EP3225744A1 - Device for moving at least one flexible strand element, foundation structure with such a device, and method for moving at least one flexible strand element - Google Patents

Abstract

The invention relates to a device (11), in particular an assembly aid, for laying at least one flexible strand element, with a connecting element (13) for arranging within a foundation structure (10) and with a holding device (14) for holding the connecting element (13) on the Foundation structure (10). In order to avoid attachments on an outer side of the foundation structure and / or on the outside of the foundation structure protruding parts, the device (11) is characterized in that the holding device (14) for releasably holding the connecting element (13) in the region of an opening (15) the foundation structure (10) is formed exclusively within the foundation structure (10).

Description

The invention relates to a device, in particular an assembly aid, for laying at least one flexible strand element, with a connecting element for arranging within a foundation structure and with a holding device for holding the connecting element to the foundation structure. Furthermore, the invention relates to a foundation structure with such a device and a method for laying at least one flexible strand element by means of such a device through an opening of a foundation structure.

Such a device and foundation structure is from the EP 2 704 276 A1 known. Here, the foundation structure is designed as a flat foundation, which is placed on a seabed. Furthermore, the device for laying a flexible strand element has a cable roller arranged outside the foundation structure.

Furthermore, post-like and / or tubular foundation structures are known. In particular, so-called monopile foundation structures are used in the offshore sector. Such foundation structures can at least partially into one Underground, especially a seabed, be driven and / or rammed. Here, the foundation structure can be driven into the ground to a depth of 30 meters, 40 meters or more. The ramming energy required for this purpose generates far-reaching shocks and noise effects that pollute the marine world and in particular marine life. For some marine life, the effects of ramming can be life-threatening, as the animals may lose their sense of direction, for example.

It is therefore known to use noise reduction systems during ramming of a foundation structure. In particular, such a system, a so-called mitigation system, has a tubular guiding structure. A corresponding guide tube is placed on the ground to introduce the foundation structure within the guide tube and burrow into the ground. In this case, the foundation structure can be guided and / or aligned by means of suitable guide elements within the guide structure. Due to a suitable design of the guide structure, the noise load during ramming can be significantly reduced.

The disadvantage here, however, that due to the limited space within the guide structure attachments can be damaged on an outer side of the foundation structure during insertion into the guide structure and / or during ramming.

It is therefore the object underlying the invention to further develop a device of the type mentioned at the outset such that attachments on an outer side of the foundation structure and / or parts projecting beyond the outer side of the foundation structure can be avoided. In particular, it is an object of the invention to improve the laying of at least one flexible strand element in the offshore region below a waterline or water surface. Preferably, an alternative solution for laying at least one flexible strand element in the offshore area should be provided.

The object underlying the invention is achieved by means of a device of the aforementioned type, wherein the holding device is designed for releasably holding the connecting element in the region of an opening of the foundation structure exclusively within the foundation structure. Furthermore, the object underlying the invention is achieved by means of a foundation structure and a method of the type mentioned with such a device.

It is advantageous that attachments on the outside of the foundation structure and / or on the outside protruding parts are avoidable. In particular, the entire holding device and / or the entire connecting element of Device can be arranged only within the foundation structure. Preferably, therefore, the connecting element is held releasably by means of the holding device at least in the region of the opening exclusively within the foundation structure. Here, the connecting element may be formed as a rope and / or a chain.

In particular, in the context of the present application, a rope is to be understood as meaning a rope made of natural fibers, synthetic fibers and / or wires. The rope may be formed as a leash or a rope. Preferably, a flexible strand element is formed as a cable, a pipe, a pipe, a wire or a rope.

The foundation structure may be part of an offshore installation and / or a wind turbine offshore. Preferably, the device and / or the connecting element for laying the flexible strand element in the offshore region below a waterline and / or water surface is formed.

According to a further embodiment, the holding device has a predetermined breaking device with a predetermined breaking point. By means of the predetermined breaking device, the connecting element or rope can be at least partially released from the holding device. In particular, this makes it possible to release the connecting element with a sufficient tensile force from the holding device and to pull it out of the interior of the foundation structure through the opening to the outside. Preferably, the connecting element or the rope is connected to the predetermined breaking device. In particular, the predetermined breaking device, preferably at least one part of the predetermined breaking device, is designed for connecting and / or welding to an inner side of the foundation structure.

