EP3255211B1 - Jack-up bridge structure - Google Patents

Jack-up bridge structure Download PDF

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Publication number
EP3255211B1
EP3255211B1 EP16173994.1A EP16173994A EP3255211B1 EP 3255211 B1 EP3255211 B1 EP 3255211B1 EP 16173994 A EP16173994 A EP 16173994A EP 3255211 B1 EP3255211 B1 EP 3255211B1
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EP
European Patent Office
Prior art keywords
jack
bridge structure
shipbuilding
structure according
structures
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EP16173994.1A
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German (de)
French (fr)
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EP3255211A1 (en
Inventor
Harald Arndt
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Neptun Ship Design GmbH
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Neptun Ship Design GmbH
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Priority to DK16173994.1T priority Critical patent/DK3255211T3/en
Priority to EP16173994.1A priority patent/EP3255211B1/en
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    • 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
    • E02B17/021—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 with relative movement between supporting construction and platform
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/003—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for for transporting very large loads, e.g. offshore structure modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C5/00—Base supporting structures with legs
    • B66C5/10—Portals, i.e. essentially circular or square platforms with three or more legs specially adapted for supporting slewing jib cranes
    • 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
    • E02B2017/0073—Details of sea bottom engaging footing
    • E02B2017/0078—Suction piles, suction cans

