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在线教务辅导网HTTP/WWWSHANGFUWANGCOM更多课程配套课件资源请访问在线教务辅导网63EARTHQUAKERESISTANTSTRUCTURALSYSTEMS2018/1/102NRIGIDFRAMESTRUCTURES框架NINFILLEDFRAMESTRUCTURES填充框架NSHEARWALLS剪力墙NBRACEDFRAMES支撑框架NWALLFRAMESTRUCTURES框架剪力墙结构NFRAMEDTUBESTRUCTURES框筒NTUBEINTUBEORHULLCORESTRUCTURESNBRACEDTUBESTRUCTURES桁架筒NBUNDLEDTUBESTRUCTURES束筒RIGIDFRAMESTRUCTURES框架NRIGIDFRAMESTRUCTURESTYPICALLYCOMPRISEFLOORDIAPHRAGMS5DAIEFRAM隔板SUPPORTEDONBEAMSWHICHLINKTOCONTINUOUSCOLUMNSHORIZONTALTRUSSINGNTHEJOINTSBETWEENBEAMANDCOLUMNSAREUSUALLYCONSIDEREDTOBERIGIDRIGIDFRAMESTRUCTURES框架NRIGIDFRAMESTRUCTURESCARRYGRAVITYLOADSLATERALLOADSNTHEFRAMESAREEXPECTEDTOCARRYTHEGRAVITYLOADSTHROUGHTHEFLEXURALACTIONOFTHEBEAMSANDTHEPROPPING5PRCPIN支撑ACTIONOFTHECOLUMNSFLEXURALACTIONNNEGATIVEMOMENTSAREINDUCEDINTHEBEAMADJACENTE5DVEISENTTOTHECOLUMNSCAUSINGTHEMIDSPANPOSITIVEMOMENTTOBESIGNIFICANTLYLESSTHANINASIMPLYSUPPORTEDSPANMIDSPANPOSITIVEMOMENTLQNLATERALLOADS,IMPOSEDWITHINTHEPLANEOFTHEFRAME,ARERESISTEDTHROUGHTHEDEVELOPMENTOFBENDINGMOMENTSINTHEBEAMSANDCOLUMNSNFRAMEDBUILDINGSOFTENEMPLOYMOMENTRESISTANTFRAMESINTWOORTHOGONALC5WCENL正交的DIRECTIONS,INWHICHCASETHECOLUMNELEMENTSARECOMMONTOBOTHFRAMESTHECOLUMNELEMENTISCOMMONTOBOTHFRAMESNRIGIDFRAMESTRUCTURESAREWELLSUITEDTOACCOMMODATE使适应HIGHLEVELSOFINELASTIC7INI5LASTIKDEFORMATIONNWHENACAPACITYDESIGNAPPROACH承载力设计法ISEMPLOYED,ASSIGNTHEENDZONESOFTHEFLEXURALBEAMSTOACCEPTTHEPOSTELASTICDEFORMATIONEXPECTEDWEAKBEAMDESIGNTHECOLUMNMEMBERSSUCHTHATTHEIRDEPENDABLE可靠的STRENGTHISINEXCESSOF超过THEOVERSTRENGTHCAPACITYOFTHEBEAMHINGESNTHEREBYENSURINGTHEYREMAINWITHINTHEIRELASTICRESPONSERANGEREGARDLESSOFTHEINTENSITYOFGROUNDSHAKINGSTRONGCOLUMNOVERSTRENGTHCAPACITYOFTHEBEAMHINGESNRIGIDFRAMESTRUCTURESARE,HOWEVER,OFTENQUITEFLEXIBLEWHENTHEYAREDESIGNEDTOBEFULLYDUCTILE,SPECIALPROVISIONSAREOFTENNEEDEDTOPREVENTTHEPREMATUREONSET5CNSETOFDAMAGETONONSTRUCTURALCOMPONENTSNRIGIDFRAMECONSTRUCTIONREINFORCEDCONCRETEBUILDINGS(IDEALLYSUITEDFOR)STEELFRAMEBUILDINGS(COSTLY)NRIGIDFRAMECONSTRUCTIONISIDEALLYAI5DIELISUITEDFORREINFORCEDCONCRETEBUILDINGBECAUSEOFTHEINHERENTIN5HIERENT固有的RIGIDITYOFREINFORCEDCONCRETEJOINTSNTHERIGIDFRAMEFORMISALSOUSEDFORSTEELFRAMEBUILDINGSBUTMOMENTRESISTANTCONNECTIONSINSTEELTENDTOBECOSTLYTHESIZESOFTHECOLUMNSANDGIRDERSATANYLEVELOFARIGIDFRAMEAREDIRECTLYINFLUENCEDBYTHEMAGNITUDEOFTHEEXTERNALSHEARATTHATLEVEL,ANDTHEYTHEREFOREINCREASETOWARDTHEBASENCONSEQUENTLY,THEDESIGNOFTHEFLOORFRAMINGCANNOTBEREPETITIVERI5PETITIVASITISINSOMEBRACEDFRAMESNAFURTHERRESULTISTHATSOMETIMESITISNOTPOSSIBLEINTHELOWESTSTOREYSTOACCOMMODATETHEREQUIREDDEPTHOFGIRDERWITHINTHENORMALCEILINGSPACEINFILLEDFRAMESTRUCTURES填充框架NCOLUMNANDGIRDERFRAMINGOFREINFORCEDCONCRETE,ORSOMETIMESSTEEL,ISINFILLEDBYPANELSOFBRICKWORK,ORCASTINPLACECONCRETEINFILLEDFRAMESTRUCTURES填充框架NWHENANINFILLEDFRAMEISSUBJECTEDTOLATERALLOADING,THEINFILLBEHAVESEFFECTIVELYASASTRUTALONGITSCOMPRESSIONDIAGONALTOBRACETHEFRAMEINFILLEDFRAMESTRUCTURES填充框架NBECAUSETHEINFILLSSERVEALSOASEXTERNALWALLSORINTERNALPARTITIONS,THESYSTEMISANECONOMICALWAYOFSTIFFENINGANDSTRENGTHENINGTHESTRUCTURESHEARWALLS剪力墙NASHEARWALLISAVERTICALSTRUCTURALELEMENTTHATRESISTSLATERALFORCESINTHEPLANEOFTHEWALLTHROUGHSHEARANDBENDINGSHEARWALLS剪力墙NSHEARWALLSCONCRETEWALLSMASONRYWALLSHIGHINPLANSTIFFNESSHIGHSTRENGTHSHEARWALLS剪力墙NASHEARWALLACTSASABEAMCANTILEVEREDOUTOFTHEGROUNDORFOUNDATIONNPARTOFITSSTRENGTHDERIVESFROMITSDEPTHNSHEARWALLSAREORIENTEDINONEDIRECTION,SOONLYLATERALFORCESINTHISDIRECTIONCANBERESISTEDNSYMMETRYHASABEARINGON关系到,影响到WHETHERTORSIONALEFFECTSWILLBEPRODUCEDNSHEARWALLSSYMMETRICALINTHEPLANEOFLOADINGNSHEARWALLSATTHEINTERIOROFAMULTISTOREYBUILDINGNWALLSENCLOSINGSTAIRWAYS,ELEVATORSHAFTS,ANDMECHANICALCHASES(CHANNEL)AREMOSTLYSOLIDANDRUNTHEENTIREHEIGHTOFTHEBUILDING,THEYAREOFTENUSEDFORSHEARWALLNSHEARWALLSINBOTHDIRECTIONSSHEARWALLS剪力墙NSHEARWALLSDONOTNEEDTOBESYMMETRICALINABUILDING,BUTSYMMETRYISPREFERREDTOAVOIDTORSIONALEFFECTSDESIGNOFSHEARWALLSHEARWALLSREMAINNOMINALLYELASTICUNDERLOWORMODERATEINTENSITYLOADINGSPOSTELASTICDEFORMATIONSWILLDEVELOPWITHINTHELOWERPORTIONOFTHEWALLUNDERHIGHINTENSITYLOADINGS,GENERALLYCONSIDEREDTOEXTENDOVERAHEIGHTOFTWICETHEWALLLENGTHABOVETHEFOUNDATIONSUPPORTSYSTEM剪力墙设置底部加强部位NGOODPOSTELASTICRESPONSECANBEREADILYACHIEVEDWITHINTHISREGIONOFREINFORCEDCONCRETEORMASONRYSHEARWALLSTHROUGHTHEPROVISIONOFADEQUATECONFINEMENTOFTHEPRINCIPALREINFORCINGSTEELANDTHEPROHIBITIONOFLAPSPLICESOFREINFORCINGBARSCOUPLEDSHEARWALL联肢墙NCOUPLINGBEAMS连梁COUPLEADJACENTMORESLENDERSHEARWALLS连梁剪切破坏SHEARFAILUREOFCOUPLINGBEAMS连梁、墙肢破坏NTHECOUPLINGBEAMSTHENBECOMESHEARLINKSBETWEENTHETWOWALLSBRACEDFRAMES支撑框架NABRACEDFRAMEISATRUSSSYSTEMOFTHECONCENTRICORECCENTRICTYPEINWHICHTHELATERALFORCESARERESISTEDTHROUGHAXIALSTRESSESINTHEMEMBERS杆件轴向拉伸或压缩BRACEDFRAMES支撑框架NATONEENDOFTHEBUILDINGTWOBAYSAREBRACEDANDATTHEOTHERENDONLYONEBAYISBRACEDNBUILDINGISONLYBRACEDINONEDIRECTIONANDTHEDIAGONALMEMBERMAYBEEITHERINTENSIONORCOMPRESSION,DEPENDINGONWHICHWAYTHEFORCEISAPPLIEDBRACEDFRAMES支撑框架NASINGLEDIAGONALCOMPRESSIONMEMBERINONEBAYCANBEUSEDTOBRACEAGAINSTLATERALLOADSCOMINGFROMEITHERDIRECTIONNTENSIONDIAGONALSMUSTBERUNBOTHWAYSTOACCOUNTFORTHELOADCOMINGFROM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