EP2886722A1 - Vorrichtung und Verfahren zur Platzierung eines Erdpfahls - Google Patents

Vorrichtung und Verfahren zur Platzierung eines Erdpfahls Download PDF

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Publication number
EP2886722A1
EP2886722A1 EP14189929.4A EP14189929A EP2886722A1 EP 2886722 A1 EP2886722 A1 EP 2886722A1 EP 14189929 A EP14189929 A EP 14189929A EP 2886722 A1 EP2886722 A1 EP 2886722A1
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EP
European Patent Office
Prior art keywords
movement
support structure
gripping members
gripping
foregoing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14189929.4A
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English (en)
French (fr)
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EP2886722B1 (de
Inventor
Dieter Rabaut
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Geosea NV
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Geosea NV
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Publication date
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Priority to PL14189929T priority Critical patent/PL2886722T3/pl
Publication of EP2886722A1 publication Critical patent/EP2886722A1/de
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Publication of EP2886722B1 publication Critical patent/EP2886722B1/de
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Anticipated expiration legal-status Critical

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
    • E02D13/04—Guide devices; Guide frames
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0039—Methods for placing the offshore structure
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0056—Platforms with supporting legs
    • E02B2017/0065—Monopile structures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0091—Offshore structures for wind turbines

Definitions

  • the invention relates to a device and method for placing a sizeable, slender object with a longitudinal direction on a ground surface.
  • the invention relates particularly to a device and method for placing a monopile of a wind turbine on an underwater bottom.
  • the invention will be elucidated with reference to an offshore wind turbine.
  • the reference to such a wind turbine does not however imply that the invention is limited thereto, and the device and method can be applied equally well for placing on any ground surface any other sizeable slender object, such as for instance other offshore foundation structures, jetties, radar and other towers or onshore applications.
  • a frequently applied foundation of a wind turbine comprises a monopile provided on an upper side with a transition piece which forms the connection to a turbine mast arranged on the monopile.
  • the monopile is carried under water and driven with an underside into an underwater bottom. A large part of the monopile foundation is thus located under water in use.
  • Monopiles typically comprise hollow cylindrical structures of steel or concrete which can have a length of more than 50 m, a diameter of 6 m and more, and a weight which can rise to 800 tons and more.
  • Foundations for wind turbines are moreover becoming increasingly heavier because wind turbines are constantly being scaled up. Because the monopile foundations are becoming increasingly more sizeable, they are increasingly more difficult to handle.
  • a known method for placing a monopile on an underwater bottom comprises of taking up the monopile from a vessel using a lifting means such as a crane and lowering the monopile onto or into the underwater bottom, the monopile being kept under control here in a roughly vertically oriented position by auxiliary cables operated with winches. Only when the monopile has been fixed in the underwater bottom, for instance by being driven into the underwater bottom, is the monopile uncoupled from the lifting means.
  • a drawback of the known method and device is that it can only be performed in a relatively calm sea.
  • Such a sizeable object is indeed subject to a great deal of energy from the sea (currents, waves) and from the wind as it is lowered into the water.
  • An object of the present invention is therefore to provide a device and method for placing a sizeable, slender object with a longitudinal direction on a ground surface, which at least partially obviates the above stated drawback of the prior art.
  • the invention particularly seeks to provide an improved device and method for placing a monopile of a wind turbine on an underwater bottom.
  • a device which comprises a lifting means with which the object can be taken up and a gripping construction separate from the lifting means, which gripping construction is connected to a support structure, comprises gripping members movable relative to this support structure and configured to engage a peripheral part of the object suspended from the lifting means, and comprises movement-damping means configured to damp movements of the gripping members relative to the support structure.
  • the device acts as a damping system which absorbs at least some of the energy of an object suspended from the lifting means without swinging movements of the objects otherwise being wholly prevented.
  • the movement-damping connection ensures that, while a transverse movement of the object can take place, this is increasingly countered as the movement becomes greater. Swinging movements of the object transversely of the longitudinal direction thereof are thus damped.
  • Support structure is understood to mean a stable support structure which is able to absorb the forces produced by a moving object received in the gripping construction.
