EP3597829B1 - Renfort de fondations pour ouvrages en mer - Google Patents

Renfort de fondations pour ouvrages en mer Download PDF

Info

Publication number
EP3597829B1
EP3597829B1 EP19165504.2A EP19165504A EP3597829B1 EP 3597829 B1 EP3597829 B1 EP 3597829B1 EP 19165504 A EP19165504 A EP 19165504A EP 3597829 B1 EP3597829 B1 EP 3597829B1
Authority
EP
European Patent Office
Prior art keywords
foundation
reinforcement
support element
existing
offshore structure
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
EP19165504.2A
Other languages
German (de)
English (en)
Other versions
EP3597829A1 (fr
Inventor
Daniel Bartminn
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.)
RWE Renewables Europe and Australia GmbH
Original Assignee
RWE Renewables 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 RWE Renewables GmbH filed Critical RWE Renewables GmbH
Publication of EP3597829A1 publication Critical patent/EP3597829A1/fr
Application granted granted Critical
Publication of EP3597829B1 publication Critical patent/EP3597829B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/52—Submerged foundations, i.e. submerged in open water
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D37/00—Repair of damaged foundations or foundation structures

Definitions

  • the invention relates to a foundation reinforcement for an offshore structure.
  • Foundations or foundation structures for offshore structures or offshore structures especially for offshore wind turbines or topsides (e.g. built-on dwellings for electrical systems, substations, platforms, to name just a few examples) sometimes require increasing load requirements during operation which must then be borne by the corresponding foundation.
  • an oil drilling platform as an offshore structure should produce more oil during operation, or should offer increased security against weather conditions or the like.
  • the load requirement can increase during operation, if z. B. a larger turbine, or larger rotor blades should be included in the wind turbine. Then it is necessary that the existing foundation of the offshore structure can also bear these increased load requirements.
  • a foundation for an offshore platform is known, with support elements forming part of the foundation.
  • the support elements are firmly connected on the underside with barrel-like elements and on the upper side with a plane.
  • the support elements are also connected by means of connecting elements to an inner ring, which is also formed from barrel-shaped components.
  • a foundation system for the foundation of an offshore structure comprising a monopile with an anchoring section which can be anchored in the seabed and a connecting section arranged at the opposite end is known.
  • a platform structure can be connected directly or indirectly via a transition piece to the connecting section of the monopile.
  • the foundation system also has stabilizing devices in the form of support feet, which are connected to the platform structure and to the seabed.
  • the GB 2481906 A deals with the task of simplifying the installation of foundations in the seabed.
  • a temporary scaffolding for installing supports or pillars underwater is disclosed.
  • the frame has a plurality of support legs, the support legs comprising vertically adjustable foot parts. Struts can be placed between the support legs to reinforce them.
  • the support legs can be used as a template to drill holes for pillars, for example a jacket foundation.
  • a foundation for an offshore platform is known that can be assembled entirely locally from modular parts.
  • the modular foundation has a foundation device, a platform, anchoring arms and pre-tensioned cables.
  • the anchoring arms are connected by means of diagonal struts to a centrally arranged, vertical support pillar.
  • the anchoring arms are also connected to a tensioning device arranged below the platform by means of the pre-tensioned cables.
  • the US 2011/0135400 A1 discloses a foundation for an offshore platform in which additional support of a vertical main pillar is achieved via struts.
  • the struts are arranged between the main pillar and supporting pillars.
  • the foundation is also known as a jacket foundation.
  • the objective task is to at least partially reduce or avoid the problems described, i.e. in particular to provide a cost-effective way of adapting an existing foundation of an offshore structure to increasing load requirements during operation to be able to.
  • seabed in the context of the invention encompasses both a seabed of a sea (e.g. ocean) and a seabed of a lake.
  • the invention is based on the knowledge that bearing reserves of anchors (e.g. foundation piles) in the seabed of existing foundations can be mobilized. Furthermore, it is possible to keep the load increase in (the structure) of the existing foundation (e.g. jacket foundation) caused by the increased load requirement of the offshore structure. Furthermore, the necessary changes and adjustments to the existing foundation or its structures (structural elements) are kept low by means of the foundation reinforcement according to the invention.
  • anchors e.g. foundation piles
  • the loads or increased loads of the offshore structure are diverted via the foundation reinforcement in question into at least one mainly vertically oriented support element, which is fixed with its lower end near the seabed or near the seabed.
  • the lower end of the at least one support element is, for example, non-positive, e.g. B. fixed with one or more anchors (e.g. foundation piles) of the existing foundation by being connected to them (e.g. screwed and / or grouted).
  • the element of the offshore structure is, for example, a pile element which has at least one vertical connection to a useful structure or topside of the offshore structure.