The predetermined breaking device may have a connecting section for connecting to the connecting element and / or a fastening section for fastening the predetermined breaking device to the inner side of the foundation structure. In particular, the connecting portion with the attachment portion by means of the predetermined breaking point is releasably connected to each other. Thus, the attachment portion may be formed as the part of the predetermined breaking device, which is provided for connecting and / or welding to the inside of the foundation structure. In particular, the attachment portion is formed at least in two parts. A first part of the attachment portion can be connectable, in particular screwed, to a further part of the attachment portion. Preferably, the first part of the attachment portion of the predetermined breaking point is assigned and / or has the predetermined breaking point. The further part of the attachment portion may be associated with the inside of the foundation structure. In particular, only the further part of the fastening section is designed for connecting and / or welding to the inside of the foundation structure. Thus, the further part of the Attachment section may be used several times. In particular, the predetermined breaking point and / or the first part of the fastening section can be installed and / or exchanged in a simple manner even if the further part of the fastening section is already firmly and / or permanently connected to the foundation structure. Preferably, the predetermined breaking point for receiving a tensile load of up to 2,000 kilograms is formed. Depending on requirements, the predetermined breaking point can be designed according to a desired load capacity.

According to a development, the holding device for preventing undesired and / or premature release of the connecting element from the holding device and / or from a predetermined breaking device has a securing device. In particular, in an undesirable and / or premature breakage of the predetermined breaking point, a release of the connecting element or the rope is prevented by the holding device by means of the securing device. The securing device can bridge the predetermined breaking point of the predetermined breaking device. Preferably, the securing device is connected on the one hand to a connecting portion of the predetermined breaking device and / or the connecting element and on the other hand to a fixing portion of the predetermined breaking device or an inner side of the foundation structure. Here, the securing device can also be designed as a rope, in particular as a wire rope. The securing device may be designed as required for receiving a tensile load, which may be larger, smaller or equal to the absorbable tensile load of the predetermined breaking point. Preferably, the securing device breaks at a tensile load which is smaller than the maximum absorbable tensile load of the predetermined breaking point. Preferably, the securing device is designed to absorb a tensile load of up to 1,200 kilograms or up to 1,500 kilograms.

According to a further embodiment, the holding device has a holding frame for arranging in the region of the opening of the foundation structure. In particular, the connecting element is at least partially connected to the holding frame. The support frame may be polygonal, square, square, oval, circular or annular and / or have transverse elements. In particular, at least a part of the connecting element is guided transversely over the holding frame. Thus, a part of the connecting element or the rope can be guided and / or tensioned from a first side of the holding frame to a second side of the holding frame. Preferably, at least a part of the connecting element, starting from a first location of the holding frame, is guided and / or tensioned transversely over a frame opening formed by means of the holding frame to an opposite second location of the holding frame. The connecting element may be attached to the first frame and / or the second location on the support frame.

Preferably, the connecting element formed as a rope is formed from a plurality of cable strands. At least one first strand of rope may be routed and / or tensioned from the first location of the support frame across the frame opening to the second location of the support frame. At least one second strand of cable can be guided and / or held from the first location of the holding frame along the holding frame to the second location of the holding frame. In particular, the at least second cable strand is guided and / or held from the first location of the holding frame along a first subsection of the holding frame to the second location of the holding frame. Preferably, at least one third cable strand is guided and / or held from the first position of the holding frame along a second subsection of the holding frame, which is different from the first subsection, to the second location of the holding frame. Thus, the holding frame can be composed of at least a first section and a second section. For example, the sections may be formed annular section. The holding frame can be formed overall annular. In particular, the shape of the holding frame can be adapted to the shape of the opening of the foundation structure.

According to a development, the holding frame is deformable, elastic, annular and / or formed from a plastic. In particular, in the case of a deformable and / or elastic formation made of a plastic, the holding frame can be deformed with a sufficient force and / or tensile load such that the holding frame can be pulled outward through the opening from the interior of the foundation structure. Preferably, the holding frame has at least one predetermined breaking point. Thus, the holding frame can break at a sufficient tensile load and be performed through the opening of the foundation structure. In particular, the holding frame for receiving a tensile load is formed, which is less than the maximum absorbable tensile load of the predetermined breaking device. Preferably, the support frame has a diameter or an outer width which is greater than an inner diameter or an inner width of the opening of the foundation structure. This makes it possible to ensure that the holding frame can be arranged within the foundation structure in the region of the opening of the foundation structure.

