EP2103742B1 - Agitateur destiné à la fabrication de colonnes de matériau dans le sol - Google Patents

Agitateur destiné à la fabrication de colonnes de matériau dans le sol Download PDF

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Publication number
EP2103742B1
EP2103742B1 EP20080005230 EP08005230A EP2103742B1 EP 2103742 B1 EP2103742 B1 EP 2103742B1 EP 20080005230 EP20080005230 EP 20080005230 EP 08005230 A EP08005230 A EP 08005230A EP 2103742 B1 EP2103742 B1 EP 2103742B1
Authority
EP
European Patent Office
Prior art keywords
openings
longitudinal direction
feed box
sand
lances
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.)
Not-in-force
Application number
EP20080005230
Other languages
German (de)
English (en)
Other versions
EP2103742A1 (fr
Inventor
Alexander Degen
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.)
DEGEN, ALEXANDER
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
Priority to EP20080005230 priority Critical patent/EP2103742B1/fr
Priority to PCT/EP2009/053256 priority patent/WO2009115578A1/fr
Publication of EP2103742A1 publication Critical patent/EP2103742A1/fr
Application granted granted Critical
Publication of EP2103742B1 publication Critical patent/EP2103742B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E02D3/02—Improving by compacting
    • E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/18—Placing by vibrating

