EP4286592A2 - Procédé d'installation d'un support pour supporter une structure de charge, telle qu'une éolienne, par exemple sur un fond marin - Google Patents

Procédé d'installation d'un support pour supporter une structure de charge, telle qu'une éolienne, par exemple sur un fond marin Download PDF

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Publication number
EP4286592A2
EP4286592A2 EP23205261.3A EP23205261A EP4286592A2 EP 4286592 A2 EP4286592 A2 EP 4286592A2 EP 23205261 A EP23205261 A EP 23205261A EP 4286592 A2 EP4286592 A2 EP 4286592A2
Authority
EP
European Patent Office
Prior art keywords
pile
jacket
bed
floor
piles
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.)
Pending
Application number
EP23205261.3A
Other languages
German (de)
English (en)
Other versions
EP4286592A3 (fr
Inventor
Paul Marius Antonius Vernimmen
Stefan Petrus Hendrik ERENTS
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.)
Van Oord Offshore Wind BV
Original Assignee
Van Oord Offshore Wind BV
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 Van Oord Offshore Wind BV filed Critical Van Oord Offshore Wind BV
Publication of EP4286592A2 publication Critical patent/EP4286592A2/fr
Publication of EP4286592A3 publication Critical patent/EP4286592A3/fr
Pending legal-status Critical Current

