EP4248039A1 - Fondation pour tour d'éolienne - Google Patents

Fondation pour tour d'éolienne

Info

Publication number
EP4248039A1
EP4248039A1 EP21819729.1A EP21819729A EP4248039A1 EP 4248039 A1 EP4248039 A1 EP 4248039A1 EP 21819729 A EP21819729 A EP 21819729A EP 4248039 A1 EP4248039 A1 EP 4248039A1
Authority
EP
European Patent Office
Prior art keywords
prefabricated
elements
prefabricated element
foundation
fastening
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
EP21819729.1A
Other languages
German (de)
English (en)
Inventor
Christoph Schriefer
Gregor Prass
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 EP4248039A1 publication Critical patent/EP4248039A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/42—Foundations for poles, masts or chimneys
    • 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
    • E04H12/2253—Mounting poles or posts to the holder
    • E04H12/2261—Mounting poles or posts to the holder on a flat base

Definitions

  • the invention relates to a foundation for a tower for a wind turbine, the foundation having at least three prefabricated elements made of reinforced concrete and an assembly area for erecting the tower, with at least a first and at least a second prefabricated element forming a lower first section which is is in contact with a ground at the site of erection of the foundation, and wherein at least a third prefabricated element forms an upper section arranged on the first section, wherein the mounting area has at least one attachment point for arranging the tower on the foundation, which is provided on a top side of the upper section is
  • Foundations for towers for a wind turbine 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 possibly erected with a base.
  • Quality assurance is also complex or, depending on the weather, also problematic.
  • a construction site must be set up while the in-situ concrete is curing (e.g. 28 days). Furthermore, the dismantling after the end of the service life of the wind turbine is expensive and very complex.
  • a tower is understood here to mean both a tower made of pipe sections, for example made of concrete and/or steel, and also a truss tower/lattice tower/mast or a combination of both.
  • the invention provides that the at least one first prefabricated element and the at least one second prefabricated element of the lower section are arranged essentially parallel and at a distance from one another, so that there is a distance between the at least two prefabricated elements that at least a third prefabricated element of the upper portion is arranged on the at least one first prefabricated element and on the at least one second prefabricated element such that the at least one third prefabricated element bridges the distance, and that the at least one third prefabricated element has a maximum length such that the at least one third prefabricated element terminates on both sides essentially flush with the outer edge of the at least one first prefabricated element and the at least one second prefabricated element.
  • the at least three prefabricated elements are preferably designed in the form of plates or cuboids.
  • the dimensions of the prefabricated elements are preferably chosen such that the assembly area of the tower extends to the upper section of the foundation, which leads to a particularly simple and inexpensive foundation.
  • Prefabricated elements can, for example, be manufactured on site and then placed at the construction site or, for example, in a concrete plant under defined conditions Conditions are manufactured and then transported to the construction site. Other variants are also possible.
  • the foundation is constructed in particular by providing a depression in the ground at the construction site, for example in the form of trenches or an excavation pit, possibly with a blinding layer, in which the first section of the foundation is then deposited. To increase the load on the foundation or its parts, it can be covered with soil.
  • the at least one fastening point of the assembly area has at least one breakthrough with a vertical extension through at least one prefabricated element for inserting at least one fastening element, with the fastening elements preferably being an anchor cage, vertical bracing elements, prestressing elements, reinforcement elements or anchor elements, preferably threaded rods.
  • the openings are preferably provided in all or at least in all but the lowest prefabricated element in the assembly area. It is advantageous for the openings in the prefabricated elements to be aligned in order to accommodate the fastening elements. These are used to brace/prestress the foundation parts and/or to fasten the tower.
  • a further teaching of the invention provides that at least one connection point has for connecting the upper section to the lower section, and that the at least one connection point has an opening with a vertical extension through at least one prefabricated element for inserting at least one fastening element, which is preferred the fastening elements are an anchor cage, vertical bracing elements, prestressing elements, reinforcement elements or anchor elements, preferably threaded rods.
  • the openings are preferably provided in all or at least in all but the bottom prefabricated element. It is advantageous for the openings in the prefabricated elements to be aligned in order to accommodate the fastening elements. These are used to brace/prestress the foundation parts and/or to fasten the tower.
  • the fastening elements are used to provide a prestress in an element joint between at least two prefabricated elements, so that there is preferably a shear connection in the element joint.
  • a shear connection is preferably provided by prestressing the prefabricated elements in one of the element joints. The load transfer takes place through the prestressing via friction in the element joint. As a result, the fasteners are free from shear loads.
