EP3006627B1 - Pieu à vis - Google Patents

Pieu à vis Download PDF

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Publication number
EP3006627B1
EP3006627B1 EP14188219.1A EP14188219A EP3006627B1 EP 3006627 B1 EP3006627 B1 EP 3006627B1 EP 14188219 A EP14188219 A EP 14188219A EP 3006627 B1 EP3006627 B1 EP 3006627B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
shaft
screw pile
ground
screw
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.)
Active
Application number
EP14188219.1A
Other languages
German (de)
English (en)
Other versions
EP3006627A1 (fr
Inventor
Norman Weenk
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.)
Weenk Schroeffunderingen BV
Original Assignee
Weenk Schroeffunderingen 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 Weenk Schroeffunderingen BV filed Critical Weenk Schroeffunderingen BV
Priority to DK14188219.1T priority Critical patent/DK3006627T3/en
Priority to PL14188219T priority patent/PL3006627T3/pl
Priority to EP14188219.1A priority patent/EP3006627B1/fr
Publication of EP3006627A1 publication Critical patent/EP3006627A1/fr
Application granted granted Critical
Publication of EP3006627B1 publication Critical patent/EP3006627B1/fr
Active 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
    • E02D5/22—Piles
    • E02D5/56—Screw 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
    • E02D7/22—Placing by screwing down

