EP0246589A1 - Pieu en béton préfabriqué ainsi que méthode et dispositif pour l'enfoncer dans le sol - Google Patents

Pieu en béton préfabriqué ainsi que méthode et dispositif pour l'enfoncer dans le sol Download PDF

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Publication number
EP0246589A1
EP0246589A1 EP87107176A EP87107176A EP0246589A1 EP 0246589 A1 EP0246589 A1 EP 0246589A1 EP 87107176 A EP87107176 A EP 87107176A EP 87107176 A EP87107176 A EP 87107176A EP 0246589 A1 EP0246589 A1 EP 0246589A1
Authority
EP
European Patent Office
Prior art keywords
concrete pile
pile
concrete
ground
reinforcement
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Withdrawn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
EP87107176A
Other languages
German (de)
English (en)
Inventor
Magnus Mauch
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.)
Delmag Maschinenfabrik Reinhold Dornfeld GmbH and Co
Original Assignee
Delmag Maschinenfabrik Reinhold Dornfeld GmbH and Co
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 Delmag Maschinenfabrik Reinhold Dornfeld GmbH and Co filed Critical Delmag Maschinenfabrik Reinhold Dornfeld GmbH and Co
Publication of EP0246589A1 publication Critical patent/EP0246589A1/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Withdrawn legal-status Critical Current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
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/22—Placing by screwing down
    • 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
    • E02D5/56—Screw piles

