Patent Application
20200149300
The invention relates to a method for producing a concrete formwork for a component, in particular a tower segment for a tower, preferably a tower of a wind turbine, a method for producing at least two different concrete formworks for at least two different components, in particular at least two different tower segments for a tower, preferably a tower of a wind turbine, a method for producing a component, in particular a tower segment for a tower, preferably a tower of a wind turbine, a concrete formwork for a component, in particular a tower segment for a tower, preferably a tower of a wind turbine, a component, in particular a tower segment for a tower, preferably a tower of a wind turbine, a pattern of a component, in particular a tower segment for a tower, preferably a tower of a wind turbine, the use of a pattern for producing a concrete formwork for a component, in particular a tower segment for a tower, preferably a tower of a wind turbine, and the use of a concrete formwork for producing a component, in particular a tower segment for a tower, preferably a tower of a wind turbine.
Components, such as in particular tower segments for a tower of a wind turbine, are often produced from concrete, in particular reinforced concrete and/or prestressed concrete.
For producing such components, generally a formwork is used, serving the purpose of giving liquid or flowable concrete (also referred to as fresh concrete) its form. The formwork is generally removed after the hardening or curing of the concrete (unless it is a permanent formwork). Since the formwork generally surrounds the component to be produced, the dimensions of a formwork are sometimes very great. The transport of formworks is therefore often very laborious, in particular if formworks for large special components are to be transported. Since the formwork gives the component to be produced from concrete its form, corresponding precision is required when setting up the formwork, which often consists of a number of individual parts. With imprecise formwork, the components produced with it may not be usable, or only to a limited extent, and or extensive finishing work may be required. For large special components, special formwork constructions are often also fabricated, for example as steel constructions. While these are often distinguished by high precision, they are however usually expensive and/or laborious to transport and/or not very flexible in the sense that they are only suitable for producing one specific component and cannot be used for components that differ in their geometry. Furthermore, the procurement time for special formwork constructions is often very great, and consequently represents a restrictive factor in the production of large quantities of components.
The German Patent and Trademark Office has searched the following prior art in the priority application relating to the present application: DE 23 29 243 A1, DE 42 42 584 A1 and DE 10 2010 003 931 A1.
Provided is a method for producing a concrete formwork for a component, in particular a tower segment for a tower, preferably a tower of a wind turbine, a method for producing at least two different concrete formworks for at least two different components, in particular at least two different tower segments for a tower, preferably a tower of a wind turbine, a method for producing a component, in particular a tower segment for a tower, preferably a tower of a wind turbine, a concrete formwork for a component, in particular a tower segment for a tower, preferably a tower of a wind turbine, a component, in particular a tower segment for a tower, preferably a tower of a wind turbine, a pattern of a component, in particular a tower segment for a tower, preferably a tower of a wind turbine, a use of a pattern for producing a concrete formwork for a component, in particular a tower segment for a tower, preferably a tower of a wind turbine, and a use of a concrete formwork for producing a component, in particular a tower segment for a tower, preferably a tower of a wind turbine, that reduce or eliminate one or more of the disadvantages mentioned, in particular are improved and/or simplified and/or less expensive.
According to one aspect of the invention provided is a method for producing a concrete formwork for a component, in particular a tower segment for a tower, preferably a tower of a wind turbine, the method comprising providing a pattern of the component; erecting a production formwork around the pattern at a distance from the pattern, wherein a cavity produced between the production formwork and the pattern corresponds to the dimensions of the concrete formwork to be produced; filling the cavity with liquid concrete; hardening the concrete.
The method provides that a concrete formwork is produced for the component that is ultimately to be produced. The formwork for the component is consequently produced before the production process of this component, in that a concrete formwork is produced for the component. For this purpose, first a pattern of the component that is ultimately to be produced is required. A production formwork is erected around the pattern at a distance. Thus, a cavity is produced between the pattern and the production formwork. In particular, this cavity is delimited on at least one side by the pattern of the component and on at least one other side by the production formwork. The cavity is filled with liquid concrete, which is hardened. The concrete hardened in the cavity represents the concrete formwork with which components can be produced in the form of the pattern.
