EP3081699B1 - Civil engineering device and method for creating a foundation element in the ground - Google Patents

Civil engineering device and method for creating a foundation element in the ground Download PDF

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Publication number
EP3081699B1
EP3081699B1 EP15163502.6A EP15163502A EP3081699B1 EP 3081699 B1 EP3081699 B1 EP 3081699B1 EP 15163502 A EP15163502 A EP 15163502A EP 3081699 B1 EP3081699 B1 EP 3081699B1
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EP
European Patent Office
Prior art keywords
ground
hole
walls
removal
collecting
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EP15163502.6A
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German (de)
French (fr)
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EP3081699A1 (en
Inventor
Albert Riebliner
André Seidel
Herbert Karl
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 Spezialtiefbau GmbH
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Bauer Spezialtiefbau GmbH
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Priority to EP15163502.6A priority Critical patent/EP3081699B1/en
Publication of EP3081699A1 publication Critical patent/EP3081699A1/en
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Publication of EP3081699B1 publication Critical patent/EP3081699B1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
    • E02D3/126—Consolidating by placing solidifying or pore-filling substances in the soil and mixing by rotating blades
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/13—Foundation slots or slits; Implements for making these slots or slits

Definitions

  • the invention relates to a civil engineering device for creating a foundation element in the ground, as basically from the document EP 145 2654 A known, with a removal device for creating a hole in the ground by removing soil material, a support means on which the removal device is mounted substantially vertically adjustable and retractable into the ground, and a feed device for feeding an additional mass into the hole, wherein the removal device is formed, in the hole to mix the removed soil material with the additional mass to a soil mixture for forming the foundation element, according to the preamble of claim 1.
  • the invention further relates to a collecting device for a civil engineering device for creating a foundation element in the ground, according to the preamble of claim 5.
  • the invention further relates to a method for creating a foundation element in the soil, in which removed by sinking a removal device in the soil soil material and created a hole in the soil, an additional mass is fed into the hole and the removed soil with the additional mass to a Soil mixture is mixed, with which the foundation element is formed, according to the preamble of claim 14th
  • a generic civil engineering device and a generic method are from the EP 2 666 911 A1 known.
  • To create a floor mortar wall as a foundation element several parallel augers are drilled in a soil, with soil material is removed. The removed soil material is still in the Borehole mixed with a binder suspension, wherein the mixture thus formed cures to the foundation element.
  • a significant advantage of such in-situ methods is that the soil material itself is used to form the foundation element. Thus, fewer building materials have to be transported to the construction site and less removed soil material has to be transported away and landfilled, since a large part thereof remains in the ground.
  • the invention has for its object to provide a civil engineering device and a method for creating a foundation element in the ground, with which a foundation element can be created particularly efficient and in a particularly resource-saving manner.
  • the object is according to the invention by a civil engineering device having the features of claim 1, by a collecting device for a civil engineering device for creating a foundation element in the ground with the features of claim 5 or by a method for creating a foundation element in the ground with the features of claim 14 solved.
  • Preferred embodiments of the invention are indicated in the dependent claims.
  • a basic idea of the invention is that a collecting device is provided, which is arranged on an upper side of the hole.
  • the collecting device at least partially surrounds the hole, wherein a receiving chamber for the soil mixture is formed.
  • the at least partially surrounding the hole with the catching device serves for the removal device to be guided through the catching device at the beginning of the removal operation and also to protrude into the receiving chamber during the lowering operation.
  • the at least partially surrounding the hole with the collecting device further serves, in particular, to collect and collect the steadily increasing quantity of displaced soil mixture in the receiving chamber. An uncontrolled flow of the leaked soil mixture is thus prevented.
  • sinking the receiving chamber thus fulfills a collecting and collecting function for the displaced and emergent soil mixture.
  • the soil mixture is directly available for recycling at the hole.
  • the displaced volume in the bottom hole is correspondingly reduced, as a result of which the level of soil mixture in the hole drops.
  • the level increases again.
  • the catcher serves as a kind of buffer for soil mixing. This saves resources and reduces transport and landfill costs.
  • a particularly preferred embodiment of the invention may consist in that the removal device has at least one drilling and mixing screw, which is rotatably driven about a vertical axis of rotation.
  • the drilling and mixing screw can be designed as an endless screw for removing soil material at the borehole bottom and for mixing the removed soil material with an added additional mass, preferably with binder suspension.
  • an endless screw can helix-shaped helical pieces and sections alternate with mixing paddles. This also serves in particular for the homogenization of the soil mixture in the entire borehole during and / or after the sinking.
  • a rotatable drive of the drilling and mixing screw in at least one, preferably in the right and left-hand direction, a direction-changing promotion of the removed soil material and the additional mass supplied in the well and their mixing in different borehole depths and thus the homogenization is achieved.
  • a cutting device can further be provided which has cutting tools adapted to the hardness of the soil material.
  • the removal device has a trench wall cutter with a milling frame, mounted on the underside of cutting wheels rotating about a horizontal axis of rotation and can be driven.
  • the cutting wheels can serve here in addition to the removal of soil material and the mixture of the removed soil material with an additional mass, especially with binder suspension, directly to the bottom hole itself.
  • the homogenization of the soil mixture can be ensured by the rotatable drive of the cutting wheels, which preferably have a pairwise opposite direction of rotation.
  • the cutting wheels typically have tool holders and cutting tools, the latter can be Abtragszähne and can be arranged in rows on the cutting wheel.
  • the number of cutting wheels is further typically straight, but especially but not necessarily two or four cutting wheels may be provided in at least one horizontal plane.
  • a particularly expedient operation can result from the fact that a mobile base carriage is provided on which a vertical mast or a cantilever arm is arranged for holding the removal device.
  • the carrier device may have a mobile base carriage, in particular a tracked vehicle, on which a vertical mast or a cantilever arm can be arranged, wherein the removal device can be mounted on it and arranged to be vertically adjustable.
  • a positioning and alignment of the removal device for the preparation of a foundation element in the ground can thus be made possible by a method of the base carriage and / or a new alignment of the mast or the boom with the removal device.
  • a plurality of foundation elements in any manufacturing sequence, in particular in overlapping manner can be sunk.
  • a receiving chamber for the soil mixture is characterized in that at least two walls are provided, which are connected to form a receiving chamber for the soil mixture.
  • a typically suitable wall has a length of about 1 m to about 5 m and a height of about 0.3 m to about 1.5 m.
  • the collecting device is arranged on the upper side of the hole and / or on the carrier device of the civil engineering device, but in particular not necessarily arranged on a guide device provided for the removal device, whereby, together with the positioning of the removal device at the hole to be scanned, the positioning of the collecting device around the allowed to be rejected hole in an efficient manner.
  • the catcher is box-shaped with four lateral walls.
  • the collecting device can have any desired arrangement of walls which are intended to receive the emerging soil mixture.
  • a particularly preferred embodiment of the invention may consist in that the at least two walls are arranged conically with each other, wherein an upwardly widening funnel-shaped receiving chamber is formed.
  • the conical arrangement of the walls at a front and a back of the collecting device can support a targeted recycling of the leaked soil mixture when removing the removal device.
  • the receiving volume of the receiving chamber is additionally increased by the upwardly flared funnel-shaped configuration.
  • a further advantageous embodiment of the collecting device can according to the invention consist in that at least two walls opposite each other are arranged and that the at least two walls are connected via at least one linkage device which is arranged in a side region between the opposite walls.
  • at least one linkage device can be provided, which can connect the at least two walls to one another.
  • linkage devices are provided, which are each arranged in a side region.
  • linkage devices for stiffening the collecting device may be present in any number.
  • the linkage device comprises two diagonal struts, which are arranged crosswise to each other.
  • any desired number of struts of a linkage device can be arranged in basically any way for stiffening the catching device.
  • a crosswise arrangement of two diagonal or transverse struts can cause a particularly high degree of stiffening of the catcher.
  • the provision of additional transverse struts in horizontal alignment for further stiffening may also be provided.
  • any device for changing the length of the diagonal strut can be selected, in particular also hydraulic cylinders or a telescopic strut Facility.
  • a particularly expedient operation for the collecting device can result from the fact that at least one diagonal strut has a telescopic area, with which a length of the diagonal strut is variable.
  • the telescopic region of the diagonal strut which can be adjusted in its elongated extent, can allow a variable adaptation of the receiving volume to the volume of the exiting soil mixture.
  • the collecting device can thus be used for different displacement volumes, which are in particular dependent on the depth and the volume of the ablation device.
  • the collecting device in a lower region by a change in length of the diagonal struts, similar to a gripper bucket contractible and / or closable. It can also be set a tilt angle of the side walls.
  • a particularly advantageous embodiment of the collecting device with the telescopic area provided according to the invention may consist in that the telescopic area comprises at least one male threaded element and at least one female threaded element.
  • the male threaded member about the threaded axis rotatably connected to the wall of the catcher and the female threaded member may be provided with additional structural elements, which may make it possible, by means of force on this, preferably by means of a tool, a twisting of the female threaded member on the male Threaded element and thus cause a change in length in the direction of the threaded axis and thus also a change in length of the diagonal strut itself.
  • actuating cylinder may be provided, which may allow about a hydraulic adjustment of the walls.
  • a particularly advantageous embodiment of the collecting device according to the invention may consist in that the diagonal braces are hingedly connected to the walls.
  • the articulated connection of the diagonal struts with the walls can cause a tension-free change in the conical position of the walls while maintaining a force-locking connection.
  • the joints can also as be formed releasable fasteners. Due to the partially detachable and / or articulated connections, the collecting device may be collapsible or removable in a particularly efficient and space-saving manner for transport.
  • a compound of the diagonal braces themselves may also be provided.
  • the collecting device according to the invention can be arranged as desired on the civil engineering device and / or on the upper side of the hole.
  • a connection device is provided for connection to the civil engineering device.
  • the collecting device is attached to the carrier device of the civil engineering device by means of the connecting device, but in particular, but not necessarily, attachment to a guide device provided for the removal device can take place.
  • corresponding connecting structures may be provided on the collecting device and / or on the carrier device, in particular on the guide device, which may preferably be formed by provided on the collecting device clevises and provided on the connecting means receiving holes and their connection with secured bolts.
  • the securing of the bolt can be done in particular by means of spring pin or other splint shapes.
  • the walls of the collecting device can be provided with end profiles for holding the connecting structures, which can also serve for fastening the diagonal struts or additional struts, in particular the transverse struts.
  • the method is an essential aspect of the invention for solving the above-mentioned problem that emerges when creating the foundation element from the hole in the soil soil mixture, which is collected in a receiving chamber of a collecting device at an upper side of the hole.
  • Another aspect of the method according to the invention may consist in that when removing the removal device from the hole soil mixture from the Recording chamber is returned to the hole.
  • the soil mixture which has escaped during the drilling and which is present in a controlled manner in a collecting manner in the collecting device can be used to extract the displacing volume when the removal device is withdrawn. Due to the funnel-shaped design of the collecting device, which is given by the conical position of the walls, an at least partially automatic return of the soil mixture from the collecting device can be ensured again in the hole by sliding back.
  • Foundation elements in the context of the invention are not only load-bearing element or slot or sealing walls, but basically all structures which are made in the soil from a soil mixture, in particular a so-called soil mortar.
  • the catcher 10 has two walls 20 which typically have an approximate width of 2m and an approximate height of 0.5m. Inside the two walls 20, a receiving chamber 12 is formed. The receiving chamber 12 is limited at a front side 15 and at a rear side 16 of the collecting device 10 by a respective wall 20 and laterally and open at the top and bottom. The receiving chamber 12 describes a volume for receiving soil material, which is spanned by the two walls 20. In the two side regions 14 of the walls 20 linkage devices 30 are arranged.
  • the connecting device 50 is indicated in dashed lines, which the collecting device 10 with the in the FIGS. 1 to 3 Civil engineering apparatus 100, not shown, connects. Also not shown are the removal device 60, which protrudes through the connecting device 50 and the collecting device 10 during the removal of soil material, and the support means 70 of the civil engineering device 100th
  • the collecting device 10 is connected by four clevises 52, which are mounted in pairs on upper end profiles 22 of the walls 20 and connected by bolts 53, with the connecting device 50.
  • the bolts 53 are secured with spring connectors 54 and provided with handles.
  • different receiving holes 51 are provided on the connecting device 50, which predefine two possible conical positions of the walls 20, wherein these are adjusted by means of a change in length of the diagonal braces 32, respectively their telescopic regions 34.
  • FIG Fig. 2 The two walls 20 of the collecting device 10 provided in this first exemplary embodiment are shown in FIG Fig. 2 shown in the first conical position and in dashed representation in the second conical position. In the first position, both walls 20 enclose an angle of approximately 20 ° and in the second position an angle of approximately 40 °. On the walls 20 are in a side region 14 joints 21 provided to pivotally connect the linkage means 30 to the walls 20.
  • the two linkage devices 30 provided in this first embodiment each have two diagonal struts 32 and one transverse strut 33 each.
  • the diagonal braces 32 connect the first wall 20 with upper and lower joints 21 with the second wall 20 with opposite lower and upper joints 21.
  • the joints 21 are designed so that they allow an outward and inward pivoting of the walls 20.
  • telescopic portions 34 are provided in the diagonal struts 32 above an intersection of the linkage means at which both diagonal struts 32 are interconnected.
  • the two telescopic regions 34 have two male threaded elements 36, which are held by two interconnected female threaded elements 38.
  • the diagonal struts 32 can be lengthened or shortened. Since in the present embodiment, the lower surface of the receiving chamber 12 is constrained by the cross braces 33 causes the change in length of the diagonal braces 32 only an enlargement or reduction of the upper surface of the receiving chamber 12.
  • the cross braces 33 are not changeable in length and hold the two walls 20 at their lower sides at lower end profiles 22.
  • the length of the transverse struts 33 in the exemplary embodiment is approximately 1 m.
  • the catcher 10 as in the first embodiment, has two walls 20 which in this embodiment typically have an approximate width of 2.5m and an approximate height of 0.8m.
  • a receiving chamber 12 is bounded by the two walls 20 and open laterally and downwardly and upwardly.
  • linkage devices 30 are arranged in the two side regions 14 of the walls 20.
  • the catcher 10 is connected by four clevises 52, which are mounted in pairs on the walls 20 and by means of bolts 53, with the connecting device 50 connected.
  • the connecting device 50 which in the Fig. 4 is not fully illustrated, is indicated by four construction elements of the connecting device 50, which have receiving holes 51 for receiving the bolt 53.
  • the two walls 20 of the collecting device 10 provided in this second exemplary embodiment are shown in FIG Fig. 4 shown in a conical position.
  • joints 21 are provided in a side region 14 for pivotally connecting the linkage means 30 to the walls 20.
  • the two linkage devices 30 each have two struts 31, which each consist of a diagonal strut 32 and a transverse strut 33.
  • the arrangement of a further crosswise arranged diagonal strut 32 by means of further joints on the walls 20 is additionally possible, in particular for increased stiffening of the catching device 10.
  • the diagonal struts 32 connect the walls 20 to an upper hinge 21 and an opposite lower hinge 21 on one side and in opposite arrangement with a lower hinge 21 and an opposite upper hinge 21 on the other side.
  • telescopic areas 34 are provided in the diagonal struts 32 and in the transverse struts 33.
  • the telescopic areas 34 have predefined latching positions, which are latched by means of screw connections.
  • it is provided to allow by changing the length of the struts 31, an enlargement or reduction of the lower surface of the receiving chamber 12.
  • all struts 31 are changeable in length, whereby on the one hand a change in volume of the receiving chamber 12 and on the other hand, an adaptation of the collecting device 10 to the size of the removal device 60, in particular their horizontal extent is possible. In this way, the lower surface of the receiving chamber 12 can be adapted to the size of the hole and to the outlet region of the soil mixture.
  • Fig. 5 shows the civil engineering device 100 according to the invention with a movable base carriage 101, which has a caterpillar drive and is rotatable about a vertical axis above the drive.
  • the carrier device 70 of the civil engineering device 100 in particular also has a vertical mast 72, on which the removal device 60 is mounted vertically adjustable.
  • the removal device 60 which protrudes through the catcher 10, mounted.
  • the collecting device 10 is connected to the connecting device 50, through which the removal device 60 also protrudes.
  • the connecting device 50 connects the collecting device 10 with the carrier device 70 of the civil engineering device 100, in particular with the mast 72.
  • the collecting device 10 and the connecting device 50 can thus remain stationary over the hole, while the removal device 60 by a method of the carriage 74 on the mast 72 the Abteufen the hole allows while constantly protruding through the catcher 10.