Definitions

  • the invention relates to a jackup bridge structure, which is modular and used for research, salvage, service and / or installation ships.
  • Service and / or installation ships are used in very different areas.
  • installer ships for the construction and maintenance of offshore installations, especially on offshore wind energy plants, so-called installer ships in use, which allow a safe and technically necessary position on the.
  • An offshore wind farm usually consists of a large number of wind turbines, which are distributed over several square kilometers in a structured manner.
  • the plants typically consist of a tower, the generator nacelle and the wings.
  • the offshore wind energy plants stand on rammed pipes (monopiles) or on three / multi-legged lattice structure foundations. These lattice structures are "nailed" to the bottom of the lake or flooded in the bottom of the lake by suction anchors (suction bucket).
  • helicopters can set up with the help of hydraulic or electrically operated legs (so-called jack-up legs) at a fixed position in the sea. While driving, the legs are raised. At the intended position these are lowered and placed on the seabed. Then the ship is lifted out of the water.
  • the construction vessels are equipped with a large heavy-duty crane. In addition, accommodations for the crew and sometimes a helipad are provided.
  • pillar constructions are positioned going through the hull, which significantly limits the transverse distances of these legs and complicates the maintenance of the remaining below the waterline components (leg, feet, pumping systems) accordingly.
  • Another possibility is to arrange the legs laterally outside the ship's width, the drive units are laterally connected to the outer skin of the ship.
  • EP 2617641 A1 Movement apparatus for a wind turbine assembly and method for charging / discharging a wind turbine assembly therewith
  • EP 1356205 B1 Method and device for arranging at least one wind turbine on open water
  • DE 102013104278 A1 Floating work platform with a lifting system and method for raising or lowering such a buoyant work platform
  • US 6808337 B1 Marine structure
  • the lifting heights and load sizes to be realized force the positioning of a crane of these ships in the shortest possible distance to the wind energy plant. Unfavorable positioning of the crane necessitate a growing crane boom, which limits the lifting height of the crane and also increases the tipping moment. This makes it necessary to design the crane oversized for its task, which also has an impact on the ship's construction.
  • EP 2146006 A1 there is disclosed an open sea platform for lifting in which two floating units are connected together and a crane is placed on the connection.
  • a similar arrangement is off FR 2298474 A1 known.
  • WO 2014/070024 A2 a three-legged semi-diving service ship is disclosed, which with a crane and other structures for the Accommodation is equipped by persons. It has its own drives and can independently reach its application areas.
  • the publication NL 2004402 C discloses an offshore island equipped with pontoons for ballast water and four legs that can be moved out. A crane can optionally be mounted on the island. Likewise shows US 4156577 A a platform with three or four legs, which can be transported by a ship.
  • the object of the invention is to develop a jack-up bridge structure, which can be used independently of a watercraft, is suitable for retrofitting already built watercraft and / or can be used as a supporting component in the redesign of a jackup watercraft.
  • the jackup bridge structure should be modular, with the same modules allowing a variety of applications.
  • a jackup bridge structure consists of a shipbuilding-like structure, on which port and starboard side in each case a housing is arranged, which serves to receive downwardly extendable legs.
  • the shipbuilding-like structure which is designed as a shipbuilding structure, consists of several floors and is provided with facilities for guiding a ship and / or for housing machinery, equipment and / or personnel.
  • the pillar In the housing, the pillar is arranged with its leg mechanism and its necessary electric or hydraulic drive systems.
  • the jackup bridge structure is provided with a crane whose nacelle and propulsion units are located inside the shipbuilding-like structure, the shipbuilding-like structure serving as a crane foundation and machine area.
  • two shipbuilding-like structures are firmly connected to one another by means of at least one connecting structure.
  • the at least one connecting structure is arranged as a stabilizing element between the shipbuilding-like structures and serves to accommodate supply lines.
  • a walk-in connection between the two shipbuilding-like structures is created. If two connecting structures are arranged between the shipbuilding-like structures, these lie on the port side and starboard side.
  • the at least one connection structure is a floating dock.
  • the size and structural design of the jackup bridge structure is determined by its application. This is dimensioned so that the jackup bridge structure can be transported for example by means of a barge or a jack-up vessel.
  • the jackup bridge structure is fixedly connected to a watercraft, preferably via its main deck. This can also be done by retrofitting to an already built watercraft.
  • jackup bridge structure With the jackup bridge structure according to the invention watercraft can be equipped in addition to the self-sufficient application, which can be built independently of legs and their drive structure. Here are advantages in terms of the selection of possible yards and their Baudockbreiten. Similarly, a retrofit on an existing vessel is possible.
  • This flexible modular design of the jackup bridge structure opens up a broad field of application. The distance of the legs is depending on the intended use feasible without changing the internal structure of the vessel and the internal units.
  • Newbuild vessels can be designed and built without superstructure structures, whereby the modular jackup bridge structure (new or existing) can later be adapted and integrated. These steps can also be coordinated anywhere at different shipyard locations worldwide.
  • the jackup bridge structure enables new conceptual and logistic possibilities for the planning and execution of installation steps on offshore wind farm installations as well as their maintenance and dismantling.
  • Another advantage is that dynamically positioned watercraft take over the transport of components for offshore wind turbines to the site and thus to the jackup bridge structure. These watercraft can commute for material transport between manufacturer / port of loading and the construction site. In this way the crane is continuously available. This leads to a significant time and thus cost savings.
  • FIG. 1 shows in a first embodiment, the jackup bridge structure according to the invention.
  • the jackup bridge structure consists of several modular units.
  • the basic structure consists of a shipbuilding-like structure 2, which is composed of various structural steel units.
  • the shipbuilding-like structure 2 is basically conceptually similar to a shipbuilding structure, but statically and dynamically interpreted accordingly. It consists of several floors, which can serve, for example, both the accommodation of machinery and equipment, workshop space, personnel and the management of a watercraft depending on the application and needs.
  • the shipbuilding-like structure 2 is fixedly connected to two ports 1 and 2 on the starboard side, which constitute further modules.
  • In the housings 1 downwardly extendable legs 3 with a foundation support 31 (Spudcan) and their, not shown, pillar mechanisms, such as the leg drives, stored.
  • pillar mechanisms such as the leg drives
  • the housing 1 for the pillar mechanism and the legs 3 form the necessary electrical or hydraulic Drive systems a section unit and are firmly connected to the shipbuilding structure 2.
  • the equipment of this unit from shipbuilding similar structure 2 and housing 1 for the legs 3 depends on the size and the structural design of the possible application.
  • FIG. 1 shown embodiment as another module, a powerful crane 4 on the shipbuilding structure 2 arranged.
  • the shipbuilding-like structure 2 serves as a crane foundation, and receives in the interior the necessary supply facilities for the jack-up bridge structure and the drive units for the crane 4.
  • FIG. 2 shows a further embodiment with two Jackup bridge structures, wherein two Jackup bridge structures are firmly connected by connecting structures 5 together.
  • a first jackup bridge structure is equipped with a crane 4 and a second jackup bridge structure is designed as a living and working area for the crew.
  • two connecting structures 5 are provided which are connected to the shipbuilding-like structure 2 on the port and starboard side. But it is also conceivable that a correspondingly larger-sized and centrally placed connection structure 5 is sufficient.
  • the connection structures 5 not only connect the jack-up bridge structures from the outside, but also create a connection in the interior in which the personnel can escape from a jack-up bridge structure to the other, protected from weather influences.
  • connection structures 5 thus have a number of tasks, they connect the jack-up bridge structures with each other and at the same time serve as a stiffening of the entire construction. In addition, they are walkable and provide space for the supply lines between the jackup bridge structures.
  • the connecting structures 5 can also be designed as a further module as load-bearing structures in order to be able to transport this construction by means of a jack-up vessel.
  • the jackup bridge structure is modular, it can be modified for a wide variety of applications. So it is possible to "piggyback" a single jackup bridge structure by means of a barge to the desired location.
  • the legs 3 are extended and anchored in the bottom of the lake by means of the correspondingly large-dimensioned foundation supports 31 (Spudcans) driven into the seabed pipes (Piles).
  • the barge can then drive out and leave the location again.
  • the jackup bridge structure is autonomous and remains in place, for example, to carry out research or lift a wreck.
  • the staff can be flown in, for example, this is a helicopter platform provided.
  • jackup bridge structures are connected by a floating dock and towed to the site.
  • the floating dock can be flooded in the slightly raised, ballasted state on site. Feeders can swim in with the material, for example for an offshore wind turbine.
  • the legs 3 are now extended while the ballast tanks and the floating dock are steered. Subsequently, the brought along load of barges is installed.
  • FIG. 3 and 4 is sketched another application in which two separate Jackup bridge structures with a watercraft 6 are in communication.
  • a jackup bridge structure is implemented as a living space area and command bridge for the watercraft 6, and the other jackup bridge structure is connected to a crane 4.
  • the legs 3 port and starboard are guided on the watercraft 6 next to the outer skin of the ship down and positioned so that the legs 3 are guided laterally past the actual hull. This allows ships of any kind with appropriate strength-relevant modifications of the ship structures be removed or retrofitted.
  • the connection of the jack-up bridge structure with the vessel 6 is realized via the longitudinal / cross-bracings of the main deck, regardless of the outer skin concept of the vessel.
  • FIG. 4 shows a sketchy representation of the arrangement FIG. 3 in the raised state.
  • the type of drives (hydraulic or electric), as well as the type of leg construction (round tube, square / triangular steel plates, mesh grid system of pipe) are defined depending on the purpose of the Jackup bridge structure.
  • jackup bridge structure described in detail and its various applications are exemplary embodiments, they may be modified in a conventional manner to a wide extent by those skilled in the art without departing from the scope of the invention.
  • the concrete configurations of the structures may also follow in a different form than that described here.
  • the crane 4 or the housing 1 can be configured with the legs 3 in a different form, if this is necessary for reasons of space or designerischen reasons.
  • the use of the indefinite article "on" does not preclude that the features in question may also be duplicated.

Description

Die Erfindung befasst sich mit einer Jackup-BrĂĽckenstruktur, welche modular aufgebaut ist und fĂĽr Forschungs-, Bergungs-, Service- und/oder Installations-Schiffe zur Anwendung kommt.The invention relates to a jackup bridge structure, which is modular and used for research, salvage, service and / or installation ships.

Service- und/oder Installations-Schiffe werden in sehr unterschiedlichen Bereichen angewendet. Beispielsweise sind für die Errichtung und Wartung von Offshore-Anlagen, insbesondere an Offshore-Windenergie-Anlagen, sogenannte Errichterschiffe im Einsatz, welche eine sichere und technisch notwendige Position an der ermöglichen.Service and / or installation ships are used in very different areas. For example, for the construction and maintenance of offshore installations, especially on offshore wind energy plants, so-called installer ships in use, which allow a safe and technically necessary position on the.

