EP3027821B1 - Corrosion-protected tension member and plastically deformable disc of corrosion protection material for such a tension member - Google Patents

Description

The invention relates to a corrosion-protected tension member, comprising a plurality of tension members and an anchor device with an anchor element, which has certain through holes for the passage of the tension elements, with the tension elements is in receiving from these tensile forces connection and trained and determined, these tensile forces indirectly or forward directly to a parent structure, at least one elastically compressible sealing disc, which is arranged on the side facing away from the free ends of the tension elements of the anchor element and for the passage of the tension elements has certain through holes, and a support means on the side facing away from the anchor element of the at least one Sealing disc is arranged and has certain through holes for the passage of the tension elements.

Such corrosion-protected tension members are used, for example, as tendons, in particular for prestressed concrete structures, for example bridges, containers or towers, or as stay cables, in particular for cable-stayed structures, in particular cable-stayed bridges, extra-stretch bridges or arch bridges.

From the EP 0 703 326 A1 a generic tension member is known, which is used as a tendon for prestressed concrete, and from the WO 03/083216 A1 is a generic tension member is known, which is used as a stay cable for a cable-stayed bridge. The DE 36 44 551 A1 discloses a corrosion-protected tension member according to the preamble of claim 1. In all these tension members, in practice, the problem of corrosion during operation, ie in the fully assembled and tensioned state, due to the ingress of dirt and moisture present in between the individual components of the tension member cavities. Critical in this regard, for example, those places where the anchor element and the tension elements, for example, using multi-part annular wedges, are in tensile force transmission connection. In order to be able to reliably ensure corrosion protection, anticorrosive material must be injected into these cavities in a laborious process, which is reflected in high assembly costs, in particular due to the working time of the assembly personnel required for this purpose.

It is therefore an object of the invention to provide a corrosion-protected tension member of the type mentioned, in which the corrosion protection can be ensured in a simple and cost-effective manner.

This object is achieved by a tension member of the type mentioned, in which in a preassembled, but not yet set under tension condition of the tension member between the anchor member and the at least one sealing disc at least one plastically deformable disc is disposed of corrosion protection material.

The invention makes use of the fact that in order to activate the sealing effect of the at least one sealing disk by means of the support means, a surface force directed essentially in the direction of elongation of the tension elements must be exerted on the at least one sealing disk. By means of this surface force, according to the invention, not only the at least one sealing washer but also the at least one plastically deformable washer made of anti-corrosion material is compressed, whereby the anti-corrosive material is automatically pressed into all the cracks and cavities of the tension member and fills them. The separate step of injecting corrosion protection material can therefore be dispensed with, which means the costs for the assembly of the invention Tension member lowers.

According to a first alternative, the aforesaid surface force can be generated independently of tensioning of the tension elements, for example by compressing the anchor element, which compresses at least one plastically deformable disc, the at least one sealing disc and the support device by means of a compression device. This compression device may comprise a plurality of threaded rods which pass through the aforementioned elements and are threadedly engaged with the free surface of the anchor member and the free surface of the support means with threaded nuts. According to a second alternative, however, it is also possible to derive the above-mentioned surface force from tensioning of the tension elements by the anchor element, the at least one plastically deformable disc and the at least one sealing disc are pulled by means of the tension elements against the support means, which supported on a fixed support abutment is.

In order to be able to ensure that even those cavities which are present at the responsible for the tensile force transmission joints of the tension elements and the anchor element, are reliably filled with corrosion protection material, it is proposed in a further development of the invention that the at least one plastically deformable disc of corrosion protection material in the preassembled, but not yet set under tension state of the tension member is applied directly to the anchor element.

A pre-filling of the gaps and cavities to be filled with anticorrosion agents can be brought about by the fact that the at least one plastically deformable disc of anticorrosion material is designed as a solid disc. Since the at least one plastically deformable disc of corrosion protection material as a solid disc has no through holes, in particular no through holes for passing the tension elements, they must be the plastically deformable disc during assembly pierced, whereby they are wetted on its outer surface with anti-corrosion material. During assembly, it is possible, for example, to proceed by initially forming the stack arrangement of support device, which forms at least one sealing disk and the at least one plastically deformable disk, and then threads the tension element through this stack arrangement.