Definitions

  • the present invention relates to a Rüttlervorraum for the production of columns of material in the soil, in particular of sand columns.
  • the sand when it is not dry but earthy, it regularly clogs the transition funnel from the tank (reservoir) to the production pipe.
  • the GB 2 372 517 A describes a vibrator device for producing pillars of material in the ground which has a plurality of elongate elements spaced apart in a horizontal direction and which are interconnected such that a cavity is formed between the elongated elements. In this cavity filling material can be introduced from the side.
  • this document discloses a vibrator apparatus for producing pillars of material in the ground with a vibrator, and a plurality of lances formed of extension members extending in a longitudinal direction and connected by side walls parallel to each other and at a predetermined distance from each other Delivery chamber is defined, wherein openings are provided in at least one of the side walls, which openings are spaced apart in the longitudinal direction .
  • Object of the present invention is to provide an improved Hinttlervorraum for producing columns of material, in particular sand columns, in the ground.
  • a cavity (pumping chamber) is clamped, which can be used to convey sand to the Haittlerspitzen.
  • the feeding of the pumping room with material, in particular sand takes place through the conveyor box, which is provided with openings at regular intervals.
  • material, in particular sand can be introduced into the interior of the conveyor box in a manner not causing any blockage.
  • the openings which are in the ground as the soil is progressing further into the soil, pose no problem as long as the weight of the sand and the water it contains is greater than the pressure in the surrounding soil. This ensures that the soil does not penetrate into the cavity in the ground, but only sand is released into the soil in the desired manner.
  • This arrangement also allows a simple arrangement of a reservoir tank on the ground.
  • the preferably over the length to the output constant cross-section of the conveyor box allows trouble-free feeding of the material (sand) to the output in the ground.
  • the Jottlervorraum two parallel Gans 10 which are connected to each other via a yoke 7 and at a distance b from each other.
  • the distance b between the longitudinal, vertical Center axes M of the vibrating lances 10 is in a range of 0.4 m to 2 m, preferably in a range of 0.4 m to 1 m.
  • the vibrating lances 10 each have a deep vibrator 1 at its lower end.
  • the lower end of the respective deep vibrator 1 has a conical tip 15.
  • the upper end of the respective deep vibrator 1 is connected via a coupling member 17 to a lower end of an extension tube 3.
  • the respective extension tube 3 is connected at its upper end to the yoke 7.
  • a pulley 6 is arranged, over which a wire rope runs, which is connected to a suitable construction equipment, for example a rope excavator (not shown).
  • the vibrating lances 10, which are arranged at a distance b in parallel, are firmly connected to one another in the area of the extension tubes 3 adjoining the upper ends of the depth vibrators 1 by two side walls 2 which are arranged parallel to the respective center axes M of the vibrating lances 10.
  • the extension tubes 3 and the side walls 2 thereby form a frame.
  • the side walls are substantially parallel to each other.
  • the side walls In order to open the largest possible cavity in the frame formed by extension tubes 3 and side walls 2, the side walls 2, with respect to the axis X, which extends perpendicularly through the central axes M, in the greatest possible distance c from the axis X with the outer periphery of the Extension tube 3 connected.
  • the connection can be made by welding or by means of screws.
  • openings 4 are arranged at regular intervals.
  • the openings have a height h in the longitudinal direction.
  • the distance d between two adjacent openings in the longitudinal direction is preferably greater than the height h, more preferably in the range of 1.02 to 1.5 times the height h.
  • the openings 4 in the two opposite side walls 2 are arranged alternately in the longitudinal direction. That is, if in a side view like Fig. 3 an opening 4 is present in the one side wall 2, the other side wall 2, based on the same height in the longitudinal direction of the side wall 2, closed.
  • the openings 4 can be any have geometric shape. In the first illustrated embodiment, the openings 4 are formed as longitudinally elongated hexagons.
  • the side walls 2 have a tapered shape at a lower end (cutting edge) to have an improved penetration property into the ground.
  • the Haittellanzen 10 and the side walls 2 span a space which is a delivery chamber 11, and at the same time form a conveyor box 12 which has a constant cross section sine length perpendicular to the longitudinal axis. A lower end of the conveyor box 12 is open.
  • spray nozzles are arranged for a fluid purge.
  • the outlet openings of the spray nozzles are directed downwards in the direction of the deep vibrator 1.
  • a reservoir tank 5 for supplying column material 13, such as sand, is adapted to stand directly on the floor 14.
  • the reservoir tank 5 preferably has a funnel shape.
  • the reservoir container 5 has on its underside an opening whose shape is adapted to the Rüttellanzen 10 with the fixedly connected side walls 2 so that they sealed against leakage of column material and longitudinally slidably extend through the opening of the reservoir tank 5.
  • the vibrating lances 10 and the side walls 2 extend through the opening so that they can be driven through the opening into the ground.
