Cable system, method for replacing cable system and use of cable system

Abstract

The invention relates to a cable system (10), a method and the use of the cable system (10) in a tensioning element (e.g. A suspension bridge) and / or a structural element (e.g. An extended roof of a building), the cable system (10) comprising a main cable (12), a sling cable (22) and a cable clip (24), wherein the main cable (12) comprises a duct (11) as a housing, one or more tensile elements (15) arranged within the duct (11) for carrying longitudinal tensile forces along the main cable (12); and a pressure-bearing element (16) arranged at least partially around the tensile element (15) for bearing radial compression and possibly longitudinal compression wherein the sling (22) is connected to the main cable (12) by means of the cable clip (24) and is configured such that sling forces are only introduced into the pressure-bearing element (16), and wherein the pressure-bearing element (16) is connected to the main cable (12) by means of the cable clip (24). And further radially transferring from the pressure-bearing element (16) to the tensile element (15).

Description

Technical Field

[0001] The present invention relates to the field of civil engineering and relates to structural elements (e.g. buildings) or tension elements (e.g. bridge cables). The invention can be applied to load-bearing structures or elements. The invention also relates to a method for installing the system on load-bearing structural elements and tension elements. Background Art

[0002] Cables used in cable-stayed bridges, pedestrian bridges, or suspension bridges safely support bridge and traffic loads. Similarly, cables are suitable for extended roofs of stadiums or arenas.

[0003] In the case of a bridge, vertical loads are transmitted via cables in tension to the towers. The towers, in turn, transmit these loads to the ground through anchors in vertical compression. The anchors must resist the inward pull of the cables and, in some cases, the vertical tension. A suspension bridge can be thought of as an inverted arch in tension, with only the towers in compression. Because the deck is suspended in mid-air, care must be taken to ensure it doesn't move excessively under load. Therefore, the deck must be heavy, rigid, or both.

[0004] The deck of a suspension bridge is supported by the main cables via intermediate connecting cables. A traditional suspension bridge consists of a tower, a deck, main cables, suspenders, and clips for attaching the suspenders to the main cables. The suspenders can be arranged vertically or at an angle (see Figure 1A and 1B ).

[0005] Each end of the main cable is usually anchored to the ground. The main cable is usually composed of a plurality of tensile elements arranged next to each other. Depending on its purpose, the average diameter of the main cable can be a few centimeters to several meters.

[0006] Because main cables play an integral role in the entire bridge system, replacing them presents numerous challenges. Often, traffic flow must be reduced or even completely halted while the cables are replaced. However, to date, most main cables are not replaceable, or when replacement is necessary or possible, it can be extremely cumbersome and costly, often resulting in large-scale disruption to traffic flow.

[0007] Furthermore, because prior art cable clamps are typically connected directly to the tension elements of the main cables, this connection can lead to rapid aging and degradation of bridge components, or what is known as fatigue corrosion fretting.

[0008] It is therefore envisaged to provide a new cable system, method and use of a cable system to overcome at least some of the above problems. Summary of the Invention

[0009] The inventors of the present invention have utilized current engineering and construction knowledge to find an effective remedy to the above-mentioned problems and have therefore proposed a new cable system and method thereof. The cable system proposed herein is more durable because the tensile elements are not directly radially compressed by friction clamps, which typically increase wear.

[0010] In a first aspect, the present invention relates to a cable system for tensioning elements (such as suspension bridges) and / or structural elements (such as extended roofs of buildings), the cable system comprising a main cable, suspenders and a cable clamp, wherein the main cable comprises a pipe as an outer shell, one or more tension elements arranged in the pipe for carrying longitudinal tension along the main cable, preferably, the tension elements are easier to replace when necessary; and a pressure element, which is arranged to at least partially surround the tension element for bearing radial compression and possible longitudinal compression, wherein the suspenders are connected to the main cable by means of a cable clamp and are configured so that the suspender force is only introduced into the pressure element and further transmitted radially from the pressure element to the tension element.