The invention is based inter alia on the realization that in this way a conventional formwork can be used as production formwork, in particular a formwork that is simple and/or inexpensive to set up and/or to transport. The production formwork does not have to meet any special requirements in terms of precision, since the production formwork is only relevant for the form of a rear side of the concrete formwork, which is facing away from the component to be produced with the concrete formwork. The side of the concrete formwork that is relevant for the form of the component to be produced with the concrete formwork is defined during the production of the concrete formwork by the pattern of the component.
It is therefore advantageous to use a pattern with great dimensional stability. For example, the pattern may be produced at a different location than the location at which the concrete formwork is produced. The pattern for a component can be simpler and/or easier and/or less expensive to transport than a formwork for producing the component. The method consequently makes it possible for example that patterns can be produced with high precision and transported to the location at which the components and/or the concrete formwork are to be produced. On account of the low requirements that the production formwork has to meet, production formwork for producing the concrete formwork can be put together and set up on site easily and inexpensively. For the dimensional stability of the component to be produced, the dimensional stability of the pattern is particularly relevant.
The production formwork consequently serves only for producing the concrete formwork, but not directly for producing the component. As also further described later, the component is produced by using the concrete formwork. Any number of components can be produced with the concrete formwork. Similarly, in turn, any number of concrete formworks can be produced with the pattern and the production formwork.
With the method described here, various advantages are obtained. The invention is used in particular for particularly large components with great dimensional accuracy, such as for example tower segments for a tower, in particular a tower of a wind turbine. Particularly large components are understood here as meaning in particular components with an end weight of over 10 tonnes, in particular over 25 tonnes, for example over 30 tonnes or over 50 tonnes. Particularly large components are also understood here as meaning in particular components in the form of rings or segments of a ring with a radius of at least 1 m, preferably at least 1.5 m, in particular at least 2 m and/or components in the form of segments of a ring with a radius of at least 2 m, preferably at least 3 m, in particular at least 4 m or at least 5 m.
For such particularly large components with great dimensional accuracy, such as for example tower segments for a tower, in particular a tower of a wind turbine, a correspondingly great dimensional accuracy of the formwork is required, which conventional formworks cannot provide. Formworks set up on site from individual formwork elements produce results that cannot be reproduced as well. Formworks of cured foam or the like do not offer sufficiently great dimensional accuracy for particularly large components, such as for example tower segments for a tower, in particular a tower of a wind turbine, in particular also not during the concreting process of the component to be produced. In the case of particularly large components, in particular large components in the form of rings or in the form of segments of a ring, high forces occur on the formwork during the concreting and hardening of the concrete, and in the case of formworks of cured foam or the like can for example lead to deformations. The invention is based inter alia on the realization that a concrete formwork and the method described herein are advantageous for this.
When reference is made in this description to the production formwork surrounding the pattern at a distance, this means in particular that the production formwork is at a distance on one or more sides of the pattern. In particular, it may be preferred that the production formwork does not surround the pattern completely, i.e., from all sides. For example, both the pattern and the production formwork may be arranged on a base. This base may for example be a formwork table and be regarded as part of the production formwork, but the base may also be something else, and for example not form part of the production formwork. The cavity formed between the pattern and the production formwork is consequently delimited at least on one side by the pattern and at least one other side by the production formwork. Further sides of the cavity may be delimited by other elements or else be open. In particular, it is preferred that an upwardly directed side of the cavity is at least partly open, while preferably liquid concrete can be introduced into the cavity through this open side of the cavity.
The production formwork may preferably rise up above the pattern in particular in the vertical direction. Furthermore, preferably the pattern may also rise up above the component to be produced with it in the vertical direction and or an extension element and/or a part of the production formwork may be arranged on the pattern. This serves in particular in the respect that, when producing the concrete formwork, the cavity does not have to be completely filled with liquid concrete in the upward direction, but instead an upward projection of the delimitation above the filling level of the concrete is realized.
