EP2423390A1 - Swivelling module for use when producing an underwater foundation of a structure - Google Patents

Abstract

The method involves providing a base element as a module carrier (11) at the erection site, where a pile (6) forms the foundation to be created or is a component of the foundation. The pile is implemented as a hollow body. The pile is clamped in a pivot module, by erecting the pile by pivoting the pivot module, until the desired driving direction into the ground (9) relative to the horizontal is achieved, by locking the pivot module after erecting the desired slope, by sinking the pile to the floor (8) of the water system (7) and pressing it into the floor until a limit value of a driving. Independent claims are also included for the following: (1) a device for creating an underwater foundation of a building; and (2) a pivot device for pivoting a pile in the creation of an underwater foundation.

Description

The invention relates to a swivel module for use in creating an underwater foundation of a building.

In the construction of structures that support their foundations on ground, which is under water, these foundations are made in different ways, with one-piece foundations, the use of so-called monopiles, ie single piles, have prevailed. An alternative to this is the so-called jacket, which is a pyramidal structure which has several foundation points. Such buildings are, for example, wind turbines or bridge structures.

According to the state of the art, for example, so-called jackup rigs are provided at monopiles at the construction site, the working plane of which is provided with a slewing mechanism. In this swinging the pole is clamped, deflected from the horizontal to the vertical and lowered by opening the clamps on the seabed. The pile is then driven into the ground by means of pile driving.

A disadvantage of this foundation process is the dependence on the local geology. If the soil is provided with constituents which prove to be non-rammable, for example by solid rock or by the presence of loam layers in which the friction increases too much or the presence of boulders or the like, this process can not be used. A further disadvantage of this method, especially in ecologically sensitive areas, is that high noise emissions emanate from this method.

JP 60-144417 discloses a pivoting device for monopiles. the pivoting device has two holding clamps, in which the monopile is used. The pivoting is hydraulic. The lowering is done only by gravity.

The invention is therefore based on the object of providing pivoting module that is used in a method and a device with which it is possible to erect foundations from single piles in geologically difficult conditions. These should simultaneously be usable in ecologically sensitive areas.

Such a method provides that the pile is clamped in a swivel module, that the pile is erected by pivoting the swivel module until the desired propulsion direction is achieved in the ground with respect to the horizontal, that the stake deposited on the bottom of the water and until reaching a limit value of the feed force, it is moved into the bottom of a sinking device installed in the pile and lowered on the ground, that the rock is released below the pile and the pile is lowered until a final depth is reached.

By providing a sinking device that is adaptable to the particular soil conditions, it becomes possible to use hollow piles as foundations in non-rammable soils. At the same time eliminates the active lowering of the pile and the release of the rock through the Abteufvorrichtung the ram noise caused by the environment.

Another teaching here provides that the base element is a jack-up, a pontoon and / or a ship. This makes it possible, depending on the body of water, to provide a suitable basis for carrying out the method.

Another teaching here provides that the swivel module is locked after reaching the desired inclination. As a result, a higher accuracy is achieved.

Another teaching here provides that the pile is designed as a cylinder or cuboid. These shapes are advantageous in terms of foundation construction and placement of the pile in the ground. Furthermore, it is provided that the pile has an inner diameter from 4 m and greater, with diameters of 11 m or more can be built.

A further teaching here provides that the feed force is generated via at least one feed element arranged on the swivel module, preferably a hydraulic cylinder. As a result, in a simple and direct manner, the necessary feed force can be provided directly on the pile in conjunction with the swivel module and an additional feed device, such as the piling device, can be omitted.

Another teaching here provides that at least one winch for raising and lowering the Abteufvorrichtung is provided so that a direct driving the winch with respect to the position within the pile is possible. Particularly preferably, the winch is provided directly above the pile, particularly preferably on a platform at the upper end of the pile, so that no additional installations on the base support are necessary.

Another teaching here provides that the interior of the pile is filled with water to prevent breakage of the bottom, and that the water level in the pile has the height of the water level of the water body or higher than this. As a result of this measure, it is possible, in particular in the case of variable soils, to prevent the sole from sinking or breaking in below the pile and thus impairing the progress of the excavation.