Description

Die Erfindung betrifft ein Tiefbaugerät zum Erstellen eines Gründungselementes im Boden, so wie grundsätzlich aus dem Dokument EP 145 2654 A bekannt, mit einer Abtragseinrichtung zum Erstellen eines Lochs in dem Boden durch Abtragen von Bodenmaterial, einer Trägereinrichtung, an welcher die Abtragseinrichtung im Wesentlichen vertikal verstellbar gelagert und in den Boden einfahrbar ist, und einer Zuführeinrichtung zum Zuführen einer Zusatzmasse in das Loch, wobei die Abtragseinrichtung ausgebildet ist, in dem Loch das abgetragene Bodenmaterial mit der Zusatzmasse zu einer Bodenmischung zum Bilden des Gründungselementes zu vermischen, gemäß dem Oberbegriff des Anspruchs 1.
Die Erfindung betrifft weiterhin eine Auffangeinrichtung für ein Tiefbaugerät zum Erstellen eines Gründungselementes im Boden, gemäß dem Oberbegriff des Anspruchs 5.
Die Erfindung betrifft weiterhin auch ein Verfahren zum Erstellen eines Gründungselementes im Boden, bei welchem durch Abteufen einer Abtragseinrichtung in den Boden Bodenmaterial abgetragen und ein Loch in dem Boden erstellt wird, eine Zusatzmasse in das Loch zugeführt wird und das abgetragene Bodenmaterial mit der Zusatzmasse zu einer Bodenmischung vermischt wird, mit welcher das Gründungselement gebildet wird, gemäß dem Oberbegriff des Anspruchs 14.
Ein gattungsgemäßes Tiefbaugerät und ein gattungsgemäßes Verfahren sind aus der EP 2 666 911 A1 bekannt. Zur Erstellung einer Bodenmörtelwand als Gründungselement werden mehrere parallele Bohrschnecken in einen Boden abgebohrt, wobei Bodenmaterial abgetragen wird. Das abgetragene Bodenmaterial wird noch im Bohrloch mit einer Bindemittelsuspension vermengt, wobei die so gebildete Mischung zu dem Gründungselement aushärtet.The invention relates to a civil engineering device for creating a foundation element in the ground, as basically from the document EP 145 2654 A known, with a removal device for creating a hole in the ground by removing soil material, a support means on which the removal device is mounted substantially vertically adjustable and retractable into the ground, and a feed device for feeding an additional mass into the hole, wherein the removal device is formed, in the hole to mix the removed soil material with the additional mass to a soil mixture for forming the foundation element, according to the preamble of claim 1.
The invention further relates to a collecting device for a civil engineering device for creating a foundation element in the ground, according to the preamble of claim 5.
The invention further relates to a method for creating a foundation element in the soil, in which removed by sinking a removal device in the soil soil material and created a hole in the soil, an additional mass is fed into the hole and the removed soil with the additional mass to a Soil mixture is mixed, with which the foundation element is formed, according to the preamble of claim 14th
A generic civil engineering device and a generic method are from the EP 2 666 911 A1 known. To create a floor mortar wall as a foundation element several parallel augers are drilled in a soil, with soil material is removed. The removed soil material is still in the Borehole mixed with a binder suspension, wherein the mixture thus formed cures to the foundation element.

