马旦皮提亚废污水泵站咬合桩墙施工斯里兰卡,科伦坡2005年8月MADAMPITIYASEWERAGEPUMPINGSTATIONSECANTPILEWALLPROJECTCOLOMBO,SRILANKA,August2005MADAMPITIYASECANTPILEWALLPROJECT咬合桩墙平面图PROJECTLAYOUT咬合樁數量:134座(一期孔67座,二期孔67座)PileQ‘ty134Nos.(67Nos.P.P.,67Nos.S.P.)3540016300咬合樁數量:134座(一期孔67座,二期孔67座)PileQ‘ty134Nos.(67Nos.P.P.,67Nos.S.P.)樁徑PileDiameter:880mm樁深PileDepth:16m~21m崁岩深度:一期孔入新鮮岩盤500mm,二期孔入岩1000mmRockSocket:PrimaryPile500mmintoFreshRock,S.P.1000mmintoFreshRock咬合長度:130mm(樁心至樁心距離750mm)OverCutLength:130mm(CentertoCenter750mm)雙層護筒:外徑O.D.880mm,內徑I.D.800mmDoubleWallCasing:(17mx2套,多一付護筒靴Plus1SpareCasingStarter)使用鑽頭:鑽土短螺旋鑽SoilAugerSB780mmDrillingTools:崁岩旋挖斗RockBucketKBF-K780mm岩芯鑽CoreBarrelKRR780mm旋挖钻机:BG30MADAMPITIYASECANTPILEWALLPROJECT项目概要PROJECTBRIEFINGGL0.0mLayer1SandyClay,ClayeySiltSPTN=3~20GL–5.0mLayer2StiffSandyClaySPTN=5~27GL–10.5mLayer3VeryStiffSandyClaySPTN=15~27G.L.-15.0mLayer4CompletelyWeatheredRockAssumeSPTN=20~80G.L.-16.0mLayer5SlightlyWeatheredRockAssumequ=30~50MPaG.L.-17.0mLayer6FreshRockAssumequ=50~80MPaG.L.-20.0mMADAMPITIYASECANTPILEWALLPROJECT地层状况SOILCONDITION砂质黏土,黏土质粉土标贯值3~20堅硬砂质黏土标贯值5~27非常堅硬砂质黏土标贯值15~27完全风化岩盘推估标贯值20~80微风化岩盘推估抗壓強度30~50MPa新鮮岩盘推估抗壓強度50~80MPa區塊-BMADAMPITIYASECANTPILEWALLPROJECT导墙放样GUIDEWALLPOSITIONING1560mm1560mm1500mm300mm300mm900mmWOODSTRIPWEDGESCONCRETEC20(20MPa)BACKFILLWITHSANDAFTERCONCRETINGBLINDING100mmTH4xO16STIRRUPO10@250SECTIONA-AFORMWORKappr.500mmBSECTIONB-B25mmTHPLYWOODO900mmGUIDEWALLDETAILSFORSECANTPILEWALL(SPW880mmWITHOVERCUT100mm)BWEDGEHammerinTIMBERSTRUTPLYWOOD25mmTHFixedwithnail标准导沟配置TYPICALGUIDEWALLARRANGEMENTMADAMPITIYASECANTPILEWALLPROJECT导墙GUIDEWALL导墙钢模STEELFORWORKMADAMPITIYASECANTPILEWALLPROJECT导墙GUIDEWALL钢模定位POSITIONINGOFFORMWORK导墙灌浆GUIDEWALLCONCRETINGMADAMPITIYASECANTPILEWALLPROJECT导墙GUIDEWALLBlindingconcrete钢模拆除FORMWORKDISMANTLE连续制作导墙GUIDEWALLCONTINUEMADAMPITIYASECANTPILEWALLPROJECT导墙GUIDEWALL放置木撑及回填,旋挖钻可以进场施工BACKFILL,READYFORDRILLINGMADAMPITIYASECANTPILEWALLPROJECT导墙GUIDEWALL2005年8月6日开工仪式Aftersitestartingceremony,firstcasinginstallation(06,Aug.,2005).Mr.Upali(NawalokaM.D.)Mr.Alwis(NawalokaG.M.)Mr.PeterBuhl(AARSLEFFM.D.)MADAMPITIYASECANTPILEWALLPROJECT钻掘及现场照片DRILLINGANDSITEPHOTO准备护筒连结,清理螺孔并上黄油Prepareforcasingconnection.Cleanandgreasetheconnectingscrew上螺栓并锁紧Tightconicalbolts.MADAMPITIYASECANTPILEWALLPROJECT钻掘及现场照片DRILLINGANDSITEPHOTO护筒连结完成,旋进时随时以水平尺检测护筒X向及Y向的垂直度CheckcasingverticalitywithspritlevelMADAMPITIYASECANTPILEWALLPROJECT钻掘及现场照片DRILLINGANDSITEPHOTO使用取土短螺旋鑽一直鑽掘到岩盤表面,最後0.5~1.0米的崁岩由岩芯鑽搭配崁岩旋挖斗完成.鑽掘18~20m深的樁約耗費3.5~4.0小時,(包括護筒連接並下護筒的時間)DrilldowntotherocksurfacewithsoilaugerSBonly.0.5m~1.0mrocksocketingexecutedbyKRRcorebarrel+KBF-Krockbucket.Drillingfor18~20mdeeppilefor3.5~4.0hoursonly(includecasingconnecting).MADAMPITIYASECANTPILEWALLPROJECT钻掘及现场照片DRILLINGANDSITEPHOTOMADAMPITIYASECANTPILEWALLPROJECT崁岩ROCKSUCKETING在第一座二期孔H57由岩芯钻KRR取出1米长的岩芯,微风化岩块估计岩石强度超过50MPa.1meterlongcoretakenbyKRRatfirstsecondarypileH57.Slightlyweathered...
