[322/03] Francke - Ingenia

INFRASTRUCTURE
approach bridges were produced by
Dragados in Cadiz in Southern Spain
and subsequently towed to Sweden in
pairs, complete with concrete
motorway deck.
The high bridge is carried by a total
of 80 pairs of cables, ten in each
direction from each pylon leg. Each
cable consists of between 68 and 73
strands. A strand consists of seven 5
mm wires. The wires are galvanised,
waxed and encased in plastic casing.
Each cable has a tensile strength of
2,000 tonnes and the combined length
of all cables is about 25 km. The total
weight is about 2,300 tonnes.
Following the inauguration of the
Øresund Fixed Link on 1 July 2000
approximately 500,000 vehicles
crossed the Øresund Bridge during the
first month. Information about traffic
and toll prices etc. can be seen at
www.oeresundsbron.com. The photo
files of the Øresund Bridge are available
at www.bridgephoto.dk. ■
ingenia
28
Figure 7: Side view of bridge to show cable pattern
With a height of 204 metres above
sea level the pylons of the Øresund
Bridge are the tallest concrete
structures in Sweden. The construction
of the pylons began with the placing of
the pylon caissons which had been
cast in a dry dock in Malmö Harbour
and towed to the bridge line. On top of
the caissons the casting of the pylons
was carried out by means of selfclimbing
formwork. The entire casting
process took seven to ten days for
each 4 metre lift.
About 4,335 m 3 of concrete went
into each pylon leg – 220 m 3 per lift in
the first stage and about 34 m 3 per lift
near the top. The concrete was
provided from a batching plant on a
barge moored next to the pylon
cofferdam. Each pylon leg required 800
tonnes of reinforcement which was
prepared in prefabricated cages, and
then lifted into position. The pentagon
shaped pylon legs are solid for the first
17 metres and hollow above that level.
The reinforcement cages for the
cross beams, which connect the pylon
legs approximately 45 metres above
sea level, were built ashore, then lifted
into position for casting. Steel anchor
boxes were also cast into the pylon
legs, to which the cables are attached.
The eight bridge girders for the high
bridge were produced at Karlskrona
shipyard on the East coast of Sweden
and then towed to Malmö, where the
concrete motorway deck was added.
The forty-nine girders for the two
Main contractors on the
Øresund Bridge
Dredging and Reclamation
Öresund Marine Joint Venture:
● Per Aarselff (DK)
● Ballast Nedam Dredging (NL)
● Great Lakes Dredge and Dock
Co. (USA)
The Tunnel
Øresund Tunnel Contractors:
● NCC International (SE)
● Dumez-GTM International (F)
● John Laing (UK)
● E. Pihl & Søn (DK)
● Boskalis Westminster Dredging
(NL)
The Bridge
Sundlink Contractors:
● Skanska (SE)
● Højgaard & Schultz (DK)
● Monberg & Thorsen (DK)
● Hochtief (D)
The Railway
Banverket Industridivisionen (SE)