DK174190B1 - Foundation for a windmill and procedure for installation hereof - Google Patents
Foundation for a windmill and procedure for installation hereof Download PDFInfo
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- DK174190B1 DK174190B1 DK200000612A DKPA200000612A DK174190B1 DK 174190 B1 DK174190 B1 DK 174190B1 DK 200000612 A DK200000612 A DK 200000612A DK PA200000612 A DKPA200000612 A DK PA200000612A DK 174190 B1 DK174190 B1 DK 174190B1
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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
- Y02E10/728—Onshore wind turbines
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i DK 174190 B1in DK 174190 B1
Opfindelsen angår et fundament til understøtning af et tårn til en vindmølle, hvor fundamentet omfatter en ved en midterakse for fundamentet beliggende pille-skaftdel og en cirkelringformet underdel med større 5 yderdimensioner end pilleskaftdelen, hvor underdelen er sammensat af en flerhed af præfabrikerede elementer til dannelse af en monteret tilstand for fundamentet, hvor nævnte elementer omfatter et første sæt elementer, der hovedsagelig strækker sig fra pilleskaftdelen 10 til periferien af underdelen, og et andet sæt elementer, der strækker sig langs underdelens periferi, og hvor i det mindste elementerne i nævnte andet sæt er spændt sammen i underdelens omkredsretning.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a foundation for supporting a tower for a wind turbine, the foundation comprising a pillar shaft portion located at a center axis and a circular annular base having greater outer dimensions than the pillar shaft portion, the base being composed of a plurality of prefabricated elements to form a mounted condition of the foundation, wherein said elements comprise a first set of elements extending substantially from the pillar shaft portion 10 to the periphery of the base, and a second set of elements extending along the periphery of the base, and wherein at least the elements of said second set are clamped together in the perimeter of the lower part.
Sådanne fundamenter, der blandt andet kendes fra 15 DE offentliggørelsesskrift nr. 44 32 800, er traditionelt blevet udført som armerede betonblokke, som afhængig af den endelige beliggenhed for vindmøllen og transportforholdene hertil støbes på stedet eller leveres i form af en præfabrikeret enhed.Such foundations, known from 15 DE Publication No. 44 32 800, among other things, have traditionally been made as reinforced concrete blocks which, depending on the final location of the wind turbine and its transport conditions, are cast on site or delivered in the form of a prefabricated unit.
20 Af hensyn til transportmæssige og produktionsmæs sige forhold har der imidlertid været et ønske om at opbygge sådanne fundamenter af præfabrikerede enkeltdele der samles til det færdige fundament.20 However, in the interests of transport and production, there has been a desire to build such foundations of prefabricated individual parts that are assembled into the finished foundation.
Et sådant fundament kendes fra det internationale 25 offentliggørelsesskrift nr. WO 99/43956. Det i dette skrift anviste fundament har en underdel der er opbygget af i det væsentlige ensartet udformede, cirkeludsnit formede elementer og en oven på underdelen placeret pilleskaftdel, der er opbygget af på hinanden 30 placerede rørstykker. De cirkeludsnitformede elementer er ved deres yderside holdt sammen i det lodrette plan af en not-fjederlignende samling og ved deres inderside af et ringformet element. I hvert af de cirkeludsnitformede elementer er der yderligere udført radialt 35 forløbende passager til placering af kabler, hvis 2 DK 174190 B1 ender fastgøres ved hhv. periferien af hvert element og det ringformede element.Such a foundation is known from International Publication No. WO 99/43956. The foundation disclosed in this specification has a lower part which is made up of substantially uniformly shaped circular sectional elements and a pillar shaft part located on top of the lower part, which is made up of mutually arranged tubes. The circular sectional elements are held at their outside together in the vertical plane of a groove-like joint and at the inside of an annular element. In each of the circular sectional elements there are further radially extending passageways for the placement of cables, the ends of which are fixed at, respectively. the periphery of each element and the annular element.
