EP0900883A1 - Method and covering for making a column in the ground, which can carry loads from buildings or traffic - Google Patents

Method and covering for making a column in the ground, which can carry loads from buildings or traffic Download PDF

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Publication number
EP0900883A1
EP0900883A1 EP97115299A EP97115299A EP0900883A1 EP 0900883 A1 EP0900883 A1 EP 0900883A1 EP 97115299 A EP97115299 A EP 97115299A EP 97115299 A EP97115299 A EP 97115299A EP 0900883 A1 EP0900883 A1 EP 0900883A1
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EP
European Patent Office
Prior art keywords
ground
tube
diameter
column
covering
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.)
Granted
Application number
EP97115299A
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German (de)
French (fr)
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EP0900883B1 (en
Inventor
Werner Möbius
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.)
Josef Mobius Baugesellschaft (gmbh & Co)
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Josef Mobius Baugesellschaft (gmbh & Co)
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Application filed by Josef Mobius Baugesellschaft (gmbh & Co) filed Critical Josef Mobius Baugesellschaft (gmbh & Co)
Priority to DK97115299T priority Critical patent/DK0900883T3/en
Priority to EP97115299A priority patent/EP0900883B1/en
Priority to DE59706689T priority patent/DE59706689D1/en
Priority to NL1010001A priority patent/NL1010001C2/en
Priority to EP98951345A priority patent/EP1009884B1/en
Priority to DK98951345T priority patent/DK1009884T3/en
Priority to AT98951345T priority patent/ATE206787T1/en
Priority to PCT/EP1998/005580 priority patent/WO1999011870A1/en
Priority to DE59801707T priority patent/DE59801707D1/en
Priority to AU97410/98A priority patent/AU9741098A/en
Publication of EP0900883A1 publication Critical patent/EP0900883A1/en
Priority to HK99103936A priority patent/HK1020443A1/en
Publication of EP0900883B1 publication Critical patent/EP0900883B1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/66—Mould-pipes or other moulds
    • E02D5/665—Mould-pipes or other moulds for making piles
    • 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
    • E02D3/02—Improving by compacting
    • E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles

Definitions

  • the invention relates to a method for producing a soil column for Deduction of building and traffic loads according to the preamble of the claim 1.
  • DE 195 18 830 describes a method for stabilizing the subsurface and removing it of building and traffic loads, in the case of discrete Dig a columnar area of insufficiently stable soil material becomes, in the excavated hole a casing made of stretchable, relative tensile, filter-like material is introduced.
  • the sheathing will filled with granular material, which is then compressed to expand the Sheathing in such a way that the surrounding soil partially strengthens the horizontal tension catches.
  • the covering is made of flat material, especially reinforced or unreinforced geotextiles.
  • the granular material is a hard grain graded Material such as gravel sand, stone, crushed grain, slag, mining material, recycling materials or the like, the optionally polymeric or hydraulic binder can be added.
  • the filled material is compacted by shaking, Vibrate or hit the formwork, if necessary also with the help of ramming devices or the like
  • a material column with great rigidity is created in the non-load-bearing floor is deposited in the stable subsurface.
  • the building and traffic loads are on the one hand transferred to the load-bearing soil and on the other hand by load radiation absorbed into the surrounding soil.
  • the surrounding floor is at compresses and partially solidifies the described method and is therefore able to Absorb horizontal forces.
  • the invention is therefore based on the object of a method for producing a Floor pillar for the transfer of building and traffic loads to create that with can be operated with less effort and at particularly favorable results leads.
  • a single tube is also used, which, however, is designed as a displacement tube. It is therefore during driving provided with a closure so that bottom does not enter the inside of the displacement pipe penetrates. It is understood that when using a jacket tube according to claim 1 whose diameter can be larger than that of the displacement pipe. Economically, displacement pipes can only be used up to a certain one Shake the diameter into the ground.
  • Displacement pipes the lower end of z. B. is closed by a flap, are known per se, for example from DE 296 11 427.
  • the bag-like Wrapping inserted into the displacement tube, the diameter of the bag-like Envelope approximately corresponds to the inside diameter of the displacement pipe.
  • the complete insertion of the casing or the lining of the displacement pipe with the wrapping is done in the same way as already in claim 1 has been described.
  • the displacement tube is then lined with the covering Compress and, if necessary, simultaneously shake out the displacement pipe, whereby now the lower end is open. If two flaps forming a roof are used, this happens automatically. However, it can also be thought of a so-called Provide lost tip that remains in the ground when the displacement pipe is pulled.
  • the pillars formed in this way are such that themselves with a horizontal deflection of column sections or a spread the pillars among themselves the pillar remains intact.
  • the casing consists of a suitable one Geotextile material, namely from a fabric or a grid in combination with Nonwoven. It must be sufficiently strong, between 20 up to 300 kN / m for such coverings that have a seam. It is known a seam a weak point, so that for the interpretation of the nominal strength of the Seam reduction factor is crucial.
  • the wrapping is circular manufactured, can be a material with about half the required nominal strength can be used with seam. A strength of at least is preferred 100 kN / m for coverings with seams and about half of them for im To provide wrappings manufactured round process.
  • FIGS. 1 to 4 show in FIGS. 1 to 4 different phases in the manufacture a floor column with the method according to the invention.
  • a jacket tube 10 for example, a diameter of 1 m
  • the casing tube 10 is in a load-bearing layer 14 below the Layer 12 driven, for example 1.5 m.
  • the casing tube 10 extends a certain amount above the layer 12.
  • the driving in of the casing tube 10 takes place in a known manner by appropriate vibrators.
  • a bag-like envelope 16 hangs in the tube 10, the was previously emptied by reaching down to level 20 by the viable Layer 14 is formed.
  • the bag-like sheath 16 is completely open whose diameter is larger than the inner diameter of the casing tube 10, for example until 10 %.
  • the envelope 16 hangs more or less unregulated inside the jacket tube 10 with the end around the edge of the jacket tube 10 and is held by suitable means.
  • FIG 3 shows how the casing tube 10 is pulled out in the direction of arrow 26. This is done by compressing the filled material 24. The compression can either exclusively by the vibration of the pulled-out jacket tube 10 and / or by using conventional compaction techniques. Since the Jacket 16 has a larger diameter than the inner diameter of the jacket tube 10, there is a corresponding expansion of the formed in this way Column, with an additional expansion horizontally or radially by that the material of the envelope 16 according to its stress-strain curve yields. After pulling out the casing tube 10 and the like 4 results in a soil column 28, the upper end of which coincides with the level of layer 12. It serves for the transfer of building and traffic loads together with other floor columns, not shown, the are created according to a certain grid.
  • Fig. 3 it can be seen that due to the compression of the material 24 a force is exerted on the surrounding material 12, indicated by arrow 30.
  • the surrounding Material 12 in turn is compressed and builds up a reaction force 32.
  • the forces 30, 32 are in equilibrium, some of the forces 30 being absorbed by the tension of the sheath 16 can be.
  • the tube When creating a floor pillar using the displacement method it becomes similar proceeded, however, the tube is driven in the displacement process, so that emptying the pipe is no longer necessary. In the displacement process however, the tube has a slightly smaller outer diameter than the one above described method, for example only up to 0.8 m.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Agronomy & Crop Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Fencing (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Foundations (AREA)

