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1,2113(11030024;21030013;31210096)(1.TaiyuanUniversityofTechnology,030024;2.ShanxiUniversity,EngineeringDepartment,Taiyuan,030013,3.SoutheastUniversity,Nanjing210096)[],,,,,,,[]ABSTRACT:Thecast2in2placereinforcedconcrete(RC)hollowflatslabhadbeenanalysedbymeansoftheelasticfi2niteelementmethod.Threekindsoftypicalpaneldistributionmomentaregivenoutandthestripmomentofcolumnstripandmiddlestripanddistributioncoefficientinthepanelsarealsoobtained.Comparedwiththeequivalentthicknesssolidflatplate,bi2directionstiffnessareproposedtakingintoaccounthollowtubes.Theexperimentalcoefficientmethodandtheequivalentframemethodofthesolidflatplatecanbeused.Itiseffectiveforinstructingengineeringdesign.KEYWORDS:Cast2in2placeRChollowslabHollowflatslabMiddlestripColumnstripAnisotropicpropertyofstiffness,,,,20%-30%;,50%-60%[1],,,:;;;,,,(),,:;;[2],,,1111,,,45m45m,19m9m,C30,h=300mm,d=200mms1=250mm,s2=200mm,1200300mm,q=8kN/m2,,h=300mm,300mm300mm,Ansys,,:,,,22223120063Vol.23No.1March2006SPECIALSTRUCTURESNo.12006©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.((kN.m)/m)2(kN.m)x12132322221501921561944100%121513114180%23518224011612112%2016218152210118%yA2AC2CB2B21501921561013137%1215121711168%2351822391069105%201621818828144%x23971824121293164%14611414517120129%2891242921223134%10412493160210121%y23971824091813101%14611414516820131%2891242901801175%1041249615127142%34,,,,,,31((kN1m)/m)41(kN1m)x12121891122011446154%4172416820185%22224310424913214159%271982513029158%3232156162166196158%15109151844197%yA2AC2C2109122110141114%11142111863185%2158142163183145%B2B2371212391425194%291102013627137%2371042401519137%x22961123121365149%17714017710920117%24071824631513165%41382167239104%13811912418229168%2100112109119105%y21741421791362186%721477213220121%2841892871583117%10913710214526133%24171724291972161%15019315013920136%5678xy,xy,ACI5xy8215/8214/7558195/6115/558215/82168/7558195/60198/551715/17154/2541105/3815/451715/17132/2541105/39102/4561xy98158/99135/10056177/59136/6081110/81176/7582169/82165/7558106/59177/601142/0165/043122/40164/4018190/18124/2517131/17135/2541194/40123/4072xy82169/82141/7558106/60143/6098198/99110/10057166/58188/6081110/81187/7517131/17159/2541194/39157/401102/0190/01043122/41112/4018190/18113/258xy97142/98113/10056109/5815/6080118/81155/7597142/97164/10056109/58119/6080118/78182/752158/1187/01043191/41149/4019182/18145/252158/2136/01043191/41181/4019182/21118/25://ACI34,,,,A2A121,Y,YX,YX113,,,,532No112006:SPSTSPECIALSTRUCTURESNo.12006©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[3]Dy=Elxh312(1-v2)[1-316dd+s1(dh)3]Doy=Elxh312(1-v2)y=DyDoy=1-316dd+s1(dh)321Dx=Elyt312(1-v2)[1-0.93(dh)3.6][1+0.02(2s1h-d-2)]Dox=Elyt312(1-v2)x=DxD0x=[1-0.93(dh)3.6][1+0.02(2s1h-d-2)]DDx,Dyy,x;Dox,Doyy,x;x,yy,x;E,v,v=1/6;h,d,;s1;s2,,,,,,,,,,,,2,,,,,,,211,,,lx/4(ly/4),lx/2(ly/2):Mox=M1x+M2x=qlx(lx-2cx/3)2/8Moy=M1y+M2y=qly(ly-2cy/3)2/8MoxMoyxy;M1xM1yxy;M2xM2yxy;cx,cyx,y;lx,lyx,y[1],75%1/6,25%212,,,,,,,,,[2]42SPST20061SPECIALSTRUCTURESNo.12006©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.=xDox;Dy,eq=yDoy,Dx,eqDy,eqxy;xyxy,,:Kec=Kc1+kc/Kt38m,,6kN/m,410kN/m,C30,HPB235,500mm500mm,-210m,2415m,25316m311h=300mm,,d=200mm,lp=1500mm,s1=50mm,s2=200mm312q=1126+1144=1218kN/m2;Mox=Moy=qly(ly-2c/3)2/8=56819kN1m313(y),,(x),hoy=279mm;hox=267mm99x[4]AcsAmsAa,msACSAmsM1=015056819=28415kN1m269089718@90(2799)M2=011756819=9617kN1m61070610@100(785)M3=011856819=10214kN1m96932310@80(981)M4=011556819=8513kN1m5394678@100(503)M5=014856819=27311kN1m258686218@90(2799)M6=010556819=2815kN1m1784068@110(452)M7=012256819=12512kN1m118639514@80(1231)M8=011856819=10214kN1m6465628@100(503)(9)AcsAmsAa,msACSAms018M2=7714kN1m4898@100(503)018M4=6812kN1m4308@100(503)018M6=2217kN1m1438@200(251)018M8=8119kN1m5178@100(503)018M1=7111kN1m4498@100(503)018M3=2516KN1m1628@200(251)018M5=6813kN1m4328@100(503)018M7=3113kN1m1988@200(251)Acs;Ams;Aa,ms;ACS;Ams75%l/6,4,,,,,,,[1],.[M].:,1998,3[2].[M].:.1998[3].[D].:.2004,3[4]..,19912005,40072,,,50%,,,,,9614,6241km24161,8,35124km200516,()52No112006:SPSTSPECIALSTRUCTURESNo.12006©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.