Tower for a wind turbine, damping device and use of a damping device for a tower for a wind turbine

Abstract

The invention relates to a tower (1) for a wind turbine, comprising at least one concrete tower section (2), wherein the concrete tower section (2) has an outer wall (7), an inner wall (8) and a concrete cross section (9) that is arranged in between. The concrete tower section (2) is prestressed between a head bearing (10) and a base bearing (12) by way of at least one vertical tensioning element (13), wherein the vertical tensioning element (13) runs outside the concrete cross section (9) of the concrete tower section (2) in an interior (14) of the concrete tower section (2). The vertical tensioning element (13) is fastened to the inner wall (8) of the concrete tower section (2) by means of at least one damping device (15).

Description

[0001] 1 BOE-11275a-24

[0002] December 10, 2025

[0003] Tower for a wind turbine, damping device and use of a damping device for a tower for a wind turbine

[0004] The present invention relates to a tower for a wind turbine comprising at least one concrete tower section, wherein the concrete tower section has an outer wall, an inner wall, and an intermediate concrete cross-section. The concrete tower section is prestressed between a top support, in particular a transition piece, and a bottom support, in particular a foundation, by at least one vertical tendon, wherein the vertical tendon extends outside the concrete cross-section of the concrete tower section within an interior space of the concrete tower section. The invention further relates to a damping device for a tower for a wind turbine and the use of such a damping device for such a tower.

[0005] From DE 10 2016 115 042 A1, a tower for a wind turbine is known, comprising a concrete tower section and a steel tower section. The concrete tower section is constructed from precast concrete elements and prestressed with tendons running externally, i.e., outside the concrete cross-section, between a top bearing and a bottom bearing. The concrete tower section has at least one projection integrally formed with the tower section on its inner wall between the top bearing and the bottom bearing. The tendons rest against this projection but run spaced apart from the wall in the remaining area of ​​the tower. This allows the tendons to be fixed to a certain extent by friction against the projection on the inner wall. This can at least partially reduce undesirable vibrations of the tendons.

[0006] The object of the present invention is to propose a tower for a wind turbine which enables improved vibration damping of the tendons. Furthermore, a corresponding damping device is to be proposed.

[0007] The problem is solved by a tower, a damping device, and the use of a damping device having the features of the independent claims. 2 BOE-11275a-24

[0008] December 10, 2025

[0009] A tower for a wind turbine comprises at least one concrete tower section, which has an outer wall, an inner wall, and an intermediate concrete cross-section. The concrete tower section is prestressed between a top support, in particular a transition piece, and a bottom support, in particular a foundation, by at least one vertical tendon. The vertical tendon runs outside the concrete cross-section of the concrete tower section within an interior space of the concrete tower section.

[0010] For such a tower, it is proposed that the vertical tendon be attached to the inner wall of the concrete tower section by means of at least one damping device. This not only reduces the free vibration length of the vertical tendons, as in the prior art, but also reduces or even eliminates vibrations of the vertical tendons. Attaching the damping device to the tower wall, or attaching the vertical tendons to the tower structure using the damping device, allows for particularly good and reliable damping.

[0011] It is advantageous if the damping device is arranged in a central range between 30% and 70% of the height of the concrete tower section, preferably between 40% and 60%, and particularly preferably between 45% and 55%. The greatest movements of the vertical tendons generally occur in this range, making a damping device in this area particularly effective for vibration damping. It is especially advantageous if the at least one damping device is arranged centrally between the head bearing and the foot bearing.

[0012] According to another embodiment, it is advantageous if the at least one damping device is arranged in a lower region, up to 40% of the height of the concrete tower section, preferably in a region between 10% and 30% of the height, and particularly preferably between 20% and 30% of the height. Significant movements of the vertical tendons also occur in this region, so that an arrangement of the damping device in this region is also advantageous. 3 BOE-11275a-24

[0013] This arrangement enables effective vibration damping. A particular advantage of this configuration is that the damping device can be more easily mounted in the lower section of the tower than in the middle or upper section. Furthermore, the damping device is also more easily accessible for maintenance and replacement. This allows for comparatively inexpensive installation of the damping device.