Selvom dette fundament gør det muligt at tilvejebringe den ønskede præfabrikation af de enkelte ele-5 menter har denne udførelse imidlertid nogle styrkemæssige ulemper, idet belastningen hidrørende fra vindmølletårnet i stor udstrækning optages i de skråt forløbende bjælkepartier, som udgør en del af de cirkeludsnitformede elementer. Denne belastning vil 10 give anledning til en asymmetrisk spændingsfordeling og medføre indbyrdes varierende udbøjning af blandt andet disse bjælkepartier i de forskellige cirkelud-snitformede elementer.However, while this foundation makes it possible to provide the desired prefabrication of the individual elements, this embodiment has some strength disadvantages, the load resulting from the wind turbine tower being largely absorbed in the inclined beam portions which form part of the circular sectional elements. This load will give rise to an asymmetric stress distribution and will cause varying deflection of, among other things, these beam sections in the various circular sectional elements.
Fra DK brugsmodelansøgning nr. 1998 00234 kendes 15 et fundament af den indledningsvis nævnte art, hvor et antal ribbeelementer er anbragt radielt i underdelen af fundamentet, og hvor ribbeelementerne sammenholdes af et antal randelementer. Dette element er behæftet med lignende styrkemæssige ulemper, som det er tilfæl-20 det i ovennævnte WO-skrift.From DK Utility Model Application No. 1998 00234, 15 is known a foundation of the kind mentioned at the outset, in which a number of rib elements are arranged radially in the lower part of the foundation and where the rib elements are held together by a number of edge elements. This element suffers from similar strength disadvantages as is the case in the above WO publication.
På denne baggrund er det hensigten med opfindelsen at tilvejebringe et fundament af den indledningsvis angivne art, hvorved der opnås forbedrede og tilfredsstillende styrke- og holdbarhedsegenskaber for 25 konstruktionen.In the light of the foregoing, it is an object of the invention to provide a foundation of the kind set forth above, thereby providing improved and satisfactory strength and durability properties for the structure.
Denne hensigt nås med et fundament, der er ejendommeligt ved, at nævnte første sæt elementer er udformet som et antal opadtil åbne kasseformede elementer, der omfatter to sidevægge, en i det væsentlige 30 cirkelbueformet indervæg, en i det væsentlige cirkelbueformet ydervæg og en bundplade, og som er beliggende i indbyrdes afstand i underdelens omkredsretning, og nævnte andet sæt elementer indbefatter et antal i det væsentlige cirkelbueformede vægelementer, der 35 strækker sig i omkredsretningen mellem sidevæggene af 3 DK 174190 B1 hosliggende kasseformede elementer i nævnte første sæt, og underdelen yderligere omfatter et tredje sæt elementer indbefattende et antal hovedsagelig pladeformede bundelementer med i det væsentlige cirkelbue-5 formet yderkant anbragt mellem sidevæggene af hosliggende kasseformede elementer i nævnte første sæt, idet nævnte sammenspænding i underdelens omkredsretning langs periferien heraf er tilvejebragt for elementerne i nævnte første og andet sæt, at nævnte pilleskaftdel 10 er sammensat af en flerhed af præfabrikerede elementer af beton og er placeret radialt inden for inderkanten eller indersiden af underdelens elementer, med ydersiden af pilleskaftdelen i anlæg mod indersiden af underdelen, og at sidevæggene i hvert element i nævnte 15 første sæt elementer hovedsagelig strækker sig parallelt med underdelens diagonalretning, og de kasseformede elementer i nævnte første sæt er placeret parvis over for hinanden i underdelens diagonalretning.This object is achieved by a foundation which is characterized in that said first set of elements is formed as a plurality of upwardly open box-shaped elements comprising two side walls, a substantially circular arcuate inner wall, a substantially circular arcuate outer wall and a bottom plate, and spaced apart in the circumferential direction of the lower part, and said second set of elements includes a plurality of substantially circular arcuate elements extending in the circumferential direction between the side walls of adjacent box-shaped elements in said first set, and the lower part further comprises a third set of elements including a plurality of substantially plate-shaped bottom elements having substantially circular outer edge arranged between the sidewalls of adjacent box-shaped elements in said first set, said clamping in the circumferential direction of the base along the periphery thereof provided for the elements of said f first and second sets, said pellet shaft portion 10 is composed of a plurality of prefabricated elements of concrete and located radially within the inner edge or inside of the base members, with the outside of the pile shaft member abutting against the inside of the base member, and the side walls of each member of the said first set of elements extending substantially parallel to the diagonal direction of the base member, and the box-shaped elements of said first set being positioned in pairs opposite each other in the diagonal direction of the base member.