Ein weiteres sogenanntes In-situ-Verfahren, bei welchem abgetragenes Bodenmaterial noch im Boden mit einer Bindemittelsuspension vermengt wird, geht aus der EP 1 452 645 B2 hervor. Bei diesem Verfahren wird das Bodenmaterial durch eine spezielle Schlitzwandfräse abgetragen, welche das abgetragene Bodenmaterial noch im Frässchlitz zu einer aushärtbaren Bodenmischung verbindet.Another so-called in-situ process, in which removed soil material is still mixed in the soil with a binder suspension, goes out of the EP 1 452 645 B2 out. In this method, the soil material is removed by a special trench wall cutter, which connects the removed soil material still in the milling slot to a curable soil mixture.

Ein maßgeblicher Vorteil bei derartigen In-situ-Verfahren liegt darin, dass das Bodenmaterial selbst zur Ausbildung des Gründungselementes herangezogen wird. Es müssen somit weniger Baustoffe zur Baustelle transportiert und weniger abgetragenes Bodenmaterial abtransportiert und deponiert werden, da ein Großteil davon im Baugrund verbleibt.A significant advantage of such in-situ methods is that the soil material itself is used to form the foundation element. Thus, fewer building materials have to be transported to the construction site and less removed soil material has to be transported away and landfilled, since a large part thereof remains in the ground.

Insbesondere bei Baumaßnahmen in kontaminierten Böden können erhebliche Deponiekosten für abgetragenes Bodenmaterial anfallen.In particular, construction work in contaminated soils can incur considerable landfill costs for removed soil material.

Bei dem bekannten Verfahren lässt es sich kaum vermeiden, dass beim Erstellen des Gründungselementes Bodenmischung an der Bodenoberfläche austritt. Diese austretende Masse muss entweder entsorgt werden oder aufwändig in das Bodenloch rückgeführt werden.In the known method, it is difficult to prevent ground mixture from leaking out of the soil surface when the foundation element is being created. This escaping mass must either be disposed of or be returned to the bottom hole in a laborious manner.

Der Erfindung liegt die Aufgabe zugrunde, ein Tiefbaugerät und ein Verfahren zum Erstellen eines Gründungselementes im Boden anzugeben, mit welchen ein Gründungselement besonders effizient und in besonders ressourcenschonender Weise erstellt werden kann.The invention has for its object to provide a civil engineering device and a method for creating a foundation element in the ground, with which a foundation element can be created particularly efficient and in a particularly resource-saving manner.

Die Aufgabe wird nach der Erfindung durch ein Tiefbaugerät mit den Merkmalen des Anspruchs 1, durch eine Auffangeinrichtung für ein Tiefbaugerät zum Erstellen eines Gründungselementes im Boden mit den Merkmalen des Anspruchs 5 beziehungsweise durch ein Verfahren zum Erstellen eines Gründungselementes im Boden mit den Merkmalen des Anspruchs 14 gelöst. Bevorzugte Ausführungen der Erfindung sind in den abhängigen Ansprüchen angegeben.The object is according to the invention by a civil engineering device having the features of claim 1, by a collecting device for a civil engineering device for creating a foundation element in the ground with the features of claim 5 or by a method for creating a foundation element in the ground with the features of claim 14 solved. Preferred embodiments of the invention are indicated in the dependent claims.

Ein Grundgedanke der Erfindung besteht darin, dass eine Auffangeinrichtung vorgesehen ist, welche an einer Oberseite des Lochs angeordnet ist. Durch das Vorsehen der Auffangeinrichtung an der Oberseite des Lochs wird es ermöglicht, die beim Abteufen verdrängte Bodenmischung, insbesondere das austretende Bodenmaterial und die austretende Zusatzmasse, direkt an der Oberfläche und in der Nähe des Lochs zu kontrollieren und somit die Bodenmischung für weitere Verwendungen, insbesondere zum Rückführen in das Loch vorzusehen.A basic idea of the invention is that a collecting device is provided, which is arranged on an upper side of the hole. By providing the catcher at the top of the hole makes it possible to control the soil mixture displaced during the drilling, in particular the outgoing soil material and the exiting additional mass, directly on the surface and in the vicinity of the hole and thus the soil mixture for further uses, in particular for recycling to provide the hole.

Ein weiterer Grundgedanke der Erfindung besteht darin, dass die Auffangeinrichtung das Loch zumindest teilweise umgibt, wobei eine Aufnahmekammer für die Bodenmischung gebildet ist. Das zumindest teilweise Umgeben des Lochs mit der Auffangeinrichtung dient dazu, dass die Abtragseinrichtung zu Beginn des Abteufvorgangs durch die Auffangeinrichtung hindurch geführt werden kann und auch während des Abteufens in die Aufnahmekammer hindurchragen kann. Das zumindest teilweise Umgeben des Lochs mit der Auffangeinrichtung dient weiter insbesondere dazu, die stetig ansteigende Quantität an verdrängter Bodenmischung in der Aufnahmekammer aufzufangen und zu sammeln. Ein unkontrolliertes Abfließen der herausgetretenen Bodenmischung wird somit verhindert. Beim Abteufen erfüllt die Aufnahmekammer somit eine Auffang- und Sammelfunktion für die verdrängte und heraustretende Bodenmischung. Im Weiteren steht beim Herausziehen der Abtragseinrichtung die Bodenmischung direkt zur Rückführung am Loch zur Verfügung. Durch das Rückziehen der Abtragseinrichtung reduziert sich entsprechend das verdrängte Volumen in dem Bodenloch, wodurch der Füllstand an Bodenmischung im Loch sinkt. Durch Nachströmen von Bodenmischung aus der Auffangeinrichtung in das Loch erhöht sich der Füllstand wieder. Durch die Auffangeinrichtung wird somit ein kontrolliertes Aufnehmen und effizientes Rückführen von verdrängter Bodenmischung ermöglicht. Die Auffangeinrichtung dient als eine Art Zwischenspeicher für die Bodenmischung. Dies ist ressourcenschonend und mindert Transport- und Deponiekosten.Another basic idea of the invention is that the collecting device at least partially surrounds the hole, wherein a receiving chamber for the soil mixture is formed. The at least partially surrounding the hole with the catching device serves for the removal device to be guided through the catching device at the beginning of the removal operation and also to protrude into the receiving chamber during the lowering operation. The at least partially surrounding the hole with the collecting device further serves, in particular, to collect and collect the steadily increasing quantity of displaced soil mixture in the receiving chamber. An uncontrolled flow of the leaked soil mixture is thus prevented. When sinking the receiving chamber thus fulfills a collecting and collecting function for the displaced and emergent soil mixture. Furthermore, when removing the removal device, the soil mixture is directly available for recycling at the hole. As a result of the retraction of the removal device, the displaced volume in the bottom hole is correspondingly reduced, as a result of which the level of soil mixture in the hole drops. By subsequent flow of soil mixture from the catcher into the hole, the level increases again. By the catcher thus a controlled recording and efficient recycling of displaced soil mixture is made possible. The catcher serves as a kind of buffer for soil mixing. This saves resources and reduces transport and landfill costs.