Definitions

  • the invention relates to a prefabricated concrete pile and a method and a device for its introduction into the ground.
  • the present invention is therefore intended to develop a concrete pile according to the preamble of claim 1 in such a way that it is particularly well capable of transmitting high torques from its upper, driven end to its lower end.
  • a concrete pile according to claim 2 contains only as much reinforcement as is necessary for transmitting the torque at a particular point on the pile. This allows the pile to be manufactured inexpensively overall.
  • the development of the invention according to claim 5 is advantageous with regard to a free cutting of "thread turns" in the ground and also with regard to a locking of the pile inserted into the ground in the angular direction: spring back the elastically displaced soil in the radial outward direction when the rotary movement exerted on the pile is ended.
  • an overall large length concrete pile in several axially consecutive segments can be brought into the ground one after the other, which allows the use of a screwing device with a small working stroke, which is cheaper to manufacture and can be transported more easily.
  • the measured torque is in fact directly associated with the pile's circumferential lubrication of the pile's penetration force into the ground, which in turn dictates the load-bearing capacity of the pile; if the pile is not lubricated on the circumference, the measured torque is representative of the penetration resistance, as just explained, in combination with the circumferential static friction between the pile and the ground. These forces are also characteristic of the later load-bearing capacity of the pile.
  • a prefabricated concrete pile is shown partially screwed into a base 12.
  • the device used for this purpose which exerts an axial force on the concrete pile 10 and at the same time rotates it about its longitudinal axis, is designated by a total of 14 in FIG.
  • the concrete pile 10 has a helical rib 16 running on its outer surface and is provided with a helical reinforcement part 18 on the inside.
  • the latter is shown in the drawing as if it were made from a tape; in practice, the reinforcement member 18 can be made in the usual way from bent and intersecting reinforcement bars, like conventional reinforcements of concrete piles.
  • the concrete pile 10 can comprise further reinforcement parts which are not shown in the drawing and which, in a known manner, have reinforcement bars running in the axial direction and running in the circumferential direction.
  • the upper end of the reinforcement part 18 is welded to a cage-like reinforcement head 20, which in turn is firmly connected to a square drive 22.
  • the square drive 22 is positively received in a drive opening 24 of a drive ring 26.
  • the latter is rotatably and axially supported between two end plates 28, 30 of a total of 32 designated drilling head.
  • the end plates 28, 30 are kept at a distance by a front end plate 34 and a rear end plate 36 and by side plates 38 and, together with the latter, delimit a gear chamber.
  • a pinion 40 meshing with the drive ring 26 rotates, which sits on the shaft of a rotating hydraulic motor 42.
  • the entire drill head 32 can be moved on extensions of the side plates 38 on a drilling mast 44.
  • the piston rod 46 of a long hydraulic working cylinder 48 is articulated on the upper end plate 28, the housing of which is supported on a projecting arm 50 of the upper end of the drilling mast 44.
  • the drilling mast 44 itself is connected via articulated struts 52, 54 connected to a vehicle, not shown, and can be transported from one location to another by the latter. By moving the struts 52, 54, the drilling mast 44 can also be adjusted in its inclination.
  • a linear position transmitter 56 is mechanically coupled to the piston rod 46 or a part that moves rigidly with it.
  • the rotation of the drive ring 26 is detected by an angle sensor 58 which is mechanically coupled to the shaft of the hydraulic motor 42 and which can be formed by a multi-turn potentiometer or a stroboscopic disk with a counter connected downstream.
  • the position transmitter 56 and the angle transmitter 58 are also connected to inputs of a control unit 60, as is a control panel 62 which, in addition to an input field 64 for general working parameters, has an adjustment knob 66 for the pitch of the rib 16 and an adjustment knob 68 for the length of the concrete pile.
  • the setting buttons 66 and 68 are drawn out separately only to highlight the assigned input size; It goes without saying that, if necessary, these quantities can also be entered via the general input field, which can include an alphanumeric keypad in addition to control keys.
  • the general working parameters entered there include, in particular, the target speed selected with regard to the soil strength at which the concrete pile 10 is to be screwed into the ground 12.
  • the control unit 60 controls two 4/3 solenoid valves 70, 72, via which the hydraulic motor 42 or the working cylinder 48 for driving in both working directions with a pressure line 74 coming from a hydraulic pump (not shown) or one to one not shown Return line 76 leading pressure sump are connectable.
  • an adjustable throttle 78 which is adjusted by a servomotor 80, is inserted into the supply line to the hydraulic motor 42.
  • an adjustable throttle 82 which is adjusted by a servo motor 84, is inserted into the supply line leading to the rear working space of the working cylinder 48.
  • the two servomotors 80 and 84 are excited by the control unit 60 in such a way that the helical movement impressed on the upper end of the concrete pile has the same pitch as the rib 16.
  • the control unit 60 preferably works in such a way that it first tries to set the feed speed corresponding to the target speed on the piston rod 46.
  • the speed of rotation of the hydraulic motor 42 is regulated as a function of the actual travel of the piston rod 46 measured via the position transmitter 56.
  • the tracking of the speed of the hydraulic motor 42 to the actual stroke of the piston rod 46 is preferably carried out at least until some gears of the rib 16 have gripped in the ground and by merely turning the concrete pile 10 due to the support of the ribs, the axial necessary to displace the soil Force can be provided.
  • the operation of the control unit 60 can then be modified so that it first of all sets the rotational speed of the hydraulic motor 42 according to the desired feed speed for the concrete pile 10, while the working cylinder 48 ge rade as far as pressure medium is applied, as is necessary to produce any remnants of the axial feed force (according to the remaining position of the piston rod 46 compared to a target position, which results from the total angle of rotation of the concrete pile 10 taking into account the slope the rib 16 results).
  • the concrete pile and the device described above are first used in a factory to manufacture the concrete pile, the square drive 22, the reinforcement part 18, the reinforcement head 20 and other reinforcement components being prefabricated in a known manner and firmly connected to one another by welding.
