A pile holding system is to be mounted on a deck of a vessel, e.g. for installation of a pile adapted to support an offshore wind turbine. The pile holding system is configured to support the pile in an upright position at a pile installation location next to the vessel. A vessel is provided with such a pile holder system. A method for installation of a pile and a pile holder are also disclosed.

A pile holding system is to be mounted on a deck of a vessel, e.g. for installation of a pile adapted to support an offshore wind turbine. The pile holding system is configured to support the pile in an upright position at a pile installation location next to the vessel. A vessel is provided with such a pile holder system. A method for installation of a pile and a pile holder are also disclosed.

A pile-driver assembly for driving a pile into the ground, preferably offshore, and a method of driving a pile into the ground using the pile-driver assembly is disclosed. The assembly includes a casing defining a chamber, the chamber being configured to house a fluid. The assembly further includes a positioning element configured to position the casing at or on the pile, wherein at least a portion of the positioning element is positioned between the chamber and the pile. The assembly further includes actuating means, wherein actuation of the actuating means displaces the chamber relative to the positioning element, such that the chamber moves away from the pile, and wherein the actuating means is configured to release the chamber for displacement towards the pile such that a force is exerted by the chamber on the positioning member, to controllably drive the pile into the ground.

A pile-driver assembly for driving a pile into the ground is disclosed. The assembly includes a casing defining a chamber configured to house a fluid; a positioning element configured to position the casing at or on the pile; and actuating means. Actuation of the actuating means displaces the chamber relative to the positioning element such that the chamber moves away from the pile to an elevated position. The actuating means is configured to release the chamber from the elevated position for displacement towards the pile such that a force is exerted by the chamber on the positioning member, to controllably drive the pile into the ground. The assembly further includes buffering means, the buffering means being configured to controllably buffer the force exerted by the chamber on the pile as the pile is driven into the ground. The buffering means is configured to rebound the chamber to a rebound position. Further actuation of the actuating means displaces the chamber relative to the positioning element, such that the chamber moves from the rebound position to the elevated position. A control system for controlling the pile-driver assembly and a method of driving a pile into ground using the pile-driver assembly are also disclosed.

The present disclosure provides a pile lifting device capable of preventing the overturning of piles that can lift piles by chucking the piles using hydraulic pressure and prevent the overturning of the piles even when chucking is released during lifting, thus preventing accidents. According to an embodiment of the present disclosure, the pile lifting device capable of preventing the overturning of piles, which is connected to lifting equipment and used to lift piles, includes a balance plate which is connected to the lifting equipment to maintain a horizontal balance and a pile lifting chuck which is connected to the balance plate directly or via a plurality of first lifting cable and inserted into an upper inner diameter portion of the pile to hold the pile using a hydraulic force.

The present disclosure provides a pile lifting device capable of preventing the overturning of piles that can lift piles by chucking the piles using hydraulic pressure and prevent the overturning of the piles even when chucking is released during lifting, thus preventing accidents. According to an embodiment of the present disclosure, the pile lifting device capable of preventing the overturning of piles, which is connected to lifting equipment and used to lift piles, includes a balance plate which is connected to the lifting equipment to maintain a horizontal balance and a pile lifting chuck which is connected to the balance plate directly or via a plurality of first lifting cable and inserted into an upper inner diameter portion of the pile to hold the pile using a hydraulic force.

A template for installing piles underwater includes a template frame and pile guides having parallel pile guide centerlines and being fixed to the template frame. Each pile guide has a pile guide frame that surrounds a passageway configured for passing a pile therethrough. Each pile guide frame includes upper and lower ends. Each pile guide includes a spacer fixed to the pile guide frame and protruding into the passageway. The spacer has a pile contact surface for guiding a pile. The pile contact surface encloses an imaginary cylinder including a centerline which coincides with the pile guide centerline. In a circumferential direction about the pile guide centerline, the location of the pile contact surface shifts with respect to the corresponding pile guide frame in a direction from the lower end to the upper end thereof as seen in a direction from the template center to the pile guide centerline.

A template for installing piles underwater includes a template frame and pile guides having parallel pile guide centerlines and being fixed to the template frame. Each pile guide has a pile guide frame that surrounds a passageway configured for passing a pile therethrough. Each pile guide frame includes upper and lower ends. Each pile guide includes a spacer fixed to the pile guide frame and protruding into the passageway. The spacer has a pile contact surface for guiding a pile. The pile contact surface encloses an imaginary cylinder including a centerline which coincides with the pile guide centerline. In a circumferential direction about the pile guide centerline, the location of the pile contact surface shifts with respect to the corresponding pile guide frame in a direction from the lower end to the upper end thereof as seen in a direction from the template center to the pile guide centerline.

A rotary drive machine for the installation of helical pile sections through installation openings in a slab floor inside of a building perimeter. A vertical frame having an upper end and an open lower end is positioned over an installation opening through which it is desired to rotationally install a helical pile section, and the vertical frame anchored to the slab floor. A rotary power means, attached to the helical pile section moves along a vertical movement guide and is driven by a vertical actuator to rotationally and vertically drive the helical section into the ground. A method of use is also disclosed.

A rotary drive machine for the installation of helical pile sections through installation openings in a slab floor inside of a building perimeter. A vertical frame having an upper end and an open lower end is positioned over an installation opening through which it is desired to rotationally install a helical pile section, and the vertical frame anchored to the slab floor. A rotary power means, attached to the helical pile section moves along a vertical movement guide and is driven by a vertical actuator to rotationally and vertically drive the helical section into the ground. A method of use is also disclosed.