  • the element of the offshore structure is, for example, a fastening point of the offshore structure, preferably a fastening point on an underside (i.e. in particular a side facing the seabed) of the offshore structure.
  • An offshore structure is, for example, a wind turbine installed offshore. Furthermore, an offshore structure is, for example, a transformer station, or a drilling or production platform. An offshore structure is, for example, a structure founded in the sea floor that has or includes a topside.
  • a topside of an offshore structure in particular denotes that part of an offshore structure which is arranged above sea level and comprises functional elements of the offshore structure.
  • this can be, for example, the nacelle comprising a turbine and rotor blades, the nacelle being founded, for example, via a tower by means of the existing foundation in the seabed.
  • Topides of the offshore structure can also be, for example, dwellings for electrical systems, substations, oil and / or gas production and processing systems, measuring and radio stations, residential platforms, loading stations, flares or the like, to name just a few non-limiting examples .
  • the at least one support element is, for example, a pipe.
  • the lower end of the support element is fixed so that a force can be diverted or diverted.
  • the lower end of the support element is fixed in such a way that the force is diverted or diverted into the sea floor.
  • the at least one cantilever element is, for example, a horizontal support.
  • the at least one cantilever element is ideally connected to all existing elements (e.g. pile elements) that support the offshore structure.
  • the objective reinforcement of the foundation allows increasing loads on the offshore structure to be borne by the existing foundation during ongoing operation.
  • anchors e.g. one or more foundation piles
  • growth effects which the present invention makes use of.
  • This is an increase in the resistance of the anchoring (e.g. foundation pile) of the existing foundation in the seabed.
  • B. result from rearrangements and settlement effects and the reduction of pore water pressures.
  • These growth effects can increase the maximum load of the anchorages of the existing foundations by 20% to 60% and more. This opens up the possibility of subsequently significantly increasing the stability of offshore foundations for loads that act on these offshore foundations by means of the foundation reinforcement in question, without the existing anchoring (e.g. one or more foundation piles) having to be renewed.
  • the existing foundation engages with at least one second anchoring section of an anchorage that can be anchored in the sea floor.
  • the existing foundation includes, for example, one or more anchors, e.g. B. Foundation piles anchored in the seabed.
  • the one or more anchors e.g. foundation piles
  • the one or more anchors are anchored in the sea floor, for example, in such a way that the second anchoring section, which is comprised by the anchoring of the existing foundation, engages in the sea floor.
  • This can be made possible, for example, in that the one or more anchorages are at least partially vibrated into the sea floor, so that the respective second anchoring section of the one or more anchors engages in the seabed.
  • the existing foundation is a jacket foundation.
  • Certain offshore structures in particular wind turbines, are regularly attached to the sea floor with a jacket foundation.
  • Such a jacket foundation has, for example, a square base, which are connected to one another with a pyramid-shaped framework construction made of lattice structures (e.g. steel tubes), the pyramid-shaped construction extending vertically upwards.
  • An upper end of the lattice structure is designed, for example, to receive the element (e.g. pile element) from the offshore structure.
  • the lower end of the jacket foundation itself is anchored in the sea floor, for example by means of at least one anchorage (e.g. foundation pile).
  • the existing jacket foundation is anchored, for example, with a pre-pile anchoring in the sea floor, with one or more anchoring elements or anchors (e.g. pile elements) of the jacket foundation being anchored in the sea floor so that the jacket foundation can be anchored in the sea floor is.
  • This is realized, for example, in which the lattice structure (s) of the jacket foundation, e.g. B. by means of a grouting, in which or the anchor (s) is fixed.
  • the existing jacket foundation is, for example, a post-pile anchoring, whereby with the post-pile anchoring the arrangement of the foundation reinforcement in question is sometimes easier than with a pre-pile anchoring.
  • the lower end of the at least one support element of the foundation reinforcement is arranged (e.g. inserted) into at least one free upper end of at least one foundation piles comprised by the respective post-pile anchors, and in particular then positively connected to the respective post-pile anchorage (e.g. fixed), e.g. B. by means of a grouting.
  • the support element and the cantilever element can be connected to one another in a non-positive manner.
  • the upper end of the at least one support element and one end of the at least one cantilever element can, for example, be firmly connected to one another (for example screwable or weldable).
  • a direction of longitudinal extension of the at least one support element and a direction of longitudinal extension of the at least one cantilever element have, for example, an angle of approximately 90 ° in the present case.
  • the longitudinal direction of the at least one support element in the state reinforcing the existing foundation is essentially vertical
