NO329946B2 - Foundation for an offshore wind turbine generator as well as methods for building and installing the foundation - Google Patents
Foundation for an offshore wind turbine generator as well as methods for building and installing the foundation Download PDFInfo
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- NO329946B2 NO329946B2 NO20083537A NO20083537A NO329946B2 NO 329946 B2 NO329946 B2 NO 329946B2 NO 20083537 A NO20083537 A NO 20083537A NO 20083537 A NO20083537 A NO 20083537A NO 329946 B2 NO329946 B2 NO 329946B2
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- tower structure
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- 238000000034 method Methods 0.000 title claims description 5
- 238000010276 construction Methods 0.000 claims description 37
- 238000009434 installation Methods 0.000 claims description 14
- 239000011150 reinforced concrete Substances 0.000 claims description 9
- 239000011343 solid material Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
- E02B17/025—Reinforced concrete structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
- E02B17/027—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
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/22—Foundations specially adapted for wind motors
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0039—Methods for placing the offshore structure
- E02B2017/0047—Methods for placing the offshore structure using a barge
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
- E02B2017/0065—Monopile structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
- E02B2017/0073—Details of sea bottom engaging footing
- E02B2017/0082—Spudcans, skirts or extended feet
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0091—Offshore structures for wind turbines
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Wind Motors (AREA)
Description
Foreliggende oppfinnelse angår et fundament for en vindturbingenerator til havs og en fremgangsmåte for bygging og installasjon av fundamentet for en slik vindturbingenerator som plasseres fortrinnsvis på havdyp over 45 m. The present invention relates to a foundation for a wind turbine generator at sea and a method for building and installing the foundation for such a wind turbine generator which is placed preferably at a sea depth of more than 45 m.
Det er tidligere kjent å plassere vindturbingeneratorer eller vindmøller til havs på vanndyp opp til 45 m. Fagverkskonstruksjoner i stål slik som "jackets" har vært benyttet som fundamentkonstruksjon. Slike fundamentkonstruksjoner vil normalt bygges på land, slepes ut til plasseringsstedet, senkes ned og forankres til bunnen for eksempel ved pæling. Vindmølle med tårnkonstruksjon, generator og rotorblader vil så monteres på fundamentkonstruksjonen på installasjonsstedet til havs. It is previously known to place wind turbine generators or windmills at sea in water depths of up to 45 m. Steel truss constructions such as "jackets" have been used as foundation construction. Such foundation structures will normally be built on land, towed out to the location, lowered and anchored to the bottom, for example by piling. Wind turbine with tower structure, generator and rotor blades will then be mounted on the foundation structure at the offshore installation site.
Slike jackets vil, som omtalt ovenfor, fraktes til installasjonsstedet og plasseres der hvoretter vindmølletårnet etc. monteres på jacketen til havs. Denne fremgangsmåten vil kreve omfattende arbeid til havs, hvilket er en fordyrende faktor da arbeid til havs er vesentlig mer kostbart enn arbeid på eller ved land. Et annet alternativ er at jacketen og vindmøllekonstruksjonen settes sammen på land, lekter etc. og fraktes til feltet ved hjelp av spesielle installasjonsfartøy. Dette vil imidlertid også bli en meget kostbar operasjon. Such jackets will, as mentioned above, be transported to the installation site and placed there, after which the wind turbine tower etc. will be mounted on the jacket at sea. This method will require extensive work at sea, which is an increasing factor as work at sea is significantly more expensive than work on or near land. Another alternative is for the jacket and the wind turbine structure to be assembled on land, barges etc. and transported to the field using special installation vessels. However, this will also be a very expensive operation.
Ved fundamentering av vindmøller på større havdyp, fortrinnsvis over 45 m, må man ta hensyn til en kombinasjon av et stort antall belastninger som vil virke på konstruksjonen, som for eksempel vind, bølger, strøm og jordskjelv. Egenperioder for fundament og vindmøller og utmatting etc. skaper også store utfordringer ved beregning og utforming (design) av slike konstruksjoner. When laying foundations for wind turbines at greater sea depths, preferably over 45 m, account must be taken of a combination of a large number of loads that will act on the structure, such as wind, waves, currents and earthquakes. Individual periods for foundations and wind turbines and fatigue etc. also create major challenges when calculating and designing (design) such structures.
