鋼框架梁端翼緣擴翼型和側(cè)板加強型節(jié)點有限元分析.pdf

1、青島理工大學碩士學位論文鋼框架梁端翼緣擴翼型和側(cè)板加強型節(jié)點有限元分析姓名：馬輝申請學位級別：碩士專業(yè)：結(jié)構(gòu)工程指導教師：王燕201012AbstractWidespreadandunpredictedbrittlefractureshavebeenfoundinweldsteelbe鋤col咖connections(weld—flangebolted—webconnections)ofsteelframesshak∞duringthe

2、NorthridgeearthquakeandtheKobeearthquakeSuchfracturesweremostofteninitiatedatthebosomflangeweldandpropagatedintothecolumnjflaIlge觚dthebeamwebThepostearthquakestudieshaveshownthatthetraditionalseismicbe_haviorofbeamcolumn

3、connectionsisnotgoodbecauseofthebrittlefailurepreventstheweldedmomentconnectionsfromexhibitingtheinelasticbehaviorexpeetedExtensiveexperimentallyandnumericallystudieswerethereforeconductedtotheimprovedbeamcolumnconnectio

4、nsintheworldwideThebeamtocolumnconIle以0nwithbe鋤endhorizontalhaunchisakindofreinforcedbeamtocolumnwhidlisoneofthetypicalformstomoveplastichingeoutwardfromthebeamandcol啪nilltafaceconnectionsItincludestwocategoriesofconnect

5、ionsOneofthetwocategoriesisthesideplatereinforcedsectionTheothercategoryisthewidenflangesectionBywideningbeamflanges，theplastichingewillformtheweldsthathavemuchfracturepronenessduetostressconcentrationandweldingsensitivi

6、tyreducingthedamageofbrittlefractureofconnectionsandimprovingtheductilityofthestructurenumericalanalysisofwidenflangesectionandsideplatereinforcedsectionincludingtwoaspects：1Accordingtothetestsideinwidenflangesectionands

7、ide—platereinforcedsectionthee!’tablishmcntofthenodethatcorrespondswiththeexperimentalthree—dimensionalfiniteelementmodel，ANSYSfinitedementanalysissoftwareusingthetestmodelwasundercyclicloadingfiniteelementanalysis，andte

8、stresultsareanalyzedandcomparedwithfiniteelementanalysisverifiedtheaccuracyandreliabili饑andinaccordancewithJapan’s”steelconstructionwiththeDepartmentofDesignGuidelinessideofboxcolumnsectiontoestablishenhancednodemodel，th