According to a further embodiment, the foundation structure according to the invention with an apparatus according to the invention has an opening in a side wall. In particular, the opening for placing in an area below a waterline is arranged on the foundation structure. Preferably, the opening is provided for performing at least one flexible strand element. In particular, the connecting element or cable arranged within the foundation structure by means of the holding device serves to provide a care-line function. Thus, the connecting element may be formed as a Sorgleine. Furthermore, the connecting element can be connected to a further care line or directly to at least one flexible strand element. In particular, the Connection with the connecting element through the opening of the foundation structure. In this case, the preparation of the compound from outside the foundation structure can take place. Subsequently, the connecting element can be pulled at least partially or completely outwards through the opening.

In particular, the connecting element is arranged in the region of the opening by means of the holding device exclusively within the foundation structure. Preferably, the entire connecting element or rope is held within the foundation structure. In particular, the connecting element or rope is at least partially guided across the opening and / or tensioned. Thus, a portion of the connecting element from the outside and through the opening of the foundation structure is accessible. In particular, a section of the connecting element that is guided across the opening provides an externally accessible connecting cable section and / or gripping section. In this case, the connecting cable section and / or the gripping section can be connected to an underwater vehicle and / or a connecting cable supplied from the outside, in particular a further care line. The underwater vehicle may be a remotely controlled vehicle, in particular a so-called Remotely Operated Vehicle (ROV). Such an underwater vehicle can be remotely controlled by a boat and / or ship. Optionally, the underwater vehicle can seize the portion of the connecting element in the region of the opening of the foundation structure with a suitable gripping means and / or the underwater vehicle can connect a connecting cable arranged substantially outside the foundation structure to the connecting portion of the connecting element.

According to a further embodiment of the foundation structure, a holding frame of the holding device is arranged within the foundation structure in the region of the opening. By means of the holding frame, a portion of the connecting element can be guided and / or stretched across the opening of the foundation structure. In particular, the holding frame at least partially surrounds an inside edge of the opening. The holding frame may rest at least partially or completely on the inside edge of the opening. For additional stabilization of the holding frame in the region of the opening, the holding frame may be releasably secured to the inside edge of the opening. Here, attachment points of the holding frame may be formed on the inside edge as predetermined breaking points of a predetermined breaking device. Additionally or alternatively, the connecting element, in particular above the opening, be held by means of a fastening device on the inside of the foundation structure. Preferably, the fastening device has a predetermined breaking point. The fastening device and a predetermined breaking device can be arranged in two regions of the opening facing away from one another. In particular, the predetermined breaking device can be below the opening and / or the fastening device above the opening.

According to a development, the connecting element is prestressed within the foundation structure. In this way, in particular during the ramming of the foundation structure into the ground, an undesirable vibration, vibration or slag of the connecting element or of the rope can be avoided or at least reduced. In particular, the connecting element with a tensile load of up to 200 kg is kept biased within the foundation structure. Preferably, the holding device has a holding element fastened to the foundation structure. In particular, the holding element serves to tension the connecting element or the rope within the foundation structure. The connecting element can be tensioned between the holding element and a fastening section of the holding device attached to the inside of the foundation structure. In particular, the holding element is arranged in the region of an end of the foundation structure facing away from the opening of the foundation structure.

The inventive method relates to laying at least one flexible strand element, in particular in the offshore area, by means of a device according to the invention through an opening of a foundation structure according to the invention, preferably an offshore plant. In particular, in this case the connecting element is held in the region of the opening by means of the holding device exclusively within the foundation structure. Preferably, the foundation structure for partially driving into a subsurface, in particular a seabed, is introduced into a previously provided guide structure. In particular, the guide structure is a tubular structure or a guide tube. The guidance structure may be part of a system for noise reduction during driving or ramming. Preferably, the guide structure is double-walled, wherein in an interior space between the two walls is air. The foundation structure can be guided during driving by means of guide elements of the guide structure resting against an outer side of the foundation structure. The guide elements are arranged within the guide structure and may have wheels or rollers which rest against the outside of the foundation structure. Preferably, the guide structure is removed after driving the foundation structure into the ground.

In particular, an externally accessible connecting cable section and / or gripping section of the connecting element is provided by means of a section of the connecting element which is arranged within the foundation structure and is guided transversely over the opening of the foundation structure. Preferably, the connecting cable section and / or the gripping section of the connecting element, in particular from the outside, is gripped by an underwater vehicle and / or connected to a connecting cable supplied from outside through the opening.

