Digital Data Its use in geotechnical design

& execu2on

DrDerekEgan

Director

RemedyGeotechnicsLtd

www.remedygeotechnics.com

Digital Data - Use in geotechnical design & execu2on

•  Introduc7on• Aimsofthepresenta7on• Downamongstthedata

Digital Data - Use in geotechnical design & execu2on

BIM–BuildingInforma7onModelling•  Possibleduetothedigitalrevolu7on•  Buthowfarhasitpenetratedintogeotechnicaldesign•  Howfarhasitpenetratedingeotechnicalexecu7on?

Aim–toconsiderthegeotechnicaldatajourney•  Howfardoesitcurrentlygo?•  Howfarcoulditgo?

Digital Data - Use in geotechnical design & execu2on Thegeotechnicaldatajourney…

Chandler&Hutchinson(1998)

Butevennowthemodeldoesnotcoverthefullgeotechnicalprocess

Childetal.(2014)

Digital Data - Use in geotechnical design & execu2on Thegeotechnicaldatajourney…extended

SIFieldLogging

SILabtes7ng&repor7ng

GeotechnicalDesign

SchedulingGeotechnical

Works

Construc6onRecords

ArchiveforAsBuilts&FutureUse

Feedback

Chandler&HuchinsonAnd

Childsetal.

Construc6onControl

Digital Data – Geotechnical design

Whatarethebarriers?•  Ignoranceofthebenefitsofagsdataoutsideofthegeotechnicalworld•  Concernsoverliabilityoveralong/convolutedsupplychain•  SoWware&trainingexpenseifrarelyused

DesignData•  FPSpileschedule–rarelyused–why?

Analysis&visualisa7ontools•  agsdata+soWware–interac7ve3Dgroundmodels•  Soilparameterderiva7on

Whatdigitaldataisusefulforthefounda7ondesigner?

SIdata•  FPSsurvey(Egan,2008)–zero/221hadagsdatafilesprovided•  Experiencesuggeststhesitua7onnobe\ernow

Digital Data – Scheduling & execu2on Rigoperatorguidedtoundertakeexecu7on,suchas:-

•  Loca7oncoordinatesbyGPS•  Pileorcolumnlength,liWspeed,etc.displayed•  Rigcomputerscreenshows‘tramlines’toassistoperator,orcanuseautobore/

autoconcrete(CFA)orotherautomatedexecu7onprocesses

Telemetryallows:-•  near‘RealTime’reviewinremoteoffice–usefulforsayundertakingtrialdrives

indrivenpiling•  Saferemotestorageofdata

Digital Data – Execu2on records Riginstrumenta7onsystemscollectsexecu7ondata

•  Date,7me,rateofpenetra7on,mastinclina7on,crowdforce,concrete/bindersupply,numberofhammerblowsandpilepenetra7onetc.dependingonfounda7ontechnique

•  Nicegraphicalplotsrou7nelyprovided

Telemetry/internetallows:-•  Thirdpartyaccessto‘AsBuilt’data(some7mesviewedwithsuspicion

bythecontractor)•  Couldevenhaveatriggerwarningwhensomethingisnotright

EnablesfurtheranalysisofAsBuiltdata/incorpora7onintoBIMmodel,forexample:-

•  Plogngcontoursofdrivenpiledepths•  Reviewingjetgroutcolumnlayouts

Digital Data – Execu2on records

MadeGround

Alluvium

RiverTerraceDeposits

(a) (c)(b)

Egan(2014)

Digital Data – Plant instrumenta2on

Anumberofbrandedsystemsavailable.Challengesinclude:-

•  Harshworkingenvironment–robustsensorsandcablingrequired•  Calibra7on–howoWenisthisactuallydone?….andrecorded?•  Whathappenswheninstrumenta7onfails–doestherighavetostop

&thedilemmathisimposes•  CulturalshiWs…..residualLudditethinkingoccasionallyemerges•  Cost&7meinvestment

Benefitsinclude:-•  Consistentandreliabledatacollec7onandstorage•  Moreefficientexecu7on(faster,morecontrolled,lesswaste,more

sustainable,easierQA)•  Easierdissemina7onofdataaroundtheprojectteamand

stakeholders(includingintoBIMmodel)

Digital Data – The feedback loop

ComparingtheAsBuiltdatawiththedesigninforma7on.Example–VictoriaSta7onUpgrade–JetGrou7ng

Digital Data – The feedback loop

ComparingtheAsBuiltdatawiththedesigninforma7on.Example–VictoriaSta7onUpgrade–JetGrou7ng

