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EnglishThesteelConcentricBracedFrame(CBF)isapopularstructuraltypeforbuildingsinseismicareas.Infact,itcanconvenientlyprovidethebuildingwithlargestrengthandstiffness.Furthermore,thesimplicityoffabricationthatderivesfromtheuseofshearconnectionsbetweenbeamsandcolumnsappealstostructuraldesigners.Unfortunately,thedissipationcapacityofsteelbracesislimitedandthestructuraltypeislowredundantandthuspronetostoreycollapsemechanisms.ToimprovetheseismicperformanceoftheCBFdouble-stageBRBs(DYBs)couldbeusedinsteadofconventionalsteelbraces.TheDYBexhibitshighdissipativeandstablecyclicresponseand,ifinsertedintoasteelframe,promotethespreadofdamageowingtotheshapeofitshysteresisloop.Despiteitsqualities,inliteraturetherearenodesignmethodsthatallowitsuse.Hence,inthispaper,adesignmethodforsteelframeswithDYBsisformulatedincompliancewiththeprinciplesoftheEuropeanseismiccode.ThebehaviourfactorqiscalibratedtomeettheperformanceobjectivesofEurocode8.Theca-librationisperformedbynonlineardynamicanalysisconductedwithOpenSeeson75frameswithdifferentfeatures.ThenumericalmodeliscalibratedontheresultsoftheexperimentaltestsperformedbyPanandhisco-workersatTsinghuaUniversityinBeijing(China).ThededucedresultsconfirmtheeffectivenessoftheframewithDYBs,whichcanbedesignedwithqvaluesgreaterthanthoseusedfortraditionalsteelbracedframes
| Titolo: | Achieving a more effective concentric braced frame by the double-stage yield BRB |
| Autori interni: | |
| Data di pubblicazione: | 2019 |
| Rivista: | |
| Handle: | http://hdl.handle.net/20.500.11769/362105 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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