  • the unit obtained in this way is introduced into a mold with an inner contour which corresponds to the desired outer contour of the concrete pile 10.
  • the concrete is then poured into this mold, and when the concrete has obtained sufficient inherent strength, the concrete pile 10 can be shaped.
  • a split mold this can be done by removing the mold cover and removing the finished pile; when using a one-piece mold, in which the inner surface of the mold is then covered with a release agent, also by unscrewing the finished concrete pile 10.
  • the concrete piles produced in this way can be solid piles, but hollow centrifugal concrete piles can also be produced using a circumferential shape. It is further understood that the reinforcement can also be put under tension when producing the concrete piles 10, so that prestressed concrete piles are obtained.
  • the concrete piles which are between 10 and 20 meters long in practice, are transported to the construction site in a vehicle. There is then a pile with a hoist, as is usually provided on drilling devices for handling drill pipes, when the hoist is raised Drill head 32 placed under this and aligned substantially vertically. Then the drill head 32 is lowered so that the drive square 22 is inserted into the drive ring 26. Now the hoist can be released.
  • a hoist as is usually provided on drilling devices for handling drill pipes
  • the hydraulic motor 42 and the working cylinder 48 are now set in motion, initially with a vertical pile orientation, until the pile tip has worked so far into the ground that it no longer deviates in the lateral direction. Now, by adjusting the struts 52, 54, the drilling mast 44 is inclined in the direction in which the concrete pile 10 is to be screwed into the ground. The hydraulic motor 42 and the working cylinder 48 are then again supplied with pressure medium in a controlled manner via the control unit 60, and the concrete pile 10 is quickly screwed into the ground 12 in the manner already described in more detail above. In practice, an approximately 12 meter long pile can be screwed into a medium-heavy subsoil in a total of 6 minutes (main time), so that pile foundations with closely adjacent piles achieve an output of around ten piles per hour.
  • Figure 3 shows a modified concrete pile 10, in which the helical rib 16 extends only over part of its axial length.
  • a pile is used when the top layer of the soil is very hard and has to be overcome by ramming.
  • the advantages associated with screwing a concrete pile into the ground are still obtained during the second phase of being brought into the ground, which still results in considerable time savings and a considerable reduction in noise pollution.
  • the concrete pile shown in FIG. 4 differs from the exemplary embodiments described above in that it has a cutting tip 86 which can work through hard layers of the subsurface.
  • a two-course rib arrangement consisting of two ribs 16a and 16b which are offset by 180 degrees in the circumferential direction, these ribs also being very wide and spherical.
  • the width of the base of the ribs corresponds to half the spiral pitch, so that the two nested ribs 16a and 16b touch one another.
  • the rib profile is circular.
  • Such a circumferential contour concrete post is particularly suitable for use in resilient subsoil which can spring back into the recesses given by the ribs.
  • the concrete pile shown in FIG. 5 differs from the exemplary embodiments described above in that its main body is slightly conical and tapers towards the lower end.
  • the upper sections of the rib 16 still perform a radial displacement work when they enter the recesses in the substrate that have already been cut by the lower rib sections.
  • the concrete pile 10 according to FIG. 5 has a tip, in which fold-out semi-conical cutting tools 88, 90 are provided.
  • the latter can be placed on a frustoconical seat 92 formed on the lower end of the pile, so that they form the closed cone tip 94 shown in broken lines in FIG.
  • the cutting tools 88, 90 create a free space 96 which, depending on the time at which the cutting tools are extended, extends over a smaller or larger part of the lower end of the concrete pile.
  • the free space 96 can be filled with liquid concrete via an axial through-channel 98 of the concrete pile and - if desired - can be expanded to form an enlarged onion by applying pressure.
  • the exemplary embodiments according to FIGS. 4 and 5 also differ from the previously described exemplary embodiments by the torque-transmitting connection between the upper end of the pile and the drill head 32.
  • the concrete pile according to FIG. 4 has a transverse passage 100 at the upper end, into which a steel bolt 102 is inserted.
  • the latter works together with complementary grooves in the inner circumferential surface of a correspondingly modified drive ring.
  • a square 104 having a large edge length is molded onto the upper end of the pile itself.
  • the drive square 22 of adjacent concrete piles 10, which were screwed equally far into the ground 12, can be firmly connected by a common head plate 108 which has recesses 110, in each of which a drive square 22 is positively received.
  • a reinforcement section 112 of the concrete pile 10 can be partially drawn into the rib 16 in order to increase the dynamic strength of the rib 16.
  • a helical protective rail 114 can be fastened to the radially outer end of this reinforcement section 112, which is provided with an outer welded wear layer 116. Since the protective rail 114 is fastened to the reinforcement section 112 before the pile is poured, its outer surface merges flush with the outer surface of the concrete. The protective rail 114 facilitates the cutting of threads in the subsurface and generally only needs to be provided in the lower section of the concrete pile, since the part of the rib 16 located there has to do most of the cutting and displacement work and is the longest to engage with the underground.
  • the rib 16 can be interrupted.
  • two diametrically opposite openings 118 are provided for each course of the rib 16. These openings are important when screwing the concrete pile 10 into the ground 12 insofar as they represent additional cutting edges.
  • material of the subsurface can also spring into the openings 118 after the screwing in has ended, so that the concrete pile 10 is additionally locked in the direction of rotation.
  • the concrete pile 10 shown in FIG. 8 has an internal axial passage 120, via which a lubricant can be pressed from the upper pile end to the pile tip and from there to the pile circumference.
  • a central passage does not significantly reduce the area moment of inertia of the pile and thus its ability to transmit torque; the static load capacity in the axial direction is also only slightly reduced.
  • the passage 120 is poured with concrete after the concrete pile 10 has been completely introduced into the subsurface.