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Classifications

    • 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
    • E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
    • E02B17/027—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto steel 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
    • E02B2017/0039—Methods for placing the offshore structure
    • E02B2017/0043—Placing the offshore structure on a pre-installed foundation 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
    • E02B2017/0039—Methods for placing the offshore structure
    • E02B2017/0047—Methods for placing the offshore structure using a barge
    • 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 present invention relates to a jacket for supporting a load structure, such as a wind turbine or transformer platform or an oil or gas platform, thereon on bed, floor or bottom of, for instance, a sea, ocean, lake, harbor or river.
  • a load structure such as a wind turbine or transformer platform or an oil or gas platform
  • a commonly used form of offshore support structure consists of a stand-alone multi-legged unit, the offshore jacket, made of steel which is stabbed onto pre-driven or otherwise embedded piles or having post-driven piles and then grouted to fixate it to the sea bed.
  • Jackets are produced and assembled on land and, subsequently, transported to the offshore site and thereby installed.
  • considerable size of the jackets which can reach tens of meters of height, considerable resources and extensive costs are involved in the production, assembly, stocking, logistics and load-out, transportation and installation of these structures.
  • piles having the function of securing the jacket to the sea bed are driven into the sea bed by means of a hammer using a multi-use piling frame called a "piling template" which is removed once the piling operations are terminated.
  • a multi-use template implies that additional substantial temporary resources have to be provided in addition to the transportation, storing and handling of the large size offshore jackets.
  • the pre-driven piles require to be emptied of seabed material over sufficient length to accommodate the stabbing sections of the offshore jacket, as a result of their limited protrusion above the seabed.
  • the use of the multi-use piling template, to be removed after piling operations will imply considerable economical and logistic costs related to its production, stocking, transportation and installation/removal.
  • the use of a multi-use piling template as a template for the installation of the piles implies that the footprint widths of the multiple jackets to be installed is bound by the geometry of a multi-use piling template for the installation of the jackets.
  • the use of a multi-use piling template as a template for the installation of the piles requires a complex system of measurement and adjustment of the entire framework to adjust to any unevenness of the sea bed to achieve consistent verticality of the piles.
  • CN 102535510 A discloses a method comprising the following steps: A) arranging a jacket platform at the upper end of the jacket body and connecting the jacket platform and the jacket body into a whole; B) placing the jacket body on the seabed; C) inserting tubular piles into the jacket legs and firmly fixing the piles in the seabed; and D) grouting cement plaster into the clearances between the tubular piles and the jacket legs.
  • US 2013/272796 A1 discloses an offshore support tower assembly comprising a base disposed at the sea floor.
  • the support tower assembly comprises a plurality of anchors securing the base to the sea floor.
  • the support tower assembly comprises a support frame coupled to the base.
  • the support frame comprises plurality of modular tower sections in a stacked arrangement.
  • the support tower assembly also comprises a deck supported by the support frame.
  • Embodiments and present disclosure provide a jacket for supporting a load structure, such as a wind turbine or transformer platform or an oil or gas platform, on a bed, floor or bottom of, for instance a sea, ocean, lake, harbor or river, as set out in claims.
  • a load structure such as a wind turbine or transformer platform or an oil or gas platform
  • a jacket (10) for supporting a load structure such as a wind turbine or a transformer platform or an oil or gas platform, thereon on a bed, floor or bottom of, for instance a sea, ocean, lake, harbor or river.
  • a load structure such as a wind turbine or a transformer platform or an oil or gas platform
  • the embodiments will be described with reference to a "sea bed” but generally apply to ocean, lake, harbor, river beds or floors or bottoms as well, or any other relevant bed, bottom or floor or the like.
  • the embodiments will further be described with reference to "offshore” but generally apply to an inshore location, a port, a harbor or equivalents, or any other relevant location as well.
  • FIGs 1A, 1B and 2B schematically show top and front views ( Figures 1A and 1B ) and an isometric view ( Figure 2A ) of an embodiment of an offshore support 100 which can be installed by using the method to which this invention relates.
  • the offshore support structure 100 comprises an offshore jacket 10, a pile guiding frame 20 and a plurality of piles 30 passing through pile holding sections 21 of the pile guiding frame 20.
  • the piles are configured to support the load of the offshore jacket 10 and of any load structure, such as a wind turbine, mounted on it.
  • the offshore jacket 10 includes at least three pillars 12 interconnected by a plurality of beams (or bracings).
  • the pile guiding frame 20 comprises, at its outside perimeter, a same number of pile holding sections 21 as the number of pillars of the offshore jacket 10, interconnected by diagonal cross-beams 25 and horizontal beams 26.
  • Each of the plurality of the pile holding sections 21 is configured to confine a pile 30 in a horizontal direction, so that the pile is held in a substantially vertical orientation.
  • each pile holding section 21 comprises a pile stabbing cone 22 at the top of each pile holding section providing a guidance of the associated pile 30 when stabbing the associated pile into a respective pile holding section during piling operations.
  • the elements of the offshore support structure 100 i.e. the pile guiding frame 20, the piles 30 and the offshore jacket 10, are transported on vessels or barges to the offshore installation site and there set down on the sea bed by means of cranes or equivalents.
  • the pile guiding frame 20 is lowered onto the sea bed.
  • the pile guiding frame 20 comprises at least three interconnected pile holding sections 21 at an outside perimeter of the pile guiding frame 20 in the embodiment shown, wherein the perimeter constituted by the bottom ends of the pile holding sections, proximal to the sea bed, may have a form of any regular or irregular polygonal shape, reflecting the shape of the offshore jacket to be positioned onto the piles.
  • the pile holding sections 21 are interconnected by diagonal cross-beams 25 and horizontal beams 26 in order to maintain a mutually fixed position and parallelism between the pile holding sections and to provide rigidity.
  • the pile guiding frame 20 is used during piling operations to eliminate the use of a removable piling template.
  • the pile guiding frame 20 provides stiffness and strength to the piles.
  • the use of such a permanent pile guiding frame 20 allows the customization of the spacing of the plurality of piles used to support the offshore jacket 10 to suit the water depth and seabed situation at each individual location.
  • the pile guiding frame 20 comprises a footing 23 configured to contact the sea bed and to give stability to the pile guiding frame 20.
