EP2759641B1 - Work platform, device for creating a foundation element and foundation method - Google Patents

Work platform, device for creating a foundation element and foundation method Download PDF

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Publication number
EP2759641B1
EP2759641B1 EP13000357.7A EP13000357A EP2759641B1 EP 2759641 B1 EP2759641 B1 EP 2759641B1 EP 13000357 A EP13000357 A EP 13000357A EP 2759641 B1 EP2759641 B1 EP 2759641B1
Authority
EP
European Patent Office
Prior art keywords
ground
anchoring element
anchoring
guide frame
removal device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13000357.7A
Other languages
German (de)
French (fr)
Other versions
EP2759641A1 (en
Inventor
Christian Herrmann
Leonhard Weixler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bauer Maschinen GmbH
Original Assignee
Bauer Maschinen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to EP13000357.7A priority Critical patent/EP2759641B1/en
Priority to KR1020140007786A priority patent/KR101656727B1/en
Publication of EP2759641A1 publication Critical patent/EP2759641A1/en
Application granted granted Critical
Publication of EP2759641B1 publication Critical patent/EP2759641B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/20—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels
    • E02F3/205—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels with a pair of digging wheels, e.g. slotting machines
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9212—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel
    • E02F3/9225—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel with rotating cutting elements
    • E02F3/9237—Suction wheels with axis of rotation in transverse direction of the longitudinal axis of the suction pipe
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9293—Component parts of suction heads, e.g. edges, strainers for preventing the entry of stones or the like
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/006—Dredgers or soil-shifting machines for special purposes adapted for working ground under water not otherwise provided for
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0091—Offshore structures for wind turbines