  • the fastening elements are used to brace an element joint between at least two prefabricated ones, which is designed in such a way that a shear hole bearing connection is provided.
  • the at least one third prefabricated element has a width that is less than or equal to the width of the at least one first prefabricated element and/or the at least one second prefabricated element.
  • a further teaching of the invention provides that the at least one third prefabricated element is arranged essentially at right angles (a) to the at least one first element and/or to the at least one second element.
  • precisely one third prefabricated element is provided, or that precisely one third prefabricated element and precisely one fourth prefabricated element are provided, the third prefabricated element and the fourth prefabricated element preferably being arranged parallel and spaced apart from one another.
  • Figure 1 is a spatial view of a first embodiment of a foundation according to the invention
  • Figure 2 is a plan view of Figure 1
  • Figure 3a is a side view of Figure 1
  • Figure 3b is an alternative side view to Figure 1
  • FIG. 4a shows a three-dimensional view of the lower foundation section of FIG
  • Figure 4b is an alternative spatial view of the bottom
  • Figure 5a is a spatial view of the upper foundation section of Figure 1
  • FIG. 5b shows an alternative three-dimensional view of the upper foundation section to FIG. 1,
  • FIG. 6 shows a spatial representation of the fastening means for the figures
  • FIG. 7 shows a spatial view of a second embodiment of a foundation according to the invention.
  • Figure 8 is a plan view of Figure 7,
  • Figure 9 is a side view of Figure 7,
  • FIG. 10 is a spatial view of the lower foundation section of FIG.
  • FIG. 11 is a spatial view of the upper foundation section for FIG. 7,
  • Figure 12 is a spatial representation of the fastening means Figure 7,
  • Figure 13 is a three-dimensional view of a third embodiment of a foundation according to the invention.
  • Figure 14 is a plan view of Figure 13,
  • Figure 15 is a side view of Figure 13,
  • FIG. 16 is a spatial view of the lower foundation section of FIG.
  • FIG. 17 is a spatial view of the upper foundation section of FIG.
  • Figure 18 is a spatial representation of the fastening means Figure 13
  • Figure 19 is a spatial view of a fourth embodiment of a foundation according to the invention.
  • Figure 20 is a plan view of Figure 19,
  • Figure 21 is a side view of Figure 13
  • FIG. 22 is a spatial view of the lower foundation section of FIG. 22
  • FIG. 23 is a spatial view of the upper foundation section of FIG.
  • Figure 24 is a spatial representation of the fasteners Figure 19
  • FIG. 25 is a spatial view of a fifth embodiment of a foundation according to the invention.
  • Figures 1 to 6 show a first embodiment of a foundation 10 according to the invention with a lower section 11 and an upper section 12 arranged above it a distance 18 are arranged.
  • a third element 15 and a fourth element 16 are arranged at an angle a, preferably 90° here, on the upper side of the first element 13 and the second element 14 to form the upper section 12 .
  • the third element 15 is arranged parallel to the fourth element 16 to form the upper section 12 with a spacing 22 .
  • a mounting area 17 is provided on the upper side 23 of the third element 15 and the fourth element 16 .
  • this has four attachment points 20 in order to erect a four-legged tower (not shown) thereon.
  • the length of the third element 15 and the fourth element 16 is chosen such that it corresponds to the width of the first element 13 and the width of the fourth element 14 and the distance 18 between the two in total.
  • the third element 15 and the fourth element 16 thus extend between the outer edges 19 of the first element 13 and the second element 14.
  • the attachment points 20 in the assembly area 17 are provided according to the erection geometry of the tower to be straightened (not shown). In the exemplary embodiment shown, these are offset towards the inner edges 24 of the first element 13 of the second element 14 .
  • connection points 25 are provided offset towards the outer edge 19 on the third element 15 and the fourth element 16 .
  • the number of connection points 25 is dependent on the loads to be removed from the tower to be erected on the foundation 10 .
  • FIGS. 3a, 4a, 5a and 6 show a first embodiment for providing the attachment points 20 and the connection points 25.
  • Anchor cage-like attachment elements 26 are provided at the attachment points 20.
  • FIG. The fastening element 26 has a plate-shaped abutment 28 on its upper side and a plate-shaped abutment 27 on its underside. Between the abutments 27, 28 clamping elements 29 are provided. The clamping element 29 protrudes from the upper abutments 28 .
  • the overhang forms the connecting sections 39 for connecting the tower.
  • the clamping elements 29 can be threaded rods or other anchor rods, for example.
  • the abutment elements 27, 28 of the fastening elements 26 are designed as square plates, which are each connected to four clamping elements 29. Alternative designs and in particular other numbers of clamping elements 29 are possible.
  • connection elements 30 are provided, which in turn also have a plate-like abutment 32 on the upper side and an abutment 31 on the underside, which in turn are connected to a tensioning element 33 .
  • Connecting elements 30 are designed as square plates, which are each connected to a clamping element 33 .
  • Alternative designs and in particular other numbers of clamping elements 33 are possible.
  • the first element 13 and the second element 14 have openings 34, as shown in FIG. 4a, in which the fastening elements 26 and connecting elements 30 are arranged.
  • the openings 34, 35 are aligned in the assembled state.
  • the abutments 31 , 27 are provided on the underside 36 of the first element 13 and the second element 14 .
