Abstract:
This invention is detailing a construction method for a cast in-situ pile having an upper section with a larger diameter and at least one subsequent section with a smaller diameter, and a drilling device equipped with continuous flights which allows the construction of one pile having multiple diameters using the innovative construction method in a single continuous drilling phase while each drilling tool is penetrating through the soil in one pass. The drilling tool according to the invention has a central hollow space that allows accommodation through it of at least one another smaller diameter drilling tool that can drill continuously and can be coupled by means of a coupling-decoupling device in a specific manner to the other drilling tool in order to act as a fixed assembly, at any given position in relation to the smaller drilling tool length and rotating position.
Abstract:
A tool for an offshore wind power foundation pile includes a steel pipe pile, a pile core, a pile cap, and a pile shoe. A cutting shoe portion is arranged at a bottom of the steel pipe pile, and an outer diameter of the pile shoe is larger than an outer diameter of the cutting shoe portion; the pile cap is detachably connected to the top of the steel pipe pile; the pile core is located in the steel pipe pile, the pile core is detachably connected to the pile shoe, and a length of the pile core is larger than or equal to a length of the steel pipe pile; the pile cap is further provided with a pile core accommodating groove and a pile core limiting portion; the pile core limiting portion includes a pile core limiting block and a limiting hole.
Abstract:
The subject invention pertains to systems and methods for controlling an end-effector moving in three-dimensional space within long piles or shafts. Systems can include a fixed base platform, a cable-driven working platform, a cable-driven end-effector, a sensing system including draw wire sensors, gyroscopes, sonar sensors, and lidar, a control system in communication with the sensing system, and actuators for cables. The end-effector can be configurable to become a cable-driven parallel end-effector, a serially linked arm, a flexible end-effector or an air-lifting end-tool in cases of cleaning founding layers in bored pile shafts. The control system can be configurable to regulate the lengths of cables through actuators and modulate the positions and orientations of the working platform and the end-effector.
Abstract:
The present invention relates to a system for temporarily holding, during driving operations, a foundation pile (E) intended to receive the mast of an off-shore wind turbine. The temporary holding system (1) comprises a sleeve (2) intended to surround a section of said foundation pile (E) and a carrier frame (3) containing an interface module (31). The interface module (31) and a primary section (2a) of said sleeve (2) are assembled using bearing means (5) intended to provide said sleeve (2) with a rotational degree of freedom with respect to said interface module (31), about an axis of rotation (R) extending coaxially to said longitudinal axis (21′). And said temporary holding system (1) comprises rotating means (9), suitable to rotate said sleeve (2) about said axis of rotation (R).
Abstract:
A hydraulic pole tamper with an extended ergonomic handle including a frame and hose clamps to extend the life of the hose by securing the hoses to the frame and to improve the handle, orientation, and usability of the pole tamper. The pole tamper is used to tamp or compact the dirt around a pole which has been set into a hole in the ground to fixedly secure the pole vertically in the ground.
Abstract:
A method of installing foundation elements, in particular (mono)piles having a diameter of five meters or more, in an underwater ground formation includes lowering a leader from a surface vessel with at least the tip of the leader into the water, and lowering a foundation element and/or a noise mitigation screen along the leader.
Abstract:
Hammering device meant for hammering poles, steel profiles and other elongated objects into the ground which hammering device comprises a body (1) which can be attached to a power tool, a vibrator device (6) which is attached to the body (1) with the help of damping cushions (9) and movable gripping jaws (10) which are adjusted to the mentioned vibrator device (6) in order to grip the object to be hammered at least with a side grip wherein the gripping elements (23) of the gripping jaws (10) can be brought closer and farther away with the help of a regulating unit, such as a hydraulic cylinder (16). In order to maintain the mutual symmetry of the gripping jaws (10) during their movement the gripping jaws (10) essentially comprise arms (2), (3) which are attached to be stiff at the location of the turning joints (8) of the gripping jaws which arms are directed in such a way that the ends of the arms (2), (3) are located next to each other and stay essentially next to each other during the turning movements meant for the gripping jaws (10), and in that the ends of the mentioned arms (2); (3) are connected to each other with the help of a short arm (4) which has a pivot mounting.
Abstract:
The present invention generally relates to a helical pile system for use in supporting a support structure used in the oil and gas industry. The helical pile assembly includes a tubular member having a first end and a second end. The helical pile assembly further includes a nose disposed at the first end of the tubular member. The helical pile assembly also includes a first helix disposed on an outer surface of the nose. The helical pile assembly further includes a support member coupled to the tubular member proximate to the second end of the tubular member. The support member is configured to support an external object.
Abstract:
A helical pile assembly includes a plate and a rod extending from the plate. The rod includes threads. A piling is configured to be disposed in the ground and support a load. A connection device is positioned around the rod and configured to transmit torque to the piling. The connection device includes threads that are configured to engage the threads of the rod.
Abstract:
A multi-suction pile anchor and a plate anchor for mooring a marine structure, comprises a plurality of suction piles connected in parallel with the same capacity penetrates into the sea floor, wherein a pullout resistance required for mooring the marine structure is applied by changing the number of suction piles, and wherein a plurality of suction piles is connected each other with a connecting plate to increase a lateral resistance.