Eine besonders bevorzugte Ausgestaltung der Erfindung kann darin bestehen, dass die Abtragseinrichtung mindestens eine Bohr- und Mischschnecke aufweist, welche um eine vertikale Drehachse drehbar angetrieben ist. Die Bohr- und Mischschnecke kann dabei als Endlosschnecke zum Abtragen von Bodenmaterial an der Bohrlochsohle und zum Mischen des abgetragenen Bodenmaterials mit einer zugeführten Zusatzmasse, vorzugsweise mit Bindemittelsuspension, ausgebildet sein. Neben der Ausbildung als Endlosschnecke, können sich helixförmige Wendelstücke und Abschnitte mit Mischpaddeln abwechseln. Dies dient insbesondere auch der Homogenisierung der Bodenmischung im gesamten Bohrloch während und/oder nach dem Abteufen. Durch einen drehbaren Antrieb der Bohr- und Mischschnecke in mindestens einer, bevorzugt in rechts- und linksdrehender Richtung, wird eine richtungswechselnde Förderung des abgetragenen Bodenmaterials und der zugeführten Zusatzmasse im Bohrloch sowie deren Durchmischung in unterschiedlichen Bohrlochtiefen und somit die Homogenisierung erreicht. In einem unteren Bereich der Abtragseinrichtung kann weitergehend eine Schneideinrichtung vorgesehen sein, welche der Härte des Bodenmaterials angepasste Schneidwerkzeuge aufweist.A particularly preferred embodiment of the invention may consist in that the removal device has at least one drilling and mixing screw, which is rotatably driven about a vertical axis of rotation. The drilling and mixing screw can be designed as an endless screw for removing soil material at the borehole bottom and for mixing the removed soil material with an added additional mass, preferably with binder suspension. In addition to training as an endless screw, can helix-shaped helical pieces and sections alternate with mixing paddles. This also serves in particular for the homogenization of the soil mixture in the entire borehole during and / or after the sinking. By a rotatable drive of the drilling and mixing screw in at least one, preferably in the right and left-hand direction, a direction-changing promotion of the removed soil material and the additional mass supplied in the well and their mixing in different borehole depths and thus the homogenization is achieved. In a lower region of the removal device, a cutting device can further be provided which has cutting tools adapted to the hardness of the soil material.

Für das Abtragen von härterem Bodenmaterial kann es nach einer weiteren Ausführungsform der Erfindung vorteilhaft sein, dass die Abtragseinrichtung eine Schlitzwandfräse mit einem Fräsrahmen aufweist, an dessen Unterseite Fräsräder drehend um eine horizontale Drehachse gelagert und antreibbar sind. Die Fräsräder können hierbei neben dem Abtragen von Bodenmaterial auch der Mischung des abgetragenen Bodenmaterials mit einer Zusatzmasse, insbesondere mit Bindemittelsuspension, unmittelbar an der Bohrlochsohle selbst dienen. Die Homogenisierung der Bodenmischung kann durch den drehbaren Antrieb der Fräsräder, welche bevorzugt eine paarweise gegenläufige Drehrichtung aufweisen, gewährleistet werden. Die Fräsräder weisen typischerweise Werkzeughalterungen und Schneidwerkzeuge auf, wobei Letztere Abtragszähne sein können und dabei in Reihen auf dem Fräsrad angeordnet sein können. Die Anzahl an Fräsrädern ist weiter typischerweise gerade, insbesondere aber nicht notwendigerweise können zwei oder vier Fräsräder in mindestens einer horizontalen Ebene vorgesehen sein.For the removal of harder soil material, it may be advantageous according to a further embodiment of the invention that the removal device has a trench wall cutter with a milling frame, mounted on the underside of cutting wheels rotating about a horizontal axis of rotation and can be driven. The cutting wheels can serve here in addition to the removal of soil material and the mixture of the removed soil material with an additional mass, especially with binder suspension, directly to the bottom hole itself. The homogenization of the soil mixture can be ensured by the rotatable drive of the cutting wheels, which preferably have a pairwise opposite direction of rotation. The cutting wheels typically have tool holders and cutting tools, the latter can be Abtragszähne and can be arranged in rows on the cutting wheel. The number of cutting wheels is further typically straight, but especially but not necessarily two or four cutting wheels may be provided in at least one horizontal plane.

Nach einer Weiterbildung der Erfindung kann sich ein besonders zweckmäßiger Betrieb dadurch ergeben, dass ein fahrbarer Grundwagen vorgesehen ist, an welchem zum Halten der Abtragseinrichtung ein vertikaler Mast oder ein Auslegerarm angeordnet ist. Grundsätzlich weist ein Tiefbaugerät eine Trägereinrichtung auf, an der insbesondere die Abtragseinrichtung vertikal verstellbar gelagert sein kann. Dabei kann die Trägereinrichtung einen fahrbaren Grundwagen, insbesondere ein Raupenfahrzeug, aufweisen, an welchem ein vertikaler Mast oder ein Auslegerarm angeordnet sein kann, wobei an diesem die Abtragseinrichtung gehaltert und vertikal verstellbar angeordnet sein kann. Eine Positionierung und Ausrichtung der Abtragseinrichtung zur Herstellung eines Gründungselementes im Baugrund kann somit durch ein Verfahren des Grundwagens und/oder ein neu Ausrichten des Mastes oder des Auslegerarmes mit der Abtragseinrichtung ermöglicht werden. Grundsätzlich können somit eine Vielzahl von Gründungselementen in beliebiger Herstellabfolge, insbesondere in sich überschneidender Art und Weise, abgeteuft werden.According to a development of the invention, a particularly expedient operation can result from the fact that a mobile base carriage is provided on which a vertical mast or a cantilever arm is arranged for holding the removal device. Basically, a civil engineering device on a support device on which in particular the removal device can be mounted vertically adjustable. In this case, the carrier device may have a mobile base carriage, in particular a tracked vehicle, on which a vertical mast or a cantilever arm can be arranged, wherein the removal device can be mounted on it and arranged to be vertically adjustable. A positioning and alignment of the removal device for the preparation of a foundation element in the ground can thus be made possible by a method of the base carriage and / or a new alignment of the mast or the boom with the removal device. In principle, therefore, a plurality of foundation elements in any manufacturing sequence, in particular in overlapping manner, can be sunk.

Ein weiterer Aspekt der Erfindung, in Ausgestaltung der erfindungsgemäßen Auffangeinrichtung für ein Tiefbaugerät ist dadurch gekennzeichnet, dass mindestens zwei Wände vorgesehen sind, welche zum Bilden einer Aufnahmekammer für die Bodenmischung miteinander verbunden sind. Eine hierfür typischerweise geeignete Wand weist eine Länge von ungefähr 1 m bis ungefähr 5 m und eine Höhe von ungefähr 0,3 m bis ungefähr 1,5 m auf. Durch das Vorsehen von mindestens zwei miteinander verbundenen Wänden und einem zumindest teilweise offenen Boden, wird eine Aufnahmekammer für die von der Abtragseinrichtung verdrängten und an der Oberfläche ausgetretenen Bodenmischung gebildet. Die Auffangeinrichtung ist an der Oberseite des Lochs und/oder an der Trägereinrichtung des Tiefbaugerätes angeordnet, dabei insbesondere aber nicht notwendigerweise an einer für die Abtragseinrichtung vorgesehenen Führungseinrichtung angeordnet, wobei so zusammen mit der Positionierung der Abtragseinrichtung am abzuteufenden Loch auch die Positionierung der Auffangeinrichtung um das abzuteufende Loch in effizienter Weise ermöglicht wird. Vorzugsweise ist die Auffangeinrichtung kastenförmig mit vier seitlichen Wänden.Another aspect of the invention, in an embodiment of the collecting device according to the invention for a civil engineering device is characterized in that at least two walls are provided, which are connected to form a receiving chamber for the soil mixture. A typically suitable wall has a length of about 1 m to about 5 m and a height of about 0.3 m to about 1.5 m. By providing at least two interconnected walls and an at least partially open bottom, a receiving chamber for the displaced by the removal device and leaked on the surface soil mixture is formed. The collecting device is arranged on the upper side of the hole and / or on the carrier device of the civil engineering device, but in particular not necessarily arranged on a guide device provided for the removal device, whereby, together with the positioning of the removal device at the hole to be scanned, the positioning of the collecting device around the allowed to be rejected hole in an efficient manner. Preferably, the catcher is box-shaped with four lateral walls.

Grundsätzlich kann die Auffangeinrichtung eine beliebige Anordnung von Wänden aufweisen, welche die austretende Bodenmischung aufnehmen sollen. Eine besonders bevorzugte Ausführungsform der Erfindung kann darin bestehen, dass die mindestens zwei Wände konisch zueinander angeordnet sind, wobei eine sich nach oben erweiternde trichterförmige Aufnahmekammer gebildet wird. Die konische Anordnung der Wände an einer Vorder- und Rückseite der Auffangeinrichtung kann ein gezieltes Rückführen der ausgetretenen Bodenmischung beim Herausziehen der Abtragseinrichtung unterstützen. Zudem wird das Aufnahmevolumen der Aufnahmekammer durch die sich nach oben erweiternde trichterförmige Ausgestaltung zusätzlich erhöht.In principle, the collecting device can have any desired arrangement of walls which are intended to receive the emerging soil mixture. A particularly preferred embodiment of the invention may consist in that the at least two walls are arranged conically with each other, wherein an upwardly widening funnel-shaped receiving chamber is formed. The conical arrangement of the walls at a front and a back of the collecting device can support a targeted recycling of the leaked soil mixture when removing the removal device. In addition, the receiving volume of the receiving chamber is additionally increased by the upwardly flared funnel-shaped configuration.

