EP1878832A2 - Ensemble pour former un élément de construction allongé souterrain, et élément de déplacement à utiliser dans cet ensemble - Google Patents

Ensemble pour former un élément de construction allongé souterrain, et élément de déplacement à utiliser dans cet ensemble Download PDF

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Publication number
EP1878832A2
EP1878832A2 EP07112443A EP07112443A EP1878832A2 EP 1878832 A2 EP1878832 A2 EP 1878832A2 EP 07112443 A EP07112443 A EP 07112443A EP 07112443 A EP07112443 A EP 07112443A EP 1878832 A2 EP1878832 A2 EP 1878832A2
Authority
EP
European Patent Office
Prior art keywords
assembly
displacement body
blade
tube
outer end
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
EP07112443A
Other languages
German (de)
English (en)
Other versions
EP1878832B1 (fr
EP1878832A3 (fr
Inventor
Jacques Anthonius Maria Bouten
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.)
DECOMBI BV
Original Assignee
DECOMBI BV
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 DECOMBI BV filed Critical DECOMBI BV
Publication of EP1878832A2 publication Critical patent/EP1878832A2/fr
Publication of EP1878832A3 publication Critical patent/EP1878832A3/fr
Application granted granted Critical
Publication of EP1878832B1 publication Critical patent/EP1878832B1/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
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/72—Pile shoes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/10—Deep foundations
    • E02D27/12—Pile foundations
    • E02D27/16—Foundations formed of separate piles
    • 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
    • E02D5/22—Piles
    • E02D5/24—Prefabricated piles
    • E02D5/28—Prefabricated piles made of steel or other metals
    • E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements

