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WO2004011327A1 - Ancre de veille - Google Patents

Ancre de veille Download PDF

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Publication number
WO2004011327A1
WO2004011327A1 PCT/NL2002/000509 NL0200509W WO2004011327A1 WO 2004011327 A1 WO2004011327 A1 WO 2004011327A1 NL 0200509 W NL0200509 W NL 0200509W WO 2004011327 A1 WO2004011327 A1 WO 2004011327A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
anchor
pile
pipe
soil
Prior art date
Application number
PCT/NL2002/000509
Other languages
English (en)
Inventor
Francois Bernard
Dirk Bauer
Original Assignee
Francois Bernard
Dirk Bauer
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 Francois Bernard, Dirk Bauer filed Critical Francois Bernard
Priority to PCT/NL2002/000509 priority Critical patent/WO2004011327A1/fr
Priority to AU2002319960A priority patent/AU2002319960A1/en
Publication of WO2004011327A1 publication Critical patent/WO2004011327A1/fr

Links

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
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E02D5/803—Ground anchors with pivotable anchoring members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/22—Handling or lashing of anchors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/24—Anchors
    • B63B21/26—Anchors securing to bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/24—Anchors
    • B63B21/38—Anchors pivoting when in use
    • B63B21/40—Anchors pivoting when in use with one fluke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/22—Handling or lashing of anchors
    • B63B2021/225—Marker buoys for indicating position of an anchor, or for providing a line connection between the anchor and the water surface