  • the longitudinal direction of the at least one cantilever element in the state reinforcing the existing foundation is at least partially horizontal.
  • the support element can be positively connected to a foundation pile of the existing foundation.
  • the foundation pile is, for example, the anchorage that has the second anchorage section of the existing foundation.
  • the existing foundation has, for example, more than one such foundation pile, e.g. B. two, three, four, or more such foundation piles.
  • Such a foundation pile has, for example, at least one receptacle for receiving the lower end of the at least one support element.
  • the lower end of the at least one support element can for example, intervene in the receptacle (z. B. be plugged in), and then be routed.
  • the receptacle is designed accordingly, for example, as a hollow cylinder, so that the lower end of the at least one support element can engage in this hollow cylindrical receptacle.
  • the lower end of the support element engages the seabed with a force fit.
  • the lower end of the at least one support element can be fixed, for example (directly) in the seabed.
  • a non-positive fixation in the seabed can be achieved, for example, by regrinding the lower end of the at least one support element (for example a section of the at least one support element).
  • a non-positive fixation in the sea floor can be implemented, for example, by vibrating at least part of the lower end of the at least one support element into the sea floor.
  • the at least one support element is, for example, rotated with respect to one or more anchoring sections or anchors (e.g. one or more foundation piles) of the existing foundation, so that the lower end of the at least one support element is anchored directly in the seabed, and yet the at least one support element is essentially vertically aligned per se.
  • anchoring sections or anchors e.g. one or more foundation piles
  • This described twisting of the at least one support element is particularly preferred with an existing jacket foundation that is designed as a pre-pile anchorage, as this enables easier assembly of the foundation reinforcement in question even with such a pre-pile anchorage of the existing foundation.
  • the lower end of the at least one support element is arranged, for example in the state reinforcing the existing foundation, essentially centrally between two anchors (e.g. foundation piles) of the existing jacket foundation (e.g. pre-pile anchors).
  • anchors e.g. foundation piles
  • pre-pile anchors e.g. pre-pile anchors
  • the support element is connected to a buoyancy body in a non-positive manner.
  • Such a buoyancy body in the sense of the present subject-matter has the effect that, with the foundation in question, extreme misalignments can be avoided or compensated for in the short and long term by causing a restoring force that counteracts the misalignment.
  • such a buoyancy body can have an essentially conical or curved geometry.
  • Such a buoyancy body can, for example, be used in addition to a foundation and support the holding of the offshore structure founded with the foundation.
  • the buoyancy caused by the (for example at least one) buoyancy body can result in a lower natural frequency of the offshore structure, as a result of which the natural frequency can be limited. This is due in particular to a semi-floating foundation of the offshore structure, which includes at least one buoyancy body.
  • the at least one buoyancy body is arranged below the surface of the water and / or at least encircles the element of the offshore structure in a horizontal plane.
  • the at least one buoyancy body in the upright state of the element of the offshore structure, can be arranged resting on the waterline. Furthermore, the at least one buoyancy body can be arranged, for example, on at least one arm extending from the outer wall of the element of the offshore structure.
  • the support element and the cantilever element together form an outrigger construction, which is arranged on the outside of the existing foundation in the state that reinforces the existing foundation, so that the existing foundation is stiffened at least one connection, preferably two connections, e.g. B. is formed rigidly between the vertically extending and the horizontally extending element and the existing structure and horizontal element.
  • a reinforcement, for example, of the elements (e.g. pyramid-shaped lattice structures) of the jacket foundation is made possible by this outrigger construction.
  • the phrase "in the state reinforcing the existing foundation" in the sense of the present invention represents in particular that state in which the foundation reinforcement according to the invention is completely mounted on the existing foundation, i.e. the at least one cantilever element with at least one (supporting) element of the offshore Connected structure and the lower end of the at least one support element is fixed.
  • At least two support elements and at least two cantilever elements can be arranged on the existing foundation.
  • At least two, preferably three, four or five support elements can consequently be arranged on the outside of the existing foundation.
  • at least two, in particular three, four or five cantilever elements are each connected to the element of the offshore structure and the respective support element. All support elements and cantilever elements then reinforce this existing foundation in the state that reinforces the existing foundation.