Another teaching provides that a resulting overcut is filled after drilling. This will provide an optimal anchoring (if the Overcut after lowering the pile on the outside of the pile has continued to exist).

Another teaching here provides that the sinking with the Abteufvorrichtung is carried out fully automatically or unmanned. For this purpose, offer vertical shaft drilling machines, which operate preferably in partial or full-scale operation and are provided with drilling devices in which, depending on the geology, the mining tools such as chisel or paring knife replace and adapt to the given conditions.

Such a device provides that it is provided with a base element as a module carrier, wherein the base element, a pivot module is arranged with which the post can be pivoted, wherein the swivel module is a feed module for lowering the pile is provided and a lock for locking the Swivel module is provided. Furthermore, a Abteufmodul which is disposed within the pile and at least one lifting module for lowering / raising the Abteufmoduls provided in the pile. By such a device can be easily perform an adaptation to given geologies and reduce the environmental impact of the sound emission and the like.

Preferably, the base element as a module carrier is a lifting island, a pontoon and / or a ship. Furthermore, it is advantageous that the pile is designed as a cylinder or cuboid and that the inner diameter of the pile has 4 m or more, with diameters of 11 m or more are technically feasible. Furthermore, it is advantageous that a feed element is arranged on the swivel module, which is preferably a hydraulic cylinder, whereby it is possible controlled to release the pile in the swivel module and press it into the ground, provided that the feed force generated thereby does not exceed certain parameters. Advantageously, the accumulating loose rock inside the pile is discharged by means of excavators and flushing pumps. To raise and lower the Abteufvorrichtung is preferably provided on a platform, particularly preferably directly in the upper end of the pile, at least one winch.

Another teaching here provides that the Abteufvorrichtung is a partial or full-sectional device, which is particularly preferably designed as a shaft boring machine. This is preferably fully automatic or unmanned designed during the Abteufvorgangs. Depending on the geology, the tools for loosening the rock are adjusted using chisels or paring knives.

Another teaching here provides that the Abteufvorrichtung has at least one locking against the inner wall of the pile, and that the Abteufvorrichtung relative to the lock with the Abteufwerkzeug and / or can move to the sole. As a result, the set-up of the Abteufvorrichtung be reduced during the Abteufvorgangs.

To solve the inventive task, a pivoting device for pivoting a pile is provided in the creation of an underwater foundation, with a support element, which is arranged on a base element of the erection device, with a pivot body which is connected via a pivot bearing and at least one feed element to the support element, wherein on the pivot body, a guide element for the pile and a retaining ring are provided with at least one holding ring arranged on the holding element for locking the stake, and with a second retaining ring, at least with a holding element for locking the pile is provided with the pivoting device via at least one Feed element is movably connected with respect to this.

By the pivoting device, which is provided with a feed element, and by the holding elements on two different sections of the pivoting device, it becomes possible to control the lowering of the pile with respect to the pivoting device and at the same time, depending on the existing geology, an advance of the pile into the ground cause noise emissions by ramming and the like omitted. Advantageous in the pivoting device is when the advancing elements are hydraulic cylinders. The bracing of the retaining rings can also be provided by hydraulic cylinders, whereby an adaptation to different diameters can be achieved. The base element is preferably a jack-up platform, a pontoon and / or a ship. The holding elements, which are preferably provided within the retaining rings, are preferably hydraulically driven. Furthermore, it is advantageous that the first and second retaining ring are arranged directly above each other parallel to each other and are directly connected to each other via the feed element. Furthermore, it is advantageous that at the upper end of the pivoting device, a guide ring is provided, and / or that guide and retaining rings have the same cross-sections as the pile. Particularly preferably, the pivoting device is used in the method according to the invention and in the device according to the invention.

Fig. 1

eine teilweise geschnittene Seitenansicht einer erfindungsgemäßen Vorrichtung bei der Durchführung des erfindungsgemäßen Verfahrens,

Fig. 2

eine räumliche Seitenansicht einer erfindungsgemäßen Abteufvorrichtung, und

Fig. 3

eine dreidimensionale teilweise geschnittene Seitenansicht einer erfindungsgemäßen Vorrichtung bei der Durchführung des erfindungsgemäßen Verfahrens.

