EP4222319A1 - Fondation pour une éolienne - Google Patents

Fondation pour une éolienne

Info

Publication number
EP4222319A1
EP4222319A1 EP21786343.0A EP21786343A EP4222319A1 EP 4222319 A1 EP4222319 A1 EP 4222319A1 EP 21786343 A EP21786343 A EP 21786343A EP 4222319 A1 EP4222319 A1 EP 4222319A1
Authority
EP
European Patent Office
Prior art keywords
elements
section
layers
foundation
foundation according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21786343.0A
Other languages
German (de)
English (en)
Inventor
Gregor Prass
Christoph Schriefer
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.)
Smart and Green Mukran Concrete GmbH
Original Assignee
Smart and Green Mukran Concrete 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 Smart and Green Mukran Concrete GmbH filed Critical Smart and Green Mukran Concrete GmbH
Publication of EP4222319A1 publication Critical patent/EP4222319A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • E02D27/42—Foundations for poles, masts or chimneys
    • E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/01—Flat foundations
    • E02D27/016—Flat foundations made mainly from prefabricated concrete elements
    • 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
    • E02D27/42—Foundations for poles, masts or chimneys
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E02D5/801—Ground anchors driven by screwing
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/22—Sockets or holders for poles or posts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/22—Sockets or holders for poles or posts
    • E04H12/2238—Sockets or holders for poles or posts to be placed on the ground
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0004—Synthetics
    • E02D2300/0018—Cement used as binder
    • E02D2300/002—Concrete
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/30—Miscellaneous comprising anchoring details
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/01—Flat foundations
    • E02D27/08—Reinforcements for flat foundations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/728—Onshore wind turbines

