EP1533424A2 - Méthode et dispositif pour le compactage de sol mou - Google Patents

Méthode et dispositif pour le compactage de sol mou Download PDF

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Publication number
EP1533424A2
EP1533424A2 EP04025855A EP04025855A EP1533424A2 EP 1533424 A2 EP1533424 A2 EP 1533424A2 EP 04025855 A EP04025855 A EP 04025855A EP 04025855 A EP04025855 A EP 04025855A EP 1533424 A2 EP1533424 A2 EP 1533424A2
Authority
EP
European Patent Office
Prior art keywords
stopfwendel
stuffing
axial force
ground
controlled
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.)
Withdrawn
Application number
EP04025855A
Other languages
German (de)
English (en)
Other versions
EP1533424A3 (fr
Inventor
Kurt G. Ross
Gerd Gudehus
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.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1533424A2 publication Critical patent/EP1533424A2/fr
Publication of EP1533424A3 publication Critical patent/EP1533424A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • the invention relates to a method for the stabilization of soft soil by introducing and compacting dry mineral powder by means of a rotary driven Stopfchtl is stuffed into a hole in the ground.
  • the object of the invention is therefore to provide a method of to design the aforementioned genus such that a scheduled influence on the subsoil properties is possible.
  • This object is achieved in that the Axial force of Stopfchtl measured and on one each predetermined value is controlled or regulated.
  • the detection and targeted influence of the Stuffing the axial force exerted on the plug spiral makes it possible in a simple way, with sufficient Reliability on the achieved soil stabilization To influence.
  • it will be the first time allows to perform the stuffing so that one above the Ground lying plane, a driveway or a foundation undergoes no undesirable changes in position, the Ground, however, nevertheless compacted in an optimal way and is solidified.
  • the method also allows an adaptation of the Subsoil rehabilitation process in areas different building ground conditions.
  • the floor can be specifically compacted and consolidated in the areas in which it is necessary in each case, whereby above all also the degree of compaction and / or the amount of stuffing material to the respective local Requirements can be adjusted.
  • the soil points compacted areas of previously soft soil as well as out Pressed powdery, soil-like material on. Tension as a result of stuffing disappear without significant shifts of the arranged above it Planums, driveway or foundation quickly.
  • the so improved Subsoil gives less than during and after further loading before after. This makes re-repairs unnecessary. at Traffic routes will also be traffic with faster and / or allows heavier vehicles.
  • the procedure allows a targeted and controlled Commitment. With pilot holes and soundings of the Stock of fabric and the condition of the substrate in addition explored. On this basis, the required axial Tamping force and the arrangement and amount of stuffing material in advance with a soil mechanical calculation model dimensioned.
  • the invention also relates to a device for Implementation of the method with a drilling and stuffing device, on a carrier device by means of a rotary drive drivable Stopfchtl having by means of a Feed drive is axially movable and with a Device for supplying mineral powder to a the stuffing spiral containing tube.
  • this Device With the least possible additional effort for Implementation of said method use. to Solution this task is the device marked by a device for measuring the axial force of Stopfchtl and a device for controlling or Control of the feed drive and / or the rotary drive of Stuffer coil.
  • the carrier device by means of ground anchors, preferably screw anchors, anchored in the ground.
  • ground anchors preferably screw anchors
  • the drilling and stuffing device shown in Fig. 1 has a movable carrier device 1 with a pivotable thereto mounted carriage (leader) 2 on.
  • a slide 3 displaceable by a feed drive, the storage for a Stopfchtl or screw conveyor 4 forms.
  • An arranged on the carriage 3 power rotary head 5 has a connected to a motor 6 rotary drive 7, the over a device 8 for force control with the Stopfchtl. 4 connected is.
  • the Stopfidine 4 is located in a tube 9, the together with the Stopf Maisl 4 in the bottom to be executed bore 10 is lowered and at his upper end has a funnel-like opening 11.
  • Out a silo 12 is connected via a delivery line 13 at Stuffing process dry mineral powder into the opening 11 of the tube 9 introduced.
  • the silo 12 can also another device for the supply of mineral Powder can be used.
  • Stopfchtl 4 The axial force of Stopfchtl 4 is via a hydraulic system applied and as well as the speed and the feed the Stopfchtl 4 constantly controlled to predetermined values.
  • the stuffing coil 4 initially as a screw conveyor in one direction of rotation operated, in which it promotes the soil material up, as shown in Fig. 2.
  • the Stopfwendel 4 brought down pipe 9 holds the bore 10th open.
  • the described Soil promotion by the Stopf Maisl 4 also omitted.
  • the Pipe 9 and the Stopfchtl 4 are then fully displaced in pressed in the ground.
  • the axial force of the Stopfchtl 4 controlled to a respective predetermined value or regulated. This can be done, for example, by that the feed force of the axial feed drive of Stopfchtl 4 is controlled. Instead or in addition it is also possible for this purpose the drive torque of the Stopfchtl 4 to control.
  • the default value to which the axial force is regulated may preferably be due to a soil mechanical Calculation model can be chosen in the properties and Condition of the subsoil and the desired compression or Change of position. In the course of the execution will be both the default value and the underlying Calculation model according to the rules of the observation method customized. For this purpose, during the stuffing the directly caused by this situation changes of Planums, a building or a traffic area in the Darning area observed. Next, it is possible to do this given value of the axial force due to To adapt to changes in the location of traffic areas during Passage of a stuffing area with defined vehicles after stuffing or comparing before and after stuffing be measured. This will at the same time the stoppage success controlled.
  • the device for measuring the axial force can For example, in the area of the device 8 for Force control and thus between the Stopfchtl 4 and the Carrier 1 acting force transducer. Instead can also have another, the feed force of Feed drive or the drive torque of the Rotary drive 7 detecting device can be used.
  • Stopfwendel 4 and the subsequent Plugging dry mineral powder as Addition material may be vertically down (FIG. 5) or obliquely into a dam 14 (Fig. 6) or in an embankment into it.
  • Figure 4 When used under existing foundations 14a ( Figure 4) can only be worked from the sides.
  • the carrier device. 1 by means of ground anchors 15, for example two to four sufficiently sized screw anchors, in the ground anchored.
  • the screw anchors Ground anchor 15 can with the same power rotary head. 5 screwed in and unscrewed after the stopper are, with which also the Stopfchtl 4 is operated.
  • the ground anchors 15 extend at least approximately parallel to the longitudinal axis of Stopf Maisl 4.
  • Sloping ground anchors 15 may also be shown in FIG be arranged that their resultant anchor force in Stopfraum runs.
  • the ground anchors 15 can be omitted, if the dead weight of the carrier used sufficient or if a support against existing Off-road jumps or building parts is possible.
  • the method is also particularly suitable for use in the foundation environment existing, often historical Buildings due to compressible soil stratifications Suffer settlement damage.
  • the procedure is not limited to the described applications.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Soil Working Implements (AREA)
EP04025855A 2003-11-22 2004-10-30 Méthode et dispositif pour le compactage de sol mou Withdrawn EP1533424A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10354624 2003-11-22
DE2003154624 DE10354624B3 (de) 2003-11-22 2003-11-22 Verfahren und Vorrichtung zur Stabilisierung von weichem Boden