The connecting cable section and / or the gripping section can be pulled out of the interior of the foundation structure through the opening to the outside. In particular, breaks at a sufficient tensile force at least one predetermined breaking point of a predetermined breaking device. If an additional safety device is present, breaks with a sufficient tensile force and the safety device. Preferably, a holding frame of the holding device is broken at a sufficient tensile force and / or bent for passing through the opening of the foundation structure. Here, the holding frame can be performed together with the connecting element through the opening to the outside and / or pulled. Thus, at least one flexible strand element can be guided by means of the connecting element through the opening of the foundation structure.

Of particular advantage is a use of the device according to the invention, the foundation structure according to the invention and / or a method according to the invention for laying at least one flexible strand element through the opening, preferably below the waterline and / or water surface. In particular, the flexible strand element is designed as a cable, a pipe and / or a pipe. Preferably, the use in the installation of a wind turbine in the offshore area and / or when using a monopile as a foundation structure.

It is advantageous that a simple and / or cost-realizable construction can be provided. At the same time a reliable functionality can be guaranteed. In particular, the necessary ship-use times for the production of a connection with the connecting element or rope, preferably by means of an underwater vehicle, are considerably reduced.

Fig. 1

einen schematischen Querschnitt eines Ausschnittes einer Gründungstruktur mit einer erfindungsgemäßen Vorrichtung,

Fig. 2

eine schematische Seitenansicht eines Halteelementes der erfindungsgemäßen Vorrichtung,

Fig. 3

eine schematische Frontansicht einer Halteeinrichtung der erfindungsgemäßen Vorrichtung gemäß Fig. 1,

Fig. 4

eine schematische Seitenansicht einer Sollbrucheinrichtung der Halteeinrichtung gemäß Fig. 3,

Fig. 5

eine schematische Seitenansicht der Halteeinrichtung gemäß Fig. 3, und

Fig. 6

eine weitere schematische Seitenansicht der Halteeinrichtung gemäß Fig. 3.

The invention will be explained in more detail with reference to the figures. Show it:

Fig. 1

a schematic cross section of a section of a foundation structure with a device according to the invention,

Fig. 2

a schematic side view of a holding element of the device according to the invention,

Fig. 3

a schematic front view of a holding device of the device according to the invention Fig. 1 .

Fig. 4

a schematic side view of a predetermined breaking device of the holding device according to Fig. 3 .

Fig. 5

a schematic side view of the holding device according to Fig. 3 , and

Fig. 6

a further schematic side view of the holding device according to Fig. 3 ,

FIG. 1 shows a schematic cross section of a section of a foundation structure 10 with a device 11 according to the invention. The foundation structure 10 is formed in this embodiment as a monopile. Furthermore, the foundation structure 10 is a component of an offshore plant, which is designed in this embodiment as a wind turbine. The foundation structure 10 is driven into a subsoil not shown here below a water surface or waterline 12.

The device 11 is designed as an assembly aid for laying a flexible strand element not shown here. The device 11 has a connecting element 13. In this embodiment, the connecting element 13 is formed as a rope 13. The cable 13 is arranged or held within the foundation structure 10. Here, the cable 13 extends substantially in the longitudinal direction of the foundation structure 10 and in the vertical direction.

Furthermore, the device 11 has a holding device 14. The holding device 14 is arranged at least partially in the region of an opening 15 of the foundation structure 10. Here, the opening 15 is located below the waterline 12 and above the ground, in which the foundation structure 10 is rammed. The opening 15 is provided for passing a flexible strand element, for example a cable and / or a pipe, outwardly from the interior of the foundation structure 10 or vice versa. The holding device 14 in the region of the opening 15 is based on the section AB in the following FIGS. 3 to 6 explained in more detail.

The device 11 has a holding element 16. The cable 13 is stretched between the holding element 16 and a part of the holding device 14 in the region of the opening 15. In this case, the holding element 16 is fastened within the foundation structure 10 and in the region of an upper end of the foundation structure 10 on an inner side 17 of the foundation structure 10. A first end 18 of the cable 13 is assigned to the holding element 16 or fastened to the holding element 16. A remote from the first end 18 second end 19 of the cable 13 is assigned to the holding device 14 or attached to a part of the holding device 14 in the region of the opening 15. The holding element 16 is according to the section AA according to the following FIG. 2 explained in more detail.