Et mål med foreliggende oppfinnelse er derfor å tilveiebringe et fundament An aim of the present invention is therefore to provide a foundation
for en vindturbingenerator som løser problemet med hensyn til miljølaster etc. som angitt ovenfor, og at man således oppnår et fundament med høy stivhet og gunstig dynamisk karakteristikk som gir høy levetid av fundamentet og reduserer utmatting i selve mølletårnet. Det skal i denne forbindelse nevnes at vindmøller er sensitiv for a wind turbine generator which solves the problem with regard to environmental loads etc. as indicated above, and that a foundation with high stiffness and favorable dynamic characteristics is thus achieved which gives a long life of the foundation and reduces fatigue in the mill tower itself. In this connection, it should be mentioned that wind turbines are sensitive
for dynamikk og krever lave strukturelle egenperioder som skiller seg fra frekven-sen til selve rotorbladene for å unngå utmatting i ståltårnet samt i selve generato-ren og rotorbladene. Fundamentet skal kunne "overleve" tre-fire møller i sin levetid og har derfor en ytterligere verdi utover selve møllen da vind er en ressurs som kommer til å holde seg "i all fremtid". Fundamentet skal såldes kunne gjenbrukes for flere møller. for dynamics and requires low structural natural periods that differ from the frequency of the rotor blades themselves to avoid fatigue in the steel tower as well as in the generator and rotor blades themselves. The foundation must be able to "survive" three or four turbines in its lifetime and therefore has an additional value beyond the turbine itself, as wind is a resource that will last "forever". The foundation must be sold so that it can be reused for several mills.
Et annet mål er at fundamentet skal bygges og sammenstilles med vind-mølletårn, generator og rotor i beskyttet farvann nær land og skal kunne slepes stabilt til installasjonsstedet ferdig sammenstilt. Ballast av fast materiale skal også tilføres konstruksjonen fortrinnsvis før utslep til installasjonsstedet, hvor kun vann-ballast er nødvendig for nedsenking av konstruksjonen på installasjonsstedet. Arbeider til havs er vesentlig mer kostbart enn på land eller nær land, slik at kostbart arbeide til havs skal reduseres til et minimum. Another goal is that the foundation must be built and assembled with wind turbine tower, generator and rotor in protected waters close to land and must be able to be towed stably to the installation site when fully assembled. Ballast of solid material must also be added to the construction preferably before discharge to the installation site, where only water ballast is required for submerging the construction at the installation site. Work at sea is significantly more expensive than on land or near land, so that expensive work at sea must be reduced to a minimum.
Et tredje mål er at fundamentet skal tilpasses grunnforholdene på installasjonsstedet. A third objective is that the foundation must be adapted to the ground conditions at the installation site.
Et fjerde mål er at fundamentet skal ha relativt liten vekt, det skal være enkelt å konstruere, kunne tilpasses dypgangen på byggestedet og egne seg for serieproduksjon av mange vindmøller for vindmølleparker til havs og være kost-nadseffektiv i forhold til eksisterende løsninger. A fourth goal is that the foundation should have relatively little weight, it should be easy to construct, be able to adapt to the draft on the construction site and be suitable for serial production of many wind turbines for offshore wind farms and be cost-effective compared to existing solutions.
Et femte mål er at fundament med eller uten mølletårn skal kunne fjernes og taues til land ved deballastering av fundamentet. A fifth goal is that foundations with or without mill towers must be able to be removed and towed to shore by deballasting the foundation.