Eine weitere vorteilhafte Ausführungsform der Auffangeinrichtung kann nach der Erfindung darin bestehen, dass mindestens zwei Wände gegenüberliegend zueinander angeordnet sind und dass die mindestens zwei Wände über mindestens eine Gestängeeinrichtung verbunden sind, welche in einem Seitenbereich zwischen den gegenüberliegenden Wänden angeordnet ist. Durch eine gegenüberliegende Anordnung der Wände, insbesondere unter Ausgestaltung einer Vorder- und Rückseite der Auffangeinrichtung, wird die heraustretende Bodenmischung durch die Wände in begrenzender Weise gehalten und an einem Abfließen gehindert. Zur Stabilisierung und Aussteifung der Auffangeinrichtung kann mindestens eine Gestängeeinrichtung vorgesehen sein, welche die mindestens zwei Wände miteinander verbinden kann. Durch Anordnung der Gestängeeinrichtung in einem Seitenbereich zwischen zwei gegenüberliegenden Wänden wird das Aufnahmevolumen der Aufnahmekammer nur geringfügig eingeschränkt. Die kraftschlüssige Verbindung kann insbesondere gelenkig und lösbar sein, so dass eine einfache Montage und Demontage der Auffangeinrichtung ermöglicht ist.A further advantageous embodiment of the collecting device can according to the invention consist in that at least two walls opposite each other are arranged and that the at least two walls are connected via at least one linkage device which is arranged in a side region between the opposite walls. By an opposing arrangement of the walls, in particular with the design of a front and back of the catcher, the emerging soil mixture is held by the walls in a limiting manner and prevented from flowing. To stabilize and stiffen the collecting device, at least one linkage device can be provided, which can connect the at least two walls to one another. By arranging the linkage device in a side region between two opposite walls, the receiving volume of the receiving chamber is only slightly limited. The non-positive connection can in particular be articulated and detachable, so that a simple assembly and disassembly of the collecting device is made possible.

In besonders vorteilhafter Ausgestaltung der erfindungsgemäßen Auffangeinrichtung ist vorgesehen, dass zwei Gestängeeinrichtungen vorgesehen sind, welche jeweils in einem Seitenbereich angeordnet sind. Grundsätzlich können Gestängeeinrichtungen zur Versteifung der Auffangeinrichtung in beliebiger Anzahl vorhanden sein. Durch das Vorsehen von bereits zwei Gestängeeinrichtungen kann eine ausreichende Stabilisierung der Auffangeinrichtung erzielt werden und gleichzeitig durch deren Anordnung in einem Seitenbereich der Auffangeinrichtung das Volumen der Aufnahmekammer nur geringfügig eingeschränkt werden.In a particularly advantageous embodiment of the collecting device according to the invention it is provided that two linkage devices are provided, which are each arranged in a side region. Basically, linkage devices for stiffening the collecting device may be present in any number. By providing already two linkage devices, a sufficient stabilization of the collecting device can be achieved and, at the same time, the arrangement of the arrangement in a side region of the collecting device only marginally limits the volume of the receiving chamber.

Eine weitere besonders vorteilhafte Ausgestaltung der erfindungsgemäßen Auffangeinrichtung kann darin bestehen, dass die Gestängeeinrichtung zwei Diagonalstreben aufweist, welche kreuzweise zueinander angeordnet sind. Grundsätzlich kann eine beliebige Anzahl von Streben einer Gestängeeinrichtung in grundsätzlich beliebiger Weise zur Versteifung der Auffangeinrichtung angeordnet sein. Eine kreuzweise Anordnung von zwei Diagonal- oder Querstreben kann jedoch eine besonders hohes Maß an Aussteifung der Auffangeinrichtung bewirken. Das Vorsehen von zusätzlichen Querstreben in horizontaler Ausrichtung zur weiteren Versteifung kann ebenfalls vorgesehen sein.Another particularly advantageous embodiment of the collecting device according to the invention may consist in that the linkage device comprises two diagonal struts, which are arranged crosswise to each other. In principle, any desired number of struts of a linkage device can be arranged in basically any way for stiffening the catching device. However, a crosswise arrangement of two diagonal or transverse struts can cause a particularly high degree of stiffening of the catcher. The provision of additional transverse struts in horizontal alignment for further stiffening may also be provided.

Grundsätzlich kann eine beliebige Einrichtung zur Längenänderung der Diagonalstrebe ausgewählt werden, insbesondere auch hydraulische Zylinder oder eine teleskopierbare Einrichtung. In Weiterbildung der Erfindung kann sich ein besonders zweckmäßiger Betrieb für die Auffangeinrichtung dadurch ergeben, dass mindestens eine Diagonalstrebe einen Teleskopbereich aufweist, mit welchem eine Länge der Diagonalstrebe veränderbar ist. Durch ein Verstellen des Teleskopbereichs kann sich die Länge der gesamten Diagonalstrebe und somit auch das Aufnahmevolumen der Auffangkammer ändern. Der in seiner länglichen Ausdehnung verstellbare Teleskopbereich der Diagonalstrebe kann eine variable Anpassung des Aufnahmevolumens an das Volumen der austretenden Bodenmischung erlauben. Die Auffangeinrichtung kann somit für unterschiedliche Verdrängungsvolumina, welche insbesondere in Abhängigkeit zur Teufe und zum Volumen der Abtragseinrichtung stehen, eingesetzt werden. Darüber hinaus kann vorgesehen sein, dass die Auffangeinrichtung auch in einem unteren Bereich durch eine Längenänderung der Diagonalstreben, ähnlich einer Greifschaufel zusammenziehbar und/oder schließbar ist. Es kann auch ein Neigungswinkel der Seitenwände eingestellt werden.In principle, any device for changing the length of the diagonal strut can be selected, in particular also hydraulic cylinders or a telescopic strut Facility. In a further development of the invention, a particularly expedient operation for the collecting device can result from the fact that at least one diagonal strut has a telescopic area, with which a length of the diagonal strut is variable. By adjusting the telescope area, the length of the entire diagonal strut and thus also the receiving volume of the collecting chamber can change. The telescopic region of the diagonal strut, which can be adjusted in its elongated extent, can allow a variable adaptation of the receiving volume to the volume of the exiting soil mixture. The collecting device can thus be used for different displacement volumes, which are in particular dependent on the depth and the volume of the ablation device. In addition, it can be provided that the collecting device in a lower region by a change in length of the diagonal struts, similar to a gripper bucket contractible and / or closable. It can also be set a tilt angle of the side walls.

Eine besonders vorteilhafte Ausführungsform der Auffangeinrichtung mit dem erfindungsgemäß vorgesehenen Teleskopbereich kann nach der Erfindung darin bestehen, dass der Teleskopbereich mindestens ein männliches Gewindeelement und mindestens ein weibliches Gewindeelement umfasst. Dabei kann das männliche Gewindeelement um die Gewindeachse drehfest mit der Wand der Auffangeinrichtung verbunden sein und das weibliche Gewindeelement kann mit zusätzlichen Konstruktionselementen versehen sein, welche es ermöglichen können, durch Krafteinwirkung auf diese, vorzugsweise mittels eines Werkzeuges, ein Verdrehen des weiblichen Gewindeelements auf dem männlichen Gewindeelement und somit eine Längenänderung in Richtung der Gewindeachse und somit auch eine Längenänderung der Diagonalstrebe selbst zu bewirken. Alternativ können als Gestängeelemente auch Stellzylinder vorgesehen sein, welche etwa eine hydraulische Verstellung der Wände ermöglichen können.According to the invention, a particularly advantageous embodiment of the collecting device with the telescopic area provided according to the invention may consist in that the telescopic area comprises at least one male threaded element and at least one female threaded element. In this case, the male threaded member about the threaded axis rotatably connected to the wall of the catcher and the female threaded member may be provided with additional structural elements, which may make it possible, by means of force on this, preferably by means of a tool, a twisting of the female threaded member on the male Threaded element and thus cause a change in length in the direction of the threaded axis and thus also a change in length of the diagonal strut itself. Alternatively, as a rod elements also actuating cylinder may be provided, which may allow about a hydraulic adjustment of the walls.

Eine besonders zweckmäßige Ausgestaltung der erfindungsgemäßen Auffangeinrichtung kann darin bestehen, dass die Diagonalstreben gelenkig mit den Wänden verbunden sind. Die gelenkige Verbindung der Diagonalstreben mit den Wänden kann eine spannungsfreie Änderung der konischen Stellung der Wände bei gleichbleibend kraftschlüssiger Verbindung bewirken. Die Gelenke können zudem auch als lösbare Verbindungselemente ausgebildet sein. Durch die teilweise lösbaren und/oder gelenkigen Verbindungen kann die Auffangeinrichtung in besonders effizienter und für einen Transport platzsparender Weise zusammenklappbar oder demontierbar sein. Zur Erhöhung der Steifigkeit der Auffangeinrichtung kann zudem eine Verbindung der Diagonalstreben selbst vorgesehen sein.A particularly advantageous embodiment of the collecting device according to the invention may consist in that the diagonal braces are hingedly connected to the walls. The articulated connection of the diagonal struts with the walls can cause a tension-free change in the conical position of the walls while maintaining a force-locking connection. The joints can also as be formed releasable fasteners. Due to the partially detachable and / or articulated connections, the collecting device may be collapsible or removable in a particularly efficient and space-saving manner for transport. In order to increase the rigidity of the collecting device may also be provided a compound of the diagonal braces themselves.