Abstract

The invention relates to a method for producing ground columns (28, 86, 88) to support building or travelling loads, wherein a tubular encasing (10) is driven into the ground in a stationary zone, the ground material is removed from the tubular encasing (10), a sheathing (16) made of geotextile material is inserted into the tubular encasing (10) and filled with a load-bearing, granulated, loose material (24), the load-bearing material (24) is subsequently compacted and the tubular encasing (10) is removed. An individual jacket tube for each ground column (28, 86, 88) is driven into the ground, the jacket tube (10) is emptied by excavation, a sack-like sheathing (16) with a diameter that is larger than the diameter of the inner diameter of the tubular jacket (10) is introduced into the empty jacket tube (10) and the granulated material (24) progressively presses the sheathing (16) against the stationary supporting layer and the inner wall of the tubular jacket (10) during filling. The granulated material (24) is so compacted upon removal of the jacket tube (10) that the sheathing (16) extends beyond its original diameter until the opposing forces produced by the compacted ground around it are approximately balanced out. The material of the sheathing (16) is endowed with sufficient penetrability qualities so that no surrounding earth can penetrate into the column (28, 86, 88) thus formed.

Description

Die Erfindung bezieht sich auf ein Verfahren zur Herstellung einer Bodensäule zur Abtragung von Bauwerks- und Verkehrslasten nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a method for producing a soil column for Deduction of building and traffic loads according to the preamble of the claim 1.

Aus DE 195 18 830 ist ein Verfahren zur Stabilisierung des Untergrunds und zur Abtragung von Bauwerks- und Verkehrslasten bekannt geworden, bei dem an diskreten Stellen ein säulenförmiger Bereich nicht ausreichend tragfähigen Bodenmaterials ausgehoben wird, in das ausgehobene Loch eine Ummantelung aus dehnbarem, relativ zugfestem, filterartig wirkendem Material eingebracht wird. Die Ummantelung wird mit körnigem Material gefüllt, das anschließend verdichtet wird unter Aufweitung der Ummantelung derart, daß der umgebende Boden durch Teilverfestigung die Horizontalspannung auffängt. Die Umhüllung besteht aus flachem Material, insbesondere bewehrten oder unbewehrten Geotextilien. Das körnige Material ist ein hartes kornabgestuftes Material, wie Kiessand, Gestein, Brechkkorn, Schlacken, Bergematerial, Recyclingstoffe oder dgl., dem ggf. polymeres oder hydraulisch wirkendes Bindemittel zugesetzt sein kann. Das Verdichten des eingefüllten Materials erfolgt durch Rütteln, Vibrieren oder Schlagen der Schalung, ggf. auch mit Hilfe von Rammeinrichtungen oder dgl.DE 195 18 830 describes a method for stabilizing the subsurface and removing it of building and traffic loads, in the case of discrete Dig a columnar area of insufficiently stable soil material becomes, in the excavated hole a casing made of stretchable, relative tensile, filter-like material is introduced. The sheathing will filled with granular material, which is then compressed to expand the Sheathing in such a way that the surrounding soil partially strengthens the horizontal tension catches. The covering is made of flat material, especially reinforced or unreinforced geotextiles. The granular material is a hard grain graded Material such as gravel sand, stone, crushed grain, slag, mining material, recycling materials or the like, the optionally polymeric or hydraulic binder can be added. The filled material is compacted by shaking, Vibrate or hit the formwork, if necessary also with the help of ramming devices or the like

Im nicht tragfähigen Boden entsteht so eine Materialsäule mit großer Steifigkeit, die in den tragfähigen Untergrund abgesetzt ist. Die Bauwerks- und Verkehrslasten werden zum einen in den tragfähigen Boden übertragen und zum anderen durch Lastabstrahlung in den umgebenden Boden aufgenommen. Der umgebende Boden wird bei dem beschriebenen Verfahren verdichtet und teilverfestigt und ist daher in der Lage, Horizontalkräfte aufzunehmen.A material column with great rigidity is created in the non-load-bearing floor is deposited in the stable subsurface. The building and traffic loads are on the one hand transferred to the load-bearing soil and on the other hand by load radiation absorbed into the surrounding soil. The surrounding floor is at compresses and partially solidifies the described method and is therefore able to Absorb horizontal forces.

