The invention relates to a structure (2) for supporting a wind turbine tower (1) provided with a housing (7) for fitting therein the foot of the tower (1), a main axis (Γ) being defined on the platform (2) which coincides with a main axis of the tower (1), and which comprises a body with a constant cross-section and internal walls (8) and intermediate walls (10) joined by internal radial ribs (11) perpendicular to the internal wall (8) whose plane passes through the main axis (Γ), such that at the intermediate wall (10) first joining nodes (12) are defined between the intermediate wall (10) and radial ribs (11), the intermediate wall (10) and an external wall (9) being joined by reticular ribs (14 and 15). This structure provides an optimal transmission of forces. The invention likewise relates to methods for manufacturing, assembling and installing the structure.

A ring-wing floating platform is disclosed. The ring-wing floating platform includes a floating hull, a top of the floating hull being above a sea surface and its geometry at a water plane is centrally symmetric, a ring-wing surrounding a perimeter of a bottom of the floating hull with a horizontal projection of concentric annular geometries, a positioning system located at the bottom of the floating hull, and a topsides located above the floating hull and connected to the floating hull by deck legs or installed directly on the top of the floating hull. The axes of the ring-wing and the floating hull are collinear, and their bottoms are in a same horizontal plane. The ring-wing and the floating hull are connected together as a unitary structure by multiple connecting components with an annular gap in-between.

A ring-wing floating platform is disclosed. The ring-wing floating platform includes a floating hull, a top of the floating hull being above a sea surface and its geometry at a water plane is centrally symmetric, a ring-wing surrounding a perimeter of a bottom of the floating hull with a horizontal projection of concentric annular geometries, a positioning system located at the bottom of the floating hull, and a topsides located above the floating hull and connected to the floating hull by deck legs or installed directly on the top of the floating hull. The axes of the ring-wing and the floating hull are collinear, and their bottoms are in a same horizontal plane. The ring-wing and the floating hull are connected together as a unitary structure by multiple connecting components with an annular gap in-between.

A caisson for maritime works, consisting of a base (1) and at least one lateral wall (2) attached to the same and formed by a plurality of voussoirs (3). Within the same a main space (4) is defined, intended to receive granular material as ballast. The voussoirs (3) feature an upper side (5), a lower side (6) and lateral sides (7) and are arranged with the lateral sides (7) of adjacent voussoirs (3) attached to each other, forming horizontal segments (8). Said horizontal segments (8) are attached to other identical horizontal segments (8) to define the lateral wall (2) by means of the union of the lower sides (6) and upper sides (5) of the voussoirs (3) forming the same. The base (1) has a geometric shape which coincides with the geometric shape of the horizontal segments (8). A procedure for the assembly of said caisson for maritime works is also described.

A caisson for maritime works, consisting of a base (1) and at least one lateral wall (2) attached to the same and formed by a plurality of voussoirs (3). Within the same a main space (4) is defined, intended to receive granular material as ballast. The voussoirs (3) feature an upper side (5), a lower side (6) and lateral sides (7) and are arranged with the lateral sides (7) of adjacent voussoirs (3) attached to each other, forming horizontal segments (8). Said horizontal segments (8) are attached to other identical horizontal segments (8) to define the lateral wall (2) by means of the union of the lower sides (6) and upper sides (5) of the voussoirs (3) forming the same. The base (1) has a geometric shape which coincides with the geometric shape of the horizontal segments (8). A procedure for the assembly of said caisson for maritime works is also described.