  • Another aspect of the invention relates to a method for placing a sizeable, slender object with a longitudinal direction on a ground surface, wherein the method comprises the steps of
  • a peripheral part of the object is gripped with a suitable clamping force by the gripping construction, wherein the object can move in transverse direction in the manner of a pendulum.
  • the movement-damping means avoid these movements reaching such high amplitudes that the device and/or the object are damaged.
  • a better controlled process is moreover obtained by removing peak amplitudes. It thus becomes possible to work in a heavier swell of up to 2-2.5 m of significant wave height and more, where a prior art method can only be applied up to a significant wave height of 1.5 m.
  • the object is taken up at a lifting point by the lifting means, wherein the gripping construction is configured to clamp round a cross-section, lying at a distance from the lifting point, of the object suspended from the lifting means.
  • the distance from the clamping to the lifting point can be selected within wide limits.
  • the angular position of the object is adjusted by actively moving the gripping members by means of the movement-damping means.
  • An object arranged on the ground surface can hereby be brought into the correct, generally vertical position before this object is fixed in the ground surface.
  • the angular position is determined by the angle which the longitudinal direction of the object makes with the vertical direction.
  • the movement-damping means are not only used to damp swinging movements of an object received in the gripping construction but also actively employed to precisely set the angular position of a placed object.
  • An embodiment of the device according to the invention is characterized in that the movement-damping means are configured to convert the kinetic energy of the gripping members (and an object received therein) moving relative to the support structure to thermal energy.
  • the temperature increase resulting from the generated heat can for instance be kept under control by cooling of conduits and the like in the ambient air.
  • the device comprises cooling means for the movement-damping means or components thereof.
  • the movement-damping connection between the gripping members and the support structure can be configured in many ways.
  • the movement-damping means comprise a mechanical spring means arranged between the gripping members and the stable support structure.
  • a suitable mechanical spring means comprises for instance a prestressed wire, preferably steel wire, which is connected to a winch, if desired by means of a hydraulic cylinder.
  • Another embodiment of the invention provides a device wherein the movement-damping means comprise a hydraulic piston cylinder and throttle means for hydraulic liquid present in the piston cylinder. Flowing hydraulic liquid is subjected by the throttle means to a hydraulic resistance, whereby the friction increases and the temperature rises. Generated kinetic energy is hereby dissipated in effective manner.
  • This embodiment can if desired be applied in combination with a hydraulic accumulator which can optionally generate desired prestressing forces and/or can compensate possible volume differences in hydraulic cylinder chambers.
  • the prestressing of the movement-damping connection can be controlled in simple manner by applying an accumulator. Suitable accumulators comprise membrane accumulators and/or piston accumulators. In the case of a transverse movement of the monopile and the gripping members the counteracting stress in such a movement-damping connection will increase to a value which depends on the gas volume in the accumulator, whereby the movement is countered.
  • a further embodiment of the invention relates to a device wherein the piston cylinder comprises a hydraulic synchronous cylinder arranged between the gripping members and the support structure.
  • a synchronous cylinder (also referred to as synchronization cylinder) is provided with a piston rod on both sides of the piston disc.
  • Running between the cylinder volumes present on either side of the piston rod is an external hydraulic conduit which connects the cylinder volumes. The volume of the hydraulic oil flowing in and out therefore always remains the same.
  • a synchronous cylinder acts in two directions without an accumulator being necessary.
  • the throttle means can be embodied as openings in the piston of the piston cylinder and/or as constrictions in the hydraulic conduits. Suitable throttle means for instance comprise optionally controllable throttle valves.
  • the movement-damping means of the device act transversely of the longitudinal direction of the object. This means that swinging movements transversely of the longitudinal direction of an object received in the gripping members are counteracted with a force component acting transversely of the longitudinal direction of the object.
  • the device is characterized according to an embodiment of the invention in that the gripping construction comprises a lattice frame connected to the support structure. Also connected to the lattice frame in this embodiment are the gripping members, wherein the connection between the lattice frame and the gripping members takes place via the movement-damping means.
  • the gripping construction and particularly the lattice, to be rotatably connected to the support structure.