Obwohl die Erfindung für viele mögliche Anwendungen, beispielsweise neben der Errichtung und Reparatur von Offshore-Windenergie-Anlagen auch für Öl- bzw. Gas-Plattformen, für Forschungsschiffe, für das Heben von Schiffswracks oder den Bau und die Reparatur von Pipelines, in Frage kommt, soll hier die Beschreibung anhand von Offshore-Windenergie-Anlagen erfolgen.Although the invention may be used in many possible applications, such as the construction and repair of offshore wind power plants, also for oil and gas platforms, research vessels, shipwreck lifting or pipelines construction and repair , the description shall be made here by means of offshore wind energy plants.

Ein Offshore Windpark besteht in der Regel aus einer Vielzahl von Windenergieanlagen, welche ĂĽber mehrere Quadratkilometer strukturiert verteilt sind.An offshore wind farm usually consists of a large number of wind turbines, which are distributed over several square kilometers in a structured manner.

Die Anlagen bestehen typischerweise aus einem Turm, der Generatorgondel und den FlĂĽgeln. Die Offshore-Windenergie-Anlagen stehen auf gerammten Rohren (Monopile)oder auf drei/mehrbeinigen Gitterstrukturfundamenten. Diese Gitterstrukturen werden mit dem Seeboden "vernagelt" oder per Saugverankerung (Suction Bucket) im Seeboden eingeschwemmt.The plants typically consist of a tower, the generator nacelle and the wings. The offshore wind energy plants stand on rammed pipes (monopiles) or on three / multi-legged lattice structure foundations. These lattice structures are "nailed" to the bottom of the lake or flooded in the bottom of the lake by suction anchors (suction bucket).

Für die Errichtung und Wartung von Offshore-Windparks werden spezielle Schiffe benötigt, welche über einen Schwerlastkran, Stellfläche für Komponenten von Windkraftanlagen sowie ausfahrbare Standbeine (Jackup-System) verfügen. Sogenannte Errichterschiffe, Hubschiffe (Jackup-Schiffe) oder auch geschleppte Hubinseln werden durch die Standbeine fest auf dem Meeresboden verankert, und bilden somit eine feste Arbeitsbasis.For the construction and maintenance of offshore wind farms, special ships are needed, which have a heavy-duty crane, space for components of wind turbines and extendable legs (jack-up system). So-called builder ships, jackships (jack-up ships) or towed jack-up islands are firmly anchored to the seabed by the legs, thus forming a solid work base.

Die bisher im Betrieb befindlichen Hubschiffe können sich mit Hilfe von hydraulischen oder elektrisch betriebenen Standbeinen (sogenannte Jackup-Legs) an einer festen Position im Meer aufstellen. Während der Fahrt sind die Beine angehoben. An der vorgesehenen Position werden diese abgesenkt und auf den Meeresboden gesetzt. Dann wird das Schiff aus dem Wasser gehoben. Die Errichterschiffe sind mit einem großen Schwerlastkran ausgestattet. Außerdem sind Unterkünfte für die Besatzung und mitunter auch ein Hubschrauberlandeplatz vorgesehen.The previously operating in operation helicopters can set up with the help of hydraulic or electrically operated legs (so-called jack-up legs) at a fixed position in the sea. While driving, the legs are raised. At the intended position these are lowered and placed on the seabed. Then the ship is lifted out of the water. The construction vessels are equipped with a large heavy-duty crane. In addition, accommodations for the crew and sometimes a helipad are provided.

Traditionell werden Standbein-Konstruktionen durch den Schiffskörper gehend positioniert, was die transversalen Abstände dieser Beine maßgeblich einschränkt und die Wartung der unterhalb der Wasserlinie verbleibenden Komponenten (Bein, Füße, Pumpsysteme) entsprechend erschwert. Eine weitere Möglichkeit besteht darin, die Standbeine seitlich außerhalb der Schiffsbreite anzuordnen, wobei deren Antriebseinheiten seitlich mit der Außenhaut des Schiffes verbunden sind.Traditionally, pillar constructions are positioned going through the hull, which significantly limits the transverse distances of these legs and complicates the maintenance of the remaining below the waterline components (leg, feet, pumping systems) accordingly. Another possibility is to arrange the legs laterally outside the ship's width, the drive units are laterally connected to the outer skin of the ship.

In den Veröffentlichungen EP 2617641 A1 (Bewegungsvorrichtung für eine Windturbinenanordnung und Verfahren zum Laden/Entladen einer Windturbinenanordnung damit), EP 1356205 B1 (Verfahren und Vorrichtung zur Anordnung mindestens einer Windturbine an offenem Wasser), DE 102013104278 A1 (Schwimmfähige Arbeitsplattform mit einem Hubsystem und Verfahren zum Heben bzw. Absenken einer derartigen schwimmfähigen Arbeitsplattform) und US 6808337 B1 (Meeresbauwerk) werden dazu verschiedene Konstruktionen offenbart. Diese Konstruktionen sind teilweise auch zur Nachrüstung oder den Umbau von Schiffen geeignet.In the publications EP 2617641 A1 (Movement apparatus for a wind turbine assembly and method for charging / discharging a wind turbine assembly therewith) EP 1356205 B1 (Method and device for arranging at least one wind turbine on open water), DE 102013104278 A1 (Floating work platform with a lifting system and method for raising or lowering such a buoyant work platform) and US 6808337 B1 (Marine structure) to different constructions are revealed. Some of these structures are also suitable for retrofitting or rebuilding ships.

Die zu realisierenden Hebehöhen und Lastgrößen zwingen die Positionierung eines Kranes dieser Schiffe in eine kürzest mögliche Entfernung zur Windenergieanlage. Ungünstige Positionierungen des Kranes bedingen einen größer werdenden Kranausleger, welcher die Hebehöhen des Kranes einschränkt und auch das Kippmoment erhöht. Dies macht es notwendig, den Kran überdimensioniert für seine Aufgabe auszulegen, was ebenfalls Auswirkungen auf die Schiffkonstruktion hat.The lifting heights and load sizes to be realized force the positioning of a crane of these ships in the shortest possible distance to the wind energy plant. Unfavorable positioning of the crane necessitate a growing crane boom, which limits the lifting height of the crane and also increases the tipping moment. This makes it necessary to design the crane oversized for its task, which also has an impact on the ship's construction.