In this embodiment, the device 11 further comprises a guide member 22. The guide element 22 is fixed to the inner side 17 of the foundation structure 10. The guide element 22 serves to guide and deflect the cable 13. Here, the guide element 22 is designed to form a scuff protection for the cable 13.

FIG. 2 shows a schematic side view of a holding element 16 of the device 11 according to the invention. In detail, the cut AA according to FIG. 1 shown. The holding element 16 has a connection 20 fastened to the inside 17 of the foundation structure 10. The terminal 20 may be firmly screwed or welded to the inside 17. Furthermore, the holding element 16 has a receiving element 21. The receiving element 21 serves to connect to the first end 18 of the cable 13. In addition, the receiving element 21 is connected to the connection 20. In this embodiment, the receiving element 21 is rotatably mounted on the terminal 20. Furthermore, the receiving element 21 is formed here like a loop or carabiner. The receiving element 21 can be opened and closed for establishing the connection with the first end 18 of the cable 13 or with the connection 20.

FIG. 3 shows a schematic front view of a holding device 14 of the device 11 according to the invention FIG. 1 , In detail, the section AB is according to the FIG. 1 shown. The second end 19 of the cable 13 is connected to a predetermined breaking device 23. The predetermined breaking device 23 is fastened with respect to the upright foundation structure 10 below the opening 15 on the inner side 17 of the foundation structure 10. In this case, at least part of the cable 13 extends across the opening 15. The opening 15 is formed in this embodiment substantially oval.

The holding device 14 has a holding frame 24. Here, the holding frame 24 is formed by way of example ring. The holding frame 24 is arranged in the region of the opening 15. According to double arrow 25, the holding frame 24 has an inner diameter that is greater than the maximum inner width of the opening 15. In this embodiment, the diameter of the holding frame 24 is about 50 cm. In particular, the holding frame 24 is arranged concentrically with the opening 15.

The cable 13 is connected to the support frame 24 at a first location 26 of the support frame 24. The support frame 24 forms a frame opening 27. At least a portion of the cable 13 extends from the first location 26 of the support frame 24 across the frame opening 27 to a second location 28 of the support frame 24. Here, the portion of the cable extending over the frame opening 27 forms 13 a gripping and / or connecting cable section 29. The gripping and / or connecting cable section 29 is through the opening 15 accessible from the outside. In this embodiment, the gripping and / or connecting cable section 29 is provided with an additional protective cover.

Here, the rope 13 is also formed of several strands of rope. At least a first strand of rope of the rope 13 is, starting from the first point 26 of the support frame 24, guided across the frame opening 27 to the second point 28 of the support frame 24. At least one second strand of rope 13 is guided from the first location 26 along the support frame 24 to the second location 28. At least one further or third cable strand of the cable 13 is guided from the first location 26 along the holding frame 24 to the second location 28. Here, the second strand of rope of the cable 13 is guided along a first substantially semi-annular portion 30 of the holding frame 24 and the third strand of rope 13 along a different from the first portion 30 second, substantially semi-annular portion 31 of the support frame 24 out. The two sections 30, 31 together form the support frame 24. The second strand of rope and the third strand of rope are connected to the respective section 30, 31 with the support frame 24 and secured thereto. Starting from the second point 28, all cable strands of the cable 13 are again guided together in the direction of the predetermined breaking device 23. In this embodiment, for this purpose, the cable strands of the rope 13 in sections 32 in the region of the second point 28 and the second end 19 of the cable 13 are connected or spliced together in a suitable manner.

The second end 19 of the cable 13 and the predetermined breaking device 23 are arranged below the opening 15 with respect to an upright foundation structure 10. Above the opening 15, in this exemplary embodiment, there is a fastening device 33. The fastening device 33 is fastened to the inner side 17 of the foundation structure 10. By means of the fastening device 33, the cable 13 is additionally guided and / or held.

Both the fastening device 33 and the predetermined breaking device 23 will be explained in more detail with reference to the following figures.

FIG. 4 shows a schematic side view of a predetermined breaking device 23 of the holding device 14 according to FIG. 3 , The predetermined breaking device 23 has a connecting section 34. The connecting portion 34 is connected to the second end 19 of the cable 13. In this embodiment, the connecting portion 34 is formed as a shackle.