[0014] Furthermore, it is advantageous if the damping device, in particular a damping element of the damping device, comprises at least one friction damper. It is especially advantageous that damping is possible from the very first movement, or that the damping device is activated immediately from the first movement. This allows for particularly effective damping. In addition, friction dampers can be designed to be particularly compact and can therefore also be used with vertical tendons that run relatively close to the tower wall. Moreover, friction dampers conveniently allow for the attachment of several vertical tendons arranged side by side to the tower wall using a damping device for each. Viscous dampers can also be used in principle.

[0015] It also offers advantages if at least one friction damper is designed as a scissor damper. Such a scissor damper has a simple design and allows for easy adjustment of the damping effect. Furthermore, a scissor damper has limited movement of its scissor elements. In the case of a scissor damper with two pairs of scissor elements arranged in the form of a parallelogram or a rhombus, for example, the movement is limited by the contact of the joints when the rhombus is folded completely flat or at a very steep angle. This advantageously limits the movement of the vertical tendons, thereby reducing bending stresses on them.

[0016] It is also advantageous if a friction pair of the damping device, in particular a damping element of the damping device, is spring-loaded. This allows a consistent damping effect of the damping device to be achieved. 4 BOE-11275a-24

[0017] December 10, 2025

[0018] Preferably, the scissor damper comprises at least two friction pairs. This significantly increases the damping effect while requiring comparatively little space. It is therefore particularly preferred if the scissor damper has at least four friction pairs. This allows the scissor damper to be designed, for example, as a double scissor damper.

[0019] A key advantage of scissor dampers is their significantly greater flexibility in terms of effective length and tolerance compensation compared to viscous dampers, because by simply changing the length of individual components of the scissor dampers, the effective range and application range can be effectively varied over a wide area.

[0020] It is also advantageous if the damping effect of at least one damping device is adjustable. This allows the damping device to be adapted, for example, depending on its mounting location or on the height of the tower or the length of the vertical tendons. In the case of a scissor damper, this can be achieved, for example, by increasing or decreasing the pressure on the friction surfaces of the scissor damper, thereby increasing or decreasing the damping frictional forces.

[0021] It is also advantageous if the direction of action of at least one damping device is adjustable. According to one embodiment, this can be achieved by the orientation of the damping device, in particular a damping element of the damping device. For example, depending on its orientation during installation, one and the same damping device can dampen either radial vibrations or a larger proportion of radial vibrations, or tangential vibrations or a larger proportion of tangential vibrations of the vertical tendons. Similarly, a damping element of the damping device can also be mounted in different positions to adjust the direction of action.

[0022] Furthermore, it is advantageous if the at least one damping device includes at least one limiting element that limits the movement of the at least one vertical tendon in at least one direction of movement. If the movement of the vertical tendons is limited in at least one direction of movement, then the 5 BOE-11275a-24

[0023] December 10, 2025

[0024] Bending stresses on the vertical tendons are reduced, and material fatigue and other damage can be prevented. Furthermore, such limiting elements can be used to restrict tendon movement in specific areas to protect the damping elements.

[0025] Furthermore, it is advantageous if the damping device comprises two damping elements, in particular two friction dampers. This can, for example, serve to increase the damping effect. It is especially advantageous, however, if the two damping elements are arranged at an angle to each other. This allows the two damping elements to dampen vibrations or vibration components of different directions, while still being advantageously combined in a single damping device. Preferably, the two damping elements are arranged at an angle between 60° and 100°, and particularly preferably at right angles to each other. The friction dampers can preferably be designed as scissor dampers, which can be arranged on the vertical tension member in either a horizontal or vertical orientation.

[0026] It is also advantageous if the two damping elements have different directions of action, preferably one acting tangentially and the other radially. This allows the damping device with the two damping elements to effectively absorb both radial and tangential vibrations in the horizontal plane. This can also be achieved, for example, by arranging the two damping elements at an angle to each other.

[0027] It is also advantageous if the two damping elements are attached to the vertical tendon at different heights. This prevents collisions between the damping elements of the damping device, even with larger deflections of the vertical tendons. Each of the two damping elements can be attached to the vertical tendon using its own separate fastening element.

