A device is for securing a connection to be formed between a leg of a marine structure and a pile of a fundament fastened in a seabed. The connection has the leg partly inserted into an opening of the pile. The device is configured to be firmly connected to the leg. The device comprises a sleeve element configured, together with the leg of the marine structure, to be brought to vicinity of an upper portion of the pile. The device further has a clamping arrangement attached to the sleeve element comprising at least one clamping device configured to form an attachment between the sleeve element and the upper portion of the pile.

A modular foundation support system includes modular foundation support components including self-aligning and torque transmitting coupler features wherein a plurality of\elongated ribs are aligned with a plurality of elongated grooves to rotationally interlock the modular foundation support components to one another.

A modular foundation support system includes modular foundation support components including self-aligning and torque transmitting coupler features wherein a plurality of\elongated ribs are aligned with a plurality of elongated grooves to rotationally interlock the modular foundation support components to one another.

A method of installing a foundation (1) for a structure. The foundation body (2) has a toe (7) at its distal end which defines an aperture into an internal cavity (12) defined by an inner wall (8). Fluid is jetted from a plurality of nozzles (9) to direct fluid distally into the soil (5) ahead of the toe (7) during installation. A pump arrangement (13) controlled by a controller (16) is used to vary the quantity of fluid at a proximal end to thereby vary the fluid suspension pressure adjacent the toe (7) in a fluid communication channel (11) extending between the proximal end and the toe (7). The controller varies the fluid suspension pressure as the toe (7) inserts deeper into the soil (5) based on a target fluid suspension pressure as a function of toe depth.

A method of installing a foundation (1) for a structure. The foundation body (2) has a toe (7) at its distal end which defines an aperture into an internal cavity (12) defined by an inner wall (8). Fluid is jetted from a plurality of nozzles (9) to direct fluid distally into the soil (5) ahead of the toe (7) during installation. A pump arrangement (13) controlled by a controller (16) is used to vary the quantity of fluid at a proximal end to thereby vary the fluid suspension pressure adjacent the toe (7) in a fluid communication channel (11) extending between the proximal end and the toe (7). The controller varies the fluid suspension pressure as the toe (7) inserts deeper into the soil (5) based on a target fluid suspension pressure as a function of toe depth.

Process for installing an offshore tower, comprising: a) manufacturing a foundation comprising a block, manufacturing at least one superposition section of a shaft, and manufacturing a base section of a shaft; b) applying said base section to said foundation block (starting unit) to assume the relative position for the installed condition, applying said superposition sections to said starting unit in a multi-layered configuration, and applying lifting means to at least one of said foundation block and said base section; c) moving said starting unit up to the installation point; d) introducing ballast in said foundation block so that said starting unit sinks until resting on the bottom of the body of water; e) actuating said lifting means to expand said sections into the installed condition; f) between step a) and c), placing said foundation block or starting unit in the body of water of the installation point.

Provided are a pile foundation bearing platform settlement, reinforcement, lift-up and leveling structure and a construction method thereof. The structure includes a bearing platform and a plurality of pile foundations, a weak soil reinforcement layer under the bearing platform and a pile tip bearing stratum. The weak soil reinforcement layer forms a plurality of first grouting holes, and the first grouting hole extends through the bearing platform and communicates with the outside. The first grouting hole is used to perform primary grouting in the weak soil reinforcement layer. The pile tip bearing stratum forms a plurality of second grouting holes, and the second grouting hole extends through the weak soil reinforcement layer and the bearing platform, and communicates with the outside. The second grouting hole is used to perform secondary grouting in the pile tip bearing stratum.

Provided are a pile foundation bearing platform settlement, reinforcement, lift-up and leveling structure and a construction method thereof. The structure includes a bearing platform and a plurality of pile foundations, a weak soil reinforcement layer under the bearing platform and a pile tip bearing stratum. The weak soil reinforcement layer forms a plurality of first grouting holes, and the first grouting hole extends through the bearing platform and communicates with the outside. The first grouting hole is used to perform primary grouting in the weak soil reinforcement layer. The pile tip bearing stratum forms a plurality of second grouting holes, and the second grouting hole extends through the weak soil reinforcement layer and the bearing platform, and communicates with the outside. The second grouting hole is used to perform secondary grouting in the pile tip bearing stratum.

A vibrator assembly comprising a feed pipe that has a longitudinal axis as well as a first end and a second end. The vibrator assembly may further comprise a vibrator unit that is mechanically coupled to the feed pipe, and a filling assembly which extends into the feed pipe at the first end and is designed to pick up material and direct same into the feed pipe. The feed pipe may have at least two separate channels from the first end to the second end and parallel to the longitudinal axis.

A vibrator assembly comprising a feed pipe that has a longitudinal axis as well as a first end and a second end. The vibrator assembly may further comprise a vibrator unit that is mechanically coupled to the feed pipe, and a filling assembly which extends into the feed pipe at the first end and is designed to pick up material and direct same into the feed pipe. The feed pipe may have at least two separate channels from the first end to the second end and parallel to the longitudinal axis.