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)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
EP87107176A 1986-05-21 1987-05-18 Pieu en béton préfabriqué ainsi que méthode et dispositif pour l'enfoncer dans le sol Withdrawn EP0246589A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3617025 1986-05-21
DE19863617025 DE3617025A1 (de) 1986-05-21 1986-05-21 Vorgefertigter betonpfahl sowie verfahren und vorrichtung zu seinem einbringen ins erdreich

Publications (1)

Publication Number Publication Date
EP0246589A1 true EP0246589A1 (fr) 1987-11-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP87107176A Withdrawn EP0246589A1 (fr) 1986-05-21 1987-05-18 Pieu en béton préfabriqué ainsi que méthode et dispositif pour l'enfoncer dans le sol

Country Status (3)

Country Link
US (1) US4911581A (fr)
EP (1) EP0246589A1 (fr)
DE (1) DE3617025A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998030757A1 (fr) * 1997-01-14 1998-07-16 Target Fastenings Limited Pieu et son procede d'utilisation
CN1039502C (zh) * 1992-12-04 1998-08-12 张平潮 钢筋混凝土旋冲桩及其施工方法
DE19743415A1 (de) * 1997-10-01 1999-06-10 Josef Dipl Ing Behrens Selbstbohrender Betonpfahl
GB2336869A (en) * 1997-01-14 1999-11-03 Target Fastenings Limited Pile and method of driving a pile
FR2903435A1 (fr) * 2006-07-07 2008-01-11 Jean Marie Renovation Sarl Sar Dispositif de mesure de resistance de micropieu
EP1985765A1 (fr) 2007-04-25 2008-10-29 Jean-Marie Renovation Dispositif et procédé de mise en place d'un micropieu hélicoïdal de fondation
CH714928A1 (de) * 2018-04-25 2019-10-31 Krinner Innovation Gmbh Verfahren zur Belastungsprüfung von Schraubfundamenten sowie Verfahren und Vorrichtung zur Baugrundcharakterisierung.
WO2023180293A1 (fr) * 2022-03-21 2023-09-28 Aalborg Universitet Pieu à vis en béton
WO2023180295A1 (fr) * 2022-03-21 2023-09-28 Aalborg Universitet Procédé et système d'installation d'un pieu vissé dans un sol

