上海南站钢屋盖结构性能化抗火安全评估

7220054ProgressinSteelBuildingStructuresVol.7No.2Apr.2005:2004-11-04:(1963-),,,,,E2mail:[e-mail](1972-),,,,,,(,200092):,,,,,:;;:TU393.3:A:1671-9379(2005)02-0031-06AnalysisoftheFireSafetyoftheSteelRoofConstructionofShanghaiSouthRailwayStationLIGuo2qiang,GUOShi2xiong,JIANGShou2chao,DUYong(SchoolofCivilEngineering,TongjiUniversity,Shanghai200092,China)Abstract:TheShanghaisouthrailwaystationisthepivotalpositionofthetrafficinShanghai.Becausetheultra-largespaceinthebuildingisbeyondthespecificationsofthefiresafetydesigncodes,especiallyforsuchanimportantsteelbuilding,itishardtosatisfythesafetyandeconomicrequirementaccordingtothenationalstandards.Inthispaper,thesafetyofthesteelroofstructureofShanghairailwaystationisanalyzedwiththeperformance2basedmethod.Firstly,thetargetoffire2resistanceofthestructureisdetermined,thenthesteelroofstructureinthemostdangerouspotentialfiresituationisanalyzed.Atthelast,dependingonifthetargetoffire2resistanceismet,thefiresafetyofthesteelroofstructureisanalyzedandtheprotectionmethodisdetermined.Theresultoftheanalysisisa2doptedbythebuildingownerandthefiredepartment,andcanbereferencedforthefiresafetydesignofsimilarbuildings.Keywords:performance2basedapproach;steelstructure;fire2resistance1(1),,56718m2,48767m2,7951m2,42.7m7.5m9.9m,9.9m7.5m35.2m(42.7m),,,2©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[1],,,(),,1.5h,,(),,(),,3,,(),,[2]3[3]3[3],:1);2),,223©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.::441:,FDS,3000MJ/m2,(,100m2)50m2,32.5MW77min10m565210m655.1ANSYS7Beam44,Link10,Combin14733©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(8)[4]8-5.2(DG/TJ08-008-2000)[4]7.1.2,::q=1.0Gk+0.7Qk+1.0T:q=1.0Gk+0.7Qk+0.3Wk+1.0TGk,Qk,Wk,T()66.11),98,108080min,80min180min80min92)1101/min/MPa013016347.715180310165621950136166461498031316761177,,80min,80min80min180min,,11,121143©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.=1.1295=324.5MPa440,195MPa,202MPa,123),42.77.2.4N4431.3kN,2313kNm,070030,76,1.0NEXT=2ET2A=70410kN0.913,m=0.65,x=1.15,R=1.1(7.2.4-1)NxTA+mMxxWx(1-0.8N/NEXT)TRf=233MPa=324.5MPa,6.21),13132)22/min/MPa013016347.715190190165671550136166461499019216764.7153,,90min,90min90min180min570,67MPa,109MPa155MPa,20,315MPa570,,,192MPa141553©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.),42.77.2.4,474.370030N5883.5kN,967.8kNm17,0.686,0.525NEXT=2ET2A=48230kNxT=0.913,m=0.65,x=1.15,R=1.17.2.4-1NxTA+mMxxWx(1-0.8N/NEXT)TRf=161.8MPa=170MPa,7,,,,,,,,,:[1].(GB16-87,)[S].:,1996.[2]Meacham,B.J.andCuster,R.L.P.Performancebasedfiresafetyen2gineering:Anintroductionofbasicconcepts[J].Journaloffirepro2tectionengineering.SFPE,Boston,1995,7(2):35-54.[3],..,2004,(1):46-48.[4].(DG/TJ-008-2000)[S].:2000.63©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.