Definitions

  • the present invention relates to a method for introducing an anchor in the soil, i.e. the seabed.
  • the method is especially suitable for introducing a so-called "sheet anchor" in the seabed.
  • the invention relates to a sheet anchor suitable for use in the method according to the present invention and to an assembly of such a sheet and a pile or pipe.
  • Sheet anchors are used in the offshore technology for anchoring floating objects, such as production platforms, to the seabed.
  • the anchor is positioned on the seabed and the anchor is penetrated into the seabed by pulling on the anchor chain.
  • the sheet anchor is designed in order to be orientated with an angle position with respect to the seabed. The angle between the surface of the seabed and the forward end of the sheet anchor will determine the penetration path of the anchor in the soil. That means that a pulling force exerted on the sheet anchor, in essence directed in a horizontal plane, will lead to a translation of the sheet anchor both in a horizontal plane and in a vertical plane. It is clear that the actual displacement of the anchor both in vertical and horizontal direction will be dependent on i.e. the pulling force, and the soil conditions.
  • a first important drawback of the method according to the prior art is the fact that the final position of the sheet anchor in the soil can not be predicted with a high accuracy. That means that an operator first has to introduce the anchor in the seabed and- thereafter has. to .determine what the actual position of the sheet anchor is.
  • a further important drawback of the method according to the prior art is the fact that the final orientation of the sheet anchor is also a resultant of the soil condition and the pulling force exerted on the sheet anchor. Thereby is it impossible to have the centre line of the sheet anchor to be in essence parallel to the seabed itself. That means that it is impossible to exert substantially vertical pulling force on the sheet anchor, without partially retracting the sheet anchor.
  • a method for introducing an anchor in the soil, i.e. the seabed, the anchor having a sheet-like resistance element according to the present invention comprises the steps of:
  • an anchor line such as an anchor chain
  • attaching the anchor to a guiding element such as a pile or a pipe
  • the sheet anchor is attached to a guiding element.
  • This guiding element for instance is a pile or a pipe.
  • the sheet anchor is attached to a first end of said pile or pipe.
  • a penetration device can be fixed.
  • a penetration device for instance is a vibratory hammer.
  • a vibratory hammer In the prior art is well known to use such a vibratory hammer to introduce a pile -in the seabed. -Because, of.the vibrations of the hammer the sott underneath the assembly of the pile and the anchor will liquify and therefore exert less resistance to the introduction of the assembly.
  • the method according to the present invention provides both a method for accurately introducing the anchor at a target position. Moreover, with the method according to the present invention it is possible to control the orientation of the sheetlike member in that the sheet-like element of the anchor is in essence parallel to the seabed.
  • the anchor line is used for exerting a force on the sheet-like element for changing the orientation thereof with respect to the penetration path.
  • the guiding element is attached to the anchor in order to, in essence, coincide with the centre line of the sheetlike element. Because of this measure the forces exerted on the guiding element will be distributed symmetrically to the sheet-like element.
  • the guiding element is attached to the anchor by means of a hydraulic clamping device.
  • the hydraulic clamping device is adapted to be actuated by means of the penetration device.
  • the method according to the present invention for instance can be performed by using the device according to the earlier application PCT/NL99/00242 (Promaster) in the name of the same applicant.
  • This device is provided with means for accurately approaching a target position on the seabed.
  • this device can be coupled to a penetration device, such as a vibratory hammer. That means that inside the device means -for- producing- hydraulic power will be. available.
  • those means for providing hydraulic power can be used for actuating the penetration device.
  • the guiding element is adapted to enclose the distal end of the anchor line.
  • the distal part of the anchor line such as the anchor chain
  • the anchor line When introducing the sheet anchor according to the present invention, the distal part of the anchor line, such as the anchor chain, must also be introduced in the seabed.
  • the anchor line When the anchor line would not be controlled, the anchor line would be laying on a seabed.
  • the anchor line When introducing the sheet anchor in the soil, the anchor line would be pulling on the anchor and thereby altering the position of the sheet anchor during introduction thereof. Therefore, it is advantageous when also the distal part of the anchor line is enclosed in the guiding element, such as the pile or pipe.
  • the end part of the anchor line adjacent to the assembly is. provided with at least one buoyancy element.
  • the end part of the anchor line adjacent to the assembly is. provided with at least one buoyancy element.
  • the sheet-like element prior to the introduction in the soil thereof is provided with a retrieval line, the line being attached to the sheet-like element for exerting a force in order to move the sheet-like element with respect to the penetration path thereof.
  • the anchor When the anchor is introduced in the soil, it is advantageous to enable retrieval of the anchor from the soil, in order to be able to re-use the anchor.
  • the retrieval line When prior to the introduction of the anchor in the seabed the retrieval line is attached to the sheet-like element, the anchor can be retrieved by first pulling on the sheet-like element by means of the retrieval line, in order to move the sheet-like member towards a position wherein the anchor can be retrieved. This position will resemble the position the sheet anchor had when it was introduced in the soil.
  • the present invention also relates to a sheet anchor, adapted to be introduced in the soil, i.e. the seabed, having a sheet-like resistance element with a forward end, and a trailing end, the anchor having means for attaching a line, such as an anchor chain.