The invention will be explained in more detail below with reference to a preferred embodiment in conjunction with a drawing. Showing:

Fig. 1

a partially sectioned side view of a device according to the invention in carrying out the method according to the invention,

Fig. 2

a spatial side view of a Abteufvorrichtung invention, and

Fig. 3

a three-dimensional partially sectioned side view of a device according to the invention in carrying out the method according to the invention.

Fig. 1 shows a device according to the invention. On a working platform 11, which is connected via support posts 12 to the seabed 8, a swivel module 13 is arranged. The swivel module 13 consists of a carrier element 14 which has a pivot bearing 52. About the pivot bearing 52, the support member 14 is connected to a pivot member 15. Furthermore, the carrier element 14 with the pivoting element 15 via a pivoting cylinder 16 connected, which allows pivoting of the pivot member 15 with a pivot module 13 arranged in the pile 6 from the horizontal to the vertical. In Fig. 1 the orientation of the pile 6 is vertical. An incidence of the pile 6 relative to the horizontal is also possible. If the desired installation angle with respect to the horizontal is reached, the pivoting element 15 is fixed to the carrier element 14 via a lock 22.

On the pivot member 15, a guide ring 17 is arranged at the upper end. Through the guide ring 17 through the pile 6 is inserted into the pivot module 13. Furthermore, a first retaining ring 18 is provided on the pivoting element 15, which is also connected via a diagonal traverse 21 with the pivoting element 15 for stabilization purposes. In the retaining ring 18 holding elements (not shown) are arranged, which allow a fixation of the pile 6 relative to the retaining ring 18. Below the first retaining ring 18, a second retaining ring 19 is provided, which is connected via thrust cylinder 23 with the first retaining ring 18. Within the second retaining ring 19 also holding elements 20 are provided, which are hydraulically driven and produce a holding connection with the pile 6 in hydraulic loading. To lower the pile 6 through the swivel module 13, the holding elements in the first holding ring 18 are released while the holding elements 20 remain fixed in the second holding ring 19. Subsequently, the thrust cylinder 23 is acted upon hydraulically and it is a corresponding feed force in the mounting direction of the pivot module 13 away on the post 6 and this is advanced or pressed into the ground.

Are the thrust cylinder 23 is fully extended, the holding elements are locked in the first retaining ring 18 and the holding elements 20 dissolved in the second retaining ring 19 and the thrust cylinder 23 retracted again, whereby the second retaining ring 19 is moved back to the first retaining ring 18. When extending the push cylinder 23 and thus during the pressing of the pile 6, the resulting thrust is monitored, so that the pile 6 is not excessively inserted into the bottom 9 to avoid damage to the pile. It is possible to simultaneously lower the pile 6 via the pivot module 13 by the push cylinder 23, while a pole 6 arranged in the Abteufvorrichtung 24 the bottom 9 of a sole 43, which is located below the pile 6, drilled. The retaining rings 18, 19 have locking cylinders 47 (see Fig. 3 ), over which a certain diameter adjustment with respect to the pile 6 and, alternatively, a certain pressing of the retaining ring on the pile 6 as an alternative retaining element is possible.

Fig. 2 shows a Abteufvorrichtung invention 24. The Abteufvorrichtung 24 is connected via winches 25 which are located on platforms 26 which are arranged at the upper end of the pile 6, movably connected to the other device. The winches 25 have a winch hook 39, which engages in corresponding winch stops 38 at the top of the Abteufvorrichtung 24. About the winches 25, the Abteufvorrichtung 24 can be raised or lowered in the vertical direction within the pile 6. The sinking device 24 has at its upper end a power connection 40, via which a supply line 41 is connected to the sinking device 24. The supply line 41 is connected to a supply winch 42. The energy supply of the sinking device 24 is provided via the supply line. Furthermore, a discharge of the dissolved rock is also possible via this line.

