Bored Piling Method Statement 灌注桩施工方案

《Bored Piling Method Statement 灌注桩施工方案》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、MethodStatementforBoredPileTableofContents1.0General2.0Settingout3.0Drilling4.0PilesTermination5.0ClearingofPileBase6.0InstallationofReinforcement7.0PlacingofConcrete8.0TestingofConcrete9.0PossibleProblemsEncountered10.0NoiseAndVibration11.0HazardAnalysis12.0Methodof

2、LocatingAndAvoidanceofUtilityServices13.0BoredPileRecordSheets7MethodStatementforBoredPile1.0GeneralThegeneralsequenceforboredpileworksisshownasbelow:-Figure1:FlowChartForBoredPileProcess2.0SettingOutInhousesurveyorwillsetoutthepilelocationwithreferencetothecontrolpo

3、intestablishedbythelicensedsurveyor.Priortoboring,thepilepointshallbecheckedandoffsetalongthe2mainaxisforcheckinganydeviationduringinitialboring.7MethodStatementforBoredPile1.0DrillingBeforeboring,thesupervisor/projectmanagershallverifyallassociatedtechnicalinformati

4、onsuchaspresenceofservices,pileco-ordinates,platformlevel,cut-offlevel,validityofdrawingsandetc.Thepileboringoperationswillbeperformedbytheflightaugerorboringbucketattachedtoahydraulicdrillingunitwhichismountedonacrawlercrane.Theverticalityofboredholewillbecheckedfro

5、mtimetotimefromthetopwhileadvancingtheboredhole.SightingplumblineshallbeusedtochecktheverticalityoftheKellybarofboringmachineagainst2majoraxis.Thecheckingshallbecarriedoutbeforeandduringboringprocessatregularintervaltoensureboringholeisconstructedandcompletedwithinto

6、lerance.BoredHoleSteelRodBoringMachinemin.1200mmHTStringKellyBarPlumbBobSightingPoint45oDetailofSightingPoint_Steelcasingofadequatethicknessshallbeusedtopreventunstablesoilfromcavingintotheboredholeforthefirst6~12mofthesoilstrata.Thecasingwillbeinstalledbyvibratingha

7、mmerordrivenbytheboringrig.Watershallbeutilisedasamediumstabalisingfluidintheprocessofformingtheborehole.Duringtheboringprocess,thewaterlevelshallbekeptashighaspossiblewithinthecasingandwellabovetheexistinggroundwaterlevel.Rockdrillingtoolsorchiselsshallbeusedtodrill

8、intorock.Theclerkofworkorengineershallbeverifiedthelengthofactuallengthofboringintorock.Theboredlengthcanbecheckedwithmeasuringtape