  • the at least two support elements and the at least two cantilever elements can be arranged, for example, in a modular manner on the existing jacket foundation, so that the existing foundation can be successively expanded by one or more additional support elements and cantilever elements according to the invention, so that the existing foundation can be reinforced step by step. Furthermore, in the event that at least two support elements and at least two cantilever elements are arranged on the existing foundation, these are arranged, for example, evenly distributed on the outside of the existing foundation.
  • the at least one support element can be filled with a filling material to increase its own weight.
  • the at least one support element is, for example, at least partially hollow or hollow-cylindrical.
  • the at least one support element is a (hollow) tube.
  • the filling material is, for example, a cement suspension.
  • the filling material is pressed or cast into the at least one support element, for example
  • the element of the offshore structure comprises a flange connection, wherein the cantilever element can be connected to the flange connection in a force-locking manner.
  • the at least one cantilever element can be arranged (for example screwed) on the flange connection, for example.
  • the element of the offshore structure is a pile element
  • this is arranged, for example, on the flange connection.
  • the cantilever element can, for example, also be arranged on the flange connection (for example screwed on).
  • the cantilever element of the foundation reinforcement in the sense of the present subject matter is also, for example, positively connected to the element of the offshore structure held by the first anchoring section of the existing foundation.
  • the objective reinforcement of the foundation includes other configurations of the connections which, for. B. but not exclusively made by welding, screwing, gluing, riveting, jamming (also referred to as swaging), and / or are made by friction connections.
  • the foundation reinforcement can, for example, allow the offshore structure to move widely.
  • the at least one cantilever element can for example be connected to the element of the offshore structure in such a way that it extends in a substantially vertical direction along the element (e.g. a pile element (e.g. tower in the case of an offshore wind turbine)) of the offshore structure can slide in the longitudinal direction of the element from the offshore structure.
  • a pile element e.g. tower in the case of an offshore wind turbine
  • the at least one support element is designed telescopically so that its length can be changed and it is under tension in a state that reinforces the existing foundation.
  • the respective upper ends of the at least two support elements are connected to one another by means of at least one support element.
  • the foundation reinforcement causes an increase in the natural frequency of the offshore structure in a state that reinforces the existing foundation, so that a reduction in the natural frequency of the offshore structure caused by additional loads can be compensated for.
  • the offshore structure is a wind power plant that includes a power generation plant, e.g. B. comprises a turbine and a rotating component (z. B. rotor blade).
  • a power generation plant e.g. B. comprises a turbine and a rotating component (z. B. rotor blade).
  • the objective object is also achieved by a foundation, including an objective reinforcement of the foundation.
  • the object of the invention is also achieved by an offshore structure, comprising a concrete foundation reinforcement.
  • Fig. 1 shows a schematic representation of a jacket foundation 2 for an offshore structure 3 comprising an objective foundation reinforcement 1.
  • a first variant of a concrete foundation reinforcement 1 is shown.
  • the offshore structure 3 is, for example, a wind turbine (in Fig. 1 not shown), the element 7 of the offshore structure 3 being, for example, the tower of the wind turbine.
  • the offshore structure 3 is here established with a jacket foundation 2 as an existing foundation.
  • the jacket foundation 2 has an anchoring section 6, which in the present case is a flange connection. It can be seen that the element 7 of the offshore structure 3 is held in the center of the flange connection in the present case.
  • the element 7 of the offshore structure 3 is held, for example, in the anchoring section 6 of the existing jacket foundation 2, in which the element 7 of the offshore structure 3 is routed in the existing jacket foundation 2.
  • the jacket foundation 2 in the present case has four anchors 8 which are arranged at corner points of a rectangular basic shape of the jacket foundation 2.
  • Each of these four anchorages 8 is designed as a foundation pile 8 in the present case.
  • Each of these foundation piles 8 has at its lower end an anchoring section 8a, by means of which the respective foundation pile 8 can engage in the seabed, so that it is then anchored.
  • Fig. 1 In the present case, two objective foundation reinforcements 1 are already arranged on the existing jacket foundation 2, two more objective ones However, foundation reinforcements 1 are not yet. These latter are in Fig. 1 to the left of the existing foundation 2, slightly offset upwards and shown at a distance from the existing foundation 2.
  • Another such support element 9 is already on the upper end 4b of the support element shown on the left, which according to FIG Fig. 1 is not yet arranged on the existing jacket foundation.
  • Fig. 2 shows the schematic jacket foundation 2 for an offshore structure Fig. 1 when fully reinforcing the jacket foundation 2.
  • Fig. 2 only one of the four represented foundation reinforcements 1 is provided with detailed reference numerals (in Fig. 2 the foundation reinforcement 1) shown on the right by the observer.
  • the respective lower ends 4a of the support elements 4 are each fixed in one of the four receptacles 8b comprised by the foundation piles 8.