Definitions

  • the invention relates to a working platform for guiding a removal device, with which a foundation element in the ground, in particular in a body of water, can be created by removing soil material, according to the preamble of claim 1.
  • the invention further relates to a device for creating a foundation element in the ground and a establishment procedure.
  • a known working platform for guiding a removal device comprises a guide frame which can be placed on a floor surface for linearly guiding the removal device and at least one anchoring element which can be lowered into the floor for anchoring the guide frame to the floor.
  • An underwater ablation device in which a milling cutter is adjusted by means of cables which are attached to a plurality of anchoring elements in the bottom of the water.
  • foundation elements in the ground serves, for example, the anchoring of structures, such as offshore wind turbines, flow turbines of tidal power plants or oil and gas conveyors, at the bottom of a body of water.
  • a hole or slot is made in the ground and filled with a load-bearing element, for example a hardenable mass.
  • the working platform is lowered by a rope arrangement on the bottom of the water, leveled out and anchored to the body of water.
  • a guided on the platform Drilling device By means of a guided on the platform Drilling device, a borehole is created in the river bottom, which is filled with a hardenable mass.
  • the invention has for its object to provide a working platform, a device for creating a foundation element and a foundation process, which allow a precise creation of a foundation element, especially for large buildings.
  • the platform is inventively characterized in that the anchoring element is rotatably anchored in the ground, that the guide frame is pivotally mounted about the anchoring element and that a pivot drive is provided, with which the guide frame is pivotable about the anchoring element anchored in the ground.
  • the device for creating a foundation element in the ground comprises a working platform according to the invention and a removal device guided linearly on the working platform for removing soil material.
  • a guide frame is placed on the ground and anchored by lowering an anchoring element in the ground at the bottom.
  • a mounted on the guide frame removal device is created by removing soil material, a first slot in the ground.
  • the removal device is then withdrawn from the first slot, and the guide frame is pivoted about the anchoring element, in particular by rotationally driving the anchoring element lowered into the ground.
  • a second slot offset from the first slot is created in the ground by removing soil material.
  • the anchoring element for anchoring the platform rotatably, so non-rotatable to anchor in the ground. If the anchoring element is received in a corresponding recess in the ground, this is thus not rotatable within the recess. This makes it possible to anchor the guide frame optionally with only a single anchoring element rotatably on the ground.
  • the anchoring element may have a length of, for example, up to 3 meters or up to 5 meters, so that a secure anchoring of the guide frame is ensured at the bottom.
  • the length of the anchoring element is usually, in particular considerably, smaller than the length of the foundation element to be created in the ground.
  • anchoring elements for example two or four anchoring elements, can be provided.
  • a second basic idea of the invention is to pivotally support the guide frame about the anchoring element anchored in the ground in order to displace the guide frame along the ground surface by pivoting about the anchoring element.
  • the anchoring element anchored in the ground thus comprises a pivot axis about which the guide frame is rotatably or pivotally mounted.
  • a pivot drive For pivoting the guide frame to the rotatably anchored in the ground anchoring element, a pivot drive is provided according to the invention.
  • the pivot drive which can also be referred to as a rotary drive, causes a movement of the guide frame along a ring or circular path around the passing through the anchoring element, preferably vertical pivot axis when actuated.
  • the non-rotatable anchoring of the anchoring element in the ground can be generated by any means in principle.
  • the anchoring element may be frictionally connected to the surrounding floor, so that upon actuation of the pivot drive no rotational movement of the anchoring element takes place in the ground.
  • a particularly reliable, non-rotatable anchoring is achieved by the rotationally fixed anchoring is achieved by positive locking.
  • the anchoring element is for this purpose positively received in a correspondingly shaped hole or slot in the ground, so that a rotational movement of the anchoring element in the hole or slot is prevented by a positive connection with the surrounding soil.
  • the anchoring element preferably has a cross section, by means of which the anchoring element is rotatably anchored in the ground.
  • the anchoring element has a non-circular cross-section.
  • the anchoring element has a polygonal cross section.
  • An angular cross-section according to the invention is understood to mean a cross-section deviating from a circular shape with at least one corner. The corner can be rounded.
  • the square cross-section makes it possible to anchor the anchoring element in a form-fitting manner in the floor, in particular a corresponding angular slot.
  • the side surfaces of the preferably parallelepiped-shaped anchoring element form support surfaces with which the anchoring element is supported by the anchoring element on the surrounding ground during rotation of the guide frame. A co-rotation of the anchoring element is prevented by positive locking.
  • the anchoring element has a rectangular cross section and / or a cuboid shape.
  • an annular and / or circular coupling element is arranged in a preferred embodiment of the anchoring element, which is rotatably driven for pivoting the guide frame to the anchoring element by the pivot drive.
  • the pivot drive is fixedly arranged on the guide frame and rotates upon pivoting of the guide frame to the anchoring element and / or to the coupling element.
  • the pivoting drive preferably comprises a drive element engaging with the coupling element, for example a drive pinion which can be driven in rotation.
  • a receptacle for receiving and / or linear guiding of the anchoring element is provided.
  • the receptacle for receiving the anchoring element is preferably rotatably mounted relative to the guide frame.
  • the anchoring element is preferably rotatably guided on or in the receptacle.
  • the receptacle When pivoting the guide frame to the anchoring element, the receptacle preferably remains fixed or non-rotating on the ground.
  • the receptacle may be, for example, a guide frame or guide housing surrounding the anchoring element.
  • a guide device for linear guiding of the anchoring element can be provided, preferably on the receptacle for the anchoring element, a guide device, in particular a linear guide.
  • a drive device For lowering the preferably square and / or cuboid anchoring element in the ground, a drive device, preferably a linear drive, is provided.
  • the linear drive is set up to lower the anchoring element, preferably by an exclusively linear movement, in particular vertically, into the ground.
  • the anchoring element is inserted into an already created slot having a cross section corresponding to the anchoring element.
  • the linear drive may comprise, for example, a control cylinder, which is articulated on the one hand on the anchoring element and on the other hand on the receptacle for the anchoring element.
  • the actuating cylinder can be arranged at least partially in the interior of the anchoring element.
  • a drive is provided, by means of which the guide frame can be moved linearly with respect to the anchoring element along the bottom surface. With the drive, the distance between the anchoring element and the removal device can be adjusted. By horizontally displacing the removal device relative to the anchoring element, different radii of the pivoting path, along which the guide frame can be pivoted about the axis of rotation, can be set.
  • an insertion bevel For easier insertion of the anchoring element in a preferably already vorer Unen slot in the bottom, the anchoring element at its lower end in a preferred embodiment, an insertion bevel.
  • the insertion bevel preferably comprises an inclined surface both with respect to the vertical and with respect to the horizontal.
  • a cuboid anchoring element can be chamfered or chamfered at its lower end.
  • the removal device preferably has at least one cutting wheel rotatable about a horizontal axis of rotation and / or a gripper.
  • the removal device is preferably a slot wall device, in particular a trench wall cutter or a slot wall gripper.
  • the removal device has a suspension device in order to suspend the removal device on a carrier device.
  • the suspension can be done for example by means of a flexible element, such as a rope.
  • the removal device can be raised and / or lowered by means of a lifting device provided on the carrier device, for example a cable winch.
  • a fixing device is provided for fixing the working platform to the removal device.
  • the fixing device makes it possible to fix the working platform on the removal device and so lift and / or lower by means of the removal device.
  • clamping devices and / or positive locking elements can be provided on the working platform and / or the removal device.
  • the slot elements created by means of the removal device are preferably filled with a hardenable mass, for example concrete.
  • the curable composition is preferably introduced into the slot via a feed opening on the removal device.
  • prefabricated elements for example steel beams or prefabricated concrete elements, can be introduced into the slot.
  • the work platform according to the invention is particularly suitable for the preparation of along an annular path arranged annular slots, which can form an annular or ring-shaped overall slot.
  • annular or ring-shaped overall slot To create an annular or ring-shaped overall slot, the working platform is rotated several times around anchored in the ground anchoring element. After each rotation, a slot is created which forms part of the overall slot.
  • the annular or annular segment-shaped overall slot is thus created by repeatedly pivoting the guide frame around the anchoring element and repeatedly creating individual slot elements. The individual, separately created slots may overlap to form the overall slot.
  • the guide frame is relieved for pivoting about the anchoring element and / or lifted off the ground. This can advantageously be done by lifting the fixed to the guide frame removal device.
  • the lifting and / or unloading of the guide frame allows a smaller dimensioning of the pivot drive.
  • the lifting of the removal device preferably takes place via a flexible tension element, in particular a rope tensioned between the carrier device and the removal device.
  • an anchoring or guide slot is created in the ground, in which the anchoring element is lowered linearly.
  • the anchoring element itself does not need to be equipped with Abtrags instituten.
  • the retraction of the anchoring element in the anchoring slot is preferably carried out by an exclusively linear movement of the anchoring element.
  • the creation of the anchoring slot takes place in an advantageous embodiment by means of the mounted on the guide frame removal device.
  • the work platform is preferably positioned on the ground surface so that the ablation device mounted on the work platform is located above the anchoring slot to be created. If necessary, the platform can be provisionally anchored to the ground.
  • an anchoring slot is created with a first depth.
  • the working platform is lifted, in particular by means of the removal device, and positioned so that the anchoring element is located above the created anchoring slot.
  • the anchoring element is retracted into the created anchoring slot.
  • a first slot having a second depth which is greater than the depth of the anchoring slot, is created.
  • several anchoring slots can be created, in each of which an anchoring element is lowered.
  • a first embodiment of a device 10 according to the invention is in the FIGS. 1 to 3 shown.
  • the device 10 comprises a removal device 20, which in the illustrated embodiment is designed as a milling device or trench wall cutter.
  • the removal device 20 has a frame 22, at the lower end of which a plurality of cutting wheels 24 are arranged in pairs.
  • the cutting wheels 24 are rotatable about a horizontal axis of rotation.
  • the cross-section of the frame 22 corresponds approximately to the milling cross-section of the cutting wheels 24.
  • a feeder 26 is provided in the field of cutting wheels 24.
  • the removal device 20 is suspended via one or more cables 30 on a carrier device 12 ( Fig. 4 ). For attaching the ropes 30, a suspension device or cable suspension 28 is provided.
  • the removal device 20 is guided linearly along a working platform 40 in the vertical direction.
  • the frame 22 of the removal device 20 has corresponding guide surfaces 23, which are supported on a linear guide 46 of the working platform 40.
  • a fixing device 36 may be provided to fix the removal device 20 to the working platform 40.
  • the working platform 40 comprises a pivoting and / or guiding frame 42, which has a receptacle 44 for the removal device 20 in a central area.
  • the guide frame 42 includes a ground contact surface 47 and a plurality of struts 48.
  • An anchoring device 60 is provided for anchoring the guide frame 22 placed on the floor.
  • the anchoring device 60 comprises a anchoring element 62 which can be lowered by means of a linear drive 64 into the ground, in particular a slot created in the ground.
  • the anchoring element 62 for example a concrete or steel block, has a rectangular cross section and is adapted to be inserted into a milling slot with a corresponding cross section , For easier insertion of the anchoring element 62 in a bottom slot, an insertion bevel 63 is provided at a lower end.
  • the linear drive 64 comprises an actuating cylinder 66, which is articulated on the one hand to a receptacle 68 and on the other hand to the anchoring element 62.
  • the adjusting cylinder 66 extends at least partially within the anchoring element 62.
  • a pivot drive 50 is provided.
  • the pivot drive 50 is fixedly arranged on the guide frame 42 and comprises a rotationally driven drive element 52, which is engaged with a rotatably connected to the anchoring element 62 coupling element 70 in engagement.
  • the pivot drive 50 moves together with the guide frame 42 about the anchoring element 62 anchored in the base in a rotationally fixed manner or about the coupling element 70.
  • the anchoring element 62 is received in the receptacle 68, which may be formed by a housing or a frame.
  • the receptacle 68 is arranged rotationally fixed relative to the anchoring element 62 and rotatably supported relative to the guide frame 42.
  • the pivot drive 50 is configured to rotate the receptacle 68 with the anchoring element 62 arranged thereon.
  • the device 10 with work platform 40 and ablation device 20 arranged thereon is suspended on a carrier device 12, Fig. 4 ,
  • the carrier device 12 may be arranged, for example, on a platform 11 above a water level 4.
  • the platform 11 may be anchored to the ground as seen Fig. 5 seen.
  • the carrier device 12 comprises a boom or mast 14 pivotally mounted on a base 13, on which the Device 10 is suspended.
  • the device 10 is suspended on one or more ropes 30 which, starting from the removal device 20, are guided to a cable winch 16 arranged on the carrier device 12.
  • the cable 30 is guided over a pulley 18 arranged on the mast 14.
  • the removal device 20 By unwinding the cable 30 from the winch 16, the removal device 20 is lowered together with the working platform 40 on the bottom of the water or the bottom surface 82, Fig. 5 ,
  • the working platform 40 is in this case initially fixed to the removal device 20, for example by a clamping device or a locking device.
  • anchoring slot or guide slot 84 After the working platform 40 is leveled out and optionally anchored by means of suitable anchors temporarily on the ground 80, by means of the removal device - by rotating driving the cutting wheels 24 and lowering the removal device 20 into the ground 80 - created a first Frässchlitz, which referred to as anchoring slot or guide slot 84 becomes.
  • the anchoring slot 84 has a length of preferably about 1 to 5 meters. The creation of the anchoring slot 84 is in Fig. 6 shown.
  • the excavator 20 is withdrawn from the floor 80 and preferably reconnected to the work platform 40.
  • the working platform 40 is lifted together with the removal device 20.
  • the laterally attached to the guide frame 42 anchoring device 60 which can also be referred to as a guide and centering device, placed over the created anchoring slot 84 in position.
  • the guide frame 42 is thus offset along the bottom surface 82 so that the anchoring element 62 is disposed directly above the created anchoring slot 84 and aligned with the anchoring slot 84.
  • the guide frame 42 is set down again on the water bottom 82 and the lateral anchoring element 62 retracted into the created slot, Fig. 7 ,
  • a first lateral milling slot 92a is produced for creating the, for example, annular foundation, Fig. 8 .
  • the final depth of the slot 92 is indicated in the figures by the reference numeral 86 marked.
  • the cutting wheels 24 are driven in rotation.
  • the depth 86 of the slot 92 a is greater than the depth of the anchoring slot 84.
  • the removal device 20 is withdrawn from the slot 92.
  • the removal device 20 is pivoted together with the guide and swing frame 42 to the remote anchoring device 60 partially.
  • the guide frame 42 is thus rotated by means of the pivot drive 50 along a preferably circular pivot path 78 about the anchoring element 62 arranged in the ground by a defined angle.
  • Various pivotal positions of the guide frame 42 are in Fig. 8 shown.
  • the next Frässchlitz 92 b of the annular foundation foundation can be generated.
  • possibly partially overlapping slots 92 are created by repeated pivoting of the guide frame 42 and repeated lowering of the removal device 20.
  • the Figures 9 and 10 show the creation of individual slots on the basis of a second embodiment of a working platform 40.
  • the in the Figures 9 and 10 shown working platform 40 includes a plurality of anchoring means 60 about which the guide frame 42 is rotatably mounted. Each anchoring device 60 is associated with a separate pivot drive 50 for this purpose.
  • the first anchoring element 60 is retracted, the ablation device 20 again raised by the body of water 82 and so far by means of a boom adjustment of the milling carrier device adjusts the second anchoring device 60 mounted on the opposite side of the guide frame 42 over the central anchoring slot 84 in position comes. Then, the entire milling unit is discontinued at the bottom of the water and the second anchoring element 62 is retracted into the anchoring slot 84.
  • the removal device 20 together with the guide frame 42 is turned so far that the removal device 20 can create the missing milling slots 92 for producing an annular foundation slot.
  • annular slot 90 By providing at least two anchoring means 60, no rotation of the guide frame 42 through 360 ° is required to create an annular slot 90.
  • the guide frame 42 is pivoted about each of the anchoring elements 62 only by less than 360 °.
  • an annular slot can be made by creating a plurality of ring-segment-shaped sub-slots, each made by pivoting the guide frame 42 about its own anchoring element 62.
  • FIGS. 11 to 13 show exemplary embodiments of an inventively produced total slot or foundation element 90.
  • the total slot or the foundation member 90 each includes a plurality of individual slots or individual foundation elements 92a to 92g.
  • the slots or foundation elements 92a to 92g are arranged in a ring around a central anchoring slot 84.
  • FIG. 11 and 12 are the individual slots or foundation elements 92a to 92g about a central axis of rotation 76 which passes through the anchoring slot 84, pivoted to each other.
  • the individual slots or foundation elements 92 may overlap, so that a closed, annular foundation element 90 can be formed.
  • a support tube 100 is inserted into the not yet hardened foundation structure, as in FIG Fig. 12 shown below.
  • Fig. 13 shows an embodiment of an annular overall slot 90, in which the individual slots 92a to 92g are arranged at different distances from the axis of rotation 76. In this way, a substantially oval foundation element 90 results.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Foundations (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Description

Die Erfindung betrifft eine Arbeitsbühne zum Führen einer Abtragsvorrichtung, mit welcher durch Abtragen von Bodenmaterial ein Gründungselement im Boden, insbesondere in einem Gewässergrund, erstellbar ist, gemäß dem Oberbegriff des Anspruchs 1. Die Erfindung betrifft ferner eine Vorrichtung zum Erstellen eines Gründungselements im Boden sowie ein Gründungsverfahren.The invention relates to a working platform for guiding a removal device, with which a foundation element in the ground, in particular in a body of water, can be created by removing soil material, according to the preamble of claim 1. The invention further relates to a device for creating a foundation element in the ground and a establishment procedure.

