[go: up one dir, main page]

EP3845712A1 - Vorgefertigte fundamentstruktur für eine windturbine, windturbine und montageverfahren einer windturbine - Google Patents

Vorgefertigte fundamentstruktur für eine windturbine, windturbine und montageverfahren einer windturbine Download PDF

Info

Publication number
EP3845712A1
EP3845712A1 EP19383224.3A EP19383224A EP3845712A1 EP 3845712 A1 EP3845712 A1 EP 3845712A1 EP 19383224 A EP19383224 A EP 19383224A EP 3845712 A1 EP3845712 A1 EP 3845712A1
Authority
EP
European Patent Office
Prior art keywords
wind turbine
footing
ribs
foundation structure
precast foundation
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
EP19383224.3A
Other languages
English (en)
French (fr)
Inventor
Aitor Garduño Estebanez
Iván García Maestre
Jose Luis Arístegui Lantero
Miguel NÚÑEZ POLO
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.)
Nordex Energy Spain SA
Original Assignee
Nordex Energy Spain SA
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 Nordex Energy Spain SA filed Critical Nordex Energy Spain SA
Priority to EP19383224.3A priority Critical patent/EP3845712A1/de
Priority to BR102020026969-0A priority patent/BR102020026969A2/pt
Priority to MX2021000054A priority patent/MX2021000054A/es
Publication of EP3845712A1 publication Critical patent/EP3845712A1/de
Pending legal-status Critical Current