Definitions

  • the present invention relates to an assembly for forming an elongate construction element underground, in particular a foundation element, comprising an elongate displacement body and a device for driving the displacement body into the ground in an axial direction, wherein the displacement body is provided at an outer end with at least one displacing member and with at least one outflow opening for a curing construction liquid.
  • the displacement element comprises a hollow, steel tube which is provided at an end with a displacing member in the form of a set of propeller blades with an opposing pitch arranged on a periphery of the tubular body.
  • the tube is driven into the ground while already rotating using a device adapted for this purpose, wherein a cement-like construction liquid is introduced via the tube and can escape from the outflow opening at an outer end of the tube.
  • This so-called grout forms a cement covering around an outer wall of the tube and the propeller blades, which mixes with ground material to form a curing mortar.
  • this layer also fulfills a lubricating function when still in liquid form, so that only a small torque is necessary to drive the tube with the propeller blades further into the ground.
  • the tube is usually driven up and down repeatedly so as to thus enable an excess of grout to be relinquished to the ground and to be mixed with the earth to form a weighted lump, which eventually cures to form a solid foundation base.
  • the displacement body finally remains behind in the ground, surrounded by a protective grout casing, and thus forms a construction element which can be applied in particular as a foundation pile.
  • the propeller blades which extend transversely from the tube, provide a considerable resistance in axial direction, this being particularly manifest in the forming of the base, wherein the tube is moved repeatedly up and downward.
  • the propeller blades are therefore provided with cut-away parts in order to reduce this resistance and moreover enable a better mixing of grout with ground material.
  • the known assembly is then still not found to be practical in use, particularly in respect of forming such a foundation base. This final stage of the process of inserting the known tube is therefore relatively time-consuming.
  • the present invention has for its object, among others, to provide an assembly of the type stated in the preamble, whereby this drawback is obviated to at least significant extent.
  • the at least one displacing member comprises at least one substantially flat blade which extends in axial direction from the outer end of the displacement body, and that the blade is provided with at least one recess within a periphery which may or may not be imaginary. Because such a flat blade has only a limited section transversely of the displacement direction, the resistance encountered by the displacing member when the displacement body is driven up and downward is likewise limited, and more particularly considerably lower than that of the propeller blades of the known assembly. The body can hereby be pulled up and pushed down relatively easily while it is being driven into the ground and after the desired depth has been reached.
  • a weighted base can hereby be formed very rapidly on the displacement element.
  • the recess or recesses in the blade here provide for a sufficient mixing capacity between construction liquid, injected from the outflow opening into the ground, and ground material so that a uniform mortar is created which cures into a solid whole.
  • the invention is suitable here for both pressureless pumping and pumping of the construction liquid under forced pressure.
  • a preferred embodiment of the assembly has the feature according to the invention that at least a lower part of the blade tapers to a point in axial direction. Due to such a pointed form the displacement body allows of easier and more precise placing, and the body will 'find' to a greater extent a linear path downward during insertion.
  • the at least one recess can be realized in the blade in various ways.
  • the assembly according to the invention has the feature in this respect that the at least one recess comprises at least one indented part within an imaginary periphery of the blade.
  • a further particular embodiment of the assembly according to the invention has the feature that the recess comprises at least one opening arranged within the blade. Such an opening reduces rotational friction of the displacement body and provides a further improvement in the mutual mixing of the construction liquid with the ground material.
  • a further preferred embodiment of the assembly according to the invention has the feature that, at the outer end of the displacement body, at least one collar part extends transversely thereof. At a relatively modest size such a collar part already provides for an adequate anchoring in the cured foundation base, which keeps the displacement body from sinking into it.
  • the assembly herein has the feature according to the invention that the collar part comprises a flanged edge extending over a full periphery of the outer end.
  • the invention also relates to a displacement body of the type as applicable in the above described assembly according to the invention, and will now be further elucidated on the basis of a number of exemplary embodiments and an accompanying drawing.
  • a displacement body of the type as applicable in the above described assembly according to the invention, and will now be further elucidated on the basis of a number of exemplary embodiments and an accompanying drawing.
  • Figure 1 shows a first exemplary embodiment of a displacement body of an assembly according to the invention.
  • the displacement body comprises a steel tube 10 with a diameter in the order of 7-50 centimetres and a length in the order of 5 to 20 metres or even longer, depending on the local depth of a solid ground layer.
  • the tube is hollow, having typically a wall thickness in the order of about 4 to 30 millimetres, and comprises a liquid channel 11 which debouches at an outflow opening 12 in or close to an underside 13 of the tube.
  • the tube is further shown in a cross-section along line II-II in figure 1.
  • the assembly comprises a mobile crane device with a piling frame (not further shown).
  • the tube 10 is received in the piling frame coupled to the crane and driven into the ground therewith to the desired depth while rotating and pushing an axial direction.
  • a displacing member 14 which according to the invention comprises a substantially flat drill blade extending in axial direction. When tube 10 is rotated in the ground, this blade 14 provides for an effective displacing of ground material to clear the way for displacement body 10.
  • a cement-like construction liquid so-called grout
  • the outflow opening can be provided with a controllable valve to enable dosage, or at least control, of the outflow of grout from the tube.
  • the grout flowing from outflow opening 12 of tube 10 mixes around the tube with ground material to form a casing of curing mortar.
  • this mortar which is then still fluid, also functions as a lubricant which facilitates a further rotation and driving of tube 10 into the ground.
  • the drill blade 14 applied in this exemplary embodiment tapers downward to a point to enable the tube to be better positioned and driven straight into the ground.
  • the drill blade is provided with at least one recess, in this example in the form of four indented parts 21-24 inside an imaginary periphery 15 defined by drill blade 14. Owing to these recesses 21-24 an adequate mixing of ground material with grout is achieved during the insertion of tube 10. While the tube is being driven into the ground, the tube is moved continuously up and downward in order to enhance the outflow of grout. Once at the desired depth, the tube is driven up and downward a number of extra times so as to inject and mix with earth an excess of grout so as to form a weighted base. Owing to the narrow profile of drill blade 14 transversely of the axial direction of the tube, displacement body 10 encounters no additional resistance here, or hardly so, so that such a base can also be formed relatively rapidly and reliably.
  • Tube body 10 remains behind in the ground afterward and thus forms for instance a foundation pile or other type of construction element.
  • the tube comprises on the outer end a collar part in the form of a continuous flanged edge 16 which extends transversely of tube body 10 and engages in the surrounding foundation base at that location. Once the base has hardened, this flanged edge 16 provides sufficient grip in the foundation base to keep the construction element from subsiding at an authorized vertical load.
  • FIG. 3 A second exemplary embodiment of a displacement body 10 of an assembly according to the invention is shown in figure 3.
  • the displacement body also comprises a steel tube 10 having on an outer end 13 a displacing member in the form of a substantially flat blade 14 which tapers to something of a point on an underside.
  • Blade 14 is provided with recesses in the form of two openings 31,32 for the purpose of enhancing an adequate mixing with ground material of grout injected via an outflow opening 12.