Furthermore, it is preferred in particular to create a concrete formwork that rises up in the vertical direction above the component to be created with the concrete formwork. This has the advantage that, when producing a component by means of the concrete formwork, the cavity does not have to be completely filled with liquid concrete in the upward direction, but instead an upward projection of the concrete formwork above the filling level of the concrete is realized.
For a component for example in the form of a circular ring, a pattern correspondingly in the form of a circular ring is also used for producing a concrete formwork in the form of a circular ring. The concrete formwork may preferably have an inner portion in the form of a circular ring and an outer portion in the form of a circular ring, that is to say comprise two circular rings at a distance from one another. In the production of the concrete formwork, these two circular rings would be kept at a distance from one another by the pattern. In the production of a component by means of the concrete formwork, preferably the cavity between the two circular rings is filled with liquid concrete, which is intended to form the component later, after hardening.
For a component with the form of a segment of a circular ring, for example, preferably a corresponding pattern in the form of a segment of a circular ring is also used for producing a concrete formwork in the form of a segment of a circular ring. This concrete formwork preferably comprises an inner portion in the form of a segment of a circular ring and an outer portion in the form of a segment of a circular ring, between which the pattern is located during the production of the concrete formwork, and correspondingly, in the production of a component by means of the concrete formwork, the liquid concrete that is intended to form the component later, after the hardening, is introduced into the cavity between the two segments of a circular ring. Preferably, the end faces of the cavity between the pattern and the production formwork are delimited in the circumferential direction, so that in the production of the concrete formwork the liquid concrete cannot escape through the end faces in the circumferential direction. The delimitations of the end faces in the circumferential direction may be part of the production formwork. For example, the production formwork may be arranged such that it also extends at a distance from the end faces in the circumferential direction of the pattern, so that the concrete formwork also has corresponding end faces in the circumferential direction, which may in particular connect the inner portion and the outer portion of the concrete formwork.
Furthermore, in the later production of the component, the end faces are preferably delimited in the circumferential direction of the cavity between the inner portion and the outer portion of the concrete formwork, so that also in the production of the component the liquid concrete cannot escape through the end faces in the circumferential direction. As previously described, this can preferably be realized by the concrete formwork having end faces in the circumferential direction.
When reference is made in this description to a pattern and/or a component and/or a concrete formwork, this means in particular a first pattern and/or a first component and/or a first concrete formwork. Understood here as the component is in particular a tower segment for a tower, preferably a tower of a wind turbine. A tower segment may be a portion in the form of a ring of a tower, in particular a tower of a wind turbine. A tower segment may however also merely have the form of a segment of a circular ring, so that a portion in the form of a ring of a tower may be made up of a number of tower segments. A component or tower segment may also take the form of a panel or cuboid. The methods, features and aspects described here can similarly be applied to components or tower segments in the form of panels or cuboids. Terms such as circumferential direction or radius should then be correspondingly applied to a form of the component or tower segment in the form of a panel or cuboid, for example with regard to the thickness or longitudinal extent of the component or tower segment.
When reference is made in this description to liquid concrete, this means in particular liquid or flowable fresh concrete, in particular liquid or flowable fresh concrete of the quality that is required and/or desired for producing the concrete formwork and/or the component. In particular, the requirements for the properties of the concrete for producing the concrete formwork on the one hand and the component on the other hand may differ, so that concrete of different qualities and/or with different properties are used for the concrete formwork and the component.
Preferably, the method for producing a concrete formwork for a component is also characterized by removing the production formwork. The production formwork may preferably be removed from the concrete formwork after the hardening of the concrete of the concrete formwork. This may take place for example by transporting and/or detaching the production formwork and/or transporting the hardened concrete formwork.