Zur Herstellung einer Säule wird bei dem bekannten Verfahren so vorgegangen, daß ein Mantelrohr in den Boden eingetrieben und anschließend im Inneren geleert wird. Anschließend wird die Umhüllung, die sich auf einem im Durchmesser kleineren Rohr befindet, auf dem Innenrohr in das Mantelrohr eingeführt. Das körnige Material wird in das Innenrohr eingegeben, wonach dann das Mantelrohr unter Verdichtungswirkung herausgerüttelt wird und anschließend auch das Innenrohr. Ein derartiges Verfahren führt zwar zu zufriedenstellenden Ergebnissen, ist jedoch verhältnismäßig aufwendig.To produce a column, the known process is carried out in such a way that a casing pipe is driven into the ground and then emptied inside. Then the wrapping, which is on a smaller diameter tube is inserted on the inner tube into the jacket tube. The granular material will entered into the inner tube, after which the jacket tube under compression effect is shaken out and then also the inner tube. Such a process leads to satisfactory results, but is proportionate complex.

Daher liegt der Erfindung die Aufgabe zugrunde, ein Verfahren zur Herstellung einer Bodensäule zur Abtragung von Bauwerks- und Verkehrslasten zu schaffen, das mit einem geringeren Aufwand betrieben werden kann und zu besonders günstigen Ergebnissen führt.The invention is therefore based on the object of a method for producing a Floor pillar for the transfer of building and traffic loads to create that with can be operated with less effort and at particularly favorable results leads.

Diese Aufgabe wird durch die Merkmale der Patentansprüche 1 und 2 gelöst.This object is solved by the features of claims 1 and 2.

Bei der Erfindung wurde erkannt, daß ein einzelnes Rohr für die Herstellung derartiger Bodensäulen ausreicht. Bei der Lösung nach Patentanspruch 1 wird ein einzelnes Mantelrohr in den Boden getrieben und wie üblich durch Ausgreifen geleert. Anschließend wird eine sackartige Umhüllung in das leere Mantelrohr eingeführt. Die sackartige Umhüllung hängt daher mehr oder weniger tief in das Mantelrohr hinein und hat eine unregelmäßige, in diesem Fall noch nicht aufgeweitete Gestalt. Durch Einfüllen des körnigen Materials kann die sackartige Umhüllung jedoch bis zum Boden des Mantelrohres, der von der tragfähigen Schicht gebildet ist, vorbewegt werden. Weiteres Auffüllen des körnigen Materials führt dazu, daß die sackartige Umhüllung sich allmählich vollständig gegen die Sohle und die Wand des Mantelrohres anlegt. Gegebenenfalls muß am oberen Ende der sackartigen Umhüllung, das aus dem oberen Ende des Mantelrohres herausragt, ständig für eine gewisse Spannung gesorgt werden, damit es nicht zu unnötigen Faltenbildungen kommt. Trotz der Spannung muß jedoch für eine Nachgiebigkeit gesorgt werden, damit eine satte Anlage der Umhüllung an der Sohle und an der Wand des Mantelrohres gewährleistet ist. Erfindungswesentlich ist jedoch, daß die Umhüllung einen größeren Durchmesser aufweist als der Innendurchmesser des Mantelrohres. Beim Ziehen des Mantelrohres aus dem Boden und gleichzeitigem Verdichten des körnigen Materials in der Umhüllung erfolgt auch ein horizontales oder radiales Aufweiten der Säule, die bei noch nicht gedehntem Material der sackartigen Umhüllung bereits einen größeren Durchmesser hat als der Innendurchmesser des Mantelrohres. Das intensive Verdichten des Füllmaterials führt im weiteren zu einer Dehnung des Geotextilmaterials, was eine zusätzliche horizontale Ausdehnung der Säule zur Folge hat. Der beschriebene Vorgang führt zu einer entsprechenden Verdichtung des umgebenden, sonst nicht tragfähigen Materials, bis ein Gleichgewicht entsteht zwischen den beim Verdichten aufgebrachten horizontalen Kräften und den erzeugten Gegenkräften im umgebenden Boden, wobei ein Teil der Spannungen, die durch das Verdichten gebildet werden, von dem Material der Umhüllung aufgefangen wird. Auf diese Weise ist eine Säule geschaffen, die auch bei sehr weichen nicht tragfähigen Böden eine wirksame Abtragung von Bauwerks- und Verkehrslasten gewährleistet.In the invention it was recognized that a single tube for the production of such Floor columns are sufficient. In the solution according to claim 1, a single Jacketed pipe driven into the ground and, as usual, emptied by reaching out. Subsequently a sack-like covering is inserted into the empty jacket tube. The bag-like wrapping therefore hangs more or less deep into the casing tube and has an irregular shape, in this case not yet expanded. By Filling the granular material can, however, the sack-like covering to the bottom of the casing tube, which is formed by the load-bearing layer, are advanced. Further filling of the granular material leads to the bag-like covering gradually lies completely against the sole and the wall of the casing tube. If necessary, at the top of the bag-like wrapping that comes from the top Protrudes from the end of the casing tube, constant tension is maintained, so that there are no unnecessary wrinkles. Despite the tension, however to be made for compliance, so that a full contact of the wrapping the sole and on the wall of the casing tube is guaranteed. Essential to the invention is, however, that the casing has a larger diameter than the inner diameter of the casing tube. When pulling the casing pipe out of the ground and simultaneous compression of the granular material in the casing also takes place horizontal or radial expansion of the column, if the material has not yet been stretched the bag-like covering already has a larger diameter than the inside diameter of the casing tube. The intensive compression of the filling material leads to further stretching the geotextile material, creating an additional horizontal Expansion of the column. The process described leads to a corresponding one Compression of the surrounding, otherwise unsustainable material until a Equilibrium is created between the horizontal ones applied during compaction Forces and the counterforce generated in the surrounding soil, part of the Stresses created by compression from the material of the casing is caught. In this way, a pillar is created that also at very soft, unsustainable soils effective removal of building and Traffic loads guaranteed.

