EP2309063A1 - Vorrichtung, System und Verfahren zur Erweiterung von Pfählen auf dem Meeresgrund - Google Patents

Vorrichtung, System und Verfahren zur Erweiterung von Pfählen auf dem Meeresgrund Download PDF

Info

Publication number
EP2309063A1
EP2309063A1 EP10180777A EP10180777A EP2309063A1 EP 2309063 A1 EP2309063 A1 EP 2309063A1 EP 10180777 A EP10180777 A EP 10180777A EP 10180777 A EP10180777 A EP 10180777A EP 2309063 A1 EP2309063 A1 EP 2309063A1
Authority
EP
European Patent Office
Prior art keywords
guiding
seabed
pile
guiding apparatus
elements
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.)
Withdrawn
Application number
EP10180777A
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English (en)
French (fr)
Inventor
Torstein Alm
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.)
Kvaerner Jacket Technology AS
Original Assignee
Aker Jacket Technology AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Aker Jacket Technology AS filed Critical Aker Jacket Technology AS
Priority to EP11153383A priority Critical patent/EP2325398A1/de
Publication of EP2309063A1 publication Critical patent/EP2309063A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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

Definitions

  • the invention concerns installation of piles. More specifically, the invention concerns an apparatus and a system for installation of piles, a method of installing the apparatus and a method of installing piles into the ground.
  • the invention is of particular use for subsea applications and for installing piles into the seabed in connection with the erection offshore wind-energy power plants.
  • the state of the art includes various structures, such as slender circular columns, for supporting wind powered plants for generating electricity. When installed at sea, such plants are commonly supported by a lower truss structure, also referred to as a "jacket”, fixed to the seabed via piles or similar devices known in the art.
  • a lower truss structure also referred to as a "jacket”
  • piles or similar devices known in the art.
  • FIG 1 An example of a wind-powered plant for generating electricity is illustrated schematically in figure 1 , where a truss structure 4, commonly referred to as a "jacket", is installed on a seabed B below a body of water W via foundation piles 12, in a manner well known in the art.
  • the jacket 4 is in figure 1 shown as having main supports - or legs - 5a and diagonal struts 5b, and extends a distance above the water surface S.
  • the jacket 4 supports a circular column or tower 2, for example via a load transferring element 10, and the tower carries a wind turbine 6 having at least one turbine blade 6a.
  • the action of the wind both directly and via the rotation of the turbine, generates considerable torsion in the tower, as well as bending moments in the transition between the tower and the jacket. It is therefore of great importance that the jacket is properly and sufficiently supported on the seabed, and consequently that the piles 12 are set with the required precision and verticality.
  • piles used for this purpose may have a length of 45m, a diameter of 1.5m and a weight in air of approximately 60 tonnes.
  • the piles are extended 40m into the seabed.
  • Jackets for use in wind farms are often placed in comparatively shallow waters (e.g. 15 - 25m), and subsea operations give poor or non-existent visibility in the water. This makes the use of ROVs and divers difficult.
  • a guiding apparatus for piles to be extended into a seabed comprising a plurality of pile guiding elements interconnected by connection elements, each guiding element having respective guiding means and respective support elements for supporting the apparatus on the seabed, characterised in that the guiding means is supported by the support element via articulation means, each articulation means having a first end connected to the guiding means and a second end connected to the support element and being individually adjustable, whereby the articulation means of each guiding element are operable to ensure that the guiding apparatus may brought into a level state on an inclined or uneven seabed.
