A system for levelling and gripping a jacket leg into a hollow foundation pile has a levelling assembly for adjusting the longitudinal axis of a jacket leg partially inserted in a hollow foundation pile with an actuation group arranged about the jacket leg and configured to exert a force parallel to the longitudinal axis between the upper edge of the hollow foundation pile and the jacket leg and selectively attachable to the jacket leg and recoverable for further use in another levelling assembly; and a gripping assembly for locking the jacket leg in a designated position with respect to the hollow foundation pile once leveled.

The invention concerns a method for installing a tubular metal pile (28) in a rocky ground, successively comprising drilling the rocky ground (6) in order to form a cavity (14) of predetermined diameter and depth, filling the cavity with a granular material (18), arranging the granular material present in the cavity by vibration, and installing the pile in the cavity.

A foundation system for supporting a structure thereon comprising: a plurality of blocks, each block having at least three sides; at least two recesses formed in the at least three sides of each block; a plurality of connecting plates having a first end configured to be secured within a recess of a first block and a second end configured to be secured within a recess of an adjacent block such that the connecting plate extends between recesses of adjacent blocks to secure adjacent blocks together to form a foundation grid of said blocks; and enclosure panels mountable to said blocks along an edge thereof so as to form an enclosure about a perimeter of the foundation grid.

The present disclosure relates to a foundation profile for an offshore structure. The foundation profile includes a profile end portion, which is arranged in an offshore subsoil in the intended state of the foundation profile. Further, at least one elongated hollow body is arranged at the profile end portion in the intended state. The elongated hollow body is configured to receive a swellable material.

Offshore structure that is provided with a supporting system with one, two, three or more suction buckets (1) to be installed in the seabed, which buckets are fastened to the rest of the foundation system and with a star-shaped, seen in top view, connector body (6) of reinforced mineral cement concrete with the same number of external corners as there are suction buckets, which external corners are formed by the radial outwardly extending arms which provide the star shape and with a single vertical central column (5) placed centrally between the suction buckets, seen in top view, formed by a single tube and made of e.g. thin-walled steel, which carries the gondola of the windmill at its top, the gondola with the rotor blades at least 20 meters above the local water level.

A clamper plate for securing a tower having a flange to a pedestal having an embedded first bolt and second bolt is disclosed. The clamper plate includes a first surface coming into contact with the flange and a second surface coming into contact with the pedestal. The clamper plate also includes a first through-hole for receiving the first bolt therethrough and a second through-hole for receiving the second bolt therethrough. During installation the clamper plate is placed over the flange and secured to the pedestal through the first bolt and second bolt.

A method of forming a foundation (26) of a wind turbine (10) including a tower (12) having a base tower section (24), comprising: mounting a levelling apparatus (56) to an anchor cage (30), the anchor cage (30) including a plurality of anchor bolts (36) extending between an upper flange (34) and a lower flange (38), the levelling apparatus (56) being arranged between the upper and the lower flanges (34, 38); arranging the anchor cage (30) in an excavation pit (94); directing a cementitious material into the excavation pit (94) so that the upper flange (34) becomes at least partially embedded within the first cementitious material; allowing the cementitious material to cure to form a rigid body (28, 90); actuating the levelling apparatus (56) to raise the upper flange (34) from the rigid body (28, 90) into a levelled position; directing a grout material (32) into a space beneath the raised upper flange (34); and allowing the grout material (32) to cure to form a support layer. The invention extends to an anchor cage arrangement and a system for forming a wind turbine foundation.

A cage for a monopile of an offshore wind turbine is provided, configured to extend, in an installed state, in a height direction of the monopile, wherein the cage includes one or more supports for holding one or more pipes and/or tubes, and a first inner diameter at a lower portion thereof and a second inner diameter at an upper portion thereof, the second inner diameter) being smaller than the first inner diameter, and wherein the cage is configured to be arranged on the monopile having a conically shaped outer surface tapered in the height direction such that the upper portion of the cage rests at the conically shaped outer surface of the monopile. The cage can be attached by resting it on the conically shaped outer surface of the monopile.

An off-shore wind turbine system is assembled using a platform or jack-up vessel, and a first base anchored to the seafloor at a bade assembly off-shore location. A buoyant tower is attached to the first base. A crane provided on the platform or jack-up vessel is used to lift blades and blades, which are then coupled to a turbine held in a nacelle provided at the top of the buoyant tower. The buoyant tower, the nacelle, and the blades are detached from the first base. The buoyant tower, the nacelle, and the blades are towed to a wind farm and connected to a second base provided in the wind farm. The buoyant tower, the nacelle, and the blades are further stabilized using mooring lines spanning between the buoyant towers and other bases provided in the wind farm. The first base and/or the second base include anti-rotation features.

A wind turbine platform includes a wind turbine base; a plurality of radial moment beams, operatively connected to the wind turbine base, extending radially from the wind turbine base; and a plurality of piles, each pile being operatively connected to a radial moment beam and extending into a medium to provide foundational support for the wind turbine platform.