  • the gripping construction can thus be brought into a folded-down, non-operational position, which saves space.
  • a fold-down gripping construction creates more space for installing auxiliary constructions, such as for instance a transition piece between the wind turbine and a placed monopile, and navigating away from the device is moreover simplified.
  • auxiliary constructions such as for instance a transition piece between the wind turbine and a placed monopile, and navigating away from the device is moreover simplified.
  • the gripping construction can be brought into an operational position, for instance by being folded out.
  • a suitable embodiment comprises a device wherein the gripping members comprise a set of arms, wherein the arms extend in an operational position transversely of the longitudinal direction of the object and are movable relative to each other between a free position at a distance from the peripheral part in which the peripheral part is released, and a clamping position in which the peripheral part is clampingly received.
  • the movement-damping means are configured to damp the movement of the arms jointly relative to the support structure. During damping of the movement the arms therefore remain an equal distance from each other, whereby the object remains clamped between the arms.
  • the movement of the arms is preferably damped in a direction perpendicularly of a longitudinal direction of the arms. Movement-damping means suitable for this purpose therefore preferably perform their damping action in this direction.
  • a device wherein it, and preferably the arms, is provided with second gripping members which are movable in the longitudinal direction of the arms.
  • Second movement-damping means are configured in this embodiment to damp the movement of the second gripping members jointly relative to the support structure, wherein the second gripping members are therefore held an equal distance from each other and the object remains clamped between the second gripping members.
  • the movement of the second gripping members is preferably damped in a direction running parallel to the longitudinal direction of the arms. Second movement-damping means suitable for this purpose therefore preferably perform their damping action in this direction.
  • the movement-damping means such that they can damp the movement of the gripping members in two mutually differing (transverse) directions. This can be realized in efficient manner by providing first and second gripping members which can perform their damping action in two directions, and corresponding first and second movement-damping means which perform their damping action on respectively the first and second gripping member in said directions.
  • a further embodiment according to the invention relates to a device wherein the support structure has a peripheral edge, the gripping members extend beyond the peripheral edge, whereby an object suspended from the lifting means can hang downward along the support structure, and first movement-damping means act parallel to the peripheral edge.
  • Another embodiment of the invention provides a device wherein second movement-damping means act perpendicularly of the peripheral edge.
  • the swinging movements of the object in a transverse direction running substantially perpendicularly of said peripheral edge are countered in this embodiment by second movement-damping means acting in this direction.
  • the device and method according to the invention can be applied for the purpose of placing any sizeable, slender object on or in a ground surface
  • the object is preferably the monopile of a wind turbine, and the ground surface an underwater bottom.
  • the support structure preferably comprises a vessel, in particular a jack-up platform.
  • the device can not only be applied for placing a sizeable, slender object with a longitudinal direction on a ground surface under more difficult conditions, but it can also be applied according to a preferred method for orienting the object correctly relative to a vertical direction.
  • a preferred method for orienting the object correctly relative to a vertical direction Provided for this purpose is a method wherein, prior to the step of fixing the object relative to the ground surface, the orientation or angular position of the object is adjusted by actively moving the gripping members by means of the movement-damping means. The position of the object is generally determined with the lifting means.
  • Fixing relative to the ground surface of a sizeable, slender object placed on or in a ground surface with the device and method according to the invention can take place in any manner. It is thus possible to drive the monopile into the ground surface by making use of a per se known hydraulic hammer, by drilling or by another suitable technique. In a preferred method the object is supported by the gripping construction while the object is being driven into the ground.
  • a device 1 for placing a monopile 3 on an underwater bottom 2.
  • the device is likewise suitable for placing other objects with a longitudinal direction, such as for instance transition pieces 4 of a wind turbine mast, onto each other or onto another ground surface.
  • a ground surface can thus comprise any structure on which a sizeable, slender object can be placed.
  • device 1 comprises a support structure in the form of a jack-up platform 5.
  • Jack-up platform 5 comprises a vessel which can navigate autonomously and which can be positioned and fixed at a desired position by lowering a number of spud poles 50 onto underwater bottom 2.