[0028] Furthermore, it is advantageous if the two damping elements are attached to the vertical tendon by means of a common fastening element. The two 6 BOE-11275a-24

[0029] December 10, 2025

[0030] The damping elements thus form a compact damping device which is particularly easy to install. Only separate fastening of the two damping elements is then required on the tower side.

[0031] It is also advantageous if the damping effect of the two damping elements can be adjusted independently of each other. This allows for optimal adaptation of the damping effect to the local conditions. For example, in vertical tendons that are frequently subjected to tangential vibrations, the damping effect of the damping element that acts predominantly in the tangential direction can be increased, and vice versa.

[0032] It is also advantageous if the damping device and / or the damping elements of the damping device are attached to the tower wall by means of a swivel bearing. This allows the damping device or the damping elements of the damping device to align themselves freely according to the direction of the vibrations occurring, thereby damping a greater or lesser proportion of the vibrations in any case.

[0033] It is also advantageous if the swivel bearing has damping. This prevents further vibrations from occurring when aligning the damping device.

[0034] It also offers advantages if the vertical tendon is attached to the inner wall of the concrete tower section by means of several damping devices arranged at different heights. This allows for a particularly good reduction of unwanted vibrations in the vertical tendons. It is especially advantageous if the several damping devices are arranged at equal intervals.

[0035] It is also advantageous if the concrete tower section is prestressed with several vertical tendons. Typically, several vertical tendons are arranged evenly distributed around the inner circumference of the concrete tower section to achieve uniform prestressing. 7 BOE-11275a-24

[0036] December 10, 2025

[0037] It is also advantageous if several vertical tendons, especially two vertical tendons at a time, are attached to the inner wall of the concrete tower section by means of one or more common damping devices. This reduces the number of damping devices required for the tower and also the assembly effort, thus enabling cost-effective tower construction.

[0038] The aforementioned advantages can also be achieved with a damping device for such a tower for a wind turbine, for which protection is also required.

[0039] Protection is also claimed for the use of a damping device with at least one of the prescribed features for such a tower of a wind turbine.

[0040] Further advantages of the invention are described in the following exemplary embodiments. These show:

[0041] Figure 1 shows a tower for a wind turbine in a schematic, perspective overview view.

[0042] Figure 2 shows a tower for a wind turbine with external vertical tendons and a damping device in a schematic, cutaway side view.

[0043] Figure 3 shows a tower for a wind turbine with external vertical tendons and several damping devices in a schematic, cutaway side view.

[0044] Figure 4 shows a schematic, abbreviated, cut side view of a concrete tower section with a vertical tendon and a damping device according to a first embodiment, 8 BOE-1 1275a-24

[0045] December 10, 2025

[0046] Figure 5 shows a schematic, abbreviated, cut side view of a concrete tower section with a vertical tendon and a damping device according to a second embodiment.

[0047] Figure 6 shows a schematic, abbreviated, cut side view of a concrete tower section with a vertical tendon and a damping device according to a further embodiment.

[0048] Figure 7 shows a schematic, abbreviated, cut-out top view of a concrete tower section with a vertical tendon and a damping device with two damping elements.

[0049] Figure 8 shows a schematic top view of a damping device with two damping elements according to a further embodiment.

[0050] Figure 9 shows a schematic top view of a damping device with two damping elements according to a further embodiment.

[0051] Figure 10 shows a schematic, abbreviated, cut side view of a concrete tower section with a vertical tendon and a damping device with two damping elements according to an alternative embodiment.

[0052] Figure 11 shows a schematic, abbreviated, cut side view of a concrete tower section with a vertical tendon and a damping device with two damping elements according to a further, alternative embodiment, as well as

[0053] Figure 12 shows a schematic, abbreviated, cut side view of a concrete tower section with a vertical tendon and a damping device with a damping element and a limiting element.

[0054] In the following description of the exemplary embodiments, features that are identical in their design and / or mode of operation in the various figures and / or 9 BOE-11275a-24

[0055] The examples shown are comparable to those shown on December 10, 2025, and are each provided with the same reference numerals. Furthermore, features are usually only explained in detail upon their initial mention, while subsequent embodiments only address the differences compared to those already described. Unless features are explained in detail again, their design and / or function correspond to the design and function of the features already described with reference to one or more of the preceding figures. For the sake of clarity, often only one or a few identical components or features are labeled.