  • the respective lower end 4a of the support elements 4 was inserted into the hollow-cylindrical receptacle 8b of the respective foundation pile 8, and then grounded in this.
  • the existing jacket foundation is 2 of the Fig. 2 reinforced with four concrete foundation reinforcements 1, with their respective cantilever elements 5 each with element 7 of an offshore structure 3 (in Fig. 2 not shown in full) are positively connected. Furthermore, the respective upper ends 4b of the support elements 4 are each connected to the upper ends 4b of their respective adjacent support elements 4 with a support element 9. An upper end 4b of a support element 4 consequently has a connection to two support elements 9.
  • FIG. 2 the sea floor M is shown schematically, so that it is made clear that an anchoring section 8 a of a respective foundation pile 8 of the existing foundation 2 engages with this anchoring section 8 a in the sea floor M.
  • Fig. 3 shows a schematic representation of an offshore structure 3 comprising a second and a third variant of a concrete foundation reinforcement 1.
  • the offshore structure 3 in Fig. 3 is present a platform, z. B. a working platform of a conveyor system.
  • This platform was founded with the existing foundation 2.
  • the existing foundation 2 is a jacket foundation 2, the lattice structures of which extend above sea level so that the platform is not in the sea.
  • the second variant of a concrete foundation reinforcement 1 is in Fig. 3 shown on the left.
  • the third variant of a concrete foundation reinforcement 1 is in Fig. 3 shown on the right.
  • the second variant of the foundation reinforcement comprises at least one essentially vertical support element 4 with an upper end 4b and a lower end 4a, the lower end 4a being fixed in the receptacle 8b of the foundation pile 8.
  • Another support element of the same type is shown in Fig. 3 not to be seen for perspective reasons, since it is covered by the "front" support element.
  • the length of the support element 4 is predefined, ie in particular it cannot be lengthened or shortened.
  • the support element 4 is also connected at its upper end 4b to a cantilever element 5.
  • the upper end 4b of the support element 4 of the second variant extends to an element 7 held by the existing foundation 2, in this case the platform of the offshore structure 3 other part also extends in the vertical direction.
  • a cantilever element 5 of the foundation reinforcement in question which extends at least partially in the horizontal direction, can correspondingly also extend at least partially in the vertical direction.
  • the longitudinal extension direction of the support element 4 in the sense of the invention has only a slight deviation of a maximum of 10 to 15 degrees from a completely vertical axis.
  • Other configurations include one or more inclined outrigger elements that either rise or descend from the existing structure and are connected to the element that largely leads vertically downwards. This also includes elements that are curved or that deviate from the vertical by more than 15 degrees.
  • the cantilever element 5 is permanently connected to the offshore structure 3 at two anchoring sections with the element 7 (platform).
  • the support element 4 and the cantilever element 5 are arranged on the existing foundation 2 in such a way that a force acting on the element 7 (platform of the offshore structure 3) at least partially via the cantilever element 5 on the support element 4 and / or directly on the support element is transferable, so that a relief of the existing foundation 2 by means of the foundation reinforcement 1 can be achieved.
  • the support element 4 of the third variant is designed telescopic, so that it can be changed in length. This particularly facilitates the assembly of the support element 4, since, for example, an erection of the support element, so that its longitudinal direction is arranged to run essentially vertically, can sometimes be difficult, since a non-telescopic support element 4 of the second variant sometimes jams between the receptacle 8b of the foundation pile 8 and the element 7 (in this case the platform) of the offshore structure 3 can be before it is arranged in the existing jacket foundation 2 reinforcing state. This is avoided by means of the telescopic support element 4.
  • the telescopic support element 4 of the third variant is arranged in the state reinforcing the existing jacket foundation 2, it is pretensioned in such a way that the existing foundation 2 can be relieved by means of the foundation reinforcement 1 in question.
  • Fig. 4 shows a schematic representation of an offshore structure 3 comprising a fourth variant of a concrete foundation reinforcement 1.
  • the offshore structure 3 in Fig. 4 is present a platform, z. B. a working platform of a conveyor system.
  • This platform was founded with the existing foundation 2.
  • the existing foundation 2 is a jacket foundation 2, the lattice structures of which extend above sea level so that the platform is not in the sea.
  • the second and third variant of the concrete foundation reinforcements 1 shown in FIG Fig. 4 each have support elements 4, which are designed as tension elements.
  • the respective support elements 4 are fixed with their respective upper ends 4b on the element 7, in the present case at a fastening point of the offshore structure 3 (e.g. on the underside of the offshore structure, in this case on the underside of the platform).
  • the respective support elements 4 are fixed with their lower ends 4a in receptacles 8b of the foundation piles 8 of the existing foundation 2, for. B. by means of a grouting.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Mechanical Engineering (AREA)
  • Foundations (AREA)
  • Wind Motors (AREA)