Ved kombinationen af de forskelligt udformede 20 elementer i underdelen og den særlige udformning og placering af de kasseformede elementer samt placeringen af pilleskaftdelen radialt inden for underdelens elementer, tilvejebringes et fundament, som gør det muligt at opnå særdeles gode stabilitets- samt styrke-25 og holdbarhedsmæssige egenskaber, idet der opnås en god anlægsflade mellem pilleskaftdel og underdel ved de kasseformede elementers indervæg, og kræfter hidrørende fra vindbelastningen vil overføres til og optages i fundamentets underdel. Udformningen af de 30 kasseformede elementer medfører en væsentligt forbedret spændingsfordeling i forhold til tidligere kendte konstruktioner, blandt andet fordi de kasseformede elementers sidevægge giver forøget modstand mod udbøj-ning. De kasseformede elementer fyldes med ballast, 4 DK 174190 B1 hvilket gør at fundamentet kan optage de dimensionsgivende laster efter de nye normer.By combining the differently formed 20 members in the base and the particular design and positioning of the box-shaped elements as well as the position of the pillar shaft radially within the elements of the base, a foundation is provided which enables extremely good stability, strength and durability to be achieved. properties, obtaining a good abutment surface between the pillar shaft portion and bottom portion at the inner wall of the box-shaped elements, and forces resulting from the wind load will be transferred to and absorbed into the bottom portion of the foundation. The design of the 30 box-shaped elements results in a substantially improved voltage distribution over previously known constructions, partly because the box walls of the box-shaped elements provide increased resistance to deflection. The box-shaped elements are filled with ballast, which allows the foundation to absorb the dimensional loads according to the new standards.
Elementerne i det første sæt er fortrinsvis fremstillet af forspændt beton, medens elementerne i 5 det andet og det tredje sæt kan være fremstillet af almindelig jernbeton (slapt armeret beton). Anvendelsen af de forspændte elementer giver ud over en vægt-mæssig besparelse en reduceret revnedannelse og øget levetid for konstruktionen. Selvom elementerne i det 10 andet og tredje sæt ikke er forspændte i sig selv, vil der grundet ringspændingen hidrørende fra den rundtgå-ende sammenspænding imidlertid også opstå en spænding i disse elementer.The elements of the first set are preferably made of prestressed concrete, while the elements of the second and third sets may be made of plain iron concrete (slack reinforced concrete). The use of the prestressed elements gives, in addition to weight saving, a reduced cracking and increased construction life. However, although the elements of the second and third sets are not biased per se, due to the ring tension resulting from the circumferential tension, a tension in these elements will also arise.
Den rundtgående sammenspænding kan hensigtsmæs-15 sigt tilvejebringes ved, at der i ydervæggen af hvert kasseformet element og i hvert vægelement er udformet mindst én og fortrinsvis to passager til dannelse af et tilsvarende antal rundtgående passager til placering af efterspændingskabler i fundamentets montere-20 de tilstand.The circumferential tension can conveniently be provided in that at least one and preferably two passages are formed in the outer wall of each box member and in each wall member to form a corresponding number of circumferential passages for placement of post tensioning cables in the base mounting condition. .
I en foretrukken udførelsesform er der i sidevæggene af hvert kasseformet element udformet mindst én og fortrinsvis to passager til dannelse af et tilsvarende antal gennemgående passager til placering af 25 efterspændingskabler i fundamentets monterede tilstand. Dette indebærer, at underdelen efterspændes i retninger der er parallelle med underdelens radialeller diagonalretning symmetrisk om en akse gennem underdelens midtpunkt.In a preferred embodiment, at least one and preferably two passageways are formed in the sidewalls of each box-shaped member to form a corresponding number of through passages for placing 25 post-tension cables in the mounted state of the foundation. This implies that the lower part is tensioned in directions parallel to the radial or diagonal direction of the lower part symmetrically about an axis through the center of the lower part.