[0011] According to a second aspect of the invention, the invention relates to a method for providing a cable system for structural elements and / or tensioning elements of a cable system according to the claimed protection, the method comprising the following steps: a) arranging a tensile element within a duct of a main cable; and b) arranging a pressure element to at least partially surround the tensile element for bearing radial compression and possible longitudinal compression.

[0012] According to a third aspect of the invention, the invention relates to the use of a cable system according to the claim for housing one or more tensile elements within a main cable duct.

[0013] In a preferred embodiment, one or more cavities and / or conduits are provided to accommodate the tension elements. The conduits may be formed, for example, by cavities; these cavities may include conduits and other voids for accommodating components or elements associated with the cable system. The cavities and / or conduits are disposed within the conduit of the main cable to accommodate the tension elements and, possibly, other components and elements associated with the cable system. The cavities may also be formed by tubular elements, which may serve as internal templates within the pressure-bearing elements and / or be removed or left in place before the tension elements are introduced. Because the tension elements are not "buried" or "glued" to the main cable, they can be easily replaced when needed. The cable system proposed according to this variation facilitates replacement of the main cable (e.g., the tension elements). Thanks to the cavities and / or conduits provided within the main cable conduit, the tension elements can be positioned within their cavities or within separate conduits. This facilitates replacement of the main cable, as individual tension elements can be individually unloaded and replaced without having to replace the entire main cable at once. This reduces maintenance costs and minimizes disruption to traffic.

[0014] In this regard, it is disclosed that the pressure-bearing element is arranged to at least partially surround the tension element for bearing radial compression and possibly longitudinal compression. This means that, as an example, the pressure-bearing element is arranged around the circumference of the tension element to a certain portion (or section) of the main cable and does not necessarily extend to the entire length of the tension element (and the main cable).

[0015] In one embodiment, tubular elements are provided for forming cavities and / or ducts, or one or more tubular elements are provided inside the main cable to serve as removable formwork so as to form pressure-bearing elements between the tubular elements, thereby forming one or more cavities and / or ducts for accommodating tensile elements. In other words, such tubular elements can be used to maintain their shape for the installation of pressure-bearing elements. In addition, such tubular elements can advantageously act as compression components on the pressure-bearing elements. For example, in one variation, the tubular element remains in place and maintains its shape within the pressure-bearing element, and then serves as a cavity for introducing a duct or tensile element. In another variation, once the pressure-bearing element solidifies, the tubular element acting as a removable formwork can be withdrawn. In this case, the cavity formed in the concrete is used to introduce a duct or tensile element. In some cases, when the tubular elements are made of metal, they help to perform the additional function of the pressure-bearing element.

[0016] According to another embodiment, tubular elements are provided to form cavities and / or conduits, or one or more tubular elements are provided within the main cable to serve as a removable template to form pressure-bearing elements between the tubular elements, thereby forming one or more cavities and / or conduits for accommodating tension elements. For example, the cavity may be left open to provide an inspection port for an endoscope or other inspection equipment.

[0017] According to an embodiment, the tensile element and the pressure element are coaxially arranged in the pipe. That is, they are arranged so that the respective centers of gravity of their cross sections coincide.

[0018] In another embodiment of the present invention, a filling material is filled into the cavity, or into the space between the tensile element and the pipe, wherein the filling material is preferably a soft filling material or a liquid filling material, which makes it easier to introduce the filling material into the main cable.

[0019] In yet another embodiment, the pressure bearing element comprises a rigid filler matrix, such as mortar, concrete, polymer concrete, fly ash concrete, or wood chip concrete.

[0020] In another variant of the invention, the pressure-bearing element has a compressive strength of at least approximately 5 MPa or approximately 10 MPa to 100 MPa, preferably approximately 50 MPa.

[0021] In another embodiment of the present invention, the pressure-bearing element is provided only on the portion of the main cable corresponding to the location of the cable clamp, or only on a deviated area at the top of the tower. This advantageously reduces the weight of the main cable while maintaining its functionality. Furthermore, preferably, a plugging member and a sealing device are provided, wherein the filling material entering the conduit is confined by the plugging member with the sealing device, thereby forming a sealed joint between each conduit. In some cases, the pressure-bearing element can be provided in the area of the cable clamp and also at the top of the tower.