In EP 2146006 A1 wird eine Plattform auf offenem Meer zum Anheben offenbart, bei der zwei schwimmende Einheiten miteinander verbunden werden und auf der Verbindung ein Kran angeordnet ist. Eine ähnliche Anordnung ist aus FR 2298474 A1 bekannt.In EP 2146006 A1 there is disclosed an open sea platform for lifting in which two floating units are connected together and a crane is placed on the connection. A similar arrangement is off FR 2298474 A1 known.

Die Veröffentlichung DE 202008012355 U1 beschreibt absenkbare Stützbeine, welche allerdings fest an einem definierten schwimmfähigen Schiffskörper angeordnet sind. In DE 102011118712 A1 wird ein Dockschiff offenbart, welches mit Jack-up-Beinen versehen ist. Das eigentliche Schiff kann in dieses Dockschiff einfahren und wird mit dem Dock angehoben.The publication DE 202008012355 U1 describes lowerable support legs, which, however, are fixedly arranged on a defined floatable hull. In DE 102011118712 A1 a dock ship is revealed, which is provided with jack-up legs. The actual ship can enter this dock ship and is lifted with the dock.

In US 3874180 A1 werden verschiedene Anordnungen von Jack-up-Beinen an Schiffen oder Verbindungen von einem Schiff zu Festmachern an den Öl-Plattformen oder Windenergieanlagen offenbart. Die Jack-up-Beine sind entweder fest mit dem Schiff verbunden oder es sind andere Vorrichtungen am Schiff vorhanden, die sich mit Festmachern verbinden. Das Schiff kann auf diese Art und Weise aus dem Wasser gehoben werden, um störungsfrei Arbeiten an der Öl-Plattforme oder der Windenergieanlage durchführen zu können.In US 3874180 A1 Various arrangements of jack-up legs on ships or connections from a ship to mooring on the oil platforms or wind turbines are disclosed. The jack-up legs are either firmly attached to the ship or there are other devices on the ship that connect with mooring. In this way, the ship can be lifted out of the water in order to be able to carry out work on the oil platforms or the wind energy plant without any problems.

In WO 2014/070024 A2 wird ein dreibeiniges halbtauchendes Service-Schiff offenbart, welches mit einem Kran und weiteren Aufbauten für die Unterbringung von Personen ausgerüstet ist. Es hat eigene Antriebe und kann seine Einsatzgebiete selbstständig erreichen.In WO 2014/070024 A2 a three-legged semi-diving service ship is disclosed, which with a crane and other structures for the Accommodation is equipped by persons. It has its own drives and can independently reach its application areas.

Die Veröffentlichung NL 2004402 C offenbart eine Offshore-Insel, welche mit Pontons für Ballastwasser und vier herausfahrbaren Beinen ausgestattet ist. Ein Kran kann wahlweise auf der Insel montiert sein. Ebenso zeigt US 4156577 A eine Plattform mit drei oder vier Standbeinen, welche durch ein Schiff transportiert werden kann.The publication NL 2004402 C discloses an offshore island equipped with pontoons for ballast water and four legs that can be moved out. A crane can optionally be mounted on the island. Likewise shows US 4156577 A a platform with three or four legs, which can be transported by a ship.

Darstellung der ErfindungPresentation of the invention

Aufgabe der Erfindung ist es, eine Jackup-Brückenstruktur zu entwickeln, welche unabhängig von einem Wasserfahrzeug eingesetzt werden kann, zur Nachrüstung bereits gebauter Wasserfahrzeuge geeignet ist und/oder als tragende Komponente bei der Neukonstruktion eines Jackup-Wasserfahrzeugs eingesetzt werden kann. Die Jackup-Brückenstruktur sollte modular aufgebaut sein, wobei durch gleiche Module eine Vielzahl von Anwendungen ermöglicht werden können.The object of the invention is to develop a jack-up bridge structure, which can be used independently of a watercraft, is suitable for retrofitting already built watercraft and / or can be used as a supporting component in the redesign of a jackup watercraft. The jackup bridge structure should be modular, with the same modules allowing a variety of applications.

Die erfindungsgemäße Lösung wird in den Ansprüchen offenbart.The solution according to the invention is disclosed in the claims.

Eine erfindungsgemäße Jackup-Brückenstruktur besteht aus einer schiffbauähnlichen Struktur, an welcher backbordseitig und steuerbordseitig jeweils ein Gehäuse angeordnet ist, welches der Aufnahme von nach unten ausfahrbaren Standbeinen dient. Die schiffbauähnliche Struktur, welche als schiffbauliche Aufbautenkonstruktion konzipiert ist, besteht aus mehreren Etagen und ist mit Einrichtungen zur Führung eines Schiffes und/oder zur Unterbringung von Maschinen, Anlagen und/oder Personal versehen.A jackup bridge structure according to the invention consists of a shipbuilding-like structure, on which port and starboard side in each case a housing is arranged, which serves to receive downwardly extendable legs. The shipbuilding-like structure, which is designed as a shipbuilding structure, consists of several floors and is provided with facilities for guiding a ship and / or for housing machinery, equipment and / or personnel.

In dem Gehäuse ist das Standbein mit seinem Standbein-Mechanismus und seinem notwendigen elektrischen oder hydraulischen Antriebsanlagen angeordnet.In the housing, the pillar is arranged with its leg mechanism and its necessary electric or hydraulic drive systems.

In einer weiteren Ausführungsform ist die Jackup-Brückenstruktur mit einem Kran versehen, dessen Maschinenhaus und Antriebseinheiten sich im Innern der schiffbauähnlichen Struktur befinden, wobei die schiffbauähnliche Struktur als Kranfundament und Maschinenbereich dient.In another embodiment, the jackup bridge structure is provided with a crane whose nacelle and propulsion units are located inside the shipbuilding-like structure, the shipbuilding-like structure serving as a crane foundation and machine area.