The Abteufvorrichtung 24 has a Abteufeinheit 27 and a locking unit 34, which are each arranged on a base body. The Abteufeinheit 27 has a telescopic arm 28, at the end of which is a roller 29 with the removal tools 30 disposed thereon. The removal tools 30 may be chisels or paring knives, with this arrangement of the respective tools 30 being selected as a function of the types of rock to be loosened. The telescopic arm 28 has a telescopic cylinder 33, through which the roller 29 can be moved in the telescopic direction 51. Furthermore, the dismantling unit 27 on a slewing 31. Between slewing gear 31 and 28 degradation arm at least one pivot cylinder 32 is provided, which is extendable in the pivoting direction 50 and thus also allows movement of the roller 29. The slewing gear 31 allows pivoting of the roller 29 in the direction of rotation 48.

Furthermore, the removal device 24 has a locking unit 34, which in the present case consists of four arms 35 at the respective end of which a wall connection 36 with holding elements 37 is provided. The holding elements engage in the inner wall of the pile 6. Between holding member 37 and wall terminal 36 is a lowering of the mining device 24 in the lowering 49 possible, whereby the roller 29 can also be moved against the rock.

To avoid a base fracture of the sole 43, the interior of the pile 6 is filled with water. The fill level corresponds to either the water level 7 or the water level in the pile 44. Any overcut 45 that may be created when cutting free the sole area to lower the pile 6 must be backfilled after completion of the lowering of the pile 6 to its final depth unless the pending rock overcuts 45 closes automatically.

On the work platform 11, the energy supply units 46 and accommodations for the crews, etc., auxiliary drives, main drives are also provided with a possible treatment of a drilling fluid to be used, for example, due to the risk of breakage.

The method is as follows: A lifting platform with a working platform 11 and retractable support posts 12 is equipped with a pivoting device 13 and the corresponding supply units 46. Furthermore, a pile 6 in the horizontal already arranged in the pivoting device 13. Furthermore, a sinker 24, which is a vertical shaft boring machine, and the associated winches and drive units are arranged on the jack. If further transport capacities in the sense of further piles 6 are necessary, they can be brought to the jack-up platform mounted at the installation site via a barge or the like. After erecting and anchoring the lifting platform, the pile 6 is inserted into the pivoting module 13 and connected thereto. Subsequently, the pivot module 13 is erected with the pile 6 about the pivot point 52 by the pivot cylinder 16 in the vertical position, the Lock 22 mounted, the pile 6 lowered with the push cylinder 23 and the holding elements 20 in the first retaining ring 18 and second retaining ring 19 on the seabed 8 and positioned at the direction of the pile 8. Subsequently, as long as the geology permits or the rock of the seabed allows it to be pressed into the soil 9 via the feed cylinder 23 of the pile 6. At the same time, the proportion of rock located in the pile interior is removed from the pile 6, for example by an excavator, and either temporarily stored on site or brought ashore for landfill. Intermediate storage takes place when the interior of the pile 6 is to be backfilled with this material after lowering the pile 6 to its final position. During the pressing of the pile 6 in the bottom 9 by the feed cylinder 23, the feed force is monitored. If the force occurring exceeds a limit value, the pressing process is completed and the mechanical propulsion through the lowering device 24 is initiated. For this purpose, the winches 25 are mounted on the platforms 26 at the upper end of the pile 6, and the sinker 24 in the form of a vertical well drilling machine is connected to the winches 25 via the winch hooks 39. Furthermore, the supply line 41 is connected to the sinking device 24 via the energy connection 40. Anschießend the vertical shaft boring machine is lowered to the bottom 43 and the rock 9 in the sole region 43 is solved by the rotation of the roller 29 with the chisels 30. The dissolved rock is carried away from the drilling area and also stored after separation or landfilled. By pivoting the roller 29 in the direction of rotation 48, telescopic direction 51 and pivoting 50, the degradation of the rock takes place 9. At the same time the Abteufvorrichtung 24 is lowered in the lowering 49. If the maximum lowering is achieved, the sinking device 24 is locked via the wall connection 36 and the holding element 37 is retracted again into the wall connection 36, so that the lowering can start again from the beginning. After reaching the final depth of the pile 6, the Abteufvorrichtung 24 and the winches 25 are removed. At the same time, if necessary, the overcut 45 is pressed and, if necessary, the interior of the pile 6 is filled with the dissolved rock or other materials such as concrete. Furthermore, the pivot module 13 is released from the pile 6 and in turn guided back into the horizontal. Subsequently, the Preparatory work for the construction of the structure on the foundation thus created.

