.pdf

1、武漢理工大學(xué)碩士學(xué)位論文混凝土框架節(jié)點梁端破壞加固試驗研究姓名：方明新申請學(xué)位級別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：楊志勇201206武漢理工大學(xué)碩士學(xué)位論文AbstractTheiointofthereinforcedconcreteframestructureistheintersectionofbeamandcolumn，includingthejointcoreandbeamendsandcolumnendsThestressofs

2、tructuretostandiScomplexTheVshouldwithstandthebendingmomentandshearcomingfrombeamsandcolumns，playingtheroleofpassingandtheallocatinginternalforcesandmaintainingintegrityofstructureJointsaretheweakestpartsoftheframestruct

3、ureTherearemanycasesthatearthquakeresultsinthelOSSofbearingcapacityevencollapsingoftheentirestructureduetothedestructionoftheioints啪％thejointWaSdesignedincorrectly，constructedwithunreasonablemethodsortheintensityofseismi

4、cdefenceintheregionofthestructurehaSraised，theseistoicperformanceofthebearingcapacityductility，stiffnessofthestructuremaydonotmeettherequirementsofspecificationTheseismicperformanceCanbeimprovedthroughreinforcementInthis

5、PapertheseismicperformanceofreinforeedconcreteframeflatcrOSSshapedjointsareanalysedsystematicallythroughexperiment，andtheeffectofstrengtheninginjuredjointswithcarbonfiberarestudiedFourjointsareloadedbylOWcyclicloadinthee

6、xperimerittostudytheseismicperformanceofthemandstructuralperformanceparameterswasanalysedsystematicallyTheexperimentWassimulatedwitllANSYSfinallyonthetestThecontentincludesthefollowingaSpects：(1)thecommonseveralmethodsof

7、structuralreinforcementareintroducedbrieflyincludingtheirresearchachievementsandrespectiveadvantagesanddisadvantages；(2)Thewholeschemeoftheexperimentdesigned，loadsystems，andthepurposeoftheexperimeritwaSintroducedindetail

8、；(3)Thecrackingload，ultimateload，ultimatedisplacement，ductility，stiffnessdegradation，capacityofenergydissipationbeforeandafterstrengthenedareanalysedaccordingtothedataoftheexperimerit，andtherelevantconclusionsaregained；(

9、4)numericalanalysismodelsarebuiltwithfiniteelementsoftwareANSYSonthebasisoftheexperiment，thentheconclusionsgainedbyANSlYSarecontrastedwiththeexperimentThemainconclusionsfromtheexperimeritarefollowing：(1)Theyielddisplacem

10、entmaximumdisplacementinthecolumnendsofinjuredspecimensafterstrengthenedhasraisedinvaryingdegreesButthecarryingcapacityisnotimprovedsignificantlyandductilityandstiffnessremainedunchangedReinforcementhasgreatlyimprovedthe

11、performanceofstrengthdegradation，stifinessdegradationandenergyconsumption(2)TheaxialpressureratiohassomeeffectsontheseismicbehaviorofthespecimenbeforeandafterreinforcementWiththeaxialpressureratioincreasing，theyieldload，

12、maximumload，ultimateloadhasimprovedinvaryingdegrees，whiletheyielddisplacement，maximumdisplacementandlimitdisplacementreducedindifferentdegreesTheincreasingoftheaxialpressureratioimprovestheperformanceofstrengthdegradatio