Målene med foreliggende oppfinnelse oppnås ved et fundament for en vindturbingenerator til havs, fortrinnsvis for havdyp over 45 meter, hvor fundamentet i bygge-, transport- og installasjonsfaser er en selvflytende og stabil konstruksjon i armert betong omfattende: - en fundamentkonstruksjon, - en hul, hovedsakelig kjegleformet tårnkonstruksjon anordnet på fundamentkonstruksjonen og med en nedre utvendig diameter mindre enn fundamentkonstruksjonens minste tverrgående dimensjon, idet tårnkonstruksjonens diameter avtar gradvis oppover mot tårnkonstruksjonens øvre del, fundamentkonstruksjonen omfatter en bunnplate med et sentrisk anordnet sylindrisk tårnkonstruksjonsfundament kjennetegnet ved at tårnkonstruksjonsfundamentet videre er anordnet med utvendige og innvendig radielle skråstivere som forløper fra tårnkonstruksjonsfundamentets øvre område og ned mot bunnplaten. The aims of the present invention are achieved by a foundation for a wind turbine generator at sea, preferably for sea depths of over 45 metres, where the foundation in construction, transport and installation phases is a self-flowing and stable construction in reinforced concrete comprising: - a foundation structure, - a hollow, mainly cone-shaped tower structure arranged on the foundation structure and with a lower outer diameter smaller than the smallest transverse dimension of the foundation structure, the diameter of the tower structure decreasing gradually upwards towards the upper part of the tower structure, the foundation structure comprising a bottom plate with a centrically arranged cylindrical tower structure foundation characterized by the fact that the tower structure foundation is further arranged with external and internal radial inclined struts extending from the upper area of the tower construction foundation down towards the base plate.
Foretrukne utførelser av fundamentet er videre utdypet i kravene 2 t.o.m. 6. Preferred executions of the foundation are further elaborated in requirements 2 up to and including 6.
Videre oppnås formålet med oppfinnelsen ved en fremgangsmåte for bygging og installasjon av et fundament for en vindturbingenerator til havs som angitt i hvilket som helst av kravene 1-6, fortrinnsvis for havdyp over 45 m, kjennetegnet ved at: Furthermore, the purpose of the invention is achieved by a method for building and installing a foundation for a wind turbine generator at sea as stated in any of claims 1-6, preferably for sea depths over 45 m, characterized by:
- en fundamentkonstruksjon i armert betong samt nedre del av en hovedsakelig kjegleformet hul tårnkonstruksjon i armert betong, med en nedre utvendig diameter mindre enn fundamentkonstruksjonens minste tverrgående dimensjon støpes i en tørrdokk eller på en lekter, ev. på land og sliskes over på en lekter eller ut på en sliskebane som løper ut i sjøen, - fundamentkonstruksjonen innbefattende nedre del av tårnkonstruksjonen gjøres flytende ved fylling av vann i tørrdokken, ved nedsenkning av lekteren eller ved slisking ut i sjø, - den hovedsakelige kjegleformete tårnkonstruksjonen innbefattende en hovedsakelig sylindrisk øvre del, glidestøpes i flytende tilstand ved ballastering med flytende ballast og/eller ballast av fast materiale, - en sammenkoplingsanordning for vindturbingeneratoren anordnes på tårnkonstruksjonens øvre område, - a foundation structure in reinforced concrete as well as the lower part of a mainly cone-shaped hollow tower structure in reinforced concrete, with a lower outer diameter smaller than the smallest transverse dimension of the foundation structure is cast in a dry dock or on a barge, possibly on land and slid onto a barge or onto a chute that runs out into the sea, - the foundation structure including the lower part of the tower structure is liquefied by filling the dry dock with water, by submerging the barge or by sliding it into the sea, - the mainly cone-shaped the tower structure, including a mainly cylindrical upper part, is slip-cast in a liquid state by ballasting with liquid ballast and/or ballast of solid material, - a connection device for the wind turbine generator is arranged on the upper area of the tower structure,
- vindturbingeneratoren monteres på sammenkoplingsanordningen, - the wind turbine generator is mounted on the connecting device,
- konstruksjonen innbefattende fundamentet og tårnkonstruksjonen ballasteres, taues til installasjonsstedet, senkes ned til havbunnen ved tilførsel av ballast og forbindes med havbunnen. - the structure including the foundation and the tower structure is ballasted, towed to the installation site, lowered to the seabed by supplying ballast and connected to the seabed.
Oppfinnelsen skal nå videre utdypes med henvisning til de vedføyde tegninger, hvor: fig. 1 viser en utførelse av et fundament ifølge oppfinnelsen, og fig. 2 viser fundamentet i fig. 1, men nå i en halvveis avskåret utførelse. The invention will now be further elaborated with reference to the attached drawings, where: fig. 1 shows an embodiment of a foundation according to the invention, and fig. 2 shows the foundation in fig. 1, but now in a half-cut version.