Definitions

  • the invention relates to a foundation for a wind turbine, the foundation essentially having prefabricated elements, preferably made of reinforced concrete, with a first, vertically extending section designed in the manner of a base, on which a tower of the wind turbine can be arranged, and a second essentially horizontally extending portion as a foundation body which is in contact with the ground, the first portion being located above the second portion.
  • Foundations for wind turbines are essentially designed as in-situ concrete foundations.
  • a pit is dug at the construction site, which is provided with a blinding layer.
  • the formwork and reinforcement are then erected and the whole thing filled with concrete on site.
  • a flat body is erected, if necessary with a base, see for example US 20160369520 A1 or WO 2008/036934 A2.
  • Quality assurance is also complex or, depending on the weather, also problematic.
  • the dismantling after the end of the service life of the wind turbine is expensive and very complex.
  • WO 2008/036934 A2 shows a combination of prefabricated elements and classic formwork/reinforcement construction. As a result, the aforementioned disadvantages are reduced only insignificantly.
  • EP 1 058 787 B1 discloses a foundation for a wind power plant in order to construct offshore wind power plants which are transported completely pre-assembled—that is to say including the foundation—and set down on the seabed in one piece at the erection site.
  • the foundation has individual prefabricated segments. These can be made of concrete.
  • a planar portion and a base portion are disclosed.
  • the base section consists of circular rings.
  • the flat section consists of individual basic elements with a trapezoidal base area, on which the base section is mounted vertically at the inner end, which has vertical passages.
  • the flat base sections are connected to one another by means of tongue and groove connections.
  • the base section and the flat base section are connected with a diagonal strut for reinforcement.
  • the circular segments of the base section also have vertical passages.
  • WO 2004/101898 A2 discloses a foundation for a wind turbine made of prefabricated concrete parts, with either a central body being provided to which flat bodies are screwed horizontally, or the foundation consists exclusively of components that have both a flat section and a base-like section, with these then connected horizontally to each other by screwing against flanges.
  • the disadvantage here is that here, too, considerable costs and a considerable amount of work are necessary for connecting the elements and producing the statically loadable foundation.
  • EP 2 182 201 A1 discloses two different foundations for a wind turbine.
  • a foundation is erected from prefabricated concrete parts after a corresponding delivery on site. Both include a planar section and a socket-like section.
  • a central body is provided.
  • the ribs/surface elements are attached to these. When assembled, the ribs form a polygonal body.
  • the central body has a projection which is embraced by a corresponding recess on the ribs.
  • the ribs are additionally locked against the central body by means of a lashing ring.
  • Anchor rods for mounting the tower are provided on the surface bodies.
  • the ribs have horizontally projecting anchor elements which, in the assembled state, extend radially into the center of the foundation.
  • Plates are provided below and above the anchors.
  • the in-situ concrete is introduced into the cavity thus formed in order to connect the anchors to one another and to form a central body.
  • the horizontal connection is simplified.
  • both the ribs and the central body have dimensions and masses that make transport complicated.
  • WO 2017/141095 A1 and WO 2017/141098 A1 also disclose a foundation for a wind turbine.
  • This foundation is formed from prefabricated ribbed bodies which have a base section at their inner end, on which the tower of the wind turbine is arranged.
  • the ribs radiate outward.
  • the sections between the ribs are in a further embodiment filled with plate elements which are screwed against the flanged ribs to produce a plate.
  • a steel sleeve is provided, which is connected to reinforcements provided inside the ribs and reinforcement beams provided in the inner cavity.
  • the ribs have a base plate. On which a diagonal reinforcement member and the base portion are integrally arranged.
  • the base sections are connected to one another horizontally via tongue and groove elements. Furthermore, the base sections have horizontal openings in which clamping elements are provided for horizontally connecting the base sections. Furthermore, in the base sections Cast-in anchor rods for connecting the tower to the foundation. Furthermore, external ground anchors are also disclosed.
  • WO 2019/115622 A1 and WO 2019/201714 A2 disclose the first successful foundations for wind turbines made from precast concrete parts for a steel tower and for a concrete tower for a wind turbine.
  • the foundations have two sections.
  • rib elements are provided which have a central section on which a base section is provided.
  • the tower of the wind turbine is then arranged on the base section.
  • the base section consists of individual segments that are connected to each other.
  • the rib elements and the base elements are clamped together by means of tensioning members which are provided in openings in the central section and in the elements of the base section. Further developments of these foundations have resulted in surprising and particularly efficient improvements in the area of the base.
  • the object of the invention is therefore to overcome the disadvantages mentioned above and to make foundations for wind turbines, in particular for wind turbines with concrete towers, economically erectable or more erectable from prefabricated elements.