[0056] Figure 1 shows a tower 1 for a wind turbine with at least one concrete tower section 2. The tower 1 shown here comprises a concrete tower section 2 and a steel tower section 3 arranged above it. A transition piece 1 is arranged between the concrete tower section 2 and the steel tower section 3, serving to connect the concrete tower section 2 to the steel tower section 3. This configuration is, however, only an example. It would also be conceivable for a tower 1 to have several concrete tower sections. The concrete tower section 2 shown here is also made up of a multitude of precast concrete elements 4 arranged one above the other and next to each other. However, contrary to the illustration shown, it would also be conceivable for the concrete tower section 2 to be made of cast-in-place concrete. The steel tower section 3 shown here is composed of several steel tube sections 5, which is also only an example.Furthermore, tower 1 has a foundation 6. The concrete tower sections 2 of such towers 1 are generally prestressed, which is possible both with external tendons, i.e., running outside the concrete cross-section 9 (see Figure 2), and with internal tendons.

[0057] Figure 2 shows a schematic, sectioned side view of a concrete tower section 2 for a tower 1 (see Figure 1) of a wind turbine. Several precast concrete elements 4 of the concrete tower section 2 are visible. This concrete tower section 2 could also be cast in place. The concrete tower section 2 has an outer wall 7, an inner wall 8, and an intermediate concrete cross-section 9. The concrete tower section 2 is supported between a top bearing 10 and a bottom bearing 12 by at least one, and in this case several, vertical tendons 13. 10 BOE-11275a-24

[0058] The head bearing 10 is prestressed on December 10, 2025. According to the present example, the head bearing 10 is designed as a transition piece 11 between the concrete tower section 2 and the steel tower section 3 (not shown). Similarly, the base bearing 12 is designed in this example by a foundation 6. However, it would also be conceivable that such a concrete tower section 2 is not located directly on the foundation 6, but further up within the tower 1, and accordingly not on the foundation 6, but on a different base bearing 12. Likewise, the head bearing 10 does not necessarily have to be designed by such a transition piece 11.

[0059] The vertical tendons 13 run outside the concrete cross-section 9 in an interior space 14 of the concrete tower section 2 between the head bearing 10 and the base bearing 12 and are anchored to these bearings. The vertical tendons 13 are therefore prone to transverse vibrations, which, due to the dynamic loads of a wind turbine and the length of the vertical tendons 13, can reach a considerable magnitude.

[0060] It is therefore proposed to attach at least one vertical tendon 13 to the inner wall 8 of the concrete tower section 2 by means of at least one damping device 15. Unlike prior art, where tendons were guided, for example, over a deflection saddle or a projection, this method not only reduces the free oscillation length of the vertical tendons 13, but also reduces the oscillations themselves. According to the present example, each vertical tendon 13 is attached to a damping device 15 located in a central region of the height H of the concrete tower section 2. These damping devices can dampen movements of the vertical tendons 13 in the horizontal plane, in particular radial and tangential movements of the vertical tendons 13, as well as combinations thereof. This allows for particularly effective vibration damping in the region of maximum deflection of the vertical tendons 13.

[0061] Figure 3, in contrast, shows another embodiment of a concrete tower section 2, in which the vertical tendons 13 are attached to the inner wall 8 not only with one damping device 15, but with several damping devices 15 distributed over the height H of the concrete tower section 2. In this case, three damping devices 15 are provided, one in a central area, one in 11 BOE-11275a-24

[0062] December 10, 2025, is provided for in a lower third and an upper third of the height H of the concrete tower section 2. This is also only to be understood as an example and is particularly advantageous for very tall concrete tower sections 2 with very long vertical tendons 13.