Med henvisning til figurene, består et fundament 1 for en vindturbingenerator til havs av en fundamentkonstruksjon 5 og en hul, hovedsakelig kjegleformet tårnkonstruksjon 15. Tårnkonstruksjonens 15 diameter avtar gradvis oppover mot fundamentets 1 bølgesone og tårnkonstruksjonen 15 er over dette området for-lenget med en hovedsakelig sylindrisk øvre del 20. Tårnkonstruksjonen 15 er i sitt øvre område 22 anordnet med sammenkoplingsanordninger for et mølletårn 25 innbefattende generator og rotorblader. With reference to the figures, a foundation 1 for an offshore wind turbine generator consists of a foundation structure 5 and a hollow, mainly cone-shaped tower structure 15. The diameter of the tower structure 15 gradually decreases upwards towards the wave zone of the foundation 1 and the tower structure 15 is over this area extended by a mainly cylindrical upper part 20. The tower construction 15 is arranged in its upper area 22 with connecting devices for a mill tower 25 including generator and rotor blades.
Fundamentkonstruksjon 5 kan ha en sirkulær, kvadratisk eller enhver annen form. Fundamentkonstruksjon 5 omfatter videre en bunnplate 6 med et sentrisk anordnet sylindrisk tårnkonstruksjonsfundament 8. Det sylindriske tårnkonstruksjonsfundamentet 8 kan videre være anordnet med en innvendig nedoverrettet domkonstruksjon som forløper fra tårnkonstruksjonsfundamentets øvre område. Foundation structure 5 can have a circular, square or any other shape. Foundation construction 5 further comprises a bottom plate 6 with a centrally arranged cylindrical tower construction foundation 8. The cylindrical tower construction foundation 8 can also be arranged with an internally downward-directed dome construction that extends from the upper area of the tower construction foundation.
Bunnplaten 6 er langs sin ytterkant anordnet med vertikale oppadrettede veg- The bottom plate 6 is arranged along its outer edge with vertical upwards
ger 10, hvorved et antall av oppad åpne boks-konstruksjoner 11 er utformet. Boks-konstruksjonene 11 er utformet slik at det er plass til ballast i form av sand eller liknende. Bokskonstruksjonenes utforming er tilpasset slik at fast ballast kan fylles enkelt ovenfra i de åpne kammer. Fundamentkonstruksjonen 5 er videre utformet slik at den kan flyte på meget grunt vann hvilket medfører at det er mulig å bygge fundamentkonstruksjonen i en grunn tørrdokk eller på en nedsenkbar lekter. Ballast av fast materiale skal fortrinnsvis fylles før utslep til feltet for å unngå store ut-gifter forbundet med arbeid offshore. ger 10, whereby a number of upwardly open box constructions 11 are designed. The box constructions 11 are designed so that there is room for ballast in the form of sand or the like. The design of the box structures is adapted so that solid ballast can be easily filled from above in the open chambers. The foundation structure 5 is further designed so that it can float in very shallow water, which means that it is possible to build the foundation structure in a shallow dry dock or on a submersible barge. Ballast of solid material should preferably be filled before discharge to the field to avoid large expenses associated with work offshore.
Fundamentkonstruksjonen 5 er tilpasset grunnforholdene på stedet. Ved faste grunnforhold kan fundamentkonstruksjonen 5 bestå av en flat bunnplate, eventuelt med ribber for å styre kreftene til de sterkeste områder. Ved bløte grunnforhold vil man bruke såkalte skjørt 7 som penetrerer ned i jorda til jordmasser som er fast nok til å motstå påvirkning fra bølger, strøm og vind. The foundation structure 5 is adapted to the ground conditions on site. In case of fixed ground conditions, the foundation structure 5 can consist of a flat bottom plate, possibly with ribs to control the forces to the strongest areas. In soft ground conditions, so-called skirts 7 will be used which penetrate into the soil to soil masses that are firm enough to withstand the effects of waves, currents and wind.