Eine bekannte Arbeitsbühne zum Führen einer Abtragsvorrichtung umfasst einen auf eine Bodenoberfläche aufsetzbaren Führungsrahmen zum linearen Führen der Abtragsvorrichtung und mindestens ein in den Boden absenkbares Verankerungselement zum Verankern des Führungsrahmens am Boden.A known working platform for guiding a removal device comprises a guide frame which can be placed on a floor surface for linearly guiding the removal device and at least one anchoring element which can be lowered into the floor for anchoring the guide frame to the floor.

Aus der WO 2012/021813 A1 ist eine Unterwasser-Abtragsvorrichtung bekannt, bei welcher eine Fräse mittels Seilen verstellt wird, welche an mehreren Verankerungselementen im Gewässergrund angebracht sind.From the WO 2012/021813 A1 An underwater ablation device is known in which a milling cutter is adjusted by means of cables which are attached to a plurality of anchoring elements in the bottom of the water.

Aus der DE 20 2010 007757 U1 geht ein Unterwasser-Fundamentbagger hervor, der in einem Schalungsring verstellbar gelagert ist.From the DE 20 2010 007757 U1 is an underwater foundation excavator out, which is mounted adjustable in a formwork ring.

Die Herstellung von Gründungselementen im Boden dient beispielsweise der Verankerung von Bauwerken, wie beispielsweise Offshore-Windanlagen, Strömungsturbinen von Gezeitenkraftwerken oder Öl- und Gasfördereinrichtungen, am Grund eines Gewässers.The production of foundation elements in the ground serves, for example, the anchoring of structures, such as offshore wind turbines, flow turbines of tidal power plants or oil and gas conveyors, at the bottom of a body of water.

Zur Herstellung eines Gründungselementes wird ein Loch oder Schlitz im Boden erstellt und mit einem tragfähigen Element, beispielsweise einer aushärtbaren Masse, verfüllt.To produce a foundation element, a hole or slot is made in the ground and filled with a load-bearing element, for example a hardenable mass.

Bei einem bekannten Verfahren zum Erstellen eines Gründungselements wird die Arbeitsbühne über eine Seilanordnung auf den Gewässergrund abgesenkt, ausnivelliert und am Gewässergrund verankert. Mittels einer an der Arbeitsbühne geführten Bohrvorrichtung wird ein Bohrloch im Gewässergrund erstellt, welches mit einer aushärtbaren Masse verfüllt wird.In a known method for creating a foundation element, the working platform is lowered by a rope arrangement on the bottom of the water, leveled out and anchored to the body of water. By means of a guided on the platform Drilling device, a borehole is created in the river bottom, which is filled with a hardenable mass.

Der Erfindung liegt die Aufgabe zugrunde, eine Arbeitsbühne, eine Vorrichtung zum Erstellen eines Gründungselements und ein Gründungsverfahren anzugeben, welche eine präzise Erstellung eines Gründungselements, insbesondere für große Bauwerke, ermöglichen.The invention has for its object to provide a working platform, a device for creating a foundation element and a foundation process, which allow a precise creation of a foundation element, especially for large buildings.

Die Aufgabe wird erfindungsgemäß durch eine Arbeitsbühne mit den Merkmalen des Anspruchs 1, eine Vorrichtung zum Erstellen eines Gründungselements mit den Merkmalen des Anspruchs 7 sowie ein Gründungsverfahren mit den Merkmalen des Anspruchs 11 gelöst. Bevorzugte Ausgestaltungen der Erfindung sind in den abhängigen Ansprüchen angegeben.The object is achieved by a working platform with the features of claim 1, a device for creating a foundation element with the features of claim 7 and a foundation process with the features of claim 11. Preferred embodiments of the invention are specified in the dependent claims.

Die Arbeitsbühne ist erfindungsgemäß dadurch gekennzeichnet, dass das Verankerungselement drehfest im Boden verankerbar ist, dass der Führungsrahmen um das Verankerungselement schwenkbar gelagert ist und dass ein Schwenkantrieb vorgesehen ist, mit welchem der Führungsrahmen um das im Boden verankerte Verankerungselement schwenkbar ist.The platform is inventively characterized in that the anchoring element is rotatably anchored in the ground, that the guide frame is pivotally mounted about the anchoring element and that a pivot drive is provided, with which the guide frame is pivotable about the anchoring element anchored in the ground.

Die Vorrichtung zum Erstellen eines Gründungselements im Boden umfasst eine erfindungsgemäße Arbeitsbühne und eine an der Arbeitsbühne linear geführte Abtragsvorrichtung zum Abtragen von Bodenmaterial.The device for creating a foundation element in the ground comprises a working platform according to the invention and a removal device guided linearly on the working platform for removing soil material.

Bei dem erfindungsgemäßen Gründungsverfahren, welches insbesondere mittels einer erfindungsgemäßen Vorrichtung zum Erstellen eines Gründungselements im Boden ausführbar ist, wird ein Führungsrahmen auf den Boden aufgesetzt und durch Absenken eines Verankerungselements in den Boden am Boden verankert. Mittels einer an dem Führungsrahmen gelagerten Abtragsvorrichtung wird durch Abtragen von Bodenmaterial ein erster Schlitz im Boden erstellt. Die Abtragsvorrichtung wird danach aus dem ersten Schlitz rückgezogen, und der Führungsrahmen wird, insbesondere durch drehendes Antreiben des in den Boden abgesenkten Verankerungselements, um das Verankerungselement geschwenkt. Mittels der Abtragsvorrichtung wird durch Abtragen von Bodenmaterial ein zweiter, gegenüber dem ersten Schlitz versetzter Schlitz im Boden erstellt.In the foundation process according to the invention, which can be carried out in particular by means of a device according to the invention for creating a foundation element in the ground, a guide frame is placed on the ground and anchored by lowering an anchoring element in the ground at the bottom. By means of a mounted on the guide frame removal device is created by removing soil material, a first slot in the ground. The removal device is then withdrawn from the first slot, and the guide frame is pivoted about the anchoring element, in particular by rotationally driving the anchoring element lowered into the ground. By means of the removal device, a second slot offset from the first slot is created in the ground by removing soil material.

Ein erster Grundgedanke der Erfindung kann darin gesehen werden, das Verankerungselement zum Verankern der Arbeitsbühne drehfest, also nicht-drehbar, im Boden zu verankern. Wenn das Verankerungselement in einer entsprechenden Ausnehmung im Boden aufgenommen ist, ist dieses also innerhalb der Ausnehmung nicht drehbar. Dies ermöglicht es, den Führungsrahmen gegebenenfalls mit nur einem einzigen Verankerungselement drehfest am Boden zu verankern.A first basic idea of the invention can be seen therein, the anchoring element for anchoring the platform rotatably, so non-rotatable to anchor in the ground. If the anchoring element is received in a corresponding recess in the ground, this is thus not rotatable within the recess. This makes it possible to anchor the guide frame optionally with only a single anchoring element rotatably on the ground.

Das Verankerungselement kann eine Länge von beispielsweise bis zu 3 Metern oder bis zu 5 Metern aufweisen, so dass eine sichere Verankerung des Führungsrahmens am Boden gewährleistet ist. Die Länge des Verankerungselements ist üblicherweise, insbesondere erheblich, geringer als die Länge des zu erstellenden Gründungselementes im Boden.The anchoring element may have a length of, for example, up to 3 meters or up to 5 meters, so that a secure anchoring of the guide frame is ensured at the bottom. The length of the anchoring element is usually, in particular considerably, smaller than the length of the foundation element to be created in the ground.

Für eine besonders zuverlässige Verankerung können auch mehrere Verankerungselemente, beispielsweise zwei oder vier Verankerungselemente, vorgesehen sein.For a particularly reliable anchoring, several anchoring elements, for example two or four anchoring elements, can be provided.

Ein zweiter Grundgedanke der Erfindung besteht darin, den Führungsrahmen um das im Boden verankerte Verankerungselement schwenkbar zu lagern, um den Führungsrahmen durch Schwenken um das Verankerungselement entlang der Bodenoberfläche zu versetzen. Das im Boden verankerte Verankerungselement umfasst also eine Schwenkachse, um welche der Führungsrahmen drehbar oder schwenkbar gelagert ist.A second basic idea of the invention is to pivotally support the guide frame about the anchoring element anchored in the ground in order to displace the guide frame along the ground surface by pivoting about the anchoring element. The anchoring element anchored in the ground thus comprises a pivot axis about which the guide frame is rotatably or pivotally mounted.

Zum Verschwenken des Führungsrahmens um das im Boden drehfest verankerte Verankerungselement ist erfindungsgemäß ein Schwenkantrieb vorgesehen. Der Schwenkantrieb, welcher auch als Drehantrieb bezeichnet werden kann, bewirkt bei Betätigung eine Bewegung des Führungsrahmens entlang einer Ring- oder Kreisbahn um die durch das Verankerungselement verlaufende, vorzugsweise vertikale Schwenkachse.For pivoting the guide frame to the rotatably anchored in the ground anchoring element, a pivot drive is provided according to the invention. The pivot drive, which can also be referred to as a rotary drive, causes a movement of the guide frame along a ring or circular path around the passing through the anchoring element, preferably vertical pivot axis when actuated.