  • Spud poles 50 are for this purpose moved by means of a rack and pinion drive down against the underwater bottom and further so that platform 5 is raised out of the water as shown in figures 1 , 2 and 3 , wherein work deck 51 of platform 5 lies metres above water surface 20.
  • Spud poles 50 are provided with so-called spudcans 52 to prevent spud poles 50 penetrating into underwater bottom 2.
  • Work deck 51 of platform 5 is further provided with a lifting means in the form of a crane 6 with double boom (60a, 60b) for the purpose of absorbing considerable forces.
  • Crane 6 is pivotable around a substantially vertical axis 62 on a base 61.
  • Crane 6 is provided with a set of hoisting cables (63a, 63b) which can be taken in or payed out over a top part 65 of crane 6 using winches (not shown) and which is provided at the free outer end with a hoisting block 66 with hook, from which a monopile 3 is suspended in use.
  • Monopile 3 is provided for this purpose with a hoisting construction, removable if desired, at a lifting point 33.
  • the angular position of booms (60a, 60b) can if desired be adjusted by a set of traction cables (64a, 64b) which connect top part 65 to base 61. Traction cables (64a, 64b) can likewise be taken in or payed out using winches (not shown).
  • Work deck 51 of platform 5 further comprises a gripping construction 10 separate from crane 6. Parts of gripping construction 10 are received in a housing 100, as shown in figures 1 , 2 and 3 . Gripping construction 10 is configured to engage a peripheral part 32 of a monopile 3 suspended from crane 6, as will be further elucidated below. Gripping construction 10 is further connected by means of a movement-damping connection to (work deck 51 of) jack-up platform 5. Jack-up platform 5 functions here as a stable support structure for gripping construction 10, among other reasons because of the great weight thereof and because spud poles 50 support on underwater bottom 2.
  • gripping construction 10 is shown in detail in figure 4 .
  • Housing 100 is omitted here so as to make the components visible.
  • the connection between gripping construction 10 and work deck 51 of jack-up platform 5 is formed in the shown embodiment by a lattice frame 7 of ribs 70 coupled rigidly to each other.
  • Lattice frame 7 is connected for rotation around a horizontal axis 71 to work deck 51 by means of hinge connections 72.
  • lattice frame 7 can be rotated relative to work deck 51 between a rest position, in which lattice frame 7 and gripping construction 10 coupled thereto are folded upward (this rest position is shown in broken lines in figure 4 ), and a position of use in which a part of lattice frame 7 rests on work deck 51 and another part overhangs along a vertical side edge 52 of work deck 51.
  • the downward hanging underside of lattice frame 7 comes to lie here roughly at the position of a lower edge 53 of side edge 52, which lower edge can lie 10 m or more lower than work deck 51.
  • Gripping construction 10 extends in the position of use beyond side edge 52, whereby a monopile suspended from lifting means 6 can hang downward along jack-up platform 5.
  • brackets 73 which are connected to work deck 51 and can be opened when lattice frame 7 has to be moved to the rest position.
  • the downward hanging underside of lattice frame 7 comprises a main beam 74 provided with winches 75.
  • Winches 75 are configured to change the orientation (the heading) of a pile about its longitudinal axis.
  • a cable (not shown) is for this purpose trained round the pile and the heading of the pile about its longitudinal axis can be changed by tightening the cable using a winch 75.
  • gripping construction 10 comprises first gripping members in the form of a set of arms (12a, 12b) which extend in the downward folded position of use in a horizontal plane 31 which runs transversely of the longitudinal direction 30 of a monopile 3 received in gripping construction 10 (see for instance figures 3 and 5 ).
  • the two arms (12a, 12b) are moved toward each other parallel to transverse direction 15 by movement-damping means, further elucidated below, in order to clamp round a peripheral part 32 of a monopile 3 suspended from hoisting block 66 of crane 6.
  • the arms (12a, 12b) are for this purpose movable relative to each other between a free position a distance from the peripheral part (32), in which the peripheral part is released, and a clamping position in which the peripheral part (32) is clampingly received.
  • the movement of arms (12a, 12b) takes place by means of first movement-damping means in the form of hydraulic double-action cylinders (11a, 11b).
  • Arms (12a, 12b) are further provided with second gripping members (23a, 23b) which are movable together with arms (12a, 12b) via cylinders (11a, 11b) between a clamping position as shown in figure 6 , in which a peripheral part 32 of monopile 3 is clampingly received between gripping members (23a, 23b) with a clamping force which can rise to 50 tons and more, and a free position (not shown) in which gripping members (23a, 23b) are at a distance from peripheral part 32, whereby peripheral part 32 is released and monopile 3 can move freely relative to gripping members (23a, 23b) and the whole gripping construction 10.
  • Arms (12a, 12b) can be moved individually (for clamping) as well as jointly using the hydraulic double-action cylinders (11a, 11b).
  • the joint movement can be 'active', for instance in order to adjust the angular position of an already placed object, or 'passive', wherein a displacement of arms (12a, 12b) in the direction 15 as a result of a swinging movement of an object received in arms (12a, 12b) is damped.