  • the guiding means may comprise a tubular element having a first central axis and the support element may comprise a frusto-conical tubular element having a second central axis, and a portion of the guiding means is adjustably extendible inside the frusto-conical tubular element by said adjustment of the articulation means.
  • the articulation means are individually and selectively adjustable, whereby the guiding means and the frusto-conical tubular element are movable with respect to one another, both in an axial direction where the first and second central axes coincide and in an articulated manner where the first and second central axes do not coincide.
  • the extent of articulation is substantially determined by the conical angle of the frusto-conical tubular element.
  • the articulation means are arranged with even spacing around the guiding element perimeter.
  • the articulation means comprise a hydraulic cylinder having a rod selectively adjustable between a retracted position and an extended position.
  • the articulation means of each guiding element are functionally interconnected, whereby each support element will adapt itself to the inclination of the seabed on which they are resting.
  • the invention comprises a rectangular pile installation frame having four pile guiding elements rigidly interconnected by connection elements.
  • a system for installation of piles to be extended into a seabed comprising a guiding apparatus having a plurality of pile guiding elements interconnected by connection elements, each guiding element having respective guiding means and respective support elements for supporting the apparatus on the seabed, said system also comprising control- and power means for connection to the guiding apparatus, characterised in that the guiding apparatus further comprises position-sensing means and inclination-sensing means operably connected via control means to the guiding elements, whereby the guiding apparatuses' horizontal and vertical positions may be adjusted and the guiding apparatus may brought into a level state on the seabed.
  • the guiding apparatus further comprises hydro-acoustic sensing means connected to a control unit, for sensing the movement and position of a pile being extended into the guiding element.
  • the guiding apparatus further comprises visual sensing means connected to a control unit, for sensing the movement and position of a pile being extended into the guiding element.
  • Each guiding apparatus preferably comprises guiding means having a longitudinal opening for monitoring the position of the pile inside the guiding apparatus.
  • the guiding apparatus preferably comprises a distance sensor for sensing the distance between a piling tool and an upper region of the guiding apparatus.
  • the pile vertical position is measured using hydro-acoustic sensing means. In one embodiment, the pile vertical position is measured using visual sensing means. In one embodiment, the distance between a piling tool and an upper region of the guiding apparatus is measured simultaneously with step c). With the invention, a large number of piles may be pre-installed in a precise and efficient manner.
  • a pile installation frame 20 comprises in this embodiment four guiding elements 24, spaced apart with equal distance to form a square structure, and interconnected by truss structures 22 and diagonal bracing 19.
  • This installation frame thus serves as an installation template, ensuring that the four piles for a given jacket are installed with the required spacing.
  • the installation frame may have a footprint of approximately 18x18m 2 and a vertical extension of about 7m.
  • a typical weight (in air) is 150 tonnes.
  • FIG 3 is an enlargement of a portion of figure 2 , showing one of the guiding elements 24.
  • Each guiding element 24 comprises a pile receptacle 25 connected to a guide funnel 27, and an adjustable support element 32.
  • the support element 32 is connected to the guide funnel 27 via a plurality of actuators 23, in the described embodiment hydraulic cylinders 23. This arrangement is shown in more detail in figure 4 , illustrating the lower portion of the guiding element 24.