In einer weiteren Ausführungsform sind zwei schiffbauähnliche Strukturen mittels mindestens einer Verbindungsstruktur fest miteinander verbunden. Die mindestens eine Verbindungsstruktur ist als stabilisierendes Element zwischen den schiffbauähnlichen Strukturen angeordnet und dient der Unterbringung von Versorgungsleitungen. Außerdem wird eine begehbare Verbindung zwischen den zwei schiffbauähnlichen Strukturen geschaffen. Werden zwei Verbindungsstrukturen zwischen den schiffbauähnlichen Strukturen angeordnet, liegen diese backbord- und steuerbordseitig.In a further embodiment, two shipbuilding-like structures are firmly connected to one another by means of at least one connecting structure. The at least one connecting structure is arranged as a stabilizing element between the shipbuilding-like structures and serves to accommodate supply lines. In addition, a walk-in connection between the two shipbuilding-like structures is created. If two connecting structures are arranged between the shipbuilding-like structures, these lie on the port side and starboard side.

In einer weiteren AusfĂĽhrungsform ist die mindestens eine Verbindungsstruktur ein Schwimmdock.In a further embodiment, the at least one connection structure is a floating dock.

Die Größe und konstruktiven Auslegung der Jackup-Brückenstruktur ist durch ihre Anwendung bestimmt. Diese ist diese so dimensioniert, dass die Jackup-Brückenstruktur beispielsweise mittels einer Barge oder eines Hubschiffs transportiert werden kann.The size and structural design of the jackup bridge structure is determined by its application. This is dimensioned so that the jackup bridge structure can be transported for example by means of a barge or a jack-up vessel.

In einer weiteren AusfĂĽhrungsform ist die Jackup-BrĂĽckenstruktur fest mit einem Wasserfahrzeug, vorzugsweise ĂĽber dessen Hauptdeck, verbunden. Dies kann auch durch NachrĂĽstung an einem bereits gebauten Wasserfahrzeug erfolgen.In another embodiment, the jackup bridge structure is fixedly connected to a watercraft, preferably via its main deck. This can also be done by retrofitting to an already built watercraft.

Wesentliche Vorteile der erfindungsgemäßen Jackup-Brückenstruktur ergeben sich aus den vielfältigen Anwendungsmöglichkeiten. Vorhandene Wasserfahrzeuge können an diese "angehängt" werden und somit Beinabstände realisiert werden, welche ansonsten die Neukonstruktion und Bau eines Jackup-Wasserfahrzeuges mit notwendiger Breite bei innenliegenden Beinen notwendig machen würde.Significant advantages of the jackup bridge structure according to the invention result from the many possible applications. Existing vessels can be "attached" to this and thus leg distances can be realized, which would otherwise necessitate the redesign and construction of a jackup vessel with the necessary width for internal legs.

Mit der erfindungsgemäßen Jackup-Brückenstruktur können neben der autarken Anwendung Wasserfahrzeuge ausgerüstet werden, welche unabhängig von Standbeinen und deren Antriebskonstruktion gebaut werden können. Hier ergeben sich Vorteile bezüglich der Auswahl möglicher Werften und deren Baudockbreiten. Ebenso ist eine Nachrüstung auf einem vorhandenen Wasserfahrzeug möglich. Durch diese flexible modulare Gestaltung der Jackup-Brückenstruktur erschließt sich ein breites Anwendungsgebiet. Der Abstand der Standbeine ist je nach vorgesehenem Einsatz realisierbar ohne die innere Struktur des Wasserfahrzeuges sowie der internen Aggregate zu verändern.With the jackup bridge structure according to the invention watercraft can be equipped in addition to the self-sufficient application, which can be built independently of legs and their drive structure. Here are advantages in terms of the selection of possible yards and their Baudockbreiten. Similarly, a retrofit on an existing vessel is possible. This flexible modular design of the jackup bridge structure opens up a broad field of application. The distance of the legs is depending on the intended use feasible without changing the internal structure of the vessel and the internal units.

Neubau-Wasserfahrzeuge können ohne Aufbautenstrukturen konzipiert und gebaut werden, wobei die modulare Jackup-Brückenstruktur (neu oder vorhanden) später adaptiert und intergriert werden kann. Diese Schritte lassen sich auch ortsunabhängig an verschiedenen Werftstandorten weltweit koordinieren.Newbuild vessels can be designed and built without superstructure structures, whereby the modular jackup bridge structure (new or existing) can later be adapted and integrated. These steps can also be coordinated anywhere at different shipyard locations worldwide.

Bei Montage eines Wasserfahrzeuges unterhalb der Jackup-Brückenstruktur ist es realisierbar, dass die Beine und Fundament-Abstützung komplett aus dem Wasser gehoben werden können. Hierdurch ist eine optimale Begehung dieser Bereiche möglich, was die Wartung, Revison und eventuelle Repartur dieser Anlagenteile möglich macht.When mounting a vessel below the jackup bridge structure, it is possible to lift the legs and foundation support completely out of the water. This makes an optimal inspection of these areas possible, which makes the maintenance, revision and possible repair of these parts possible.

Die Jackup-Brückenstruktur ermöglich neue konzeptionelle und logistische Möglichkeiten für die Planung und Durchführung von Installationschritten an Offshore Windpark Anlagen als auch bei deren Wartung und Rückbau.The jackup bridge structure enables new conceptual and logistic possibilities for the planning and execution of installation steps on offshore wind farm installations as well as their maintenance and dismantling.

Ein weiterer Vorteil ist es, dass dynamisch positionierte Wasserfahrzeuge den Transport der Bauteile für Offshore-Windenergieanlagen zu dem Bauplatz vor Ort und damit zur Jackup-Brückenstruktur übernehmen. Diese Wasserfahrzeuge können für den Materialtransport zwischen Hersteller/Verladehafen und dem Baufeld pendeln. Auf diese Art ist der Kran ununterbrochen verfügbar. Das führt zu einer wesentlichen Zeit- und dadurch auch Kostenersparnis.Another advantage is that dynamically positioned watercraft take over the transport of components for offshore wind turbines to the site and thus to the jackup bridge structure. These watercraft can commute for material transport between manufacturer / port of loading and the construction site. In this way the crane is continuously available. This leads to a significant time and thus cost savings.