[0022] In a preferred embodiment, at least a portion of the remainder of the main cable is provided with a non-structural void filling material, such as a soft matrix material, a liquid material, a foam material, air, an expanded polymer or the like.

[0023] In another embodiment of the present invention, the filling material filled into the pipe and into the space between the conduits is confined by a plugging member with a sealing device, thereby forming a sealed joint between the respective conduits.

[0024] According to a variation of the present invention, a portion of the cable clamp includes a first portion that is generally annular and is adapted to wrap around or attach to a main cable, wherein the first portion has a diameter slightly larger than a conduit of the main cable; and / or the cable clamp includes a second portion that is a lug to which the sling can be attached. This type of cable clamp not only avoids permanent fixation of the sling to the clamp (which can lead to, for example, rapid aging and degradation of bridge components, or so-called fatigue corrosion fretting), but also makes cable replacement easier.

[0025] In another embodiment, the main cable is provided with a plurality of sections having grouting ports for injecting grouting material and sealed ends. This allows filling material to be introduced into the main cable.

[0026] In yet another embodiment, the tensile element is installed in the conduit before the compression element is placed on the main cable.

[0027] According to a variant of the present invention, one or more tubular elements are provided inside the main cable to serve as a removable inner template, with a cavity reserved for introducing the pressure-bearing element.

[0028] In another embodiment, one or more cavities and / or ducts are provided in the conduit for accommodating the tensile elements, preferably before the step of providing the tensile elements in the main cable conduit. In another variant, a tubular element is provided that serves as a removable template for forming the cavities and / or ducts.

[0029] In yet another embodiment, the tensile element is installed in the cavity and / or conduit before the pressure element is arranged in the conduit of the main cable.

[0030] According to one embodiment, the cable system is used to replace an existing tension element of a main cable, wherein the existing tension element is detached from its anchoring terminal end and removed from its individual cavity before being replaced by a new tension element which is subsequently anchored at its end.

[0031] "About" or "approximately" in relation to a given numerical value refers to a value that is within 10% of the specified numerical value. Unless the context clearly indicates otherwise, all numerical values given in this disclosure should be understood as supplemented by the word "about."

[0032] The indefinite article "a" or "an" does not exclude a plurality and is therefore to be understood in a broad sense.

[0033] As used herein, the term "structural element" refers to the basic components of a building structure that form the structural frame building structure (e.g., beams, columns, roof decks, slabs, posts, girders) and / or other structural members and connectors.

[0034] As used herein, the term "tension element" refers to an element that carries tension but not compression. Tension elements can be placed on structural elements to support loads. The tension elements described herein can be used, for example, in bridge cables that include tensile elements (also known as tendons).

[0035] As used herein, the term "compression element" refers to an element that is subject to axial compressive forces, the element being pushed or bearing a load. Compression forces are generated when physical forces press inward on an object, causing it to compress.

[0036] As used herein, the term "cable clip" refers to a structural item designed to direct the force F Ed Transfer from the sling to the main cable.

[0037] To this end, it is necessary to reiterate that the present invention is not necessarily limited to main cables, but can theoretically also be applied to all kinds of cables including slings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1A A schematic diagram of a suspension bridge with a vertical hanger cable arrangement is shown.

[0039] Figure 1B A schematic diagram of a suspension bridge with an inclined cable arrangement is shown.

[0040] FIG2 shows a schematic diagram of a tensile element of a main cable according to the prior art.

[0041] Figure 3 An embodiment of a main cable according to the present invention is shown.

[0042] Figure 4AA cable clamp according to an embodiment of the present invention is shown connecting a main cable and a sling in a vertical sling arrangement.

[0043] Figure 4B A force transfer mechanism according to an embodiment of the present invention is shown connecting a main cable and a sling in a vertical sling arrangement.

[0044] Figure 4C A cable clip according to an embodiment of the present invention is shown mounted on a main cable in the context of connecting the main cable and the sling in a vertical sling arrangement.