  • the actuators 23 connect the support element 32 to the guide funnel 27.
  • the actuators 23 thus provide an adjustable, articulated connection between the guide funnel and the support element.
  • the support element 32 comprises a foot plate, or mud mat, 26 for placement on the seabed, and a frusto-conical (i.e. truncated cone) element 28.
  • FIG. 5a it can be seen (e.g. figure 5a ) how the guide funnel 27 extends a distance into the frusto-conical element 28, having a cone angle ⁇ C and being adjustably supported by the actuators 23.
  • the actuators which in this embodiment are hydraulic cylinders, have a first end 21 connected to the guide funnel 27 and a second end 30 connected to the support element 32, preferably the mud mat 26.
  • Figure 5b and 5c illustrate various relative vertical positions between the support element 32 and the guide funnel 27, all actuators 23 having the same the degree of actuation and the guide funnel central axis C 27 coinciding with the support element central axis C 32 .
  • the actuator 23 on the left-hand side is extended more than the actuator 23 on the left-hand side, whereby the support element and the guide funnel are pivoted (or deflected) with respect to one another, i.e. such that the central axes C 27 and C 32 are not coinciding.
  • the cone angle ⁇ C determines the maximum deflection between the central axes, i.e., in principle, ⁇ M ⁇ 2 ⁇ C .
  • the maximum deflection may be somewhat greater, due to necessary tolerances between the frusto-conical element and the guide funnel. It is apparent from the figures, however, that the maximum deflection is limited by the abutment of the guide funnel against the inner wall of the frustro-conical element.
  • the actuators serve as an articulated joint between the support element and the guide funnel
  • the support element 32 and the guide funnel 27 may be adjusted such that the support element is resting against the somewhat inclined seabed, while the guide funnel 27 extends substantially vertically.
  • the actuators on all of the guiding elements 24 in this fashion the pile installation frame 20 may be adjusted to a substantially level state on the seabed, its guide funnels 27 thereby having a vertical orientation.
  • the guiding elements may accommodate a seabed inclination of 10° and the actuators may have maximum stroke of 1.5m.
  • the actuators 23 may be hydraulic cylinders, interconnected via a subsea control unit 49 (see figure 7 ).
  • the individual actuators 23 are selectively fluidly interconnected via fluid lines 52 and a remote control unit 49 (see figure 7 ).
  • An operator may thus - based on measurements of the applicable seabed conditions, etc. - set a certain pressure in the fluid lines, common for all actuators on a given guiding element 24, whereby the respective support element 32 will be permitted to bear against the seabed surface S (having an inclination ⁇ with respect to the horizontal; see e.g. figure 5d ), while ensuring that the guide funnel 27 is substantially vertical.
  • This operation may be repeated for each guiding element, until the pile installation frame 20 has assumed a substantially level orientation.
  • each support element will automatically adapt itself to the inclination ⁇ of the seabed on which it is resting.
  • the pressures in the hydraulic lines for each guiding element 24 may be equalized in order to ensuring that all four guiding elements bear against the seabed with the substantially same force.
  • Figure 6 is a top view of the installation frame 20, showing some of the applicable instrumentation.
  • Positioning data for the pile installation frame e.g. in relation to an installation vessel, are provided by transponders 36, attached to the truss structure 22.
  • the transponders may also be provided with inclinometers.
  • a gyro 46, placed on an instrumentation platform 34, provides for high-accuracy measurement of heading and tilt data. Examples of applicable gyros are laser ring gyro and fibre-optic gyro.
  • cameras 42 and lights 42a, pan-and-tilt cameras 42', a sonar 38, and echo sounders 40 are also fitted to the guide frame.