A method for the offshore installation of a construction laid by gravity on the seabed, comprising: the provision of a concrete base (1) delimited by a lower slab (8), a roof (2) and a perimeter wall (5), the interior whereof comprises vertical walls (6, 6′) forming cells (7, 12, 22); connecting at the periphery of the roof (2) a plurality of hollow metal floats (3) formed by a column with a circular or polygonal base; towing the assembly to the offshore location where the construction is to operate; allowing seawater to enter the cells (12) located below the roof (2), maintaining the cells (22) located below the metal floats (3) empty, in such a way that when the cells (12) located below the roof (2) are totally full, both the base and the metal floats (3) are submerged; once the cells located below the roof (2), but not those located below the metal floats (3) are full of water, allowing water to enter the cells (22) located below the metal floats (3) in such a way that the immersion of the assembly is completed, the base thereof resting on the seabed; and removing the metal floats. A gravity-based structure comprising a concrete base (1) and a plurality of hollow metal floats (3) connectable thereto.

A method for the offshore installation of a construction laid by gravity on the seabed, comprising: the provision of a concrete base (1) delimited by a lower slab (8), a roof (2) and a perimeter wall (5), the interior whereof comprises vertical walls (6, 6′) forming cells (7, 12, 22); connecting at the periphery of the roof (2) a plurality of hollow metal floats (3) formed by a column with a circular or polygonal base; towing the assembly to the offshore location where the construction is to operate; allowing seawater to enter the cells (12) located below the roof (2), maintaining the cells (22) located below the metal floats (3) empty, in such a way that when the cells (12) located below the roof (2) are totally full, both the base and the metal floats (3) are submerged; once the cells located below the roof (2), but not those located below the metal floats (3) are full of water, allowing water to enter the cells (22) located below the metal floats (3) in such a way that the immersion of the assembly is completed, the base thereof resting on the seabed; and removing the metal floats. A gravity-based structure comprising a concrete base (1) and a plurality of hollow metal floats (3) connectable thereto.

This publication relates to a shallow water terminal, preferably for storing and loading or unloading hydrocarbons, such as LNG, oil or gas. The base structure comprises a floatable, and removable seabed substructure (10) intended to be supported by a seabed (30), the seabed substructure (10) comprising a base structure (11) provided preferably with an upwards extending wall structure (22), arranged along at least a part of the periphery of the base structure (11), the base structure (10) preferably also being provided with an opening (23) in the wall structure (22) for allowing the floatable module to be berthed in and supported by the seabed substructure (10). The base structure (10) is provided with strong points (24) configured to receive the ends of preinstalled vertical piles (14) for at least temporary support of the base structure (11) during a piling operation for permanent piling of the base structure (10) to the sea bed (30). The publication also relates to a method for piling a base structure on or above a seabed (30).

This publication relates to a shallow water terminal, preferably for storing and loading or unloading hydrocarbons, such as LNG, oil or gas. The base structure comprises a floatable, and removable seabed substructure (10) intended to be supported by a seabed (30), the seabed substructure (10) comprising a base structure (11) provided preferably with an upwards extending wall structure (22), arranged along at least a part of the periphery of the base structure (11), the base structure (10) preferably also being provided with an opening (23) in the wall structure (22) for allowing the floatable module to be berthed in and supported by the seabed substructure (10). The base structure (10) is provided with strong points (24) configured to receive the ends of preinstalled vertical piles (14) for at least temporary support of the base structure (11) during a piling operation for permanent piling of the base structure (10) to the sea bed (30). The publication also relates to a method for piling a base structure on or above a seabed (30).

This publication relates to a shallow water terminal, preferably for storing and loading or unloading hydrocarbons, such as LNG, oil or gas. The base structure comprises a floatable, and removable seabed substructure (10) intended to be supported by a seabed (30), the seabed substructure (10) comprising a base structure (11) provided preferably with an upwards extending wall structure (22), arranged along at least a part of the periphery of the base structure (11), the base structure (10) preferably also being provided with an opening (23) in the wall structure (22) for allowing the floatable module to be berthed in and supported by the seabed substructure (10). The base structure (10) is provided with strong points (24) configured to receive the ends of preinstalled vertical piles (14) for at least temporary support of the base structure (11) during a piling operation for permanent piling of the base structure (10) to the sea bed (30). The publication also relates to a method for piling a base structure on or above a seabed (30).