Bei dem Verfahren nach Patentanspruch 2 wird ebenfalls ein einzelnes Rohr verwendet, das jedoch als Verdrängungsrohr ausgebildet ist. Es ist daher während des Eintreibens mit einem Verschluß versehen, so daß Boden nicht in das Innere des Verdrängungsrohres eindringt. Es versteht sich, daß bei der Verwendung eines Mantelrohres nach Patentanspruch 1 dessen Durchmesser größer sein kann als der des Verdrängungsrohres. Ökonomisch lassen sich Verdrängungsrohre nur bis zu einem bestimmten Durchmesser in den Boden rütteln.In the method according to claim 2, a single tube is also used, which, however, is designed as a displacement tube. It is therefore during driving provided with a closure so that bottom does not enter the inside of the displacement pipe penetrates. It is understood that when using a jacket tube according to claim 1 whose diameter can be larger than that of the displacement pipe. Economically, displacement pipes can only be used up to a certain one Shake the diameter into the ground.

Verdrängungsrohre, deren unteres Ende z. B. von einer Klappe verschlossen wird, sind an sich bekannt, etwa aus DE 296 11 427.Displacement pipes, the lower end of z. B. is closed by a flap, are known per se, for example from DE 296 11 427.

Bei dem erfindungsgemäßen Verfahren nach Patentanspruch 2 wird die sackartige Umhüllung in das Verdrängungsrohr eingeführt, wobei der Durchmesser der sackartigen Umhüllung annähernd dem Innendurchmesser des Verdrängungsrohrs entspricht. Das vollständige Einlegen der Umhüllung bzw. das Auskleiden des Verdrängungsrohres mit der Umhüllung erfolgt in gleicher Weise, wie dies zu Patentanspruch 1 bereits beschrieben wurde. Nach dem Einfüllen des körnigen Materials und dem entsprechenden Auskleiden des Verdrängungsrohres mit der Umhüllung erfolgt dann ein Verdichten und ggf. gleichzeitiges Herausrütteln des Verdrängungsrohres, wobei nunmehr das untere Ende geöffnet ist. Werden zwei ein Dach bildende Klappen eingesetzt, geschieht dies automatisch. Es kann jedoch auch daran gedacht sein, eine sog. verlorene Spitze vorzusehen, die im Erdboden verbleibt, wenn das Verdrängungsrohr gezogen wird. In the inventive method according to claim 2, the bag-like Wrapping inserted into the displacement tube, the diameter of the bag-like Envelope approximately corresponds to the inside diameter of the displacement pipe. The complete insertion of the casing or the lining of the displacement pipe with the wrapping is done in the same way as already in claim 1 has been described. After filling the granular material and the corresponding The displacement tube is then lined with the covering Compress and, if necessary, simultaneously shake out the displacement pipe, whereby now the lower end is open. If two flaps forming a roof are used, this happens automatically. However, it can also be thought of a so-called Provide lost tip that remains in the ground when the displacement pipe is pulled.

Durch das Eintreiben des Verdrängungsrohrs wird das umgebende Material bereits in einem gewissen Maße teilverdichtet. Durch das Verdichten des körnigen Materials in der Umhüllung, insbesondere beim Ziehen des Verdrängungsrohrs, erfolgt ein weiterer Verdichtungsschritt in dem Maß, daß wiederum ein Gleichgewicht hergestellt wird zwischen der Horizontalspannung der Säule nach außen und den Reaktionskräften im umgebenden Boden. Auch hierbei wird daher eine wirksame Abtragung von Lasten erhalten.By driving in the displacement tube, the surrounding material is already in to some extent partially compressed. By compacting the granular material in the sheathing, in particular when pulling the displacement tube, is followed by another Compression step to the extent that an equilibrium is again established between the horizontal tension of the column to the outside and the reaction forces in the surrounding ground. Here, too, an effective transfer of burdens becomes receive.

In beiden Fällen sind die auf diese Weise gebildeten Säulen so beschaffen, daß selbst bei einer horizontalen Auslenkung von Säulenabschnitten oder auch einer Spreizung der Säulen untereinander die Säule intakt bleibt.In both cases, the pillars formed in this way are such that themselves with a horizontal deflection of column sections or a spread the pillars among themselves the pillar remains intact.

Nach einer Ausgestaltung der Erfindung besteht die Umhüllung aus einem geeigneten Geotextilmaterial, nämlich aus einem Gewebe oder einem Gitter im Verbund mit Vliesstoff. Es ist mit einer ausreichend großen Festigkeit zu versehen, die zwischen 20 bis 300 kN/m bei solchen Umhüllungen liegt, die eine Naht aufweisen. Bekanntlich ist eine Naht eine Schwachstelle, so daß für die Auslegung der Nenn-Festigkeit der Nahtabminderungsfaktor entscheidend ist. Wird hingegen die Umhüllung im Rundverfahren hergestellt, kann ein Material mit etwa der Hälfte der erforderlichen Nenn-Festigkeit mit Naht eingesetzt werden. Vorzugsweise ist eine Festigkeit von mindestens 100 kN/m bei Umhüllungen mit Nähten und etwa die Hälfte davon bei im Rundverfahren hergestellten Umhüllungen vorzusehen. According to one embodiment of the invention, the casing consists of a suitable one Geotextile material, namely from a fabric or a grid in combination with Nonwoven. It must be sufficiently strong, between 20 up to 300 kN / m for such coverings that have a seam. It is known a seam a weak point, so that for the interpretation of the nominal strength of the Seam reduction factor is crucial. In contrast, the wrapping is circular manufactured, can be a material with about half the required nominal strength can be used with seam. A strength of at least is preferred 100 kN / m for coverings with seams and about half of them for im To provide wrappings manufactured round process.