In principle, however, it is also conceivable that the at least one plastically deformable disc of anti-corrosion material for the passage of the tension elements has certain through holes. In this case, the tension elements can be mounted first and then the support means, the at least one sealing disc and the at least one plastically deformable disc are threaded onto the tension elements.

In principle, any material having anticorrosive properties can be used as a corrosion protection material. With regard to the handling of the at least one plastically deformable disk, however, it is advantageous if the cone penetration of the anticorrosive material at a temperature of 25 ° C is between about 60 • 0.1 mm and about 100 • 0.1 mm. Corrosion protection material with a cone penetration above this range of values makes it difficult to produce a plastically deformable disk which can be handled easily on the construction site, while full penetration of the cracks and cavities with corrosion protection material is more difficult for a cone penetration below this value range.

In particular, it can be provided that the corrosion protection material is microcrystalline wax. A suitable microcrystalline wax can be obtained, for example, under the trade name NONTRIBOS® VZ-inject from the company August Gähringer Carl Gähringer eK Factory of Technical Oils & Fats. Alternatively, petroleum jelly and other petrolatum-based, permanently plastic anticorrosive materials may also be used.

In order to be able to ensure that in the pre-assembly for filling all the cracks and cavities sufficient amount of corrosion protection material is introduced into the anchor device is proposed in a further development of the invention that the volume of corrosion protection material per tension element at least equal to the product of the length of the anchor element in the longitudinal direction of extension of the tension elements and the annular surface between the tension element and the through hole in the anchor element, through which the tension element is passed. In this case, the value of the annular surface between about 30 mm ² and 180 mm ² amount.

In order to be able to prevent an excessive loss of corrosion protection material through the through holes of the at least one sealing disk intended for the passage of the tension elements when the disk arrangement formed from the at least one sealing disk and the at least one plastically deformable disk is proposed, it is proposed that the modulus of elasticity of the at least one sealing disk and the resistance of the at least one plastically deformable disc to plastic deformation in each case in relation to a compressive force acting in the longitudinal direction of the tension elements are matched to one another such that the boundary surfaces of the through holes of the at least one sealing disk bear sealingly against the tension elements before the at least one plastically deformable disk increases more has been deformed as 5% of their measured in the longitudinal direction of the tension members thickness.

In the event that the value of the cone penetration of the anticorrosive material should be too high for this purpose, it may further be provided that the at least one plastically deformable disc is assigned at least one resistance element that increases its resistance to plastic deformation. The at least one resistance element can be formed, for example, by an elastically and / or plastically deformable element. Furthermore, the at least one resistance element be embedded in the corrosion protection material or the at least one plastically deformable disc, for example in the form of a ring, surrounded. Regardless of the exact design and arrangement of the at least one resistance element, it is considered in the context of the present invention as belonging to the at least one plastically deformable disc of corrosion protection material.

The problem of the undesired escape of corrosion protection material as a result of the plastic deformation of the at least one plastically deformable disk can also occur on the side of the at least one plastically deformable disk facing away from the at least one sealing disk. In a further development of the invention is therefore proposed according to a first embodiment, that the anchor member has a stamp portion which engages in the preassembled, but not yet under tension condition of the tension member in a sleeve in which the at least one plastically deformable disc, the at least one sealing washer and the support means are received. According to this first embodiment variant, the engagement of the stamp portion of the anchor element in the sleeve forms a seal which at least complicates, if not completely prevents, the undesired leakage of corrosion protection material. Furthermore, the sleeve can be in power transmission with the parent structure, for example, be embedded in the parent structure, and at its end facing the anchor element having a contact flange on which the armature element in the fully assembled and tensioned state of the tension member rests force-transmitting. Also, the above-mentioned building fixed bearing shoulder can be formed on this sleeve.

