Zeeburger Tunnel
HEIGHT: 7.82 m
WIDTH: 29.80 m
TOTAL IMMERSED LENGTH: 336 m
DEPTH AT BOTTOM OF STRUCTURE: 14.60 m
ENVIRONMENTAL CONDITIONS: Bad soil conditions to - 28 m - then clay to - 38.0 m.
FABRICATION METHOD: Each of the three elements was constructed in sequence in the open construction dock at one end of the tunnel, which was equipped with a specially designed gate. Each element was cast in five 22.4 m long sections, using a cooling system to prevent cracking.
WIDTH: 29.80 m
TOTAL IMMERSED LENGTH: 336 m
DEPTH AT BOTTOM OF STRUCTURE: 14.60 m
ENVIRONMENTAL CONDITIONS: Bad soil conditions to - 28 m - then clay to - 38.0 m.
FABRICATION METHOD: Each of the three elements was constructed in sequence in the open construction dock at one end of the tunnel, which was equipped with a specially designed gate. Each element was cast in five 22.4 m long sections, using a cooling system to prevent cracking.
Amsterdam,
Netherlands
Ministry of Public Works; Rigkswaterstaat
Van Hattum en Blankevoort b.v. Beverwijk
Locks and Weirs Division of Rigkswaterstaat
112m
336m
14.60m
Project construction
1989-04-30
3
Two tubes; three lanes each
7.82m
29.80m
Used telescoping pile to support element. Constructed inside cofferdam for cut-andcover
tunnel. End of last element protrudes into dock, and has a collar around it to
permit dewatering and construction in the dry.
tunnel. End of last element protrudes into dock, and has a collar around it to
permit dewatering and construction in the dry.
Each of the three elements was constructed in sequence
in the open construction dock at one end of the tunnel,
which was equipped with a specially designed gate. Each
element was cast in five 22.4 m long sections, using a
cooling system to prevent cracking.
in the open construction dock at one end of the tunnel,
which was equipped with a specially designed gate. Each
element was cast in five 22.4 m long sections, using a
cooling system to prevent cracking.
Bad soil conditions to - 28 m - then clay to - 38.0 m.
A conventional system was used. The element was temporarily supported at the
outboard end on two piles while the permanent pile connections were made.
outboard end on two piles while the permanent pile connections were made.
Gina and Omega gaskets.
To prevent cracking, the elements were constructed of 22.4 m long sections, posttensioned
together. No exterior waterproofing system was used.
together. No exterior waterproofing system was used.
Supported on piles driven to a depth of 46 m. Eight piles were used along the outer
walls of the tunnel for each 22 m section. The piles are equipped with telescoping
inflatable forms, which can be post-grouted to complete the closure between the top of
the pile and the underside of the tunnel. 120 steel tubular injection piles 0.5 m in
diameter were used to support the elements.
walls of the tunnel for each 22 m section. The piles are equipped with telescoping
inflatable forms, which can be post-grouted to complete the closure between the top of
the pile and the underside of the tunnel. 120 steel tubular injection piles 0.5 m in
diameter were used to support the elements.
Gravel was placed on top of the tunnel. The trench was
filled to -10 m, with the rest to be filled by natural siltation.
filled to -10 m, with the rest to be filled by natural siltation.
B25