Preferably, the method for producing a concrete formwork for a component is also characterized by removing the pattern. Preferably, the pattern is removed after the hardening of the concrete of the concrete formwork. This may take place for example by transporting the pattern and/or transporting the hardened concrete formwork. Preferably, as also described further below, the concrete formwork may be separated into two or more parts. Preferably, the concrete formwork and/or parts thereof may be moved, for example by means of hydraulics or by lifting with a crane, in particular in order to strip the pattern (or a component produced later with the formwork).
Furthermore, the method for producing a concrete formwork for a component is preferably developed further by: coating the surfaces facing the pattern in the production of the concrete formwork with an anti-adhesion coating.
Preferably, one of, some of or all of the surfaces of the concrete formwork that are facing the pattern in the production of the concrete formwork are coated with an anti-adhesion coating. This serves in particular in the respect that, in later production of a component with the concrete formwork, adhesive attachment of the concrete of the component to the concrete of the concrete formwork can be prevented or reduced.
The coating with an anti-adhesion coating may for example take place after the hardening of the concrete, possibly after the removal of the pattern. For example, the coating with an anti-adhesion coating may take place by applying a coating material, such as for example a concrete release agent, a lacquer, in particular a PU-based dye, a film, or the like. Examples of concrete release agents are for instance water-soluble formwork oils, water-insoluble formwork oils, formwork pastes, formwork waxes and chemically reactive release agents. Concrete release agents are generally used in order to reduce the adhesion between the concrete and the formwork. In conventional formworks that do not have concrete surfaces, applying the release agent generally has the effect of reducing the water absorbency of the formwork skin, and consequently achieves a closing of the pores or a reduction of the pores.
The coating with an anti-adhesion coating may also be realized by a coating material, for example in the form of a film, a mat or the like, being introduced before or while liquid concrete is filled or is being filled into the cavity between the production formwork and the pattern, on the side of the cavity that is facing the pattern.
Furthermore, the method for producing a concrete formwork for a component is preferably developed further by: coating the surfaces facing the pattern in the production of the concrete formwork with a primer coating and subsequently with an anti-adhesion coating. Preferably, a first coating material, for example a lacquer, may be applied as a primer coating to some of or all of the surfaces of the concrete formwork that are facing the pattern in the production of the concrete formwork. Subsequently, preferably a second coating material, in particular different from the first, for example a concrete release agent or anti-adhesion coating, is applied to some of or all of the surfaces of the concrete formwork that are facing the pattern in the production of the concrete formwork. This is preferred in particular in order to prepare the surfaces in such a way that for example concrete release agents adhere to the primer coating, since concrete release agents generally do not adhere well to concrete surfaces.
In a preferred embodiment of the method for producing a concrete formwork for a component, it is provided that the dimensions of the pattern are increased in comparision with the component to be produced with the concrete formwork by a shrinkage allowance for the concrete. During the hardening, the liquid concrete changes its volume, in particular by giving off moisture (drying out) and by chemical reactions or structural changes. This reduction in volume is also referred to as shrinkage, the degree or size of the reduction in volume being referred to as the shrinkage allowance. In order that a component of the desired dimensions can be produced by means of the concrete formwork, it is preferred that the pattern for producing the concrete formwork is larger in comparison with the component to be produced with the concrete formwork, for example by the shrinkage allowance for the concrete, preferably the concrete that is used for producing the component. Preferably, it may additionally be taken into account in the dimensioning of the pattern that the concrete of the concrete formwork also shrinks during hardening. Therefore, it may for example be provided that, although the pattern is larger than the component to be produced with it, it is reduced by a fraction that is compensated by the shrinkage of the concrete formwork. It is thus preferred that the dimensions of the pattern are increased in comparison with the component to be produced with the concrete formwork by an amount that takes into account shrinkage allowances for the concrete both of the concrete formwork and of the component to be produced with the concrete formwork. The shrinkage allowances for the concrete are in particular also dependent on the geometry of the component. For example, when taking into account the shrinkage allowances for the concrete, account should also be taken of the wall thickness, the quality of the concrete used, the surroundings (for example air humidity, temperature, etc.) during the drying of the concrete, and the like. In the case of high-strength concretes, a shrinkage allowance of about 0.3 mm/m of wall thickness may for example be taken.