According to a second embodiment, however, it is also conceivable that the anchor element is operatively connected to a sleeve in which the at least one plastically deformable disc, the at least one sealing washer and the support means are accommodated. In this second embodiment can advantageously also a contact element be provided, which is in power transmission with the parent structure and at which in the fully assembled and tensioned state of the tension member, the armature element or a force-transmitting element operatively connected to this force-transmitting element is present. Both firm connections of this embodiment can be realized by integral training, screwing, welding or other suitable manner.

In both embodiments, it may also be advantageous if the at least one plastically deformable disc, the at least one sealing disc and the support means are guided with their outer peripheral surfaces on an inner surface of the sleeve. Furthermore, in both embodiments, the sleeve can be made of metal, preferably steel, for example as a cast part.

It should also be added that the first embodiment variant is suitable, for example, for producing surface power according to the above-explained second alternative, while the second embodiment variant is suitable, for example, for producing surface power according to the first alternative explained above.

As known from the prior art, the support means in the vorlliegenden invention may be formed only by a spacer disc, which may be made of plastic, in particular polyethylene, for example. In order to ensure sufficient stability of the support device even with tension members with larger diameters, the spacer disc can be made of metal, for example steel. Alternatively, however, it is also conceivable that the support means in addition to the spacer disc also includes a pressure plate, which is made of metal, for example steel, for example.

Furthermore, the tension elements of the tension member according to the invention may be known per se tension elements. For example, so-called monolayers be used as tension elements. Under a monolayer is understood to be a single strand formed from seven wires, which is surrounded by a sheath made of plastic, preferably polyethylene, wherein the space between the wires and the sheath with corrosion protection material, such as corrosion protection grease is filled. Alternatively, however, it is also possible to use strands which are coated with synthetic resin, for example epoxy resin (so-called epoxy strands). In practical application, these two types of tension members differ mainly in that, where the monostrands where the tensile forces between the tension elements and the anchor element transmitting ring wedges are arranged, the plastic jacket must be removed while leaving the resin coating in the epoxy strands can be.

In order to be able to prevent the plastic casing from impairing the force transmission connection between the anchor element and the tension elements, for example by means of ring wedges, a sleeve-shaped retaining element can be arranged between the end of the plastic casing and the force transmission point of each tension element. Alternatively, however, it is also conceivable to design the passage holes formed in the anchor element in a stepped manner for the tension elements, the step forming a retaining surface for the plastic casing. The former case has the advantage that the replacement of individual tension elements is readily possible.

It should also be added that the at least one sealing disc can be made of a soft rubber, for example nitrile butadiene rubber (NBR rubber, for example known under the trade name Perbunan®) or chloroprene rubber (CR rubber).

Figur 1

einen Längsschnitt durch ein erfindungsgemäßes Zugglied, das als Spannglied, insbesondere für Spannbetonbauwerke, eingesetzt werden kann, in seinem fertig montierten und gespannten Zustand;

Figur 2

einen Längsschnitt des Zugglieds gemäß Figur 1 in seinem vormontierten, aber noch nicht gespannten Zustand;

Figuren 3 und 4

Längsschnitte analog Figuren 1 und 2 eines anderen erfindungsgemäßen Zugglieds, das als Schrägseil insbesondere für Schrägseilbauwerke, eingesetzt werden kann.

The invention further relates to the use of a plastically deformable disc of corrosion protection material in a corrosion-protected tension member according to the invention. The invention will be explained in more detail below with reference to the accompanying drawings of two embodiments. It shows:

FIG. 1

a longitudinal section through an inventive tension member which can be used as a tendon, in particular for prestressed concrete structures, in its fully assembled and tensioned state;

FIG. 2

a longitudinal section of the tension member according to FIG. 1 in its preassembled, but not yet tense state;

FIGS. 3 and 4

Longitudinal sections analog FIGS. 1 and 2 another tension member according to the invention, which can be used as a stay cable especially for cable-stayed structures.

In FIG. 1 is a tendon 10, as it can be used in particular for prestressed concrete structures, such as bridges, tanks or towers, as a first embodiment of a corrosion-protected tension member according to the invention in his in the concrete of prestressed concrete structure 12 fully assembled and tensioned state shown.

