TEC Tunnel Engineering consultants

Project description

The Piet Hein tunnel is part of the road link between Amsterdam Central Station and the A10-ring road and the new suburb IJburg on reclaimed land. The tunnel has a total length of 1.9 km and provides a road and rail connection between the eastern waterfront of Amsterdam and the Amsterdam Ring road.

Scope of work

For the Belgium Construction Consortium CPHT (comprising CFE, Besix, Dredging International, van Laere & de Meyer) TEC, through its partner Royal HaskoningDHV, prepared the winning tender design. After the contract was awarded to the Belgium JV, TEC partner Royal HaskoningDHV developed the detailed design for:

• All tunnel structures
• Two service buildings
• Detailed analyses of all transport and immersion stages; this included a risk-based analysis of the off-shore transport of the tunnel elements and the buoyancy analyses for the tunnel elements of which some are double curved. Ballast exchange calculations (replacing temporary water ballast with ballast concrete)
• Building pits for the approach and transition structures
• Immersion trench
• Temporary works including the transportation and immersion equipment.

Also, the towing design, model tests, joint design, temporary pre-stressing design as well as the failure risk analysis for the transport were provided.