Die drehfeste Verankerung des Verankerungselements im Boden kann grundsätzlich durch beliebige Mittel erzeugt werden. Beispielsweise kann das Verankerungselement reibschlüssig mit dem umgebenden Boden verbunden sein, so dass bei Betätigung des Schwenkantriebs keine Drehbewegung des Verankerungselements im Boden erfolgt.The non-rotatable anchoring of the anchoring element in the ground can be generated by any means in principle. For example, the anchoring element may be frictionally connected to the surrounding floor, so that upon actuation of the pivot drive no rotational movement of the anchoring element takes place in the ground.

Eine besonders zuverlässige, drehfeste Verankerung wird jedoch dadurch erreicht, dass die drehfeste Verankerung durch Formschluss erzielt wird. Das Verankerungselement ist hierzu formschlüssig in einem entsprechend geformten Loch oder Schlitz im Boden aufgenommen, so dass eine Drehbewegung des Verankerungselements in dem Loch oder Schlitz durch einen Formschluss mit dem umgebenden Boden verhindert wird.However, a particularly reliable, non-rotatable anchoring is achieved by the rotationally fixed anchoring is achieved by positive locking. The anchoring element is for this purpose positively received in a correspondingly shaped hole or slot in the ground, so that a rotational movement of the anchoring element in the hole or slot is prevented by a positive connection with the surrounding soil.

Das Verankerungselement weist vorzugsweise einen Querschnitt auf, mittels welchem das Verankerungselement drehfest im Boden verankerbar ist. Vorzugsweise weist das Verankerungselement einen nicht-kreisförmigen Querschnitt auf.The anchoring element preferably has a cross section, by means of which the anchoring element is rotatably anchored in the ground. Preferably, the anchoring element has a non-circular cross-section.

In einer besonders bevorzugten Ausführungsform weist das Verankerungselement einen eckigen Querschnitt auf. Unter einem eckigen Querschnitt wird erfindungsgemäß ein von einer Kreisform abweichender Querschnitt mit zumindest einer Ecke verstanden. Die Ecke kann abgerundet sein.In a particularly preferred embodiment, the anchoring element has a polygonal cross section. An angular cross-section according to the invention is understood to mean a cross-section deviating from a circular shape with at least one corner. The corner can be rounded.

Der eckige Querschnitt ermöglicht es, das Verankerungselement formschlüssig im Boden, insbesondere einem entsprechenden eckigen Schlitz, zu verankern. Die Seitenflächen des vorzugsweise quaderförmigen Verankerungselements bilden Abstützflächen, mit welchen sich das Verankerungselement bei einer Drehung des Führungsrahmens um das Verankerungselement am umgebenden Boden abstützt. Ein Mitdrehen des Verankerungselements wird durch Formschluss verhindert.The square cross-section makes it possible to anchor the anchoring element in a form-fitting manner in the floor, in particular a corresponding angular slot. The side surfaces of the preferably parallelepiped-shaped anchoring element form support surfaces with which the anchoring element is supported by the anchoring element on the surrounding ground during rotation of the guide frame. A co-rotation of the anchoring element is prevented by positive locking.

In einer bevorzugten Ausführungsform weist das Verankerungselement einen rechteckigen Querschnitt und/oder eine Quaderform auf.In a preferred embodiment, the anchoring element has a rectangular cross section and / or a cuboid shape.

Zum Schwenken des Führungsrahmens um das vorzugsweise eckige und/oder quaderförmige Verankerungselement ist in einer bevorzugten Ausführungsform an dem Verankerungselement ein ringförmiges und/oder kreisförmiges Koppelelement angeordnet, welches zum Schwenken des Führungsrahmens um das Verankerungselement durch den Schwenkantrieb drehend antreibbar ist. Vorzugsweise ist der Schwenkantrieb fest an dem Führungsrahmen angeordnet und dreht sich beim Verschwenken des Führungsrahmens um das Verankerungselement und/oder um das Koppelelement. Der Schwenkantrieb umfasst vorzugsweise ein mit dem Koppelelement in Eingriff stehendes Antriebselement, beispielsweise ein drehend antreibbares Antriebsritzel.For pivoting the guide frame to the preferably angular and / or rectangular anchoring element, an annular and / or circular coupling element is arranged in a preferred embodiment of the anchoring element, which is rotatably driven for pivoting the guide frame to the anchoring element by the pivot drive. Preferably, the pivot drive is fixedly arranged on the guide frame and rotates upon pivoting of the guide frame to the anchoring element and / or to the coupling element. The pivoting drive preferably comprises a drive element engaging with the coupling element, for example a drive pinion which can be driven in rotation.

Vorzugsweise ist eine Aufnahme zum Aufnehmen und/oder linearen Führen des Verankerungselements vorgesehen. Die Aufnahme zum Aufnehmen des Verankerungselements ist vorzugsweise relativ zum Führungsrahmen drehbar gelagert. Das Verankerungselement ist vorzugsweise drehfest an oder in der Aufnahme geführt. Beim Verschwenken des Führungsrahmens um das Verankerungselement bleibt die Aufnahme vorzugsweise feststehend beziehungsweise nicht-rotierend am Boden. Die Aufnahme kann beispielsweise ein das Verankerungselement umgebendes Führungsgestell oder Führungsgehäuse sein.Preferably, a receptacle for receiving and / or linear guiding of the anchoring element is provided. The receptacle for receiving the anchoring element is preferably rotatably mounted relative to the guide frame. The anchoring element is preferably rotatably guided on or in the receptacle. When pivoting the guide frame to the anchoring element, the receptacle preferably remains fixed or non-rotating on the ground. The receptacle may be, for example, a guide frame or guide housing surrounding the anchoring element.

Zum linearen Führen des Verankerungselements kann, vorzugsweise an der Aufnahme für das Verankerungselement, eine Führungseinrichtung, insbesondere eine Linearführung vorgesehen sein.For linear guiding of the anchoring element can be provided, preferably on the receptacle for the anchoring element, a guide device, in particular a linear guide.

Zum Absenken des vorzugsweise eckigen und/oder quaderförmigen Verankerungselements in den Boden ist eine Antriebseinrichtung, vorzugsweise ein Linearantrieb, vorgesehen. Der Linearantrieb ist eingerichtet, das Verankerungselement, vorzugsweise durch eine ausschließlich lineare Bewegung, insbesondere vertikal, in den Boden abzusenken. Vorzugsweise wird das Verankerungselement in einen bereits erstellten Schlitz mit einem dem Verankerungselement entsprechenden Querschnitt eingeführt. Der Linearantrieb kann beispielsweise einen Stellzylinder umfassen, welcher einerseits am Verankerungselement und andererseits an der Aufnahme für das Verankerungselement angelenkt ist. Der Stellzylinder kann zumindest teilweise im Inneren des Verankerungselements angeordnet sein.For lowering the preferably square and / or cuboid anchoring element in the ground, a drive device, preferably a linear drive, is provided. The linear drive is set up to lower the anchoring element, preferably by an exclusively linear movement, in particular vertically, into the ground. Preferably, the anchoring element is inserted into an already created slot having a cross section corresponding to the anchoring element. The linear drive may comprise, for example, a control cylinder, which is articulated on the one hand on the anchoring element and on the other hand on the receptacle for the anchoring element. The actuating cylinder can be arranged at least partially in the interior of the anchoring element.

In einer bevorzugten Ausführungsform ist ein Antrieb vorgesehen, mittels welchem der Führungsrahmen gegenüber dem Verankerungselement entlang der Bodenoberfläche linear verfahren werden kann. Mit dem Antrieb lässt sich der Abstand zwischen dem Verankerungselement und der Abtragsvorrichtung einstellen. Durch horizontales Verschieben der Abtragsvorrichtung gegenüber dem Verankerungselement können unterschiedliche Radien der Schwenkbahn, entlang welcher der Führungsrahmen um die Drehachse verschwenkbar ist, eingestellt werden.In a preferred embodiment, a drive is provided, by means of which the guide frame can be moved linearly with respect to the anchoring element along the bottom surface. With the drive, the distance between the anchoring element and the removal device can be adjusted. By horizontally displacing the removal device relative to the anchoring element, different radii of the pivoting path, along which the guide frame can be pivoted about the axis of rotation, can be set.

Zum leichteren Einführen des Verankerungselements in einen vorzugsweise bereits vorerstellten Schlitz im Boden weist das Verankerungselement an seinem unteren Ende in einer bevorzugten Ausführungsform eine Einführschräge auf. Die Einführschräge umfasst vorzugsweise eine sowohl gegenüber der Vertikalen als auch gegenüber der Horizontalen geneigte Fläche. Beispielsweise kann ein quaderförmiges Verankerungselement an seinem unteren Ende angefast oder angeschrägt sein.For easier insertion of the anchoring element in a preferably already vorerstellten slot in the bottom, the anchoring element at its lower end in a preferred embodiment, an insertion bevel. The insertion bevel preferably comprises an inclined surface both with respect to the vertical and with respect to the horizontal. For example, a cuboid anchoring element can be chamfered or chamfered at its lower end.

Die Abtragsvorrichtung weist vorzugsweise mindestens ein um eine horizontale Drehachse drehbares Fräsrad und/oder einen Greifer auf. Vorzugsweise handelt es sich bei der Abtragsvorrichtung um ein Schlitzwandgerät, insbesondere eine Schlitzwandfräse oder einen Schlitzwandgreifer.The removal device preferably has at least one cutting wheel rotatable about a horizontal axis of rotation and / or a gripper. The removal device is preferably a slot wall device, in particular a trench wall cutter or a slot wall gripper.