Publications (2)

Publication Number Publication Date
EP1533424A2 true EP1533424A2 (fr) 2005-05-25
EP1533424A3 EP1533424A3 (fr) 2006-03-15

Family

ID=34399698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04025855A Withdrawn EP1533424A3 (fr) 2003-11-22 2004-10-30 Méthode et dispositif pour le compactage de sol mou

Country Status (2)

Country Link
EP (1) EP1533424A3 (fr)
DE (1) DE10354624B3 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4125576A1 (de) 1991-08-02 1993-02-04 Gerd Prof Dr Ing Gudehus Verfahren zum einpressen von pulver in weichem boden
DE4417887A1 (de) 1994-05-21 1995-11-23 Gerd Prof Dr Ing Gudehus Schonende Stabilisierung weichen Untergrunds mit Schnecke, Rohr und Pulver

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2563852B1 (fr) * 1984-05-07 1987-06-26 Sif Entreprise Bachy Procede et dispositif pour la realisation en place de colonnes de sol stabilise et compacte.
GB2218722A (en) * 1988-05-19 1989-11-22 Basil Green Pile pressing
DE19509053A1 (de) * 1995-03-14 1996-09-26 Coplan Ing Gmbh Verfahren zur Stabilisierung von bindigen Böden mit ungenügender Tragfähigkeit
DE19845132A1 (de) * 1998-10-01 2000-04-06 Hossein Hosseini Tudeshki Verfahren und Anlage für die Verdichtung von bindigem und nichtbindigem Gut (z. B. Lockergestein) durch Drehspiralverdichtung bzw. Drehspiralstopfverdichtung
GB0013015D0 (en) * 2000-05-26 2000-07-19 Balfour Beatty Ltd Auger piling
DE10335366B4 (de) * 2003-08-01 2005-06-16 Bauer Spezialtiefbau Gmbh Verfahren und Vorrichtung zum Herstellen einer Stabilisierungssäule im Boden

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4125576A1 (de) 1991-08-02 1993-02-04 Gerd Prof Dr Ing Gudehus Verfahren zum einpressen von pulver in weichem boden
DE4417887A1 (de) 1994-05-21 1995-11-23 Gerd Prof Dr Ing Gudehus Schonende Stabilisierung weichen Untergrunds mit Schnecke, Rohr und Pulver

Also Published As

Publication number Publication date
EP1533424A3 (fr) 2006-03-15
DE10354624B3 (de) 2005-05-04

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