  • the abutments 28, 32 are provided at the top of the third element 15 and the fourth element 16, the abutments 28, 32 are provided.
  • the clamping elements 33 are provided between the abutments 27, 28.
  • a part of the underside 37 of the third element 15 and the fourth element 16 rests on a corresponding part of the upper side 21 of the first element 13 and the second element 14 . This creates an element joint 38 between the elements 13, 14, 15, 16.
  • a shear connection is provided between the elements 13, 14, 15, 16, which is preferably carried out by a correspondingly strong prestressing in such a way that there is no shearing stress in the fastening elements 26 and the connecting elements 30. Due to the friction prevailing in the element joint 38 due to the prestressing, the loads caused by the tower in the foundation are correspondingly dissipated.
  • bracing could also be designed in such a way that only a shear hole bearing connection is provided if the loads to be transferred are low.
  • FIGS. 3b, 4b and 5b show a second embodiment for providing the attachment points 20 and the connection points 25.
  • Anchor cage-like attachment elements 26 are provided at the attachment points 20, as shown in FIG.
  • the fastening element 26 has a plate-shaped abutment 28 on its upper side and a plate-shaped abutment 27 on its underside. Between the abutments 27, 28 clamping elements 29 are provided.
  • the clamping element 29 protrudes from the upper abutments 28 .
  • the overhang forms the connecting sections 39 for connecting the tower.
  • the clamping elements 29 can be threaded rods or other anchor rods, for example.
  • the abutment elements 27, 28 of the fastening elements 26 are designed as square plates, which are each connected to four clamping elements 29. Alternative designs and in particular other numbers of clamping elements 29 are possible.
  • Connection elements 30 are provided at the connection point 25, as shown in FIG.
  • the abutment elements 31, 32 of the connecting elements 30 are designed as square plates, which are each connected to a clamping element 33 .
  • Alternative designs and in particular other numbers of clamping elements 33 are possible.
  • the third element 15 and the fourth element 16 have openings 35 according to FIG. 5b. During assembly, the openings 35 are slipped onto the clamping elements 29, 33 protruding from the elements 13, 14. The upper abutments 28, 32 are inserted into recesses 40, 41 on the top 23.
  • the indentations can also be used in the first embodiment.
  • the prestressing or bracing takes place as previously described.
  • FIGS. 7-12 show a second embodiment of a foundation 10 according to the invention, in which a third and fourth element 15, 16 are also arranged on a first and second element 13, 14.
  • the second embodiment shows a foundation 10 for attaching a three-legged tower. Consequently, only three attachment points 20 are provided.
  • Two attachment points are located, for example, on the third element 15 such that their attachment elements 26 are arranged in the openings 34, 35 and brace the third element 15 with the first element 13 and the second element 14, as was already shown in the first exemplary embodiment .
  • the connection points 25 are also provided accordingly. Only the upper abutment 28 and the openings 34 and 35 corresponding thereto are correspondingly twisted to match the three-legged tower.
  • the clamping elements 29 are made correspondingly shorter.
  • additional connection points 25 with corresponding connection elements 30 are provided.
  • connection points 25 provided on the fourth element 16 are provided with further connection points 25 which are correspondingly shifted opposite one another towards the region of the distance 18 .
  • the connection elements 30 and the fastening elements 26 are constructed as shown in FIG. Here, too, it would be alternatively possible to partially provide the fastening elements 26 and connecting elements 25 by installing the abutments 27, 31 and the clamping elements 29, 33 in the first element 13 and the second element 14.
  • Figures 13-18 which show a third embodiment
  • Figures 19-24 which show a fourth embodiment
  • the width is selected in such a way that the mounting area 17 can be arranged completely on the third element 15 .
  • the third and the fourth exemplary embodiment again show the arrangement of a three-legged tower.
  • the exemplary embodiments are also suitable for four-legged or multi-legged towers.
  • This embodiment is also suitable for a round tower, as shown in FIG. 25 as a further embodiment.
  • the third and fourth embodiments differ here only in the number of connection points 25.
  • the third attachment point 20 is also again in the area of the distance 18, so that it is not used to connect the third element 15 to the first element 13 and the second element 14 contributes.
  • the rest of the structure corresponds to the versions described above.
  • FIG. 25 shows an embodiment in which a round tower is arranged on the mounting area 17 on the upper section 12 in the form of a third element 15.
  • FIG. 25 shows an embodiment in which a round tower is arranged on the mounting area 17 on the upper section 12 in the form of a third element 15.
  • openings 35 are provided in the third element 15, which are provided partially in the region of the distance 18 and partially above the first and second element 13, 14.
  • an anchor cage is used as a fastening element 26 (not shown), which is provided in divided form for assembly. Sections of the anchor cage are provided on the underside 37 of the third element 15 and further sections on the underside 36 of the first and second elements 13,14 (each not shown), which are then arranged in openings 34 and 35 analogously to what was previously disclosed.
  • an upper abutment 28 divided into several parts or a one-piece abutment 28 can be provided on the upper side. Connection points are again analogous on the outer sides of the third element 15