Fundamentet består, som nevnt ovenfor, videre av en kjegleformet tårnkonstruksjon 15 med en sylindrisk øvre del 20. Tårnkonstruksjonen er så slank som mulig for å minimere bølgelaster, men tårnkonstruksjonen skal allikevel gi tilstrek-kelig styrke og stivhet under operasjon samt oppdrift og stabilitet under utslep til feltet. Fundamentet 1 er støpt i armert betong for å oppnå de gode stivhetsegen-skaper, gode utmattingsegenskaper og lang levetid. I det øvre området 22 av tårnkonstruksjonen er det anordnet sammenkoplingsanordninger for et mølletårn 25 som vil være i stål. Sammenkoplingsanordningene kan inkludere muligheter for justering av vertikalitet for mølletårnet 25. The foundation, as mentioned above, further consists of a cone-shaped tower construction 15 with a cylindrical upper part 20. The tower construction is as slim as possible to minimize wave loads, but the tower construction must still provide sufficient strength and rigidity during operation as well as buoyancy and stability during discharge to the field. The foundation 1 is cast in reinforced concrete to achieve good stiffness properties, good fatigue properties and a long service life. In the upper area 22 of the tower construction, connecting devices are arranged for a mill tower 25 which will be made of steel. The coupling devices may include possibilities for adjusting the verticality of the mill tower 25.
Figur 1 og 2 viser en utførelse av fundamentet 1 i følge oppfinnelsen. Det er en hel bunnplate 6 under hele konstruksjonen. Figures 1 and 2 show an embodiment of the foundation 1 according to the invention. There is a whole bottom plate 6 under the whole construction.
Tårnkonstruksjonsfundamentet 8 er forsterket med utvendige og innvendige radielle skråstivere 13 som forløper fra tårnkonstruksjonsfundamentet og ned mot bunnplaten 6. Ballast av fast materiale vil i denne utførelsen av fundamentet 1 være fylt innvendig i tårnkonstruksjonsfundamentet og eventuelt i den nedre del av den kjegleformede tårnkonstruksjon 15. The tower construction foundation 8 is reinforced with external and internal radial inclined struts 13 which extend from the tower construction foundation down towards the bottom plate 6. In this version of the foundation 1, ballast of solid material will be filled inside the tower construction foundation and possibly in the lower part of the cone-shaped tower construction 15.
Bygging av fundamentet 1 vil foregå i to hovedfaser. Først vil fundamentkonstruksjonen 5 i armert betong samt nedre del av den hovedsakelig kjegleformede hule tårnkonstruksjon 15 i armert betong støpes i en tørrdokk eller på lekter, eventuelt på land og sliskes over på en lekter eller ut på en sliskebane som løper ut i sjøen hvoretter fundamentkonstruksjon 5 innebefattende nedre del av tårnkonstruksjonen 15 gjøres flytende ved fylling vann i tørrdokken, ved nedsenkning av lekteren eller ved slisking ut i sjø hvoretter konstruksjonen ankres opp på dypere vann. I den andre hovedfase glidestøpes den hovedsakelige kjegleformede tårnkonstruksjon 15 innbefattende en hovedsakelig sylindrisk øvre del 20 i flytende tilstand ved ballastering med flytende ballast og/eller ballast av fast materiale. Videre anordnes en sammenkoplingsanordning for mølletårnet 25 på tårnkonstruksjonens øvre område 22 hvoretter mølletårnet 25 monteres på sammenkoplingsanordningen og en eller flere vindmøller monteres på mølletårnet. Konstruksjonen innbefattende fundamentet 1 og tårnkonstruksjonen 15 samt vindturbingeneratoren ballasteres til ønskelig dypgang, taues til installasjonsstedet, senkes ned til havbunnen ved tilførsel av ballast (sjøvann) og forbindes med havbunnen. Construction of foundation 1 will take place in two main phases. First, the foundation structure 5 in reinforced concrete as well as the lower part of the mainly cone-shaped hollow tower structure 15 in reinforced concrete will be cast in a dry dock or on a barge, possibly on land and slid onto a barge or out onto a chute that runs out into the sea, after which foundation structure 5 including the lower part of the tower structure 15 is liquefied by filling the dry dock with water, by submerging the barge or by sliding it into the sea after which the structure is anchored in deeper water. In the second main phase, the mainly cone-shaped tower construction 15 including a mainly cylindrical upper part 20 is slip cast in a liquid state by ballasting with liquid ballast and/or ballast of solid material. Furthermore, a coupling device for the mill tower 25 is arranged on the upper area 22 of the tower construction, after which the mill tower 25 is mounted on the coupling device and one or more windmills are mounted on the mill tower. The structure including the foundation 1 and the tower structure 15 as well as the wind turbine generator are ballasted to the desired draft, towed to the installation site, lowered to the seabed by supplying ballast (seawater) and connected to the seabed.