  • the first, vertically extending section designed like a base is formed from at least three layers arranged one on top of the other, of which the upper and the lower layer consists of at least two layers designed like a ring and the middle layer consists of at least one layer designed like a ring is formed in that the height of the upper and/or lower layer is less than the height of the middle layer, and that the layers are braced vertically with the second section by means of at least two vertical tension members.
  • Such foundations according to the invention are suitable both for concrete towers and for steel towers.
  • the advantage here is that with this foundation horizontal connecting means can be completely dispensed with, with sufficient stability even in extreme stress situations. Surprisingly, this is achieved in particular by the upper and lower layer of at least two ring-like layers in connection with bracing by prestressed tendons.
  • a further teaching of the invention provides that the total height of the upper and lower layers is less than the height of the middle layer. As a result, surprisingly, an optimal load distribution can be achieved in the foundation.
  • a further teaching of the invention provides that at least one of the layers consists of at least one prefabricated element, preferably of reinforced concrete.
  • at least one of the layers consists of at least two prefabricated elements, preferably of reinforced concrete.
  • at least two adjacent layers consist of at least two prefabricated elements, preferably of reinforced concrete. This facilitates the standardized erection of the foundation and reduces the necessary number of transports to the construction site, in particular of in-situ concrete.
  • the at least two elements are arranged butted and form the annular layer in the vertical joints between the at least two elements without horizontal fastening means. It is advantageous that the vertical joints are provided without tension and/or that the at least two elements are arranged without contact in the vertical joints. This in turn facilitates the standardized erection of the foundation and at the same time keeps the costs low because the prefabricated components in the area of the vertical butt joints can be worked with, for example, at distances of up to 3 cm, with the tolerances customary in concrete construction during manufacture. Surprisingly, it has also been shown that with such an arrangement there is sufficient stability even in extreme load situations in the foundation.
  • butt joints or vertical joints of two layers lying directly one on top of the other are not aligned. Surprisingly, it has been shown that it is possible to break down the individual ring-type layers into individual elements and at the same time to achieve sufficient stability even in extreme load situations in the foundation.
  • a further teaching of the invention provides that the prefabricated elements of the first and/or second section are arranged connected to one another essentially without horizontal connecting means, preferably with a vertical spacing between the prefabricated elements.
  • a further teaching of the invention provides that the prefabricated elements of the lower and/or upper layer have reinforced reinforcement in the normal direction (tension/compression reinforcement) and/or that the prefabricated elements of the middle layer have at least one reinforced reinforcement for dissipating shear loads, in particular in the radial direction.
  • the provision of the reinforcements in the manner described above enables a cost-effective construction of the foundation.
  • a further teaching of the invention provides that at least one horizontal joint between the prefabricated elements of the first and/or second section is arranged one on top of the other without in-situ concrete and/or mortar. It has been shown that the provision of horizontal contact of the prefabricated elements with sufficiently precise manufacture (small tolerances in the horizontal direction of the prefabricated elements) causes sufficient friction in the horizontal joints by the prestressing, so that there is sufficient stability in the foundation even under extreme conditions stressful situation is given.
  • a further teaching of the invention provides that the prestressing by the at least two tendons is designed in such a way that all horizontal joints between the layers are under pressure in every operating state and in every extreme load state of the wind turbine. This causes sufficient friction of the prefabricated elements in a particularly simple manner, particularly in the horizontal joints between the prefabricated elements, so that the foundation is given sufficient stability for the horizontal joints even under extreme loads even without materially bonded connections.
  • a further teaching of the invention provides that at least two ring-like abutments, preferably in the form of at least one abutment ring, are provided, against which the tendons act, with at least one abutment on the upper side of the first section and at least one abutment on the underside of the second Section is arranged.
  • the necessary load abutment for the tendons and the prestressing introduced via it are provided in a simple manner.
  • at least one abutment and/or at least one abutment ring consists of at least two prefabricated elements which are arranged in abutting manner in order to produce the ring-like abutment and/or abutment ring. This facilitates the transport of the prefabricated elements.
  • At least one abutment has at least two layers arranged one above the other. This makes it possible to erect the foundation in a standardized manner depending on the prestress introduced. Furthermore, it is advantageous that the layers each have at least two elements that are arranged butted, the joints of two layers lying directly one above the other not being arranged in alignment. This avoids costly welding work on site and reduces the construction time of the foundation. Furthermore, it is possible in a simple manner to derive the prestressing loads adequately via the abutment constructed in this way, depending on the foundation design
