钢结构防火涂料等效热传导系数的确定

SichuanBuildingScience30320049:2003207228:(1971),,,,,1,1,1,2(1.,200092;2.,333000):,,,,:;;;:TU391:A:1008-1933(2004)03-0114-031,,600,30%;,45W/(mK),(114210W/(mK))30,,15min,600,,,,,,:,:(1),;(2),;(3),,,,1,,1;,2,,,:(1),(2),,,,,(3),,,,,,,,,,,411©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.1,,,,,3(i),,,,(),,,,,,();:()(),,,,22,,,,,,:(1)();(2);(3);(4);(5),eq,i=i0(1)(6)eq,i[1,2]tTs,i(t);(7)Ts,i(t)Ts(t),|Ts,i(t)-Ts(t)|Ts(t)econv(2)eq,i+1=eq,i+f(Ts,i(t)-Ts(t))(3)(6)(2)econv|Ts,i(t)-Ts(t)|Ts(t)econv(4)eq=eq,i,,,,,,,,44.1FH1FH2FH3I36b,Q235B,1,4,,5630mm,550mm240mm,132kN,3,431/min/mmFH11312150FH2661180FH315211795112004No.3,:©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.4,,,,[3]557161200kg/m3,800J/(kg)22di/mmi/(W/(mK))FH121500101056FH211800101920FH3117901006194.2,,,28mm,353kg/m3,1000J/(kg),165min,0100865W/(mK)5,(),,,,,,,,,,,,,,,,6,,,,,:[1].[M].:,1982.[2],,.()[M].:,1993.[3],,.[M].:,1999.AnapproachtodeterminetheequivalentthermalconductivitycoefficientoffireinsulationofsteelmembersJIANGShou2chao1,XUXiao2yang1,ZHAOLei1,XIONGHao2(1.CollegeofCivilEngineering,TongjiUniversity,Shanghai200092,China;2.JingdezhenUrbanPlanningAdministrationBureau,Jingdezhen333000,China)Abstract:Angeneralreviewispresentedontheevaluationmethodfortheperformanceoffireinsula2tionofsteelmembers1Someproblemsofthepresentmethodarepointedout1Anapproachisproposedtodeterminetheequivalentthermalconductivitycoefficientoffireinsulationaccordingtotemperatureofsteelmemberobtainedbystandardfiretest1Theproposedapproachmakesitpossibletoevaluatetheperformanceofintumescentinsulationandcalculatethetemperatureofsteelmemberprotectedbyintu2mescentinsulationsubjectedtofire1Adoptingtheproposedmethod,theequivalentthermalconductivi2tycoefficientofseveralfireinsulationproductsareobtainedfromthedataofstandardfireresistanttests1Inconclusion,someadvicesareraisedondatarecordingandreportissueofstandardfireresistanttestsonfireinsulation1Keywords:steelstructure;fireinsulation;thermalconductivitycoefficient;standardfireresistanttest61130©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.