  • the vibrating lances 10 arranged at a distance b in parallel are in the region of the extension tubes 3 adjoining the upper ends of the depth vibrators 1 by two conveying space side walls 8 instead of the (conveying box) side walls 2 which are likewise arranged parallel to the respective center axes M of the vibrating lances 10. firmly connected.
  • the extension tubes 3 and the delivery chamber side walls 8 thereby form a frame.
  • openings 16 are arranged at regular intervals, which correspond in shape and arrangement of the openings 4 of the side walls 2 of the first embodiment. At the in Fig. 4 illustrated embodiment, the openings 16, however, are rectangular.
  • the delivery chamber side walls 8 have a horizontally extending cutting edge at a lower end.
  • a vertically displaceable, separate conveyor box 12 is arranged in the conveyor chamber 11 spanned by the vibrating lances 10 and the delivery chamber side walls 8.
  • the conveyor box 12 extends in the longitudinal direction within the conveyor chamber 11.
  • the conveyor box 12 has over its length from top to bottom in a direction perpendicular to the longitudinal direction cross-section on a constant rectangular cross-sectional shape.
  • the two narrower side walls 9 are each facing the extension tubes 3.
  • the side walls 2 of the conveyor box 12 are opposite to the delivery chamber side walls 8 of the frame respectively.
  • the side walls 2, 9 are interconnected, e.g. by welding, connected.
  • the conveyor box is closed at the top and open at the bottom.
  • openings 4 are arranged in the longitudinal direction, which are complementary to the respective openings 16 of the respective opposite delivery chamber side wall 8.
  • a hydraulic device e.g. a hydraulic cylinder 18 is arranged.
  • the hydraulic cylinder 18 is adapted to move the conveyor box 12 up and down in the frame, here in the range of about 1 m.
  • the lower end of the conveyor box 12 has a horizontally formed cutting edge.
  • spray nozzles (not shown) for a fluid purge.
  • the outlet openings of the spray nozzles are directed downwards in the direction of the deep vibrator 1.
  • a reservoir tank 5 is arranged as described in the first embodiment.
  • the vibrating lances 10 are positioned.
  • the vibrating lances 10 are raised in a vertical position above the Bodenplanum the future material column position in the ground on the support cable of the cable shovel, the pulley 6 and the yoke 7.
  • the reservoir tank 5 is placed on the floor 14 above the future material column position in the ground so that the vibrating lances 10 etc. can be slidably inserted into the opening in the bottom of the reservoir tank 5. If appropriate, this can only happen when the deep vibrators are already inserted into the ground.
  • the deep vibrators 1 are offset by a respective driven unbalance in horizontal vibrations and the vibrating deep vibrators 1 are lowered into the ground 14.
  • sand 13 is filled in the reservoir tank 5.
  • the filling of the reservoir tank 5 with sand 13 can be done in a simple manner, e.g. be trained with a dump truck.
  • Hinttellanzen 10 takes the delivery chamber 11 and the conveyor box 12 via the openings 4 in the reservoir tank 5 sand 13 in itself and promotes the sand 13 into the tip region of the conveyor box 12 and to the upper end of the already located in the conveyor box 12 sand column.
  • the spray nozzles arranged in the gussets can be used for a water and / or air purge. Its downward spray impulse tears the water and / or the air with it. Furthermore, a water rinse increases the mass of the sand column and makes the sand more fluid.
  • the vibrating lances 10 are introduced to the intended depth of improvement in the bottom 10, wherein continuously through the openings 4 sand 13 is introduced into the conveyor box 12. Depending on the desired depth of the sand column and size of the reservoir tank 5 sand 13 is refilled into the reservoir tank 5.
  • the Haittellanzen 10 After reaching the final depth, the Haittellanzen 10 are raised slightly, optionally supported by the water and / or air purging, sand 13 enters the forming cavity. Thereafter, the Haittellanzen 10 are lowered again and pressed against the sand, the vibration causes the Tiefenrüttler a compression of the sand. With these alternating steps, the material column (Stopfklale) is formed up to the planned height.
  • the conveyor box 12 is carried along with the penetration of the vibrating lances 10 at the same time.
  • the penetration of the conveyor box 12 can be supported in the ground by vertical movements by means of the hydraulic cylinder 18.
  • the conveyor box is, as in the first embodiment, charged with sand 13 from the reservoir tank 5.
  • the conveyor box 12 is moved to the area of the tips 15 of the Tiefenrüttler 1 to improved supply of sand, possibly with the participation of water and / or air flush, in the cavity formed to support.
  • the vibrating lances 10 After the vibrating lances 10 have been lifted completely out of the ground, they can be transported with the crawler crane to the next position for the production of a column of material.
  • the funnel can be dismantled or offset and the floor planum treated in the area of the created material column.
  • the production of such sand columns with the vibrator device according to the invention can be used in particular for land reclamation measures if the soil used for this land reclamation is not clean sand but silty sand that can not or not sufficiently be compacted by vibration of deep vibrators alone ,
  • the sand pillars can carry a large part of the building loads coming from above, whereby the settlement would be greatly reduced compared to an otherwise identical landfill without sand pillars.
