EP2700749B1 - Structure de support offshore, notamment pour une éolienne - Google Patents

Structure de support offshore, notamment pour une éolienne Download PDF

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Publication number
EP2700749B1
EP2700749B1 EP13075051.6A EP13075051A EP2700749B1 EP 2700749 B1 EP2700749 B1 EP 2700749B1 EP 13075051 A EP13075051 A EP 13075051A EP 2700749 B1 EP2700749 B1 EP 2700749B1
Authority
EP
European Patent Office
Prior art keywords
supporting
modules
supporting structure
struts
structure according
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.)
Active
Application number
EP13075051.6A
Other languages
German (de)
English (en)
Other versions
EP2700749A3 (fr
EP2700749A2 (fr
Inventor
Jörn WINKELS
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.)
Salzgitter Mannesmann Line Pipe GmbH
Original Assignee
Salzgitter Mannesmann Line Pipe GmbH
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 Salzgitter Mannesmann Line Pipe GmbH filed Critical Salzgitter Mannesmann Line Pipe GmbH
Priority to PL13075051T priority Critical patent/PL2700749T3/pl
Publication of EP2700749A2 publication Critical patent/EP2700749A2/fr
Publication of EP2700749A3 publication Critical patent/EP2700749A3/fr
Application granted granted Critical
Publication of EP2700749B1 publication Critical patent/EP2700749B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E02B17/0017—Means for protecting offshore constructions
    • E02B17/0026—Means for protecting offshore constructions against corrosion
    • 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
    • E02B2017/006—Platforms with supporting legs with lattice style supporting legs
    • 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 the support structure of an offshore structure, in particular a wind turbine according to the preamble of patent claim 1.
  • Previous offshore wind turbines can be divided into two construction areas.
  • the first part is the highly fatigued load-bearing structure. This begins at the seabed and reaches its end at the flange connection to the tower of the wind turbine.
  • the flange connection carries the tower and the turbine and dissipates the resulting loads and impacts.
  • the second part is the actual foundation, which e.g. is designed as a foundation element that can be anchored to the seabed or as a gravity foundation.
  • the foundation absorbs the loads caused by the supporting structure, the tower and the wind turbine, discharges them into the seabed.
  • the entire construction, consisting of foundation with foundation and supporting structure as well as tower and turbine, is called offshore wind energy plant (OWEA).
  • lattice mast constructions are known from the prior art as support structures (EP 2 067 913 A2 or DE 20 2011 101 599 U1 ), which are formed as three-dimensional frameworks.
  • lattice structure When in the EP 2 067 913 A2 described lattice structure consists of the lattice structure of several truss frames, which in turn consist of vertical or slightly inclined support struts in the edge or corner areas and preferably diagonal struts to stiffen. Since the individual supporting stiffening struts of the truss frame collide at one point, separately manufactured knot parts are provided, with which the branching in different directions of the truss struts can be interconnected. In this case, the entire assembled from individual parts construction is designed for each specific case.
  • a disadvantage of these known lattice mast constructions is on the one hand the complex design, in which the struts of the individual truss frames must be connected to each other by means of separately manufactured knot parts.
  • a further disadvantage is the complex adaptation of the construction to different static requirements, i. each individual productions are necessary, which require high planning, manufacturing and assembly costs and thus are not optimally designed from an economic point of view.
  • the object of the invention is to provide a support structure of an offshore structure, in particular a wind turbine, which is easily and inexpensively adaptable to different static requirements and significantly reduces the planning, production and assembly costs.
  • the teaching of the invention comprises a support structure of an offshore structure, in particular a wind turbine, consisting of at least one base module with a predetermined static load capacity, wherein the base module consists of at least two modular-like sub-modules with a predetermined static load capacity and the sub-modules of support plates with supporting struts arranged therebetween and between the support struts arranged stiffening struts are composed and wherein the stiffening struts are arranged with the support struts outside the connection points of the support struts with the support plates and thus node-free.
  • the support structure consists of at least two modularly stacked and / or juxtaposed and interconnected basic modules with a predetermined static load capacity in order to realize so various forms of foundation structures can.
  • the invention is advantageously suitable for offshore wind turbines, it is not limited thereto. Also conceivable is an advantageous use, e.g. as a support structure for drilling platforms.
  • the invention involves a cost effective and time saving design which is flexible to different static requirements reacts and can be dispensed with separately prepared node parts.
  • the main benefit lies in the fact that can be significantly reduced by the modular assembly of the support structure of statically predetermined submodules to a statically predetermined basic module and the juxtaposition of the individual basic modules ultimately to a support structure of the planning and production costs.
  • the individual basic modules are stacked one on the other up to the required height, or e.g. for drilling platforms juxtaposed and connected to each other.
  • the sub-modules can be easily prefabricated according to the static requirements as a standard module and factory assembled into a basic module, the manufacturing cost and installation time is significantly reduced on the site, which significantly reduces the overall cost of manufacturing and assembly of the support structure.
