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Localizacin de la obra
Piled Foundation for the Chiapas Bridge
in Mexico
Wolfgang G. Brunner
Maschinen
God Morgen mine Damer og Herrer !
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Localizacin de la obraLocation of State Chiapas in Mexico
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Localizacin de la obraState Chiapas in Mexico
Chiapas BridgeChiapas Bridge
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Localizacin de la obra
OaxacaOaxacaChiapasChiapas
VeracruzVeracruz
Puente ChiapasPuente Chiapas
Procedimiento no. 1Procedimiento no. 1Chiapas 1
Procedimiento no. 2Procedimiento no. 2Chiapas 2
Location of the Jobsite
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Datos generales de proyectoData of Chiapas Bridge
Length 1208 m
Height above water 10 m
Maximum total length of
drilling string 148.5 m
Maximum water depth 92.5 m
Drilling depth 56.0 m
Contract amount including
VAT 100 million US $
Execution period of
foundation 7 month
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Datos generales de proyectoConstruction of Pier Foundations
Stage 1:Fabrication on land of steel jacket on its side comprising four 2.80
m dia. steel tubes and struts.Stage 2:Floating jacket into position of pier with side buoyancy tanks.Stage 3:
Up-ending of jacketDriving four 1000 mm dia. tubular support leg piles withstructural connections to jacket.Stage 4:Construction of working platform on top of jackets, liftinghydraulic casing oscillator onto platform and fixing it ontoplatform. Installation of 2500 mm dia. drill casing comprising asacrificial section jointed onto the bottom of the main casingsection.
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Datos generales de proyectoConstruction of Pier Foundations
Stage 5:Mounting and connecting BA 2500 top drill on drill casing.
Stage 6:Installation of drill head, ballast rods and air-lift pipe assemblywith casing guides.Stage 7:
Drilling down with air-lift flushing as the casing oscillator rotatesthe 2500 mm dia. drill casing and jacks it down with its powerfulhydraulic rams.In order to reduce the frictional resistance on the drill casing,three hydraulically operated roller bits are extend laterally duringdrilling. They underream the casing shoe.Embedment of drill casing in conglomerate up to 20m.Stage 8:Drilling with fully extended roller bits to final depth.
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Datos generales de proyectoConstruction of Pier Foundations
Stage 9:Lifting top drill off drill casing, removing drill string and drill head.
Cutting drill casing inside steel jacket tube approximately 5 mabove bottom end of steel tube.Stage 10:Raising upper section of drill casing and holding it in position withcasing oscillator.Stage 11:Installation of reinforcement cage, which extends from the base ofthe pile to 5 m above the top of the enlarged pile head.Stage 12:
Lowering tremie pipe assembly into drill casing and concretingpile to top of reinforcing cage.Stage 13:Extracting upper drill casing string.
Stage 14:Constructing remaining three piles.
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Steel Jackets:
Fabrication
Launching
Floating into Position
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Jacket Manufacturing Yard
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Fabricacin de jacketsFabrication of Jackets
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step 1: pull jacket
step 1: retract jacket
step 1: float jacket
winch
Launching of Jacket
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Botado de los jackets 8, 7, 6 y 5
Jacket no 7Jacket no 8
Jacket no 5Jacket no 6
Launching of Jacket
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Step 1: float to position
Step 5: remove floating body
Step 3: continue turningStep 2: turn through water inflow
Step 4: vertical position Step 6: install steel pileswith diesel hammer
Floating Jacket into Position
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Transporte
length70m
Floating Jacket into Position
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Ziele der BodenverbesserungFloating Jacket into Position
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Drilling with RC DrillDrilling with RC Drill:
Installation of Casing
Mounting of RC Drill
Drilling in Conglomerate and Rock
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Principle of RC (Reverse Circulation) System
0
-20
-20/25
-30/35
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Preparation of Drill Casing
Dia 2500 mm
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Installation of Casing with Oscillator
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Installation of Casing and RCD Drill
RC Drill BA 2500
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Installation of Casing and Drilling into Rock
oscillator BV 2500
casing dia 2500 mm
Rock
RCD drill rig BA 2500
open hole drilling
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Stabilizer and Flanged Drill Pipes
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Stabilizer and Flanged Drill Pipe
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Stabilizer and Flanged Drill Pipe
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Drilling with RC Drill and Oscillator
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Drilling with RC Drill and Oscillator
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movable
roller
hydraulic power pack for movingout the underreamer rollers
rock
casing
Underreaming the Casing during Drilling
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Drilling at Jacket No. 8
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oscillator BV 2500
casing dia 2500 mm
Rock
cutting drill casing with diver, max water depth 80 mand recover the cut off casing section
Remove Casing
cut casing by diver
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Completion of Pile:Completion of Pile:
Installation of Reinforcement Cage
Placing Concrete
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Pipes for concrete
inspection
Installation of Reinforcement Cage
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Installation of Reinforcement Cage
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Installation of Reinforcement Cage
casing dia 2500 mm
Rock
placing reinforcement cage into the borehole
uncased bore in rock
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Concreting the Pile
conc
rete
concrete
tremie pipe
casing dia 2500 mm
Rockuncased bore in rock
conc
rete
concrete
C S
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Concrete Pipe Line from the Shore to the Pier
R k d Pil
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Raked Piles
Pile diameter: 1300 mm Inclination: 1: 3Pile length: up to 50 m
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Bridge Deck ConstructionBridge Deck Construction:
Construction of Pier Heads
Pushing Bridge Deck
C ti f Pi H d
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Concreting of Pier Head
Concreting of Pier Head
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22.7.2000
Concreting of Pier Head
Concreting of Pier Head
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Concreting of Pier Head
Concreting of Pier Head
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Concreting of Pier Head
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Pier Overview
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Pier 8
Pier 7
Pier 6
Pier Overview
Installation of Bridge Deck by Jacking
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Installation of Bridge Deck by Jacking
Abutment9
152.0 m
Pier6
Pier7
Pier8
Abutment9
152.0 m
Pier6
Pier7
Pier8
jacking attachment
Fabricacin de dovelasInstallation of Bridge Deck by Jacking
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Installation of Bridge Deck by Jacking
Fabricacin de dovelasCompleted Chiapas Bridge
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Completed Chiapas Bridge
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Thank you for your kind attention !
Takk for Oppmerksomheten !
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