05 ellman ppt muro colado
TRANSCRIPT
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RodericA.Ellman,Jr.,PE,PartnerMueserRutledgeConsultingEngineers
NewYork,NY
DFISlurryWallSeminar:DiaphragmWallinUrbanEnvironment
July26,2012,Detroit,MI
Design&Construction
of97ft deepBasementbyTopDownMethod:MarriottMarquisConventionCenterHotel
Washington,DC
2
Renderings of DC
Marriott Marquis
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3
10thStreet.
LStreet
9thStreet
Plumbers Building at South East End of Site
July9,2008
PlumbersBuilding
4
WalterE.WashingtonConvention
Center
Location
MarriottMarquis
Site
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Site Plan
LStreet
N.W.
9thStreetN.W.
10thStreetN.W.
PEPCOBuilding(PotomacElectric
PowerCompany)
MARRIOTT
MARQUIS
propertyline
PlumbersBldg.
DuctBank(PowerSupply
forGovt.Bldgs.)
WalterE.
Washington
ConventionCenter
2StoryDemolition
5
FutureMarriottMarquissite
September
2002
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7
Alternates Studied
Cross Lot Bracing
Tie-Back Soil Anchors
Raker Braces
Top-Down Construction
8
Diaphragm Wall & Drilled Shafts Layout Plan
LStreetN.W.
9thStreetN.W.
10thStreetN.W.
PEPCOBuilding
WalterE.
Washington
ConventionCenter
Diaphragm(Slurry)Wall
TemporaryNewTiebacks(Anchors)EL.+66only
DrilledIn
Shafts
with
PlungedSteelColumns TemporaryDetensioned
Tiebacks
used
duringConventionCenterConstruction
ConventionCenterSlurryWall
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9
1. Install guide
walls
2. Excavate panel
3. Desandexcavated panel
4. Install rebar cage
5. Place concrete
Slurry Wall Construction
10
End Stops Used In Slurry Wall Construction
Hydromill Joint(93 Panels)
WaterStopJoint(UsedAlong9th Street)(20 to24 Panels)
SteelBeam(w)Joint(usedbelowshallowutilities)
Hydromill Bite
KEYP=PrimaryPanelS=SecondaryPanelF=FollowupPanel
6Min.
PVCWaterstop
PP
BlockOutRemovedDuringSecondaryPanelExcavation
EndStopPulledLaterallyIntoFollowUpExcavation
P S P
S P S
F P
JointPositionJointPosition
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11
Protection & Monitoring of Existing BuildingDuring Slurry Wall Construction
BelledPier
PEPCOBuilding
TiltMeters(MonitoringPoints)
Plywoodon2 x4Spacedat4 c.c.
SlurryWallUnderConstruction
12
Top-Down Method of Construction: Sequence
Install slurry wall & drilled shafts / basementplunge columns
Excavate to 1st basement level & constructbasement floor as brace
Excavate below floor; install 2nd basement floor
Install girders above ballrooms
Begin superstructure construction
Continue to progressively excavate & constructpermanent underground floors as bracing
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Top-Down Method of Construction:Benefits
Ideal for urban sites, deep excavations & wideconstruction sites
Stiff bracing system minimizes impact on adjacentstructures
Avoids costly underpinning of adjacent structures
Speeds up project completion as superstructurestarts before excavation is completed
Reduces project financing costs
14
TERRACESAND
FILL
EL.70to77
Diaphragm (Slurry) Wall Construction
EL.50to65
EL.22to40
EL.30to 20
EL. 50to 60
GuideWalls
HARDCLAY
DENSESAND
BEDROCK
(Supports Exterior of Building)
TipEL. 38to 47
GroundwaterEL.35
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15
Drilled Shaft Constructionand Plunge Columns Installation
FinalSubgrade
PlungeSteelColumn(InteriorSupportColumns)
DrilledShaftConcretedtoFinalExcavationSubgrade
EL.70to77
EL.50to65
EL.22to40
EL.30to 20
EL. 50to 60
GroundwaterEL.35
TERRACESAND
FILL
HARDCLAY
DENSESAND
BEDROCK
Plunge Steel Columns Installed
July
17,
2012
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CompactSoilandApplyBondBreaker
Excavation for 1st Basement Slab Construction
WeldSteelBracketto
Column
EL.70to77
EL.50to65
EL.22to40
EL.30to 20
EL. 50to 60
GroundwaterEL.35
TERRACESAND
FILL
HARDCLAY
DENSESAND
BEDROCK
18
CreateOpeninginSlabforUnderslabExcavation
Construct 1st Basement Slab
S1
EL.70to77
EL.50to65
EL.22to40
EL.30to 20
EL. 50to 60
GroundwaterEL.35
TERRACESAND
FILL
HARDCLAY
DENSESAND
BEDROCK
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19
ExcavateUnderSlabandConstruct2nd
BasementSlab
Excavation for 2nd Basement Slab Construction
S1
EL.70to77
EL.50to65
EL.22to40
EL.30to 20
EL. 50to 60
GroundwaterEL.35
SAND
FILL
HARDCLAY
DENSESAND
BEDROCK
20
Section Looking West
UpperBallroom
EL.+70
EL. 11EL. 13
LowerBallroom
ParkingGarage
Parking Mechanical
Mass.