Furthermore, the predetermined breaking device 23 has a fastening section 35. The attachment portion 35 is connected to the connection portion 34. Here, the attachment portion 35 is also attached to the inside 17 of the foundation structure 10.

The predetermined breaking device 23 has a predetermined breaking point 36. In this embodiment, the predetermined breaking point 36 is designed to accommodate a maximum tensile load of up to 2,000 kg. The predetermined breaking point 36 is assigned to a first part 37 of the fastening section 35. The first part 37 of the attachment portion 35 is bolted to a further part 38 of the attachment portion 35. Here, the further part 38 of the attachment portion 35 is attached to the inside 17, for example, welded.

In this embodiment, the holding device 14 has an additional securing device 39. The securing device 39 is designed to prevent unwanted and / or premature release of the cable 13 from the holding device 14 or from the predetermined breaking device 23. In this case, the securing device 39 bridges the predetermined breaking point 36. The securing device 39 is connected, on the one hand, to the fastening section 35 and, on the other hand, to the connecting section 34 of the predetermined breaking device 23. In detail, the securing device 39 in this exemplary embodiment has a fastening part 40 and a cable element 41. The fastening part 40 is fastened to the further part 38 of the fastening section 35. With the fastening part 40, the cable element 41 is connected. Furthermore, the cable element 41 is connected to the connecting section 34. In this embodiment, the cable member 41 is formed as a wire rope for receiving a tensile load of up to 1,500 kg. If the predetermined breaking point 36, for example when ramming the foundation structure 10 due to sufficiently large transverse forces should break prematurely, the cable 13 is still reliably held on the mounting portion 35 due to the additional securing device 39.

FIG. 5 shows a schematic side view of the holding device 14 according to FIG. 3 , Good to see that due to the fastening device 33, the cable 13 is held from the inside 17 of the foundation structure 10 spaced. As a result, the tensioned cable 13 and the support frame 24 is not in the region of the opening 15 on the inside 17, but is spaced from the inside 17. In an alternative embodiment, the cable 13 may also be guided such that the holding frame 24 rests against the inside 17 in a region of an edge of the opening 15.

Furthermore, an underwater vehicle 42 is shown here. The underwater vehicle 42 is remotely controllable and is controllable, for example, by a ship not shown here. The underwater vehicle 42 has a gripping element 43. By means of the gripping element 43, the underwater vehicle 42 engages from the outside through the opening 15 in the interior of the foundation structure 10. Here, the gripping member 43 for gripping the gripping and / or connecting cable section 29 of the rope 13 in Area of the frame opening 27 is formed. Alternatively or additionally, the gripping element 23 may be designed to establish a connection between the gripping and / or connecting cable section 29 and a connecting cable not shown here.

FIG. 6 shows a further schematic side view of the holding device 14 according to FIG. 3 , Here, a connecting cable 44 is connected to the gripping and / or connecting cable section 29 of the holding device 14 by means of a connecting end 45 of the connecting cable 44. Such a connection can, for example, with an underwater vehicle 42 according to FIG. 5 getting produced. The connecting cable 44 is connected to a traction device, not shown here. The traction device in turn can be arranged, for example, on a ship.

In a sufficiently strong train by means of the connecting cable 44 on the gripping and / or Verbindungsseilabschnitt 29 of the cable 13 to the outside a breakage of the predetermined breaking point 36 of the predetermined breaking device 23 is caused. The securing device 39 is also separated at a second predetermined breaking point 46. In addition, in this embodiment, the fastening device 33 has a further predetermined breaking point 47. This further predetermined breaking point 47 is separated at a sufficient tensile force on the cable 13 by means of the connecting cable 44.

Hereinafter, the operation of the device 11 according to the invention will be described on the basis of FIGS. 1 to 6 explained in more detail:

The device 11 is mounted within the foundation structure 10. For this purpose, the fastening section 35, the fastening device 33, the guide element 22 and the retaining element 16 are fastened to the inner side 17 of the foundation structure 10. Here, the attachment can be done for example by means of screwing or welding. With respect to an intended upright position of the foundation structure 10, the attachment portion 35 is disposed below the opening 15. The fastening device 33, the guide element 22 and the holding element 16 are fastened above the opening 15 on the inner side 17. The rope 13 is stretched between the attachment portion 35 and the holding member 16.

The holding frame 24 is arranged in the region of the opening 15 such that the frame opening 27 of the holding frame 24 is substantially superimposed on the opening 15 or the holding frame 24 is positioned substantially concentrically with the opening 15.

