PANAMA CANAL THIRD SET OF LOCKS PROJECT Structural Design - PowerPoint PPT Presentation

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PANAMA CANAL THIRD SET OF LOCKS PROJECT Structural Design

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  1. PANAMA CANALTHIRD SET OF LOCKS PROJECTStructural Design Pablo Arecco Civil Engineer Buenos Aires, Argentina PIANC Setting the course

  2. Panama Canal Location

  3. April 2006 – High season 111 Vessels waiting Waiting time: 10 days June 2004 119 Vessels waiting Waiting time: 7 daysCause: Maintenance activities NEW LOCKS 12,600 TEU’s EXISTING LOCKS 4,400 TEU’s

  4. Third Set of Locks render - Pacific Locks Complex

  5. Atlantic Locks complex Upper Chamber Middle Chamber Lower Chamber Lock Head 4 Three Lock Chambers and four Lock Heads in each site (Atlantic and Pacific)

  6. TENDER DESIGN ANALYSIS Stability analysis Backfill Rock Concrete 2D simplified Finite Element Model

  7. LOCK CHAMBER CONCRETE STRUCTURE Lock Head 3D FE model Lock Wall 3D FE model Lock Wall 2D FE model Issues to solve for Finite Element (FE) modeling

  8. FINAL DESIGN FINITE ELEMENT MODELLING Lock Wall Typical Monolith Final concrete volumes: Lock walls ≈ 2.100.000 m3 Lock heads ≈ 1.200.000 m3 HOW TO DEVELOP THE FINAL DESIGN FEM?

  9. FINAL DESIGN LOCK WALL FEM Typical monolith 2D model Lock wall 3D model

  10. FINAL DESIGN LOCK HEAD FEM Lock Walls (Concrete) Lock Head Large Recess (Concrete) Lock Head Small Recess (Concrete) Rolling gates (Steel) Lock Head Slab (Concrete) Backfill (Gatún Rockfill) Rock Foundation (Gatún Rock) Lock Walls (Concrete)

  11. FINAL DESIGN LOCK HEAD FEM Model implementation Interactions Model implementation Loads assignment

  12. FINAL DESIGN LOCK HEAD FEM Model implementation Loads assignment

  13. FINAL DESGIN FEM RESULTS • Seismic behavior evaluation. • Foundation bearing verification. • Wall displacements time-history. • Critical stress time-history. Units: MPa

  14. CONCRETE DESIGN CRITICAL SECTIONS USACE EM 1110-2-2104 ACI 318 All structural components will be designed for the internal forces (axial, bending and shear) obtained from the FEM Analysis by integrating the stresses.

  15. CONCRETE STRENGTH DESIGN Static Load Condition Flexure-Axial design Level I Earthquake Flexure-Axial design Design forces by averaging the seven peak forces

  16. CONCRETE DEMAND CAPACITY RATIOS

  17. REINFORCED CONCRETE DESIGN Chamber Floor Slab

  18. REINFORCED CONCRETE DESIGN Chamber Floor Slab

  19. REINFORCED CONCRETE DESIGN Crossunder slab and walls

  20. REINFORCED CONCRETE DESIGN Chamber Conduit

  21. REINFORCED CONCRETE DESIGN Lock Wall Monoliths – First Lift

  22. REINFORCED CONCRETE DESIGN Lock Wall Monolith toe

  23. THANK YOU!THIS IS THE EFFORT OF HUGE TEAM PIANC Setting the course