Grundsätzlicherweise kann die erfindungsgemäße Auffangeinrichtung beliebig am Tiefbaugerät und/oder an der Oberseite des Lochs angeordnet sein. Als besonders zweckmäßig kann nach einer Weiterbildung der Erfindung angesehen sein, dass eine Verbindungseinrichtung zum Verbinden mit dem Tiefbaugerät vorgesehen ist. Hierbei kann insbesondere vorgesehen sein, dass die Auffangeinrichtung mittels der Verbindungseinrichtung an die Trägereinrichtung des Tiefbaugerätes angebracht ist, wobei hierfür insbesondere aber nicht notwendigerweise eine Anbringung an einer für die Abtragseinrichtung vorgesehenen Führungseinrichtung erfolgen kann. Hierfür können an der Auffangeinrichtung und/oder an der Trägereinrichtung, insbesondere an der Führungseinrichtung, entsprechende Verbindungskonstruktionen vorgesehen sein, welche vorzugsweise durch an der Auffangeinrichtung angebrachte Gabelköpfe sowie an der Verbindungseinrichtung vorgesehene Aufnahmelöcher und deren Verbindung mit gesicherten Bolzen ausgebildet sein können. Die Sicherung der Bolzen kann insbesondere mittels Federstecker oder anderer Splintformen erfolgen. Des Weiteren können die Wände der Auffangeinrichtung mit Abschlussprofilen zur Halterung der Verbindungskonstruktionen versehen sein, welche darüber hinaus auch der Befestigung der Diagonalstreben oder zusätzlicher Streben, insbesondere der Querstreben, dienen können.In principle, the collecting device according to the invention can be arranged as desired on the civil engineering device and / or on the upper side of the hole. According to a development of the invention, it may be considered particularly expedient that a connection device is provided for connection to the civil engineering device. In this case, it can be provided, in particular, that the collecting device is attached to the carrier device of the civil engineering device by means of the connecting device, but in particular, but not necessarily, attachment to a guide device provided for the removal device can take place. For this purpose, corresponding connecting structures may be provided on the collecting device and / or on the carrier device, in particular on the guide device, which may preferably be formed by provided on the collecting device clevises and provided on the connecting means receiving holes and their connection with secured bolts. The securing of the bolt can be done in particular by means of spring pin or other splint shapes. Furthermore, the walls of the collecting device can be provided with end profiles for holding the connecting structures, which can also serve for fastening the diagonal struts or additional struts, in particular the transverse struts.

Hinsichtlich des Verfahrens ist ein wesentlicher Aspekt der Erfindung zur Lösung der eingangs genannten Aufgabe, dass beim Erstellen des Gründungselementes aus dem Loch im Boden Bodenmischung austritt, welche in einer Aufnahmekammer einer Auffangeinrichtung an einer Oberseite des Lochs aufgefangen wird. Durch das Auffangen der austretenden Bodenmischung an einer Oberseite des Lochs wird vermieden, dass die austretenden Bodenmischung unkontrolliert vom Loch abfließt und einer möglichen Rückführung zum Loch nicht mehr zur Verfügung steht.With regard to the method is an essential aspect of the invention for solving the above-mentioned problem that emerges when creating the foundation element from the hole in the soil soil mixture, which is collected in a receiving chamber of a collecting device at an upper side of the hole. By collecting the exiting soil mixture at an upper side of the hole is avoided that the exiting soil mixture uncontrollably flows from the hole and a possible return to the hole is no longer available.

Ein weiterer Aspekt des erfindungsgemäßen Verfahrens kann darin bestehen, dass beim Herausziehen der Abtragseinrichtung aus dem Loch Bodenmischung aus der Aufnahmekammer in das Loch rückgeführt wird. Die beim Abteufen ausgetretene Bodenmischung, welche in der Auffangeinrichtung in kontrollierter Weise und gesammelt vorliegt, kann beim Herausziehen der Abtragseinrichtung zur Kompensation des verdrängten Volumens verwendet werden. Durch die trichterförmige Ausbildung der Auffangeinrichtung, welche durch die konische Stellung der Wände gegeben ist, kann eine zumindest teilweise selbsttätigende Rückführung der Bodenmischung aus der Auffangeinrichtung wieder in das Loch durch Zurückgleiten gewährleistet sein.Another aspect of the method according to the invention may consist in that when removing the removal device from the hole soil mixture from the Recording chamber is returned to the hole. The soil mixture which has escaped during the drilling and which is present in a controlled manner in a collecting manner in the collecting device can be used to extract the displacing volume when the removal device is withdrawn. Due to the funnel-shaped design of the collecting device, which is given by the conical position of the walls, an at least partially automatic return of the soil mixture from the collecting device can be ensured again in the hole by sliding back.

Erste Versuche haben ergeben, dass durch das kontrollierte Auffangen und die gezielte Rückführung, insbesondere während dem Homogenisierungsvorgang, die nach fertiger Erstellung eines Gründungselementes an der Oberfläche verbleibende und zu deponierende Bodenmischung, welche dem Loch nicht mehr rückführbar ist, um ungefähr 10% bis 40%, insbesondere 20% bis 30%, reduziert werden kann. Bei steigenden Entsorgungskosten für zu deponierende Bodenmischung und großbauprojekttypischem Bohrgutanfall von mehreren 10.000 m3 können bei derzeitigen Deponiekosten von etwa 20 EUR/m3 erhebliche Kosten eingespart werden.Initial tests have shown that by the controlled collection and the targeted recycling, especially during the homogenization process, the remaining after the creation of a foundation element on the surface and to be deposited soil mixture, which is the hole no longer traceable, by about 10% to 40% , in particular 20% to 30%, can be reduced. With increasing disposal costs for soil mix to be landfilled and large-scale project-specific cuttings of several 10,000 m 3 can be saved at current landfill costs of about 20 EUR / m 3 significant cost.

Gründungselemente im Sinne der Erfindung sind nicht nur Baulast abtragende Element oder Schlitz- oder Dichtwände, sondern grundsätzlich alle Bauwerke, welche im Boden aus einer Bodenmischung, insbesondere einem sogenannten Bodenmörtel, hergestellt werden.Foundation elements in the context of the invention are not only load-bearing element or slot or sealing walls, but basically all structures which are made in the soil from a soil mixture, in particular a so-called soil mortar.

Die Erfindung wird nachfolgend anhand von zwei bevorzugten Ausführungsbeispielen weiter erläutert, welche schematisch in den beigefügten Zeichnungen dargestellt sind. In den Zeichnungen zeigen:

Fig. 1:
eine Seitenansicht der erfindungsgemäßen Auffangeinrichtung in einer ersten Ausführungsform;
Fig. 2:
eine weitere Seitenansicht der Auffangeinrichtung von Fig. 1, um 90° gedreht;
Fig. 3:
eine perspektivische Ansicht der Auffangeinrichtung von Fig. 1;
Fig. 4:
eine perspektivische Ansicht der Auffangeinrichtung in einer zweiten Ausführungsform; und
Fig. 5:
eine Seitensicht des erfindungsgemäßen Tiefbaugerätes mit einer erfindungsgemäßen Auffangeinrichtung.
The invention will be further elucidated on the basis of two preferred exemplary embodiments, which are illustrated schematically in the attached drawings. In the drawings show:
Fig. 1:
a side view of the collecting device according to the invention in a first embodiment;
Fig. 2:
another side view of the catcher of Fig. 1 , turned by 90 degrees;
3:
a perspective view of the collecting device of Fig. 1 ;
4:
a perspective view of the collecting device in a second embodiment; and
Fig. 5:
a side view of the civil engineering device according to the invention with a collecting device according to the invention.

Eine erste Ausführungsform der erfindungsgemäßen Auffangeinrichtung 10 wird nachfolgend im Zusammenhang mit den Figuren 1 bis 3 erläutert. Die Auffangeinrichtung 10 weist zwei Wände 20 auf, welche typischerweise eine ungefähre Breite von 2 m und eine ungefähre Höhe von 0,5 m haben. Im Inneren der zwei Wände 20 ist eine Aufnahmekammer 12 gebildet. Die Aufnahmekammer 12 ist an einer Vorderseite 15 und an einer Rückseite 16 der Auffangeinrichtung 10 durch je eine Wand 20 begrenzt und seitlich sowie unten und oben offen. Die Aufnahmekammer 12 beschreibt ein Volumen zur Aufnahme von Bodenmaterial, welches durch die beiden Wände 20 aufgespannt ist. In den beiden Seitenbereichen 14 der Wände 20 sind Gestängeeinrichtungen 30 angeordnet. Weiter ist in strichlierter Linienführung die Verbindungseinrichtung 50 angedeutet, welche die Auffangeinrichtung 10 mit dem in den Figuren 1 bis 3 nicht dargestellten Tiefbaugerät 100 verbindet. Ebenfalls nicht dargestellt sind die Abtragseinrichtung 60, welche durch die Verbindungseinrichtung 50 und die Auffangeinrichtung 10 während des Abtragens von Bodenmaterial hindurchragt, sowie die Trägereinrichtung 70 des Tiefbaugerätes 100.A first embodiment of the collecting device 10 according to the invention will be described below in connection with FIGS FIGS. 1 to 3 explained. The catcher 10 has two walls 20 which typically have an approximate width of 2m and an approximate height of 0.5m. Inside the two walls 20, a receiving chamber 12 is formed. The receiving chamber 12 is limited at a front side 15 and at a rear side 16 of the collecting device 10 by a respective wall 20 and laterally and open at the top and bottom. The receiving chamber 12 describes a volume for receiving soil material, which is spanned by the two walls 20. In the two side regions 14 of the walls 20 linkage devices 30 are arranged. Next, the connecting device 50 is indicated in dashed lines, which the collecting device 10 with the in the FIGS. 1 to 3 Civil engineering apparatus 100, not shown, connects. Also not shown are the removal device 60, which protrudes through the connecting device 50 and the collecting device 10 during the removal of soil material, and the support means 70 of the civil engineering device 100th