[0045] Figure 5A 、 Figure 5B and Figure 5C A cable clamp, a force transmission mechanism and a cable clamp mounted on a main cable according to embodiments of the present invention are respectively shown, for connecting the main cable and the sling in an inclined sling arrangement.

[0046] Figure 6 An example of a plug with sealing means is shown, which is installed at the end of the section of the main cable. DETAILED DESCRIPTION

[0047] The inventors have devised a cable system, method, and use that is more durable because the tension elements are not directly radially compressed by friction clamps, which typically increase wear. Furthermore, according to a preferred embodiment of the present invention, the cable's tension elements can be replaced more easily. The cable can be replaced more efficiently, thereby ensuring lower maintenance costs. Furthermore, the present method ensures minimal disruption to traffic.

[0048] Figure 1A and 1B Two different suspension bridges are shown, each having a main cable 12, a pier 21, suspenders 22, a tower 23, a bridge deck 30, and anchors 33. The main cables 12 are placed on the tower 23 and anchored at their ends with anchors 33. The weight of the bridge deck 30 and the traffic load are mainly supported by the main cables 12 through the intermediate connecting suspenders 22. These suspenders 22 can be arranged vertically (e.g., Figure 1A as shown) or tilted arrangement (as Figure 1B shown), with the former being more common than the latter.

[0049] Typically, one or more main cables 12 are provided on the left and right sides of the bridge, and the main span lengths range from a few meters to several hundred meters. However, small suspension bridges typically use a single cable as their main cable 12, either one cable on each side, or a single cable structure. The cables themselves (also known as tendons) are primarily formed of a number of tensile elements, which contain multiple steel wires or multiple strands of steel wire. These tensile elements are typically highly redundant because they are designed in such a way that the failure of a limited number of strands or wires does not reduce the overall safety of the bridge. Commonly used tensile elements can be formed of multiple steel wires or of 7-wire strands, which are standard tensile elements for cables. Due to their high strength and wide range of uses, they may be the cheapest components to carry a given tensile load.

[0050] Figure 2 shows an example of a main cable 12 from the prior art, in which individual tension elements 15 are closely arranged alongside one another, forming a main cable 12 suitable for use in a structural element or tension member. In this example, the tension elements 15 are arranged in a parallel array, covered with an outer wrapping material 31, and securely secured by steel straps 32. Suspension cables 22 are connected to the main cables 12 via cable clips 24, which transfer the load to the main cables 12. This type of main cable 12 is difficult to replace, and typically, the suspension cables 22, cable clips 24, and bridge deck 30 must be removed before replacing the main cable 12.

[0051] In order to overcome the difficulty of replacing the main cable, a new type of cable was proposed, such as Figure 3 and the subsequent figures. The main cable 12 includes a pipe 11 as an outer shell. A plurality of cavities 17 are provided in the pipe 11, which are arranged substantially parallel to the longitudinal direction of the main cable 12. The configuration generally proposed in the present invention is a channel-like structure, which is suitable for accommodating objects, such as tensile elements in the present case. In this example, a conduit 18 is provided in the pipe 11, thereby forming a separate cavity 17 before the tensile element 15 is introduced. The space between the conduit 18 and the pipe 11 can then be filled with a pressure-bearing element 16, which is mainly made of cement-containing mortar. Since each tensile element 15 is located in its own cavity 17, the tensile elements 15 can be replaced individually without compromising the main function of the main cable 12. In this regard, it is disclosed Figure 3 The individual tensile elements 15 are shown as bare steel strands (whether galvanized or not), but the invention is also applicable to polyethylene sheathed steel strands to provide an additional layer of protection against corrosion.

[0052] To this end, it is disclosed that once the various guide tubes 18 and preferably all the tension elements 15 have been installed inside the duct 11, the pressure-bearing elements 16, initially provided in the form of a grouting compound, are typically only injected into the main cable 12. Thus, before the tension elements 15 are tensioned and anchored, the pressure-bearing elements can harden according to the shape of the guide tubes 18 and the tensioned main cable 12.