30 I en anden foretrukken udførelsesform omfatter pilleskaftdelen et antal opretstående skalelementer, der for det tilfælde, at pilleskaftdelen er keglestub-formet kan have en varierende krumningsradius i elementets højderetning. Skalelementerne kan endvidere 35 fortrinsvis være fremstillet af forspændt beton.In another preferred embodiment, the pile shaft portion comprises a plurality of upright shell members which, in case the pile shaft portion is cone-shaped, may have a varying radius of curvature in the height direction of the element. Furthermore, the shell elements may preferably be made of prestressed concrete.
5 DK 174190 B1 I en hensigtsmæssig videreudvikling af disse udførelsesformer er der i hvert af nævnte skalelementer udformet mindst én passage til dannelse af et tilsvarende antal rundtgående passager til placering 5 af efterspændingskabler i fundamentets monterede tilstand. Med denne udførelse tilvejebringes et fundament, hvor konstruktionen er forspændt i alle lodrette snit, hvilket reducerer risikoen for brud og revnedannelse betydeligt.In an appropriate further development of these embodiments, at least one of said shell elements is formed at least one passageway to form a corresponding number of circumferential passageways for positioning 5 of the tensioning cables in the mounted state of the foundation. With this embodiment, a foundation is provided where the construction is prestressed in all vertical sections, which significantly reduces the risk of fracture and cracking.
10 I en produktionsmæssigt enkel udførelsesform er passagerne udformet som korrugerede rør.In a simple production embodiment, the passages are designed as corrugated pipes.
Med henblik på yderligere forøgelse af konstruktionens styrke er samlingerne mellem de enkelte elementer støbt.In order to further increase the strength of the structure, the joints between the individual elements are molded.
15 I et andet aspekt ved opfindelsen anvises en fremgangsmåde til montering af et fundament til understøtning af et tårn til en vindmølle, hvor fundamentet omfatter en pilleskaftdel og en underdel med større yderdimensioner end pilleskaftdelen, hvor underdelen 20 og pilleskaftdelen hver især sammensættes af en flerhed af præfabrikerede elementer til dannelse af en monteret tilstand for fundamentet. Fremgangsmåden er ejendommelig ved, at et første sæt elementer i form af et antal opadtil åbne kasseformede elementer omfatten-25 de to sidevægge, en indervæg, en ydervæg og en bundplade placeres i indbyrdes afstand i underdelens omkredsretning, et andet sæt elementer indbefattende et antal vægelementer placeres i omkredsretningen mellem sidevæggene af hosliggende kasseformede elemen-30 ter i nævnte første sæt, og et tredje sæt elementer indbefattende et antal hovedsagelig pladeformede bundelementer placeres mellem sidevæggene af hosliggende kasseformede elementer i nævnte første sæt, at pilleskaftdelens elementer placeres radialt inden for 35 inderkanten eller indersiden af underdelens elementer, 6 DK 174190 B1 med ydersiden af pilleskaftdelen i anlæg mod indersiden af underdelen, og at elementerne i nævnte første og andet sæt spændes sammen i underdelens omkredsretning langs periferien heraf.In another aspect of the invention, there is provided a method of mounting a foundation for supporting a tower for a wind turbine, the foundation comprising a pillar shaft portion and a bottom portion having larger outer dimensions than the pillar shaft portion, wherein the base portion 20 and the pillar shaft portion are each composed of a plurality of prefabricated elements to form a mounted state of the foundation. The method is characterized in that a first set of elements in the form of a number of upwardly open box-shaped elements comprising the two side walls, an inner wall, an outer wall and a bottom plate are spaced apart in the circumferential direction of the base, a second set of elements including a number of wall elements. is placed in the circumferential direction between the side walls of adjacent box-shaped elements in said first set, and a third set of elements including a plurality of substantially plate-shaped bottom members is placed between the side walls of adjacent box-shaped elements in said first set, the elements of the pillar shaft member being radially disposed within the inner edge or the inside of the lower part members, 61 with the outside of the pillar shaft member abutting against the inside of the lower part, and the elements of said first and second sets being clamped together in the circumferential direction of the lower part thereof.
