Cyclic response of masonry infilled RC frames: Experimental results and simplified modeling
- Authors: CAVALERI, L; DI TRAPANI, F.
- Publication year: 2014
- Type: Articolo in rivista (Articolo in rivista)
- OA Link: http://hdl.handle.net/10447/101291
Abstract
The recentlargeinterestinnonlinearseismicanalysismethods,staticanddynamic,hasrequiredproper strategiesofmodelingbasedonreliable,andatthesametimeeasytouse,constitutivelawsforthe structural elements.Regardingthebehaviorofframedstructures,specialattentionhastobedevotedto infills becauseofthekeyroletheyplayinmodifyingoverallstiffness,strengthandductilityunder seismic excitation.Pointingouttheattentiononthistopicthepaperdiscussesacriteriaformodelingthe structural behaviorofinfills basedonamacromodelingapproach,thatistosayonthesubstitutionof infills withdiagonalpinjointedstruts.Ishereshownhowmultilinearplasticlinkelementsgoverned by ahystereticPivotmodel,availableindifferentFEMcodes,canbeappropriatelyusedtomodelthe equivalentstrutstoperformlinearornonlinearanalyses.Inordertoenlargeexperimentalknowledgeon cyclicbehaviorofinfilled framesstructuresandasreferencefordevelopingtheabovementioned modelingstrategy,anexperimentalcampaignonsingle-storey,single-bay,fullyinfilledframeswithdifferent kindsofmasonryandsubjectedtolateralcyclicalloads,wascarriedout,andsomeothersavailableinthe literaturearereferredto.ValidationofPivotmodeling approachwascarriedoutcomparingexperimental resultsandcomputersimulationsoftheexperimentaltests.Inthepaperhysteresisparametersvalues calibratingPivotlawarealsogivenforinvolvedmasonryinfills typologiesandsomeproposalsforcorrelation betweenstrengthandstiffnessofinfilledframesandofmasonryinfillsareprovidedasatoolforthequick calibrationofthePivotmodelinpracticalapplications.