The tendon 10 includes a plurality of tension members 14, each of which may be formed by a resin coated steel wire strand. For example, epoxy resin can be used as the synthetic resin, with the tension elements 14 in this case being referred to briefly in the jargon as "epoxy strands".

The tension elements 14 are connected to an anchor plate 16, for example, made of steel in tensile force transmitting connection. For this purpose, the armature disc 16 is provided with a plurality of through holes 18, each having an inner cylindrical portion 18 a, which the side facing away from the prestressed concrete structure 12 side merges into a conical section 18b. Each of the conical sections 18b serves to receive a multipart ring wedge 20, which surrounds the associated tension element 14 positively and non-positively and has the task of transmitting the tensile forces from the tension element 14 to the armature disk 16.

The armature disk 16 is supported on the outer surface 12a of the structure 12 via an abutment flange 22a of an essentially tubular anchor body 22, which is concreted into the structure 12 and can be manufactured, for example, as a cast part, in particular of cast iron. The anchor body 22 forms from the surface 12a of the structure 12, starting in the direction of the structure 12 into a tubular shell for the tension elements 14, which can be extended if desired in the direction of the structure 12 by means of another tube 24. As the further tube 24, for example, a smooth or a profiled plastic pipe, in particular polyethylene pipe, a metal pipe or the like may be used.

The traction elements 14, which run slightly obliquely in the interior of the structure 12 relative to the traction axis A of the tension member 10, are deflected by means of a spacer disc 26 arranged within the anchor body 22 in such a way that they pass through the armature disc 16 substantially parallel to the traction axis A. For this purpose, the spacer disc 26 is provided with a plurality of correspondingly formed through-holes 26a. The spacer disk 26 can be made, for example, of plastic, in particular polyethylene.

On the armature disk 16 facing side of the spacer disk 26 is further arranged a sealing washer 28, which in turn has a plurality of through holes 28 a for the passage of the tension elements 14. The gasket 28 may be made of, for example, a soft rubber, for example, nitrile butadiene or chloroprene rubber.

In the assembled and tensioned state of the tension member 10 according to the invention, the sealing disc 28 is supported on the spacer disc 26. In order to be able to provide the support for the sealing disk 28, the spacer disk 26 can in turn be supported indirectly or directly on the anchor body 22. In the illustrated embodiment, for example, it is supported on an inner annular shoulder 22b of the anchor body 22. If the internal stability of the spacer disc 26, for example, due to a too large diameter, this insufficient, so could between the spacer disc 26 and the annular shoulder 22 b additionally one, preferably made of metal, support disk are provided.

As in particular from FIG. 2 can be seen, in the assembly of the tension member 10 between the sealing washer 28 and the armature disc 16 according to the invention further comprises a plastically deformable disc 30 is disposed of corrosion protection material. Also, this plastically deformable disc 30 of corrosion protection material may have a plurality of through holes for the tension elements 14. However, this is not necessarily required. Rather, the plastically deformable disc 30 may be formed as a solid disc, so that the tension members 14 must be inserted through the plastically deformable material of the disc 30 during assembly, whereby they are already wetted at this time on its surface with corrosion protection material.

When tensioning the tension member 10 engages a punch portion 16a of the armature disc in the anchor body 22 and presses against the plastically deformable disc 30 at. Since it is clamped between the armature disk 16 and the sealing disk 28, it deforms plastically, so that the corrosion protection material is automatically, ie accompanied by the clamping process, pressed into all remaining in the tension member 10 in its untensioned state cavities, especially in between the Tension elements 14 and the inner walls of the through holes 18 and in the Ring wedges 20 existing cavities. Since these cavities are thus substantially completely filled with corrosion protection material, penetration of moisture and dirt can be reliably prevented. In order to achieve the same goal, the corrosion protection material had to be injected in the prior art subsequently after tensioning the tension member. The latter was particularly cumbersome due to the fact that the anticorrosion material had to be injected one at a time into each of the annular wedges, and involved high assembly costs because of the associated labor costs.