  • a further teaching of the invention provides that the second section is formed from at least three horizontal elements and that the horizontal elements can be arranged depending on the parameters of the tower to be erected, in particular the tower radius. It is advantageous that the horizontal elements are arranged laterally spaced apart from one another, or that the horizontal elements are arranged laterally parallel and spaced apart from one another. This makes it possible in a particularly simple manner to provide a foundation depending on the dimensions of the tower to be erected. In particular, it is possible to create foundations for different tower radii with one type of horizontal element by moving the horizontal elements in parallel accordingly.
  • a further teaching of the invention provides that the elements of the at least three layers of the first section have at least two essentially vertical openings, in each of which a tendon, preferably a threaded rod or an anchor bolt with counter elements, is arranged.
  • a tendon preferably a threaded rod or an anchor bolt with counter elements.
  • FIG. 1 shows a sectional view of a preferred embodiment of a foundation according to the invention
  • Fig. 2 is a three-dimensional view of Fig. 1,
  • Fig. 3 is a plan view of Fig. 1,
  • FIG. 5a shows a plan view of arranged surface elements of the foundation according to the invention
  • Fig. 5b shows a detailed view of Fig. 5a
  • 9a is a three-dimensional view of an anchor cage according to the invention.
  • Fig. 9b shows a detailed view of Fig. 9a
  • Fig. 10 is a plan view of an upper abutment ring of the anchor cage of Fig.
  • Fig. 11 is a plan view of a lower abutment ring of the anchor cage of Fig.
  • Fig. 12b shows a detailed view of Fig. 12a
  • Fig. 14a to 14d different arrangement options to Fig. 5a.
  • a foundation 10 according to the invention is arranged in a sectional view in a pit 101 in the ground 100, optionally on an optionally compacted blinding layer 102.
  • the foundation 10 has a first section 11 and a second section 12 .
  • a third section can optionally be provided under the second section 12, which is then preferably provided in a recess (not shown) if it should be necessary for static reasons to extend the base 20 further into the ground .
  • the first section 11 is designed as a base 20 which is made up of several layers 13, 16, 17, the layers 13, 16, 17 being made up of, for example, 5 layers 13a, 13b, 16a, 17a, 17b. If necessary, further layers can be provided.
  • the layers 13a, 13b, 16a, 17a, 17b are made up of closed base sections 14, which in turn are made up of individual base segments 33, 34, 35 (see FIGS. 6a to 8b).
  • the base sections 14 are preferably designed here as circular rings, so that the base section 11 has an interior space 15 .
  • An alternative structure, for example a polygonal structure, is possible.
  • the layers 13, 16, 17 are preferably composed of the individual layers 13a, 13b, 16a, 17a, 17b, the layers themselves being composed of base segments 33, 34, 35 that match the layers.
  • the top layer 13 has two layers 13a, 13b.
  • the upper layer 13a is composed of base segments 33 with a height H, for example according to FIGS. 6a, 6b.
  • On the top 36 three wells 37 are provided here, for example, in which an upper Connection flange 51 of an anchor cage 50, see Fig. 9a to 12a can be used.
  • the openings 18 for the clamping elements 19 are provided in the depressions 37 .
  • a layer 13b is provided underneath, which is composed of base segments 35 (FIGS. 7a, 7b) with a height I, which are also provided with openings 18 for the clamping elements 19.
  • the height I can be identical to the height H of the base segments 34 and is preferably the same.
  • the layer 16a As the middle layer 16. This is composed of base segments 34 with a height J.
  • the base segments 34 are also provided with openings 18 for the clamping elements 19.
  • the base segments 33, 34, 35 are preferably designed very precisely with regard to the height H, I, J, i.e. with the smallest possible height deviations, in order to achieve the largest possible contact surface of the base segments 33, 34, 35 on one another when they are mounted on top of one another to form the base 20 are arranged and are prestressed.
  • the height H, I of the base segments 33, 35 is designed in such a way that, when installed, it is essentially only subjected to tensile/compressive loads, ie it is subjected to loads in the normal direction.
  • the reinforcement is also designed for this (not shown), which essentially consists of reinforcement in the normal direction.
  • the heights H and I are preferably the same.
  • the height J of the base segments 34 is designed in such a way that, in the installed state, it is essentially only subjected to a shearing load.
  • the reinforcement is also designed for this (not shown), which essentially consists of reinforcement in the radial direction, particularly preferably in the form of stirrups.
  • the arrangement of the segments 33, 34, 35 to ring-like layers 13a, 13b, 16a, 17a, 17b and the arrangement of layers 13a, 13b, 16a, 17a, 17b on top of each other to form the layers 13, 16, 17, which then form the base, is shown spatially in FIG.
  • the base segments 33, 34, 35 are pushed side by side provided so that between these vertical Joints 38 exist. These are preferably designed as a gap with a thickness of several millimeters, for example 30 mm.
  • These vertical joints 38 are preferably not filled with mortar or cast-in-place concrete. Furthermore, preferably no horizontal connecting means are provided.
