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Photographer's Note

sea and bridge Rio-Antirio
Due to the peculiar conditions of the straits, several unique engineering problems needed to be considered and overcome. The water depth reaches 65 m, the seabed is mostly of loose sediment, the seismic activity and possibility of tectonic movement is significant, and the Gulf of Corinth is expanding at a rate of about 30 mm a year. In addition, the hills on either side create a wind tunnel where 70 mph winds are common.

For these reasons, special design and construction techniques were applied. Beneath each pier the seabed was first reinforced and stabilized by driving 200 hollow steel pipes vertically into the ground. The pier footings were not buried into the seabed, but rather rest on a bed of gravel meticulously leveled to an even surface (a difficult endeavor at this depth). During an earthquake, the piers can move laterally on the sea floor with the gravel bed absorbing the energy. The bridge decking is connected to the pylons using jacks and dampers to absorb movement; too rigid a connection would cause the bridge structure to fail in the event of an earthquake and too much lateral leeway would damage the piers. There is also provision for the gradual widening of the strait over the lifetime of the bridge. Protection from the effect of high winds on the decking is provided by the use of aerodynamic spoiler-like fairing and on the cables by the use of spiral Scruton strakes.

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Photo Information
  • Copyright: Costantino Topas (COSTANTINO) Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 12119 W: 23 N: 19097] (119066)
  • Genre: 风景
  • Medium: 彩色
  • Date Taken: 2022-07-26
  • Photo Version: Original Version
  • Date Submitted: 2022-08-10 23:43
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Points: 28
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Additional Photos by Costantino Topas (COSTANTINO) Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 12119 W: 23 N: 19097] (119066)
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