桥梁大直径桩施工难点及其对策

15119993JOURNALOFCHANGSHACOMMUNICATIONSUNIVERSITYVol.15No.1Mar.1999:1000-9779(1999)01-0080-04X,,,(,410004):,:;;:U445.55:A2080,,,,,,2.5m(),(),2.5m1,60,,70,BDM,2.0m70,,,90,,90m20.5m,500cm/350cm[1],,400cm11/cm250280300350400500600:,,,80,;1993,X:1998-07-02:(1963),,.©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,300cm/250cm500cm/400cm223922/m/cm/m23025300/250300/25010526525330300/250300/25021024055+380+5530500/400(440)350/300123480,67,500cm/250cm800cm/600cm107,2156,33/m/m/m/cm/m25021452500/250106944200162316522100500/250750/400152034439012654600/30012428016545800/5001061652645+75+45800/600174660184016.5250/180151554020690700/35018230021648300/5008181080036360300302210002485,50,20350/280/1801871320262160450/400172,,,,,2,,,();,,;,,,(),,,;,,,,,2.1,,181:©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,;,,,:,(,),,,,,,:SB,,BMD-4QJ-250KP-300QZY-300KPY:,2.54.0m;,,,,,,,,39400cm,TM,,,,,,,(),,,,,,,:,2.2,,[2],,,,:,,[3]3,,1)(),,;,,,,2815©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.()(590m)(380m)(254m2100m)(84m)5,2),,1420cm,,HZLM,,,3)(()),,,,(),,,4),,,(),,;,,,,,:[1],,.[A].[C].:,1997.[2],.[J].,1996(2).[3],.[J].,1998(3).Constructiondifficultiesanditscounter2measuresofbigdiameterpilesinbridgesLIMan2cheng,YANGBin,MOJian2jun,WUTong2ao(HunanRoadandBridgeCorporation,Changsha410004,China)Abstract:Thedevelopmentsituationofpilefoundationinbridgesinourcountryandtherecentachievementinconstructionofbigdiameterpilesareintroduced.Thepropertiesofbigdiameterpilefoundation,thedifficultiesinconstructiontechnologiesandthesuccessfulmethodstosolvethesedifficulteisinourcountryaresummedup.Keywords:bigdiameterpile;development;property381:©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.