[0063] To reduce the effort and costs associated with the installation and maintenance of the damping devices 15, it is generally advantageous to provide only a few damping devices 15, or even just one damping device 15, per tendon. Alternatively or additionally, it is also advantageous with regard to effort and costs if the damping device 15 is located in an easily accessible area of ​​the concrete tower section 2. Therefore, contrary to the illustration shown in Figures 2 and 3, it would also be conceivable to attach each vertical tendon 13 to the inner wall 8 with only one damping device 15, with the attachment taking place in a lower area of ​​the concrete tower section 2. It is advantageous, for example, if the attachment is made at a height of no more than 40%, and preferably no more than 30%, of the height H of the concrete tower section 2.Alternatively or additionally, it would also be conceivable, for example, to attach two or three vertical tendons 13 to the inner wall 8 by means of one or more common damping devices 15.

[0064] Figure 4 shows a concrete tower section 2 with a damping device 15 according to a first embodiment in a schematic, abbreviated, and cutaway side view. It can be seen that the damping device 15 is directly connected to the vertical tendon 13 by means of a fastening element 20. The fastening element 20 can, for example, be in the form of a mounting clamp that encloses the vertical tendon 13. The damping device 15 is attached to the inner wall 8 by means of a fastening piece 21. The damping device 15 has a damping element 19, which can, for example, be designed as a friction damper 16 or as a viscous damper and is shown here only schematically.

[0065] In the present example, the damping device 15 is mounted essentially perpendicular to the inner wall 8 and can primarily dampen vibrations in the radial direction RR. However, the damping device 15 could also be mounted at an angle to the 12 BOE-11275a-24

[0066] December 10, 2025

[0067] The damping device 15 is mounted on the inner wall 8 and thus also absorbs vibrations or at least vibration components in the tangential direction. The direction of action of the damping device 15 or the damping element 19 can therefore be adjusted by aligning the damping device 15, in particular the damping element 19, with respect to the inner wall 8. It is advantageous if the damping device 15, as further illustrated in Figures 7-11, is movably arranged with respect to the inner wall 8 and / or the vertical tension member 13. This allows the damping device 15 to align itself freely and thus also absorb vibrations or vibration components in other directions.

[0068] Figure 5 shows another embodiment of a damping device 15 with a concrete tower section 2 in a schematic, abbreviated, cutaway side view. In contrast to Figure 4, the damping element 19 of the damping device shown here is designed as a friction damper 16. According to the present example, the friction damper 16 is also designed as a scissor damper 17. Such a friction damper 16, particularly in the embodiment as a scissor damper 17, can be designed to be particularly compact and can therefore be easily mounted in the space between the inner wall 8 and the vertical tendon 13. It is also particularly advantageous that the damping effect of such scissor dampers 17 can be adjusted in a particularly simple manner. The scissor damper 17 shown here has only one pair of scissor elements 22.This friction damper 16 is also arranged in such a way that it can primarily dampen vibrations in the radial direction RR, but can also act in other directions by means of a movable or articulated arrangement on the inner wall 8 and / or on the vertical tension member 13.

[0069] Figure 6 shows another embodiment of a damping device 15, which also includes a friction damper 16 in the form of a scissor damper 17 as a damping element 19. In contrast to the embodiment of Figure 6, this one has two pairs of scissor elements 22, which are arranged in the form of a parallelogram. The friction damper 16 thus has more friction surfaces and can therefore achieve a significantly greater damping effect in the same space. Otherwise, the damping device 15 corresponds to the damping device 15 of Figure 5, so the descriptions therein apply accordingly. 13 BOE-11275a-24

[0070] December 10, 2025

[0071] Figure 7 shows a schematic, abbreviated, sectioned top view of a concrete tower section 2 with a vertical tendon 13 and a damping device 15. In contrast to Figures 4-6, the damping device 15 shown here comprises not one, but two damping elements 19. As already described for Figure 4, these can be designed as friction dampers 16 or as viscous dampers. The two damping elements 19 of the damping device 15 are attached to the vertical tendon 13 either by means of a fastening element 20 each or by means of a common fastening element 20. Each of the damping elements 19 is attached to the inner wall 8 by means of an additional bearing piece 27 and a fastening piece 21. The fastening piece 21 and the bearing piece 27 each form a pivot bearing 26.The damping elements 19 can thus align themselves freely within the horizontal plane between the vertical tension member 13 and the inner wall 8, and can thereby dampen vibration components in the horizontal plane in various directions, i.e., both in the radial direction RR and in the tangential direction TR. The two damping elements 19 therefore have different directions of action, but both dampen vibration components in both the radial direction RR and in the tangential direction TR due to their arrangement. Preferably, the two damping elements 19 are arranged at different heights from each other so that they do not collide even when moving. The two damping elements 19 are arranged at an angle W to each other. This angle can be approximately 90°, as shown here, to cover as many directions as possible. However, other angles W, in particular angles W between 60° and 100°, are also possible.