[0053] Furthermore, the pressure-bearing element 16 can be filled along the entire length of the main cable 12. Since the pressure-bearing element 16 is a rigid (solid) filling material, such as mortar, this inevitably increases the weight of the main cable 12. Alternatively, in some cases, the pressure-bearing element 16 can be introduced only in certain sections of the main cable 12, such as the area where the cable clip 24 is placed to attach the sling 22 to the main cable 12, or the cable deviating area at the top of the tower 23. In this embodiment, the remaining portion of the main cable, excluding the pressure-bearing element 16, can be left empty without filling, or filled with other lightweight materials such as foam to fill the space and maintain the parallel array arrangement of the various conduits 18.

[0054] Figure 4A An example of a cable clamp 24 is shown, which may be provided to connect the main cable 12 and the sling 22 (see FIG. Figure 4B The cable clamp 24 according to the present invention is a structural member, and the cable clamp 24 is designed to Ed From the sling 22 it is transferred to the main cable 12 .

[0055] To this end, it's worth reiterating that the main cable 12 consists of two main components arranged longitudinally. The first component, a tensile element 15, is designed to carry longitudinal tensile forces. The second component, a pressure element 16, is designed to carry compressive forces. In other words, the pressure element 16 is made of a rigid material. This document discloses that the two components are not directly connected, for example, in the longitudinal direction. However, they can transmit forces in the transverse direction, such as at the location of the cable clip 24. The pressure element 16 can be a cement mortar, including standard or ultra-high performance concrete (UHPC).

[0056] Figure 4A 、 Figure 4B and Figure 4C An embodiment of the present invention is shown showing how a sling 22 is attached to the main cable 12 via a sling clip 24 in a vertical sling arrangement.

[0057] The cable clamp 24 includes a first portion 24a having a generally cylindrical shape, wherein the diameter of the first portion 24a is slightly larger than the pipe 11 of the main cable 12. The first portion 24a of the cable clamp 24 is a structural tube 24e for wrapping the pipe 11 and transferring the force F to the main cable 12 through the bearing. Ed The lateral component of ┴ is transferred to the compressive component of the main cable 12.

[0058] The cable clamp 24 further includes a second portion 24b, which may be a lug 24f to which the sling 22 may be attached. Due to the configuration of the cable clamp 24, the connection between the sling 22 and the main cable 12 is capable of transmitting both longitudinal and transverse loads.

[0059] Furthermore, a transverse plate 24c may be provided to the first portion 24a in order to reinforce the structural tube 24e and to transfer the load F through the bearing. Ed The longitudinal component of ║ is transferred to the compression component of the main cable, such as Figure 4A shown.

[0060] Alternatively, a transverse plate 24d having a plurality of holes may be provided in the cable clip 24 for passing through the guide tube 18 and maintaining the parallel array arrangement of the tension elements 15 within the main cable 12 ( Figure 4A ).

[0061] According to one embodiment, the cable clip 24 can be wrapped around the pipe 11, such as Figure 4C According to another embodiment, a cable clamp 24 having a transverse plate 24c can be used to longitudinally connect two sections of the pipe 11. In this example, according to Figure 4A The illustrated transverse plate 24 c or a transverse plate having a plurality of holes 24 d may be provided on the cable clip 24 .

[0062] Furthermore, transverse plates 24d can first be placed transversely to the main cable 12 at a specific location along the free length of the main cable 12 (i.e., between two consecutive cable clips 24 or in the portion of the main cable 12 between the clip and the offset area at the top of the tower 23). Transverse plates 24d include multiple holes to facilitate the longitudinal placement of the conduit 18 along the main cable 12. Multiple transverse plates 24d can be placed at different locations on the main cable 12 to support the placement of the conduit 18. Then, the tensile element 15 can be placed within the conduit 18, and then the pressure-bearing element 16 can be injected into the space between the conduit 18 and the pipeline 11, whereby the pressure-bearing element 16 is typically injected in the form of a grout comprising a cementitious material. Once the pressure-bearing element 16 reaches the necessary strength, the tensile element 15 can be compressed and locked at the anchor 33.

[0063] In addition, the cavity 17 may be filled with a soft filling material 19 , such as liquid such as wax or grease. Injecting liquid can improve the corrosion resistance of the tensile element 15 .

