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:1006-7329(2003)01-0123-06X,,(,400042):,50mT,,:;;:U445.4:A11.1,,1492m,1150m(T)+72m+128m+72m()+1350m(T)+20m(),9.5m128m,«2.0m,108.5m,10;«1.2m«1.8m1.21(m3)(t)94160003052949712402272m4067849253159185T9655149542498810133799254322.1,(2528m),(8m),(58m),(1016m),(1518m),2.233,,,,,,,25120032JournalofChongqingJianzhuUniversityVol.25No.1Fb.2003X:2002-11-18:(1968-),,,,©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.33.11719m,2.5m/s,6m,-1.0m,+5.25m,793m3.2,2/356,79710,1035m/s,56m/s103,,,685%14,4.1,:1),;2)7813m;3);4)79,3m;5)110m(ª2m);6)(+0.3m),,;7),4.2,:4.2.1()1):18900mm,=10mm(),102400mm,=12mmI56a[38a,3000kN200kN/m245m36m,,60m/,150t,45m/1015mPHP42125©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.90t545m,,45m,120t120,I56a,40t,[38a()2):,BRM4B,,100m108.5m,,,3):1m/h50cm/h,,,108.5m,,,,,(ª272)(),2()4):,,4000t,5060m3/h,1000m328m,4.2.2(ª120cm)ª1.2m,:,75m,,11(84m),4.2.3(+0.30.5m),,90h,22.5h,,,,,,:1),,,,2),,,,()3)4),,(),,,5)6),4.2.4,,,,(2)1)(1),,67();(2)79,;(3)792)5211,:©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.2(1):,5385cm(=12cm),2m1008mm,I56a,,67cm2.08mI56a,1.5,130t;(2):0#=8mm,[12,63407;(3):«32l,(),(10T«21.5mm),;(4):=20mm3)(45t/),,,,,,4),67,,,,,21m[40a2m,T,,6mm4.2.550mT50mT,,,-,,:1),,2),,(BPB150ZKF150)10,3)1,122,50mT,,:(1)BPB15050Hz150Hz(2)ZKF150,1m,150Hz,,,(3)2BPB1508ZKF1504.2.650mT62125©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.9.5m,4,,T(T148t)1):,114m,50m,,.40tZL50,54m,40t,ZL50,1,22):,,,T,:(1),,(2),,350mT(3)T2,5,,225160m11184m2162t40t140t7#1300t32#1300t33#1400t50121000kW13HBT60420m3/min4091400HP4000t11227211,:©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.6,,,,,(),,,,,,,:[1],.J.,2001,23(5):71-75.[2].BJ.,2001,23(5):85-90.NewConstructionTechniquefortheOutsideSeaBridgeSUYong-hui,HUYu-long,LONGLiang-jun(No.2EngineeringCompany,No.2NavigationalEngineeringBureauofChinaHarborEngineeringCompanyGroup,Chongqing400042,P.R.China)Abstract:Inthispaper,thenewconstructiontechniquefortheDongtouBridgeinZhejiangProvinceundertheconditionofoutsideseaisintroduced.Theunconventionalconstructiontechniqueistakenonthepilefounda2tions,pilecap,suspendingcastofboxgirderandtheerectionofthe50mTbeametc.underthestrongwingconditioninoutsidesea.Thepracticeshowsthaterectingthetrestleorancillarypiersinshallowwaterzoneanderectinglargeserviceplatformindeepwaterzoneareefficientwaystothebridgeconstructionundertheconditionofoutsidesea.Keywords:outsidesea;bridge;constructiontechnique(108)ConstructionTechnologyfortheKeyPiersinWaterofLuzhouRailwayBridgeacrossYangtzeRiverJIANGMing-gui(ChangjiangChongqingWaterwayEngineeringBureau,Chongqing400011,P.R.China)Abstract:LuzhouRailwayBridgeacrossYangtzeRiverfortheRongnaRailwayinSichuanProvincebelongstotheextralargebridge,its2#and3#keypiersinwaterareconstructedonthelargesunkenshaftfoundationwithdoublewallsteelcofferdam.Thisprojectisahardworkwithhighrisk.Inthispapertheconstructiontechniqueandmeasuresforthisbridgeareintroduced,whichprovidevaluableexperienceforconstructionofsimilarbridgeinfuture.Keywords:bridge;keypier;sunkenshaft;construction82125©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.