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Civil engineering structures
Hassan II Bridge
Major road infrastructure
Mission G1Mission G2Mission G3Mission G4
Localisation
Marrakech, Morocco
Année
2022
Durée
18 months
Client
Ministry of Equipment and Water
Contexte du projet
The Hassan II bridge is a strategic structure connecting two rapidly expanding districts of Marrakech. The site features heterogeneous alluvial soils with a variable water table and significant seismic constraints (zone 3).
Défis géotechniques
- Compressible alluvial soils over 15m deep
- Water table at ground level during flood periods
- Strict seismic requirements (0.18g acceleration)
- Operational constraints and tight deadlines
Solutions mises en œuvre
- 1Foundations on Ø1200mm drilled piles anchored in marly bedrock at -22m
- 23D numerical modeling (Plaxis) to optimize soil-structure interaction
- 3Monitoring system with inclinometers, piezometers and load cells
- 4Enhanced geotechnical monitoring throughout construction phase (G4 mission)
Livrables & documentation
- G1 Report: Geological synthesis and preliminary recommendations
- G2 PRO Report: Pile design and Eurocode 7 calculations
- G3 Report: Execution plans and technical implementation specifications
- G4 Report: Monthly monitoring with instrumentation measurements and compliance validation
Chiffres clés du projet
m
Total span
Crossing the Tensift river
Drilled piles
Ø1200mm, average depth 22m
Mission months
From preliminary study to acceptance