Derzeit sind noch keine ökonomisch arbeitenden Verfahren bekannt, derartige Umhüllungen durch ein Rundverfahren, d. h. nahtlos herzustellen. Daher ist es nach einer Ausgestaltung der Erfindung am einfachsten, wenn die Umhüllung aus einer breiten Bahn des gewünschten Materials gebildet ist, das aufeinandergelegt und am offenen Rand durch eine Spezialnaht verbunden wird. Das Verbinden erfolgt mit entsprechendem Nahtmaterial. Um eine ausreichende Festigkeit der Naht zu erhalten, beträgt die Breite der Naht mindestens 1/5 des Säulenumfangs.No economically working processes are currently known, such coverings through a circular process, d. H. seamlessly manufacture. Therefore, it is after one Embodiment of the invention is easiest when the wrapping from a wide Web of the desired material is formed, which is stacked and open Edge is connected by a special seam. The connection is made with the corresponding Suture. In order to obtain sufficient strength of the seam, the Width of the seam at least 1/5 of the column circumference.

Ein Ausführungsbeispiel des erfindungsgemäßen Verfahrens wird anhand von Zeichnungen näher erläutert.An embodiment of the method according to the invention is based on drawings explained in more detail.

Die Zeichnungen zeigen in den Fig. 1 bis 4 verschiedene Phasen bei der Herstellung einer Bodensäule mit dem Verfahren nach der Erfindung.The drawings show in FIGS. 1 to 4 different phases in the manufacture a floor column with the method according to the invention.

In Fig. 1 ist zu erkennen, wie ein Mantelrohr 10, das beispielsweise ein Durchmesser von 1 m hat, in eine Bodenschicht 12 eingetrieben ist, die aus nicht tragfähigem Material besteht. Das Mantelrohr 10 ist bis in eine tragfähige Schicht 14 unterhalb der Schicht 12 vorgetrieben, beispielsweise 1,5 m. Das Mantelrohr 10 erstreckt sich jedoch ein gewisses Maß oberhalb der Schicht 12. Das Eintreiben des Mantelrohrs 10 erfolgt in bekannter Weise durch entsprechende Rüttelgeräte. In Fig. 1 it can be seen how a jacket tube 10, for example, a diameter of 1 m, is driven into a bottom layer 12 made of non-load-bearing material consists. The casing tube 10 is in a load-bearing layer 14 below the Layer 12 driven, for example 1.5 m. The casing tube 10, however, extends a certain amount above the layer 12. The driving in of the casing tube 10 takes place in a known manner by appropriate vibrators.

Wie ferner in Fig. 1 zu erkennen, hängt eine sackartige Umhüllung 16 im Rohr 10, das zuvor durch Ausgreifen geleert wurde, bis auf das Niveau 20, das von der tragfähigen Schicht 14 gebildet ist. Bei vollständig aufgespannter sackartiger Umhüllung 16 ist deren Durchmesser größer als der Innendurchmesser des Mantelrohrs 10, beispielsweise bis 10 %. Durch einfaches Herablassen der Umhüllung 16 hängt diese mehr oder weniger ungeregelt im Inneren des Mantelrohrs 10, wobei das Ende um den Rand des Mantelrohrs 10 herumgelegt und durch geeignete Mittel festgehalten wird. Anschließend wird körniges Material, wie dies in der DE 195 18 830 beschrieben ist, eingefüllt. Das Einfüllen der ersten Mengen führt dazu, daß die Umhüllung 16 unter vertikaler Spannung gespannt wird, so daß sie durch Nachgeben am Rand auf das Niveau 20 absacken kann. Weiteres Auffüllen mit körnigem Material führt dazu, daß die Umhüllung 16 nach und nach gegen den Boden 20 und die Wand des Mantelrohrs 10 angedrückt wird, wobei durch Festhalten des oberen Randes 22 der Umhüllung 16 dafür gesorgt wird, daß diese unter mehr oder weniger Spannung steht. Das vollständige Auffüllen des Mantelrohres bei gleichzeitigem Anlegen der Umhüllung 16 ist in Fig. 2 gezeigt. Das Niveau des eingefüllten Materials 24 ist etwas unterhalb der oberen Kante des Mantelrohres 10, in jedem Fall oberhalb des Niveaus der Schicht 12.As can also be seen in Fig. 1, a bag-like envelope 16 hangs in the tube 10, the was previously emptied by reaching down to level 20 by the viable Layer 14 is formed. When the bag-like sheath 16 is completely open whose diameter is larger than the inner diameter of the casing tube 10, for example until 10 %. By simply lowering the envelope 16, it hangs more or less unregulated inside the jacket tube 10 with the end around the edge of the jacket tube 10 and is held by suitable means. Subsequently becomes granular material, as described in DE 195 18 830, filled. Filling the first quantities leads to the fact that the envelope 16 under vertical tension is tensioned so that it gives way to the level by giving in at the edge 20 can sag. Further filling with granular material leads to the fact that the Envelope 16 gradually against the bottom 20 and the wall of the casing tube 10 is pressed, by holding the upper edge 22 of the envelope 16 therefor care is taken that this is under more or less tension. The whole Filling the jacket tube while simultaneously applying the sheath 16 is in Fig. 2nd shown. The level of the filled material 24 is slightly below the upper one Edge of the casing tube 10, in any case above the level of the layer 12.