Definitions

  • the invention relates to a screw pile such as generally known from CA 2 155 504 A1 comprising:
  • Piles in general are used to support structures on non-solid ground.
  • concrete piles or steel piles are driven into the ground, to a solid ground layer, such as a sand layer or a rock layer.
  • This driving of piles is accompanied by a lot of noise and vibrations.
  • screw piles are known.
  • a screw pile is inserted into the ground by rotation similar to a screw in a piece of wood. Because such screw piles are inserted by rotation, the diameter of these screw piles are generally smaller, than conventional piles. As a result, screw piles typically have a lower weight, contributing to a better handling of the piles.
  • the surrounding ground is compacted, such that the screw piles typically have a good axial strength for supporting structures.
  • the screw piles have a relatively smaller diameter, the screw piles have a lower transverse stability than corresponding conventional piles, which are wider and can withstand transverse forces better. Especially for structures with a large height and small width, such as wind screens and noise barriers, a high transverse stability is required. For such applications, the known screw piles are less suitable.
  • FR 2863633 discloses a ground anchor having a rod with helical flanges at one end. This ground anchor is first placed into the ground by rotation. Afterwards, a stability part with a number of vertical wings is slid over the top of the rod and pushed into the ground. Then a nut having a loop is screwed onto the rod, such that a cable or the like can be attached to the ground anchor.
  • the stability part increases the transverse stability of this ground anchor.
  • a separate device or manual labor is required to push the stability part into the ground.
  • the rod needs to extend above the stability part for a mounting part to be attached afterwards. This will increase the height, relative to the ground, and make a flush arrangement of the ground anchor with the surrounding ground difficult.
  • CA 2155504 discloses a screw pile in which also first the screw pile is inserted into the ground. Then, after the screw part is inserted into the ground, a threaded rod is screwed into a nut arranged at the top of the screw pile. A stability part with vertical wings is slid over the threaded rod and a second nut is arranged on the threaded rod, such that the stability part can be pushed into the ground by tightening the second nut.
  • the screw pile according to the invention has a sleeve with at least one wing arranged around the shaft.
  • the blocking means ensure that the sleeve, although it can freely rotate around the shaft, cannot slide past the mounting head.
  • the shaft including the sleeve with wing is placed on the ground and rotated by engaging a rotary device on the mounting head.
  • the screw pile will dig into the ground due to the rotating movement and the helical flange.
  • the sleeve will be clamped between the ground and the blocking means, which prevent the shaft from sliding over the mounting head.
  • the shaft By rotating the shaft further, the shaft will go deeper into the ground and take the sleeve with the wings along into the ground.
  • the blocking means are provided by the mounting head having a circumference extending in radial direction of the sleeve at least partially beyond the circumference of the sleeve.
  • the blocking means comprise a radially extending circumferential flange arranged to the shaft, wherein the diameter of the circumferential flange is larger than the inner diameter of the sleeve.
  • the radially extending circumferential flange provides an end surface against which the sleeve can be supported and the clamping force, generated when inserting the shaft into the ground, can be transferred onto the sleeve and the at least one wing to push the sleeve into the ground.
  • the circumferential flange is a mounting flange.
  • the mounting flange provides an easy mounting for structures to be supported by the screw pile of the invention.
  • a mounting flange typically has some holes in the flange, to accommodate bolts and nuts.
  • the at least one wing at least partially tapers towards the one end of the shaft.
  • the tapering end of the wing will ensure, that the wing is easily inserted into the ground. It will also provide some direction to the wing within the ground.
  • At least two, preferably four, wings are arranged in axial direction along the sleeve and extending in radial direction, wherein the at least two wings are evenly distributed along the circumference of the sleeve.
  • Two wings evenly distributed along the circumference and therefor in line with each other, provides for a good transverse stability perpendicular to the plane, in which the two wings are provided.
  • the wings are provided into two planes perpendicular to each other and will provide a transverse stability in any direction transverse to the shaft.
  • screw pile according to the invention further comprises a bushing arranged between the sleeve and the shaft.
  • Screw piles are typically made of galvanized steel. If the shaft is rotated within the sleeve, the galvanization layer could be damaged, such that the screw pile could start to rust early. By arranging a bushing between the shaft and the sleeve, a bearing is provided, such that the galvanization layer is not damaged.
  • the bushing can be made out of a suitable plastic, such as nylon.
  • Figure 1 shows a perspective view of a screw pile 1 according to the invention.
  • the screw pile 1 has a shaft 2 with a helical flange 3 extending from the bottom of the shaft 2 over at least a part of the length of the shaft 2.
  • a mounting flange 4 is arranged at the top of the shaft 2.
  • the mounting flange 4 is provided with a number of holes 5 for accommodation of bolts and nuts and for engagement of a rotary driving means to rotate the shaft 2 into the ground.
  • a sleeve 6 is provided with two wings 7, which are arranged in axial direction along the sleeve 6 and extending in radial direction. The two wings are evenly distributed along the circumference of the sleeve 6.
  • Figure 2 shows schematically the insertion of a screw pile 1 according to figure 1 in different stages. There are four stages shown from left to right in the figure.
  • the screw pile 1 is positioned at the correct position on the ground surface 8.
  • the sleeve 6 with the wings 7 is also placed on the ground surface 8 and the shaft 2 extends through the sleeve 6.
  • the screw pile 1 is rotated such that it is screwed into the ground 8.
  • the sleeve 6 with the wings 7 stay on the ground surface 8.
  • the screw pile 1 is inserted to such a depth into the ground 8, that the sleeve 6 with the wings 7 is clamped between the mounting flange 4 and the ground 8 causing the wings 7 and sleeve 6 to be pushed into the ground due to the rotating action of the screw shaft 1.
  • the screw pile 1 is inserted fully into the ground and the sleeve 6 with the wings 7 is also fully inserted into the ground 8, such that the mounting flange 4 is flush with the surrounding ground surface 8.
  • Figure 3 shows a cross sectional view of the top of the screw pile 1 according to figure 1 . It is clear that the diameter of the sleeve 6 is smaller than the diameter of the mounting flange 4, such that the mounting flange 4 effectively blocks the sleeve 6 from for axial movement of the sleeve 6 past the mounting head or mounting flange 4.
  • two bushings 9 are arranged providing a bearing for the freely rotatable sleeve 6 relative to the shaft 2.
  • FIG 4 shows a perspective view of a noise barrier 10 supported by a number of screw piles 1 according to figure 1 .
  • Each screw pile 1 supports a pole 11 of the noise barrier 10.
  • shields 12 are provided which provide the noise barrier.
  • each screw pile 1 The wings 7 of each screw pile 1 are arranged in the same plane as the shields 11, such that the screw piles 1 provide an optimal transverse stability in the direction T. This contributes for example in the ability of the noise barrier 10 to withstand strong winds.
  • Figure 5 shows a perspective view of a variant of a screw pile according to figure 1 .
  • this variant four wings 7 are arranged evenly distributed along the circumference of the sleeve 6.