5 Opfindelsen vil i det følgende blive forklaret nærmere ved hjælp af et eksempel på en udførelsesform og under henvisning til den skematiske tegning, hvor fig. 1 viser et eksploderet perspektivbillede af et fundament ifølge opfindelsen, 10 fig. 2 et perspektivbillede af det i fig. 1 viste fundament i monteret tilstand, fig. 3 et billede svarende til fig. 2 og visende skematisk trækning af efterspændingskabler.The invention will now be explained in more detail by way of example of an embodiment and with reference to the schematic drawing, in which fig. 1 is an exploded perspective view of a foundation according to the invention; FIG. 2 is a perspective view of the embodiment of FIG. 1 in the mounted condition, FIG. 3 is a view similar to FIG. 2 and showing schematic drawing of post-tensioning cables.
Det på tegningens fig. 1 og 2 viste og generelt 15 med 1 betegnede fundament er indrettet til understøtning af et ikke-vist tårn til en vindmølle eller lignende konstruktion og omfatter en underdel 2 og en pilleskaftdel 3, hvoraf pilleskaftdelen 3 udgør den del der skal optage vindmøllens tårn.The drawing shown in FIG. 1 and 2, and generally 15, with 1 designated foundation, is adapted to support a non-shown tower for a wind turbine or similar construction and comprises a lower part 2 and a pile shaft part 3, of which the pile shaft part 3 constitutes the part to receive the tower of the wind turbine.
20 Underdelen 2 er i den viste udførelse hovedsage lig cirkelringformet og omfatter et første sæt elementer 4 i form af et antal, i den viste udførelse seks, opadtil åbne kasseformede elementer der hvert har to sidevægge 4a,4b, en indervæg 4c, en ydervæg 4d samt en 25 ikke-vist bundplade. De kasseformede elementer 4 er placeret parvis over for hinanden i underdelens diagonalretning og sidevæggene 4a,4b strækker sig parallelt med underdelens radialretning, dvs. parallelt med diagonalretningen, med en radialt udefra og indefter 30 opadhældende overside, medens indervæggen 4c og ydervæggen 4d i det væsentlige er cirkelbueformede. Mellem hosliggende kasseformede elementer 4 er placeret cirkelbueformede vægelementer 5, der med kantsiderne 5a,5b er indrettet til at ligge an mod sidevæggene 4a 35 og 4b af hosliggende kasseformede elementer 4, nær ved 7 DK 174190 B1 elementernes ydervægge 4d, dvs. ved periferien af underdelen. Radialt inden for hvert vægelement 5 er placeret pladeformede bundelementer 6, der i den viste udførelse er todelte men som lige så vel kunne være 5 udført i ét stykke eller omfatte flere dele. I hver af sidevæggene 4a,4b af de kasseformede elementer 4 er udformet to ikke-viste passager, nemlig én forneden og én foroven i væggen, i form af kor rugerede rør, og i ydervæggen 4d er ligeledes to passager i form af 10 korrugerede rør. Passagerne i ydervæggen 4d er placeret således, at de i fundamentets monterede tilstand er beliggende ud for tilsvarende passager i hvert vægelement 5, hvor der ligeledes er udformet to heller ikke viste passager, én forneden og én foroven, i form 15 af korrugerede rør. Funktionen af disse passager vil blive forklaret senere i forbindelse med beskrivelsen af monteringen af fundamentet.The lower part 2 is substantially circular in the illustrated embodiment and comprises a first set of elements 4 in the form of a number, in the illustrated embodiment six, upwardly open box-shaped elements each having two side walls 4a, 4b, an inner wall 4c, an outer wall 4d as well as a 25 plate not shown. The box-shaped elements 4 are arranged in pairs opposite each other in the diagonal direction of the lower part and the side walls 4a, 4b extend parallel to the radial direction of the lower part, ie. parallel to the diagonal direction, with a radially outside and inwardly upwardly inclined upper face, while the inner wall 4c and the outer wall 4d are substantially arcuate. Between adjacent box-shaped elements 4 are placed circular arc-shaped wall elements 5, which with the edge sides 5a, 5b are arranged to abut against the side walls 4a 35 and 4b of adjacent box-shaped elements 4, close to the outer walls 4d of the elements 4a, ie. at the periphery of the lower part. Radially within each wall element 5 are placed plate-shaped bottom elements 6 which in the embodiment shown are two-part but which could as well be 5 made in one piece or comprise several parts. In each of the sidewalls 4a, 4b of the box-shaped elements 4 are formed two non-shown passages, namely one at the bottom and one at the top of the wall, in the form of corrugated pipes, and in the outer wall 4d are also two passages in the form of 10 corrugated pipes. . The passages in the outer wall 4d are positioned so that in the mounted condition of the foundation they are located next to corresponding passages in each wall element 5, in which two passages not shown, one below and one above, are also formed in the form 15 of corrugated pipes. The function of these passages will be explained later in connection with the description of the mounting of the foundation.