In Fig. 3 ist gezeigt, wie in Richtung Pfeil 26 das Mantelrohr 10 herausgezogen wird. Dies geschieht unter Verdichtung des eingefüllten Materials 24. Die Verdichtung kann entweder ausschließlich durch die Vibration des herausgezogenen Mantelrohrs 10 erfolgen und/oder durch Anwendung herkömmlicher Verdichtungstechniken. Da die Ummantelung 16 einen größeren Durchmesser als der Innendurchmesser des Mantelrohrs 10 hat, erfolgt eine entsprechende Aufweitung der auf diese Weise gebildeten Säule, wobei eine zusätzliche Aufweitung horizontal oder radial dadurch geschieht, daß das Material der Umhüllung 16 entsprechend seiner Spannungs-Dehnungs-Kennlinie nachgibt. Nach dem vollständigen Herausziehen des Mantelrohrs 10 und entsprechender Verdichtung ergibt sich gemäß Fig. 4 eine Bodensäule 28, deren oberes Ende mit dem Niveau der Schicht 12 übereinstimmt. Sie dient zur Abtragung von Bauwerks- und Verkehrslasten gemeinsam mit weiteren nicht gezeigten Bodensäulen, die nach einem bestimmten Raster erstellt sind.3 shows how the casing tube 10 is pulled out in the direction of arrow 26. This is done by compressing the filled material 24. The compression can either exclusively by the vibration of the pulled-out jacket tube 10 and / or by using conventional compaction techniques. Since the Jacket 16 has a larger diameter than the inner diameter of the jacket tube 10, there is a corresponding expansion of the formed in this way Column, with an additional expansion horizontally or radially by that the material of the envelope 16 according to its stress-strain curve yields. After pulling out the casing tube 10 and the like 4 results in a soil column 28, the upper end of which coincides with the level of layer 12. It serves for the transfer of building and traffic loads together with other floor columns, not shown, the are created according to a certain grid.

In Fig. 3 ist zu erkennen, daß aufgrund der Verdichtung des Materials 24 eine Kraft auf das umgebende Material 12 ausgeübt wird, angedeutet durch Pfeil 30. Das umgebende Material 12 wird seinerseits verdichtet und baut eine Reaktionskraft 32 auf. Nach der endgültigen Erstellung der Säule 28 sind die Kräfte 30, 32 im Gleichgewicht, wobei ein Teil der Kräfte 30 durch die Spannung der Umhüllung 16 aufgefangen werden kann.In Fig. 3 it can be seen that due to the compression of the material 24 a force is exerted on the surrounding material 12, indicated by arrow 30. The surrounding Material 12 in turn is compressed and builds up a reaction force 32. After the final construction of the column 28, the forces 30, 32 are in equilibrium, some of the forces 30 being absorbed by the tension of the sheath 16 can be.

Bei dem Erstellen einer Bodensäule nach dem Verdrängungsverfahren wird ähnlich vorgegangen, wobei jedoch das Rohr im Verdrängungsverfahren eingetrieben wird, so daß ein Entleeren des Rohres nicht mehr erforderlich ist. Bei dem Verdrängungsverfahren hat jedoch das Rohr einen etwas geringeren Außendurchmesser als beim oben beschriebenen Verfahren, beispielsweise nur bis zu 0,8 m.When creating a floor pillar using the displacement method it becomes similar proceeded, however, the tube is driven in the displacement process, so that emptying the pipe is no longer necessary. In the displacement process however, the tube has a slightly smaller outer diameter than the one above described method, for example only up to 0.8 m.

Claims (7)