Furthermore, it is preferred that the method for producing a concrete formwork for a component is characterized in that it comprises arranging rails on the concrete formwork. Rails may be used for example for arranging a grinding machine, in order preferably to machine an upper flange. In particular, it is preferred that the rails are anchored on the concrete formwork.
A preferred development of the method for producing a concrete formwork for a component provides that inserts are arranged at one, two or more locations. In particular, it is preferred that inserts are arranged in regions of edges, corners, clearances and similar geometries. The inserts are preferably formed from a metal material, in particular steel, or comprise such a material. The inserts may for example be formed as a two-dimensional element, in particular as a metal sheet. Such inserts may for example prevent or at least reduce the partial or complete breaking off of certain locations.
Preferably, the method for producing a concrete formwork for a component is also characterized by reinforcing the cavity with a reinforcement and/or introducing auxiliary means for the use and/or transport of the concrete formwork to be produced. Preferably, before the filling of the cavity with liquid concrete, a reinforcement and/or auxiliary means for the use and/or transport of the concrete formwork may be introduced into the cavity. The reinforcement and/or the auxiliary means may for example also be produced and/or provided (entirely or partially) in advance and the production formwork and the pattern arranged alongside the reinforcement and/or the auxiliary means, to create the corresponding cavity. The reinforcement may for example also be provided as a prefabricated reinforcement cage. The auxiliary means for the use and/or transport of the concrete formwork may for example comprise lifting anchors, sleeve dowels or the like. The auxiliary means may for example be fastened on the reinforcement.
A preferred development of the method for producing a concrete formwork for a component is distinguished by the fact that the reinforcement consists of steel or comprises steel; and/or the reinforcement consists of textile structures or comprises textile structures; and/or the reinforcement consists of glass-fiber reinforced plastic or comprises glass-fiber reinforced plastic; and/or the reinforcement consists of fiber fabric, in particular glass-fiber and/or synthetic-fiber fabric, or comprises fiber fabric, in particular glass-fiber and/or synthetic-fiber fabric. The textile structures and/or the fiber fabric may for example comprise or consist of carbon fibers and/or alkali-resistant fibers.
According to a preferred embodiment of the method for producing a concrete formwork for a component, it is provided that the concrete formwork comprises two portions, in particular an inner portion and an outer portion, which may be produced at the same time or one after the other. As already explained above, the inner portion and the outer portion may take the form of circular rings or have the form of a segment of a circular ring. Furthermore, the concrete formwork may also have more than two portions. For example, an inner portion and an outer portion in the form of segments of a circular ring may be connected by connecting portions at the circumferential surface of the end sides.
It is also preferred that the method for producing a concrete formwork for a component is characterized by separating the concrete formwork into two or more partial concrete formworks. It may be preferred to separate the concrete formwork into two or more partial concrete formworks, in particular after the hardening of the concrete, for example in order to be able to transport or store the concrete formwork more easily and/or be able to strip the pattern or a component produced with the concrete formwork more easily. A separation of the concrete formwork may take place in particular in the horizontal direction and/or vertical direction and/or radial direction and/or circumferential direction. Preferably, the concrete formwork has two separating locations, which may be located in particular on opposite regions of the concrete formwork. With respect to the concrete formwork of a circular form, with two separating locations, they are preferably located in a region at 0 degrees and at 180 degrees. Such concrete formworks may be used for example for full segments and/or for half-segments. Furthermore, it may be preferred to provide three or more separating locations on the concrete formwork. With respect to a concrete formwork of a circular form, with three separating locations, they are preferably located in a region at 0 degrees, at 120 degrees and at 240 degrees.