  • the ⁇ sheet ' anchor according'toihe -present invention is characterised in-that the forward - end of the sheet-like element is provided with a cutting edge, symmetrically shaped with respect to the centre line of the sheet-like element, for receiving a symmetrical distributed resistance force on the anchor when introducing the anchor in the soil and in that the trailing end of the sheet-like element is provided with a cutting edge having a shape in order to receive an asymmetrical distributed resistance force when retracting the sheet anchor from the soil.
  • sheet anchor is meant to relate to any anchor having a sheet-like resistance element.
  • the sheet-like element will enter the soil in a straight line. And after positioning the sheet anchor in the soil a pulling force is exerted on the sheet element, automatically an asymmetrical force will be exerted on the sheet element, in order to move the orientation of the sheet element with respect to the penetration path thereof.
  • This movement can be achieved in that the trailing end is provided with a cutting edge asymmetrical shaped with respect to the centre line of the sheet anchor.
  • the trailing end is provided with a cutting edge having a cutting element, moveably attached to the sheet anchor.
  • the sheet-like element of the sheet anchor in the direction of the forward end is tapered, in that the side edges of the sheet-like element include an angle with respect to the forward end larger than 90°.
  • the trailing end of the sheet-like element is tapered, in that the side edges of the sheet-like element include an angle with respect to the trailing end which is larger than 90°.
  • the sheet-like element is provided with means for receiving a pile or pipe.
  • the means for receiving a pile or pipe are adapted for positioning the pile or pipe in substantially the centre of the sheet anchor.
  • the trailing end of the sheet-like element is provided with a retrieval line for retracting the sheet anchor when introduced in the soil.
  • the retrieval line is provided with a buoyancy element, such as a ball or balloon.
  • the .sheet anchor comprises stiffening members.
  • the stiffening elements for instance ribs, are used to enforce the sheet anchor against bending.
  • the present invention relates to an assembly of a sheet anchor according to one of the claims 9-18 and a pile or pipe attached to such anchor.
  • the assembly according to the present invention is characterised in that the pile is positioned in substantially the centre line of the anchor.
  • the connecting means for connecting the pile or pipe to the anchor are provided with cylinders.
  • the means for connecting the pile or pipe towards the anchor are provided with means for transferring a translational movement into a rotational movement. It is for instance possible to move the connecting means using the cylinders. Connecting means thereby are translated in a first direction. The connecting means then can run in a groove, such as a helical groove. The presence of these helical grooves will make connecting means rotate with respect to the sheet anchor. Via this rotational movement the connecting means can reach a final clamping position.
  • the connecting means are provided with a ball and an element for fixing the end of the pile or pipe, the connecting element being connected to the ball.
  • the pile or pipe is provided with a slot for allowing to pass shackles of an anchor chain through the wall of the pile or pipe.
  • the slot in the pile or pipe is provided with elements for providing rigidity to the pile or pipe.
  • Figure 1 shows the assembly of a sheet anchor according to the present invention and a pile, introduced in the soil.
  • Figure 2 shows the removal of the pile, leaving the sheet anchor in the soil.
  • Figure 3 shows the altering of the orientation of the sheet anchor with respect to the penetration path thereof.
  • Figure 4 shows the sheet anchor according to the present invention in frontal view.
  • Figure 5 shows the sheet anchor according to the present invention in side view.
  • Figure 6 shows the sheet anchor according to figure 4 in crosssectional view according-to-the line-NI-VL-
  • Figure 7 shows a first embodiment of a clamping mechanism for clamping a pile or pipe to a ball-connecting element assembly, which ball is connected to the sheet anchor.
  • Figure 8 an embodiment of a clamping mechanism for clamping the pile or pipe to a padeye plate fixed on the sheet anchor.
  • Figure 1 shows the sheet anchor 1 according to the present invention which has been introduced in the soil 2, i.e. the seabed, by means of a pile 3.
  • the assembly of the sheet anchor 1 and the pile 3 will be introduced into the soil 2 by means of a penetration device, such as a vibratory hammer (not shown).
  • the vibrations applied to the assembly of sheet anchor 1 and pile 3 will liquidity the soil 2 underneath the assembly in order to decrease the resistance of the soil.
  • an optimal connection between the pile 3 and the sheet anchor 1 is essential. If such a connection would not be present, the pile would vibrate not only with respect to the soil 2 but also with respect to the sheet anchor 1. In that case the assembly of sheet anchor 1 and pile 3 could not be introduced in the soil 2.
  • Specific examples of the connection between the pile 3 and the sheet anchor 1 will be described with reference to the figures 7 and 8.
  • the sheet anchor 1 comprises a sheet-like body 4 having a forward edge 5 and a trailing edge 6.
  • the underside of the sheet-like element 4 is tapered, in order to facilitate the introduction of the sheet anchor in the soil.
  • the specific form of the sheet anchor will be clarified with reference to figures 4, 5 and 6.
  • reinforcement elements such as ribs, are added. These ribs 7 enhance the resistance of the sheet anchor 1 against bending.
  • a dome-shaped element 8 is present. In this element a ball can be received. The ball will be connected to the distal part of an anchor chain 10. From figure 1 it is clear that the shackles, forming the distal part of the chain 10, are enclosed within the body of the pile 3.
  • the distal part is guided with the sheet anchor when introducing the assembly of the sheet anchor and the pile into the soil 2.
  • the pile is provided with an elongate aperture 11. This elongate aperture 11 will weaken the pile 3.
  • additional plates 12 are fixed over the aperture 11. The plates 12 are strong enough to increase the stiffness and the strength of the pile 3, and are attached to the pile in order to break loose when the pile is removed from' the soil.
