WO2023187235A1 - Foundation for wind generator towers and building method of said foundation - Google Patents

Foundation for wind generator towers and building method of said foundation Download PDF

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Publication number
WO2023187235A1
WO2023187235A1 PCT/ES2023/070182 ES2023070182W WO2023187235A1 WO 2023187235 A1 WO2023187235 A1 WO 2023187235A1 ES 2023070182 W ES2023070182 W ES 2023070182W WO 2023187235 A1 WO2023187235 A1 WO 2023187235A1
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WIPO (PCT)
Prior art keywords
shaft
lower slab
foundation
upper sheet
filling material
Prior art date
Application number
PCT/ES2023/070182
Other languages
Spanish (es)
French (fr)
Inventor
Jose Ramón Carril Gonzalez
Sandra Fuentes Alonso
Alvaro HERNANDO ARAGÓN
Original Assignee
Ms Techno Rditech Sl
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 Ms Techno Rditech Sl filed Critical Ms Techno Rditech Sl
Publication of WO2023187235A1 publication Critical patent/WO2023187235A1/en

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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
    • 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
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/728—Onshore wind turbines

Definitions

  • the present invention is included in the field of foundations for towers, such as wind turbines or wind turbines, as well as their construction procedure.
  • the application of the invention focuses on the construction sector and the energy generation sector, in particular wind energy, where it is possible to use concrete, lattice, hybrid or metallic towers for land-based or "on-shore” wind turbines. -shore” .
  • the foundations of "on-shore” towers are based mainly on two mechanisms: on the one hand, superficial foundations that are sized taking into account the admissible stress of the ground and, on the other hand, deep foundations.
  • the object of the invention is a foundation for wind turbine towers and its construction procedure.
  • the technical problem to be solved is to configure the foundation so that its structure is efficient, with correct structural behavior, reducing the volume of material necessary for the elements that compose it, replacing the weight of the structural elements with more filling material, and establishing the stages of the procedure to make it efficient and fast, which results in lower cost.
  • the present invention refers to a foundation for wind turbine towers that comprises a lower slab with a circumferential or polyhedral perimeter, and a cylindrical or polygonal shaft that is arranged on the lower slab, as is known in the state of the art.
  • the foundation is characterized by the fact that it also includes an upper sheet in the shape of a truncated cone or pyramid that is arranged on the lower slab and the shaft, filling material that is arranged in the space between the lower slab, the shaft and the sheet. upper part, completely or partially filling it, first joining means to join the lower slab, the shaft and the upper sheet that run inside the shaft.
  • the exposed foundation is suitable for wind turbine towers, but also for any other type of construction, normally vertical, that requires a base foundation.
  • An advantage of the foundation is that it allows a more constant stress distribution than in known foundations, as it has laminar configuration elements, thus avoiding stress concentrations due to the ribs and struts. In addition, it offers excellent load distribution and high tensile strength, which makes it ideal for wind turbine constructions that require large foundations, replacing part of the concrete volume with earth filling. compacted.
  • Another advantage is that with the filler material added to the foundation, the volume of granular material that has to be taken to the landfill is reduced, further achieving a reduction in CO2 emissions.
  • Another advantage related to the filling material is that when it completely fills the space it allows greater use of the granular excavation material.
  • the invention refers to a procedure for constructing a foundation for wind turbine towers as set out above, which includes the following steps known in the state of the art:
  • the foundation material can be of any type, the most common is reinforced and/or prestressed concrete, although it can also be geo-polymer, wood, steel or mixed structure, depending on the resistant properties required for the foundation.
  • the procedure will be adapted according to the material and as known to the expert in the field, for example, with reinforced concrete the corresponding formwork and constitution of the reinforcement with rebar will be used, the prestressing can include tendons or similar, while prefabricated elements avoid the use of complex formwork and requires machining to include joining elements and the like.
  • An advantage of this procedure is that since the elements that make up the foundation are laminar, without ribs or protuberances, the amount of material needed is reduced, very relevant in the savings in the case of concrete.
  • Figure 1A represents a perspective view and cross section of a foundation with a tower, with slab lower perimeter in circumference, cylindrical shaft and upper sheet in the shape of a truncated cone, filling material arranged in the space between the lower slab, the shaft and the upper sheet, completely filling it, as well as inside the shaft.
  • Figure IB is the same representation, but with the filling material partially filling, and without filling the shaft.
  • Figures 1C and ID are partial enlarged views of Figures 1A or
  • Figure 2 represents a lower perspective view and cross section of a foundation with a tower, the foundation elements with perimeter and radial reinforcements.
  • Figure 3 represents a perspective view and cross section of a foundation with a lower perimeter slab in a polyhedron, a polygonal shaft and an upper sheet in the shape of a frustum of a pyramid.
  • Figure 4 represents a perspective view and cross section of a foundation with the lower slab of variable thickness and the solid shaft.
  • Figures 5A to 5F schematically represent the construction stages of a foundation.
  • Figure 6 represents a perspective view of a foundation in which the top sheet includes an opening.
  • Figures 7A to 7C represent perspective views and cross section of foundations with intermediate sheet between the lower slab and the upper sheet.
  • Figure 8A represents a perspective view and cross section of a foundation in which the bottom slab is formed by an existing foundation portion and a bottom slab portion.
  • Figure 8B is a partial enlarged view of Figure 8A.
  • Figure 9 represents a perspective view and cross section of a foundation with a tower in which the shaft includes a lower and an upper widening.
  • Figure 1A shows in section a foundation for wind turbine towers that includes a lower slab (1) with a circumferential perimeter, which could also be in polyhedron, a cylindrical shaft (2), which could also be polygonal, which is arranged on the lower slab.
  • a lower slab (1) with a circumferential perimeter, which could also be in polyhedron
  • a cylindrical shaft (2) which could also be polygonal, which is arranged on the lower slab.
  • filling material (4) that remains arranged in the space between the lower slab (1), the shaft (2) and the upper sheet (3), filling it completely, as seen in figure 1A, or partially, as seen in figure IB, first means of union (5) to join the lower slab
  • the first connecting means (5) as a bolt cage include separate sets of parallel bars with their nuts (5.1) and a washer or flange (5.2), said flange (5.2) being connected to the wall. of the tower (10), figure 1C, or not connected to it, figure 8B, as is known.