Die Auffangeinrichtung 10 ist durch vier Gabelköpfe 52, welche paarweise an oberen Abschlussprofilen 22 der Wände 20 gehaltert sind und mittels Bolzen 53, mit der Verbindungseinrichtung 50 verbunden. Die Bolzen 53 sind dabei mit Federsteckern 54 gesichert und mit Griffen versehen. Für die Aufnahme der Bolzen 53 sind dabei an der Verbindungseinrichtung 50 verschiedene Aufnahmelöcher 51 vorgesehen, welche zwei mögliche konische Stellungen der Wände 20 vordefinieren, wobei diese mittels einer Längenänderung der Diagonalstreben 32, respektive deren Teleskopbereiche 34, eingerichtet werden.The collecting device 10 is connected by four clevises 52, which are mounted in pairs on upper end profiles 22 of the walls 20 and connected by bolts 53, with the connecting device 50. The bolts 53 are secured with spring connectors 54 and provided with handles. For receiving the bolts 53, different receiving holes 51 are provided on the connecting device 50, which predefine two possible conical positions of the walls 20, wherein these are adjusted by means of a change in length of the diagonal braces 32, respectively their telescopic regions 34.

Die in diesem ersten Ausführungsbeispiel vorgesehenen zwei Wände 20 der Auffangeinrichtung 10 sind in Fig. 2 in der ersten konischen Stellung und in strichlierter Darstellung in der zweiten konischen Stellung gezeigt. In erster Stellung schließen beide Wände 20 einen Winkel von ungefähr 20° ein und in zweiter Stellung einen Winkel von ungefähr 40°. An den Wänden 20 sind in einem Seitenbereich 14 Gelenke 21 vorgesehen um die Gestängeeinrichtungen 30 mit den Wänden 20 schwenkbar zu verbinden.The two walls 20 of the collecting device 10 provided in this first exemplary embodiment are shown in FIG Fig. 2 shown in the first conical position and in dashed representation in the second conical position. In the first position, both walls 20 enclose an angle of approximately 20 ° and in the second position an angle of approximately 40 °. On the walls 20 are in a side region 14 joints 21 provided to pivotally connect the linkage means 30 to the walls 20.

Die in diesem ersten Ausführungsbeispiel vorgesehenen zwei Gestängeeinrichtungen 30 weisen jeweils zwei Diagonalstreben 32 und jeweils eine Querstrebe 33 auf. Dabei verbinden die Diagonalstreben 32 die erste Wand 20 mit oberen und unteren Gelenken 21 mit der zweiten Wand 20 mit entgegengesetzten unteren und oberen Gelenken 21. Die Gelenke 21 sind dabei so ausgebildet, dass sie ein nach außen und innen Schwenken der Wände 20 zulassen. Um das Schwenken zu ermöglichen und um das Volumen der Aufnahmekammer 12 zu erhöhen oder zu verkleinern, sind Teleskopbereiche 34 in den Diagonalstreben 32 oberhalb eines Kreuzungsbereiches der Gestängeeinrichtung, an welcher beide Diagonalstreben 32 miteinander verbunden sind, vorgesehen. Die beiden Teleskopbereiche 34 weisen zwei männliche Gewindeelemente 36 auf, welche durch zwei miteinander verbundenen weiblichen Gewindeelementen 38 gehalten sind. Durch eine Drehung der beiden miteinander verbundenen weiblichen Gewindeelemente 38 um die Achse der männlichen Gewindeelemente 36, welche parallel zur Achse der Diagonalstrebe 32 ist, können die Diagonalstreben 32 verlängert oder verkürzt werden. Da im vorliegenden Ausführungsbeispiel die untere Fläche der Aufnahmekammer 12 durch die Querstreben 33 eingezwängt ist, bewirkt die Längenänderung der Diagonalstreben 32 lediglich eine Vergrößerung oder Verkleinerung der oberen Fläche der Aufnahmekammer 12. Hierbei sind die Querstreben 33 in ihrer Länge nicht änderbar und halten die beiden Wände 20 an ihren Unterseiten an unteren Abschlussprofilen 22. Die Länge der Querstreben 33 beträgt im Ausführungsbeispiel ungefähr 1 m.The two linkage devices 30 provided in this first embodiment each have two diagonal struts 32 and one transverse strut 33 each. The diagonal braces 32 connect the first wall 20 with upper and lower joints 21 with the second wall 20 with opposite lower and upper joints 21. The joints 21 are designed so that they allow an outward and inward pivoting of the walls 20. To enable pivoting and to increase or decrease the volume of the receiving chamber 12, telescopic portions 34 are provided in the diagonal struts 32 above an intersection of the linkage means at which both diagonal struts 32 are interconnected. The two telescopic regions 34 have two male threaded elements 36, which are held by two interconnected female threaded elements 38. By rotating the two interconnected female threaded members 38 about the axis of the male threaded members 36, which is parallel to the axis of the diagonal strut 32, the diagonal struts 32 can be lengthened or shortened. Since in the present embodiment, the lower surface of the receiving chamber 12 is constrained by the cross braces 33 causes the change in length of the diagonal braces 32 only an enlargement or reduction of the upper surface of the receiving chamber 12. Here, the cross braces 33 are not changeable in length and hold the two walls 20 at their lower sides at lower end profiles 22. The length of the transverse struts 33 in the exemplary embodiment is approximately 1 m.

Eine zweite Ausführungsform der erfindungsgemäßen Auffangeinrichtung 10 wird nachfolgend im Zusammenhang mit der Fig. 4 erläutert. Die Auffangeinrichtung 10 weist, wie bereits in der ersten Ausführungsform, zwei Wände 20 auf, welche in dieser Ausführungsform typischerweise eine ungefähre Breite von 2,5 m und eine ungefähre Höhe von 0,8 m haben. Eine Aufnahmekammer 12 ist durch die zwei Wände 20 begrenzt und seitlich sowie unten und oben offen. In den beiden Seitenbereichen 14 der Wände 20 sind Gestängeeinrichtungen 30 angeordnet.A second embodiment of the collecting device 10 according to the invention is described below in connection with the Fig. 4 explained. The catcher 10, as in the first embodiment, has two walls 20 which in this embodiment typically have an approximate width of 2.5m and an approximate height of 0.8m. A receiving chamber 12 is bounded by the two walls 20 and open laterally and downwardly and upwardly. In the two side regions 14 of the walls 20 linkage devices 30 are arranged.

Die Auffangeinrichtung 10 ist durch vier Gabelköpfe 52, welche paarweise an den Wänden 20 angebracht sind und mittels Bolzen 53, mit der Verbindungseinrichtung 50 verbunden. Die Verbindungseinrichtung 50, welche in der Fig. 4 nicht vollständig dargestellt ist, ist durch vier Konstruktionselemente der Verbindungseinrichtung 50 angedeutet, welche Aufnahmelöcher 51 für die Aufnahme der Bolzen 53 aufweisen.The catcher 10 is connected by four clevises 52, which are mounted in pairs on the walls 20 and by means of bolts 53, with the connecting device 50 connected. The connecting device 50, which in the Fig. 4 is not fully illustrated, is indicated by four construction elements of the connecting device 50, which have receiving holes 51 for receiving the bolt 53.