In order to prevent the anticorrosive material from being pressed not only into the above-described cavities but also from escaping between the traction elements 14 and the inner walls of the through-holes 28a of the sealing disc 28 and 26a of the spacer disc 26, care must be taken that First, the material of the sealing washer 28 seals around the tension members 14 before the disc 30 is corrosion-plastically deformed to a significant extent. This can be achieved, for example, by matching the modulus of elasticity of the sealing disk 28 and the resistance of the plastically deformable disk 30 to each other with respect to plastic deformation with respect to a compression force acting in the longitudinal direction of the tension elements 14 in order to achieve this goal.

In the Figures 3 and 4 a second embodiment of a tension member according to the invention is shown. The embodiment according to Figures 3 and 4 differs from the embodiment according to FIGS. 1 and 2 mainly by the fact that it is not a tendon 10, as it is used in particular for prestressed concrete structures, but a stay cable, as used in particular in cable-stayed structures, such as cable-stayed bridges, extra-stretch bridges or arch bridges. Therefore, in the Figures 3 and 4 analog parts provided with the same reference numerals as in the FIGS. 1 and 2 , but increasingly around the number 100. In addition, the tension member or the cable 120 will be described below only insofar as it is of the tendon 10 of FIGS. 1 and 2 which is expressly referred to herewith.

The tension member or cable 120 comprises a plurality of individual tension members 114, each of which may be formed, for example, as so-called monoliths. Under a monolayer is understood to be a single strand formed from seven wires, which is surrounded by a sheath made of plastic, preferably polyethylene, wherein the space between the wires and the sheath with corrosion protection material, such as corrosion protection grease is filled.

The tension members 114 are connected to an armature plate 116 made of steel, for example, in traction-transmitting connection. For this purpose, the armature disk 116 is like the armature disk 16 of the embodiment according to FIGS. 1 and 2 provided with a plurality of through holes 118. Tapered portions 118b of the through-holes 118, which adjoin cylindrical portions 118a, serve to receive annular wedges 120 which engage around the tension members 114 in a positive and non-positive manner. In order to prevent interference of the engagement of the ring wedges 120 with the tension members 114 by the sheathing, in practice, where the ring wedges 120 are arranged, the sheath of the tension members 114 is removed. One recognizes this in the Figures 3 and 4 in that in those sections of the tension elements 114 (in the Figures 3 and 4 left), in which the sheath has been removed, the twist of the wires of the strand is indicated by oblique lines, while the tension elements 114 in the sheathed sections (in the Figures 3 and 4 right) are shown smooth-walled. In addition, it has proven to be advantageous to arrange 120 spacer sleeves 140 on the strands between the end of the shell and the ring wedges.

The outer peripheral surface of the armature disc 116 is provided with a thread 116b, onto which a ring nut 142 is screwed. The armature disk 116 and the ring nut 142 together form an anchor device 144, which is supported on the outer surface 112a of the structure 112 via a bearing plate 122. More specifically, the anchor device 144 is supported on the bearing plate 122 via the ring nut 142. The bearing plate 122 may be made of steel, for example. Furthermore, it can be inserted into a recess provided for the structure 112 or be embedded in the structure 112. In principle, however, the anchoring device 144 can also be supported directly on the building 112.

For the embodiment of FIGS. 1 and 2 is still nachzutragen that the anchor device 44 consists solely of the anchor plate 16 there.

To the bearing plate 122 may be in the building 112 into a pipe 124 connect, which protects the tension elements 114 from the concrete of the building 112. The tube 124 may be, for example, a smooth or a profiled plastic tube, in particular polyethylene tube, a smooth or a profiled metal tube, in particular steel tube, or the like.