  • the filling material (4) is shown in the configurations of Figures 1A, IB and in the stages of Figures 5D to 5F. For clarity, it is not included in the rest of the figures showing the other configurations, and it must be considered that they could also present filling material (4) filling the available space totally or partially, in a similar way to that shown in Figures 1A. and IB.
  • the filling material (4) is also arranged inside the shaft (2), filling it completely, Figure 1A, or also partially, not shown. This favors the reuse of excavation material, providing a greater load to the foundation and further reducing the volume of granular material that has to be taken to landfill.
  • the shaft (2) could be solid as seen in figure 4.
  • the foundation also includes second joining means (6) to join the lower slab.
  • the first connecting means (5) are a cage of bolts, figures 1A, IB, 1C, 8A, 8B, in this way the mechanical anchoring is integrated by means of bolts to the tower
  • the shaft (2) includes a lower widening (2 .1) in correspondence with the lower slab (1) and/or an upper widening (2 .2) in correspondence with the upper sheet (3).
  • FIG. 2 Another option, figure 2, is that the lower slab (1), the shaft (2) and/or the upper sheet (3) include perimeter reinforcements (1.1, 2.3, 3.1) and/or radial reinforcements ( 1 .2, 2 . 4, 3. 2 ) .
  • variable, figure 4 showing the lower slab (1) with thickness variable.
  • the uniform thickness allows for greater ease of construction, the variable thickness allows for more optimal adaptation to service loads: resistance to deformation, cross-section design, connection conditions and support conditions.
  • Figure 6 Another option, Figure 6, is that the upper sheet (3) has an opening (3.3) configured in such a way that it allows access to the interior of the shaft (2). This provides the advantage of being able to carry out preventive maintenance tasks or analyze possible pathologies.
  • the foundation also includes an intermediate sheet (7) that is arranged between the lower slab (1) and the upper sheet (3).
  • Figure 7A shows an intermediate sheet (7) arranged perpendicularly to the lower slab (1)
  • Figure 7B shows an intermediate sheet (7) connected to the confluence between the lower slab (1) and the upper sheet (3)
  • Figure 7C shows an intermediate sheet (7) connected to the confluence between the shaft (2) and the upper sheet (3).
  • the lower slab (1) can be configured as a single piece, figures 1A to ID, 2, 3, 4, 5B to 5F, 6, 7A to 7C, 9, or be formed by a portion of the existing foundation
  • FIGS. 8A and 8B where, in the represented embodiment, the existing foundation portion (8) corresponds to the center of the foundation and the portion of the lower slab (9) is a hoop or crown that surrounds it, although it could be any other configuration.
  • the procedure for constructing a foundation for wind turbine towers as described includes the following stages:
  • filling material is also provided.
  • Another option is that, after placing the sheet upper (3), the second joining means (6) are placed to join the lower slab (1) and the upper sheet (3), not shown in the figures.
  • Another option is that, prior to adding the filling material (4), the intermediate sheet is placed
  • a numerical example of implementation is a foundation for a wind turbine of approximately 6 MW.
  • a tower of about 110 m with a conventional foundation, 700 m 3 of concrete and 85,000 kg of steel are used, while with the foundation of the invention, which can be said to be laminar type, 450 m 3 of concrete and 73,000 kg of steel are used. kg of steel, which represents a concrete saving of more than 35

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  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
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  • Paleontology (AREA)
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Abstract

The present invention relates to a foundation for wind generator towers comprising a lower slab having a circular or polyhedral perimeter, a cylindrical or polygonal shaft which is arranged on top of the lower slab, a frustoconical or pyramidal upper sheet which is arranged on top of the lower slab and the shaft, filling material between the lower slab, the shaft and the upper sheet completely or partially filling same, first joining means for joining the lower slab, the shaft and the upper sheet which run through the inside of the shaft. The present invention also relates to a building method of the foundation: preparing the terrain, positioning the first joining means, the lower slab, the shaft, supplying the filling material, and positioning the upper sheet. The structure is efficient, reducing the required volume of material, and the method is efficient and quick.

Description

CIMENTACIÓN PARA TORRES DE AEROGENERADORES Y FOUNDATION FOR WIND TURBINE TOWERS AND
PROCEDIMIENTO DE CONSTRUCCIÓN DE DICHA CIMENTACIÓN CONSTRUCTION PROCEDURE OF SUCH FOUNDATION
CAMPO TÉCNICO DE LA INVENCIÓN TECHNICAL FIELD OF THE INVENTION
La presente invención se engloba en el campo de las cimentaciones para torres, como pueden ser las eólicas o de aerogeneradores, así como a su procedimiento de construcción . The present invention is included in the field of foundations for towers, such as wind turbines or wind turbines, as well as their construction procedure.
La aplicación de la invención se centra en el sector de la construcción Y en el de la generación de energía, en particular el de la energía eólica, donde es posible emplear torres de hormigón, de celosía, hibridas o metálicas para aerogeneradores terrestres u "on-shore" . The application of the invention focuses on the construction sector and the energy generation sector, in particular wind energy, where it is possible to use concrete, lattice, hybrid or metallic towers for land-based or "on-shore" wind turbines. -shore" .
ANTECEDENTES DE LA INVENCIÓN BACKGROUND OF THE INVENTION
En la actualidad las cimentaciones de torres "on-shore" se basan principalmente en dos mecanismos : por un lado, las cimentaciones superficiales que se dimensionan teniendo en cuenta la tensión admisible del terreno y, por otro lado, las cimentaciones profundas . Currently, the foundations of "on-shore" towers are based mainly on two mechanisms: on the one hand, superficial foundations that are sized taking into account the admissible stress of the ground and, on the other hand, deep foundations.