[0064] Figure 5A 、 5B 5C illustrate another embodiment of the present invention showing how a sling 22 is attached to the main cable 12 via a sling clip 24' in a tilt sling arrangement.

[0065] The cable clamp 24' according to this embodiment includes a first portion 24a' having a raindrop-shaped transverse cross section for wrapping the pipe 11. The first portion 24a' of the cable clamp 24' is a structural tube 24e' having a diameter slightly larger than that of the pipe 11.

[0066] The clamp 24' also includes a second portion 24b' having a connection member to which the sling 22 can be attached. Due to this configuration of the clamp 24', the connection between the sling 22 and the main cable 12 can transfer only transverse loads and not longitudinal loads.

[0067] Figure 6 An example of a plug with a sealing device 25 is shown, which is installed at the end of the portion of the main cable 12 injected into the pressure member 16 to fill the space between the conduits 18 (a portion of the interior of the pipe 11). Figure 6 A possible configuration of a plug with sealing means 25 is shown, which may be made of an elastomeric material so as to form a leak-tight joint with the conduit 18 and the interior of the pipe 11. Alternatively, the plug with sealing means 25 may be made of a rigid polymer material and provided with a waterproof seal on its exterior and with a separate sealing ring around each conduit 18 and tensile element 15. Alternatively, the plug with sealing means 25 may be made of a stuffing box consisting of two cylindrical layers of polymer material, such as UHMW polyethylene, polyamide, etc., provided with bolts to compress a deformable cylindrical layer of a highly deformable material, such as neoprene.

[0068] As disclosed above, in some cases, pressure-bearing elements 16 may be introduced only in certain areas of the main cable 12, such as the offset area at the top of the tower 23 and the connection area of the cable clip 24. The remaining free length of the main cable 12 can then be injected with a lightweight material or left void. In this case, the injected portion of the main cable 12 (the offset at the top of the tower 23 and the cable clip 24) can also be prefabricated, with the tubular element 20 having the desired pattern introduced before injecting the pressure-bearing element 16. It is foreseeable that the tubular element 20 may be removed to create the cavity 17 or to introduce the conduit 18. Alternatively, the tubular element 20 may remain intact to guide the conduit 17 while the injection molding of the pressure-bearing element hardens.

[0069] To this end, it is worth reiterating that, thanks to the pressure-bearing member 16 and the cable clamp 24 of the present invention, the main cable 12 has a higher durability because the tension member is not directly compressed by the cable clamp. In addition, the pressure-bearing member 16 provides a hydrophobic environment for the tension member 15, thereby reducing the corrosion rate of the tension member 15.

[0070] Reference numerals

[0071] 10 Cable System

[0072] 11 Pipeline

[0073] 12 Main Cable

[0074] 15 Tensioning element

[0075] 16 Pressure-bearing components

[0076] 17 Cavity

[0077] 18 Catheter

[0078] 19 Filling material

[0079] 20 Tubular components

[0080] 21 Bridge Pier

[0081] 22 Sling

[0082] 23 Tower

[0083] 24,24' cable clip

[0084] 24a,24a' Part 1

[0085] 24b,24b' Part 2

[0086] 24c horizontal board

[0087] 24d Transverse plate with multiple holes

[0088] 24e, 24e' structural pipe

[0089] 24f ear plate

[0090] 25. Plug with sealing device

[0091] 30 Bridge Deck

[0092] 31 External packaging materials

[0093] 32 steel strip

[0094] 33 Anchor

Claims

1. A cable system (10), characterized in that: The cable system (10) is used for tensioning elements and / or structural elements, wherein the tensioning elements include suspension bridges and the structural elements include extended roofs. The cable system (10) includes a main cable (12), a sling (22) and a cable clip (24). The main cable (12) comprises a pipe (11) as an outer shell, one or more tensile elements (15) arranged in the pipe (11) for carrying longitudinal tension along the main cable (12); and a pressure-bearing element (16) at least partially surrounding the tensile element (15) for bearing radial compression and possible longitudinal compression, wherein the pressure-bearing element comprises one or more cavities (17) or conduits (18) for accommodating the tensile elements, and The sling (22) is connected to the main cable (12) via the sling clip (24) and is configured so that the sling force is only introduced into the pressure-bearing element (16) and further radially transmitted from the pressure-bearing element (16) to the tension element (15).