  • the vertical joints of the individual layers 13a, 13b, 16a, 17a, 17b are preferably provided in such a way that the vertical joints 38 of adjacent layers 13a, 13b, 16a, 17a, 17b are not aligned, ie are not arranged one above the other. As illustrated in FIG. 2, it is advantageous if the vertical gaps 38 are always offset by substantially the same amount in the clockwise or counterclockwise direction.
  • the base segments 33, 34, 35 have vertical openings 18 in which 10 tendons 19, such as anchor or rebars 19 are provided with counter elements such as nuts 21 to bias the foundation 10 during assembly of the foundation. Together with abutments 51, 54 composed of flange plates 52, 55, these form an anchor cage 50.
  • the connection adapter 53 for the tower can also be a component of the upper abutment 51 if, for example, the tower is a steel tower.
  • the second section 12 is flat. Alternatively, it can also be realized in a star shape.
  • a plan view of the foundation 10 is shown in FIG. Fig. 2 shows a three-dimensional view of the foundation 10.
  • the second section 12 is made of horizontal elements 22 in the form of rib elements. These are shown in Figures 4a to 4e. Seen from the interior 15, these extend radially outwards.
  • a base plate 23 which is designed, for example, in the shape of a trapezium, so that all assembled base plates form a polygonal surface (see FIGS. 3, 5a) which approximates a circular shape.
  • Distances B can preferably be provided between side walls 44 of the base plates 23, which distances depend on the diameter of the tower to be erected.
  • a support section 25 At the inner end 24 of the base plate 23 there is a support section 25 with a body and side walls 29 which preferably essentially corresponds to the base 20 of the first section 11 . Breakthroughs 18 can also be provided in the support section 25 .
  • reinforcing bars or anchor rods 19 can be installed in the support section 25, which extend outwards from the concrete of the base-like section 25 of the horizontal element 22.
  • the base 20 with its at least one base element 14 is arranged on the support section 25 .
  • the stiffening wall 26 is arranged at right angles to the base plate, the height of which decreases towards the outer end 27 of the base plate 23, for example.
  • the base plate 23 is tapered in parallel with respect to the side surfaces 29 of the body 30 of the support section 25 .
  • the parallel taper 31 is represented by the arrow D in FIG. 4c. A reduction in material is preferably achieved as a result.
  • the body 30 has a transition area 32 with which the stiffening wall 26 is connected to the support section 25 in a reinforcing manner.
  • a distance C is preferably provided as a vertical joint 40 when the horizontal elements 22 are arranged, which is preferably designed as an air gap. This creates vertical joints 40, which are also preferably not filled with mortar or in-situ concrete. Furthermore, preferably no horizontal connecting means are provided.
  • An upwardly open cavity 28 is formed between two adjacent stiffening walls 26, into which backfill soil 104 can be introduced, as a result of which a load can be applied to the second section 12 of the foundation 10.
  • cover plates 48 (FIGS. 13a, 13b) are provided, which are placed on two adjacent base plates 23 in order to cover the distance B between two side surfaces 44, so that the bottom 104 does not get into the distance B or through the distance B can.
  • the cover plates 48 have a tapered section 49 which is adapted to the transition area 32 . Through the cover plate 48, the full load of the heap base 104 can be applied to the second section 12 by introducing it into the cavity 28.
  • the interior space 15 can be filled with fill soil 104 and covered with a cover element 103 .
  • a horizontal member 22 it is possible with a horizontal member 22 to form a second section having interior spaces 15 of different sizes by sliding the horizontal members 22 inwards or outwards along a ray emanating from the center, like this one is represented by the double arrow A in FIG. 19d. Inwards, this is limited by the fact that the side surfaces 44 of the base plates 23 of the horizontal elements 22 touch. To the outside, this depends on the radius 45 of the tower to be erected, which is represented by a circle 46 in FIGS. 14a to 14d.
  • the distance B is preferably the same over the entire length of the side surfaces 44 from the inner end 24 to the outer end 27, so that two side surfaces 44 are arranged parallel to one another. In this way, foundations for towers with different diameters can be erected in a simple manner, preferably with a single horizontal element 22 .
  • an anchor cage 50 is formed, as shown in Fig. 9a to 12b, which consists of an upper and a lower abutment 51, 54, which are shown in FIG. 10 and FIG. 11, which are connected to clamping elements 19, for example in the form of anchor rods or reinforcing bars and counter elements 21, for example nuts.
  • the upper and lower abutment elements 51, 54 are composed, for example, of three concentric abutment rings 51a, 51b, 51c, 54a, 54b, 54c, of which the central abutment ring 51b preferably contains the connection adapter 53 for the tower of the wind turbine here.
  • the abutment rings 51a, 51b, 51c, 54a, 54b, 54c can be provided from individual flange plates 52, 55, which are arranged butted against one another, as is shown in FIG. 3, FIG. 9b as detail F for FIG. 9a and FIG. 12b as detail G for FIG. 12a.
  • several flange plates 52, 55 can be arranged one above the other.
  • the flange plates 52, 55 are preferably not welded to one another, but rest on or against one another.
  • the flange plates 52, 55 have openings 57 and can be provided with different widths and different numbers of rows of openings 57 per flange plate 52, 55.
  • the abutment ring 51b can preferably be designed integrally with the connection adapter 53 as a flange plate 52 .
  • tendon/anchor rods 54 lower abutment base 55 flange plate