En ambos casos, dichas tipologías de cimentación se podrían describir como cimentaciones de gravedad, ya que el equilibrio del sistema de cimentación depende en gran medida del peso propio de la cimentación y del relleno, aunque en el caso de las cimentaciones profundas hay más mecanismos implicados en dicho equilibrio (capacidad lateral del terreno, fricción, etc . ) . In both cases, these foundation typologies could be described as gravity foundations, since the balance of the foundation system depends largely on the own weight of the foundation and the fill, although in the case of deep foundations there are more mechanisms involved. in said balance (lateral capacity of the terrain, friction, etc.).
La problemática de estas soluciones por gravedad es que requieren grandes volúmenes de hormigón y de acero . The problem with these gravity solutions is that They require large volumes of concrete and steel.
Recientemente se han propuesto soluciones que reducen el volumen de hormigón mediante el empleo de losas armadas rigidizadas mediante elementos radiales, tal y como se recoge en las patentes WO2010/138978, US2011/0061321,Recently, solutions have been proposed that reduce the volume of concrete through the use of reinforced slabs stiffened by radial elements, as set out in patents WO2010/138978, US2011/0061321,
ES2361358 Y US9534405. Dichas soluciones consisten en sustituir hormigón de la losa por nervios, más eficientes estructuralmente, y conseguir más peso de relleno . ES2361358 AND US9534405. These solutions consist of replacing concrete in the slab with ribs, which are more structurally efficient, and achieving more filling weight.
También existen soluciones que emplean elementos tipo puntal (o jabalcón) para rigidizar la losa inferior tal y como se hace referencia en las patentes WO2015185770A1,There are also solutions that use strut (or truss) type elements to stiffen the lower slab as referred to in patents WO2015185770A1,
ES2548297B9, ES2369304 y EP2444663, que consiguen separar las reacciones a la losa, con lo que ésta puede ser de menor dimensión . ES2548297B9, ES2369304 and EP2444663, which manage to separate the reactions to the slab, so it can be smaller in size.
DESCRIPCIÓN DE LA INVENCIÓN DESCRIPTION OF THE INVENTION
La presente invención queda establecida y caracterizada en las reivindicaciones independientes, mientras que las reivindicaciones dependientes describen otras características de la misma . The present invention is established and characterized in the independent claims, while the dependent claims describe other characteristics thereof.
El objeto de la invención es una cimentación para torres de aerogeneradores y su procedimiento de construcción . El problema técnico a resolver es configurar la cimentación para que su estructura sea eficiente, con un correcto comportamiento estructural, reduciendo el volumen de material necesario de los elementos que la componen, sustituyendo el peso de los elementos estructurales por más material de relleno, Y establecer las etapas del procedimiento para que sea eficiente y rápido, lo cual redunda en un menor coste . The object of the invention is a foundation for wind turbine towers and its construction procedure. The technical problem to be solved is to configure the foundation so that its structure is efficient, with correct structural behavior, reducing the volume of material necessary for the elements that compose it, replacing the weight of the structural elements with more filling material, and establishing the stages of the procedure to make it efficient and fast, which results in lower cost.
A la vista de lo anteriormente enunciado, la presente invención se refiere a una cimentación para torres de aerogeneradores que comprende una losa inferior con perímetro en circunferencia o poliedro, Y un fuste cilindrico o poligonal que queda dispuesto sobre la losa inferior, como es conocido en el estado de la técnica . In view of the above, the present invention refers to a foundation for wind turbine towers that comprises a lower slab with a circumferential or polyhedral perimeter, and a cylindrical or polygonal shaft that is arranged on the lower slab, as is known in the state of the art.
Caracteriza a la cimentación el que además comprende una lámina superior en forma de tronco de cono o de pirámide que queda dispuesta sobre la losa inferior y el fuste, material de relleno que queda dispuesto en el espacio entre la losa inferior, el fuste y la lámina superior llenándolo total o parcialmente, unos primeros medios de unión para unir la losa inferior, el fuste y la lámina superior que discurren por el interior del fuste . The foundation is characterized by the fact that it also includes an upper sheet in the shape of a truncated cone or pyramid that is arranged on the lower slab and the shaft, filling material that is arranged in the space between the lower slab, the shaft and the sheet. upper part, completely or partially filling it, first joining means to join the lower slab, the shaft and the upper sheet that run inside the shaft.
La cimentación expuesta es adecuada para torres de aerogeneradores, pero igualmente para cualquier otro tipo de construcción, normalmente vertical, que requiera de una cimentación de base . The exposed foundation is suitable for wind turbine towers, but also for any other type of construction, normally vertical, that requires a base foundation.
Una ventaja de la cimentación es que permite una distribución de esfuerzos más constante que en las cimentaciones conocidas, al tener elementos de configuración de tipo laminar, con lo que se evitan las concentraciones de tensiones debidas a los nervios y puntales . Además, ofrece una excelente distribución de cargas y una alta resistencia a tracción, lo que la hace ideal para construcciones de aerogeneradores que requieren cimentaciones de grandes dimensiones, substituyendo parte del volumen de hormigón por un relleno de tierras compactado . An advantage of the foundation is that it allows a more constant stress distribution than in known foundations, as it has laminar configuration elements, thus avoiding stress concentrations due to the ribs and struts. In addition, it offers excellent load distribution and high tensile strength, which makes it ideal for wind turbine constructions that require large foundations, replacing part of the concrete volume with earth filling. compacted.
Otra ventaja es que con el material de relleno aportado a la cimentación se reduce el volumen de material granular que se tiene que llevar a vertedero, consiguiendo de manera añadida una reducción en las emisiones de CO2. Another advantage is that with the filler material added to the foundation, the volume of granular material that has to be taken to the landfill is reduced, further achieving a reduction in CO2 emissions.
Otra ventaja relacionada con el material de relleno es que cuando llena el espacio totalmente permite conseguir un mayor aprovechamiento del material granular de excavaciónAnother advantage related to the filling material is that when it completely fills the space it allows greater use of the granular excavation material.
Y aporta a la cimentación mejores condiciones de estabilidad; cuando llena el espacio parcialmente sigue aportando mejoras en las condiciones de estabilidad Y además permite minimizar los efectos de la sub-presión del agua, al compensar, parcialmente, dicha sub-presión con el peso del material de relleno . And it provides the foundation with better stability conditions; When it partially fills the space, it continues to provide improvements in stability conditions. It also allows minimizing the effects of water underpressure by partially compensating for said underpressure with the weight of the filling material.