Further embodiments:

Embodiment 1 is a method for creating an underwater foundation of a structure in which a base element is provided as a module carrier at the erection site and pile is provided, which forms the foundation to be created or is part of the foundation, wherein the pile is designed as a hollow body, characterized that the pile is clamped in a swivel module, that the pile is erected by pivoting the swivel module until the desired propulsion direction is achieved in the ground with respect to the horizontal, that the pile is lowered to the bottom of the water body and until reaching a limit value pushing a feed force into the ground, installing a sinker in the pile and lowering it to the ground, releasing the rock below the pile, and lowering the pile until a final depth is reached.

Embodiment 2 is a method according to embodiment 1, characterized in that the base element is a jack-up, a pontoon and / or a ship.

Embodiment 3 is a method according to embodiment 1 or 2, characterized in that the pile is designed as a cylinder or cuboid.

Embodiment 4 is a method according to one of the embodiments 1 to 3, characterized in that the pile has an inner diameter from 4 m.

Embodiment 5 is a method according to one of the embodiments 1 to 4, characterized in that the feed force over at least one arranged on the pivot module feed element, preferably a hydraulic cylinder, is generated.

Embodiment 6 is a method according to one of the embodiments 1 to 5, characterized in that at least one winch for raising and lowering the Abteufvorrichtung is provided.

Embodiment 7 is a method according to one of the embodiments 1 to 6, characterized in that the interior of the pile is filled to prevent ground breaking with water and that the water level in the pile has the height of the water level of the water body or higher.

Embodiment 8 is a method according to one of the embodiments 1 to 7, characterized in that an overcut resulting from the cutting out of the rock is filled after the sinking.

Embodiment 9 is a method according to one of the embodiments 1 to 8, characterized in that the sinking with the Abteufvorrichtung is carried out fully automatically or unmanned.

Embodiment 10 is a method according to one of the embodiments 1 to 9, characterized in that it is the Abteufvorrichtung to a partial cutting device or a full-sectional device.

Embodiment 11 is a method according to one of the embodiments 1 to 10, characterized in that are used to release the rock chisel or paring knife.

Embodiment 12 is a device for creating an underwater foundation of a building with a base element as a module carrier, arranged on the base element pivoting module for pivoting a pile, wherein on the pivot module a feed module for lowering the pile is provided with a lock for locking the pivot module and a Abteufvorrichtung which is disposed within the pile and at least one lifting module for raising / lowering the Abteufvorrichtung is provided in the pile.

Embodiment 13 is a device according to exemplary embodiment 12, characterized in that the base element is a lifting island, a pontoon and / or a ship.

Embodiment 14 is a device according to embodiment 12 or 13, characterized in that the pile is designed as a cylinder or cuboid.

Embodiment 15 is a device according to one of the embodiments 12 to 14, characterized in that the pile has an inner diameter from 4 m.

Embodiment 16 is a device according to one of the embodiments 12 to 15, characterized in that a feed element is arranged on the swivel module, preferably a hydraulic cylinder, by which the feed force for the pile is generated.

Embodiment 17 is a device according to one of the embodiments 12 to 16, characterized in that at least one winch for raising and lowering the Abteufvorrichtung is provided.

Embodiment 18 is a device according to one of the embodiments 12 to 17, characterized in that the Abteufvorrichtung is designed so that the Abteufvorgang is fully automatic or unmanned feasible.

Embodiment 19 is a device according to one of the embodiments 12 to 18, characterized in that it is in the Abteufvorrichtung to a partial cutting machine or a full-cut machine.

Embodiment 20 is a device according to one of the embodiments 12 to 19, characterized in that are provided as a tool for releasing the rock chisel and / or paring knife.