Ave.
LStreet
10thStreet
LStreet
9thStreet
TemporaryTiebackAnchors
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Section Looking North
Grand(Upper)Ballroom
ParkingGarage (EL. 17.0)Junior
Ballroom
Junior
Ballroom
PEPCOBuilding
LimitofConventionCenter
Convention
CenterConnector
9th Street
10thStreet
LStreet
9thStreet
22
Underslab Drainage System Lower Level
FinishFloorEL 7.0
FinishFloorEL 16.0
DrainLinesUnderSlab
OnGrade
CleanUpPoint
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Plan at Parking Garage (EL. -7.0)
HelicalRampShaft
24
Truck Loading Dock Cut-Off Openings in Slurry Walls
J
G
MB
G.5
RG
F
R4
10 11 12
E
RE
A
B
C
B.9
C.7
D
D.3
H.2
H
HotelSlurryWall
withCutOff
Openingsfor
LoadingDock
ExistingBracingStrutsforConvention CenterSlurryWall
ConventionCenterSlurryWallwithCutOffOpeningsforLoadingDock
9
th
StreetAbove
TruckBays ExcavationSequence
1. Installpairedhydraulicjacksforeachstrut
2. Incrementallyloadjackstofullload
3. Disconnectthebracingsystemfromslurrywall
4. Sequentiallyexcavate
in
5footlifts.Releasejackloads5kipsforeach5feetofexcavation.
5. Afterexcavationiscomplete,shimandgroutbetweenwallandwalesandremovejacks.
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PlumbersBuilding
Convention Center Construction
July
2000
26
Convention Center Slurry Wall Looking West
ConstructionProcedure1. Cut40 WideSlotatPanelJoints2. PlaceStubColumnsinSlotsforPanelSupport3. CutOffandFormOpenings
NeedleBeam
Passagewayto
New
Elevator
inConventionCenter
OpeningforEscalatorConnection
PermanentGirderSupport
TruckRamp
CutOffOpeninginExisting
SlurryWall
20 (TYP)
EL.+50
EL.+32
4PanelJoint
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PEPCOBuilding
HelicalRampShaft
HydroMill
DrilledShaftRig
Looking North at West End of Site
September
15,
2011
Helical Ramp Shaft :
Shaft Excavation
September
15,
2011
PEPCOBuilding
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February
16,
2012October19,2011
Helical Ramp Shaft :Inner Shaft Constructed
July
17,
2012
October
19,
2011
Helical Ramp Shaft :
Ramp SlabUnder Construction
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31Feb
16,
2012
ConventionCenter
32July
17,
2012
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33Feb
16,
2012
ExcavationOpenings
S1SlabCompleted
PreparationforS2Slab
34Feb
16,
2012
ExcavationOpening
S1SlabCompleted
PreparationforS2Slab
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35April
19,
2012
ExcavationforGrandBallroom
PlateGirdersSpanningBallroomBelow
36
April
19,
2012
Excavation and Material Supply Openings
in Completed Slab
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Excavator withMuck Bucket
July
17,
2012
38April
19,
2012
Excavation on Multiple Levels
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39April
19,
2012
Excavation onMultiple Levels
40April
19,
2012
HelicalRampShaft
PlateGirdersSpanningBallroomBelow
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41April
19,
2012
42
Conclusions
Innovative use of Top-Down Constructionresulted in the successful 97deep excavation
Use of hydro-mill to install water stop shearkeys simplified slurry wall construction
Benefits of Top-Down Construction include:
Resulting stiff bracing system eliminating needto underpin adjacent structures
Simultaneous construction below and abovegrade resulting in shorter constructionschedule and lower project costs
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DC Marriott Marquis Team
Owner: Marriott International
Architect: Cooper Carry ArchitectsTVS Architects JV
Construction Manager: Hensel Phelps Construction Co.
Structural Engineering: Thornton Tomasetti
Slurry Wall / Tie back anchor
Subcontractor:
Geotechnical /Foundation Engineering:
Mueser Rutledge
Consulting Engineers
East Coast Slurry Company /
Trevi Icos JV
Mueser Rutledge Consult ing
Engineers14 Penn Plaza, 225 W. 34th St NY, NY 10122
T: 917 339-9300 F: 917 339-9400
www.mrce.com