  • buoyancy elements 13 are attached to part of the anchor chain 10 that adjoins the anchor chain part that is enclosed in the pile 3.
  • the trailing end 6 of the sheet-like element 4 of the sheet anchor 1 is provided with a retrieval line 14, at the end thereof provided with a buoyancy element 15.
  • the function of this retrieval line 14 will be clarified with respect to figure 3.
  • the pile 3 is removed from the soil 2, leaving the sheet anchor 1 at its position.
  • the plates 12 will break loose in order to allow the removal of the pile 3.
  • the sheet anchor 1 is positioned at a predetermined depth in the seabed. Since the sheet-like element 4 is still in essence in line with the penetration path of the sheet anchor 1, the anchor 1 is not able to withstand substantial forces. In order to be able to function properly, the orientation of the sheet-like element 4 must be altered with respect to the penetration path.
  • FIG 3 it is shown that a force is exerted on the sheet anchor 1 by means of the anchor chain 10. Because of this force, the sheet anchor will be displaced upwards. Because of the specific shape of the sheet-like element 4 during this displacement the sheet-like element 4 will rotate with respect to the seabed 2. When the sheet-like element is in essence parallel to the seabed 2, the position of the sheet anchor 1 is optimal for withstanding forces exerted on the anchor chain 10.
  • the orientation of the sheet-like element 4 has been altered according to figure 3, it is advantageous to be able to retrieve the anchor from the soil.
  • the retrieval is made possible by exerting a force on the retrieval line 14, which is attached to the trailing end 6 of the sheet-like element 4. By exerting a pulling force on the sheet-like element, this element will return to its initial position, meaning the position which has been shown in figure 1. Thereafter the anchor can be retrieved from the soil.
  • FIG. 4 shows a frontal view of the sheet anchor, h figure 4 it is clear that the sheet-like element 4 at the under side thereof is tapered. Because of the presence of the tapered side edges 20 and 21 towards the forward end 5 of the sheet-like-element .4.the-penetration of the sheet anchor 1 in the soil is facilitated. The specific angle between the forward end 5 and the side edges 20, 21 will be dependent on specific soil conditions. Also the total surface area of the element 4 will be dependent on soil conditions. As a rule of thumb, the surface area of the sheet-like element 4 will be smaller, the harder the material of the soil.
  • the upper part of the sheet-like element 4 is provided with a circular channel 22 which more clearly is shown in figure 6.
  • This channel 22 is present in order to enclose the distal part of a pile or pipe to be inserted in the channel.
  • the sheet-like element is provided with a dome-shaped element 8 which element is adapted to receive a ball-shaped rotating element.
  • This ball-shaped element will be connected to a connecting element which forms the most distal part of the anchor chain 10 (see figures 1 and 2).
  • Figure 4 also shows that the upper part of the sheet-like element 4 is tapered. That means that the two sides 23 and 24 enclose an angle which is larger than 90° with the trailing end 6 of the sheet-like element 4. The angle between respective sides 23, 24 and 6 will also be dependent on soil conditions.
  • An important aspect of the sheet anchor 1 according to the present invention is the fact that the cutting edge at the forward end 5 of the sheet anchor 1 is symmetrically shaped. This is shown in figure 5. That means that when introducing the sheet anchor in the soil the resistance force of the soil on this cutting edge will be evenly distributed. That means that it is possible to introduce the sheet anchor 1 according to a straight line into the soil.
  • the cutting edge of the trailing end 6 of the sheet anchor 1 is, contrary to the cutting edge 5, asymmetrically formed. That means that when retracting the sheet anchor 1 from the soil, for instance by pulling on the anchor chain 10, an asymmetrical distributed resistance force will be executed on this cutting end 6. Because of this asymmetrical force 6 during the displacement of the sheet anchor with respect to the soil, the sheet anchor will rotate. During this rotation the orientation of the sheet-like element 4 with respect to the penetration path will alter. This rotation has been shown in figure 3.
  • the sheet-like element 4 is provided with reinforcement elements, such as ribs 7. These ribs can clearly be seen for instance in figure 6.
  • FIG 7 a first embodiment is shown for connecting the distal end of the pile 3 to a connecting element 31 which is connected to a ball 32.
  • the ball 32 will -be enclosed -in the dome .8 which can be. seen in figure _4.
  • the connecting element 31 will be fixed to the most distal shackle 33 of the anchor chain 10.
  • the other shackles of the anchor chain are not shown.
  • cylinders 35 are present. Those cylinders can be driven by means of hydraulics. When the cylinders are activated a sleeve 36 is moved with respect to the outside of the pile 3.
  • the sleeve 36 comprises cams 37 and a projection 38.
  • the connecting element 31, at the outside thereof, is provided with cam slots 39.
  • the cams 37 will be received in the cam slot 39.
  • the connecting element 31 will be rotated with respect to the pile 3, when the cams proceed through the cam slots.
  • the projection 38 will enter the aperture 40 in the connecting element 41.
  • the aperture 40 is L-shaped.
  • the projection 38 is shaped in order to be fixed in the lower part of the projection 40.
  • the sheet anchor 1 is provided with a padeye plate 50.
  • a cylinder assembly 51 is present at the end thereof provided with clamping shoes 52. These clamping shoes, when displaced towards the distal end of the pile 3, will be guided by a tapered end side 53 of the pile 3. By means of the clamping shoes 52 the pile can be clamped on top of the padeye plate 50.
  • Method for introducing an anchor in the soil, i.e. the seabed, the anchor having a sheet-like resistance element comprising the steps of: - providing the anchor with an anchor line, such as an anchor chain,
  • a guiding element such as a pile or a pipe
  • ⁇ 4 Method-according to claim -1-3, wherein-the-guiding elementis attached, to. the . , anchor by means of a hydraulic clamping device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (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)

