Abstract: A floating structure for supporting a marine wind turbine comprising an emerged tower (21) defined by a tower wall (31), a submerged float (23) defined by a float wall (33) and a float lower end closing wall (34) and a transition element (22) placed in-between and defined by a transition wall (32), wherein the tower wall (31), the float wall (33) and the transition wall (32) have axisymmetric outer surfaces about a central axis (5) respectively defined by a tower generatrix, a float generatrix and a curved concave transition generatrix which is tangent to the tower generatrix, and wherein the axisymmetric outer surface of the float wall (33) has a float upper diameter (D2) equal to the axisymmetric outer surface of the transition wall (32) and bigger than the axisymmetric outer surface of the tower wall (31).

Abstract: The floating structure (20) for supporting a marine wind turbine comprises a tower (21), a float (23), and a transition element (22) between the tower (21) and the float (23). The tower (21) has a tower tubular wall (31) having a tower axisymmetric outer surface about a central axis (5) defined by a tower generatrix, the float (23) has a float tubular wall (33) and a float lower end closing wall (34), the float tubular wall (33) has a float axisymmetric outer surface about the central axis (5) defined by a float generatrix, and the transition tubular wall (32) has a transition axisymmetric outer surface about the central axis (5) defined by a curved concave transition generatrix which is tangent to the tower generatrix. The transition axisymmetric outer surface of the transition element (22) has a transition upper diameter equal than a tower lower diameter (D1) and a transition lower diameter equal than a float upper diameter (D2).

Abstract: The invention relates to the embodiment, by means of a pre-stressed concrete layer, on floating structures for supporting wind turbines, of the transition zone between the tower, of a lesser diameter, and the concrete float, of a greater diameter, whether the tower is made of metal or concrete. Said layer of revolution has the optimum geometry for the correct transmission of forces between the two parts, the tower and the float, with a reduced thickness and without the need for external rigidifying and reinforcing elements on the surfaces thereof, which would increase the weight and the cost of the structure.

Abstract: The floating structure for supporting a wind turbine comprises a SPAR-type hollow precast monolithic body made of concrete prestressed by active reinforcement members having a cylindrical lower section (13) closed at its lower end by a hemispheric cap (18) which contains ballast (14) and acts as a flotation element and an upper section (12) located above sea level, which acts as a support for the wind turbine or other element. One or more of the active reinforcement members have opposite ends anchored to a steel ring-shaped plate (17) attached to an upper end of the upper section (12) and an intermediate section which has continuity within the hemispheric cap (18). The structure is preferably moored to the seabed by means of cable lines (15), through heavy weight elements (16) or suction piles capable of counteracting vertical and horizontal force components induced by the mooring lines.

Abstract: The floating structure for supporting a wind turbine comprises a SPAR-type hollow precast monolithic body made of concrete prestressed by active reinforcement members having a cylindrical lower section (13) closed at its lower end by a hemispheric cap (18) which contains ballast (14) and acts as a flotation element and an upper section (12) located above sea level, which acts as a support for the wind turbine or other element. One or more of the active reinforcement members have opposite ends anchored to a steel ring-shaped plate (17) attached to an upper end of the upper section (12) and an intermediate section which has continuity within the hemispheric cap (18). The structure is preferably moored to the seabed by means of cable lines (15), through heavy weight elements (16) or suction piles capable of counteracting vertical and horizontal force components induced by the mooring lines.

Abstract: The precast concrete floating structure for supporting a wind turbine comprises a precast SPAR-type monolithic platform made of concrete prestressed by means of active reinforcement bars. The structure is formed by a cylindrical section (13) finished at its lower end by a hemispheric cap (23) which acts as a flotation element and another cylindrical and/or frustoconical upper section (12), located above sea level, which acts as a support for the wind turbine. The structure is moored to the seabed by means of cable lines 20, through heavy ballasting elements or suction piles (16) capable of counteracting the vertical and horizontal components induced by the cables.