AusfĂĽhrung der ErfindungEmbodiment of the invention

Die Erfindung wird anhand von Zeichnungen näher erläutert. Hierzu zeigen

  • Figur 1 die erfindungsgemäße Jackup-BrĂĽckenstruktur in einem ersten AusfĂĽhrungsbeispiel
  • Figur 2 ein weiteres AusfĂĽhrungsbeispiel der erfindungsgemäßen Jackup-BrĂĽckenstruktur,
  • Figur 3 skizzenhafte Darstellung der erfindungsgemäßen Jackup-BrĂĽckenstruktur in Verbindung mit einem Wasserfahrzeug und
  • Figur 4 skizzenhafte Darstellung der erfindungsgemäßen Jackup-BrĂĽckenstruktur in Verbindung mit einem Wasserfahrzeug, welches angehoben ist.
The invention will be explained in more detail with reference to drawings. Show this
  • FIG. 1 the jackup bridge structure according to the invention in a first embodiment
  • FIG. 2 a further embodiment of the jackup bridge structure according to the invention,
  • FIG. 3 sketchy representation of the jackup bridge structure according to the invention in conjunction with a watercraft and
  • FIG. 4 sketchy representation of the jackup bridge structure according to the invention in conjunction with a watercraft, which is raised.

Figur 1 zeigt in einem ersten Ausführungsbeispiel die erfindungsgemäße Jackup-Brückenstruktur. Die Jackup-Brückenstruktur besteht aus mehreren, modularen Einheiten. Der Grundaufbau besteht aus eine schiffbauähnlichen Struktur 2, welche sich aus verschiedenen stahlbaulichen Einheiten zusammensetzt. Die schiffbauähnliche Struktur 2 ist grundsätzlich konzeptionell einer schiffbaulichen Aufbautenkonstruktion ähnlich, statisch und dynamisch betrachtet aber entsprechend auszulegen. Sie besteht aus mehreren Etagen, die je nach Anwendung und Bedarf beispielsweise sowohl der Unterbringung von Maschinen und Anlagen, Werkstatträumen, von Personal als auch der Führung eines Wasserfahrzeugs dienen können. Die schiffbauähnliche Struktur 2 ist mit zwei backbordseitig und steuerbordseitig angeordneten Gehäusen 1, welche weitere Module darstellen, fest verbunden. In den Gehäusen 1 sind nach unten ausfahrbare Standbeine 3 mit einer Fundament-Abstützung 31 (Spudcan) und ihren, hier nicht gezeigten, Standbein-Mechanismen, beispielsweise die Beinantriebe, gelagert. FIG. 1 shows in a first embodiment, the jackup bridge structure according to the invention. The jackup bridge structure consists of several modular units. The basic structure consists of a shipbuilding-like structure 2, which is composed of various structural steel units. The shipbuilding-like structure 2 is basically conceptually similar to a shipbuilding structure, but statically and dynamically interpreted accordingly. It consists of several floors, which can serve, for example, both the accommodation of machinery and equipment, workshop space, personnel and the management of a watercraft depending on the application and needs. The shipbuilding-like structure 2 is fixedly connected to two ports 1 and 2 on the starboard side, which constitute further modules. In the housings 1 downwardly extendable legs 3 with a foundation support 31 (Spudcan) and their, not shown, pillar mechanisms, such as the leg drives, stored.

Die Gehäuse 1 für den Standbein-Mechanismus und die Standbeine 3 bilden mit den notwendigen elektrischen oder hydraulischen Antriebsanlagen eine Sektionseinheit und sind mit der schiffbauähnlichen Struktur 2 fest verbunden. Die Ausstattung dieser Einheit aus schiffbauähnlicher Struktur 2 und Gehäuse 1 für die Standbeine 3 richtet sich in der Größe und der konstruktiven Auslegung nach der möglichen Anwendung.The housing 1 for the pillar mechanism and the legs 3 form the necessary electrical or hydraulic Drive systems a section unit and are firmly connected to the shipbuilding structure 2. The equipment of this unit from shipbuilding similar structure 2 and housing 1 for the legs 3 depends on the size and the structural design of the possible application.

Des Weiteren ist in dem nach Figur 1 gezeigten Ausführungsbeispiel als weiteres Modul ein leistungsfähiger Kran 4 auf der schiffbauähnlichen Struktur 2 angeordnet. In diesem Ausführungsbeispiel dient die schiffbauähnliche Struktur 2 als Kranfundament, und nimmt im Innern die notwendigen Versorgungsanlagen für die Jackup-Brückenstruktur sowie die Antriebseinheiten für den Kran 4 auf.Furthermore, in the after FIG. 1 shown embodiment as another module, a powerful crane 4 on the shipbuilding structure 2 arranged. In this embodiment, the shipbuilding-like structure 2 serves as a crane foundation, and receives in the interior the necessary supply facilities for the jack-up bridge structure and the drive units for the crane 4.