  • the sonar may be a digital multi-frequency scanning sonar, having a 360° operations range.
  • a convenient camera configuration may be two cameras in each corner of the frame, for example having pan-and-tilt capabilities for 360° monitoring.
  • the lights may preferably be of the LED type.
  • the instrumentation platform also comprises a valve assembly, termed a Remote Control Unit (RCU) 49, the connection of which is schematically illustrated in figure 7 .
  • the RCU 49 is connected via individual lines 52 to respective hydraulic actuators 23.
  • the actuators (hydraulic cylinders) 23 around each guiding element 24 are operated through two independent systems, and the system is fully operational with one faulty system for each guiding element.
  • the RCU 49 is supplied from an umbilical 50 from a Hydraulic Power Unit (HPU) 54 on the topsides vessel 57 (see figure 8a ), platform, or similar, and is operated by electrical signals routed through a Subsea Electronic Module (SEM) 48 on the installation frame.
  • HPU Hydraulic Power Unit
  • SEM Subsea Electronic Module
  • the aforementioned gyro 46, sonar 38, echo sounder 40 and cameras and light 42, 42', are also connected to the SEM 48.
  • the topsides HPU 54 is included as an integral part of the overall control system, included in a operation container located at the installation vessel, also comprising known elements such as e.g. an umbilical reel 56.
  • the umbilical 50 may be a conventional bundle of hydraulic hoses 55a, power cables and signal cables 47.
  • Figure 15 shows an alternative embodiment of the monitoring and control system, where hydraulic lines 55a (dotted lines) connects the topsides oil reservoir 55 and HPU 54a with the subsea installation frame.
  • Power and signal lines 47 (solid lines) are via a connection plate 47a connected to matrices 70, which in turn are connected to the actuators via valve pack 69 and lines 52, as described above.
  • Figure 15 also identifies accelerometer 71, pan-and-tilt camera 42', as well as cameras 42, 42a,d, and gyro 46, sonar 38 and distance measuring units 62.
  • FIG. 11 An alternative embodiment of the instrumentation platform 34 is illustrated in figures 11 - 14 .
  • One instrumentation platform is positioned substantially in the centre of the installation frame, and one instrumentation platform is placed on or in the vicinity of each guiding element 24 (see figure 11 ), i.e. for monitoring the setting of each respective pile.
  • Each instrumentation platform 24 is in this embodiment provided with - in addition to the aforementioned instruments - multiplexer 68, a distance-measuring unit 62 (described below) and cameras 42 and lights 42a, as well as a vertical measurement camera 42b underneath the platform 34.
  • FIGs 8a and 8b are schematic representations of the installation of a pile 12 into the seabed, using the apparatus and system described above.
  • the pile 12 is lowered by a crane 58 on a surface vessel 57, while the approaching pile and its distance from the guiding element 24 is being monitored bye means of the sonar 38 or the echo sounder 40.
  • a platform e.g. a jack-up platform or similar topsides structure, may be used instead of the floating vessel 57. It is also possible to monitor the introduction of the pile into the guiding funnel 27 by visual means, such as the cameras 42, 42' (not shown in figure 8a ).
  • the operator can monitor the length of pile remaining (see figure 8b ) and thus determine the penetration depth.
  • the central sonar will observe the hammer 64 as this approaches the height for target penetration. This will give indication to when observations from other systems should be started.
  • Figures 9 and 10 illustrate further means for controlling the pile installation, more specifically the vertical position of the top of the pile.
  • a distance sensor 62 is mounted on the guide funnel 27, and through an opening 63 in the pile receptacle 25 being able to measure the distance to a defined point on the hammer 64 or follower, e.g. up to the flange 65 on the hammer (see also figures 12 and 14 ).