Landscapes

  • 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)
  • Piles And Underground Anchors (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
EP07112443.2A 2006-07-14 2007-07-13 Ensemble pour former un élément de construction allongé souterrain. Not-in-force EP1878832B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1032167A NL1032167C2 (nl) 2006-07-14 2006-07-14 Samenstel voor het in een bodem vervaardigen van een langwerpig constructie-element alsmede een verdringingselement ter gebruike daarbij.

Publications (3)

Publication Number Publication Date
EP1878832A2 true EP1878832A2 (fr) 2008-01-16
EP1878832A3 EP1878832A3 (fr) 2012-06-27
EP1878832B1 EP1878832B1 (fr) 2013-12-04

Family

ID=38650048

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07112443.2A Not-in-force EP1878832B1 (fr) 2006-07-14 2007-07-13 Ensemble pour former un élément de construction allongé souterrain.

Country Status (2)

Country Link
EP (1) EP1878832B1 (fr)
NL (1) NL1032167C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2479237A (en) * 2010-04-01 2011-10-05 Abbey Pynford Holdings Ltd A foundation pile with ridges or channels
EP4227467A1 (fr) * 2022-02-09 2023-08-16 Marti Gründungstechnik AG Mèche de forage pour un dispositif de forage permettant de créer des trous de forage dans un terrain de fondation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107905223B (zh) * 2017-11-16 2019-07-09 中铁十六局集团第三工程有限公司 一种具有注浆功能的管桩桩尖
WO2022135641A1 (fr) * 2020-12-22 2022-06-30 Vestas Wind Systems A/S Perfectionnements apportés ou se rapportant à des monopieux pour éoliennes

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1400633A2 (fr) * 2002-09-19 2004-03-24 Sigma Consult GmbH Tête de forage
BE1018657A5 (nl) * 2009-02-13 2011-06-07 Smet Luc Maria Hugo Corneel Boorinstallatie.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1400633A2 (fr) * 2002-09-19 2004-03-24 Sigma Consult GmbH Tête de forage
BE1018657A5 (nl) * 2009-02-13 2011-06-07 Smet Luc Maria Hugo Corneel Boorinstallatie.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2479237A (en) * 2010-04-01 2011-10-05 Abbey Pynford Holdings Ltd A foundation pile with ridges or channels
EP2374943A3 (fr) * 2010-04-01 2012-05-30 Abbey Pynford Holdings Limited Empilement de fondation
GB2479237B (en) * 2010-04-01 2016-05-11 Abbey Pynford Holdings Ltd A foundation pile
EP4227467A1 (fr) * 2022-02-09 2023-08-16 Marti Gründungstechnik AG Mèche de forage pour un dispositif de forage permettant de créer des trous de forage dans un terrain de fondation

Also Published As

Publication number Publication date
EP1878832B1 (fr) 2013-12-04
NL1032167C2 (nl) 2008-01-15
EP1878832A3 (fr) 2012-06-27

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