Asimismo, la invención se refiere a un procedimiento de construcción de una cimentación para torres de aerogeneradores según se ha expuesto aquí arriba, que comprende las siguientes etapas conocidas en el estado de la técnica : Likewise, the invention refers to a procedure for constructing a foundation for wind turbine towers as set out above, which includes the following steps known in the state of the art:
-excavación y preparación del terreno sobre el que queda dispuesta la cimentación; -excavation and preparation of the land on which the foundation is laid out;
-colocación de los primeros medios de unión, para unir la losa inferior, el fuste, y la lámina superior; -placement of the first joining means, to join the lower slab, the shaft, and the upper sheet;
-colocación de la losa inferior; -placement of the lower slab;
-colocación del fuste . -placement of the shaft.
Caracteriza al procedimiento el que además comprende las siguientes etapas en secuencia : The procedure is characterized by the fact that it also includes the following stages in sequence:
-aportación del material de relleno, sobre la losa inferior y alrededor del fuste; -colocación de la lámina superior, de manera que el material de relleno, llena total o parcialmente el espacio entre la losa inferior, el fuste, y la lámina superior . -provision of filling material, on the lower slab and around the shaft; -placement of the upper sheet, so that the filling material totally or partially fills the space between the lower slab, the shaft, and the upper sheet.
El material de la cimentación puede ser de cualquier tipo, lo más habitual es hormigón armado y/o pretensado, aunque también puede ser geo-polimero, madera, acero o estructura mixta, en dependencia de las propiedades resistentes que se requieran para la cimentación . El procedimiento se adecuará según el material y como conoce el experto en la materia, por ejemplo, con un hormigón armado se utilizarán los correspondientes encofrados Y constitución de la armadura con ferralla, el pretensado puede incluir tendones o similares, mientras que unos elementos prefabricados evitan el empleo de encofrados complejos y obligan a mecanizados para incluir elementos de unión y similares . The foundation material can be of any type, the most common is reinforced and/or prestressed concrete, although it can also be geo-polymer, wood, steel or mixed structure, depending on the resistant properties required for the foundation. The procedure will be adapted according to the material and as known to the expert in the field, for example, with reinforced concrete the corresponding formwork and constitution of the reinforcement with rebar will be used, the prestressing can include tendons or similar, while prefabricated elements avoid the use of complex formwork and requires machining to include joining elements and the like.
Una ventaja de dicho procedimiento es que al ser los elementos que componen la cimentación de tipo laminar, sin nervios o protuberancias, se reduce la cantidad de material necesario, muy relevante en el ahorro del caso de hormigónAn advantage of this procedure is that since the elements that make up the foundation are laminar, without ribs or protuberances, the amount of material needed is reduced, very relevant in the savings in the case of concrete.
Y acero, y esto permite una ejecución más rápida y económica . And steel, and this allows for faster and more economical execution.
BREVE DESCRIPCIÓN DE LAS FIGURAS BRIEF DESCRIPTION OF THE FIGURES
Se complementa la presente memoria descriptiva, con un juego de figuras, ilustrativas de las realizaciones incluidas, y nunca limitativas de la invención . This descriptive report is complemented with a set of figures, illustrative of the included embodiments, and never limiting the invention.
La figura 1A representa una vista en perspectiva y sección transversal de una cimentación con una torre, con losa inferior de perímetro en circunferencia, fuste cilindrico y lámina superior en forma de tronco de cono, material de relleno dispuesto en el espacio entre la losa inferior, el fuste y la lámina superior llenándolo totalmente, así como en el interior del fuste . La figura IB es la misma representación, pero con el material de relleno llenando parcialmente, y sin relleno del fuste . Las figuras 1C y ID son unas vistas aumentadas parciales de las figuras 1A oFigure 1A represents a perspective view and cross section of a foundation with a tower, with slab lower perimeter in circumference, cylindrical shaft and upper sheet in the shape of a truncated cone, filling material arranged in the space between the lower slab, the shaft and the upper sheet, completely filling it, as well as inside the shaft. Figure IB is the same representation, but with the filling material partially filling, and without filling the shaft. Figures 1C and ID are partial enlarged views of Figures 1A or
IB, sin incluir el material de relleno, mostrando los primeros medios de unión en la figura 1C, mostrando unos segundos medios de unión en la figura ID . IB, not including the filling material, showing the first joining means in Figure 1C, showing a second joining means in Figure ID.
La figura 2 representa una vista en perspectiva inferior y sección transversal de una cimentación con torre, los elementos de la cimentación con refuerzos perimetrales y radiales . Figure 2 represents a lower perspective view and cross section of a foundation with a tower, the foundation elements with perimeter and radial reinforcements.
La figura 3 representa una vista en perspectiva y sección transversal de una cimentación con losa inferior de perímetro en poliedro, fuste poligonal y lámina superior en forma de tronco de pirámide . Figure 3 represents a perspective view and cross section of a foundation with a lower perimeter slab in a polyhedron, a polygonal shaft and an upper sheet in the shape of a frustum of a pyramid.
La figura 4 representa una vista en perspectiva y sección transversal de una cimentación con la losa inferior de espesor variable y el fuste macizo . Figure 4 represents a perspective view and cross section of a foundation with the lower slab of variable thickness and the solid shaft.
Las figuras 5A a 5F representan de manera esquemática las etapas de construcción de una cimentación . Figures 5A to 5F schematically represent the construction stages of a foundation.
La figura 6 representa una vista en perspectiva de una cimentación en la que la lámina superior incluye una abertura . Las figuras 7A a 7C representan vistas en perspectiva y sección transversal de cimentaciones con lámina intermedia entre la losa inferior y la lámina superior . Figure 6 represents a perspective view of a foundation in which the top sheet includes an opening. Figures 7A to 7C represent perspective views and cross section of foundations with intermediate sheet between the lower slab and the upper sheet.