In einer bevorzugten Ausführungsform weist die Abtragsvorrichtung eine Aufhängeinrichtung auf, um die Abtragsvorrichtung an einem Trägergerät aufzuhängen. Die Aufhängung kann beispielsweise mittels eines flexiblen Elements, beispielsweise eines Seils, erfolgen. Vorzugsweise ist die Abtragsvorrichtung mittels einer am Trägergerät vorgesehenen Hubvorrichtung, beispielsweise einer Seilwinde, anhebbar und/oder absenkbar.In a preferred embodiment, the removal device has a suspension device in order to suspend the removal device on a carrier device. The suspension can be done for example by means of a flexible element, such as a rope. Preferably, the removal device can be raised and / or lowered by means of a lifting device provided on the carrier device, for example a cable winch.

In einer bevorzugten Ausführungsform ist zum Fixieren der Arbeitsbühne an der Abtragsvorrichtung eine Fixierungseinrichtung vorgesehen. Die Fixierungseinrichtung ermöglicht es, die Arbeitsbühne an der Abtragsvorrichtung festzulegen und so mittels der Abtragsvorrichtung anzuheben und/oder abzusenken. Zum Fixieren der Arbeitsbühne an der Abtragsvorrichtung können beispielsweise Klemmeinrichtungen und/oder Formschlusselemente an der Arbeitsbühne und/oder der Abtragsvorrichtung vorgesehen sein.In a preferred embodiment, a fixing device is provided for fixing the working platform to the removal device. The fixing device makes it possible to fix the working platform on the removal device and so lift and / or lower by means of the removal device. For fixing the working platform to the removal device, for example, clamping devices and / or positive locking elements can be provided on the working platform and / or the removal device.

Zum Bilden eines Gründungselements im Boden werden die mittels der Abtragsvorrichtung erstellten Schlitzelemente vorzugsweisemit einer aushärtbaren Masse, beispielsweise Beton, verfüllt. Die aushärtbare Masse wird vorzugsweise über eine Zuführöffnung an der Abtragsvorrichtung in den Schlitz eingeleitet. Zusätzlich und/oder alternativ können auch vorgefertigte Elemente, beispielsweise Stahlträger oder vorgefertigte Betonelemente, in den Schlitz eingebracht werden.To form a foundation element in the ground, the slot elements created by means of the removal device are preferably filled with a hardenable mass, for example concrete. The curable composition is preferably introduced into the slot via a feed opening on the removal device. Additionally and / or alternatively, prefabricated elements, for example steel beams or prefabricated concrete elements, can be introduced into the slot.

Die erfindungsgemäße Arbeitsbühne eignet sich insbesondere zur Erstellung von entlang einer Ringbahn angeordneten, ringförmigen Schlitzen, welche einen ringförmigen oder ringsegmentförmigen Gesamtschlitz bilden können. Zur Erstellung eines ringförmigen oder ringsegmentförmigen Gesamtschlitzes wird die Arbeitsbühne mehrfach um das in dem Boden verankerte Verankerungselement gedreht. Nach jeder Drehung wird ein Schlitz erstellt, welcher einen Teil des Gesamtschlitzes bildet. Der ringförmige oder ringsegmentförmige Gesamtschlitz wird also durch ein wiederholtes Schwenken des Führungsrahmens um das Verankerungselement und ein wiederholtes Erstellen einzelner Schlitzelemente erstellt. Die einzelnen, separat erstellten Schlitze können sich zum Bilden des Gesamtschlitzes überlappen.The work platform according to the invention is particularly suitable for the preparation of along an annular path arranged annular slots, which can form an annular or ring-shaped overall slot. To create an annular or ring-shaped overall slot, the working platform is rotated several times around anchored in the ground anchoring element. After each rotation, a slot is created which forms part of the overall slot. The annular or annular segment-shaped overall slot is thus created by repeatedly pivoting the guide frame around the anchoring element and repeatedly creating individual slot elements. The individual, separately created slots may overlap to form the overall slot.

Grundsätzlich kann das Verschwenken des Führungsrahmens um das im Boden verankerte Verankerungselement bei auf der Bodenoberfläche aufliegendem Führungsrahmen erfolgen. Hierzu ist es erforderlich, den Schwenkantrieb entsprechend zu dimensionieren.In principle, the pivoting of the guide frame about the anchoring element anchored in the ground can take place when the guide frame rests on the floor surface. For this purpose, it is necessary to dimension the pivot drive accordingly.

In einer bevorzugten Ausführungsvariante wird jedoch der Führungsrahmen zum Verschwenken um das Verankerungselement entlastet und/oder vom Boden abgehoben. Dies kann vorteilhafterweise durch Anheben der an dem Führungsrahmen fixierten Abtragsvorrichtung erfolgen. Das Anheben und/oder Entlasten des Führungsrahmens ermöglicht eine kleinere Dimensionierung des Schwenkantriebs. Vorzugsweise erfolgt das Anheben der Abtragsvorrichtung über ein flexibles Zugelement, insbesondere ein zwischen dem Trägergerät und der Abtragsvorrichtung gespanntes Seil.In a preferred embodiment, however, the guide frame is relieved for pivoting about the anchoring element and / or lifted off the ground. This can advantageously be done by lifting the fixed to the guide frame removal device. The lifting and / or unloading of the guide frame allows a smaller dimensioning of the pivot drive. The lifting of the removal device preferably takes place via a flexible tension element, in particular a rope tensioned between the carrier device and the removal device.

Vorzugsweise wird, insbesondere vor Erstellen des ersten Schlitzes, ein Verankerungs- oder Führungsschlitz im Boden erstellt, in welchen das Verankerungselement linear absenkbar ist. Das Verankerungselement selbst braucht also nicht mit Abtragselementen ausgestattet zu sein. Das Einfahren des Verankerungselements in den Verankerungsschlitz erfolgt vorzugsweise durch eine ausschließlich lineare Bewegung des Verankerungselements.Preferably, in particular before creating the first slot, an anchoring or guide slot is created in the ground, in which the anchoring element is lowered linearly. The anchoring element itself does not need to be equipped with Abtragselementen. The retraction of the anchoring element in the anchoring slot is preferably carried out by an exclusively linear movement of the anchoring element.

Die Erstellung des Verankerungsschlitzes erfolgt in einer vorteilhaften Ausgestaltung mittels der an dem Führungsrahmen gelagerten Abtragsvorrichtung. Hierzu wird die Arbeitsbühne vorzugsweise so an der Bodenoberfläche positioniert, dass sich die an der Arbeitsbühne gelagerte Abtragsvorrichtung oberhalb des zu erstellenden Verankerungsschlitzes befindet. Gegebenenfalls kann die Arbeitsbühne provisorisch am Boden verankert werden. Mit der Abtragsvorrichtung wird ein Verankerungsschlitz mit einer ersten Tiefe erstellt. Nach Erstellung des Verankerungsschlitzes wird die Arbeitsbühne, insbesondere mittels der Abtragsvorrichtung, angehoben und so positioniert, dass sich das Verankerungselement über dem erstellten Verankerungsschlitz befindet. Das Verankerungselement wird in den erstellten Verankerungsschlitz eingefahren. Anschließend wird zum Bilden des Gründungselements ein erster Schlitz mit einer zweiten Tiefe erstellt, welche größer ist als die Tiefe des Verankerungsschlitzes. Zur besseren Verankerung können auch mehrere Verankerungsschlitze erstellt werden, in welche jeweils ein Verankerungselement abgesenkt wird.The creation of the anchoring slot takes place in an advantageous embodiment by means of the mounted on the guide frame removal device. For this purpose, the work platform is preferably positioned on the ground surface so that the ablation device mounted on the work platform is located above the anchoring slot to be created. If necessary, the platform can be provisionally anchored to the ground. With the removal device an anchoring slot is created with a first depth. After creating the anchoring slot the working platform is lifted, in particular by means of the removal device, and positioned so that the anchoring element is located above the created anchoring slot. The anchoring element is retracted into the created anchoring slot. Subsequently, to form the foundation element, a first slot having a second depth, which is greater than the depth of the anchoring slot, is created. For better anchoring also several anchoring slots can be created, in each of which an anchoring element is lowered.

Die Erfindung wird nachfolgend anhand von bevorzugten Ausführungsformen, welche in den beiliegenden, schematischen Figuren dargestellt sind, weiter beschrieben. In den Figuren zeigt:

Fig. 1:
eine Frontansicht einer ersten Ausführungsform einer erfindungsgemäßen Vorrichtung;
Fig. 2:
eine Seitenansicht der Vorrichtung gemäß Fig. 1;
Fig. 3:
eine vereinfachte Ansicht von oben;
Fig. 4:
einen ersten Verfahrensschritt eines erfindungsgemäßen Verfahrens;
Fig. 5:
einen zweiten Verfahrensschritt eines erfindungsgemäßen Verfahrens;
Fig. 6:
einen dritten Schritt eines erfindungsgemäßen Verfahrens;
Fig. 7:
einen vierten Schritt eines erfindungsgemäßen Verfahrens;
Fig. 8:
weitere Schritte eines erfindungsgemäßen Verfahrens;
Fig. 9:
Verfahrensschritte zur Erstellung eines Gründungselements mit einer alternativen Vorrichtung;
Fig. 10:
weitere Verfahrensschritte zur Erstellung eines Gründungselements mit einer Vorrichtung gemäß Fig. 9;
Fig. 11:
mehrere durch ein erfindungsgemäßes Verfahren hergestellte, entlang einer Ringbahn angeordnete Einzelschlitze;
Fig. 12:
eine erste Ausführungsform eines ringförmigen Gesamtschlitzes; und
Fig. 13:
eine zweite Ausführungsform eines ringförmigen Gesamtschlitzes.
The invention will be further described by means of preferred embodiments, which are illustrated in the accompanying schematic figures. In the figures shows:
Fig. 1:
a front view of a first embodiment of a device according to the invention;
Fig. 2:
a side view of the device according to Fig. 1 ;
3:
a simplified view from above;
4:
a first method step of a method according to the invention;
Fig. 5:
a second process step of a method according to the invention;
Fig. 6:
a third step of a method according to the invention;
Fig. 7:
a fourth step of a method according to the invention;
Fig. 8:
further steps of a method according to the invention;
Fig. 9:
Method steps for creating a foundation element with an alternative device;
Fig. 10:
Further method steps for creating a foundation element with a device according to Fig. 9 ;
Fig. 11:
a plurality of individual slots produced by a method according to the invention and arranged along a circular path;
Fig. 12:
a first embodiment of an annular overall slot; and
Fig. 13:
a second embodiment of an annular overall slot.