  • stiffening struts of the individual submodules of the support structure are arranged knot-free outside the joints of the support struts with the support plates, so no branches are required at the joints for static reasons, can be dispensed with node parts, which significantly reduces manufacturing costs.
  • the support structure according to the invention is therefore much easier to implement faster and cheaper.
  • the floor plan of the basic modules can be flexibly adapted to the respective requirements.
  • hexagonal, octagonal or polygonal base areas can also be realized.
  • the sub-modules in plan view are also arbitrarily designed, which are advantageously triangular, rectangular or square, so that they can be assembled as required to differently designed base surfaces of the basic module. It is thus possible, for example, to create a hexagonal, octagonal or polygon as a floor plan for the basic module of the supporting structure from a plurality of substructures that are triangular in plan view, so that a diverse geometrical layout of the supporting structure that can be adapted to the requirements is made possible.
  • the support plates of the sub-modules e.g. can be made of heavy plate steel
  • the supporting and reinforcing struts are preferably made of seamless or welded steel tubes whose geometry (diameter, wall thickness) and material are adapted to the different static requirements.
  • the individual support struts are not formed from one, the static requirements correspondingly dimensioned single tube, but from a bamboo-like composite tube bundle.
  • the individual tubes of the tube bundle are arranged like a bamboo, e.g. with a central tube with arranged over the circumference of other tubes.
  • annular structures conceivable in which pipes are fixedly arranged and connected to one another on a circular ring or on a plurality of concentric circles.
  • all components of the supporting structure may advantageously be provided with a coating and / or with cathodic corrosion protection (KKS).
  • KKS cathodic corrosion protection
  • the basic modules are made from already prefabricated sub-modules, which significantly reduces the construction time and thus the production costs.
  • the support plates are cut according to the floor plan of the basic modules or the support structure to be produced for the individual sub-modules and then arranged the supporting and reinforcing struts between the support plates and welded.
  • the prefabricated sub-modules are then assembled according to the required floor plan of the basic module.
  • a basic module already have the required floor plan of the entire support structure or the floor plan of the support structure is generated by joining together several basic modules in a plane.
  • sleeve-like receptacles by means of which the support struts are quasi connected with positive guidance with the support plates.
  • These sleeve-like receptacles may be, for example, with the support plates welded pipe sections which have a slightly larger diameter than the support struts to be introduced therein.
  • the support struts then the stiffening struts are arranged in such a way that they are outside the joints of support struts and support plates of the stacked basic modules , so that can be dispensed on node parts.
  • the stiffening struts are advantageously oriented diagonally in the vertical direction and connect each two support struts of a sub-module.
  • the required total height of the supporting structure is achieved by a stacking of the individual basic modules, wherein the support plates of the assembled from the submodules basic module, which is placed on the respective lower, act as intermediate plates.
  • these intermediate plates advantageously on both the top and on the bottom sleeve-like receptacles for the respectively above and below the support plates to be connected support struts.
  • the basic modules to be stacked on each have a decreasing base area.
  • the support struts of the sub-modules are not arranged one above the other, but offset in the plane, as this advantageously contributes to increasing the rigidity of the overall construction.
  • connection points of the support struts with the support plate with the sleeve-like receptacles can be additionally protected separately.
  • FIG. 1 shows a schematic representation of a sub-module according to the invention of a support structure in triangular shape.
  • the sub-module 1 according to the invention consists of support plates 4, 4 ', between which support struts 2 and stiffening struts 3 are arranged.
  • the stiffening struts 3 with the support struts 2 are knot-free outside the connection points of the support struts 2 with the support plates 4, 4 '.
  • FIG. 2 shows, as an example, a schematic representation of a rectangular base module 5 composed of triangular submodules 1, which is joined together with another basic module 5 to form a supporting structure which can be used, for example, for a drilling platform.
  • FIG. 3 shows as a further application example, the top view of a 3-tier support structure of stacked basic modules 5 ', 5 ", 5'” of a wind turbine, consisting of circular and arranged to basic modules 5 ', 5 “, 5"' triangular sub-modules 1.
  • the essentially circular basic modules 5 ', 5 “, 5'” are stacked in tiers, wherein the base areas of each stacked basic modules 5 ', 5 ", 5"' are smaller, so that there is a pyramidal shape, as shown in the 3-D View in FIG. 4 can be seen.
  • the lowermost base module 5 'at the top and bottom each have the same size support plates 4, 4', wherein the upper support plates 4 of the base module 5 'as the lower support plates
  • the support struts 2 are then arranged in a circle in such a way that a smaller base area of the basic module 5" placed on the basic module 5 'results on the tra plates 4 of the basic module 5'.
  • the support plates 4 "arranged on the support struts 2 of the basic module 5" then again form the lower support plates of the basic module 5 "'provided with an even smaller base area.
  • the support struts 2 of the sub-modules 1 are not arranged one above the other in alignment, but are offset in the plane at an angle, which advantageously contributes to increasing the rigidity of the overall construction.
  • the FIG. 4 can be seen that the support struts 2 in sleeve-like receptacles 6, which are arranged on or below the support plates, positioned and thus firmly connected.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Wind Motors (AREA)
  • Foundations (AREA)