Links

Images

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

Definitions

  • the present invention relates to a precast foundation structure for a wind turbine that is independent of the type of ground since a large part of the precast foundation structure is homogenized and wherein the size of a transition structure does not change when the ground conditions do.
  • the object of the present invention is a precast foundation structure for a wind turbine easily adaptable to the geotechnical conditions of each wind turbine position of the windfarm which allows a significant reduction in time and cost.
  • the invention also relates to an assembly method of a wind turbine.
  • Document EP2064393B1 discloses a foundation for a tower structure having a central pedestal of the rib on a slab type, the foundation comprising a prefabricated or cast-in-situ rib with a horizontal base having two sides and having a means along the length of the two sides of the horizontal base, or a means, under the base for connecting to and being structurally fixed to a cast-in-situ slab, wherein such means ensure structural continuity of the slab across or under the rib, and the rib has a proximal vertical end having a means thereon for connecting to and being structurally fixed to a cast-in-situ pedestal wherein such means ensure structural continuity of the pedestal to the rib, and post tensioning elements running through the ribs and the pedestal for connecting the ribs to the pedestal under post compression stress.
  • US9938685B2 discloses a foundation system for a tower, such as a wind turbine, includes a central hub assembly, a plurality of post-tensioned concrete beams, and an anchoring system associated with each beam, wherein in use the foundation system is arranged so that the bottom surfaces of the concrete beams bear on ground and the anchoring is disposed within the ground.
  • the foundation structure is dependent from the type of ground wherein the foundation id disposed in such a way that the size of the ribs or post-tensioned concrete beams must be changed when the ground conditions vary.
  • the precast foundation structure of the present invention solves the aforementioned drawbacks.
  • the present invention relates to a precast foundation structure for a wind turbine that is independent of the type of ground since a large part of the precast foundation structure is homogenized and wherein the size of a transition structures does not change when the ground conditions do.
  • the precast foundation structure for a wind turbine comprises:
  • the footing comprises dimensions that are dependent on the features of the ground but are independent of loads transmitted by the tower of the wind turbine.
  • the precast foundation structure for a wind turbine is not determined by any type of terrain and, when the features of the ground changes, instead of a full redesign of the whole foundation, it is only necessary to carry out a specific design of the footing on which to support this foundation structure.
  • the surface of the footing is varied so that the poorer the quality of the ground (lower maximum permissible stress), the greater the surface of the footing in contact with the ground), without the need of modifying the design of the rest of the foundation elements.
  • the plurality of ribs are precast concrete ribs.
  • the precast foundation structure is easily adaptable to the geotechnical conditions of each wind turbine position of the wind farm, which allows a significant reduction in time and cost.
  • the footing could consist of a footing itself, a rock anchor, a pile cap of micropiles, but the transition structure would not be modified.
  • each one of the plurality of ribs comprises a first end defining at least partially the surface or the vertical projection of the surface wherein a tower of the wind turbine is intended to be coupled, and a second end arranged in the footing.
  • the second ends of the plurality of ribs rest on the footing. More preferably, the second ends of the plurality of ribs rest on the footing without being connected to the footing.
  • the second ends of the plurality of ribs are integrated into the footing.
  • the second ends of the plurality of ribs are connected to the footing.
  • the second ends of the plurality of ribs are placed on the footing.
  • the choice of the footing is carried out according to the type of ground and the loads transmitted by the transition structure.
  • the footing can adopt several forms. For instance, shoes, small independent slabs wherein the number of slabs is equal to the number of ribs of the transition structure), a circumferential ring slab, a piling (or several micro pilings underneath each end of the transition structure or even a combination of a circumferential ring slab (when the number of pilings is higher than the number of ribs of the transition structure.
  • the footing could consist, for instance, of footings that could have the same geometry or be different for at least two ribs.
  • the second end of the of the transition structure is arranged in the footing whilst the rest of the transition structure is in touch with an intermediate element disposed below the lower surface of said transition structure.
  • the intermediate element is a flexible element.
  • the intermediate element is a filling material.
  • the precast foundation structure further comprises a transition footing disposed between the second end of each rib of the transition structure and the footing itself in order to guarantee a smooth transition of the loads from the transition structure to the footing.
  • transition structure The design of both the transition structure and the plinth is structurally governed by stability criteria such as overturning or no-gap (physical separation of lower face of the foundation from the ground) but it is not governed by geotechnical features of the ground. Dimensions of the transition structure depend on the loads coming from the wind turbine (extrem and quasi-permanent loads), the length of the ribs of the transition structure and its weight, and the total weight of the wind tower.
  • footings depend on the extreme loads, the size of the transition structure and also the strength and the elastic properties of the ground.
  • each first end of the plurality of ribs is intended to be joined to an adjacent first end of an adjacent rib, in order to form a monolithic element.
  • the joints between the first ends of the plurality of ribs can be performed by means of different methods: by filling the joints with concrete or grouting, by using starter rebars and/or shear keys, etc.
  • the first end of the plurality of ribs constitute the at least a plinth comprising a surface wherein a tower of the wind turbine is intended to be coupled.
  • the invention also relates to an assembly method of a wind turbine wherein the wind turbine comprises a precast foundation structure that comprises:
  • the step of pouring the concrete on the ground in order to manufacture the footing is carried out taking into account the dimensions of the footing, that are dependent on the features of the ground but are independent of the loads transmitted by the tower.
  • the precast foundation structure for a wind turbine comprises:
  • the footing (1) comprises dimensions that are dependent on the features of the ground (2) but are independent of loads transmitted by the tower of the wind turbine.
  • each one of the plurality of ribs (4) comprises a first end (11) defining at least partially the surface (5) or the vertical projection of the surface (5) wherein a tower of the wind turbine is intended to be coupled, and a second (12) end arranged in the footing (1).
  • each first end (11) of each one of the plurality of ribs (4) defining at least partially the surface (5) wherein a tower of the wind turbine is intended to be coupled is itself a sector of a precast plinth.
  • each first end (11) defining at least partially the vertical projection of the surface (5) of the tower of the wind turbine is intended to be coupled is itself a sector of a precast transition structure and at least a plinth (3) comprising a surface (5) wherein a tower of the wind turbine is intended to be coupled is disposed above said precast transition structure.
  • the plurality of ribs (4) are precast concrete ribs comprising a central beam (13) disposed between the first end (11) and the second end (12). More preferably, the central beam (13) is made of reinforced concrete or prestressed or post-stressed concrete.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Wind Motors (AREA)
EP19383224.3A 2019-12-31 2019-12-31 Vorgefertigte fundamentstruktur für eine windturbine, windturbine und montageverfahren einer windturbine Pending EP3845712A1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19383224.3A EP3845712A1 (de) 2019-12-31 2019-12-31 Vorgefertigte fundamentstruktur für eine windturbine, windturbine und montageverfahren einer windturbine
BR102020026969-0A BR102020026969A2 (pt) 2019-12-31 2020-12-29 Estrutura de alicerce pré-fabricada para uma turbina eólica, turbina eólica e método de montagem de uma turbina eólica
MX2021000054A MX2021000054A (es) 2019-12-31 2021-01-06 Estructura de cimentación prefabricada para un aerogenerador, aerogenerador y método de ensamblaje de un aerogenerador.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19383224.3A EP3845712A1 (de) 2019-12-31 2019-12-31 Vorgefertigte fundamentstruktur für eine windturbine, windturbine und montageverfahren einer windturbine

Publications (1)

