大跨度钢管混凝土拱桥拱肋吊装过程的仿真计算

1,1,2,1(1.,410082;2.,410082):,,,,:;;:U448.22;U445.1:A:1671-7767(2006)02-0038-03:2005-06-13:(1961-),,,,1983,,1987,,2000,0,[1],,,5200m,,,[24],,,,,,,,,,,11.1(1)(2),1.2:,,40%,2.5;,,,,,,,,,,,,ANSYS,,,1,qsP,1(104)1T1,11,11(a),8320062©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(b)2T2,212T1,21,22,23,3,12,1(c)3T3,3,123T1,3T2,31,32,33,3kn,,,,n-1,(n-2,n-1)n25%50%n-1[1],,,n-1F=n(0.250.5)(1+),2T1,nT2,nT3,nTn-1,n1,n2,n3,nn-1,n:Ti=Ti,i+nj=i+1Ti,j(1),Ti,2:i=nj=ii,j(2),ii2,312m,52m,,50m,20cm2;19,1,3323,,[2]22,,:(1)[2],,93,,,©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.()22.8029.2853.7231.9972/kN12341357.20360.732563.41428.62374.49473.533399.08396.32551.15483.69624.00716.634215.93225.87215.56324.22453.89665.971431.561140.905191.25158.29177.23313.58260.38778.941787.461323.26:[2](2),33/cmABCD10.0621.500.273-0.620.930.484-3.56-5.860.199.825-1.400.0812.0534.34-4.02-4.5812.7244.16,,,,,,:[1].()[M].:,1985.[2],,,.[J].,2000,19(3):8-12.[3],,.[J].,2002,(3):52-58.[4],,,.[J].,1998,22(3):223-226.SimulationCalculationforLiftingandErectionProcessofArchRibsofLongSpanConcrete2FilledSteelTubeArchBridgesZHAOYue2yu1,LIUWei2chang1,FENGRui2,YANGXiang2zhan1(1.SchoolofCivilEngineering,HunanUniversity,Changsha410082,China;2.DepartmentofEngineeringMechanics,HunanUniversity,Changsha410082,China)Abstract:Inconstructionoflongspanconcrete2filledsteeltubearchbridges,theconstructionmethodofcable2stayedsuspensionandconnectionwithoutscaffoldingisquiteoftenusedforliftingande2rectionofarchribsegmentsofthebridges.Therefore,thedeterminationofthestaycableforcesandpre2setliftingamountoftheerectedribsegmentsbecomestheimportantmeasureforensuringconstructionqualityandsafety.Theutilizationoffiniteelementmethodbasedontheforwardanalysisasprovidedinthispapercaneasilyandeffectivelydeterminethestaycableforcesandpresetliftingamountintheliftinganderectionoftheribsegments,andthestaycablescanbetensionedtotheirtargetforcevaluesonlyatonetime.Eventually,examplesaredemonstratedtoprovethatthemethodiscorrect.Keywords:concrete2filledsteeltubearchbridge;cable2stayedsuspensionandconnection;staycableforce0420062©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.