It should also be noted that the anchor plate 116 is connected within the concrete of the structure 112 with another tube 146. The further tube 146 may for example be screwed onto the armature disk 116 or welded thereto. In this further tube, a spacer disc 126 is accommodated, which deflects the slightly inclined in the interior of the concrete of the structure 112 relative to the traction axis A of the tension member 110 tension members 114 such that they pass through the armature disc 116 to the traction axis A substantially parallel. For this purpose, the spacer disc 126 is provided with a plurality of correspondingly formed through holes 126a. The spacer disc 126 can be made of plastic, in particular polyethylene, for example.

On the armature disk 116 facing side of the spacer disk 126 three gaskets 128 are arranged in the illustrated embodiment, which also have a plurality of through holes 128 a for the passage of the tension elements 114. The gaskets 128 may be made of, for example, a soft rubber, such as nitrile butadiene or chloroprene rubber. In principle, however, it is also conceivable to use fewer or more than three sealing washers.

In the fully assembled and tensioned state of the tension member 110 according to the invention, the sealing disk 128 furthest from the armature disk 116 is supported on the spacer disk 126. In order to be able to act as an abutment for the three sealing disks 128, the spacer disk 126 is in turn supported on a, preferably made of metal, support disk 148. The support disk 148 is in turn held on the armature disk 116 via a plurality of threaded rods 152 equipped with threaded nuts 150, 151.

As in particular from FIG. 4 can be seen, when mounting the tension member 110 according to the invention between the armature disk 116 nearest sealing washer 128 and the armature disk 116 is further arranged a plastically deformable disc 130 of corrosion protection material. Also, this plastically deformable disc 130 of corrosion protection material may have a plurality of through holes for the tension elements 114. As in the embodiment of the FIGS. 1 and 2 however, this is not necessarily required. Rather, the plastically deformable disc 130 may also be formed as a solid disc, so that the tension members 114 must be inserted through the plastically deformable material of the disc 130 during assembly, whereby they are wetted on their surface with corrosion protection material.

Another difference between the embodiments of the FIGS. 1 and 2 on the one hand and the Figures 3 and 4 On the other hand, it is that the tension member or cable 120, the process of tensioning the tension elements 114 is separated from the operation of activating the sealing washers 128 and the plastic deformation of the disc 130 of anti-corrosion material, while both operations in accordance with the above description of the tension member 10 of FIGS. 1 and 2 to run there simultaneously.

After tensioning the tension member 110, the sealing washers 128 can be activated and the anti-corrosion material disc 130 can be plastically deformed by tightening the threaded nuts 151 of the threaded rods 152. Since the disk 130 is clamped between the armature disk 116 and the sealing disks 128, it plastically deforms, so that the corrosion protection material is automatically, i. accompanied by this second clamping operation, is pressed into the tension member 110 in its untensioned state remaining cavities, in particular in the existing between the tension members 114 and the inner walls of the through holes 118 and in the annular keys 120 cavities. Again, one can thus spare the previously required in the prior art subsequent injection of anti-corrosion material after tensioning the tension member.

Next, it also consists in the embodiment of Figures 3 and 4 the risk that the corrosion protection material is not only pressed into the above-mentioned cavities, but can escape through the between the tension members 114 and the inner walls of the through holes 128 a of the sealing discs 128 and 126 a of the spacer disc 126. Again, this can be prevented by making sure that first the material of the sealing washers 128 seals around the tension members 114 before the sheet 130 of corrosion protection material is significantly plastically deformed. Once again, this can be achieved, for example, by matching the modulus of elasticity of the sealing disks 128 and the resistance of the plastically deformable disk 130 to plastic deformation relative to a compressive force acting in the longitudinal direction of the tension elements 114 in order to achieve this objective. However, it is It is also possible to embed in the plastically deformable disc 130 at least one resistance element 154 which increases its resistance to plastic deformation in a manner adapted to the elastic modulus of the sealing discs 128.

Of course, also in the embodiment according to FIGS. 1 and 2 at least one such resistance element is used.

It should also be added to both embodiments that the free ends 14a and 114a of the tension elements 14 and 114 projecting from the armature disk 16 or 116 are protected against external influences, in particular by means of a cap (not shown) which can preferably be filled with corrosion protection material Weather conditions, can be protected. The attachment points for this cap are in the embodiment of FIGS. 1 and 2 provided on the abutment flange 22 a and designated there by 56, while in the embodiment of the Figures 3 and 4 provided on the ring nut 142 and designated there by 156.

