列车提速下32mPC简支T梁的横向刚度加固方案研究

27120052JOURNALOFTHECHINARAILWAYSOCIETYVol.27No.1February2005:100128360(2005)012009020632mPCT,,(,100044):32mT,,,,,:T;;;:U441.3:AStudyonLateralRigidityReinforcementSchemesfor32mSimply2supportedPCT2beamsunderTrainSpeedRaisingHANYan,XIAHe,ZHANGNan(SchoolofCivilEngineering&Architecture,BeijingJiaotongUniversity,Beijing100044,China)Abstract:Severallateralrigidityreinforcementschemesfor32msimply2supportedPCT2beamsonexistingsingle2linerailwaybridgesundertrainspeedraisingarestudied.Thedynamicresponsesofvehiclesandbridgeswiththevariousreinforcementschemesarecalculatedbymeansofthevehicle2bridgeinteractionmodel,inwhichtrackirregularitiesandwheelhuntingmovementaretakenintoaccount.Comparisonandevaluationaremadeamongtheschemespro2posedbythedesigninstitute,factorsinfluencinglateralbridgevibrationareinvestigated,andmeasuresareproposedforwhatareneededinreinforcingbridges.Keywords:PCT2beam;vehicle&bridgeresponse;speedraising;reinforcementT,1232mT206070,T,,,,,,31.7m,9.7mm,L/16.5=1.94mm,,:2003211218;:2004206228:(2001G03):(1970),,,E2mail:[e-mail][13]32mT(201928),,,,,1,,3:1:62.5m0.3©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),;2:82.5m0.2m1.56m(),;3:60cm,2340cm,21.25m0.2m1.56m(),3,011222.12.5mT,,T,()(),,[4],2.2:1DF4+5C62+5C62+5C62+5C62,200km/h1+5,PW2200,,;5,;3,64,3327,4,17[59]2.3SAP,,,,16,,24,,19132mPCT©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[5]Newmark2,0.002s,2%5,50m,,8.5m,3.0mm,026090km/h;140210km/h,10km/h,20()33.1511/Hzf1f2f3f4f503.363.696.89S8.89S12.7313.493.637.02S9.52S12.5423.69+4.6710.34S11.73S12.7833.65+4.258.56S10.07S12.561,15,1,,231,1,,2927©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[10]4,,190km/h0.8,(GB5599285)134,32,2,4,,,202,Max,;Ave,;VAR;;39132mPCT©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(kmh-1)MaxAveVAR/%/(kmh-1)0100%(3.40mm)100%(2.85mm)9.590100%(2.46mm)100%(1.78mm)12210261.256.916.19090.282.016.6190348.545.914.59078.069.821.02100100%(0.174g)100%(0.141g)11.190100%(0.162g)100%(0.126g)15.6210289.071.822.29081.172.317.7210374.856.724.18072.253.724.91600100%(1.076)100%(0.681)17.890100%(0.625)100%(0.464)14.6210270.485.415.39091.893.914.3210372.685.416.39094.095.414.02100100%(0.856)100%(0.665)10.790100%(0.523)100%(0.406)13.2200259.659.715.86081.690.06.1200366.666.014.39094.292.510.72000100%(0.42g)100%(0.274g)25.760100%(0.071g)100%(0.049g)23.0210299.999.023.56098.498.023.6210398.697.224.06094.496.711.12100100%(0.45g)100%(0.303g)24.490100%(0.166g)100%(0.117g)26.8210299.199.824.09096.791.925.6170397.998.523.79097.497.526.5210,23,20,3,14.5%,21.0%,24.0%,11.1%,,,2,3,51.5%,54.1%;22.0%,30.2%,20,L/16.5=1.94mm95%532mT,:(1)32mT,,24927©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(2),,(3),,,(4),,(),:[1],,.[J].,2000,21(2):1925.[2]XiaHe,etal.Dynamicanalysisoftrain2bridgesystemanditsapplicationinsteelgirderreinforcement[J].Int.JournalofComputerandStructure,2001,(79):18511860.[3],.[J].,2003,20(3):142149.[4].[J].,2000,(11):810.[5].[M].:,2002.118134.[6]FlybaL.Vibrationofsolidsandstructuresundermovingloads[M],London:ThomasTelford,1999.[8],.[J].,2003,20(3):142149.[9]XiaHe,XuYoulin.Dynamicinteractionoflongsuspensionbridgeswithrunningtrains[J].JournalofSound&Vibra2tion,2000,237(2):263280.[10].2[M].:,2002.33934.()P2PTMD59132mPCT©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.