Ground Improvement Solutions for TC 211 IS GI Brussels 2012 the - PowerPoint PPT Presentation

geotecnia Ground Improvement Solutions for TC 211 – IS – GI Brussels 2012 the new Cruise Terminal in Lisbon Alexandre Pinto , apinto@jetsj.pt Rui Tomásio , rotomasio@jetsj.pt João Ravasco , jmravasco@somague.pt Session S7 – Biogrout & Other Grouting Methods, 1 st June 2012

geotecnia OUTLINE  Introduction  Main constraints TC 211 – IS – GI Brussels 2012  Quay walls refurbishment and underpinning  Landfill foundations  Design  Monitoring and survey  Quality control / quality assurance  Alternative solutions  Conclusion remarks

geotecnia Lisbon TC 211 – IS – GI Brussels 2012 Tagus River N Tagus River Site Location

geotecnia TC 211 – IS – GI Brussels 2012 Existent quay wall to be close and refurbished Dockyard on high tide before the filling works

geotecnia TC 211 – IS – GI Brussels 2012 Perspective of the new Cruise Alfama Hill Terminal

geotecnia TC 211 – IS – GI Brussels 2012 Perspectives of the new Cruise Terminal

geotecnia TC 211 – IS – GI Brussels 2012 Existent quay wall to be close and refurbished Dockyard before New quay deck: the filling works reinforced concrete slab, over bored piles

geotecnia OUTLINE  Introduction  Main constraints TC 211 – IS – GI Brussels 2012  Quay walls refurbishment and underpinning  Landfill foundations  Design  Monitoring and survey  Quality control / quality assurance  Alternative solutions  Conclusion remarks

geotecnia Centenary buildings TC 211 – IS – GI Brussels 2012 Water supply f 1,0m pipe Metro tunnel Centenary masonry quay walls Dockyard before the earth works

geotecnia GEOLOGICAL PROFILE Centenary Centenary masonry buildings quay walls Water supply TC 211 – IS – GI Brussels 2012 f 1,0m pipe Tagus Dockyard (before River earth works) Fil l Alluvium (Cu<20kPa) Muddy sands (N SPT <12) Miocene (N SPT >50)

geotecnia TC 211 – IS – GI Brussels 2012 Earth works in difficult conditions

geotecnia TC 211 – IS – GI Brussels 2012 Jet grouting works in difficult conditions

geotecnia OUTLINE  Introduction  Main constraints TC 211 – IS – GI Brussels 2012  Quay walls refurbishment and underpinning  Landfill foundations  Design  Monitoring and survey  Quality control / quality assurance  Alternative solutions  Conclusion remarks

New quay deck Reinforced concrete slab and beams reinforced concrete slab LTP Existent TC 211 – IS – GI Brussels 2012 centenary Alluvium masonry quay wall Cross section of Muddy sands the adopted solution Self drilling micropiles sealed inside jet grouting Miocene columns

geotecnia TC 211 – IS – GI Brussels 2012 Refurbishment and underpinning micropiles at the top of the existent quay wall

geotecnia Quay wall refurbishment and underpinning beams TC 211 – IS – GI Brussels 2012

geotecnia Quay wall refurbishment and underpinning beams TC 211 – IS – GI Brussels 2012

geotecnia OUTLINE  Introduction  Main constraints TC 211 – IS – GI Brussels 2012  Quay walls refurbishment and underpinning  Landfill foundations  Design  Monitoring and survey  Quality control / quality assurance  Alternative solutions  Conclusion remarks

Quay wall New quay deck reinforced Fill concrete slab closing structure LTP Sheet piles Tagus Self drilling River TC 211 – IS – GI Brussels 2012 micropiles sealed inside Piles jet grouting columns Alluvium Muddy sands Miocene

geotecnia Quay wall TC 211 – IS – GI Brussels 2012 Quay wall closing structure Quay wall

Jet grouting Cross section of the wall adopted solution Landfil l Fil l LTP Alluvium TC 211 – IS – GI Brussels 2012 Muddy sands Jet grouting Miocene columns Plan of the adopted solution

geotecnia TC 211 – IS – GI Brussels 2012 Installation of geogrids

geotecnia TC 211 – IS – GI Brussels 2012 Installation of geogrids

geotecnia TC 211 – IS – GI Brussels 2012 Landfill works on low tide

geotecnia TC 211 – IS – GI Brussels 2012 Landfill works on low tide

geotecnia Landfill works after conclusion TC 211 – IS – GI Brussels 2012

geotecnia OUTLINE  Introduction  Main constraints TC 211 – IS – GI Brussels 2012  Quay walls refurbishment and underpinning  Landfill foundations  Design  Monitoring and survey  Quality control / quality assurance  Alternative solutions  Conclusion remarks

LTP base vertical 3D FEM MODEL displacements TC 211 – IS – GI Brussels 2012 Loads at the surface LTP Muddy alluvium Jet grouting columns Sandy alluvium Miocene: dense sand and sandstone

geotecnia TC 211 – IS – GI Brussels 2012 Plan where the results were obtained Vertical displacements: max 76mm Vertical effective stresses

geotecnia OUTLINE  Introduction  Main constraints TC 211 – IS – GI Brussels 2012  Quay walls refurbishment and underpinning  Landfill foundations  Design  Monitoring and survey  Quality control / quality assurance  Alternative solutions  Conclusion remarks