Claims (11)

1. Corrosion-protected tension member (10; 110) comprising

   - a plurality of tension elements (14; 114) and

   - an anchor apparatus (44; 144) having

   - an anchor element (16; 116) which comprises through-holes (18; 118) intended for the tension elements (14; 114) to pass through, is in contact with the tension elements (14; 114) so as to absorb tensile forces therefrom, and is designed and intended to indirectly or directly transmit said tensile forces to a higher-level structure (12; 112),

   - at least one resiliently compressible sealing disc (28; 128) which is arranged on the side of the anchor element (16; 116) facing away from the free ends of the tension elements (14; 114) and which comprises through-holes (28a; 128a) intended for the tension elements (14; 114) to pass through, and

   - a support device (26; 126) which is arranged on the side of the at least one sealing disc (28; 128) facing away from the anchor element (16; 116) and comprises through-holes (28a; 128a) intended for the tension elements (14; 114) to pass through,

   characterised in that at least one plastically deformable disc (30; 130) made of an anti-corrosion material is arranged between the anchor element (16; 116) and the at least one sealing disc (28; 128) when the tension member (10; 110) is in a state in which it is pre-assembled but not yet under tensile stress.
2. Tension member according to claim 1, characterised in that the at least one plastically deformable disc (30; 130) made of anti-corrosion material rests directly on the anchor element (16; 116) when the tension member (10; 110) is in the state in which it is pre-assembled but not yet under tensile stress.
3. Tension member according to either claim 1 or claim 2, characterised in that the at least one plastically deformable disc (30; 130) made of anti-corrosion material is formed as a solid disc.
4. Tension member according to any of claims 1 to 3, characterised in that the cone penetration of the anti-corrosion material is of between approximately 60·0.1 mm and approximately 100·0.1 mm at a temperature of 25 °C.
5. Tension member according to any of claims 1 to 4, characterised in that the anti-corrosion material is microcrystalline wax.
6. Tension member according to any of claims 1 to 5, characterised in that the volume of the anti-corrosion material per tension element (14; 114) is at least equal to the product of the length of the anchor element (16; 116) in the longitudinal extension direction (A) of the tension elements (14; 114) and the surface area of the annulus between the tension element (14; 114) and the through-hole (18; 118) in the anchor element (16; 116) through which the tension element (14; 114) is guided.
7. Tension member according to any of claims 1 to 6, characterised in that the modulus of elasticity of the at least one sealing disc (28; 128) and the resistance of the at least one plastically deformable disc (30; 130) to plastic deformation, in each case based on a compression force acting in the longitudinal direction (A) of the tension elements (14; 114), are matched to each other such that the boundary surfaces of the through-holes (28a; 128a) in the at least one sealing disc (28; 128) are in sealing contact on the tension elements (14; 114) before the at least one plastically deformable disc (30; 130) has been deformed by more than 5 % of the thickness thereof measured in the longitudinal direction (A) of the tension elements (14; 114).
8. Tension member according to claim 7, characterised in that the at least one plastically deformable disc (130) is associated with at least one resistance element (154) which increases the resistance of said disc to plastic deformation.
9. Tension member according to any of claims 1 to 8, characterised in that the anchor element (16) has a stamp portion (16a) which, when the tension member (10) is in the state in which it is pre-assembled but not yet under tensile stress, engages in a sleeve (22) in which the at least one plastically deformable disc (30), the at least one sealing disc (28) and the support device (26) are received.
10. Tension member according to any of claims 1 to 8, characterised in that the anchor element (130) is connected in a structurally durable manner to a sleeve (146) in which the at least one plastically deformable disc (130), the at least one sealing disc (128) and the support device (126) are received.
11. Use of a plastically deformable disc (30; 130) made of anti-corrosion material in a corrosion-protected tension member according to any of the preceding claims.

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