  • Another positive effect is the reduction in the risk of earthquake-induced soil liquefaction.
  • the use of two or more deep vibrators 1 also has an advantageous effect on the size of the conveyor tube / conveyor box.
  • the size of the conveyor tube is limited in principle by the need to be able to lower the unit of deep vibrator 1 and conveyor box 12 even deeper.
  • a significantly larger conveyor tube can be attached.
  • the use of the spray nozzles also has an advantageous effect on the flow of the sand.
  • the downward spray impulses of the spray nozzles entrain the sand, and on the other hand, the water content of the sand is increased, thereby making the sand more fluid.
  • the exactly vertical and parallel design of the delivery chamber 11 and the vertical supply and promotion of sand through the conveyor box avoid directional deflections and geometry changes that can lead to blockages.
  • the conveyor box 12 can be moved vertically until the openings 16 of the conveyor box 12 are no longer over the openings 4 of the side walls 2 of the frame. Subsequently, the conveyor box 12 can be placed inside under compressed air, so that in principle a Schleusenrüttler adjusts with pressure chamber, from which the air can escape only through the lower, open end. This pressurization can be helpful in very soft soils to improve sand erosion.
  • apertures 21 are provided on the side walls 2 and 8 respectively.
  • These diaphragms 21 are on the outside of the earth-facing side of the side walls 2 and 8 in longitudinally extending guides 22 so slidably.
  • the openings 4, 16 in the side walls 2, 8 are closed or kept open by complementary openings 19 in the aperture 21.
  • the shape, size and arrangement of the openings 19 is complementary to the openings 4, 16.
  • the distance in the longitudinal direction between the openings 19 is set such that a closure of the openings 4, 16 is ensured with the spacing between the openings 19 of the aperture 21 ,
  • the diaphragms 21 are movable by a hydraulic cylinder or other drive mechanism.
  • the apertures 21 may also be on the insides, i. the delivery chamber 11 facing sides of the side walls 2 and 8 are arranged. This arrangement would be advantageous in terms of achieving a seal, since the applied pressure presses the diaphragm 21 on the side walls 2 and 8, and so seals.
  • an arrangement with three or more deep vibrators is conceivable, which are connected by a frame and / or side walls. This advantageously has an effect on the size of the delivery pipe or space with regard to the advantages mentioned above.
  • the arrangement with several deep vibrators is limited by the need to be able to lower the unit of deep vibrators, extension components and the conveying space spanning therebetween to depth.
  • the shape of the openings 4, 16, 19 may also be formed by a round, rectangular, or for example oval shape instead of the elongated hexagons described above.
  • the open top portion of the conveyor box may also be e.g. be formed by a closable by lifting mechanism opening.
  • the suspension by yoke and pulley is just one example and can be adapted to the construction equipment used. Furthermore, according to the construction equipment used and the final depth of the sand column to be reached, the extension tubes and according to the delivery space / box can be extended by other modules to any length.
  • a delivery box structurally separate from the extension tubes can also be arranged.
  • This conveyor box has in its corner areas inwardly directed fillets into which the extension tubes can be accurately inserted and are integrally connected by means of a harness around the unit of extension tubes and conveyor box.
  • a vertical vibrator so-called Aufsatzrüttler (not shown), as e.g. is used in a driving of sheet piles, be put on.
  • the vertical vibration supports the penetration of the conveyor box, on the other hand, it improves the flow of sand in the conveyor box 12th
  • FIGS. 5 and 6 a third, not claimed, embodiment is shown.
  • the section along the line BB in Fig. 6 equals to Fig. 2 .
  • the third, not claimed, embodiment differs from the first embodiment in that no Haittellanzen 10 are formed, since the function of the extension tubes 3 is taken over by the conveyor box 12.
  • the conveyor box 12 has a substantially rectangular cross-section (see Fig. 6 ) with round narrow sides 29.
  • the deep vibrators 1 are attached to the underside 12u of the conveyor box 12 and the supply and control lines are guided protected in the conveyor box 12.
  • the conveyor box 12 has, like the conveyor boxes of the first and second embodiments over its length a constant cross-section perpendicular to the longitudinal axis, which ends only at its bottom in a plurality of outlet openings 23, 24, instead of an opening with the constant cross section.
  • the conveyor box 12 has a larger volume in comparison and the positive properties of the over the entire length unchanged cross section are retained.
  • the outlet openings 23, 24 may be partially formed laterally directly above the depth vibrator 1.
  • the reservoir container 5 can also be used with the third unclaimed embodiment.
  • the reservoir tank 5 is advantageous, but not necessary.
  • the material (sand) 13 could also by means of belt conveyors, dump trucks or similar. be heaped up to a material mountain directly on the protruding from the ground conveyor box 12. The material would then independently "flow” through the openings 4 in the conveyor box 12. Alternatively, the material 13 could also be conveyed pneumatically or similarly directly into the openings 4.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (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)