Pilleskaftdelen 3 omfatter et antal, i den viste udførelse seks, opretstående skalelementer 7 der er 20 placeret radialt inden for underdelen 2's elementer 4, 5 og 6. Pilleskaftdelen 3 er i den viste udførelse keglestubformet og det enkelte skalelement 7 har krumningsradius der aftager i elementets højderetning.The pile shaft portion 3 comprises a plurality of upright shell elements 7 shown in the embodiment shown radially within the elements 4, 5 and 6. of the lower part 2. The pellet shaft portion 3 is in the embodiment shown cone-shaped and each shell element 7 has a radius of curvature which decreases in the element height direction.
Som et alternativ kan pilleskaftdelen 3 være cylinder-25 formet eller have en anden geometrisk facon. Hvert skalelement 7 har fire med mellemrum i højderetningen udformede, ikke-viste passager, hvis funktion ligeledes vil blive forklaret i forbindelse med beskrivelsen af monteringen.Alternatively, the pillar shaft portion 3 may be cylindrical or of a different geometric shape. Each shell element 7 has four spaced non-illustrated passageways, the function of which will also be explained in connection with the description of the mounting.
30 De enkelte elementer 4-6 og 7 i hhv. underdelen 2 og pilleskaftdelen 3 er fremstillet som præfabrikerede enheder af beton, hvoraf de kasseformede elementer 4 og skalelementerne 7 er fremstillet af forspændt beton, medens vægelementerne 5 og bundelementerne 6 er 35 fremstillet af jernbeton med slap armering, men også 8 DK 174190 B1 disse elementer 5,6 kan alternativt være fremstillet af forspændt beton.30 The individual elements 4-6 and 7 respectively. the lower part 2 and the pile shaft part 3 are made as prefabricated units of concrete, of which the box-shaped elements 4 and the shell elements 7 are made of prestressed concrete, while the wall elements 5 and the bottom elements 6 are made of iron reinforced concrete, but also 8 Alternatively, 5.6 may be made of prestressed concrete.
I det følgende vil monteringen af fundamentet, herunder trækningen af efterspændingskabler, blive 5 beskrevet under henvisning til blandt andet fig. 3, hvor efterspændingskablerne er vist. Til denne figur skal bemærkes, at disse efterspændingskabler er placeret inde i de enkelte elementer og vil således ikke være synlige i det færdige fundament.In the following, the mounting of the foundation, including the drawing of post-tensioning cables, will be described with reference to, inter alia, fig. 3, where the voltage cables are shown. For this figure, it should be noted that these voltage cables are located within the individual elements and thus will not be visible in the finished foundation.
10 De kasseformede elementer 4 og bundelementerne 6 placeres i indbyrdes korrekt stilling, hvorefter de sammenstøbes. Efterfølgende anbringes vægelementerne 5 langs yderkanten af bundelementerne 6 og mellem de kasseformede elementer 4's sidevægge 4a,4b, hvorefter 15 der støbes i samlingerne. Samlingerne udstøbes med en beton/mørtel, der ud over at opfylde alle krav til betonkvalitet er kompenseret for svind. Under disse operationer holdes passagerne i form af de korrugerede rør i hhv. de kasseformede elementer 4 og vægelemen-20 terne 5 åbne, og der tages højde for, at passagerne i elementerne 4's ydervægge 4d er beliggende ud for passagerne i vægelementerne 5, således at der dannes to rundtgående passager, ligesom det sikres at der dannes gennemgående passager gennem to diametralt over 25 for hinanden beliggende kasseformede elementer 4.10 The box-shaped elements 4 and the bottom elements 6 are placed in mutually correct position and then molded together. Subsequently, the wall elements 5 are placed along the outer edge of the base elements 6 and between the side walls 4a, 4b of the box-shaped elements 4, after which 15 are cast in the joints. The joints are cast with a concrete / mortar that, in addition to meeting all concrete quality requirements, is compensated for shrinkage. During these operations, the passages are held in the form of the corrugated tubes respectively. the box-shaped elements 4 and the wall elements 5 are open, and it is taken into account that the passages in the outer walls 4d of the elements 4 are located adjacent to the passages in the wall elements 5, so that two circumferential passages are formed, as well as ensuring that passages are formed. through two diametrically above 25 adjacent box-shaped elements 4.