Verfahren zur Herstellung einer Bodensäule zur Abtragung von Bauwerks- und Verkehrslasten, bei dem eine rohrartige Schalung in den Boden getrieben wird in einen standfesten Bereich hinein, das Bodenmaterial aus der rohrartigen Schalung entfernt wird, eine Hülle aus Geotextilmaterial in die rohrartige Schalung eingelegt und mit tragfähigem körnigem Material gefüllt wird, das tragfähige Material anschließend verdichtet und die rohrartige Schalung entfernt wird, dadurch gekennzeichnet, daß ein einzelnes Mantelrohr in den Boden getrieben wird, das Mantelrohr durch Ausgreifen geleert wird, eine sackartige Umhüllung in das leere Mantelrohr eingeführt wird, deren Durchmesser größer ist als der Innendurchmesser des Mantelrohrs und das körnige Material beim Einfüllen die Umhüllung gegen die stehen gebliebene Tragschicht und die Innenwand des Mantelrohrs fortschreitend andrückt, das körnige Material beim Herausziehen des Mantelrohrs so weit verdichtet wird, daß die Umhüllung über seinen Ursprungsdurchmesser hinaus gedehnt wird bis zum Gleichgewicht mit den vom ebenfalls verdichteten umgebenden Boden erzeugten Gegenkräften, wobei das Material der Umhüllung so beschaffen ist, daß im wesentlichen kein umgebender Boden in die gebildete Säule eindringt.Process for producing a soil column for the removal of building and Traffic loads in which a tubular formwork is driven into the ground into a stable area, the floor material from the tubular formwork is removed, a shell made of geotextile material is inserted into the tubular formwork and filled with load-bearing granular material, the load-bearing material then compacted and the tubular formwork is removed, characterized in that that a single casing pipe is driven into the ground, the Jacket tube is emptied by reaching out, a sack-like wrapping in the empty Jacket tube is introduced, the diameter of which is larger than the inner diameter of the casing tube and the granular material when filling the casing against the remaining base layer and the inner wall of the casing pipe progressing presses, the granular material when pulling out the casing tube like this is widely compressed that the envelope beyond its original diameter is stretched to equilibrium with that of the surrounding, which is also condensed Soil generated opposing forces, the material of the covering so is that there is essentially no surrounding soil in the column formed penetrates. Verfahren zur Herstellung einer Bodensäule zur Abtragung von Bauwerks- und Verkehrslasten, bei dem eine rohrartige Schalung in den Boden getrieben wird in einen standfesten Bereich hinein, eine Umhüllung aus Geotextilmaterial in die rohrartige Schalung eingelegt und mit tragfähigem körnigem Material gefüllt wird, das tragfähige Material anschließend verdichtet und die Schalung entfernt wird, dadurch gekennzeichnet, daß ein einzelnes am unteren Ende durch einen zu öffnenden Verschluß geschlossenes Verdrängungsrohr in den Boden getrieben wird, eine sackartige Umhüllung in das Verdrängungsrohr eingeführt wird mit einem Durchmesser annähernd gleich dem Innendurchmesser des Verdrängungsrohrs, das körnige Material beim Einfüllen die Umhüllung fortschreitend gegen die stehen gebliebene untere Tragschicht und die Innenwand des Verdrängungsrohrs andrückt, wahrend des Herausziehens des Verdrängungsrohrs bei geöffnetem unterem Rohrende das Material verdichtet wird, die Umhüllung über ihren Ursprungsdurchmesser hinaus gedehnt wird bis zum Gleichgewicht mit der vom verdichteten umgebenden Boden erzeugten Gegenkraft, wobei das Material der Umhüllung so beschaffen ist, daß im wesentlichen kein umgebender Boden in die gebildete Säule eindringt.Process for producing a soil column for the removal of building and Traffic loads in which a tubular formwork is driven into the ground into a stable area, an envelope made of geotextile material into the tubular formwork is inserted and filled with load-bearing granular material, the load-bearing material is then compacted and the formwork is removed, characterized in that an individual at the lower end by an opening Closure closed displacement pipe is driven into the ground, a sack-like covering is inserted into the displacement tube with a Diameter approximately equal to the inside diameter of the displacement pipe, the granular material progressively stands up against the filling remaining lower base layer and presses the inner wall of the displacement pipe, while pulling out the displacement tube with the lower one open Pipe end the material is compacted, the wrapping over its original diameter is stretched out to equilibrium with that of the compacted surrounding ground generated counterforce, the material of the wrapping so is that there is essentially no surrounding soil in the column formed penetrates. Umhüllung zur Durchführung des Verfahrens nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß sie aus einem Gewebe oder Gitter im Verbund mit Vliesstoff besteht. Envelope for performing the method according to claim 1 or 2, characterized characterized in that they consist of a fabric or grid combined with non-woven fabric consists. Umhüllung nach Anspruch 3, dadurch gekennzeichnet, daß ihre Kurzzeitfestigkeit bei einer Verwendung von Nähten 20 bis 300 kN/m oder bei Verwendung einer nahtlosen Umhüllung 20 bis 150 kN/m beträgt.Covering according to claim 3, characterized in that its short-term strength when using seams 20 to 300 kN / m or when using a seamless wrapping is 20 to 150 kN / m. Umhüllung nach Anspruch 4, dadurch gekennzeichnet, daß die Kurzzeitfestigkeit bei einer Umhüllung mit Nähten mindestens 100 kN/m und bei im Rundverfahren hergestellten Umhüllung mindestens 50 kN/m beträgt.Covering according to claim 4, characterized in that the short-term strength with a covering with seams at least 100 kN / m and with the round process produced covering is at least 50 kN / m. Umhüllung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß sie aus einem Bahnabschnitt des Geotextilmaterials gebildet ist, das in einem speziellen Nahtverfahren an zwei Rändern miteinander verbunden ist.Enclosure according to one of Claims 1 to 5, characterized in that it is formed from a web section of the geotextile material, which in a special Seam process is connected at two edges. Umhüllung nach Anspruch 6, dadurch gekennzeichnet, daß die Breite der Nähe mindestens 1/5 des Säulenumfangs beträgt.Covering according to claim 6, characterized in that the width is close is at least 1/5 of the column circumference.
EP97115299A 1997-09-04 1997-09-04 Method for making a column in the ground, which can carry loads from buildings or traffic Expired - Lifetime EP0900883B1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
DK97115299T DK0900883T3 (en) 1997-09-04 1997-09-04 Method of manufacturing a ground post for carrying loads from buildings and traffic
EP97115299A EP0900883B1 (en) 1997-09-04 1997-09-04 Method for making a column in the ground, which can carry loads from buildings or traffic
DE59706689T DE59706689D1 (en) 1997-09-04 1997-09-04 Process for the production of a floor pillar for the removal of building or traffic loads
NL1010001A NL1010001C2 (en) 1997-09-04 1998-09-02 Method and casing for the production of a ground column for absorbing the pressure of construction and traffic works.
AT98951345T ATE206787T1 (en) 1997-09-04 1998-09-03 METHOD AND COVERING FOR PRODUCING A FLOOR COLUMN TO TRANSFER STRUCTURAL OR TRAFFIC LOADS
DK98951345T DK1009884T3 (en) 1997-09-04 1998-09-03 Method and enclosure for producing an earth column to support building or transport loads
EP98951345A EP1009884B1 (en) 1997-09-04 1998-09-03 Method and sheathing for producing a ground column to support building or travelling loads
PCT/EP1998/005580 WO1999011870A1 (en) 1997-09-04 1998-09-03 Method and sheathing for producing a ground column to support building or travelling loads
DE59801707T DE59801707D1 (en) 1997-09-04 1998-09-03 METHOD AND ENVIRONMENT FOR THE PRODUCTION OF A PILLAR FOR THE REMOVAL OF CONSTRUCTION OR TRAFFIC LOADS
AU97410/98A AU9741098A (en) 1997-09-04 1998-09-03 Method and sheathing for producing a ground column to support building or travelling loads
HK99103936A HK1020443A1 (en) 1997-09-04 1999-09-09 Method for making a column in the ground, which can carry loads from building or traffic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97115299A EP0900883B1 (en) 1997-09-04 1997-09-04 Method for making a column in the ground, which can carry loads from buildings or traffic

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EP0900883A1 true EP0900883A1 (en) 1999-03-10
EP0900883B1 EP0900883B1 (en) 2002-03-20

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EP98951345A Expired - Lifetime EP1009884B1 (en) 1997-09-04 1998-09-03 Method and sheathing for producing a ground column to support building or travelling loads

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EP98951345A Expired - Lifetime EP1009884B1 (en) 1997-09-04 1998-09-03 Method and sheathing for producing a ground column to support building or travelling loads

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EP (2) EP0900883B1 (en)
AT (1) ATE206787T1 (en)
AU (1) AU9741098A (en)
DE (2) DE59706689D1 (en)
DK (2) DK0900883T3 (en)
HK (1) HK1020443A1 (en)
NL (1) NL1010001C2 (en)
WO (1) WO1999011870A1 (en)