Claims (8)

  1. Dispositif vibreur pour réaliser des colonnes de matériau dans le sol comprenant :
    * au moins deux vibreurs en profondeur (1),
    * au moins une pièce rallonge (3) pour chaque vibreur en profondeur (1) et qui s'étend dans la direction longitudinale et est fixée aux vibreurs (1) pour former une lance vibrante (10) s'étendant dans la direction longitudinale,
    * les lances vibrantes (10) étant reliés par des parois latérales (8), parallèles, et à une certaine distance (b) de façon à définir entre elles une chambre de transfert (11) et un caisson de transfert (12) pour transférer du matériau de colonne (13) dans la direction longitudinale à travers la chambre de transfert (11),
    * le caisson de transfert (12) étant mobile par rapport aux lances vibrantes (10) dans la direction longitudinale, et
    * des ouvertures (16) sont prévues pour fournir du matériau de colonne (13) au caisson de transfert (12), dans au moins l'une des parois latérales (8), cette ouverture étant écartée dans la direction longitudinale.
  2. Dispositif vibreur selon la revendication 1 dans lequel les pièces de rallonge sont des tubes rallonges (3).
  3. Dispositif vibreur selon la revendication 2,
    caractérisé en ce que
    le caisson de transfert est logé dans la chambre de transfert (11) entre les lances vibrantes (10).
  4. Dispositif vibreur selon la revendication 3,
    caractérisé en ce que
    le caisson de transfert (12) est mobile par rapport aux lances vibrantes (10) en étant entraîné dans la direction longitudinale par un dispositif hydraulique (18).
  5. Dispositif vibreur selon la revendication 3 ou 4, selon lequel un vibreur vertical est relié au caisson de transfert (12) pour faire vibrer le caisson de transfert (12) dans la direction longitudinale.
  6. Dispositif vibreur selon l'une des revendications 4 à 5, selon lequel le châssis reliant les lances vibrantes (10) comporte des parois latérales (8) délimitant de manière étanche la chambre de transfert (11) vers l'extérieur et ces parois latérales comportent des ouvertures (4) complémentaires aux ouvertures (16) du caisson de transfert (12) de façon que dans une position correspondante du caisson de transfert (12) par rapport au châssis, les ouvertures (4, 16) se recouvrent dans une direction perpendiculaire à la direction longitudinale.
  7. Dispositif vibreur selon la revendication 6, selon lequel les guichets (21) des parois côté chambre de transfert (8) équipant les ouvertures (16) coulissent dans la direction longitudinale, ces guichets (21) ayant des ouvertures (19) complémentaires aux ouvertures (16) de la paroi latérale (8) correspondante, et
    - les guichets (21) sont mobiles sélectivement dans une position de fermeture dans laquelle les guichets (21) ferment les ouvertures (16) des parois latérales (8) et une position d'ouverture dans laquelle les ouvertures (16, 19) respectives se correspondent.
  8. Dispositif vibreur selon l'une des revendications 3 à 7, selon lequel le caisson de transfert (12) peut coulisser jusque dans la région des pointes (15) des vibreurs en profondeur.
EP20080005230 2008-03-19 2008-03-19 Agitateur destiné à la fabrication de colonnes de matériau dans le sol Not-in-force EP2103742B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20080005230 EP2103742B1 (fr) 2008-03-19 2008-03-19 Agitateur destiné à la fabrication de colonnes de matériau dans le sol
PCT/EP2009/053256 WO2009115578A1 (fr) 2008-03-19 2009-03-19 Dispositif vibrant pour fabriquer des colonnes de matériau dans le sol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20080005230 EP2103742B1 (fr) 2008-03-19 2008-03-19 Agitateur destiné à la fabrication de colonnes de matériau dans le sol

Publications (2)

Publication Number Publication Date
EP2103742A1 EP2103742A1 (fr) 2009-09-23
EP2103742B1 true EP2103742B1 (fr) 2012-07-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080005230 Not-in-force EP2103742B1 (fr) 2008-03-19 2008-03-19 Agitateur destiné à la fabrication de colonnes de matériau dans le sol

Country Status (2)

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EP (1) EP2103742B1 (fr)
WO (1) WO2009115578A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011005267A1 (de) 2011-03-09 2012-09-13 Alexander Degen Rüttleranordnung zum Herstellen von Füllmaterialsäulen
CN102953307A (zh) * 2011-08-30 2013-03-06 中国民航机场建设集团公司 机场场道粉细砂基地处理方法
ITPD20110353A1 (it) * 2011-11-11 2013-05-12 Ivano Violato Dispositivo di perforazione per la messa in opera di pali di fondazione

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0647818B2 (ja) * 1987-06-02 1994-06-22 株式会社奥村組 砕石連続地中壁の築造方法
DE4138443A1 (de) 1991-11-22 1993-05-27 Vibroflotation Ag Vorrichtung zur herstellung von pfaehlen aus beton oder dergleichen in erdreich
GB2372517B (en) * 2001-02-21 2004-08-11 Roxbury Ltd Particulate ground columns

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Publication number Publication date
EP2103742A1 (fr) 2009-09-23
WO2009115578A1 (fr) 2009-09-24

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