Claims (13)

  1. Structure porteuse d'une plateforme en mer, en particulier d'une installation d'énergie éolienne, dans laquelle la structure porteuse est constituée d'au moins un module de base (5, 5', 5", 5"') avec une capacité de charge statique prédéterminée et dans laquelle le module de base (5, 5', 5", 5"') est constitué d'au moins deux modules partiels (1) avec une capacité de charge statique prédéterminée et qui sont assemblés de façon modulaire,
    caractérisée en ce que
    les modules partiels (1) sont assemblés à partir de plaques de support (4, 4', 4", 4"'), avec des traverses de support (2) qui sont disposées entre lesdits modules partiels et avec des traverses de renforcement (3) qui sont disposées entre les traverses de support (2) ; et
    caractérisée en ce que
    les traverses de renforcement (3) sont disposées à l'extérieur du point de jonction des traverses de support (2) avec la plaque de support (4, 4', 4", 4"') et sont par conséquent dépourvues de noeud.
  2. Structure porteuse selon la revendication 1,
    caractérisée en ce que
    la structure porteuse est constituée d'au moins deux modules de base (5, 5', 5", 5"') avec une capacité de charge statique prédéterminée, lesquels sont superposés de façon modulaire et/ou disposés l'un à côté de l'autre de façon modulaire et reliés l'un à l'autre.
  3. Structure porteuse selon la revendication 1,
    caractérisée en ce que
    les modules de base (5, 5', 5", 5"') sont assemblés à partir de modules partiels (1) qui sont déjà préfabriqués.
  4. Structure porteuse selon les revendications 1 et 2,
    caractérisée en ce que
    les plaques de support (4, 4', 4", 4"') présentent des logements en forme de manchon en vue de la fixation des traverses de support (2) des modules partiels (1).
  5. Structure porteuse selon l'une des revendications 1 à 3,
    caractérisée en ce que
    le module partiel (1) présente une surface de base de forme triangulaire ou rectangulaire ou quadratique.
  6. Structure porteuse selon l'une des revendications 1 à 4,
    caractérisée en ce que
    le module de base (5, 5', 5", 5'") présente une surface de base de forme triangulaire ou rectangulaire ou quadratique ou polygonale.
  7. Structure porteuse selon l'une des revendications 1 à 5,
    caractérisée en ce que
    la plaque de support (4, 4', 4", 4"') est fabriquée à partir de tôle forte en acier et les traverses de support (2) ainsi que les traverses de renforcement (3) sont fabriquées à partir de tubes en acier soudés ou sans soudure.
  8. Structure porteuse selon la revendication 6,
    caractérisée en ce que
    les diverses traverses de support (2) sont constituées de faisceaux de plusieurs tubes.
  9. Structure porteuse selon l'une des revendications 1 à 7,
    caractérisée en ce que
    la plaque de support (4, 4', 4", 4"') est conçue en forme de cuve et est remplie d'un scellement qui protège de la corrosion les points de jonction avec les traverses de support (2).
  10. Structure porteuse selon l'une des revendications 1 à 8,
    caractérisée en ce que
    en vue de la réalisation d'un agencement pyramidal des modules de base (5, 5', 5", 5'") individuels superposés, ces derniers présentent respectivement une surface de base allant en se rétrécissant.
  11. Structure porteuse selon l'une des revendications 1 à 9,
    caractérisée en ce que
    ladite structure porteuse est pourvue d'une protection passive et/ou active contre la corrosion.
  12. Utilisation d'une structure porteuse selon l'une ou plusieurs des revendications 1 à 10 pour des installations d'énergie éolienne ou pour des plateformes de forage.
  13. Procédé destiné à la fabrication d'une structure porteuse pour une plateforme en mer selon l'une ou plusieurs des revendications 1 à 11,
    comprenant la phase de la production de modules partiels préfabriqués, déterminés de manière statique, l'assemblage des modules partiels en un ou en plusieurs modules de base déterminés de manière statique, la superposition ou la juxtaposition, ainsi que la jonction sans noeud des modules de bases entre eux jusqu'à la hauteur prévue de la structure porteuse.
EP13075051.6A 2012-08-22 2013-08-01 Structure de support offshore, notamment pour une éolienne Active EP2700749B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13075051T PL2700749T3 (pl) 2012-08-22 2013-08-01 Struktura nośna budowli przybrzeżnej, zwłaszcza turbiny wiatrowej