Publication Number Publication Date
EP3845712A1 true EP3845712A1 (de) 2021-07-07

Family

ID=69167608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19383224.3A Pending EP3845712A1 (de) 2019-12-31 2019-12-31 Vorgefertigte fundamentstruktur für eine windturbine, windturbine und montageverfahren einer windturbine

Country Status (3)

Country Link
EP (1) EP3845712A1 (de)
BR (1) BR102020026969A2 (de)
MX (1) MX2021000054A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113668596A (zh) * 2021-09-05 2021-11-19 弓健 装配式预制铁塔基础

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002097651A (ja) * 2000-09-25 2002-04-02 Kajima Corp 構造物基礎
WO2004101898A2 (de) * 2003-05-13 2004-11-25 Aloys Wobben Fundament für eine windenergieanlage
EP2064393B1 (de) 2006-09-21 2012-07-04 Ahmed Phuly Engineering & Consulting, Inc. Teilweise vorgefertigtes modulares fundamentsystem
WO2017141098A1 (en) * 2016-02-18 2017-08-24 Holcim Technology Ltd Foundation for a wind mill
US9938685B2 (en) 2015-07-15 2018-04-10 Rute Foundation Systems, Inc. Beam and pile anchor foundation for towers
ES2701605A1 (es) * 2018-12-03 2019-02-25 Hws Concrete Towers S L Cimentacion para torres eolicas

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002097651A (ja) * 2000-09-25 2002-04-02 Kajima Corp 構造物基礎
WO2004101898A2 (de) * 2003-05-13 2004-11-25 Aloys Wobben Fundament für eine windenergieanlage
EP2064393B1 (de) 2006-09-21 2012-07-04 Ahmed Phuly Engineering & Consulting, Inc. Teilweise vorgefertigtes modulares fundamentsystem
US9938685B2 (en) 2015-07-15 2018-04-10 Rute Foundation Systems, Inc. Beam and pile anchor foundation for towers
WO2017141098A1 (en) * 2016-02-18 2017-08-24 Holcim Technology Ltd Foundation for a wind mill
ES2701605A1 (es) * 2018-12-03 2019-02-25 Hws Concrete Towers S L Cimentacion para torres eolicas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113668596A (zh) * 2021-09-05 2021-11-19 弓健 装配式预制铁塔基础

Also Published As

Publication number Publication date
BR102020026969A2 (pt) 2021-08-24
MX2021000054A (es) 2021-07-01

Similar Documents

Publication Publication Date Title
RU2714745C1 (ru) Фундамент для ветроэнергетической установки
RU2720210C2 (ru) Фундамент для ветроэнергетической установки
US8876486B2 (en) Marine wind turbine having a pylon vertically adjusted by setting
EP2256338B1 (de) Fundament, insbesondere für eine Windturbine, und Windturbine
US11976432B2 (en) Foundation for wind turbine towers
JP6638141B2 (ja) 塔状構造物の基礎構造
EP3467304B1 (de) Turmabschnitts zum automatischen anheben einer windturbine und verfahren zum automatischen anheben dafür
EP3259405B1 (de) Verfahren zum bau eines fundaments mit einem stahl-monopile und einem betonteil sowie zugehöriges fundament für bauarbeiten
JP2010065454A (ja) 塔状構造物の基礎構造
DK2886723T3 (en) Ribbed foundation for superstructures and method of making the foundation.
JP6638140B2 (ja) 塔状構造物の基礎構造
US20210348597A1 (en) Pile foundation and construction method of pile foundation
KR20080083575A (ko) 탑형상 구조물의 기초 구조
EP3845712A1 (de) Vorgefertigte fundamentstruktur für eine windturbine, windturbine und montageverfahren einer windturbine
CN204738307U (zh) 一种部分嵌固型筏板式风力发电机基础
EP4079970A1 (de) Betonfundament für einen windturbinenturm und verfahren zu seiner installation
JP5002045B2 (ja) 建物の基礎構造
JP6569103B2 (ja) 塔状構造物の基礎構造
CN217712818U (zh) 一种风电塔筒基础及风力发电装置
RU2794278C2 (ru) Фундамент для башен ветряных турбин
EP4263952A1 (de) System, herstellungsverfahren und vorgefertigte fundamentstruktur für eine windturbine
CN211872968U (zh) 一种现场浇注的预应力混凝土桩基础
EP3401445B1 (de) Verankerungsabschnitt für eine fundamentstruktur
JP4605641B2 (ja) 建物の基礎構造及びその構築方法
RU2021114631A (ru) Фундамент для башен ветряных турбин

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

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: 20211229

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

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230530