冬期混凝土综合蓄热法施工

:100926825(2010)0120159202:2009208226:(19752),,,,030001:,:,,:TU755.8:A,,1,2,3,4,5,,140467.69m2,,,,,1,,,,,;0,,,,,9%,,,50%,,,,,,,,,,:,30%;,40%;,-154N/mm2,-305N/mm22,,1115,3,-3,-27,Tm,a=-3l[ln(km/a)]/b=-17.8,JGJ104297,33.1,1):T0=[0.92(mceTce+msaTsa+mgTg)+4.2Tw(mw-wsamsa-wgmg)+c1(wsamsaTsa+wgmgTg)-c2(wsamsa+wgmg)][4.2mw+0.9(mce+msa+mg)],,mce=379kg;msa=897kg;mg=972kg;mw=182kg;Tce=10;Tsa=5;Tg=-5;Tw=70;wsa=3%;wg=1%;c1=2.1;c2=335T0=[0.92(37910+8975-9725)+4.270(182-0.03897-0.01972)+2.1(0.038975-0.019725)-335(0.03897+0.01972)][4.2182+0.9(379+897+972)]=12.12):T1=T0-0.16(T0-Ti),Ti=5T1=12.1-0.16(12.1-5)=113):T2=T1-(at1+0.032n)(T1-Ta),a=0.25;t1=0.02h;n=2;Ta=-5T2=11-(0.250.02+0.0322)[11-(-5)]=9.94):T3=CcmcT2+CfmfTf+CsmsTs/(Ccmc+Cfmf+Csms),Cc=0.92kJ/(kgK);Cf=2.51kJ/(kgK);Cs=0.48kJ/(kgK);mc=2400kg/m3;mf=31.6kg/m3;ms=86kg/m3;Tf=-5;Ts=0T3=[0.9224009.9+2.5131.6(-5)+0.48860]/(0.922400+2.5131.6+0.4886)=9.35)t:Tm=1/Vcet(A-B/+/-)+Tm,a,=KM/(VceCcc)=1.453.57.2/(0.0130.922400)=1.3;=VceQcemce/(VceCcc-KM)=0.013330379/(0.0130.922400-1.453.57.2)=-207.5;=T3-Tm,a+=9.1-(-5)-207.5=-193.4;Tm,a=-5;c=2400kg/m3;mce=379kg;Cc=0.92kJ/(kgK);Qce=330kJ/kg;Vce=0.013h;=1.45;M=8(0.652+0.35)/80.350.65=7.2;K=3.6/(0.04+1)=3.46kJ/(m2hK);A=e-Vcet=0.392;B=e-Vcet=0.296;t=72hTm=1/Vcet(A-B/+/-)+Tm,a=(-207.50.392+193.40.296/1.3-193.4/1.3+207.5)/(0.01372)-5=17.93.295136120101SHANXIARCHITECTUREVol.36No.1Jan.2010©1994-2011ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:[1]JGJ104297,[S].[2].[J].,2008,34(13):1532154.ComprehensivethermosmethodofconcreteinwinterconstructionNIUXiao2pingAbstract:CombinedwithHuadecenterplazaprojectinTaiyuantheprinciplefortheconstructionofconcretestructureinwinter,thedetermi2nationofcuringmethodandmattersdeservingattentionsinconstructionofcomprehensivethermosmethodareelaborated,inordertoensurewinterconstructionqualityofconcretestructures.Keywords:winterconstructionprinciple,methoddetermination,comprehensivethermosmethod(49),3),,,,,,,,,33.1,,(),,,,,,,,,,3.2,,,,,,,,4,,,:[1],.[J].,2008,34(9):68269.[2].[J].,1998(2):35236.[3],.[M].:,1997:12.InitialanalysisonundergroundspaceexplorationandutilizationinZhengzhoucityHEBinZHANGGuo2xianAbstract:Itdescribessignificanceoftheurbanundergroundspaceexplorationandutilization,concludescurrentsituationandexistingproblemsofthecurrentundergroundspaceutilizationinZhengzhoucity,discussesonsolvingcountermeasuresoftheundergroundspaceexplorationatthesametime,thusrealizingintensiveutilizationofthecityearth,promotingdiversificationofurbanfunction.Keywords:undergroundspace,exploration,utilization,civilproject06136120101©1994-2011ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.