Claims (13)

  1. Renfort de fondation (1) pour une structure offshore (3), comprenant :
    - au moins un élément de support (4) s'étendant de manière sensiblement verticale ayant une extrémité supérieure (4b) et une extrémité inférieure (4a), l'extrémité inférieure (4a) étant fixée ;
    - au moins un élément en porte-à-faux (5) s'étendant au moins partiellement horizontalement depuis l'extrémité supérieure (4b) de l'élément de support (4) jusqu'à un élément (7) de la structure offshore (3) supporté par une première section d'ancrage (6) d'une fondation existante (2) ;
    - où l'élément de support (4) et l'élément en porte-à-faux (5) peuvent être disposés sur la fondation existante (2) de telle sorte qu'une force agissant sur l'élément (7) peut être transmise à l'élément de support (4) au moins partiellement par l'intermédiaire de l'élément en porte-à-faux (5) et/ou à l'élément de support (4), de sorte qu'un délestage de la fondation existante (2) peut être réalisé,
    - où la fondation existante (2) est une fondation jacket ;
    - où au moins deux éléments de support (4) et au moins deux éléments en porte-à-faux (5) peuvent être disposés sur la fondation existante (2) ; et
    - où les extrémités supérieures respectives (4b) des au moins deux éléments de support (4) sont reliées les unes aux autres au moyen d'au moins un élément de soutien (9).
  2. Renfort de fondation (1) selon la revendication 1, caractérisé en ce que la fondation existante (2) s'engage dans le fond marin (M) avec au moins une deuxième section d'ancrage (8a) ancrable dans le fond marin (M) à partir d'un ancrage (8).
  3. Renfort de fondation (1) selon l'une des revendications précédentes,
    caractérisé en ce que l'élément de support (4) et l'élément en porte-à-faux (5) peuvent être reliés entre eux par liaison de force.
  4. Renfort de fondation (1) selon l'une des revendications précédentes,
    caractérisé en ce que l'élément de support (4) peut être relié par liaison de force à un pieu de fondation (8) de la fondation existante (2).
  5. Renfort de fondation (1) selon l'une des revendications 1 à 4, caractérisé en ce que l'extrémité inférieure (4a) de l'élément de support (4) s'engage par liaison de force dans le fond marin (M).
  6. Renfort de fondation (1) selon l'une des revendications 1 à 4, caractérisé en ce que l'élément de support (4) est relié par liaison de force à un corps de flottaison.
  7. Renfort de fondation (1) selon l'une des revendications précédentes, caractérisé en ce que l'élément de support (4) et l'élément en porte-à-faux (5) forment ensemble une construction en porte-à-faux qui, à l'état de renforcement de la fondation existante (2), est disposée à l'extérieur de celle-ci de sorte que la fondation existante (2) est rigidifiée.
  8. Renfort de fondation (1) selon l'une des revendications précédentes, caractérisé en ce que l'au moins un élément de support (4) peut être rempli d'un matériau de remplissage pour augmenter son propre poids.
  9. Renfort de fondation (1) selon l'une des revendications précédentes,
    caractérisé en ce que l'élément (7) de la structure offshore (3) comprend une connexion à bride, l'élément en porte-à-faux (5) pouvant être connecté par liaison de force à la connexion à bride.
  10. Renfort de fondation (1) selon l'une des revendications précédentes, caractérisé en ce que l'au moins un élément de support (4) est de conception télescopique, de sorte que sa longueur peut être modifiée et qu'il est sous précontrainte dans un état renforçant la fondation existante (2).
  11. Renfort de fondation (1) selon l'une des revendications précédentes, caractérisé en ce que le renfort de fondation (1), dans un état renforçant la fondation existante (2), provoque une augmentation de la fréquence propre de la structure offshore (3), de sorte qu'une réduction de la fréquence propre de la structure offshore (3) causée par des charges supplémentaires peut être compensée.
  12. Fondation (2) comprenant un renfort de fondation (1) selon l'une quelconque des revendications 1 à 11.
  13. Structure offshore (3) comprenant un renfort de fondation (1) selon l'une quelconque des revendications 1 à 11.
EP19165504.2A 2018-07-20 2019-03-27 Renfort de fondations pour ouvrages en mer Active EP3597829B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018117656.2A DE102018117656A1 (de) 2018-07-20 2018-07-20 Gründungsverstärkung für Offshore-Bauwerke