Embodiment 21 is a device according to one of the embodiments 12 to 20, characterized in that the Abteufvorrichtung has at least one locking against the inner wall of the pile and that the Abteufvorrichtung relative to the locking with the Abteufwerkzeug and / or in total to the sole is movable.

Embodiment 22 is a method according to one of the embodiments 1 to 11, characterized in that that the building is a wind turbine and / or a bridge.

Embodiment 23 is a method according to one of the preceding embodiments, characterized in that the pivot module is locked after reaching the desired inclination.

Embodiment 24 is a method according to one of the embodiments 1 to 11, characterized in that it is the pivoting module is a subsequent pivoting device.

Embodiment 25 is a device according to one of the embodiments 12 to 20, characterized in that it is the pivot module is a subsequent pivoting device.

Embodiments for the Schwenkvorichtung

Embodiment 25 is a pivoting device for pivoting a pile in the construction of an underwater foundation of a structure with a support element, which is arranged on a base element of the erection device, with a pivot body which is connected via a pivot bearing and at least one feed element to the support element, wherein on the pivot body a guide element for the pile and a retaining ring with at least one holding element arranged on the retaining ring for locking the pile are provided and with a second retaining ring which is provided with at least one holding element for locking the pile, which is connected to the pivoting device via at least one feed element for generating a feed force movable with respect to the pivoting device ,

Embodiment 26 is a pivoting device according to embodiment 25, characterized in that the advancing element is a hydraulic cylinder.

Embodiment 27 is a pivoting device according to embodiment 25 or 26, characterized in that the base element is a jack-up, a pontoon and / or a ship.

Embodiment 28 is a pivoting device according to one of the embodiments 25 to 27, characterized in that the holding element is hydraulically driven.

Embodiment 29 is a pivoting device according to one of the embodiments 25 to 28, characterized in that the first retaining ring and the second retaining ring are arranged directly above one another and are connected to at least one feed element.

Embodiment 30 is a pivoting device according to one of the embodiments 25 to 29, characterized in that the guide and retaining rings have the same cross-sectional shape as the pile.

LIST OF REFERENCE NUMBERS

6

stake

7

water level

8th

seabed

9

ground

10

contraption

11

working platform

12

support bracket

13

swivel module

14

support element

15

pivoting element

16

swing cylinders

17

guide ring

18

first retaining ring

19

second retaining ring

20

retaining element

21

Diagonal Traverse

22

lock

23

push cylinder

24

Abteufvorrichtung

25

winch

26

platform

27

dismantling unit

28

telescopic arm

29

roller

30

chisel

31

slewing

32

swing cylinders

33

telescopic cylinders

34

locking unit

35

poor

36

wall connection

37

retaining element

38

wind stop

39

wind hook

40

power connection

41

supply line

42

supply winds

43

sole

44

Water level in the pile

45

overcut

46

energy unit

47

lock cylinders

48

direction of rotation

49

lowering

50

pan direction

51

telescopic direction

52

pivot bearing

Claims (6)

Swivel module for pivoting a pile in the creation of an underwater foundation of a structure with a support element which can be arranged on a base element of a construction device, with a pivot body which is connected via a pivot bearing and at least one feed element to the support element, wherein on the pivot body, a guide element for the Pile and a retaining ring with at least one holding ring arranged on the holding element for locking the pile are provided and with a second retaining ring, which is provided with at least one retaining element for locking the pile, and with the swivel body via at least one feed element for generating a feed force movable Related to the swivel body is connected. Swivel module according to claim 1, characterized in that the feed element is a hydraulic cylinder. Swivel module according to claim 1 or 2, characterized in that the base element is a jack-up, a pontoon and / or a ship. Swivel module according to one of claims 1 to 3, characterized in that the holding element is hydraulically driven. Swivel module according to one of claims 1 to 4, characterized in that the first retaining ring and the second retaining ring are arranged directly above one another and are connected to at least one feed element. Swivel module according to one of claims 1 to 5, characterized in that the guide and retaining rings have the same cross-sectional shape as the pile.

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