La figura 8A representa una vista en perspectiva y sección transversal de una cimentación en la que la losa inferior está formada por una porción de cimentación existente y una porción de losa inferior . La figura 8B es una vista aumentada parcial de la figura 8A. Figure 8A represents a perspective view and cross section of a foundation in which the bottom slab is formed by an existing foundation portion and a bottom slab portion. Figure 8B is a partial enlarged view of Figure 8A.
La figura 9 representa una vista en perspectiva y sección transversal de una cimentación con una torre en la que el fuste incluye un ensanchamiento inferior y uno superior . Figure 9 represents a perspective view and cross section of a foundation with a tower in which the shaft includes a lower and an upper widening.
EXPOSICIÓN DETALLADA DE LA INVENCIÓN DETAILED STATEMENT OF THE INVENTION
La figura 1A muestra en sección una cimentación para torres de aerogeneradores que comprende una losa inferior (1 ) con perímetro en circunferencia, pudiera también ser en poliedro, un fuste (2 ) cilindrico, pudiera también ser poligonal, que queda dispuesto sobre la losa inferior (1 ) , una lámina superior (3) en forma de tronco de cono, pudiera ser también en tronco de pirámide, que queda dispuesta sobre la losa inferior (1 ) y el fuste (2 ) , material de relleno (4 ) que queda dispuesto en el espacio entre la losa inferior (1 ) , el fuste (2 ) y la lámina superior (3) llenándolo totalmente, como se aprecia en la figura 1A, o parcialmente, como se aprecia en la figura IB, unos primeros medios de unión (5) para unir la losa inferiorFigure 1A shows in section a foundation for wind turbine towers that includes a lower slab (1) with a circumferential perimeter, which could also be in polyhedron, a cylindrical shaft (2), which could also be polygonal, which is arranged on the lower slab. (1), an upper sheet (3) in the shape of a truncated cone, which could also be a truncated pyramid, which is arranged on the lower slab (1) and the shaft (2), filling material (4) that remains arranged in the space between the lower slab (1), the shaft (2) and the upper sheet (3), filling it completely, as seen in figure 1A, or partially, as seen in figure IB, first means of union (5) to join the lower slab
(1) , el fuste (2 ) y la lámina superior (3) que discurren por el interior del fuste (2 ) , en la realización mostrada en las figuras 1A, IB y 1C son una jaula de pernos, que se aprecia en una vista aumentada en la figura IB en la que no se incluye ningún material de relleno (4 ) para que no interfiera en la claridad a la figura . En la figura 1C se aprecia que los primeros medios de unión (5) como jaula de pernos incluyen sendos conjuntos de barras paralelas con sus tuercas (5.1 ) y una arandela o brida (5.2 ) , estando dicha brida (5.2 ) conectada a la pared de la torre (10 ) , figura 1C, o no conectada a la misma, figura 8B, como es conocido . (1), the shaft (2) and the upper sheet (3) that run inside the shaft (2), in the embodiment shown in Figures 1A, IB and 1C are a cage of bolts, which can be seen in a enlarged view in figure IB in which No filler material (4) is included so that it does not interfere with the clarity of the figure. In Figure 1C it can be seen that the first connecting means (5) as a bolt cage include separate sets of parallel bars with their nuts (5.1) and a washer or flange (5.2), said flange (5.2) being connected to the wall. of the tower (10), figure 1C, or not connected to it, figure 8B, as is known.
El material de relleno (4 ) se muestra en las configuraciones de las figuras 1A, IB y en las etapas de las figuras 5D a 5F . Por claridad, no se incluye en el resto de las figuras mostrando las otras configuraciones, debiendo considerarse que pudieran igualmente presentar material de relleno (4 ) llenando el espacio disponible de manera total o parcial, de manera similar a como se representa en las figuras 1A y IB . The filling material (4) is shown in the configurations of Figures 1A, IB and in the stages of Figures 5D to 5F. For clarity, it is not included in the rest of the figures showing the other configurations, and it must be considered that they could also present filling material (4) filling the available space totally or partially, in a similar way to that shown in Figures 1A. and IB.
Una opción es que el material de relleno (4 ) además queda dispuesto en el interior del fuste (2 ) llenándolo totalmente, figura 1A, o también parcialmente, no representado . Esto favorece la reutilización del material de excavación aportando mayor carga a la cimentación y consiguiendo reducir aún más el volumen de material granular que se tiene que llevar a vertedero . Igualmente, el fuste (2 ) pudiera ser macizo como se aprecia en la figura 4 . One option is that the filling material (4) is also arranged inside the shaft (2), filling it completely, Figure 1A, or also partially, not shown. This favors the reuse of excavation material, providing a greater load to the foundation and further reducing the volume of granular material that has to be taken to landfill. Likewise, the shaft (2) could be solid as seen in figure 4.
Otra opción es que la cimentación además comprende unos segundos medios de unión ( 6) para unir la losa inferiorAnother option is that the foundation also includes second joining means (6) to join the lower slab.
(1 ) y la lámina superior (3) , representado un modo de realización de los mismos en detalle en la figura ID como dos varillas paralelas unidas a una varilla transversal a las mismas, y de manera esquemática en las figuras 1A, IB,(1) and the upper sheet (3), an embodiment thereof represented in detail in Figure ID as two parallel rods joined to a transverse rod a the same, and schematically in figures 1A, IB,
2, 3, 4, 7A, 7B, 7C, 8A y 9. En cualquier caso, pueden ser de cualquier tipo, como esperas o adhesivo . De esta manera se incluye una unión añadida entre elementos, lo que aumenta la rigidez estructural . 2, 3, 4, 7A, 7B, 7C, 8A and 9. In any case, they can be of any type, such as wait or adhesive. In this way, an added connection between elements is included, which increases structural rigidity.
Como se ha citado más arriba, una opción ventajosa es que los primeros medios de unión (5) son una jaula de pernos, figuras 1A, IB, 1C, 8A, 8B, de esa manera se tiene integrado el anclaje mecánico mediante pernos a la torreAs mentioned above, an advantageous option is that the first connecting means (5) are a cage of bolts, figures 1A, IB, 1C, 8A, 8B, in this way the mechanical anchoring is integrated by means of bolts to the tower
(10 ) . Sin embargo, otros anclajes son posibles, como esperas, conectadores, tendones, cables o pernos pretensados . (10). However, other anchors are possible, such as holds, connectors, tendons, cables or prestressed bolts.