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

Abstract

L'invention concerne une fondation pour une tour d'éolienne, la fondation comprenant au moins trois éléments préfabriqués en béton armé et une région de montage pour monter la tour, au moins un premier et au moins un deuxième élément préfabriqué formant une première partie inférieure qui est en contact avec le sol au niveau du site d'érection de la fondation, et au moins un troisième élément préfabriqué formant une partie supérieure qui est située sur ladite première partie, la zone de montage comprenant au moins un point de fixation pour positionner la tour sur la fondation, ledit point de fixation étant disposé sur un côté supérieur de la partie supérieure. Avantageusement : le ou les premiers éléments préfabriqués et le ou les deuxièmes éléments préfabriqués de la partie inférieure sont positionnés sensiblement parallèlement et espacés les uns des autres de telle sorte qu'il existe une distance entre les au moins deux éléments préfabriqués ; au moins un troisième élément préfabriqué de la partie supérieure est positionné sur le ou les premiers éléments préfabriqués et sur le ou les deuxièmes éléments préfabriqués de sorte que ledit troisième élément préfabriqué comble la distance ; et le ou les troisièmes éléments préfabriqués ont une longueur maximale de telle sorte que le ou les troisièmes éléments préfabriqués sont sensiblement alignés des deux côtés avec le bord extérieur du ou des premiers éléments préfabriqués et du ou des deuxièmes éléments préfabriqués.
EP21819729.1A 2020-11-20 2021-11-15 Fondation pour tour d'éolienne Pending EP4248039A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102020130813 2020-11-20
DE102021106003 2021-03-11
PCT/EP2021/081733 WO2022106368A1 (fr) 2020-11-20 2021-11-15 Fondation pour tour d'éolienne

Publications (1)

Publication Number Publication Date
EP4248039A1 true EP4248039A1 (fr) 2023-09-27

Family

ID=78821827

Family Applications (2)

Application Number Title Priority Date Filing Date
EP21819729.1A Pending EP4248039A1 (fr) 2020-11-20 2021-11-15 Fondation pour tour d'éolienne
EP21819730.9A Active EP4248017B1 (fr) 2020-11-20 2021-11-15 Fondation pour tour d'une station de transmission ou pour la construction d'une ligne aérienne

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP21819730.9A Active EP4248017B1 (fr) 2020-11-20 2021-11-15 Fondation pour tour d'une station de transmission ou pour la construction d'une ligne aérienne

Country Status (6)

Country Link
US (1) US20250297446A1 (fr)
EP (2) EP4248039A1 (fr)
DE (2) DE102021129748A1 (fr)
PL (1) PL4248017T3 (fr)
SA (1) SA523440855B1 (fr)
WO (2) WO2022106368A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5456555A (en) * 1992-11-09 1995-10-10 Boekeler; Hans-Joerg Structural set of angle elements fitting into one another
DE202016006586U1 (de) * 2016-10-25 2016-12-28 Margit Niklas Sonnenschirmständer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2707313B1 (fr) * 1993-07-08 1999-02-26 Mathon Jean Claude Structure d'ancrage et de liaison amovible et polyvalente pour ossatures pré infrastructures.
DE202015003668U1 (de) * 2015-05-08 2015-11-05 Cteam Consulting & Anlagenbau Gmbh Unterbau für einen Mast und Mastsystem
DE102018121024A1 (de) * 2018-08-28 2020-03-05 Universelle-Fertigteil-Fundamente GmbH Fundament für eine Windkraftanlage

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5456555A (en) * 1992-11-09 1995-10-10 Boekeler; Hans-Joerg Structural set of angle elements fitting into one another
DE202016006586U1 (de) * 2016-10-25 2016-12-28 Margit Niklas Sonnenschirmständer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2022106368A1 *

Also Published As

Publication number Publication date
SA523440855B1 (ar) 2024-10-02
PL4248017T3 (pl) 2026-03-30
EP4248017A1 (fr) 2023-09-27
EP4248017B1 (fr) 2025-12-31
EP4248017C0 (fr) 2025-12-31
WO2022106371A1 (fr) 2022-05-27
WO2022106368A1 (fr) 2022-05-27
DE102021129748A1 (de) 2022-05-25
US20250297446A1 (en) 2025-09-25
DE102021129759A1 (de) 2022-05-25

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