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DE4020757C2 (de) * 1990-06-29 1996-08-01 Pfleiderer Verkehrstechnik Gründungspfahl aus armiertem Beton sowie Verfahren zu seiner Herstellung
US5121455A (en) * 1990-09-11 1992-06-09 Methode Electronics, Inc. Fiber optic connector
US6665990B1 (en) * 2000-03-06 2003-12-23 Barr Engineering Co. High-tension high-compression foundation for tower structures
GB2363133B (en) * 2000-05-09 2002-06-26 Gordon Clark A method and apparatus for forming foundations
GB2371585B (en) * 2000-12-21 2004-12-29 William Henry Ollis Earth anchor
NL1021708C2 (nl) * 2002-10-21 2004-04-22 Franciscus Antonius Ma Heijden Systeem voor het funderen van gebouwen.
US20060275086A1 (en) * 2003-07-29 2006-12-07 Cable Lock Inc Foundation piling base and method of underpinning therefor
US7267510B2 (en) * 2003-07-29 2007-09-11 Cable Lock, Inc. Foundation pile having a spiral ridge
US20050100415A1 (en) * 2003-11-06 2005-05-12 Larovere Tom A. Profiler for installation of foundation screw anchors
US20050108960A1 (en) * 2003-11-26 2005-05-26 James Schluter Polymer concrete pipe
CA2452448A1 (fr) * 2003-12-04 2005-06-04 Joseph R.E. Nimens Methode et appareil pour installer un pieu helicoidal
US6942430B1 (en) * 2004-03-10 2005-09-13 Paul W. Suver Rotary driver for pipe piling
JP3780288B2 (ja) * 2004-07-06 2006-05-31 株式会社大北耕商事 地盤改良装置および地盤改良方法
RU2288326C1 (ru) * 2005-05-24 2006-11-27 Аркадий Викторович Козлович Винтовая свая, способ установки винтовой сваи, приспособление для завинчивания сваи и способ прокладки тоннеля открытым способом с использованием винтовой сваи
FR2892136B1 (fr) * 2005-10-18 2008-02-01 Jean Marie Renovation Sarl Sar Griffe de maintien de tete de micropieu, installation de test a l'arrachement comprenant une telle griffe
FR2892135B1 (fr) * 2005-10-18 2009-05-29 Jean Marie Renovation Sarl Sar Organe de liaison entre un micropieu et un outil d'enfoncement, installation de test a l'arrachement comprenant un tel organe
GB2447491A (en) * 2007-03-15 2008-09-17 Roxbury Ltd Pile Formation
US7950876B2 (en) * 2008-10-21 2011-05-31 Suver Paul W Socket wrench attachment for rotary drive member
DE102013104179A1 (de) 2013-04-25 2014-10-30 GEPRO Ingenieurgesellschaft für Geotechnik, Verkehrs- und Tiefbau und Umweltschutz mbH Einrichtung zur Aufnahme von Horizontalkräften an einer Pfahlstütze und die Verwendung der Einrichtung bei der Montage einer Pfahlstütze
DE102013104184A1 (de) 2013-04-25 2014-10-30 GEPRO Ingenieurgesellschaft für Geotechnik, Verkehrs- und Tiefbau und Umweltschutz mbH Trägerstütze zur Aufnahme eines Trägermittels für eine Lärmschutzwand
DE102014002986B3 (de) * 2014-02-28 2015-03-12 Krinner Innovation Gmbh Verfahren und Vorrichtung zum Einbringen von Schraubfundamenten ins Erdreich
US10161096B2 (en) * 2016-05-31 2018-12-25 Soletanche Freyssinet Ground reinforcing device
IT201600072862A1 (it) * 2016-07-12 2018-01-12 Nordwind S R L Veicolo per infissione di pali
KR101912039B1 (ko) * 2017-04-07 2018-10-25 김규상 유압잭 확장 방식의 원형관 회전 관입장치
RU179006U1 (ru) * 2017-12-26 2018-04-24 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский Томский государственный университет" (ТГУ, НИ ТГУ) Устройство для обеспечения выхода нефти из погребенных слоев донных отложений
US11236489B2 (en) * 2019-09-25 2022-02-01 Wilco Manufacturing, LLC Apparatus for installing a land anchor