Otra opción es que el fuste (2 ) incluya un ensanchamiento inferior (2 .1 ) en correspondencia con la losa inferior (1 ) y/o un ensanchamiento superior (2 .2 ) en correspondencia con la lámina superior (3) . La configuración de la figuraAnother option is that the shaft (2) includes a lower widening (2 .1) in correspondence with the lower slab (1) and/or an upper widening (2 .2) in correspondence with the upper sheet (3). Figure configuration
9 muestra ambos, aunque pudiera estar el uno, el otro o ambos . La inclusión de alguno de ellos supone una configuración adicional para ajustarse a los esfuerzos que debe resistir la cimentación . 9 shows both, although it could be one, the other or both. The inclusion of any of them represents an additional configuration to adjust to the forces that the foundation must resist.
Otra opción, figura 2, es que la losa inferior (1 ) , el fuste (2 ) y/o la lámina superior (3) incluyan refuerzos per imet rales (1 .1, 2 . 3, 3.1 ) y/o radiales (1 .2, 2 . 4, 3. 2 ) .Another option, figure 2, is that the lower slab (1), the shaft (2) and/or the upper sheet (3) include perimeter reinforcements (1.1, 2.3, 3.1) and/or radial reinforcements ( 1 .2, 2 . 4, 3. 2 ) .
Estas configuraciones se comportan como vigas empotradas, permitiendo rigidizar los elementos en los que se disponen . These configurations behave like embedded beams, allowing the elements in which they are arranged to be stiffened.
Otra opción es que la losa inferior (1 ) , el fuste (2) y/o la lámina superior (3) sean de espesor uniforme, figurasAnother option is that the lower slab (1), the shaft (2) and/or the upper sheet (3) are of uniform thickness, figures
1A a ID, 2, 3, 5B a 5F, 7A, 7B, 7C, 8A, 8B y 9, o variable, figura 4 mostrando la losa inferior (1 ) con espesor variable . El espesor uniforme permite una mayor facilidad de construcción, el espesor variable permite adaptarse de forma más óptima a las cargas de servicio : resistencia a la deformación, diseño de la sección transversal, condiciones de conexión y condiciones de apoyo . 1A to ID, 2, 3, 5B to 5F, 7A, 7B, 7C, 8A, 8B and 9, or variable, figure 4 showing the lower slab (1) with thickness variable. The uniform thickness allows for greater ease of construction, the variable thickness allows for more optimal adaptation to service loads: resistance to deformation, cross-section design, connection conditions and support conditions.
Otra opción, figura 6, es que la lámina superior (3 ) presente una abertura (3.3) configurada de tal manera que permite el acceso al interior del fuste (2 ) . Esto aporta la ventaja de poder hacer labores de mantenimiento preventivo o análisis de posibles patologías . Another option, Figure 6, is that the upper sheet (3) has an opening (3.3) configured in such a way that it allows access to the interior of the shaft (2). This provides the advantage of being able to carry out preventive maintenance tasks or analyze possible pathologies.
Otra opción es que la cimentación además comprenda una lámina intermedia (7 ) que queda dispuesta entre la losa inferior (1 ) y la lámina superior (3) . La figura 7A muestra una lámina intermedia (7 ) dispuesta perpendicularmente a la losa inferior (1 ) , la figura 7B muestra una lámina intermedia (7 ) conectada a la confluencia entre la losa inferior (1 ) la lámina superior (3) , la figura 7C muestra una lámina intermedia (7 ) conectada a la confluencia entre el fuste (2 ) y la lámina superior (3) . Las distintas configuraciones de láminas intermedias (7 ) permiten rigidizar el interior de la cimentación, aumentando la capacidad estructural de la cimentación, optimizando así su característica portante . Another option is that the foundation also includes an intermediate sheet (7) that is arranged between the lower slab (1) and the upper sheet (3). Figure 7A shows an intermediate sheet (7) arranged perpendicularly to the lower slab (1), Figure 7B shows an intermediate sheet (7) connected to the confluence between the lower slab (1) and the upper sheet (3), Figure 7C shows an intermediate sheet (7) connected to the confluence between the shaft (2) and the upper sheet (3). The different configurations of intermediate sheets (7) allow the interior of the foundation to be stiffened, increasing the structural capacity of the foundation, thus optimizing its load-bearing characteristic.
La losa inferior (1 ) puede estar configurada como una única pieza, figuras 1A a ID, 2, 3, 4, 5B a 5F, 6, 7A a 7C, 9, o estar formada por una porción de cimentación existenteThe lower slab (1) can be configured as a single piece, figures 1A to ID, 2, 3, 4, 5B to 5F, 6, 7A to 7C, 9, or be formed by a portion of the existing foundation
(8) y una porción de losa inferior ( 9) , figuras 8A y 8B en donde, en la realización representada, la porción de cimentación existente (8 ) corresponde al centro de la cimentación y la porción de losa inferior ( 9) es un aro o corona que la rodea, aunque pudiera ser cualquier otra configuración . (8) and a portion of the lower slab (9), figures 8A and 8B where, in the represented embodiment, the existing foundation portion (8) corresponds to the center of the foundation and the portion of the lower slab (9) is a hoop or crown that surrounds it, although it could be any other configuration.