Figur 2 zeigt ein weiteres Ausführungsbeispiel mit zwei Jackup-Brückenstrukturen, wobei zwei Jackup-Brückenstrukturen durch Verbindungsstrukturen 5 miteinander fest verbunden sind. Eine erste Jackup-Brückenstruktur ist mit einem Kran 4 ausgestattet und eine zweite Jackup-Brückenstruktur ist als Wohn- und Arbeitsbereich für die Mannschaft ausgeführt. In der Regel sind zwei Verbindungsstrukturen 5 vorgesehen, welche backbord- und steuerbordseitig mit der schiffbauähnlichen Struktur 2 verbunden sind. Denkbar ist es aber auch, dass eine entsprechend größer dimensionierte und zentral platzierte Verbindungsstruktur 5 ausreichend ist. Die Verbindungsstrukturen 5 verbinden die Jackup-Brückenstrukturen nicht nur von außen, sondern schaffen auch im Innern eine Verbindung, in welcher das Personal geschützt vor Wettereinflüssen von einer Jackup-Brückenstruktur zur anderen gelangen kann. Die Verbindungsstrukturen 5 haben somit mehrere Aufgaben, sie verbinden die Jackup-Brückenstrukturen miteinander und dienen gleichzeitig als Versteifung der gesamten Konstruktion. Außerdem sind sie begehbar und bieten Raum für die Versorgungsleitungen zwischen den Jackup-Brückenstrukturen. Die Verbindungsstrukturen 5 können als weiteres Modul ebenfalls als tragende Strukturen ausgelegt sein, um diese Konstruktion mittels eines Hubschiffes transportieren zu können. FIG. 2 shows a further embodiment with two Jackup bridge structures, wherein two Jackup bridge structures are firmly connected by connecting structures 5 together. A first jackup bridge structure is equipped with a crane 4 and a second jackup bridge structure is designed as a living and working area for the crew. As a rule, two connecting structures 5 are provided which are connected to the shipbuilding-like structure 2 on the port and starboard side. But it is also conceivable that a correspondingly larger-sized and centrally placed connection structure 5 is sufficient. The connection structures 5 not only connect the jack-up bridge structures from the outside, but also create a connection in the interior in which the personnel can escape from a jack-up bridge structure to the other, protected from weather influences. The connection structures 5 thus have a number of tasks, they connect the jack-up bridge structures with each other and at the same time serve as a stiffening of the entire construction. In addition, they are walkable and provide space for the supply lines between the jackup bridge structures. The connecting structures 5 can also be designed as a further module as load-bearing structures in order to be able to transport this construction by means of a jack-up vessel.

Da die Jackup-Brückenstruktur modular aufgebaut ist, kann sie für die unterschiedlichsten Anwendungen modifiziert werden. So ist es möglich, eine einzelne Jackup-Brückenstruktur mittels einer Barge "huckepack" an den gewünschten Ort zu bringen. Die Standbeine 3 werden ausgefahren und im Seegrund mittels der entsprechend groß dimensionierter Fundament-Abstützungen 31 (Spudcans) durch in den Seegrund eingetriebene Rohre (Piles) verankert. Die Barge kann dann herausfahren und den Standort wieder verlassen. Die Jackup-Brückenstruktur ist autonom und verbleibt am Ort, beispielsweise um Forschungsarbeiten oder die Hebung eines Wracks durchzuführen. Das Personal kann beispielsweise eingeflogen werden, hierzu ist eine Hubschrauber-Plattform vorzusehen.Since the jackup bridge structure is modular, it can be modified for a wide variety of applications. So it is possible to "piggyback" a single jackup bridge structure by means of a barge to the desired location. The legs 3 are extended and anchored in the bottom of the lake by means of the correspondingly large-dimensioned foundation supports 31 (Spudcans) driven into the seabed pipes (Piles). The barge can then drive out and leave the location again. The jackup bridge structure is autonomous and remains in place, for example, to carry out research or lift a wreck. The staff can be flown in, for example, this is a helicopter platform provided.

Eine andere Möglichkeit besteht darin, dass zwei Jackup-Brückenstrukturen durch ein Schwimmdock miteinander verbunden sind und an den Standort geschleppt werden. Das Schwimmdock kann im leicht gehobenen, beballasteten Zustand vor Ort geflutet werden. Zubringerbargen können mit dem Material, beispielsweise für eine Offshore-Windenergieanlage, einschwimmen. Die Standbeine 3 werden nun weiter ausgefahren während die Ballasttanks und das Schwimmdock gelenzt werden. Anschließend wird die mitgebrachten Ladung der Bargen installiert.Another possibility is that two jackup bridge structures are connected by a floating dock and towed to the site. The floating dock can be flooded in the slightly raised, ballasted state on site. Feeders can swim in with the material, for example for an offshore wind turbine. The legs 3 are now extended while the ballast tanks and the floating dock are steered. Subsequently, the brought along load of barges is installed.

In den Figuren 3 und 4 wird eine weitere Anwendung skizzenhaft dargestellt, bei der zwei separate Jackup-Brückenstrukturen mit einem Wasserfahrzeug 6 in Verbindung stehen. In dem vorliegenden Ausführungsbeispiel ist eine Jackup-Brückenstruktur als Wohnraumbereich und Kommandobrücke für das Wasserfahrzeug 6 ausgeführt und die andere Jackup-Brückenstruktur ist mit einem Kran 4 verbunden. Die Standbeine 3 werden Backbord und Steuerbord am Wasserfahrzeug 6 neben der Schiffsaußenhaut nach unten geführt und positioniert, sodass die Standbeine 3 seitlich am eigentlichen Schiffskörper vorbeigeführt werden. Dadurch können Schiffe jeglicher Art mit entsprechenden festigkeitsrelevanten Modifikationen der Schiffsstrukturen aus- oder nachgerüstet werden. Die Verbindung der Jackup-Brückenstruktur mit dem Wasserfahrzeug 6 wird über die Längs-/ Querverbände des Hauptdecks realisiert, unabhängig der Außenhautkonzeption des Wasserfahrzeuges.In the Figures 3 and 4 is sketched another application in which two separate Jackup bridge structures with a watercraft 6 are in communication. In the present embodiment, a jackup bridge structure is implemented as a living space area and command bridge for the watercraft 6, and the other jackup bridge structure is connected to a crane 4. The legs 3 port and starboard are guided on the watercraft 6 next to the outer skin of the ship down and positioned so that the legs 3 are guided laterally past the actual hull. This allows ships of any kind with appropriate strength-relevant modifications of the ship structures be removed or retrofitted. The connection of the jack-up bridge structure with the vessel 6 is realized via the longitudinal / cross-bracings of the main deck, regardless of the outer skin concept of the vessel.

Figur 4 zeigt eine skizzenhafte Darstellung der Anordnung nach Figur 3 im angehobenen Zustand. FIG. 4 shows a sketchy representation of the arrangement FIG. 3 in the raised state.

Die Art der Antriebe (hydraulisch oder elektrisch), sowie die Art der Beinkonstruktion (Rund aus Rohr, Viereckig/Dreieckig aus Stahlplatten, Gittermastsystem aus Rohr) sind je nach Einsatzzweck der Jackup-BrĂĽckenstruktur zu definieren.The type of drives (hydraulic or electric), as well as the type of leg construction (round tube, square / triangular steel plates, mesh grid system of pipe) are defined depending on the purpose of the Jackup bridge structure.

