05 Ellman PPT muro colado

7/23/2019 05 Ellman PPT muro colado

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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


2/22

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


4/22

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


7/22

13

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


8/22

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


9/22

17

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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23

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


14/22

27

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


16/22

31Feb

16,

2012

ConventionCenter

32July

17,

2012


17/22

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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37

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

05 Ellman PPT muro colado

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