Patent ID: 9605401
Date: 2017-03-28
CPC Classifications: E02B,E02D

Claim:
1. A gravity-based foundation system for offshore wind turbine installation that comprises: three floating concrete bases built with self-floating concrete caissons, equipped with valves for filling them with water and emptying the water out enabling their ballasting and anchoring at their final location, a metal structure which connects the three floating concrete bases by means of a connecting element to a wind turbine tower of a wind turbine, and wherein the connecting element which connects the three floating concrete bases to the wind turbine tower is a metal element on which a docking area, a maintenance platform and access stairs are installed; wherein each of the three floating concrete bases comprises a lower slab which is in contact with the terrain once the system has been submerged, an upper slab, a perimeter wall and interior walls or partitions that define a first group of interconnected cells.