Efter samlingen af underdelen 2 monteres pille-skaftdelen 3's skalelementer 7 i underdelen 2's midterafsnit, og samtlige konstruktionens samlinger udstøbes, dvs. også samlingen mellem underdelen 2 og 30 pilleskaftdelen 3. Under denne proces holdes passagerne i hvert skalelement åbne.After the assembly of the lower part 2, the shell elements 7 of the pillar shaft part 3 are mounted in the middle section of the lower part 2 and all the joints of the structure are cast, ie. also the joint between the lower part 2 and the 30 pillar shaft part 3. During this process, the passages in each shell element are kept open.
Ef terspændingskabler af i og for sig kendt art kan nu trækkes i passagerne i de enkelte elementer som skitseret i fig. 3. Efter opspænding og forankring af 35 kablerne injiceres de korrugerede rør med cementmør- 9 DK 174190 B1 tel, dels for at sikre at beton og armering virker sammen, dels for at modvirke korrosion af efterspæn-dingskablerne. Forankringsstederne lukkes efterfølgende med en tilstøbning. Ved opspændingen af efterspæn-5 dingskablet eller -kablerne i den eller de rundtgående passage(r) langs hhv. underdelen 2's og pilleskaftde-len 3's periferi dannes i disse dele en ringspænding, som medfører at de enkelte elementer presses ind i hinanden, hvorved konstruktionen også bliver forspændt 10 i alle lodrette snit, I fundamentets anvendelsessituation vil de efter-spændte kabler foroven i de kasseformede elementers sidevægge optage de trækkræfter der vil forekomme i oversiden af de elementer der er placeret i luvsiden, 15 medens de nedre kabler vil optage trækkræfter i elementer placeret i læsiden.Extension cables of a kind known per se can now be drawn into the passages of the individual elements as outlined in FIG. 3. After clamping and anchoring the 35 cables, the corrugated pipes are injected with cement lubricant, partly to ensure that concrete and reinforcement work together, and partly to counteract corrosion of the tension cables. The anchorages are subsequently closed with a molding. In the tensioning of the tension cable (s) in the circumferential passage (s) along or down, respectively. the periphery of the lower part 2 and the pile shaft part 3 forms in these parts a ring tension which causes the individual elements to be pressed into each other, whereby the structure is also biased 10 in all vertical sections. In the application situation of the foundation, the tensioned cables will be at the top of the box-shaped the side walls of elements absorb the tensile forces that will occur in the upper side of the elements located in the air side, while the lower cables will absorb tensile forces in elements located in the lateral side.
Fundamentet og fremgangsmåden ifølge opfindelsen er i det ovenstående blot blevet beskrevet i forbindelse med ét eksempel på en udførelsesform, men kan 20 selvsagt varieres inden for rammen af de efterfølgende krav. Således kan antallet af elementer i hhv. underdelen og pilleskaftdelen varieres, ligesom den nøjagtige udformning af elementerne kan varieres. Endvidere kan antallet til passager til placering af efterspæn-25 dingskabler og beliggenheden heraf varieres tilsvarende .The foundation and method of the invention have only been described above in connection with one example of one embodiment, but can of course be varied within the scope of the following claims. Thus, the number of elements in respectively. the lower part and the pile shaft part are varied, as can the exact design of the elements. Furthermore, the number of passageways for placing tension cables and the location thereof can be varied accordingly.