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012016915.9A DE102012016915B4 (de) 2012-08-22 2012-08-22 Tragstruktur eines Offshore-Bauwerks, insbesondere einer Windenergieanlage, Verwendung einer derartigen Tragstruktur, sowie Verfahren zu deren Herstellung

Publications (3)

Publication Number Publication Date
EP2700749A2 EP2700749A2 (fr) 2014-02-26
EP2700749A3 EP2700749A3 (fr) 2016-08-24
EP2700749B1 true EP2700749B1 (fr) 2017-10-04

Family

ID=49035261

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13075051.6A Active EP2700749B1 (fr) 2012-08-22 2013-08-01 Structure de support offshore, notamment pour une éolienne

Country Status (6)

Country Link
EP (1) EP2700749B1 (fr)
DE (1) DE102012016915B4 (fr)
DK (1) DK2700749T3 (fr)
LT (1) LT2700749T (fr)
NO (1) NO2841675T3 (fr)
PL (1) PL2700749T3 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906734A (en) * 1973-08-23 1975-09-23 Texaco Inc Fixed marine platform with dispersed base
GB2176524B (en) * 1984-04-12 1988-06-22 Pinii Rostov Promy Reinforced concrete offshore platform
FR2760474B1 (fr) * 1997-03-07 1999-05-28 Technip Geoproduction Procede d'assemblage de troncons de jambes de support d'une plate-forme petroliere
EP2067913A2 (fr) 2007-12-04 2009-06-10 WeserWind GmbH Structure de grille d'une construction offshore, en particulier d'une éolienne offshore
DE202011101599U1 (de) 2011-05-12 2011-09-23 Emilio Reales Bertomeo Offshore-Fundament für Windenergieanlagen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DK2700749T3 (en) 2018-01-02
EP2700749A3 (fr) 2016-08-24
LT2700749T (lt) 2017-11-27
PL2700749T3 (pl) 2018-03-30
DE102012016915B4 (de) 2017-10-19
EP2700749A2 (fr) 2014-02-26
DE102012016915A1 (de) 2014-02-27
NO2841675T3 (fr) 2018-05-05

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