Da es sich bei der vorhergehenden, detailliert beschriebenen Jackup-Brückenstruktur und deren unterschiedliche Anwendungen um Ausführungsbeispiele handelt, können sie in üblicher Weise vom Fachmann in einem weiten Umfang modifiziert werden, ohne den Bereich der Erfindung zu verlassen. Insbesondere können auch die konkreten Ausgestaltungen der Aufbauten in anderer Form als in der hier beschriebenen folgen. Ebenso kann der Kran 4 oder die Gehäuse 1 mit den Standbeinen 3 in einer anderen Form ausgestaltet werden, wenn dies aus Platzgründen bzw. designerischen Gründen notwendig ist. Weiter schließt die Verwendung der unbestimmten Artikel "ein" bzw. "eine" nicht aus, dass die betreffenden Merkmale auch mehrfach vorhanden sein können.Since the foregoing jackup bridge structure described in detail and its various applications are exemplary embodiments, they may be modified in a conventional manner to a wide extent by those skilled in the art without departing from the scope of the invention. In particular, the concrete configurations of the structures may also follow in a different form than that described here. Likewise, the crane 4 or the housing 1 can be configured with the legs 3 in a different form, if this is necessary for reasons of space or designerischen reasons. Further, the use of the indefinite article "on" does not preclude that the features in question may also be duplicated.

Bezugszeichenreference numeral

11
Gehäusecasing
22
schiffbauähnliche Strukturshipbuilding-like structure
33
ausfahrbare Standbeine
31 Fundament-AbstĂĽtzung (Spudcan)extendable legs
31 Foundation support (Spudcan)
44
Krancrane
55
Verbindungsstrukturconnecting structure
66
Wasserfahrzeugwater craft

Claims (12)

  1. Jack-up bridge structure with a housing (1) for accommodating downwardly extendable standing legs (3), characterized in that in each case such a housing (1) is fixedly connected port and starboard side to a modular shipbuilding-like structure (2) which is designed as a shipbuilding superstructure construction.
  2. Jack-up bridge structure according to Claim 1, characterized in that the shipbuilding-like structure (2) consists of a plurality of levels and is provided with means for guiding a watercraft and/or for accommodating machines, systems and/or personnel.
  3. Jack-up bridge structure according to Claim 1, characterized in that the standing leg (3), together with its standing leg mechanism and its necessary electrical or hydraulic drive systems, is arranged in the housing (1).
  4. Jack-up bridge structure according to Claim 1, characterized in that it is provided with a crane (4) whose machine house and drive units are situated within the shipbuilding-like structure (2), and in that the shipbuilding-like structure (2) is designed as a crane foundation and machine region.
  5. Jack-up bridge structure according to at least one of the preceding claims, characterized in that two shipbuilding-like structures (2) are fixedly connected to one another by means of at least one connecting structure (5).
  6. Jack-up bridge structure according to Claim 5, characterized in that the at least one connecting structure (5) is arranged as a stabilizing element between the shipbuilding-like structures (2) and serves to accommodate supply lines, and provides a walk-on connection between the shipbuilding-like structures (2) .
  7. Jack-up bridge structure according to Claim 5 or 6, characterized in that two connecting structures (5) are connected port and starboard side to the shipbuilding-like structure (2).
  8. Jack-up bridge structure according to Claim 5, characterized in that the at least one connecting structure (5) is a floating dock.
  9. Jack-up bridge structure according to at least one of the preceding claims, characterized in that the size and structural design of the jack-up bridge structure are determined by its application.
  10. Jack-up bridge structure according to Claim 9, characterized in that it is dimensioned such that the jack-up bridge structure can be transported by means of a barge or a lifting ship.
  11. Jack-up bridge structure according to at least one of the preceding Claims 1 to 9, characterized in that it is fixedly connected to a watercraft (6).
  12. Jack-up bridge structure according to Claim 11, characterized in that it is retrofitted to a watercraft (6) .
EP16173994.1A 2016-06-10 2016-06-10 Jack-up bridge structure Active EP3255211B1 (en)

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DK16173994.1T DK3255211T3 (en) 2016-06-10 2016-06-10 Jack-bridge structure
EP16173994.1A EP3255211B1 (en) 2016-06-10 2016-06-10 Jack-up bridge structure

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Application Number Priority Date Filing Date Title
EP16173994.1A EP3255211B1 (en) 2016-06-10 2016-06-10 Jack-up bridge structure

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EP3255211B1 true EP3255211B1 (en) 2018-10-31

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Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874180A (en) * 1971-01-18 1975-04-01 Maurice N Sumner Modular offshore structure system
FR2298474A1 (en) 1975-01-27 1976-08-20 Wieczorek Julien Catamaran type multi-derrick installations - for multiple marine boreholes in depths up to 300 metres
US4156577A (en) * 1977-04-15 1979-05-29 Mcmakin Robert G Onshore/offshore method and apparatus for drilling
WO2001023252A1 (en) 1999-09-28 2001-04-05 A2Sea A/S Vessel
NL1016859C2 (en) 2000-12-13 2002-06-14 Marine Construct B V Method and device for placing at least one windmill on open water.
EP2146006A1 (en) 2008-07-18 2010-01-20 Geosea NV Jack-up offshore platform
DE202008012355U1 (en) * 2008-09-17 2008-12-11 Wärtsilä Ship Design Germany GmbH Lifting system
NL2004402C2 (en) * 2010-03-16 2011-09-20 Mammoet Europ B V Semisubmersible and method of its operation.
WO2012036352A1 (en) 2010-09-14 2012-03-22 대우조선해양 주식회사 Wind turbine assembly moving device and method for loading/unloading wind turbine assembly using same
DK201001043A (en) * 2010-11-18 2012-05-19 Chartering & Marine Consultants As Vessel for transport and handling means offshore, method and uses hereof
WO2014070024A2 (en) * 2012-11-05 2014-05-08 North C As A transportation and installation system and method
DE102013104278B4 (en) 2013-04-26 2018-05-09 BITEK Bergungsdienst GmbH Floating work platform with a lifting system and method for performing underwater work

Non-Patent Citations (1)

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DK3255211T3 (en) 2019-02-25

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