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)

Claims (7)

  1. Pieu à vis 1 comprenant :
    - une tige 2 ;
    - une bride hélicoïdale 3 agencée autour de la tige et s'étendant d'une extrémité de la tige sur au moins une partie de la longueur de la tige ;
    - une tête de montage 4 agencée sur l'autre extrémité de la tige ;
    - un manchon 6 agencé rotatif libre autour de la tige ;
    - des moyens de blocage pour bloquer un mouvement axial du manchon au-delà de la tête de montage ; et
    - au moins une aile 7 agencée dans une direction axiale le long du manchon et s'étendant dans une direction radiale
    caractérisé en ce que
    le manchon est mobile axialement entre au moins l'une extrémité de la tige et les moyens de blocage.
  2. Pieu à vis selon la revendication 1, dans lequel les moyens de blocage sont fournis par la tête de montage ayant une circonférence s'étendant dans une direction radiale du manchon au moins partiellement au-delà de la circonférence du manchon.
  3. Pieu à vis selon la revendication 1 ou 2, dans lequel les moyens de blocage comprennent une bride circonférentielle s'étendant radialement agencée sur la tige, dans lequel le diamètre de la bride circonférentielle est supérieur au diamètre interne du manchon.
  4. Pieu à vis selon la revendication 3, dans lequel la bride circonférentielle est une bride de montage.
  5. Pieu à vis selon l'une quelconque des revendications précédentes, dans lequel l'au moins une aile se rétrécit au moins partiellement vers l'extrémité de la tige.
  6. Pieu à vis selon l'une quelconque des revendications précédentes, dans lequel au moins deux, de préférence quatre, ailes sont agencées dans une direction axiale le long du manchon et s'étendant dans une direction radiale, dans lequel les au moins deux ailes sont réparties uniformément sur la circonférence du manchon.
  7. Pieu à vis selon l'une quelconque des revendications précédentes, comprenant en outre une douille agencée entre le manchon et la tige.
EP14188219.1A 2014-10-08 2014-10-08 Pieu à vis Active EP3006627B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DK14188219.1T DK3006627T3 (en) 2014-10-08 2014-10-08 helical pier
PL14188219T PL3006627T3 (pl) 2014-10-08 2014-10-08 Pal śrubowy
EP14188219.1A EP3006627B1 (fr) 2014-10-08 2014-10-08 Pieu à vis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14188219.1A EP3006627B1 (fr) 2014-10-08 2014-10-08 Pieu à vis

Publications (2)

Publication Number Publication Date
EP3006627A1 EP3006627A1 (fr) 2016-04-13
EP3006627B1 true EP3006627B1 (fr) 2018-04-04

Family

ID=51687886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14188219.1A Active EP3006627B1 (fr) 2014-10-08 2014-10-08 Pieu à vis

Country Status (3)

Country Link
EP (1) EP3006627B1 (fr)
DK (1) DK3006627T3 (fr)
PL (1) PL3006627T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6504388B2 (ja) * 2015-02-17 2019-04-24 日之出水道機器株式会社 貫入杭および貫入杭の貫入方法
AU2017101545B4 (en) * 2017-10-31 2018-12-06 Vin Investments Australia Pty Ltd Ground Anchor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2155504A1 (fr) 1995-08-04 1997-02-05 James Maxwell Wilson Dispositif d'ancrage au sol
FR2863633B1 (fr) 2003-12-10 2007-04-13 Ancrest Sa Dispositif d'ancrage dans le sol
DE202007004565U1 (de) * 2007-03-28 2007-08-30 Krinner Innovation Gmbh Fundamenteinrichtung zur Verankerung von Bauteilen im Erdreich
US20140079491A1 (en) * 2012-09-14 2014-03-20 Clayton Leigh Foster Ground engaging shaft

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
PL3006627T3 (pl) 2018-07-31
EP3006627A1 (fr) 2016-04-13
DK3006627T3 (en) 2018-05-28

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