  • the movement-damping means here also comprise throttle means for hydraulic liquid present in the piston cylinders.
  • Cylinders (11a, 11b) are connected with their casing (13a, 13b) to main beam 74, while a piston rod (14a, 14b) of the two cylinders (11a, 11b) engages on a corresponding arm (12a, 12b).
  • the set of arms (12a, 12b) is movable relative to work deck 51 in the direction 15 running transversely of the longitudinal direction 30 of a monopile 3 received in arms (12a, 12b), and substantially parallel to side edge 52 of work deck 51 of the jack-up platform.
  • Such a movement of arms (12a, 12b) is damped by the action of cylinders (11a, 11b) extending with a longitudinal direction (and piston rods (14a, 14b)) parallel to side edge 52.
  • FIG. 7A A suitable embodiment of the movement-damping means (11a, 11b) for arms (12a, 12b) is shown in figure 7A .
  • the two cylinders (11a, 11b) are connected to a hydraulic circuit as shown, which comprises a pump 110 and a throttle valve 113, and further a number of valves (111, 112).
  • valves 111 When valves 111 are closed the cylinders act as movement dampers.
  • the two pistons 114 are displaced and oil is pumped round via throttle valve 113.
  • Kinetic energy is converted to thermal energy here by heating of the oil.
  • the hydraulic circuit can further be provided with cooling means (not shown).
  • valves 111 When valves 111 are open and valves 112 are closed, oil can be pumped 'actively' to the cylinders with pumps 110, whereby pistons 114, and so also arms (12a, 12b), are 'actively' displaced. This can take place both jointly and separately, depending on how valves 111 are controlled.
  • the stroke volume 115a on the rod side differs from the stroke volume 115b on the disc side.
  • the stroke volumes 115a of the rod side of the hydraulic double-action cylinders (11a, 11b) are mutually connected, as are the stroke volumes 115b of the disc side, whereby the volumes remain relatively equal.
  • the second gripping members (23a, 23b) can be moved jointly in direction 16 using the hydraulic synchronous cylinders (24a, 24b).
  • the joint movement can be 'active', for instance in order to adjust the angular position of an already placed object, or 'passive', wherein a displacement of gripping members (23a, 23b) in direction 16 as a result of a swinging movement of an object received in gripping members (23a, 23b) is damped.
  • FIG. 7B A suitable embodiment of the movement-damping means (11a, 11b) for gripping members (23a, 23b) is shown in figure 7B .
  • Synchronous cylinder 24a (and 24b) is connected to a hydraulic circuit as indicated which comprises a pump 240, two valves (241, 242) and a throttle valve 243.
  • valves (241, 242) When valves (241, 242) are closed, the synchronous cylinder acts as movement damper.
  • a piston 244 is displaced and oil is pumped around via throttle valve 243.
  • Kinetic energy is converted to thermal energy here by heating of the oil, wherein too great a temperature increase is prevented by providing the hydraulic circuit with cooling means (not shown).
  • valves (241, 242) are open, oil can be 'actively' pumped to the cylinder with pump 240, whereby piston 244, and so also gripping members (23a, 23b), are 'actively' displaced.
  • peripheral equipment such as for instance hydraulic and electric power sources, feed conduits therefor and the like. This peripheral equipment is not described in further detail.
  • a sizeable, slender object, in particular a monopile 3, of a wind turbine can be placed on a ground surface, in particular an underwater bottom 2, this in worse weather conditions than is possible with the known method.
  • a suitable embodiment of the method comprises of taking up monopile 3 by a lifting point 33 (see figures 1 and 2 ) using a lifting means suitable for the purpose, such as crane 6. Monopile 3 is then lowered to a height at which a peripheral part 32 of monopile 3 lying at a distance from lifting point 33 is engaged by the above described gripping members (12a, 12b, 23a, 23b). Gripping members (12a, 12b, 23a, 23b) are connected here via lattice frame 7 to the jack-up platform by means of movement-damping connections acting in two directions 15 and 16.
  • the movement-damping means acting in direction 15 comprise a hydraulic circuit incorporating cylinders (11a, 11b) as well as throttle valves 113, valves (111, 112) and pumps 110.
  • the movement-damping means acting in direction 16 comprise a hydraulic circuit incorporating synchronous cylinders (24a, 24b) as well as throttle valves 243, valves (241, 242) and pumps 240.
  • monopile 3 is here anchored to some extent in the underwater bottom, the angular position of monopile 3 can thus be adjusted relative to the vertical direction.
  • monopile 3 is fixed relative to underwater bottom 2, for instance by driving monopile 3 further into the underwater bottom using a hydraulic hammer, preferably under the guidance of gripping construction 10.
  • monopile 3 is uncoupled from gripping construction 10 by retracting the arms (12a, 12b) provided with gripping members (23a, 23b) from peripheral part 32 and rotating gripping construction 10 around hinges 72 into the rest position.
EP14189929.4A 2013-11-04 2014-10-22 Vorrichtung und Verfahren zur Platzierung eines Erdpfahls Active EP2886722B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14189929T PL2886722T3 (pl) 2013-11-04 2014-10-22 Urządzenie i sposób do umieszczania pala

