水中大孔径挖孔桩施工技术

:1003-4722(2003)S0-0059-02,(,410001):605,:;;;:U445.71:AConstructionTechniquesforLargeDiameterDugPileinWaterLIUKeng,DUGuan2min(ChangshaCommandingDepartmentofChinaZhongtieMajorBridgeEngineeringGroupCo.,Ltd.,Changsha410001,China)Abstract:Thispaperbriefstheconstructionschemesandeffectsofin2waterDugPileNo.5ofPierNo.60ofthemainspansofHeishipuXiangjiangRiverBridgeinChangsha,whichmayserveasreferencetotheconstructionofpilefoundationsinwater.Keywords:bridgefoundation;pilefoundation;dugpile;constructiontechnique:2003-03-05:(1971-),,,1993,,,605,1,3068m;:580m()+144m+162m+144m()+380m()5364,;250cm,60,18,1,:+28.0m,+18.63m,2.0m,3.0m,9.0m,34.2m,2160260,10m,30t,;160t280cm;16mm,,;95,©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.2-21.0m,23.7m,44.7m,,560cm,,,5300mm,3,18,0.518m,20,,SH-30,127mm,,,,,SH-30,XY-1A,2.0m2.0m,2.0m,11.615.63m,4.00m3,25mm,0.2m,3.0m(8mm,30),12,,,2.00m,,,425,21110.61(BW-150)510mm,21,:20%,,,,:,2LPmin,30min;2.0MPa,,,,,,,0.05,3min,2h,,1,,,,,,,,(=10mm);,,,,2.0m,,3605-21.0m,23.7m,44.7m2001115,1223,49d,,,062003©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.