广州华南快速路桥基钻(冲)孔灌注桩施工技术

:2004-09-23:(1969-),(),,,,,181203,13922715207,[e-mail]()(,510507):,(),112,ª110115118m,4451m,,,8m,:();;;:U445.55+1:B:1672-7428(2005)04-0015-03ConstructionTechniqueofDrilling(Wash)BoredPilesinHuananHighwayinGuangzhouCity/HOUJia2ning(GuangzhouThirdMunicipalEngineeringco.Ltd.,GuangzhouGuangdong510507,China)Abstract:ThepaperintroducesHua’nanHighwayengineeringinGuangzhoucity.Theprojectincludesseveralbridges,inwhichtotally112piecesdrill(wash)boredpiles,with1.0m,1.5mand1.8mindiameter,4451minlength,wereadoptedasthefoundations.Becausegeologicalconditionsvarieslargely,somestratacontainmudlayerandKarstcaveetc.andwhatsmore,mainbridgelocatinginwateratthedepthof8m,somedifficultiesweredealtwith.Keywords:drilling(wash)boredpiles;constructionmethod;techniquemeasures;bridgelocating12(),112,110115118,4451m,1,,3174418m,()()(),()()(),,,230m,210m4:,,,,11811m;,,,,014517m;,,,120m;,,1050m,,,,,8m,()200238,200262385%,2003511,2,(),:211,,210215m,,,3050cm,110m5120054()©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,,,,,90kW,35m,50cm212,,,;QJ-250BAVER-BE250,,,,,,,,,,:11081110kg/L,1822s,1215Pa,4%,95%,1420mL/30min,2mm,pH810213,,KTL-300,BRM-25t;,,,,,,,,,,,,,,,110m,5m,1m,,,,,,,;1m,,,1m,4mm,,;,1m,,,,10mm,,,,,,115m,,,,,,,,,214,,,2030cm,,,,,,215,,,100%,,,,7cm61()20054©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,,,,,,216,,ª300mm,3040mm,,,,,1m,,,,,,26m,015018m,3217,,2;,2;,,3,,,311:,,,,:,,;;,312:,,:,,,,,313:,,,:,,314:,;,:,;,,,,,315:,;,,:,26m,316:,;,,;,;,:,;,,,;,;,,4(1),(21)7120054()©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.N,,,,,;,,,,,,,2.1(1):,,200t,500t(2):,20,3,,12kg2.2()(1):,400m3600t,200m3300t(2):,8;152.3(1):60t20t(2):,23,,:;;,(17),5cm,(2),110m(3)(),(4)5m24h,,(5)(6),,(7),,,,,(8),,,,26m:[1],.[M].:,199311220054()©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.