Gleiche oder gleich wirkende Elemente sind in sämtlichen Figuren mit denselben Bezugszeichen gekennzeichnet.Identical or equivalent elements are indicated in all figures with the same reference numerals.

Eine erste Ausführungsform einer erfindungsgemäßen Vorrichtung 10 ist in den Figuren 1 bis 3 dargestellt. Die Vorrichtung 10 umfasst eine Abtragsvorrichtung 20, welche in der dargestellten Ausführungsform als Fräsvorrichtung beziehungsweise Schlitzwandfräse ausgeführt ist. Die Abtragsvorrichtung 20 weist einen Rahmen 22 auf, an dessen unterem Ende mehrere Fräsräder 24 paarweise angeordnet sind. Die Fräsräder 24 sind um eine horizontale Drehachse drehbar. Der Querschnitt des Rahmens 22 entspricht etwa dem Fräsquerschnitt der Fräsräder 24. Zum Zuführen einer Suspension in den erstellten Frässchlitz ist im Bereich der Fräsräder 24 eine Zuführeinrichtung 26 vorgesehen. Die Abtragsvorrichtung 20 ist über ein oder mehrere Seile 30 an einem Trägergerät 12 aufgehängt (Fig. 4). Zum Befestigen der Seile 30 ist eine Aufhängeeinrichtung oder Seilaufhängung 28 vorgesehen.A first embodiment of a device 10 according to the invention is in the FIGS. 1 to 3 shown. The device 10 comprises a removal device 20, which in the illustrated embodiment is designed as a milling device or trench wall cutter. The removal device 20 has a frame 22, at the lower end of which a plurality of cutting wheels 24 are arranged in pairs. The cutting wheels 24 are rotatable about a horizontal axis of rotation. The cross-section of the frame 22 corresponds approximately to the milling cross-section of the cutting wheels 24. To supply a suspension in the created Frässchlitz a feeder 26 is provided in the field of cutting wheels 24. The removal device 20 is suspended via one or more cables 30 on a carrier device 12 ( Fig. 4 ). For attaching the ropes 30, a suspension device or cable suspension 28 is provided.

Die Abtragsvorrichtung 20 ist entlang einer Arbeitsbühne 40 in vertikaler Richtung linear geführt. Der Rahmen 22 der Abtragsvorrichtung 20 weist hierzu entsprechende Führungsflächen 23 auf, die sich an einer Linearführung 46 der Arbeitsbühne 40 abstützen. Zum Festlegen der Abtragsvorrichtung 20 an der Arbeitsbühne 40 kann eine Fixierungseinrichtung 36 vorgesehen sein.The removal device 20 is guided linearly along a working platform 40 in the vertical direction. For this purpose, the frame 22 of the removal device 20 has corresponding guide surfaces 23, which are supported on a linear guide 46 of the working platform 40. To fix the removal device 20 to the working platform 40, a fixing device 36 may be provided.

Die Arbeitsbühne 40 umfasst einen Schwenk- und/oder Führungsrahmen 42, welcher in einem zentralen Bereich eine Aufnahme 44 für die Abtragsvorrichtung 20 aufweist. Der Führungsrahmen 42 umfasst eine Bodenaufstandsfläche 47 und eine Mehrzahl von Streben 48.The working platform 40 comprises a pivoting and / or guiding frame 42, which has a receptacle 44 for the removal device 20 in a central area. The guide frame 42 includes a ground contact surface 47 and a plurality of struts 48.

Zum Verankern des auf den Boden aufgesetzten Führungsrahmens 22 ist eine Verankerungseinrichtung 60 vorgesehen. Die Verankerungseinrichtung 60 umfasst ein mittels eines Linearantriebs 64 in den Boden, insbesondere einen im Boden erstellten Schlitz, absenkbares Verankerungselement 62. Das Verankerungselement 62, beispielsweise ein Beton- oder Stahlblock, weist einen rechteckigen Querschnitt auf und ist angepasst, in einen Frässchlitz mit einem entsprechenden Querschnitt eingebracht zu werden. Zum leichteren Einführen des Verankerungselements 62 in einen Bodenschlitz ist an einem unteren Ende eine Einführschräge 63 vorgesehen.An anchoring device 60 is provided for anchoring the guide frame 22 placed on the floor. The anchoring device 60 comprises a anchoring element 62 which can be lowered by means of a linear drive 64 into the ground, in particular a slot created in the ground. The anchoring element 62, for example a concrete or steel block, has a rectangular cross section and is adapted to be inserted into a milling slot with a corresponding cross section , For easier insertion of the anchoring element 62 in a bottom slot, an insertion bevel 63 is provided at a lower end.

Der Linearantrieb 64 umfasst einen Stellzylinder 66, welcher einerseits an einer Aufnahme 68 und andererseits am Verankerungselement 62 angelenkt ist. Der Stellzylinder 66 erstreckt sich zumindest teilweise innerhalb des Verankerungselements 62.The linear drive 64 comprises an actuating cylinder 66, which is articulated on the one hand to a receptacle 68 and on the other hand to the anchoring element 62. The adjusting cylinder 66 extends at least partially within the anchoring element 62.

Zum Bereitstellen einer Drehbewegung des Führungsrahmens 42 relativ zu dem Verankerungselement 62 ist ein Schwenkantrieb 50 vorgesehen. Der Schwenkantrieb 50 ist fest am Führungsrahmen 42 angeordnet und umfasst ein drehend angetriebenes Antriebselement 52, welches mit einem drehfest mit dem Verankerungselement 62 verbundenen Koppelelement 70 in Eingriff ist. Durch drehendes Antreiben des Antriebselements 52 des Schwenkantriebs 50 bewegt sich der Schwenkantrieb 50 zusammen mit dem Führungsrahmen 42 um das im Boden drehfest verankerte Verankerungselement 62 beziehungsweise um das Koppelelement 70.To provide a rotational movement of the guide frame 42 relative to the anchoring element 62, a pivot drive 50 is provided. The pivot drive 50 is fixedly arranged on the guide frame 42 and comprises a rotationally driven drive element 52, which is engaged with a rotatably connected to the anchoring element 62 coupling element 70 in engagement. By rotationally driving the drive element 52 of the pivot drive 50, the pivot drive 50 moves together with the guide frame 42 about the anchoring element 62 anchored in the base in a rotationally fixed manner or about the coupling element 70.

Das Verankerungselement 62 ist in der Aufnahme 68, welche durch ein Gehäuse oder einen Rahmen gebildet sein kann, aufgenommen. Die Aufnahme 68 ist gegenüber dem Verankerungselement 62 drehfest angeordnet und gegenüber dem Führungsrahmen 42 drehbar gelagert. Der Schwenkantrieb 50 ist eingerichtet, die Aufnahme 68 mit dem daran angeordneten Verankerungselement 62 zu drehen.The anchoring element 62 is received in the receptacle 68, which may be formed by a housing or a frame. The receptacle 68 is arranged rotationally fixed relative to the anchoring element 62 and rotatably supported relative to the guide frame 42. The pivot drive 50 is configured to rotate the receptacle 68 with the anchoring element 62 arranged thereon.

Eine erste Ausführungsform des erfindungsgemäßen Verfahrens wird nachfolgend mit Bezug auf die Figuren 4 bis 8 beschrieben. Die Vorrichtung 10 mit Arbeitsbühne 40 und daran angeordneter Abtragsvorrichtung 20 wird an einem Trägergerät 12 aufgehängt, Fig. 4. Das Trägergerät 12 kann beispielsweise an einer Plattform 11 oberhalb eines Gewässerspiegels 4 angeordnet sein. Die Plattform 11 kann am Boden verankert sein, wie aus Fig. 5 ersichtlich. Das Trägergerät 12 umfasst einen schwenkbar an einer Basis 13 gelagerten Ausleger oder Mast 14, an welchem die Vorrichtung 10 aufgehängt ist. Die Vorrichtung 10 ist an einem oder mehreren Seilen 30 aufgehängt, welche ausgehend von der Abtragsvorrichtung 20 zu einer an dem Trägergerät 12 angeordneten Seilwinde 16 geführt sind. Das Seil 30 ist über eine am Mast 14 angeordnete Umlenkrolle 18 geführt.A first embodiment of the method according to the invention will be described below with reference to FIGS FIGS. 4 to 8 described. The device 10 with work platform 40 and ablation device 20 arranged thereon is suspended on a carrier device 12, Fig. 4 , The carrier device 12 may be arranged, for example, on a platform 11 above a water level 4. The platform 11 may be anchored to the ground as seen Fig. 5 seen. The carrier device 12 comprises a boom or mast 14 pivotally mounted on a base 13, on which the Device 10 is suspended. The device 10 is suspended on one or more ropes 30 which, starting from the removal device 20, are guided to a cable winch 16 arranged on the carrier device 12. The cable 30 is guided over a pulley 18 arranged on the mast 14.

