Norway engineers pioneer world's first underwater floating tunnel
Batter William
July 26, 2016
0
The proposed floating tunnel would be a world's first. Photo / Youtube
Norwegian engineers have proposed a truly innovative solution to a travel difficulty faced by the picturesque country.
As
a part of huge infrastructure project in Norway, engineers have
proposed to build a world first floating underwater tunnel in a fjord - a
long, narrow, deep inlet of the sea between high cliffs.
A major
highway that connects the city of Kristiansand in the south to
Trondheim in the north cuts through a number of fjords. The highway
takes drivers on a 1100km journey but given the unique landscape of the
nordic country it involves seven ferry trips to complete the drive.
The project would cut the fjord crossing time from 21 hours to 11 hours. Photo / Youtube But the incredible proposal would cut the commute from 21
hours down to just 11 hours and also mean certain residents wouldn't
necessarily need to rely on taking a helicopter to hospital.
Norway's public roads administration is currently preparing a
feasibility study for one of the largest fjords on the route -
Bjørnafjord. The structure will consist of two curved, 1200m-long
concrete tubes hanging 20 to 30m below the surface. The tubes would be
connected to floating pontoons on the surface.
The tunnel tubes would be connected to floating pontoons on the surface. Photo / Youtube The structure is officially called a submerged floating
tube-bridge but is also known as a Archimedes Bridge. The Archimedes
principle is named after the Ancient Greek mathematician who came up
with the buoyancy calculation, supposedly while sitting in the bathtub.
The
principle denotes that the upward buoyant force that is exerted on a
body immersed in a fluid, whether fully or partially submerged, is equal
to the weight of the fluid that the body displaced.
Senior
engineer for the country's public roads administration, Arianna
Minoretti, told Wired that working on the project has been hugely
exciting.
"For an engineer working on this structure, it's like being on the Discovery Channel every day," she said.
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