[0072] Figure 8 shows a more detailed schematic top view of a damping device 15 with two damping elements 19. The damping elements 19 are designed as scissor dampers 17 and each have not just one, but two friction pairs 18. According to the present illustration, the damping device 19 has three scissor elements 22, between each of which a friction lining 23 is arranged. In the present top view, only one scissor arrangement is visible. However, as shown in Figure 6, it would also be possible to provide two scissor arrangements in the form of a parallelogram. In this case, the scissor damper 17 would have four friction pairs 18 according to the present embodiment. 14 BOE-11275a-24

[0073] 10.12.2025. Furthermore, the damping device 15 corresponds to that described in Figure 7, wherein, in particular, the two damping elements 19 can be movably attached to the inner wall 8 (not shown here) by means of a rotary bearing 26. The damping element 19 is attached to the rotary bearing 26 or the bearing piece 27 in the same way as the damping element 19 is attached to the vertical tension members 13. It is particularly advantageous that the damping effect of each of the damping elements 19 can be adjusted independently of the other damping element 19.

[0074] It is further evident that the friction pairs 18 are preloaded by a screw connection. According to the present illustration, a bolt 24 extends through the friction pair 18, which is preloaded and secured with a nut 25. This also makes it particularly easy to adjust the damping effect of the damping element 19 by increasing or decreasing the preload. To ensure sufficient preload and thus sufficient damping effect, a spring element 28, for example a Belleville spring, can also be provided, which applies a preload to the friction pairs 18.

[0075] The damping elements 19 are again arranged at an angle of 90° to each other. However, as already described in connection with previous figures, other angles are also possible. The direction of action of the damping elements 19 can also be adjusted, as described, by aligning the damping elements 19 with respect to the inner wall 8. As in Figure 7, these damping elements 19 are also arranged so that they can dampen vibration components in both the radial direction RR and the tangential direction TR.

[0076] As already described with reference to Figure 7, the two damping elements 19 of the damping device 15 can be attached to the vertical tension member 13 either by means of their own fastening element 20 or by means of a common fastening element 20. It is particularly advantageous if each of the two damping elements 19, designed as scissor dampers 17, is attached to the vertical tension member 13 by its own fastening element 20. In this case, the damping device 15 is formed by two individual, complete damping elements 19 in the form of two 15 BOE-11275a-24

[0077] December 10, 2025

[0078] Shear dampers 17 are formed, both of which are arranged vertically, but circumferentially and of course also vertically offset from each other on the vertical tendon 13.

[0079] In another embodiment, not shown here, which also includes two individual, complete damping elements 19 in the form of two scissor dampers 17, the two scissor dampers 17 are arranged horizontally rather than vertically on the vertical tension member 13. In this embodiment as well, each scissor damper 17 is attached to the vertical tension member 13 by its own fastening element 20. Here too, the scissor dampers 17 are arranged both circumferentially and vertically offset from one another on the vertical tension member 13. To explain the term "horizontally arranged," reference is made to Figure 10. A damping element 19 in the form of a scissor damper 17 arranged horizontally on the vertical tension member 13 is shown there for the lower damping element 19.

[0080] Figure 9 shows another embodiment of a damping device 15 with two damping elements 19. The damping elements 19 are attached to the vertical tendon 13 by means of a common fastening element 20. Depending on the design of the damping elements 19, it is not necessarily required to arrange them at different heights relative to the vertical tendon 13. The damping elements 19 can also be located at the same height, as shown in the present illustration.