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE2013/0748A BE1022134B1 (nl) 2013-11-04 2013-11-04 Inrichting en werkwijze voor het op een ondergrond plaatsen van een fors slank object met een lengterichting

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EP2886722A1 true EP2886722A1 (de) 2015-06-24
EP2886722B1 EP2886722B1 (de) 2016-12-07

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BE (1) BE1022134B1 (de)
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WO2018117846A1 (en) * 2016-12-23 2018-06-28 Itrec B.V. A method for installation of a pile adapted to support an offshore wind turbine, wave-induced motion compensated pile holding system, vessel, and pile holder
WO2019125172A2 (en) 2017-12-22 2019-06-27 Itrec B.V. Pile holding system, vessel and pile installation method
WO2019103611A3 (en) * 2017-11-27 2019-07-18 Itrec B.V. A method for installation of a pylon section of an off shore wind turbine and a vessel for performing such a method
WO2019149674A1 (en) 2018-01-30 2019-08-08 GeoSea N.V. Device and method for providing a sizeable, slender object with a longitudinal direction into an underwater bottom
WO2019172752A2 (en) 2018-03-06 2019-09-12 Itrec B.V. Adjustable pile holding system, vessel and pile installation method
WO2019231329A1 (en) * 2018-06-01 2019-12-05 Itrec B.V. Offshore vessel, preferably an offshore wind turbine installation vessel, a crane for providing such a vessel, and a method for using such a crane, preferably for upending a monopile
US10569977B1 (en) 2019-04-01 2020-02-25 Maersk Supply Service A/S Method of securing and transferring a load between a vessel and an offshore installation and an apparatus therefor
WO2020128016A1 (en) 2018-12-20 2020-06-25 Deme Offshore Be N.V. Vessel and device for upending an elongate element from a deck of the vessel using a lifting means
NL2022205B1 (en) 2018-12-13 2020-07-03 Itrec Bv Adjustable Pile Holder System
WO2020153838A1 (en) * 2019-01-21 2020-07-30 Itrec B.V. Pile driving methods and systems for driving a pile
NL2023210B1 (en) * 2019-03-28 2020-10-06 Itrec Bv Pile driving method and system for driving a pile.
WO2020200380A1 (en) 2019-04-01 2020-10-08 Maersk Supply Service A/S A method of securing and transferring a load between a vessel and an offshore installation and an apparatus therefor
NL2022947B1 (en) 2019-04-15 2020-10-22 Itrec Bv A vessel and method for installation of a pile adapted to support an offshore wind turbine
WO2021125943A1 (en) * 2019-12-20 2021-06-24 Ihc Holland Ie B.V. A system and a method for controlling a motion compensated pile guide for a floating vessel, and a vessel
EP3889029A1 (de) * 2020-04-03 2021-10-06 DEME Offshore BE N.V. Vorrichtung zum anheben und platzieren eines länglichen gegenstandes auf eine bodenfläche und entsprechendes verfahren
IT202000017887A1 (it) * 2020-07-23 2022-01-23 Saipem Spa Metodo e gruppo galleggiante per installare pali di fondazione in un letto di un corpo d'acqua
US20220063963A1 (en) * 2019-01-17 2022-03-03 Saipem S.P.A. Multi-functional clamp, system and method for the installation of a wind turbine on an offshore substructure
WO2023242427A3 (en) * 2022-06-17 2024-02-15 Itrec B.V. Crane and method for the assembly and installation of offshore wind turbines

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Cited By (54)

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Publication number Priority date Publication date Assignee Title
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DK2886722T3 (en) 2017-03-20
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EP2886722B1 (de) 2016-12-07

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