2. The cable system (10) according to claim 1, characterized in that: The tensile element (15) is replaceably housed in the one or more cavities (17) or conduits (18).

3. The cable system (10) according to claim 2, characterized in that: Tubular elements (20) are provided for forming cavities (17) and / or ducts (18), or one or more tubular elements (20) are provided inside the main cable (12) and used as a detachable template to form a pressure-bearing element (16) between the tubular elements (20), thereby forming one or more cavities (17) and / or ducts (18) for accommodating the tensile element (15).

4. The cable system (10) according to any one of the preceding claims, characterized in that: The one or more cavities (17) and / or conduits (18) are arranged in the pipe (11) to facilitate inspection equipment, endoscopes, temperature, humidity, displacement or acceleration sensors.

5. Cable system (10) according to any one of the preceding claims, characterized in that: The tensile element (15) and the pressure element (16) are coaxially arranged in the pipe (11).

6. Cable system (10) according to any one of the preceding claims, characterized in that: The pressure-bearing element (16) comprises a rigid filling matrix, such as mortar, concrete, polymer concrete, fly ash concrete or wood chip concrete.

7. Cable system (10) according to any one of the preceding claims, characterized in that: The compressive strength of the pressure-bearing element (16) is at least about 5 MPa or about 10 MPa to 100 MPa, preferably about 50 MPa.

8. Cable system (10) according to any one of the preceding claims, characterized in that: The pressure-bearing element (16) is only provided on the portion of the main cable (12) corresponding to the location of the cable clamp (24), or the pressure-bearing element (16) is only provided on the deviated section at the top of the tower (23).

9. Cable system (10) according to any one of the preceding claims, characterized in that: The remainder of the main cable (12) or at least a portion of the remainder of the cavity (17) is provided with a non-structural void filling material (19), such as a soft material, a liquid material, a foam material, air, an expanded polymer, etc.

10. The cable system (10) according to claim 9, characterized in that: The non-structural void filling material (19) disposed in the space between the pipe (11) and the conduit (18) is confined by a plug with a sealing means (25) to form a sealed joint between the conduits.

11. Cable system (10) according to any one of the preceding claims, characterized in that: A portion of the cable clamp (24) includes a first portion (24a) which is generally annular and is used to wrap around or attach to the main cable (12), wherein the diameter of the first portion is slightly larger than the tube (11) of the main cable (12); and / or the cable clamp (24) includes a second portion (24b) which is an ear plate (24f) to which the sling (22) can be attached.

12. Cable system (10) according to any one of the preceding claims, characterized in that: The main cable (12) is provided with a plurality of sections, each of which has a grouting port for injecting grouting material and a sealing end.

13. A method for arranging a cable system (10) for a structural element and / or a tensioning element according to any of the preceding claims, characterized in that: The following steps are involved: The tensile element (15) is arranged in the conduit (11) of the main cable (12); and A pressure element (16) is provided to at least partially surround the tension element (15) for receiving radial compression and possibly longitudinal compression.

14. The setting method according to claim 13, characterized in that: Before step (a), the method further includes providing one or more cavities (17) and / or conduits (18) on the pipe (11) for accommodating the tensile element (15).

15. The method according to claim 13 or 14, characterized in that: Before the pressure-bearing element (16) is arranged in the duct (11) of the main cable (12), the tension element (15) is first installed in the cavity (17) and / or the conduit (18).

16. The cable system (10) according to any one of the preceding claims 1 to 12, for accommodating one or more tensile elements (15) within the duct (11) of a main cable (12).

17. Use of the cable system (10) according to claim 16 for replacing existing tension elements of the main cable (12), characterized in that: The existing tensile element is detached from its anchoring terminal end and removed from its separate cavity (17) before being replaced by a new tensile element (15), which is then anchored at its end.

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