  • the footing 23 includes a system for adjusting the vertical position of each pile holding section 21 in order to achieve verticality of the piles 30 and ultimately the support structure 100, depending on the unevenness of the seabed at the installation location.
  • the footing 23 may be placed in correspondence to each one of the pile holding sections 21 or may be positioned outside or inside the perimeter formed by the bottom ends of the pile holding sections. In these cases, the footing 23 is connected to the pile guiding frame 30 by means of bracings or equivalents.
  • This invention encompasses all embodiments in which the number of pile holding sections is larger than two, i.e. this invention is not limited to three, as shown for the embodiment in Figures 1A to 2D , or to four, as shown for the embodiment in Figures 3A to 4B , pile holding sections 21.
  • the pile holding sections 21 are substantially of the same length and are configured such that their bottom ends, proximal to the seabed, are coplanar with the plane formed by the sea bed.
  • the pile holding sections can be of different lengths in an alternative embodiment.
  • Each pile holding section 21 is configured to allow the guidance of a pile 30 and its maintaining along a guiding direction G in a substantially vertical orientation.
  • the pile holding sections 21 comprise a hollow column, configured to receive the pile and fitted with a centralizer fitting to guide the associated pile when stabbing the associated pile into a respective pile holding section during piling operations.
  • the pile holding sections 21 are fitted with a system for permanent fixation to the pile by means of grout or an alternative mechanical means of fixation such as by using wedges or hydraulic pistons to clamp the pile within a respective pile holding section.
  • the piles 30 are secured to the pile holding sections 21 at the top end and bottom end of the pile holding sections and at positions A at which the diagonal cross-beams 25 are connected to the associated pile holding sections to provide strength and rigidity to the structure of the pile guiding frame 21 and the piles 30 driven through and secured to the pile holding sections.
  • Strength and rigidity is further provided by having the diagonal cross-beams 25 connected at the top end and the bottom end of the respective pile holding sections, and to have a longitudinal direction of each respective diagonal cross-beam 25 and the pile guiding direction G of a pile holding section 21 to which the respective cross-beam is connected enclose an angle ⁇ in the range of 25 - 65 degrees, especially in the range of 35 - 55 degrees.
  • the pile guiding frame 21 further has horizontal beams 26 connected in between pile holding sections at those locations where the diagonal cross-beams 25 are connected as well to further add to the strength and rigidity of the jointly rigid structure.
  • the piles 30, having a tubular shape, are driven into the sea bed to a sufficient depth so as to be capable of securing the offshore jacket 10 to the sea bed and of supporting the load of the offshore jacket 10 and of any structure mounted on it.
  • the piles 30 are driven into the sea bed so as to extend considerably above the sea bed and to also extend above the pile guiding frame 20, thus, allowing the use of a shorter offshore jacket 10 than the commonly used ones. It also allows a constant and selected distance of the top of the offshore jackets with respect to the surface of the sea with varying sea depth and spread locations of the supports of pile guiding frames, piles and offshore jackets over the sea bed.
  • the projection length P (or stickup length) of the piles above the pile holding sections 21 of the pile guiding frame 20 can be, dependent on the specific application and circumstances, in the range of 1 - 10 times the diameter D of the piles, especially 2-5 times the diameter of the piles.
  • the piles stick out over a projection length P of about 3.5 times the pile diameter D above the pile holding sections 21 in the embodiment shown.
  • the jointly rigid structure of the pile guiding frame and the piles secured to the frame allow for a large upward stick out of the piles from the pile guiding frame.
  • the piles can have any diameter but typically will be in the range of 2 - 3 meter, which implies that projection or stickup length P can be up to 20 - 30 meter under favorable conditions.
  • the projection length P will be in the range of 2 - 10 meter.
  • a pile guiding frame 20 can have a height of, for instance, 20 meter for application at a water depth of, for instance, 45 meter. The fact that piles extend well above the sea bed implies the additional advantage that no emptying of the piles is required before providing the offshore jacket 10 onto the piles.
  • the offshore jacket 10 in the embodiment shown comprises a plurality of legs or pillars 12 interconnected by beams, bracings or equivalents which are configured to maintain a mutually fixed position between the plurality of legs.
  • the offshore jacket 10 may further comprise stabbing projections 11 on its outer perimeter in correspondence to the bottom end of each leg 12.
  • the pile guiding frame 20 and the piles 30 driven through the pile holding sections 21 of the pile guiding frame 20 together form a jointly rigid structure confining movement of the piles. ⁇
  • the offshore jacket 10 is lowered from the vessel towards the piles 30 driven through the pile holding sections 21 such that each one of the stabbing projections 11 is provided onto and secured to an associated pile 30 driven into the sea bed and such that the offshore jacket 10 projects at least partially out of the water surface W.
  • Each stabbing projection 11 is connected by means of a grouted connection or a mechanical connection to its associated pile 30.
  • the offshore jacket 10 may be installed in a position below the water surface W.
  • the offshore jacket 10 may be secured to the piles 30 by means of at least one of a grouted connection or a mechanical connection.
  • the piles 30 provide support forthe load of the offshore jacket 10 and of any structure mounted on it.
  • each one of the stabbing projections 11 fits into an inner circumference of the associated pile 30.
  • at least one of the stabbing projections 11 may comprise a jacket supporting skirt 13 protruding from at least a part of an outer perimeter of the stabbing projection 11 in a substantially radial direction and configured to couple with the associated pile 30 and, optionally, to transfer the load of the offshore jacket 10.
  • the stabbing projections 11 have a hollow cylindrical shape and are configured to allow the insertion of an upper portion of the associated piles 30, such that each one of the piles 30 fits into an inner circumference of the associated stabbing projection 11.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Foundations (AREA)
  • Wind Motors (AREA)
EP23205261.3A 2020-01-10 2021-01-07 Procédé d'installation d'un support pour supporter une structure de charge, telle qu'une éolienne, par exemple sur un fond marin Pending EP4286592A3 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL2024640A NL2024640B1 (en) 2020-01-10 2020-01-10 Method of Installing a Support for Supporting a Load Structure, such as a Wind Turbine, on, for instance, a Sea Bed
PCT/NL2021/050007 WO2021141490A1 (fr) 2020-01-10 2021-01-07 Procédé d'installation d'un support pour supporter une structure de charge, telle qu'une éolienne, sur, par exemple, un fond marin
EP21700096.7A EP4087980B1 (fr) 2020-01-10 2021-01-07 Procédé d'installation d'un support pour supporter une structure de charge, telle qu'une éolienne, sur, par exemple, un fond marin