El procedimiento de construcción de una cimentación para torres de aerogeneradores según se ha expuesto comprende las siguientes etapas: The procedure for constructing a foundation for wind turbine towers as described includes the following stages:
-excavación y preparación del terreno sobre el que queda dispuesta la cimentación; -excavation and preparation of the land on which the foundation is laid out;
-colocación de los primeros medios de unión (5) para unir la losa inferior (1), el fuste (2) y la lámina superior-placement of the first joining means (5) to join the lower slab (1), the shaft (2) and the upper sheet
(3), figura 5A; (3), Figure 5A;
-colocación de la losa inferior (1), figura 5B; -placement of the lower slab (1), figure 5B;
-colocación del fuste (2), figura 5C; pudiendo estar estas etapas iniciales en otra secuencia, por ejemplo, si el fuste (2) es un prefabricado los primeros medios de unión (5) se pueden colocar tras la colocación de la losa inferior (1); además comprende las siguientes etapas en secuencia: -placement of the shaft (2), figure 5C; These initial stages may be in another sequence, for example, if the shaft (2) is prefabricated, the first joining means (5) can be placed after placing the lower slab (1); It also includes the following stages in sequence:
-aportación del material de relleno (4) sobre la losa inferior (1) y alrededor del fuste (2), figura 5D; -provision of filling material (4) on the lower slab (1) and around the shaft (2), figure 5D;
-colocación de la lámina superior (3), de manera que el material de relleno (4) llena total o parcialmente el espacio entre la losa inferior (1), el fuste (2) y la lámina superior (3), figura 5E. Tras esta etapa, una vez construida la cementación, se rellena el terreno como se considere y se une la torre (10), figura 5F. -placement of the upper sheet (3), so that the filling material (4) totally or partially fills the space between the lower slab (1), the shaft (2) and the upper sheet (3), figure 5E. After this stage, once the cementation has been built, the land is filled as considered and the tower (10) is joined, figure 5F.
Una opción es que, con anterioridad a la colocación de la lámina superior (3), se aporta además material de rellenoOne option is that, prior to placing the top sheet (3), filling material is also provided.
(4) al interior del fuste (2), llenándolo total o parcialmente, no representado en las figuras. (4) inside the shaft (2), filling it totally or partially, not represented in the figures.
Otra opción es que, tras la colocación de la lámina superior (3) , se colocan los segundos medios de unión ( 6) para unir la losa inferior (1 ) y la lámina superior (3) , no representado en las figuras . Another option is that, after placing the sheet upper (3), the second joining means (6) are placed to join the lower slab (1) and the upper sheet (3), not shown in the figures.
Otra opción es que, con anterioridad a la aportación del material de relleno (4 ) , se coloca la lámina intermediaAnother option is that, prior to adding the filling material (4), the intermediate sheet is placed
(7) que, tras la aportación del material de relleno (4 ) y colocación de la lámina superior (3) , queda dispuesta entre la losa inferior (1 ) y la lámina superior (3) , no representado en las figuras . (7) which, after providing the filling material (4) and placing the upper sheet (3), is arranged between the lower slab (1) and the upper sheet (3), not shown in the figures.
Un ejemplo numérico de realización es una cimentación para un aerogenerador de 6 MW aprox . con una torre de unos 110 m, con cimentación convencional se utilizan 700 m3 de hormigón y 85000 kg de acero, mientras que con la cimentación de la invención, que se puede decir de tipo laminar, se utilizan 450 m3 de hormigón y 73000 kg de acero, lo que supone un ahorro de hormigón de más del 35A numerical example of implementation is a foundation for a wind turbine of approximately 6 MW. With a tower of about 110 m, with a conventional foundation, 700 m 3 of concrete and 85,000 kg of steel are used, while with the foundation of the invention, which can be said to be laminar type, 450 m 3 of concrete and 73,000 kg of steel are used. kg of steel, which represents a concrete saving of more than 35
% y un ahorro de acero de más del 14 %, además reduciendo la complejidad de la construcción . % and a steel saving of more than 14%, also reducing the complexity of construction.

Claims

REIVINDICACIONES
1 . -Cimentación para torres de aerogeneradores que comprende una losa inferior (1 ) con perímetro en circunferencia o poliedro, un fuste (2 ) cilindrico o poligonal que queda dispuesto sobre la losa inferior (1 ) , caracterizada por que además comprende una lámina superior1 . -Foundation for wind turbine towers that comprises a lower slab (1) with a circumferential or polyhedral perimeter, a cylindrical or polygonal shaft (2) that is arranged on the lower slab (1), characterized in that it also includes an upper sheet
(3) en forma de tronco de cono o de pirámide que queda dispuesta sobre la losa inferior (1 ) y el fuste (2 ) , material de relleno (4 ) que queda dispuesto en el espacio entre la losa inferior (1 ) , el fuste (2 ) Y la lámina superior (3) llenándolo total o parcialmente, unos primeros medios de unión (5) para unir la losa inferior(3) in the shape of a truncated cone or pyramid that is arranged on the lower slab (1) and the shaft (2), filling material (4) that is arranged in the space between the lower slab (1), the shaft (2) and the upper sheet (3), filling it totally or partially, first joining means (5) to join the lower slab
(1 ) , el fuste (2 ) y la lámina superior (3) que discurren por el interior del fuste (2 ) . (1), the shaft (2) and the upper sheet (3) that run inside the shaft (2).
2 . -Cimentación según la reivindicación 1 en la que el material de relleno (4 ) además queda dispuesto en el interior del fuste (2 ) llenándolo total o parcialmente . 2 . -Foundation according to claim 1 in which the filling material (4) is also arranged inside the shaft (2), filling it totally or partially.
3 . -Cimentación según la reivindicación 1 que además comprende unos segundos medios de unión ( 6) para unir la losa inferior (1 ) y la lámina superior (3) . 3 . -Foundation according to claim 1 which also comprises second joining means (6) to join the lower slab (1) and the upper sheet (3).
4 . -Cimentación según la reivindicación 1 en la que los primeros medios de unión (5) son una jaula de pernos . 4 . -Foundation according to claim 1 in which the first joining means (5) are a bolt cage.
5 . -Cimentación según la reivindicación 1 en la que el fuste5 . -Foundation according to claim 1 in which the shaft
(2 ) incluye un ensanchamiento inferior (2 .1 ) en correspondencia con la losa inferior (1 ) y/o un ensanchamiento superior (2 .2 ) en correspondencia con la lámina superior (3) . (2) includes a lower widening (2 .1) in correspondence with the lower slab (1) and/or an upper widening (2 .2) in correspondence with the upper sheet (3).