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NL1014185C2 (en) * 2000-01-26 2001-07-27 Trisoplast Int Bv Method for applying a moisture-impermeable layer in the soil, as well as a trench obtained by such a method.
EP1234916A2 (en) 2001-02-22 2002-08-28 KELLER GRUNDBAU GmbH Method for making column members
DE10025966C2 (en) * 2000-05-25 2002-12-05 Bauer Spezialtiefbau Support tube columns
DE20120859U1 (en) * 2001-12-27 2003-05-08 Kirchner Martin E Apparatus for manufacturing rubble columns in the ground with textile cladding
EP1609914A1 (en) * 2004-06-25 2005-12-28 Keller Ground Engineering Method and structure for ground improvement
DE102004013275B4 (en) * 2004-03-16 2007-02-15 Josef Möbius Bau-Aktiengesellschaft Process for the production of an interactive load-bearing system made of geotextile-coated columns of granular material and the upcoming floors for the removal of building and traffic loads with unsustainable subsoil
DE102006033957A1 (en) * 2006-07-22 2008-01-31 Josef Möbius Bau-Aktiengesellschaft Method for producing geotextile-encased columns from granular and sandy material, involves expanding steel tube with conical section at lower end, to free end, where diameter of geotextile bag corresponds to internal diameter of tube
CN102505682A (en) * 2011-10-31 2012-06-20 山东鸿泰建设集团有限公司 Building waste powder cement pile and foundation treatment method thereof
DE102012022164A1 (en) 2012-05-09 2013-11-14 Werner Möbius Engineering GmbH Structural system for diverting vertical and horizontal loads from elongated building areas to less stable ground, has soil columns, which are covered with geotextile material and form multiple linked systems by connecting elements
DE102015122202A1 (en) 2015-10-22 2017-04-27 Peter Wallis Device for introducing a column element

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DE10351956B3 (en) * 2003-11-07 2005-07-14 Josef Möbius Bau-Aktiengesellschaft Device for extracting earth material from pipe driven into soil has flaps held by cable extending from one end of gripper pipe to other connected to actuator so this lowers cable and flaps drop to outlet position under pressure of soil
DE102012004980A1 (en) 2012-02-25 2013-08-29 Werner Möbius Engineering GmbH Method for stabilizing subsoil of road and building, for use in removal of e.g. building load in stable region, involves compressing and moving jacket tube to floor material installation site, while holding sheath at lower end of soil
DE102015105780B4 (en) 2015-04-15 2018-08-23 Werner Möbius Engineering GmbH Method of stabilizing the subsurface and removing structural and traffic loads in stable areas
CN112030649A (en) * 2020-09-07 2020-12-04 中国电建市政建设集团有限公司 CFG pile-forming construction method suitable for fluid plastic soil layer

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WO2001055514A1 (en) * 2000-01-26 2001-08-02 Trisoplast International B.V. Method for introducing a moisture-impermeable layer into the ground, as well as a trench obtained by such a method
NL1014185C2 (en) * 2000-01-26 2001-07-27 Trisoplast Int Bv Method for applying a moisture-impermeable layer in the soil, as well as a trench obtained by such a method.
DE10025966C2 (en) * 2000-05-25 2002-12-05 Bauer Spezialtiefbau Support tube columns
EP1234916A2 (en) 2001-02-22 2002-08-28 KELLER GRUNDBAU GmbH Method for making column members
EP1234916A3 (en) * 2001-02-22 2002-12-18 KELLER GRUNDBAU GmbH Method for making column members
DE20120859U1 (en) * 2001-12-27 2003-05-08 Kirchner Martin E Apparatus for manufacturing rubble columns in the ground with textile cladding
DE102004013275B4 (en) * 2004-03-16 2007-02-15 Josef Möbius Bau-Aktiengesellschaft Process for the production of an interactive load-bearing system made of geotextile-coated columns of granular material and the upcoming floors for the removal of building and traffic loads with unsustainable subsoil
EP1609914A1 (en) * 2004-06-25 2005-12-28 Keller Ground Engineering Method and structure for ground improvement
DE102006033957A1 (en) * 2006-07-22 2008-01-31 Josef Möbius Bau-Aktiengesellschaft Method for producing geotextile-encased columns from granular and sandy material, involves expanding steel tube with conical section at lower end, to free end, where diameter of geotextile bag corresponds to internal diameter of tube
DE102006033957B4 (en) * 2006-07-22 2010-04-15 Josef Möbius Bau-Aktiengesellschaft Method for creating geotextile coated pillars of granular or rolling material
CN102505682A (en) * 2011-10-31 2012-06-20 山东鸿泰建设集团有限公司 Building waste powder cement pile and foundation treatment method thereof
DE102012022164A1 (en) 2012-05-09 2013-11-14 Werner Möbius Engineering GmbH Structural system for diverting vertical and horizontal loads from elongated building areas to less stable ground, has soil columns, which are covered with geotextile material and form multiple linked systems by connecting elements
DE102015122202A1 (en) 2015-10-22 2017-04-27 Peter Wallis Device for introducing a column element
DE102015122202B4 (en) 2015-10-22 2019-03-28 Peter Wallis Device for introducing a column element

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Publication number Publication date
DE59801707D1 (en) 2001-11-15
HK1020443A1 (en) 2000-04-20
NL1010001A1 (en) 1999-03-05
EP1009884A1 (en) 2000-06-21
NL1010001C2 (en) 1999-06-23
DE59706689D1 (en) 2002-04-25
ATE206787T1 (en) 2001-10-15
WO1999011870A1 (en) 1999-03-11
AU9741098A (en) 1999-03-22
DK1009884T3 (en) 2001-11-19
EP1009884B1 (en) 2001-10-10
DK0900883T3 (en) 2002-07-15
EP0900883B1 (en) 2002-03-20

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