A further preferred development of the method for producing a concrete formwork for a component is distinguished by the fact that the production formwork is formed as concrete formwork and/or fixed formwork and/or timber formwork and/or girder formwork and/or panel formwork and/or permanent formwork and/or single-face formwork and/or double-face formwork and/or freeform formwork and/or round formwork; and/or the production formwork has dimensions that are suitable for road transport. As also already mentioned above, the production formwork merely serves for forming a side of the concrete formwork that is facing away from the component to be produced with the concrete formwork. This side of the concrete formwork that is facing away from the component to be produced is not relevant for the dimensional stability of the component. Therefore, any desired formwork may be used as production formwork, as long as it makes production of the concrete formwork possible. In particular, the type of production formwork may be adapted to the circumstances on site with regard to availability and/or costs.
It is also provided that the pattern consists of steel and/or comprises steel; and/or the pattern consists of a steel alloy and/or comprises a steel alloy; and/or the pattern has dimensions that are suitable for road transport, and/or the pattern can be made up from two or more partial patterns, and the two or more partial patterns have in each case dimensions that are suitable for road transport. Furthermore, it may be preferred that the pattern consists of aluminum, and/or of a composite material, in particular glass-fiber and/or carbon-fiber reinforced plastic, or comprises aluminum, and/or a composite material, in particular a glass-fiber and/or carbon-fiber reinforced plastic. These refinements are preferred in order to ensure a great dimensional stability of the pattern, in particular also in the case of multiple use for the production of concrete formworks, and/or in order to facilitate transport of the pattern, in particular even over relatively great distances. The dimensional stability of the pattern preferably has to meet high requirements, it may be preferred to produce patterns centrally and/or at a location particularly qualified to do so and transport them to the location at which components corresponding to the pattern are to be produced, for which purpose first a concrete formwork is created. A form of the pattern with great dimensional stability and/or favorable transporting dimensions is consequently advantageous. Preferably, the pattern is formed as a hollow element, possibly with internal supporting struts and/or a filling of some other material, in particular lightweight and/or rigid material. This allows the weight of the pattern to be reduced.
According to a further aspect of the invention, provided is a method for producing at least two different concrete formworks for at least two different components, in particular at least two different tower segments for a tower, preferably a tower of a wind turbine, the method comprising producing a first concrete formwork by the previously described method; providing a second pattern of a second component, which is different from the first; erecting the production formwork, previously used for the production of the first concrete formwork, around the second pattern at a distance from the second pattern, wherein a cavity produced between the production formwork and the second pattern corresponds to the dimensions of the second concrete formwork to be produced; filling the cavity with liquid concrete; hardening the concrete.
According to this aspect of the invention, the same production formwork is used for producing concrete formworks for different components, in particular components that are different with regard to their geometry, such as for example tower segments with a different radius and/or different taper for installing at different tower heights. However, the patterns used for the first concrete formwork and for the second concrete formwork differ, and the components to be produced with the first concrete formwork and with the second concrete formwork differ. The production formwork can be used unchanged or identically for producing both concrete formworks, in particular if the differences with regard to the geometry of the two patterns are minor. However, modifications to the production formwork may also be performed, for example one more or one fewer formwork element may be used in the case of a round formwork, depending on which radius of the polygon of the round formwork is to be achieved. Otherwise, the method for producing concrete formworks for different components may be developed according to the developments of the previously described method for producing a concrete formwork.
According to a further aspect of the invention, provided is a method for producing a component, in particular a tower segment for a tower, preferably a tower of a wind turbine, the method comprising providing a concrete formwork produced by the previously described method; filling a cavity formed by the concrete formwork with liquid concrete; hardening the concrete.
The provision of a concrete formwork produced by the previously described methods possibly comprises producing and/or transporting the concrete formwork. The features and details described with reference to the method for producing the concrete formwork that are also relevant and/or advantageous for the production of a component apply similarly with reference to the method for producing a component.