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

Abstract

L'invention concerne une fondation pour une éolienne, la fondation (10) comprenant des éléments sensiblement préfabriqués, de préférence en béton armé, ayant une première section de type socle s'étendant verticalement (11), sur laquelle une tour de l'éolienne peut être disposée, et ayant une seconde section s'étendant sensiblement horizontalement (12) en tant que corps de fondation qui est en contact avec le sol (100), la première section (11) étant disposée au-dessus de la seconde section (12). Selon l'invention, la première section de type socle s'étendant verticalement (11) est formée à partir d'au moins trois couches (13, 16, 17) disposées les unes au-dessus des autres, dont la couche supérieure et la couche inférieure (13, 17) sont formées à partir d'au moins deux couches de type anneau (13a, 13b, 17a, 17b) et la couche centrale (16) est formée à partir d'au moins une couche de type anneau (16a), la hauteur (H + l, 2 x l) de la couche supérieure et/ou inférieure (13, 17) est inférieure à la hauteur (J) de la couche centrale (16), et les couches (13, 16, 17) sont serrées verticalement avec la seconde section (12) au moyen d'au moins deux éléments de tension verticaux (19).
EP21786343.0A 2020-09-29 2021-09-23 Fondation pour une éolienne Pending EP4222319A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020125441.5A DE102020125441A1 (de) 2020-09-29 2020-09-29 Fundament für eine Windkraftanlage
PCT/EP2021/076159 WO2022069333A1 (fr) 2020-09-29 2021-09-23 Fondation pour une éolienne

Publications (1)

Publication Number Publication Date
EP4222319A1 true EP4222319A1 (fr) 2023-08-09

Family

ID=78078178

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21786343.0A Pending EP4222319A1 (fr) 2020-09-29 2021-09-23 Fondation pour une éolienne

Country Status (7)

Country Link
US (1) US20240003112A1 (fr)
EP (1) EP4222319A1 (fr)
AU (1) AU2021352083A1 (fr)
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WO1999043956A1 (fr) 1998-02-27 1999-09-02 Bonus Energy A/S Procede permettant d'installer des eoliennes en mer, fondation pour lesdites eoliennes et utilisation de ladite fondation
EP1074663A1 (fr) 1999-08-06 2001-02-07 Carl Bro as Fondation de batiment, en particulier pour une structure d'une tour, turbine a vent, ou similair
DE10321647A1 (de) 2003-05-13 2004-12-02 Wobben, Aloys, Dipl.-Ing. Fundament für eine Windenergieanlage
WO2008036934A2 (fr) 2006-09-21 2008-03-27 Ahmed Phuly Système de fondation modulaire partiellement préfabriqué
ES2448769T3 (es) 2008-11-03 2014-03-17 Siemens Aktiengesellschaft Cimentación, particularmente para una turbina eólica, y turbina eólica
CN206844794U (zh) 2013-05-10 2018-01-05 艾瑞电信公司 用于单极子的底座和单极子结构
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AT517958B1 (de) 2016-02-18 2017-06-15 Holcim Technology Ltd Fundament für ein Windrad
AT517959B1 (de) 2016-02-18 2017-06-15 Holcim Technology Ltd Fundament für ein Windrad
AT519189B1 (de) * 2016-09-26 2020-04-15 Holcim Technology Ltd Fundament für eine Windmühle
DE102018112857A1 (de) 2017-12-13 2019-06-13 Universelle-Fertigteil-Fundamente GmbH Fundament für eine Windkraftanlage
DE102019109503A1 (de) 2018-04-16 2019-10-17 Universelle-Fertigteil-Fundamente GmbH Fundament für eine Windkraftanlage
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CA3194308A1 (fr) 2022-04-07
DE102020125441A1 (de) 2022-03-31
BR112023005812A2 (pt) 2023-05-02
AU2021352083A9 (en) 2024-06-06
US20240003112A1 (en) 2024-01-04
AU2021352083A1 (en) 2023-06-08

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