6.-Cimentación según la reivindicación 1 en la que la losa inferior (1), el fuste (2) y/o la lámina superior (3) incluyen refuerzos perimetrales (1.1, 2.3, 3.1) y/o radiales6.-Foundation according to claim 1 in which the lower slab (1), the shaft (2) and/or the upper sheet (3) include perimeter reinforcements (1.1, 2.3, 3.1) and/or radial reinforcements
(1.2, 2.4, 3.2) . (1.2, 2.4, 3.2) .
7.-Cimentación según la reivindicación 1 en la que la losa inferior (1), el fuste (2) y/o la lámina superior (3) son de espesor uniforme o variable. 7.-Foundation according to claim 1 in which the lower slab (1), the shaft (2) and/or the upper sheet (3) are of uniform or variable thickness.
8.-Cimentación según la reivindicación 1 en la que la lámina superior (3) presenta una abertura (3.3) configurada de tal manera que permite el acceso al interior del fuste (2) . 8.-Foundation according to claim 1 in which the upper sheet (3) has an opening (3.3) configured in such a way that it allows access to the interior of the shaft (2).
9.-Cimentación según la reivindicación 1 en que además comprende una lámina intermedia (7) que queda dispuesta entre la losa inferior (1) y la lámina superior (3) . 9.-Foundation according to claim 1 in which it also comprises an intermediate sheet (7) that is arranged between the lower slab (1) and the upper sheet (3).
10.-Cimentación según la reivindicación 1 en la que losa inferior (1) es una única pieza o está formada por una porción de cimentación existente (8) y una porción de losa inferior (9) . 10.-Foundation according to claim 1 in which the lower slab (1) is a single piece or is formed by an existing foundation portion (8) and a lower slab portion (9).
11.-Procedimiento de construcción de una cimentación para torres de aerogeneradores según la reivindicación 1 que comprende las siguientes etapas : 11.-Construction procedure of a foundation for wind turbine towers according to claim 1 that includes the following stages:
-excavación y preparación del terreno sobre el que queda dispuesta la cimentación; -excavation and preparation of the land on which the foundation is laid out;
-colocación de los primeros medios de unión (5) para unir la losa inferior (1), el fuste (2) y la lámina superior-placement of the first joining means (5) to join the lower slab (1), the shaft (2) and the upper sheet
(3); (3);
-colocación de la losa inferior (1); -placement of the lower slab (1);
-colocación del fuste (2); caracterizado por que además comprende las siguientes etapas en secuencia : -placement of the shaft (2); characterized in that it also includes the following stages in sequence:
-aportación del material de relleno (4 ) sobre la losa inferior (1 ) y alrededor del fuste (2 ) ; -provision of filling material (4) on the lower slab (1) and around the shaft (2);
-colocación de la lámina superior (3) , de manera que el material de relleno (4 ) llena total o parcialmente el espacio entre la losa inferior (1 ) , el fuste (2 ) y la lámina superior (3) . -placement of the upper sheet (3), so that the filling material (4) totally or partially fills the space between the lower slab (1), the shaft (2) and the upper sheet (3).
12 . -Procedimiento según la reivindicación 11 en el que con anterioridad a la colocación de la lámina superior (3) se aporta además material de relleno (4 ) al interior del fuste12. -Procedure according to claim 11 in which, prior to placing the upper sheet (3), filling material (4) is also provided to the inside of the shaft
(2) llenándolo total o parcialmente . (2) filling it totally or partially.
13 . -Procedimiento según la reivindicación 11 en el que tras la colocación de la lámina superior (3) se colocan los segundos medios de unión ( 6) para unir la losa inferior13. -Procedure according to claim 11 in which after placing the upper sheet (3) the second joining means (6) are placed to join the lower slab
(1) y la lámina superior (3) . (1) and the top sheet (3).
14 . -Procedimiento según la reivindicación 11 en el que con anterioridad a la aportación del material de relleno (4 ) se coloca la lámina intermedia (7 ) que, tras la aportación del material de relleno (4 ) y colocación de la lámina superior (3) , queda dispuesta entre la losa inferior (1 ) y la lámina superior (3) . 14. -Procedure according to claim 11 in which, prior to the contribution of the filling material (4), the intermediate sheet (7) is placed, which, after the contribution of the filling material (4) and placement of the upper sheet (3) , is arranged between the lower slab (1) and the upper sheet (3).
PCT/ES2023/070182 2022-03-30 2023-03-22 Foundation for wind generator towers and building method of said foundation WO2023187235A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020124502A1 (en) * 2000-09-27 2002-09-12 Henderson Allan P. Perimeter weighted foundation for wind turbines and the like
ES2347742A1 (en) * 2008-03-18 2010-11-03 GAMESA INNOVATION & TECHNOLOGY S.L. Foundation for a wind turbine
ES2396010T3 (en) * 2009-03-25 2013-02-18 Tiefbau-Gmbh "Unterweser" Foundation body for a wind power installation
ES2524840A1 (en) * 2014-06-06 2014-12-12 Esteyco Energía Foundation system for towers and installation procedure of the foundation system for towers (Machine-translation by Google Translate, not legally binding)
ES2835346A1 (en) * 2019-12-19 2021-06-22 Structural Design Eng Slu Concrete foundation for wind tower and method for its installation (Machine-translation by Google Translate, not legally binding)

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020124502A1 (en) * 2000-09-27 2002-09-12 Henderson Allan P. Perimeter weighted foundation for wind turbines and the like
ES2347742A1 (en) * 2008-03-18 2010-11-03 GAMESA INNOVATION & TECHNOLOGY S.L. Foundation for a wind turbine
ES2396010T3 (en) * 2009-03-25 2013-02-18 Tiefbau-Gmbh "Unterweser" Foundation body for a wind power installation
ES2524840A1 (en) * 2014-06-06 2014-12-12 Esteyco Energía Foundation system for towers and installation procedure of the foundation system for towers (Machine-translation by Google Translate, not legally binding)
ES2835346A1 (en) * 2019-12-19 2021-06-22 Structural Design Eng Slu Concrete foundation for wind tower and method for its installation (Machine-translation by Google Translate, not legally binding)

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