According to a preferred embodiment, it is provided that the method for producing a component is characterized by removing the concrete formwork; and/or reinforcing the cavity with a reinforcement; and/or introducing guides for tensioning wires and/or lines and/or cables into the cavity; and/or finishing, in particular grinding and/or coating, the component.
The guides may for example be formed as empty tubes. The reinforcement of the cavity and/or the introduction of guides preferably takes place before the filling of the cavity with liquid concrete. Finishing of the component preferably takes place after the stripping of the component, in particular after the removal of the concrete formwork.
According to a further aspect of the invention, provided is a concrete formwork for a component, in particular a tower segment for a tower, preferably a tower of a wind turbine, characterized in that the concrete formwork was produced in a previously described method.
The concrete formwork is distinguished in particular by the fact that it has a structured surface on an outer circumferential surface, which in the production process is facing the production formwork. The structured surface may in particular have a structure of a coarse-pored concrete. For example, the structured surface could comprise the negative of voids. In particular, the surface may have a finish that is different from a metal surface. Furthermore, the surface may have impressions, in particular vertically extending impressions, which are caused by the butt joint of two elements of the production formwork. In addition, the outer circumferential geometry of the concrete formwork may have an unround, and/or oval, and/or angular form.
According to a further aspect of the invention, provided is a component, in particular a tower segment for a tower, preferably a tower of a wind turbine, characterized in that the component was produced in a previously described method and/or by using a previously described concrete formwork.
The component produced in a previously described method and/or by using a previously described concrete formwork may for example be distinguished by two or more negative locations of butt joints, wherein two elements of the concrete formwork are or were arranged against one another at the butt joints.
According to a further aspect of the invention, provided is a component, in particular a tower segment for a tower, preferably a tower of a wind turbine, characterized in that the dimensions of the pattern are increased in comparision with the component to be produced with the concrete formwork by a shrinkage allowance for the concrete.
According to a preferred embodiment of the pattern, it is provided that the pattern consists of steel and/or comprises steel; and/or the pattern consists of a steel alloy and/or comprises a steel alloy; and/or the pattern has dimensions that are suitable for road transport; and/or the pattern can be made up from two or more partial patterns, and the two or more partial patterns have in each case dimensions that are suitable for road transport.
According to a further aspect of the invention, provided is a use of a previously described pattern for producing a concrete formwork for a component, in particular a tower segment for a tower, preferably a tower of a wind turbine.
According to a further aspect of the invention, provided is a use of a concrete formwork, in particular a previously described concrete formwork for producing a component, in particular a tower segment for a tower, preferably a tower of a wind turbine.
For the advantages, configurational variants and configurational details of the respective further aspects of the inventions and their possible developments, reference is also made in particular to the foregoing description in relation to the corresponding features of the other aspects of the invention.
Further advantageous configurational variants of the methods and devices according to the invention are obtained by combining the preferred features discussed here.
Preferred embodiments of the invention are described by way of example on the basis of the accompanying figures, in which:
The schematic representation of an embodiment, given by way of example, of the method according to the invention for producing a concrete formwork for a component, in particular a tower segment for a tower of a wind turbine according to
As can be seen in
In the production of the concrete formwork 500, the surfaces 501a, 502a are facing the pattern 200 and, in the production of the component 800, facing the component 800 or previously the cavity 700 (see
The dimensional stability of the component 800 to be produced with the concrete formwork 500 is influenced by the surfaces 501a, 502a facing the pattern 200 in the production of the concrete formwork 500, not by the surfaces facing the production formwork 300 in the production of the concrete formwork 500. Therefore, a simple formwork that meets lower requirements for precision can be used for the production formwork 300. By contrast, the pattern 200, which is produced with the greatest possible dimensional stability, can preferably be reused for producing any number of concrete formworks 500, and on account of the transport dimensions can preferably be transported even over relatively long distances.
Shown in
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2017 115 141.9 | Jul 2017 | DE | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2018/068359 | 7/6/2018 | WO | 00 |