Die in diesem zweiten Ausführungsbeispiel vorgesehenen zwei Wände 20 der Auffangeinrichtung 10 sind in Fig. 4 in einer konischen Stellung gezeigt. An den Wänden 20 sind in einem Seitenbereich 14 Gelenke 21 vorgesehen, um die Gestängeeinrichtungen 30 mit den Wänden 20 schwenkbar zu verbinden. Die zwei Gestängeeinrichtungen 30 weisen jeweils zwei Streben 31 auf, welche aus je einer Diagonalstrebe 32 und einer Querstrebe 33 bestehen. Die Anordnung einer weiteren kreuzweise angeordneten Diagonalstrebe 32 mittels weiterer Gelenke an den Wänden 20 ist zusätzlich, insbesondere für eine erhöhte Versteifung der Auffangeinrichtung 10, möglich. Die Diagonalstreben 32 verbinden die Wände 20 mit einem oberen Gelenk 21 und einem entgegengesetzten unteren Gelenk 21 auf der einen Seite und in entgegengesetzter Anordnung mit einem unteren Gelenk 21 und einem entgegengesetzten oberen Gelenk 21 auf der anderen Seite. Um das Schwenken zu ermöglichen und um das Volumen der Aufnahmekammer 12 zu erhöhen oder zu verkleinern, sind Teleskopbereiche 34 in den Diagonalstreben 32 und in den Querstreben 33 vorgesehen. Die Teleskopbereiche 34 weisen vordefinierte Einrastpositionen auf, welche mittels Schraubenverbindungen einrastend gehalten werden. In diesem Ausführungsbeispiel ist vorgesehen, durch Längenänderung der Streben 31 eine Vergrößerung oder Verkleinerung der unteren Fläche der Aufnahmekammer 12 zu ermöglichen. Hierbei sind alle Streben 31 in ihrer Länge änderbar, wodurch einerseits eine Volumenänderung der Aufnahmekammer 12 und andererseits eine Anpassung der Auffangeinrichtung 10 an die Größe der Abtragseinrichtung 60, insbesondere deren horizontale Ausdehnung möglich ist. Hierdurch kann auch die untere Fläche der Aufnahmekammer 12 an die Größe des Loches und an den Austrittsbereich der Bodenmischung angepasst werden.The two walls 20 of the collecting device 10 provided in this second exemplary embodiment are shown in FIG Fig. 4 shown in a conical position. On the walls 20, joints 21 are provided in a side region 14 for pivotally connecting the linkage means 30 to the walls 20. The two linkage devices 30 each have two struts 31, which each consist of a diagonal strut 32 and a transverse strut 33. The arrangement of a further crosswise arranged diagonal strut 32 by means of further joints on the walls 20 is additionally possible, in particular for increased stiffening of the catching device 10. The diagonal struts 32 connect the walls 20 to an upper hinge 21 and an opposite lower hinge 21 on one side and in opposite arrangement with a lower hinge 21 and an opposite upper hinge 21 on the other side. In order to enable the pivoting and to increase or decrease the volume of the receiving chamber 12, telescopic areas 34 are provided in the diagonal struts 32 and in the transverse struts 33. The telescopic areas 34 have predefined latching positions, which are latched by means of screw connections. In this embodiment, it is provided to allow by changing the length of the struts 31, an enlargement or reduction of the lower surface of the receiving chamber 12. In this case, all struts 31 are changeable in length, whereby on the one hand a change in volume of the receiving chamber 12 and on the other hand, an adaptation of the collecting device 10 to the size of the removal device 60, in particular their horizontal extent is possible. In this way, the lower surface of the receiving chamber 12 can be adapted to the size of the hole and to the outlet region of the soil mixture.

Fig. 5 zeigt das erfindungsgemäße Tiefbaugerät 100 mit einem fahrbaren Grundwagen 101, welcher einen Raupenantrieb aufweist und oberhalb des Antriebes um eine vertikale Achse drehbar ist. Neben dem fahrbaren Grundwagen 101 weist die Trägereinrichtung 70 des Tiefbaugerätes 100 insbesondere auch einen vertikalen Mast 72 auf, an welchem die Abtragseinrichtung 60 vertikal verstellbar angebracht ist. Unterhalb eines Schlittens 74, welcher an einer Führungsschiene des Mastes 72 vertikal verfahrbar ist, ist die Abtragseinrichtung 60, welche durch die Auffangeinrichtung 10 hindurchragt, angebracht. Die Auffangeinrichtung 10 ist dabei mit der Verbindungseinrichtung 50 verbunden, durch welche die Abtragseinrichtung 60 ebenfalls hindurchragt. Die Verbindungseinrichtung 50 verbindet die Auffangeinrichtung 10 mit der Trägereinrichtung 70 des Tiefbaugeräts 100, insbesondere mit dem Mast 72. Die Auffangeinrichtung 10 und die Verbindungseinrichtung 50 können somit ortsfest über dem Loch verbleiben, während die Abtragseinrichtung 60 durch ein Verfahren des Schlittens 74 am Mast 72 das Abteufen des Loches ermöglicht und dabei ständig durch die Auffangeinrichtung 10 hindurchragt. Fig. 5 shows the civil engineering device 100 according to the invention with a movable base carriage 101, which has a caterpillar drive and is rotatable about a vertical axis above the drive. In addition to the mobile base cart 101, the carrier device 70 of the civil engineering device 100 in particular also has a vertical mast 72, on which the removal device 60 is mounted vertically adjustable. Below a carriage 74 which is vertically movable on a guide rail of the mast 72, the removal device 60, which protrudes through the catcher 10, mounted. The collecting device 10 is connected to the connecting device 50, through which the removal device 60 also protrudes. The connecting device 50 connects the collecting device 10 with the carrier device 70 of the civil engineering device 100, in particular with the mast 72. The collecting device 10 and the connecting device 50 can thus remain stationary over the hole, while the removal device 60 by a method of the carriage 74 on the mast 72 the Abteufen the hole allows while constantly protruding through the catcher 10.

Claims (14)

  1. Foundation engineering apparatus for producing a foundation element in the ground, having
    - a removal means (60) for producing a hole in the ground through the removal of ground material,
    - a carrier means (70), on which the removal means (60) is supported in a substantially vertically adjustable manner and can be moved into the ground, and
    - a feeding means for feeding an additional mass into the hole,
    - wherein the removal means (60) is designed to mix the removed ground material in the hole with the additional mass to a ground mixture in order to form the foundation element,
    characterized in that
    a collecting means (10) is provided which is arranged on an upper side of the hole and surrounds this at least partially, wherein a receiving chamber (12) for the ground mixture is formed.
  2. Foundation engineering apparatus according to claim 1,
    characterized in that
    the removal means (60) has at least one drilling and mixing auger which is driven in a rotatable manner about a vertical axis of rotation.
  3. Foundation engineering apparatus according to claim 1,
    characterized in that
    the removal means (60) has a diaphragm wall cutter with a cutter frame, on the underside of which cutting wheels are supported and can be driven in a rotating manner about a horizontal axis of rotation.
  4. Foundation engineering apparatus according to any one of claims 1 to 3,
    characterized in that
    a movable base carriage (101) is provided, on which a vertical mast (72) or an extension arm is arranged to hold the removal means (60).
  5. Collecting means for a foundation engineering apparatus according to any one of claims 1 to 4 having a removal means (60) for forming a hole in the ground,
    characterized in that
    at least two walls are provided which are connected to each other to form a receiving chamber (12) for a ground mixture,
    wherein the receiving means (10) surrounds the hole at least partially and is designed to collect displaced ground mixture from the hole.
  6. Collecting means according to claim 5,
    characterized in that
    the at least two walls (20) are arranged conically to each other, wherein a funnel-shaped receiving chamber (12) widening in the upward direction is formed.
  7. Collecting means according to claim 5 or 6,
    characterized in that
    at least two walls (20) are arranged opposite each other and
    in that the at least two walls (20) are connected by at least one linkage means (30) which is arranged in a lateral region (14) between the opposite walls (20).
  8. Collecting means according to claim 7,
    characterized in that
    two linkage means (30) are provided which are each arranged in a lateral region (14).
  9. Collecting means according to claim 7 or 8,
    characterized in that
    the linkage means (30) comprises struts (31), of which at least one strut (31) has a telescopic region (34), with which a length of the strut (31) can be changed.
  10. Collecting means according to claim 7 to 9,
    characterized in that
    the linkage means (30) has two diagonal struts (32) which are arranged crosswise to each other.
  11. Collecting means according to claim 9 or 10,
    characterized in that
    the telescopic region (34) comprises at least one male thread element (36) and at least one female thread element (38).
  12. Collecting means according to claim 10,
    characterized in that
    the diagonal struts (32) are connected in an articulated manner to the walls (20).
  13. Collecting means according to any one of claims 5 to 12,
    characterized in that
    a connecting means (50) for connection to the foundation engineering apparatus (100) is provided.
  14. Method for producing a foundation element in the ground, in which
    - by sinking a removal means (60) into the ground, ground material is removed and a hole is produced in the ground,
    - an additional mass is fed into the hole and
    - the removed ground material is mixed with the additional mass to a ground mixture, with which the foundation element is formed,
    characterized in that
    - during the production of the foundation element ground mixture leaks from the hole in the ground, which is collected in a receiving chamber (12) of a collecting means (10) on an upper side of the hole, and
    - in that during extraction of the removal means (60) from the hole ground mixture is fed back from the receiving chamber (12) into the hole.
EP15163502.6A 2015-04-14 2015-04-14 Civil engineering device and method for creating a foundation element in the ground Active EP3081699B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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EP3081699B1 true EP3081699B1 (en) 2018-01-31

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Publication number Priority date Publication date Assignee Title
FR3035112B1 (en) 2015-04-14 2020-05-29 Soprema PLANT-BASED BINDER, COMPOSITIONS COMPRISING THE SAME, AND METHOD FOR REDUCING THE QUANTITY OF OIL BITUMEN

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DE10308538C5 (en) * 2003-02-27 2014-11-06 Bauer Maschinen Gmbh Method of making a trench wall in the ground, trench wall cutter and trench wall cutter
US7604301B1 (en) * 2006-12-07 2009-10-20 Lang William J Dual axis grinder blender
EP2666911B1 (en) 2012-05-25 2015-09-23 Bauer Spezialtiefbau GmbH Method for producing a floor mortar wall in the floor

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