Durch Abspulen des Seils 30 von der Seilwinde 16 wird die Abtragsvorrichtung 20 zusammen mit der Arbeitsbühne 40 auf den Gewässergrund beziehungsweise die Bodenoberfläche 82 abgesenkt, Fig. 5. Die Arbeitsbühne 40 ist hierbei zunächst, beispielsweise durch eine Klemmeinrichtung oder eine Verriegelungseinrichtung, an der Abtragsvorrichtung 20 festgelegt.By unwinding the cable 30 from the winch 16, the removal device 20 is lowered together with the working platform 40 on the bottom of the water or the bottom surface 82, Fig. 5 , The working platform 40 is in this case initially fixed to the removal device 20, for example by a clamping device or a locking device.

Nachdem die Arbeitsbühne 40 ausnivelliert und gegebenenfalls mittels geeigneter Verankerungen temporär am Boden 80 verankert ist, wird mittels der Abtragsvorrichtung - durch drehendes Antreiben der Fräsräder 24 und Absenken der Abtragsvorrichtung 20 in den Boden 80 - ein erster Frässchlitz erstellt, welcher als Verankerungsschlitz oder Führungsschlitz 84 bezeichnet wird. Der Verankerungsschlitz 84 weist eine Länge von vorzugsweise etwa 1 bis 5 Metern auf. Das Erstellen des Verankerungsschlitzes 84 ist in Fig. 6 dargestellt.After the working platform 40 is leveled out and optionally anchored by means of suitable anchors temporarily on the ground 80, by means of the removal device - by rotating driving the cutting wheels 24 and lowering the removal device 20 into the ground 80 - created a first Frässchlitz, which referred to as anchoring slot or guide slot 84 becomes. The anchoring slot 84 has a length of preferably about 1 to 5 meters. The creation of the anchoring slot 84 is in Fig. 6 shown.

Nachdem der Verankerungsschlitz 84 erstellt wurde, wird die Abtragsvorrichtung 20 aus dem Boden 80 zurückgezogen und vorzugsweise erneut an der Arbeitsbühne 40 festgelegt. Die Arbeitsbühne 40 wird zusammen mit der Abtragsvorrichtung 20 angehoben. Mittels einer Auslegerverstellung wird die seitlich am Führungsrahmen 42 angebrachte Verankerungseinrichtung 60, welche auch als Führungs- und Zentriereinrichtung bezeichnet werden kann, über dem erstellten Verankerungsschlitz 84 in Stellung gebracht. Der Führungsrahmen 42 wird also entlang der Bodenoberfläche 82 so versetzt, dass das Verankerungselement 62 direkt oberhalb des erstellten Verankerungsschlitzes 84 angeordnet und mit dem Verankerungsschlitz 84 ausgerichtet ist. Der Führungsrahmen 42 wird erneut am Gewässergrund 82 abgesetzt und das seitliche Verankerungselement 62 in den erstellten Schlitz eingefahren, Fig. 7.After the anchoring slot 84 has been created, the excavator 20 is withdrawn from the floor 80 and preferably reconnected to the work platform 40. The working platform 40 is lifted together with the removal device 20. By means of a boom adjustment, the laterally attached to the guide frame 42 anchoring device 60, which can also be referred to as a guide and centering device, placed over the created anchoring slot 84 in position. The guide frame 42 is thus offset along the bottom surface 82 so that the anchoring element 62 is disposed directly above the created anchoring slot 84 and aligned with the anchoring slot 84. The guide frame 42 is set down again on the water bottom 82 and the lateral anchoring element 62 retracted into the created slot, Fig. 7 ,

Durch Ablassen der Abtragsvorrichtung 20 beziehungsweise Fräseinheit wird ein erster seitlicher Frässchlitz 92a zur Erstellung des beispielsweise ringförmigen Fundaments erzeugt, Fig. 8. Die Endtiefe des Schlitzes 92 ist in den Figuren mit dem Bezugszeichen 86 gekennzeichnet. Zur Erstellung des Frässchlitzes 92a werden die Fräsräder 24 drehend angetrieben. Die Tiefe 86 des Schlitzes 92a ist hierbei größer als die Tiefe des Verankerungsschlitzes 84.By discharging the removal device 20 or milling unit, a first lateral milling slot 92a is produced for creating the, for example, annular foundation, Fig. 8 , The final depth of the slot 92 is indicated in the figures by the reference numeral 86 marked. To create the Frässchlitzes 92 a, the cutting wheels 24 are driven in rotation. The depth 86 of the slot 92 a is greater than the depth of the anchoring slot 84.

Nachdem der erste Schlitz 92a erstellt wurde, wird die Abtragsvorrichtung 20 aus dem Schlitz 92 zurückgezogen. Durch Drehen des an der Verankerungseinrichtung 60 oder Zentriereinheit angebrachten Schwenkantriebs 50, welcher auch als Dreheinrichtung bezeichnet werden kann, wird die Abtragsvorrichtung 20 zusammen mit dem Führungs- und Schwenkrahmen 42 um die abgesetzte Verankerungseinrichtung 60 bereichsweise geschwenkt.After the first slot 92a has been created, the removal device 20 is withdrawn from the slot 92. By rotating the attached to the anchoring device 60 or centering unit pivoting drive 50, which may also be referred to as a rotating device, the removal device 20 is pivoted together with the guide and swing frame 42 to the remote anchoring device 60 partially.

Der Führungsrahmen 42 wird also mittels des Schwenkantriebs 50 entlang einer vorzugsweise kreisförmigen Schwenkbahn 78 um das im Boden angeordnete Verankerungselement 62 um einen definierten Winkel gedreht. Verschiedene Schwenkstellungen des Führungsrahmens 42 sind in Fig. 8 dargestellt.The guide frame 42 is thus rotated by means of the pivot drive 50 along a preferably circular pivot path 78 about the anchoring element 62 arranged in the ground by a defined angle. Various pivotal positions of the guide frame 42 are in Fig. 8 shown.

Durch Abteufen der Abtragsvorrichtung 20 kann der nächste Frässchlitz 92b der ringförmigen Fundamentgründung erzeugt werden. Je nach Form des gewünschten Gesamtschlitzes 90 werden durch wiederholtes Verschwenken des Führungsrahmens 42 und wiederholtes Absenken der Abtragsvorrichtung 20 weitere, sich gegebenenfalls teilweise überlappende Schlitze 92 erstellt.By sinking the removal device 20, the next Frässchlitz 92 b of the annular foundation foundation can be generated. Depending on the shape of the desired overall slot 90, further, possibly partially overlapping slots 92 are created by repeated pivoting of the guide frame 42 and repeated lowering of the removal device 20.

Die Figuren 9 und 10 zeigen das Erstellen von einzelnen Schlitzen anhand einer zweiten Ausführungsform einer Arbeitsbühne 40. Die in den Figuren 9 und 10 dargestellte Arbeitsbühne 40 umfasst mehrere Verankerungseinrichtungen 60, um welche der Führungsrahmen 42 drehbar gelagert ist. Jeder Verankerungseinrichtung 60 ist hierzu ein separater Schwenkantrieb 50 zugeordnet.The Figures 9 and 10 show the creation of individual slots on the basis of a second embodiment of a working platform 40. The in the Figures 9 and 10 shown working platform 40 includes a plurality of anchoring means 60 about which the guide frame 42 is rotatably mounted. Each anchoring device 60 is associated with a separate pivot drive 50 for this purpose.

Ist, beispielsweise wegen einer Verdrehung eines Tragseils 30 oder eines Versorgungsschlauches, ein weiteres Verdrehen um die erste Verankerungseinrichtung 60 nicht mehr möglich oder sinnvoll, so wird das erste Verankerungselement 60 eingefahren, die Abtragsvorrichtung 20 abermals vom Gewässergrund 82 angehoben und mittels einer Auslegerverstellung des Fräsenträgergerätes soweit verstellt, dass die zweite, an der gegenüberliegenden Seite des Führungsrahmens 42 angebrachte Verankerungseinrichtung 60 über dem zentralen Verankerungsschlitz 84 in Stellung kommt. Sodann wird die gesamte Fräseinheit am Gewässergrund abgesetzt und das zweite Verankerungselement 62 in den Verankerungsschlitz 84 eingefahren. Mittels einer zweiten am Drehrahmen der zweiten Verankerungseinrichtung 60 angebrachten Dreheinrichtung 50 wird die Abtragsvorrichtung 20 mitsamt dem Führungsrahmen 42 soweit gedreht, dass die Abtragsvorrichtung 20 die noch fehlenden Frässchlitze 92 zur Erzeugung eines ringförmigen Fundamentschlitzes erstellen kann.If, for example, because of a rotation of a support cable 30 or a supply hose, further rotation about the first anchoring device 60 is no longer possible or sensible, the first anchoring element 60 is retracted, the ablation device 20 again raised by the body of water 82 and so far by means of a boom adjustment of the milling carrier device adjusts the second anchoring device 60 mounted on the opposite side of the guide frame 42 over the central anchoring slot 84 in position comes. Then, the entire milling unit is discontinued at the bottom of the water and the second anchoring element 62 is retracted into the anchoring slot 84. By means of a second rotary device 50 attached to the rotating frame of the second anchoring device 60, the removal device 20 together with the guide frame 42 is turned so far that the removal device 20 can create the missing milling slots 92 for producing an annular foundation slot.

