Spijkenisse Metro Tunnel
HEIGHT: 6.55 m
WIDTH: 10.3 m
TOTAL IMMERSED LENGTH: 530 m
DEPTH AT BOTTOM OF STRUCTURE: -22.46
ENVIRONMENTAL CONDITIONS: River currents.
FABRICATION METHOD: Elements were cast in casting basin used previously for the elements for the Rotterdam Metro. Three elements were cast at a time, in two cycles.
WIDTH: 10.3 m
TOTAL IMMERSED LENGTH: 530 m
DEPTH AT BOTTOM OF STRUCTURE: -22.46
ENVIRONMENTAL CONDITIONS: River currents.
FABRICATION METHOD: Elements were cast in casting basin used previously for the elements for the Rotterdam Metro. Three elements were cast at a time, in two cycles.
Rotterdam,
Netherlands
Municipality of Rotterdam
Van Hattum & Blankevoort, Netherlands
Gemeentewerken Rotterdam (G.W.R.)
90m
530m
22.46m
Project construction
1985-04-30
6
Two tubes; one track each.
6.55m
10.3m
Elements were cast in casting basin used previously for
the elements for the Rotterdam Metro. Three elements
were cast at a time, in two cycles.
the elements for the Rotterdam Metro. Three elements
were cast at a time, in two cycles.
River currents.
Lowered by cranes. Survey tower on outboard end.
Gina/Omega rubber joints between element. Final joint
between last two elements was made using gasketted
steel plates installed by divers. Provision was made in
joint to the land section for settlement.
between last two elements was made using gasketted
steel plates installed by divers. Provision was made in
joint to the land section for settlement.
Jetted-sand method was used. Silt was first removed by air-jetting for agitation by new
method developed by contractor, and the action of the river current. At one end,
unsuitable material was removed by over-excavation and replaced with sand, which was
then vibro-compacted.
method developed by contractor, and the action of the river current. At one end,
unsuitable material was removed by over-excavation and replaced with sand, which was
then vibro-compacted.
Reinforced