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GB190910041A (en) * 1909-10-27 1910-05-26 George Charles Vernon-Inkpen Improvements in Concrete Piles for Foundations and similar purposes.
FR501464A (fr) * 1919-07-07 1920-04-15 Louis Hocquart Pieux à vis en béton armé pour fondations
GB609613A (en) * 1946-03-19 1948-10-05 Braithwaite & Company Engineer Improvements in and relating to screwing heads for piles
GB849413A (en) * 1957-02-13 1960-09-28 Gustave Grimaud Improved foundation pile
US3277968A (en) * 1963-06-28 1966-10-11 Wood Marc Sa Screw piles
GB1125853A (en) * 1967-01-16 1968-09-05 Marutai Doboku Company Ltd A pile driving apparatus including earth boring equipment
FR2369388A1 (fr) * 1976-11-02 1978-05-26 Gillen William F Pieux a vis en beton, moules d'avance
GB1552162A (en) * 1977-11-17 1979-09-12 Parry P J Marine structures
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JPS5854211B2 (ja) * 1979-10-31 1983-12-03 日本サミコン株式会社 ねじり貫入式ｐｃらせん杭
US4621950A (en) * 1983-01-18 1986-11-11 Electric Power Research Institute Techniques for establishing inground support footings and for strengthening and stabilizing the soil at inground locations
NL8301556A (nl) * 1983-05-03 1984-12-03 Pieter Faber Betonnen funderingspaal, inrichting voor het vervaardigen en inrichting voor het in de grond drijven daarvan.
JPS60246923A (ja) * 1984-05-18 1985-12-06 Daido Concrete Kogyo Kk 基礎くいの回転装置

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GB190910041A (en) * 1909-10-27 1910-05-26 George Charles Vernon-Inkpen Improvements in Concrete Piles for Foundations and similar purposes.
GB191128888A (en) * 1909-10-27 1912-07-18 George Charles Vernon-Inkpen Improvements in Concrete Piles for Foundations and similar purposes.
FR501464A (fr) * 1919-07-07 1920-04-15 Louis Hocquart Pieux à vis en béton armé pour fondations
GB609613A (en) * 1946-03-19 1948-10-05 Braithwaite & Company Engineer Improvements in and relating to screwing heads for piles
GB849413A (en) * 1957-02-13 1960-09-28 Gustave Grimaud Improved foundation pile
US3277968A (en) * 1963-06-28 1966-10-11 Wood Marc Sa Screw piles
GB1125853A (en) * 1967-01-16 1968-09-05 Marutai Doboku Company Ltd A pile driving apparatus including earth boring equipment
FR2369388A1 (fr) * 1976-11-02 1978-05-26 Gillen William F Pieux a vis en beton, moules d'avance
GB1552162A (en) * 1977-11-17 1979-09-12 Parry P J Marine structures
JPS59138613A (ja) * 1983-01-28 1984-08-09 Junichi Tsuzuki 螺旋杭

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1039502C (zh) * 1992-12-04 1998-08-12 张平潮 钢筋混凝土旋冲桩及其施工方法
WO1998030757A1 (fr) * 1997-01-14 1998-07-16 Target Fastenings Limited Pieu et son procede d'utilisation
GB2336869A (en) * 1997-01-14 1999-11-03 Target Fastenings Limited Pile and method of driving a pile
US6264403B1 (en) 1997-01-14 2001-07-24 Target Fixings Limited Pile and method of driving a pile
GB2336869B (en) * 1997-01-14 2001-09-05 Target Fastenings Ltd Pile and method of driving a pile
DE19743415A1 (de) * 1997-10-01 1999-06-10 Josef Dipl Ing Behrens Selbstbohrender Betonpfahl
FR2903435A1 (fr) * 2006-07-07 2008-01-11 Jean Marie Renovation Sarl Sar Dispositif de mesure de resistance de micropieu
EP1882780A1 (fr) * 2006-07-07 2008-01-30 Jean Marie Renovation, SARL Dispositif de mesure de resistance d'un micropieu
EP1985765A1 (fr) 2007-04-25 2008-10-29 Jean-Marie Renovation Dispositif et procédé de mise en place d'un micropieu hélicoïdal de fondation
CH714928A1 (de) * 2018-04-25 2019-10-31 Krinner Innovation Gmbh Verfahren zur Belastungsprüfung von Schraubfundamenten sowie Verfahren und Vorrichtung zur Baugrundcharakterisierung.
WO2023180293A1 (fr) * 2022-03-21 2023-09-28 Aalborg Universitet Pieu à vis en béton
WO2023180295A1 (fr) * 2022-03-21 2023-09-28 Aalborg Universitet Procédé et système d'installation d'un pieu vissé dans un sol

Also Published As

Publication number Publication date
DE3617025A1 (de) 1987-11-26
US4911581A (en) 1990-03-27

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