Claims (7)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20083537A NO329946B2 (en) | 2008-08-14 | 2008-08-14 | Foundation for an offshore wind turbine generator as well as methods for building and installing the foundation |
EP09806896A EP2324240A4 (en) | 2008-08-14 | 2009-08-12 | Foundation for an offshore wind turbine generator and method of constructing and installing the foundation |
PCT/NO2009/000285 WO2010019050A1 (en) | 2008-08-14 | 2009-08-12 | Foundation for an offshore wind turbine generator and method of constructing and installing the foundation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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NO20083537A NO329946B2 (en) | 2008-08-14 | 2008-08-14 | Foundation for an offshore wind turbine generator as well as methods for building and installing the foundation |
Publications (3)
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NO20083537L NO20083537L (en) | 2010-02-15 |
NO329946B1 NO329946B1 (en) | 2011-01-31 |
NO329946B2 true NO329946B2 (en) | 2011-01-31 |
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NO20083537A NO329946B2 (en) | 2008-08-14 | 2008-08-14 | Foundation for an offshore wind turbine generator as well as methods for building and installing the foundation |
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EP (1) | EP2324240A4 (en) |
NO (1) | NO329946B2 (en) |
WO (1) | WO2010019050A1 (en) |
Families Citing this family (23)
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US8458970B2 (en) * | 2008-06-13 | 2013-06-11 | Tindall Corporation | Base support for wind-driven power generators |
CN102561521A (en) * | 2010-12-14 | 2012-07-11 | 贵阳铝镁设计研究院有限公司 | Bolt deviation correction method |
CN102268879B (en) * | 2011-05-25 | 2015-12-09 | 江苏道达海上风电工程科技有限公司 | The foundation structure of offshore anemometer tower and mounting method thereof |
GB2501123B (en) * | 2012-04-13 | 2014-09-10 | Laing O Rourke Plc | Foundation structures |
US9522716B2 (en) | 2012-06-28 | 2016-12-20 | Alstom Renewable Technologies | Floating offshore wind turbine with damping structure |
CN102777335B (en) * | 2012-07-23 | 2014-02-26 | 上海交通大学 | Mounting device for offshore wind generating set based on six-dimensional intelligent mechanical legs |
FI20126086L (en) * | 2012-10-18 | 2014-04-19 | Stx Finland Oy | OFFSHORE STRUCTURE |
CN106061834B (en) | 2014-02-06 | 2019-05-07 | 缅因大学系统委员会 | The method of mooring floatation type wind turbine platform |
NL2012573B1 (en) * | 2014-04-07 | 2016-03-08 | Koninklijke Bam Groep Nv | Gravity based foundation for an offshore installation. |
ES2524840B1 (en) * | 2014-06-06 | 2015-09-08 | Esteyco S.A.P. | Foundation system for towers and installation procedure of the foundation system for towers |
NO341700B1 (en) | 2015-01-28 | 2018-01-02 | Quick Response As | Liquid wind turbines |
ES2593263B1 (en) * | 2015-06-05 | 2017-09-12 | Iberdrola Renovables Energía, S.A. | Gravity foundation system for the installation of wind turbines or offshore facilities and procedure for the installation of a foundation system for wind turbines or offshore facilities |
ES2617991B1 (en) | 2017-02-14 | 2018-03-27 | Berenguer Ingenieros S.L. | MARITIME STRUCTURE FOR THE FOUNDATION BY GRAVITY OF BUILDINGS, FACILITIES AND AEROGENERATORS IN THE MARINE ENVIRONMENT |
JP6800493B2 (en) * | 2018-08-02 | 2020-12-16 | 中村物産有限会社 | Submarine installation type foundation structure |