Publications (2)

Publication Number Publication Date
EP3597829A1 EP3597829A1 (fr) 2020-01-22
EP3597829B1 true EP3597829B1 (fr) 2021-11-03

Family

ID=65995540

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19165504.2A Active EP3597829B1 (fr) 2018-07-20 2019-03-27 Renfort de fondations pour ouvrages en mer

Country Status (2)

Country Link
EP (1) EP3597829B1 (fr)
DE (1) DE102018117656A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017118375A1 (de) * 2017-08-11 2019-02-14 Innogy Se Offshore Bauwerk
CN114855635B (zh) * 2022-05-23 2023-06-16 江苏坤泽科技股份有限公司 跨海大桥桥墩群桩基础用固化土防护施工方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307977A (en) * 1980-05-23 1981-12-29 Mcdermott Incorporated Removable mudmat and method of use on soft floor
NL1026005C1 (nl) * 2004-04-22 2004-10-27 K C I B V Het ontwerp en werkwijze van een platforminrichting bestaande uit een kolomlichaam en gespannen kabels welke op de bodem in een medium wordt opgebouwd.
US8511940B2 (en) * 2009-06-10 2013-08-20 Keystone Engineering Inc Offshore support structure and associated method of installing
GB201011251D0 (en) * 2010-07-05 2010-08-18 Fraenkel Anne Surface breaking re-usable submergeable template for installing one or more submerged columns/piles
CN104395530B (zh) * 2013-01-22 2016-08-24 吴植融 吸力式桩腿、海上沉箱及坐底式海上平台
DE102014220782A1 (de) * 2014-10-14 2016-04-14 Rwe Innogy Gmbh Gründungssystem für die Gründung eines Offshore-Bauwerks, Verfahren zur Gründung eines Offshore-Bauwerks und Offshore-Bauwerk mit einem entsprechenden Gründungssystem