Die vorherigen Verfahrensschritte, also insbesondere das Absenken der Arbeitsbühne 40 zusammen mit der Abtragsvorrichtung 20 auf den Gewässergrund 82 und das Verankern des Führungsrahmens 42 mittels einer der Verankerungseinrichtungen 60 erfolgt analog den Figuren 4 bis 7. Das oder gegebenenfalls die weiteren Verankerungseinrichtungen 60 können hierbei grundsätzlich ungenutzt sein.The previous method steps, ie in particular the lowering of the working platform 40 together with the removal device 20 to the bottom of the river 82 and the anchoring of the guide frame 42 by means of one of the anchoring means 60 is analogous to the FIGS. 4 to 7 , The or optionally the further anchoring devices 60 can in this case be unused in principle.

Im Gegensatz zu den Verfahrensschritten gemäß Fig. 8 wird bei den Figuren 9 und 10 durch sukzessives Verschwenken des Führungsrahmens 42 um eines der im Boden verankerten Verankerungselement 62 nur ein Teilabschnitt des ringförmigen Gesamtschlitzes 90 erstellt. Anschließend wird das jeweilige Verankerungselement 62 aus dem Verankerungsschlitz 84 rückgezogen und die Arbeitsbühne 40 so entlang der Bodenoberfläche 82 versetzt, dass ein weiteres Verankerungselement 62 direkt oberhalb des Verankerungsschlitzes 84 angeordnet und mit diesem ausgerichtet ist. Durch Einfahren des zweiten Verankerungselements 62 in den Verankerungsschlitz 84 wird der Führungsrahmen 42 erneut am Boden 80 verankert. Die weiteren Schlitze 92 werden durch sukzessives Verschwenken des Führungsrahmens 42 um das zweite Verankerungselement 62 erstellt.In contrast to the method steps according to Fig. 8 will be at the Figures 9 and 10 by successive pivoting of the guide frame 42 to one of the anchored in the ground anchoring element 62 only a portion of the annular overall slot 90 created. Subsequently, the respective anchoring element 62 is withdrawn from the anchoring slot 84 and the working platform 40 is displaced along the bottom surface 82 such that a further anchoring element 62 is arranged directly above the anchoring slot 84 and aligned therewith. By retracting the second anchoring element 62 into the anchoring slot 84, the guide frame 42 is anchored again to the floor 80. The further slots 92 are created by successively pivoting the guide frame 42 about the second anchoring element 62.

Durch das Vorsehen von mindestens zwei Verankerungseinrichtungen 60 ist zur Erstellung eines ringförmigen Schlitzes 90 keine Drehung des Führungsrahmens 42 um 360° erforderlich. Um die Handhabung der Seile 30 und/oder Versorgungsschläuche zu erleichtern, wird der Führungsrahmen 42 um jedes der Verankerungselemente 62 nur um weniger als 360° verschwenkt. Beispielsweise kann ein ringförmiger Schlitz durch Erstellen von mehreren ringsegmentförmigen Teilschlitzen hergestellt werden, welche jeweils durch Schwenken des Führungsrahmens 42 um ein eigenes Verankerungselement 62 hergestellt werden.By providing at least two anchoring means 60, no rotation of the guide frame 42 through 360 ° is required to create an annular slot 90. In order to facilitate the handling of the cables 30 and / or supply hoses, the guide frame 42 is pivoted about each of the anchoring elements 62 only by less than 360 °. For example, an annular slot can be made by creating a plurality of ring-segment-shaped sub-slots, each made by pivoting the guide frame 42 about its own anchoring element 62.

Die Figuren 11 bis 13 zeigen beispielhafte Ausführungsformen eines erfindungsgemäß hergestellten Gesamtschlitzes beziehungsweise Gründungselementes 90. Der Gesamtschlitz beziehungsweise das Gründungselement 90 umfasst jeweils mehrere Einzelschlitze beziehungsweise einzelne Gründungselemente 92a bis 92g. Die Schlitze beziehungsweise Gründungselemente 92a bis 92g sind ringförmig um einen zentralen Verankerungsschlitz 84 angeordnet.The FIGS. 11 to 13 show exemplary embodiments of an inventively produced total slot or foundation element 90. The total slot or the foundation member 90 each includes a plurality of individual slots or individual foundation elements 92a to 92g. The slots or foundation elements 92a to 92g are arranged in a ring around a central anchoring slot 84.

Bei den Ausführungsformen gemäß Figuren 11 und 12 sind die einzelnen Schlitze beziehungsweise Gründungselemente 92a bis 92g um eine zentrale Drehachse 76, welche durch den Verankerungsschlitz 84 verläuft, zueinander verschwenkt. Die einzelnen Schlitze beziehungsweise Gründungselemente 92 können sich überlappen, so dass ein geschlossenes, ringförmiges Gründungselement 90 gebildet werden kann. Zum Bilden des Gründungselements 90 wird ein Tragrohr 100 in die noch nicht ausgehärtete Gründungsstruktur eingebracht, wie in Fig. 12 unten dargestellt.In the embodiments according to Figures 11 and 12 are the individual slots or foundation elements 92a to 92g about a central axis of rotation 76 which passes through the anchoring slot 84, pivoted to each other. The individual slots or foundation elements 92 may overlap, so that a closed, annular foundation element 90 can be formed. To form the foundation element 90, a support tube 100 is inserted into the not yet hardened foundation structure, as in FIG Fig. 12 shown below.

Fig. 13 zeigt eine Ausführungsform eines ringförmigen Gesamtschlitzes 90, bei welcher die einzelnen Schlitze 92a bis 92g in unterschiedlichen Abständen von der Drehachse 76 angeordnet sind. Auf diese Weise ergibt sich ein im Wesentlichen ovales Gründungselement 90. Fig. 13 shows an embodiment of an annular overall slot 90, in which the individual slots 92a to 92g are arranged at different distances from the axis of rotation 76. In this way, a substantially oval foundation element 90 results.

Claims (14)

  1. Working platform for guiding a removal device (20), with which a foundation element can be produced in the ground, in particular in the bed of a body of water, through the removal of ground material, comprising
    - a guide frame (42) which can be placed onto a ground surface (82) for linearly guiding the removal device (20) and
    - at least one anchoring element (62) which can be lowered into the ground for anchoring the guide frame (42) to the ground,
    characterized in that
    - a receiving part (68) is provided in which the anchoring element (62) is linearly guided,
    - for providing a vertical pivot axis in the ground (82), the anchoring element (62) can be anchored in a torque-proof manner in the ground (82),
    - the guide frame (42) is supported in a pivotable manner about the anchoring element (62) and the vertical pivot axis and
    - at the working platform (40) a pivot drive (50) is provided, with which the guide frame (42) can be pivoted about the anchoring element (62) anchored in the ground and the vertical pivot axis.
  2. Working platform according to claim 1,
    characterized in that
    the anchoring element (62) has an angular cross-section.
  3. Working platform according to claim 1 or 2,
    characterized in that
    on the anchoring element (62) a ring-shaped coupling element (70) is arranged, which can be driven in a rotating manner by the pivot drive (50) in order to pivot the guide frame (42) about the anchoring element (62).
  4. Working platform according to any one of claims 1 to 3,
    characterized in that
    a linear drive (64) for lowering the anchoring element (62) into the ground is provided.
  5. Working platform according to any one of claims 1 to 4,
    characterized in that
    the receiving part (68) for receiving and linearly guiding the anchoring element (62) is supported in a rotatable manner relative to the guide frame (42).
  6. Working platform according to any one of claims 1 to 5,
    characterized in that
    at its lower end the anchoring element (62) has an inclined insertion surface (63) for insertion into a trench in the ground.
  7. Device for producing a foundation element in the ground comprising
    - a working platform (40) according to any one of claims 1 to 6 and
    - a removal device (20) guided linearly on the working platform (40) for the removal of ground material.
  8. Device according to claim 7,
    characterized in that
    the removal device (20) has at least one cutting wheel (24) rotatable about a horizontal axis of rotation and/or a grab.
  9. Device according to claim 7 or 8,
    characterized in that
    a fixation means (36) for fixing the working platform (40) on the removal device (20) is provided, wherein the working platform (40) can be lifted by means of the removal device (20).
  10. Device according to any one of claims 7 to 9,
    characterized in that
    the removal device (20) has a suspension means (28) for suspension on a carrier implement (12).
  11. Foundation method, in particular realizable by means of a device according to any one of claims 7 to 10, in which
    - a guide frame (42) is placed onto the ground and anchored to the said ground by lowering an anchoring element (62) into the ground,
    - by means of a removal device (20) supported on the guide frame (42) a first trench (92a) is produced in the ground through the removal of ground material,
    - the removal device (20) is withdrawn from the first trench (92a),
    - the guide frame (42) is pivoted about the anchoring element (62) anchored in a torque proof manner and a vertical pivot axis and
    - by means of the removal device (20) a second trench (92b) offset with respect to the first trench (92a) is produced in the ground through the removal of ground material, and
    - the trenches (92) are filled with a hardenable mass in order to form a foundation element.
  12. Method according to claim 11,
    characterized in that
    by repeatedly pivoting the guide frame (42) about the anchoring element (62) and repeatedly producing trenches (92) a ring-shaped or ring segment-shaped overall trench (90) is produced in the ground.
  13. Method according to any one of claims 11 or 12,
    characterized in that
    an anchoring trench (84) is produced in the ground, into which the anchoring element (62) can be lowered linearly.
  14. Method according to claim 13,
    characterized in that
    the anchoring trench (84) is produced by means of the removal device (20) supported on the guide frame (42).
EP13000357.7A 2013-01-24 2013-01-24 Work platform, device for creating a foundation element and foundation method Active EP2759641B1 (en)

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EP2759641A1 (en) 2014-07-30
KR20140095437A (en) 2014-08-01

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