TC 211 – IS – GI Brussels 2012 Topographic mark geotecnia

TC 211 – IS – GI Brussels 2012 -0,40 -0,35 -0,30 -0,25 -0,20 -0,15 -0,10 -0,05 at the landfill base [m] Vertical displacements 0,00 Topographic marks at the landfill base 3-dez 18-dez 2-jan +1,5 [m] 17-jan 1-fev 16-fev 3-mar 18-mar 2-abr 17-abr 2-mai 17-mai 1-jun 16-jun 1-jul 16-jul 31-jul 15-ago 30-ago +5,7 [m] 14-set 29-set

TC 211 – IS – GI Brussels 2012 Pressure at the load cell [kg/cm 2 ] 4,2m of landfill height [19 kg/cm2] Jet Grouting design pressure for Landfill height = 3,0m (0,60MPa)

geotecnia TC 211 – IS – GI Brussels 2012 Installation of rod extensometer at the LTP geogrid

geotecnia OUTLINE  Introduction  Main constraints TC 211 – IS – GI Brussels 2012  Quay walls refurbishment and underpinning  Landfill foundations  Design  Monitoring and survey  Quality control / quality assurance  Alternative solutions  Conclusion remarks

geotecnia TC 211 – IS – GI Brussels 2012 Cores gathering for UCS tests UCS tests

geotecnia TC 211 – IS – GI Brussels 2012 Jet grouting columns Jet grouting columns full core collection length core samples

geotecnia Jet grouting parameters registration TC 211 – IS – GI Brussels 2012

geotecnia Vertical Full Scale TC 211 – IS – GI Brussels 2012 Load Tests

Vertical Head Load [kN] 0 1000 3000 4000 2000 5000 0 5 TC 211 – IS – GI Brussels 2012 10 Depth [m] 15 20 25

geotecnia 7000 7000 Vertical load [kN] 3 rd cycle 6000 6000 5000 5000 2 nd cycle 4000 4000 Carga (kN) 3000 3000 Service load 2000 1 st cycle 2000 1000 1000 0 0 30,0 0,00 5,00 10,00 15,00 20,00 25,0 25,00 30,00 5,0 10,0 15,0 20,0 0 Deslocamento (mm) Vertical Head displacement [mm]

geotecnia Horizontal Full Scale Load Tests TC 211 – IS – GI Brussels 2012

geotecnia 700 700 600 600 500 500 TC 211 – IS – GI Brussels 2012 Horizontal Load [kN] 400 400 Carga (kN) 300 300 200 200 100 100 0 -20,0 -10,0 -20,00 -10,00 0,00 0,0 10,00 20,00 30,00 40,00 50,00 10,0 20,0 30,0 40,0 50,0 Deslocamento (mm) Horizontal Head Displacement [mm]

geotecnia 120.000 Horizontal stifness 100.000 [kN/m] TC 211 – IS – GI Brussels 2012 80.000 60.000 40.000 20.000 0 100 200 600 300 400 500 Horizontal load [kN]

geotecnia OUTLINE  Introduction  Main constraints TC 211 – IS – GI Brussels 2012  Quay walls refurbishment and underpinning  Landfill foundations  Design  Monitoring and survey  Quality control / quality assurance  Alternative solutions  Conclusion remarks

Uniform settlements mainly Settlements with time during earth works TC 211 – IS – GI Brussels 2012 Jet Stone Geodrains Driven piles grouting / columns or Deep soil micropiles mixing columns Bed Rock Preloading Drainage Bearing capacity Foundation stiffness: LTP demanding

TC 211 – IS – GI Brussels 2012 OUTLINE geotecnia

geotecnia OUTLINE  Introduction  Main constraints TC 211 – IS – GI Brussels 2012  Quay walls refurbishment and underpinning  Landfill foundations  Design  Monitoring and survey  Quality control / quality assurance  Alternative solutions  Conclusion remarks

geotecnia CONCLUSION REMARKS  BIG VERSATILITY TC 211 – IS – GI Brussels 2012

geotecnia CONCLUSION REMARKS  BIG VERSATILITY  POSSIBILTY TO REINFORCE TC 211 – IS – GI Brussels 2012 THE COLUMNS WITH STEEL PROFILES / MICROPILES

geotecnia CONCLUSION REMARKS  BIG VERSATILITY  POSSIBILTY TO REINFORCE TC 211 – IS – GI Brussels 2012 THE COLUMNS WITH STEEL PROFILES / MICROPILES  NO NEED FOR PRELOADING ON SOFT SOILS

geotecnia CONCLUSION REMARKS  BIG VERSATILITY  POSSIBILTY TO REINFORCE TC 211 – IS – GI Brussels 2012 THE COLUMNS WITH STEEL PROFILES  NO NEED FOR PRELOADING ON SOFT SOILS  ENVIRONMENTAL ADVANTAGES