基于瞬態(tài)傳熱的鋼結構構件抗火分析.pdf

1、分類號：TU3單位代碼學號密級跫792岳9610005S200204044公開北京工業(yè)大學碩士學位論文中文題目基王暖查佳墊的翅結構控鮭蘊么僉塹英文并列題目：FIRE—RESISTANT^NALYSISOFSTEELS!塞型￡!!』墾至叢曼叢旦曼基BASEDONTRANSIENTHEATTRANSFER研究生姓名：王扭塹專導業(yè)：苤掏工猩師：強愛鹽研究方向：塑結掏職稱：麴撞論文報告提交日期：2QQ生旦!H學位授_『卜1期：2Q業(yè)生』目31I

2、i授予單位名稱和地址：jE童王、業(yè)厶堂IE寶直麴圈匡堊巫I型!業(yè)蘭北京工業(yè)大學，|=學碩士學位論文ABSTRACTBecausethearchitecturalvelocityofthesteelstructureisquick，itsaseismaticfunctionisgood，isarchitecturalfagadeisbeautifulandchangefulAtthesalnetime，itsapplicationfore

3、groundwillbeveryextensivealongwiththeoutputofthesteelbecamemoreandmoreAlthoughthepoorfireresistanceabilityisthemainweaknessofsteelstructureinthatitsmechanicalpropertysuchasstrengthandelasticmodulusdecreaseseverelyinhight

4、emperatureWhenfireOCCurS，severedamageorglobalcollapsewillhappentothesteelstructureInchinatest—basedfireresistancedesignmethodistheprevailingfireresistancedesignmethodforsteelstructuresHoweverusingthetest—basedfireresista

5、ncedesignmethod，itiscostlyandhardtosimulatethemagnitudeanddistributionofloadsandtheendrestrictionconditionsofthespecimensinthestructureTheultimatefireresistanceofthesteelstructureandthefireprotectionmeasuresCallbedetermi

6、nedthroughcalculation—basedfireresistancedesignmethodTherefore，athoroughstudyofthecalculation—basedfireresistancedesignmethodhasgreattheoreticalsignificanceandpracticalvalueThecalculationmethodoffiresafetyofsteelstructur

7、ememberbroughtforwardisbasedontheanalysisofagreatdealofparameterAndthepaperisonthebasicofnonlinearfinite，heattransferandmechanicsofelasticitytheheattransfermodelandmechanicsmodalfurcedonstaticloadandthermal10adofasteelst

8、ructurememberunderfireissimulatedbythesoftwareofANSYS。Thispapersimulatedsteelstructurememberrespondtotemperatureinthefire，anddisplaythetemperaturedistributingnephogramandvariationalcarveofsomegivennodesinthesectionInacco

9、rdingtocomparingthedifferenttemperaturedistributingofthedifferentsectionandthedifferentfashionbearingfire，weCallgetthatincreasingthethicknessofthewebplateisveryimportanttothefire—resistantofsteelstructureFinallythispaper