After installing or ramming the foundation structure 10 at a mounting location, the opening 15 is located below the waterline 12. For example, by means of a Underwater vehicle 42, the opening 15 is penetrated from the outside inwards. In this case, the underwater vehicle 42 can grasp the gripping and / or connecting cable section 29 of the cable 13 extending transversely across the frame opening 27 and / or connect a connecting cable 44 to the gripping and / or connecting cable section 29.

With a sufficient tensile force on the connecting cable 44 or a sufficient tensile force due to an underwater vehicle 42 engaging the gripping and / or connecting cable section 29 in a direction from inside to outside, the holding frame 24 is pulled against the inner side 17 in the region of an edge of the opening 15. At a sufficiently high tensile force, the intended breaking points 36, 46 and 47 are broken or separated. In addition, the holding frame 24 is bent or broken at a sufficient tensile force so that it can be pulled through the opening 15 to the outside together with the cable 13. If the first end 18 of the cable 13 has previously been connected to a flexible strand element, such as a cable or a line, then the strand element, a cable or a line can be reliably removed by means of the device 11 according to the invention in the offshore Lay the area from the interior of the foundation structure 10 to the outside.

List of reference numbers :

10

foundation structure

11

contraption

12

waterline

13

connecting element

14

holder

15

opening

16

retaining element

17

inside

18

First end

19

Second end

20

connection

21

receiving element

22

guide element

23

Break-off device

24

holding frame

25

double arrow

26

First place

27

frame opening

28

Second place

29

Gripping and / or connecting cable section

30

First section

31

Second subsection

32

section

33

fastening device

34

connecting portion

35

attachment section

36

Breaking point

37

First part

38

Another part

39

safety device

40

attachment portion

41

cable element

42

Underwater vehicle

43

gripping element

44

connecting cable

45

connecting end

46

Second predetermined breaking point

47

Further predetermined breaking point

Claims (15)