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP21700096.7A Division EP4087980B1 (fr) 2020-01-10 2021-01-07 Procédé d'installation d'un support pour supporter une structure de charge, telle qu'une éolienne, sur, par exemple, un fond marin

Publications (2)

Publication Number Publication Date
EP4286592A2 true EP4286592A2 (fr) 2023-12-06
EP4286592A3 EP4286592A3 (fr) 2024-02-14

Family

ID=70614508

Family Applications (2)

Application Number Title Priority Date Filing Date
EP21700096.7A Active EP4087980B1 (fr) 2020-01-10 2021-01-07 Procédé d'installation d'un support pour supporter une structure de charge, telle qu'une éolienne, sur, par exemple, un fond marin
EP23205261.3A Pending EP4286592A3 (fr) 2020-01-10 2021-01-07 Procédé d'installation d'un support pour supporter une structure de charge, telle qu'une éolienne, par exemple sur un fond marin

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP21700096.7A Active EP4087980B1 (fr) 2020-01-10 2021-01-07 Procédé d'installation d'un support pour supporter une structure de charge, telle qu'une éolienne, sur, par exemple, un fond marin

Country Status (5)

Country Link
EP (2) EP4087980B1 (fr)
KR (1) KR20220122760A (fr)
NL (1) NL2024640B1 (fr)
TW (1) TWI826763B (fr)
WO (1) WO2021141490A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113622399A (zh) * 2021-08-19 2021-11-09 中交第三航务工程局有限公司 一种海上风电四桩导管架基础施工用装配式平台
KR102693366B1 (ko) * 2022-09-22 2024-08-09 현대건설(주) 상부 및 하부 구조물로 분리된 프리파일링 시공용 자켓 및 인공신경망 모듈을 활용한 그 시공 방법
KR102645338B1 (ko) * 2023-06-07 2024-03-08 롯데건설 주식회사 해저공간 플랫폼 승강시스템

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102535510A (zh) 2012-02-27 2012-07-04 广东明阳风电产业集团有限公司 海上风机导管架基础安装方法及一体化导管架装置
US20130272796A1 (en) 2011-09-26 2013-10-17 Horton Wison Deepwater, Inc. Modular Relocatable Offshore Support Tower

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
US6299385B1 (en) * 1999-08-04 2001-10-09 Paragon Engineering Services Incorporated Mini-jacket and method for installation using caisson
CN101694093B (zh) * 2009-10-12 2011-08-10 中铁大桥局集团第四工程有限公司 钢管支承桩插打时快速定位和连接系统及其施工方法
GB201206400D0 (en) * 2012-04-11 2012-05-23 Offshore Group Newcastle Ltd Offshore structure installation
CN102852154A (zh) * 2012-08-01 2013-01-02 天津大学 一种复合桩基
CN102936888B (zh) * 2012-11-09 2015-01-28 中国水电顾问集团华东勘测设计研究院 自主安装式海上升压站结构及其安装方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130272796A1 (en) 2011-09-26 2013-10-17 Horton Wison Deepwater, Inc. Modular Relocatable Offshore Support Tower
CN102535510A (zh) 2012-02-27 2012-07-04 广东明阳风电产业集团有限公司 海上风机导管架基础安装方法及一体化导管架装置

Also Published As

Publication number Publication date
NL2024640B1 (en) 2021-09-07
KR20220122760A (ko) 2022-09-02
EP4087980B1 (fr) 2023-10-25
EP4286592A3 (fr) 2024-02-14
TW202142762A (zh) 2021-11-16
EP4087980A1 (fr) 2022-11-16
TWI826763B (zh) 2023-12-21
WO2021141490A1 (fr) 2021-07-15
EP4087980C0 (fr) 2023-10-25

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