Digital Data – Design

Reference PileGeometry EC7Ver7calAc7ons EC7HorizontalAc7ons PileDesign

PileRef

LoadingRef

DrawingRef

PileType

PileCapRef

Cut-offLevel(mOD)

PilingPlaHormLevel(mOD)

PileDiameter(mm)

DesignEas6ng(m)

DesignNorthing

(m)

Ver6cal/RakingAngle(°)

Gk(kN)

Qk,l(kN)

Qk,wind(kN)

Qk,i(kN)

Qk,j(kN)

Tk(kN)

Ad(kN)

Gk,m(kNm)

Qk,m(kNm)

DA1Comb1

(ULS-STR)Ed,max(kN)

DA1Comb1

(ULS-STR)Ed,min(kN)

DA1Comb2

(ULS-GEO)Ed,max(kN)

DA1Comb2

(ULS-GEO)Ed,min(kN)

Gk(kN)

Qk,l(kN)

Qk,wind(kN)

Ad(kN)

DA1Comb1

(ULS-STR)Ed,max(kN)

DA1Comb2

(ULS-GEO)Ed,max(kN)

PileToeLevel(mOD)

MinSteelProjec6onaboveCOL

(m)

TopofSteelLevel(mOD)

NoofMainBars

MainBarDiameter(mm)

MainBarLength(m)

ShearBarDiameter(mm)

ShearPitch(mm)

ShearType(Helical/Link)

CFApilingexample:-i.  Pileschedulepassedfromschemedesignertopiledesignerdigitally(e.g.FPS

ElectronicPileSchedule–pileNo.,loads,coordinates,cut-offleveletc)ii.  Designerupdateswithoutputfromdesign(length,diameter,rebaretc)

Digital Data – Scheduling CFApilingexample:-i.  Pileschedulepassedfromschemedesignertopiledesignerdigitally(e.g.FPS

ElectronicPileSchedule–pileNo.,loads,coordinates,cut-offleveletc)ii.  Designerupdateswithoutputfromdesign(length,diameter,rebaretc)iii.  execu7ondataextractedandsenttoriginexcelformat

Digital Data – execu2on control CFApilingexample:-i.  Pileschedulepassedfromschemedesignertopiledesignerdigitally(e.g.FPS

ElectronicPileSchedule–pileNo.,loads,coordinates,cut-offleveletc)ii.  Designerupdateswithoutputfromdesign(length,diameter,rebaretc)iii.  Construc7ondataextractedandsenttoriginexcelformativ.  Asrigconstructsthepilethedatafileisupdatedwithconstruc7onparametersto

give‘AsBuilt’record(date,7me,boring&liWspeed,augerrota7on,concretesupplyetc)

{couldevenhaverebartagged/barcodedandscannedintodatafile}

Digital Data – execu2on records CFApilingexample:-i.  Pileschedulepassedfromschemedesignertopiledesignerdigitally(e.g.FPS

ElectronicPileSchedule–pileNo.,loads,coordinates,cut-offleveletc)ii.  Designerupdateswithoutputfromdesign(length,diameter,rebaretc)iii.  Construc7ondataextractedandsenttoriginexcelformativ.  Asrigconstructsthepilethedatafileisupdatedwithconstruc7onparametersto

give‘AsBuilt’record(date,7me,boring&liWspeed,augerrota7on,concretesupplyetc)

{couldevenhaverebartagged/barcodedandscannedintodatafile}i.  AsBuiltinforma7onthenavailablefor‘real7me’reviewanddownloadintoBIM

model(canaddfurtherinforma7on–e.g.AsBuiltcoordinatesetc).

Digital Data – execu2on records

Digital Data - Use in geotechnical design & execu2on - Summary Thegeotechnicaldatajourney

SIFieldLogging

SILabtes7ng&repor7ng

GeotechnicalDesign

SchedulingGeotechnical

Works

Construc6onRecords

ArchiveforAsBuilts&FutureUse

Feedback

Chandler&HuchinsonAnd

Childsetal.

Construc6onControl

….extended

Digital Data - Use in geotechnical design & execu2on

Thechallenge……howdowebreakdownthebarriersandextendthejourney???

BIM–BuildingInforma7onModelling•  Buthowfarhasitpenetratedintogeotechnicaldesign&execu7on?

www.remedygeotechnics.com

ThankyouforlisteningDerekEganRemedyGeotechnicsLtd

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