[0081] Figure 10 shows another embodiment of a damping device 15 with two damping elements 19, which are again designed as scissor dampers 17. In contrast to Figure 6, one of the two damping elements 19 is arranged rotated by 90° within the damping device 15. As a result, the two damping elements 19 have different directions of action. The damping element 19 shown in the upper part of the figure is arranged such that it can dampen vibrations in the radial direction RR, i.e., it has a radial direction of action. In contrast, the damping element 19 shown in the lower part of the figure is arranged such that it can dampen vibrations in the tangential direction TR (not shown here), i.e., it has a tangential direction of action. 16 BOE-11275a-24

[0082] December 10, 2025

[0083] Additionally, the two damping elements 19 are also attached to the inner wall 8 by means of a rotary bearing 26, allowing the damping elements 19 to align freely and thus absorb vibration components from other directions. If necessary or advantageous, it would of course also be possible here to adjust the direction of action of the damping elements 19 by aligning them with respect to the inner wall 8. In this case, each of the two damping elements 19 of the damping device 15 has its own fastening element 20 for attachment to the vertical tension member 13.

[0084] Figure 11, in contrast, shows another embodiment of a damping device 15 with two damping elements 19, which are attached to the vertical tension member 13 by means of a common fastening element 20. Otherwise, the embodiment of Figure 11 corresponds to the embodiment of Figure 10.

[0085] Figure 12 further shows a schematic, abbreviated, cut-away side view of a concrete tower section 9 with a vertical tendon 13 and a damping device 15 comprising a damping element 19 and a limiting element 29. In the case of a damping element 19 designed as a scissor damper 17, as here, the damping element 19 can, in principle, move between its two end positions, here a completely flattened rhombus and a completely erect rhombus. The range of motion is ultimately limited by the contact of the opposing joints of the scissor damper 17. Similarly, in the case of a viscous damper or other damper, the range of motion can also be limited purely geometrically by the damper's design.

[0086] To protect the damping element 19, in this case the scissor damper 17, an additional limiting element 29 can be provided, which limits the tension member movement and also the movement of the damping element 19. The limiting element 29 shown here is, for example, attached to the lower joint of the scissor damper 17 and has an elongated hole 30 in which the upper joint of the scissor damper 17 can slide. The length of the elongated hole 30 limits the range of motion of the scissor damper 17. The elongated hole 30 can be as short as 17 BOE-11275a-24

[0087] It must be carried out on 10.12.2025 that only one or both end positions of the damping element 19 are not reached.

[0088] If both end positions of the damping element 19 are not reached by the elongated hole 30, three areas result:

[0089] A first area in which the damping element 19 remains fixed and thus merely holds the vertical tension member 13 in place. A second area in which the friction damper 16, here the scissor damper 17, is active, allowing movement of the vertical tension member 13 and damping it. A third area in which the movement of the friction damper 16, and thus also the movement of the vertical tension member 13, is limited by a mechanical locking mechanism, here the limits of the elongated hole 30, e.g., to securely protect installed components.

[0090] The boundary element 30 shown is merely an example. Other designs of boundary elements 30 are also conceivable.

[0091] The present invention is not limited to the embodiments shown and described. Modifications within the scope of the claims are possible, as is a combination of the features, even if these are shown and described in different embodiments.

