GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW) | ||||||
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23:28 Feb 26, 2006 |
English to Italian translations [PRO] Tech/Engineering - Ships, Sailing, Maritime / offshore technology | |||||||
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| Selected response from: Gian Italy Local time: 15:46 | ||||||
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Summary of answers provided | ||||
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4 | Fondazione a gravità (GBS) |
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gbs Fondazione a gravità (GBS) Explanation: Come già suggerito; questo è la defizione inglese alternativa e che meglio identifica il significato http://www.offshorewindenergy.org/ca-owee/indexpages/Offshor... 3.2.1 Operational experience Gravity foundations or gravity base structures (GBS) have been used extensively in the Norwegian sector of the North Sea, mainly in deep water, for example Troll and Sleipner. The UK sector has also used gravity foundations in deep water, but more recently in shallower water: Ravenspurn and Harding. GBS are generally buoyant for floatout, tow and installation and are then ballasted with water, iron ore or grout to provide sufficient on-bottom weight to resist overturning. The GBS normally consists of a series of open and or closed cells that form the base and one to four legs that are integral to the design, provide stability during temporary conditions and support the topsides. http://www.comune.venezia.it/str/commissioni/v_10_3.asp Di Tella illustra il confronto tra la paratoia a gravità ed Il MOSE, mostrando (sempre con slides) la differenza tra i volumi dell’acqua di zavorra e l’aria compressa (nelle due strutture a confronto). Dice che il MOSE ha: comportamento instabile, grandi volumi d’aria, inversione carichi cerniere, centro spinta basso, grande energia e controllo in tempo reale zavorra, tunnel subacqueo, grandi palificazioni e dragaggi, grandi costruzioni in opera, impatto ambientale enorme. Dice che la Paratoia a gravità ha: comportamento stabile, piccoli volumi d’aria, non inversione carichi cerniere, posizione pesi/spinte ottimale, bassa energia e comandi “on-off”, assenza di sistema di controllo, assenza tunnel subacqueo, fondazioni a gravità e dragaggi minimi, costruzione in cantieri navali, impatto ambientale minimo. |
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