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Foundations (AREA)
EP10180777A 2009-10-01 2010-09-28 Vorrichtung, System und Verfahren zur Erweiterung von Pfählen auf dem Meeresgrund Withdrawn EP2309063A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11153383A EP2325398A1 (de) 2009-10-01 2010-09-28 System und Verfahren zur Erstellung von Gründungspfählen auf einer Gewässersohle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO20093082A NO20093082A1 (no) 2009-10-01 2009-10-01 Anordning, system og fremgangsmate for foring av peler i en havbunn

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP11153383.2 Division-Into 2011-02-04

Publications (1)

Publication Number Publication Date
EP2309063A1 true EP2309063A1 (de) 2011-04-13

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EP11153383A Withdrawn EP2325398A1 (de) 2009-10-01 2010-09-28 System und Verfahren zur Erstellung von Gründungspfählen auf einer Gewässersohle
EP10180777A Withdrawn EP2309063A1 (de) 2009-10-01 2010-09-28 Vorrichtung, System und Verfahren zur Erweiterung von Pfählen auf dem Meeresgrund

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2492401A1 (de) * 2011-02-22 2012-08-29 GeoSea NV Vorrichtung zur Herstellung eines Fundaments für eine hoch liegende Masse, zugehöriges Verfahren und Aufstellung von der Vorrichtung und einer jack-up Plattform
WO2011147481A3 (en) * 2010-05-28 2012-10-18 Siemens Aktiengesellschaft Offshore foundation structure, offshore foundation and method of establishing the same
NL2007166C2 (en) * 2011-07-22 2013-01-24 Ballast Nedam Offshore B V Re-usable guiding frame.
DE102011112026A1 (de) 2011-08-31 2013-02-28 Strabag Offshore Wind Gmbh Verfahren zum Installieren einer Stahl-Jacket-Gründung auf einem Meeresboden mittels einer Ramm-, Bohr- oder Schraubschablone und Schraub- oder Rammschablone für die Installation von Stahl-Jacket-Gründungen
WO2013043055A1 (en) 2011-09-23 2013-03-28 Installer As Norwind Template
US8926226B2 (en) 2011-02-22 2015-01-06 GeoSea N.V. Device for manufacturing a foundation for a mass located at height, associated method and assembly of the device and a jack-up platform
CN104563155A (zh) * 2013-10-18 2015-04-29 中国海洋石油总公司 扩展基础的导管架
WO2016005617A1 (es) * 2014-07-10 2016-01-14 Drace Infraestructuras, S.A. Método y sistema de fondeo autónomo para cimentaciones de estructuras offshore
WO2016144185A1 (en) * 2015-03-09 2016-09-15 Owec Tower As Apparatus and methods for installing a substructure
CN107119686A (zh) * 2017-04-19 2017-09-01 合肥学院 一种海上潮间带风电基础沉桩限位架及其施工方法
WO2019057827A1 (en) 2017-09-22 2019-03-28 Jan De Nul N.V. REUSABLE SEA INSTALLATION TEMPLATE AND USE THEREOF
CN110832143A (zh) * 2017-06-14 2020-02-21 Ihc荷兰Ie有限公司 一种模板及使用该模板的方法
CN112411603A (zh) * 2020-11-21 2021-02-26 南通泰胜蓝岛海洋工程有限公司 一种海上风电升压站的安装施工工艺
US20210246623A1 (en) * 2018-06-18 2021-08-12 Vallourec Deutschland Gmbh Device for verifying the bearing capacity of a pile of an offshore foundation construction
NL2025754A (en) * 2020-04-08 2021-10-27 Heerema Marine Contractors Nl Devices and methods for installing piles into the ground or seabed
CN115233679A (zh) * 2022-07-19 2022-10-25 张家港江苏科技大学产业技术研究院 一种结构强度高的水下导向架
CN116289936A (zh) * 2023-02-22 2023-06-23 交通运输部广州打捞局 海上插桩施工装置及施工工艺

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2010375C2 (en) 2013-02-28 2014-09-01 Ihc Sea Steel Ltd Pile driving guide.
NL2017560B1 (en) 2016-09-30 2018-04-10 Ihc Iqip Uk Ltd Pile guide comprising a base frame and a guide member
CN106695614B (zh) * 2016-12-28 2019-01-11 山东大学 一种用于圆钢竖向调直的装置与方法
KR102457037B1 (ko) * 2021-04-21 2022-10-21 최병렬 선 파일관입공법을 위한 템플릿 구조물과 이를 이용한 해양 하부 구조물 설치방법

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GB2054710A (en) * 1979-05-25 1981-02-18 Cjb Bearl & Wright Ltd Levelling seabed templates
NL1029056C1 (nl) * 2005-05-17 2005-10-03 Pieter Den Breejen Het exact plaatsen van de pijlers.
GB2460172A (en) * 2008-05-24 2009-11-25 Marine Current Turbines Ltd Installation of a pile in the seabed using a guide structure
GB2467842A (en) * 2009-02-12 2010-08-18 Marine Current Turbines Ltd A submerged support structure with adjustable feet secured by piling

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
GB2054710A (en) * 1979-05-25 1981-02-18 Cjb Bearl & Wright Ltd Levelling seabed templates
NL1029056C1 (nl) * 2005-05-17 2005-10-03 Pieter Den Breejen Het exact plaatsen van de pijlers.
GB2460172A (en) * 2008-05-24 2009-11-25 Marine Current Turbines Ltd Installation of a pile in the seabed using a guide structure
GB2467842A (en) * 2009-02-12 2010-08-18 Marine Current Turbines Ltd A submerged support structure with adjustable feet secured by piling