Device, in particular an assembly aid, for laying at least one flexible strand element, with a connecting element (13) for arranging within a foundation structure (10) and with a holding device (14) for holding the connecting element (13) on the foundation structure (10) characterized in that the holding device (14) for releasably holding the connecting element (13) in the region of an opening (15) of the foundation structure (10) is formed exclusively within the foundation structure (10). Apparatus according to claim 1, characterized in that the connecting element (13) by means of the holding device (14) at least in the region of the opening (15) exclusively within the foundation structure (10) is releasably held and / or that connecting element (13) formed as a rope in particular, the foundation structure (10) is part of an offshore installation, preferably the device (11) and / or the connection element (13) for laying the flexible strand element in the offshore area is formed below a waterline (12). Apparatus according to claim 1 or 2, characterized in that the holding device (14) has a predetermined breaking device (23) with a predetermined breaking point (36), in particular the connecting element (13) is connected to the predetermined breaking device (23), preferably the predetermined breaking device (23 ) for connecting and / or welding to an inner side (17) of the foundation structure (10), particularly preferably the predetermined breaking device (23) has a connection section (34) for connection to the connection element (13) and / or a fastening section (35) for fastening the predetermined breaking device (23) on the inner side (17) of the foundation structure (10), in particular the connecting portion (34) with the fixing portion (35) by means of the predetermined breaking point (36) releasably connected to each other, preferably the predetermined breaking point (36) Picking up a tensile load of up to 2,000 kilograms. Device according to one of the preceding claims, characterized in that the holding device (14) for preventing undesired and / or premature release of the connecting element (13) from the holding device (14) and / or from a predetermined breaking device (23) has a securing device (39). has, in particular bridges the securing device (39) a predetermined breaking point (36) of the predetermined breaking device (23), preferably the securing device (39) with a connecting portion (34) and with a fixing portion (35) of Breaking device (23) connected, in particular, the securing device (39) on a wire rope and / or is designed to absorb a tensile load of up to 1,200 kilograms or up to 1,500 kilograms. Device according to one of the preceding claims, characterized in that the holding device (14) has a holding frame (24) for arranging in the region of the opening (15) of the foundation structure (10) and the connecting element (13) at least partially with the holding frame (24). In particular, at least a part of the connecting element (13) is guided transversely over the holding frame (24), preferably at least a part of the connecting element (13) starting from a first point (26) of the holding frame (24) across a means of the Holding frame (24) formed frame opening (27) to an opposite second point (28) of the holding frame (24) guided and / or stretched, in particular, the connecting element (13) at the first position (26) and / or the second point ( 28) attached to the support frame (24). Apparatus according to claim 5, characterized in that the connecting element (13) designed as a cable is formed from a plurality of cable strands and at least one first cable strand from the first location (26) of the holding frame (24) across the frame opening (27) to the second location (28) of the holding frame (24) is guided and / or tensioned, at least a second strand of rope from the first location (26) of the holding frame (24) along the holding frame (24) to the second location (28) of the holding frame (24) out and / or is held, in particular at least a second strand of cables from the first position (26) of the holding frame (24) along a first portion (30) of the holding frame (24) to the second location (28) of the holding frame (24) and Preferably, at least a third strand of rope from the first location (26) of the support frame (24) is along a second portion (31) of the support frame (24) different from the first portion (30) the second position (28) of the holding frame (24) guided and / or held. Device according to one of claims 5 or 6, characterized in that the holding frame (24) deformable, elastic, annular and / or formed of a plastic, in particular, the holding frame (24) has at least one predetermined breaking point, preferably, the holding frame (24 ) has a diameter and / or a width which is greater than an inner diameter or an inner width of the opening (15) of the foundation structure (10). Foundation structure with a device (11) according to any one of the preceding claims, in particular, the foundation structure (10) has an opening (15) in a side wall, wherein the opening (15) for placing in a region below a waterline (12) on the foundation structure (10) is arranged and the opening (15) is provided for performing at least one flexible strand element, in particular by means of the holding device ( 14) within the foundation structure (10) arranged connecting element (13) for providing a Sorgleinen function. Foundation structure according to claim 8, characterized in that the connecting element (13) in the region of the opening (15) by means of the holding device (14) is arranged exclusively within the foundation structure (10), preferably, the connecting element (13) at least partially across the opening (15), in particular, a section of the connecting element (13) guided transversely across the opening (15) provides an externally accessible gripping section (29) for connection to an underwater vehicle (42) and / or a connecting cable (44). Foundation structure according to one of claims 8 or 9, characterized in that a holding frame (24) of the holding device (14) within the foundation structure (10) in the region of the opening (15) is arranged, in particular rotates the support frame (24) at least partially an inside Edge of the opening (15) and / or the holding frame (24) is at least partially or completely against the inside edge of the opening (15). Foundation structure according to one of claims 8 to 10, characterized in that the connecting element (13) within the foundation structure (10), in particular with a tensile load of up to 200 kilograms, is biased, preferably, the holding device (14) on the foundation structure ( 10) fastened holding element (16), wherein the connecting element (13) between the holding element (16) and a on the inside (17) of the foundation structure (10) fixed mounting portion (35) of the holding device (14) is stretched. A method for laying at least one flexible strand element by means of a device (11) according to one of the preceding claims 1 to 7 through an opening (15) of a foundation structure (10) according to one of claims 8 to 11, in particular the connecting element (13) in the region Opening (15) by means of the holding device (14) held exclusively within the foundation structure (10), preferably the foundation structure (10) for partial driving into a substrate in a previously provided guide structure is introduced, in particular the foundation structure (10) during the driving by means of on an outside guided guide elements of the guide structure of the foundation structure (10), preferably the guide structure is removed after driving the foundation structure (10). A method according to claim 12, characterized in that by means of a within the foundation structure (10) and arranged transversely over the opening (15) guided portion of the connecting element (13) an externally accessible gripping portion (29) is provided, preferably the gripping portion ( 29) of the connecting element (13) of an underwater vehicle (42) and / or connected to a connecting cable (44). A method according to claim 13, characterized in that the gripping portion (29) from the interior of the foundation structure (10) through the opening (15) is pulled outwards, in particular breaks at a sufficient tensile force a predetermined breaking point (36, 46, 47) of a predetermined breaking device (23) and / or a securing device (39), preferably a holding frame (24) of the holding device (14) is broken at a sufficient tensile force and / or bent for passing through the opening (15). Use of a device according to one of claims 1 to 7, a foundation structure (10) according to any one of claims 8 to 11 and / or a method according to any one of claims 12 to 14 for laying at least one flexible strand element, in particular a cable, a line and / or a pipe, through the opening (15) and / or below the waterline (12), preferably when installing a wind turbine offshore and / or when using a monopile as a foundation structure (10).

Images