Claims (13)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK200000612A DK174190B1 (en) | 2000-04-12 | 2000-04-12 | Foundation for a windmill and procedure for installation hereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK200000612A DK174190B1 (en) | 2000-04-12 | 2000-04-12 | Foundation for a windmill and procedure for installation hereof |
| DK200000612 | 2000-04-12 |
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| Publication Number | Publication Date |
|---|---|
| DK200000612A DK200000612A (en) | 2001-09-10 |
| DK174190B1 true DK174190B1 (en) | 2002-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK200000612A DK174190B1 (en) | 2000-04-12 | 2000-04-12 | Foundation for a windmill and procedure for installation hereof |
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| DK (1) | DK174190B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004101898A2 (en) * | 2003-05-13 | 2004-11-25 | Aloys Wobben | Foundation for a wind energy plant |
| WO2005095792A1 (en) * | 2004-04-02 | 2005-10-13 | Aloys Wobben | Method for erecting a tower |
| WO2008119878A1 (en) * | 2007-03-30 | 2008-10-09 | Rautaruukki Oyj | Foundation arrangement |
| US8359798B2 (en) | 2008-11-03 | 2013-01-29 | Siemens Aktiengesellschaft | Foundation particularly for a wind turbine and wind turbine |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004017008B4 (en) | 2004-04-02 | 2009-10-22 | Aloys Wobben | Method for erecting a tower |
| WO2010138978A2 (en) * | 2009-05-05 | 2010-12-02 | Ahmed Phuly Engineering & Consulting, Inc. | Fatigue resistant foundation |
| US20110061321A1 (en) * | 2006-09-21 | 2011-03-17 | Ahmed Phuly | Fatigue reistant foundation system |
| US9347197B2 (en) * | 2006-09-21 | 2016-05-24 | Ahmed Phuly | Foundation with slab, pedestal and ribs for columns and towers |
| WO2008036934A2 (en) * | 2006-09-21 | 2008-03-27 | Ahmed Phuly | Partially prefabricated modular foundation system |
| US9096985B1 (en) * | 2006-09-21 | 2015-08-04 | Ahmed Phuly | Foundation with slab, pedestal and ribs for columns and towers |
| CN102493478A (en) * | 2011-12-16 | 2012-06-13 | 浙江海洋学院 | Novel gravity offshore wind power foundation device |
| ES2548297B9 (en) * | 2014-02-18 | 2021-01-15 | Inneo Torres Sl | Prefabricated footing for wind towers |
| AT517959B1 (en) * | 2016-02-18 | 2017-06-15 | Holcim Technology Ltd | Foundation for a wind turbine |
| AT517958B1 (en) * | 2016-02-18 | 2017-06-15 | Holcim Technology Ltd | Foundation for a wind turbine |
| CN108729465A (en) * | 2018-05-31 | 2018-11-02 | 东北电力大学 | A kind of the assembled tower crane and its building method prefabricated based on modularization |
| AT522250A1 (en) | 2019-02-28 | 2020-09-15 | Holcim Technology Ltd | Foundation for a wind turbine |
-
2000
- 2000-04-12 DK DK200000612A patent/DK174190B1/en not_active IP Right Cessation
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004101898A2 (en) * | 2003-05-13 | 2004-11-25 | Aloys Wobben | Foundation for a wind energy plant |
| WO2004101898A3 (en) * | 2003-05-13 | 2005-01-06 | Aloys Wobben | Foundation for a wind energy plant |
| EP1631722A2 (en) * | 2003-05-13 | 2006-03-08 | Aloys Wobben | Foundation for a wind energy plant |
| CN100513706C (en) * | 2003-05-13 | 2009-07-15 | 艾劳埃斯·乌本 | Foundation for a wind power installation |
| WO2005095792A1 (en) * | 2004-04-02 | 2005-10-13 | Aloys Wobben | Method for erecting a tower |
| AU2005229135B2 (en) * | 2004-04-02 | 2010-12-16 | Aloys Wobben | Method for erecting a tower |
| US9206617B2 (en) | 2004-04-02 | 2015-12-08 | Aloys Wobben | Tower and foundation |
| WO2008119878A1 (en) * | 2007-03-30 | 2008-10-09 | Rautaruukki Oyj | Foundation arrangement |
| US8359798B2 (en) | 2008-11-03 | 2013-01-29 | Siemens Aktiengesellschaft | Foundation particularly for a wind turbine and wind turbine |
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| Publication number | Publication date |
|---|---|
| DK200000612A (en) | 2001-09-10 |
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