ES2785802B2 (en) * | 2019-04-05 | 2021-05-19 | Esteyco S A | INSTALLATION PROCEDURE FOR A TORRE MAR INTO WIND GENERATOR |
CN110158640A (en) * | 2019-06-12 | 2019-08-23 | 长江勘测规划设计研究有限责任公司 | Constructing structure and construction method are built in offshore wind farm bucket foundation water |
CN110331734B (en) * | 2019-07-05 | 2021-01-12 | 天津大学前沿技术研究院 | Cylindrical foundation structure pre-excavation offshore construction method |
EP3767035A1 (en) * | 2019-07-18 | 2021-01-20 | Siemens Gamesa Renewable Energy A/S | Method for assembling an offshore wind turbine, tower foundation for an offshore wind turbine and offshore wind turbine |
CN111764395A (en) * | 2020-07-06 | 2020-10-13 | 华电重工股份有限公司 | Installation method of cylindrical foundation |
GB2604909A (en) * | 2021-03-18 | 2022-09-21 | Subsea 7 Ltd | Subsea foundations |
WO2023006955A1 (en) * | 2021-07-30 | 2023-02-02 | Lak Mohammad Amin | Gravity based foundation |
JP7492283B1 (en) | 2022-11-24 | 2024-05-29 | 株式会社四国Ga | Method for constructing bottom-fixed offshore mounting system, bottom-fixed offshore mounting system, and offshore wind power generation device |
GB2625292A (en) * | 2022-12-12 | 2024-06-19 | Aker Solutions As | Method and associated apparatus |
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US3754403A (en) * | 1972-02-09 | 1973-08-28 | Texaco Inc | Offshore marine structure embodying anchor pile means |
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US5316413A (en) * | 1992-09-28 | 1994-05-31 | Chevron Research And Technology Company | Offshore double cone structure |
FI107184B (en) * | 1999-11-11 | 2001-06-15 | Asko Fagerstroem | Procedure and arrangement for installing an offshore wind turbine at sea and / or retrieving it from the sea and an offshore wind turbine |
ATE467551T1 (en) * | 2001-08-30 | 2010-05-15 | Rund Stahl Bau Gmbh & Co | FLOATING FOUNDATION FOR A STRUCTURE RISING OVER THE WATER SURFACE |
ATE272525T1 (en) * | 2002-02-14 | 2004-08-15 | Rund Stahl Bau Gmbh & Co | METHOD FOR LOWERING A FLOATING BODY OF A FLOAT FOUNDATION |
ITBA20020047A1 (en) * | 2002-12-17 | 2004-06-18 | Enertec Aktiegesellschaft Ag | METHOD OF REALIZATION OF A SUBMERSIBLE PUSH-PLATFORM LOCKED FOR THE PRODUCTION OF ELECTRICITY FROM THE WIND IN THE OPEN SEA AND OF MARICULTURE PRODUCTS |
US7234409B2 (en) * | 2003-04-04 | 2007-06-26 | Logima V/Svend Erik Hansen | Vessel for transporting wind turbines, methods of moving a wind turbine, and a wind turbine for an off-shore wind farm |
EP2163691B1 (en) * | 2005-10-21 | 2016-03-09 | Dredging International N.V. | Device and method for offshore mounting for electricity-generating wind-turbine |
DE102006002780B4 (en) * | 2006-01-20 | 2011-10-27 | Tiefbau-Gmbh "Unterweser" | Method for producing a hydraulic structure |
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2008
- 2008-08-14 NO NO20083537A patent/NO329946B2/en active IP Right Review Request
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2009
- 2009-08-12 WO PCT/NO2009/000285 patent/WO2010019050A1/en active Application Filing
- 2009-08-12 EP EP09806896A patent/EP2324240A4/en not_active Withdrawn
Also Published As
Publication number | Publication date |
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EP2324240A1 (en) | 2011-05-25 |
EP2324240A4 (en) | 2012-04-25 |
WO2010019050A1 (en) | 2010-02-18 |
NO20083537L (en) | 2010-02-15 |
NO329946B1 (en) | 2011-01-31 |
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