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011147481A3 (en) * 2010-05-28 2012-10-18 Siemens Aktiengesellschaft Offshore foundation structure, offshore foundation and method of establishing the same
US8834071B2 (en) 2011-02-22 2014-09-16 GeoSea N.V. Device for manufacturing a foundation for a mass located at height, associated method and assembly of the device and a jack-up platform
BE1019832A4 (nl) * 2011-02-22 2013-01-08 Geosea N V Inrichting voor het vervaardigen van een fundering voor een zich op hoogte bevindende massa, bijbehorende werkwijze en samenstel van de inrichting en een opvijzelbaar platform.
EP2492401A1 (de) * 2011-02-22 2012-08-29 GeoSea NV Vorrichtung zur Herstellung eines Fundaments für eine hoch liegende Masse, zugehöriges Verfahren und Aufstellung von der Vorrichtung und einer jack-up Plattform
US8926226B2 (en) 2011-02-22 2015-01-06 GeoSea N.V. Device for manufacturing a foundation for a mass located at height, associated method and assembly of the device and a jack-up platform
NL2007166C2 (en) * 2011-07-22 2013-01-24 Ballast Nedam Offshore B V Re-usable guiding frame.
EP2565329A3 (de) * 2011-08-31 2013-05-29 STRABAG Offshore Wind GmbH Rammschablone für die Installation von Stahl-Jacket- Gründungen am Meeresboden
EP2565329A2 (de) 2011-08-31 2013-03-06 STRABAG Offshore Wind GmbH Rammschablone für die Installation von Stahl-Jacket- Gründungen am Meeresboden
DE102011112026A1 (de) 2011-08-31 2013-02-28 Strabag Offshore Wind Gmbh Verfahren zum Installieren einer Stahl-Jacket-Gründung auf einem Meeresboden mittels einer Ramm-, Bohr- oder Schraubschablone und Schraub- oder Rammschablone für die Installation von Stahl-Jacket-Gründungen
WO2013043055A1 (en) 2011-09-23 2013-03-28 Installer As Norwind Template
CN104563155A (zh) * 2013-10-18 2015-04-29 中国海洋石油总公司 扩展基础的导管架
WO2016005617A1 (es) * 2014-07-10 2016-01-14 Drace Infraestructuras, S.A. Método y sistema de fondeo autónomo para cimentaciones de estructuras offshore
US10400416B2 (en) 2014-07-10 2019-09-03 Drace Infraestructuras, S.A. Autonomous anchoring method and system for foundations of offshore structures
WO2016144185A1 (en) * 2015-03-09 2016-09-15 Owec Tower As Apparatus and methods for installing a substructure
CN107636234A (zh) * 2015-03-09 2018-01-26 欧威克高塔公司 安装子结构的装置和方法
CN107119686A (zh) * 2017-04-19 2017-09-01 合肥学院 一种海上潮间带风电基础沉桩限位架及其施工方法
CN110832143A (zh) * 2017-06-14 2020-02-21 Ihc荷兰Ie有限公司 一种模板及使用该模板的方法
CN110832143B (zh) * 2017-06-14 2022-04-15 Ihc荷兰Ie有限公司 一种模板及使用该模板的方法
WO2019057827A1 (en) 2017-09-22 2019-03-28 Jan De Nul N.V. REUSABLE SEA INSTALLATION TEMPLATE AND USE THEREOF
US20210246623A1 (en) * 2018-06-18 2021-08-12 Vallourec Deutschland Gmbh Device for verifying the bearing capacity of a pile of an offshore foundation construction
NL2025754A (en) * 2020-04-08 2021-10-27 Heerema Marine Contractors Nl Devices and methods for installing piles into the ground or seabed
NL2025753A (en) * 2020-04-08 2021-10-27 Heerema Marine Contractors Nl Devices and methods for installing piles into the ground or seabed
CN112411603A (zh) * 2020-11-21 2021-02-26 南通泰胜蓝岛海洋工程有限公司 一种海上风电升压站的安装施工工艺
CN115233679A (zh) * 2022-07-19 2022-10-25 张家港江苏科技大学产业技术研究院 一种结构强度高的水下导向架
CN115233679B (zh) * 2022-07-19 2024-04-02 张家港江苏科技大学产业技术研究院 一种结构强度高的水下导向架
CN116289936A (zh) * 2023-02-22 2023-06-23 交通运输部广州打捞局 海上插桩施工装置及施工工艺

Also Published As

Publication number Publication date
NO20093082A1 (no) 2011-04-04
EP2325398A1 (de) 2011-05-25

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