| 摘要 |
<p>The invention relates to a gravity based structure 1 for supporting offshore installations and comprises a foundation 4. The foundation 4 has a basal portion 1l. The basal portion 11 has a plurality of openings 10 for drainage of water. There is at least one first layer 7 of filter material, with a gradation suitable fat draining water entrapped beneath the basal portion 11 to the openings 10. The layer 7 is installed on the seabed 8 beneath the foundation 4. The foundation has adownwardly extending skirt 5 that is adapted to penetrate into the seabed beneath the filter material layer (7).</p> |