Also Published As

Publication number Publication date
DE102018117656A1 (de) 2020-01-23
EP3597829A1 (fr) 2020-01-22

Similar Documents

Publication Publication Date Title
EP3464882B1 (fr) Éolienne flottante munie d'une pluralité d'unités de conversion d'énergie
EP3048299B1 (fr) Moyen de suspension de charge pour une tour ou une section de tour d'une eolienne et procede de montage d'une eolienne
EP3262240B1 (fr) Socle d'éolienne et éolienne
EP2737143B1 (fr) Dispositif d'ancrage de superstructures dans le sol
EP3092357B1 (fr) Ensemble comprenant une fondation en béton et une tour et procédé d'érection d'une tour
EP3048295B1 (fr) Procede de montage d'une eolienne et eolienne
EP3662122B1 (fr) Fondation d'un bâtiment
EP2673505B1 (fr) Mât pour éolienne
EP2931977B1 (fr) Procédé d'ancrage d'une structure de fondation et structure de fondation
EP2522780A1 (fr) Fondation offshore pour éolienne
EP1399631B1 (fr) Construction porteuse pour la technologie marine, en particulier pour eolienne offshore, et procede de realisation d'une telle construction porteuse
EP3208405B1 (fr) Dispositif et procédé de montage de constructions en forme de tours à partir d'éléments préfabriqués
WO2020211993A1 (fr) Fondation pour une construction off-shore
EP3597829B1 (fr) Renfort de fondations pour ouvrages en mer
DE102010015761B4 (de) Standstruktur
EP3042010B1 (fr) Procede de fabrication des treillis pour une eolienne
WO2013167101A2 (fr) Structure verticale
EP3078778B1 (fr) Fondation pour eolienne
DE102020118713A1 (de) Verfahren zum Herstellen einer Windenergieanlage, Windenergieanlage sowie Torsionsaufnahme
EP3555390B1 (fr) Procédé pour construire une tour d'éolienne en béton précontraint, et tour d'éolienne correspondante
DE10117113A1 (de) Gittermast-Monopfahl als Tragkonstruktion für offshore-Windkraftanlagen
EP3704333B1 (fr) Procédé d'édification d'une tour ayant une section de tour en plusieurs parties
WO2023285068A1 (fr) Structure de fondation d'une construction en mer
DE10222646A1 (de) Gittermast-Monopfahl exzentrisch
DE202015002655U1 (de) Gründungsstruktur zur Gründung einer Windenergieanlage

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200721

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: RWE RENEWABLES GMBH

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: E02B 17/02 20060101AFI20210422BHEP

Ipc: E02D 27/52 20060101ALI20210422BHEP

Ipc: E02D 37/00 20060101ALI20210422BHEP

INTG Intention to grant announced

Effective date: 20210517

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1444043

Country of ref document: AT

Kind code of ref document: T

Effective date: 20211115

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502019002623

Country of ref document: DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20211103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220303

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220303

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220203

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220204

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502019002623

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20220804

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20220331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220327

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220331

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220327

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220331

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20230323

Year of fee payment: 5

Ref country code: DE

Payment date: 20230320

Year of fee payment: 5

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502019002623

Country of ref document: DE

Owner name: RWE OFFSHORE WIND GMBH, DE

Free format text: FORMER OWNER: RWE RENEWABLES GMBH, 45141 ESSEN, DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20190327

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211103