[0092] 18 BOE-1 1275a-24

[0093] December 10, 2025

[0094] List of reference signs

[0095] 1 tower

[0096] 2 concrete tower sections

[0097] 3 steel tower section

[0098] 4 precast concrete elements

[0099] 5 steel pipe shot

[0100] 6 Foundation

[0101] 7 Outer wall

[0102] 8 Inner wall

[0103] 9 Concrete cross-section

[0104] 10 Head bearings

[0105] 11 Transition piece

[0106] 12 foot bearings

[0107] 13 Vertical tendon

[0108] 14 Interior

[0109] 15 Damping device

[0110] 16 friction dampers

[0111] 17 scissor dampers

[0112] 18 friction pairing

[0113] 19 Damping element

[0114] 20 fastening elements

[0115] 21 Fastener

[0116] 22 Scissor element

[0117] 23 Friction lining

[0118] 24 bolts

[0119] 25 mother

[0120] 26 swivel bearings

[0121] 27 stock items

[0122] 28 spring element

[0123] 29 Boundary element

[0124] 30 Slotted hole 19 BOE-1 1275a-24

[0125] December 10, 2025

[0126] H Height of the concrete tower section

[0127] W angle

[0128] RR Radial direction

[0129] TR Tangential direction

Claims

1 BOE-11275a-24 December 10, 2025 Patent claims 1. Tower (1) for a wind turbine with at least one concrete tower section (2), wherein the concrete tower section (2) has an outer wall (7), an inner wall (8) and an intermediate concrete cross-section (9), wherein the concrete tower section (2) is prestressed between a head bearing (10), in particular a transition piece (11), and a foot bearing (12), in particular a foundation (6), with at least one vertical tendon (13), wherein the vertical tendon (13) runs outside the concrete cross-section (9) of the concrete tower section (2) in an interior space (14) of the concrete tower section (2), characterized in that the vertical tendon (13) is attached to the inner wall (8) of the concrete tower section (2) by means of at least one damping device (15).

2. Tower (1) according to the preceding claim, characterized in that the damping device (15) is arranged in a central region between 30% of the height (H) and 70% of the height (H), preferably between 40% of the height (H) and 60% of the height (H), and particularly preferably between 45% of the height (H) and 55% of the height (H), in particular centrally between the head bearing (10) and the foot bearing (12), or that the damping device (15) is arranged in a lower region up to 40% of the height (H), preferably in a region between 10% of the height (H) and 30% of the height (H), and particularly preferably between 20% of the height (H) and 30% of the height (H), with respect to a height (H) of the concrete tower section (2).

3. Tower (1 ) according to one of the preceding claims, characterized in that the damping device (15) comprises at least one damping element (19) designed as a friction damper (16).

4. Tower (1 ) according to one of the preceding claims, characterized in that the at least one friction damper (16) is designed as a scissor damper (17), wherein preferably the scissor damper (17) comprises at least two friction pairs (18), more preferably at least four friction pairs (18). 2 BOE-11275a-24 December 10, 2025 5. Tower (1 ) according to one of the preceding claims, characterized in that a damping effect of the at least one damping device (15), in particular of the damping element (19), is adjustable.

6. Tower (1 ) according to one of the preceding claims, characterized in that a direction of action of the at least one damping device (15), in particular of the damping element (19), is adjustable.

7. Tower (1 ) according to one of the preceding claims, characterized in that the at least one damping device (15) includes at least one limiting element (29) which limits a movement of the at least one vertical tendon (13) in at least one direction of movement.

8. Tower (1 ) according to one of the preceding claims, characterized in that the damping device (15) comprises two damping elements (19), in particular two friction dampers (16), wherein the two damping elements (19) are arranged at an angle (W) to each other, in particular at an angle (W) between 60° and 100° and particularly preferably at right angles to each other.

9. Tower (1 ) according to one of the preceding claims, characterized in that the two damping elements (19) have different directions of action, wherein preferably one of the two damping elements (19) acts in the tangential direction (TR) and the other of the two damping elements (19) acts in the radial direction (RR).

10. Tower (1 ) according to one of the preceding claims, characterized in that the two damping elements (19) are attached to the vertical tendon (13) at different heights from each other.

11. Tower (1) according to one of the preceding claims, characterized in that the two damping elements (19) are attached to the vertical tendon (13) by means of a common fastening element (20). 3 BOE-1 1275a-24 December 10, 2025 12. Tower (1 ) according to one of the preceding claims, characterized in that the damping effect of the two damping elements (19) is independently adjustable.

13. Tower (1 ) according to one of the preceding claims, characterized in that the vertical tendon (13) is attached to the inner wall (8) of the concrete tower section (2) by means of several damping devices (15) arranged at different heights from each other, preferably at equal intervals from each other.

14. Tower (1 ) according to one of the preceding claims, characterized in that the concrete tower section (2) is prestressed with several vertical tendons (13).

15. Tower (1 ) according to one of the preceding claims, characterized in that several vertical tendons (13), in particular two vertical tendons (13), are attached to the inner wall (8) of the concrete tower section (2) by means of one or more common damping devices (15).

16. Damping device (15) for a tower (1 ) for a wind turbine, which has at least one feature mentioned in the preceding claims relating to the damping device (15), according to one or more of the preceding claims.

17. Use of a damping device (15) which has at least one feature mentioned in the preceding claims relating to the damping device (15) for a tower (1) according to one or more of claims 1-15.

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