Abstract

L'invention a trait à un procédé et à un dispositif permettant d'introduire une ancre (1) dans le sol (2), autrement dit dans le fonds marin, ladite ancre possédant un élément de résistance (4) de type feuille. Ledit procédé comprend les étapes consistant : à doter l'ancre (1) d'une ligne d'ancrage, telle qu'une chaîne d'ancrage (10) ; à fixer l'ancre à un élément de guidage (3), tel qu'un pieu ou un conduit ; à déplacer l'ensemble constitué par l'ancre (1) et l'élément de guidage (3) vers une position cible ; à introduire l'ensemble constitué par l'ancre (1) et l'élément de guidage (3) dans le sol (2), au moyen d'un dispositif de pénétration, tel qu'un marteau vibrant, l'axe longitudinal de l'élément de type feuille étant, lors de la pénétration, orienté dans la direction de circulation de l'ancre (1) ; à retirer l'élément de guidage (3) ; et à exercer une force de tirage sur l'élément (4) de type feuille, afin de modifier l'orientation dudit élément (4) de type feuille par rapport à la trajectoire de pénétration.
PCT/NL2002/000509 2002-07-26 2002-07-26 Ancre de veille WO2004011327A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/NL2002/000509 WO2004011327A1 (fr) 2002-07-26 2002-07-26 Ancre de veille
AU2002319960A AU2002319960A1 (en) 2002-07-26 2002-07-26 Sheet anchor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/NL2002/000509 WO2004011327A1 (fr) 2002-07-26 2002-07-26 Ancre de veille

Publications (1)

Publication Number Publication Date
WO2004011327A1 true WO2004011327A1 (fr) 2004-02-05

Family

ID=31185859

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2002/000509 WO2004011327A1 (fr) 2002-07-26 2002-07-26 Ancre de veille

Country Status (2)

Country Link
AU (1) AU2002319960A1 (fr)
WO (1) WO2004011327A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007115387A1 (fr) * 2006-04-10 2007-10-18 Fluke Engenharia Ltda. Ancre pour structure flottante et ses procedes d'installation et de retrait
ES2335950A1 (es) * 2007-06-04 2010-04-06 Elena Julian Mayo Anclaje para boyas de señalizacion marina y procedimiento de implantacion y extraccion del mismo.
WO2012021067A1 (fr) 2010-08-10 2012-02-16 Deep Sea Anchors As Ancre installée par gravité
WO2012131082A1 (fr) 2011-03-30 2012-10-04 Institute Of Technology Sligo Ensemble ancrage
CN103786836A (zh) * 2012-11-01 2014-05-14 余光明 一种投放深水网箱锚碇系统的施工工法
US20150361634A1 (en) * 2014-06-13 2015-12-17 Vicinay Marine Innovacion (Aie) Assembly for mooring a pile with a mooring line and method implemented with said assembly
RU178519U1 (ru) * 2017-12-21 2018-04-06 Федеральное государственное казенное военное образовательное учреждение высшего образования "ВОЕННАЯ АКАДЕМИЯ МАТЕРИАЛЬНО-ТЕХНИЧЕСКОГО ОБЕСПЕЧЕНИЯ имени генерала армии А.В. Хрулева" Грунтовый анкер со съёмной тягой
CN117702795A (zh) * 2023-12-14 2024-03-15 江苏科技大学 一种防止锚链绷起及海床沟槽形成的桩基础及其实施方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3282002A (en) * 1963-12-19 1966-11-01 Taylor H Jefferson Keying device for embedment anchor
US4848261A (en) * 1987-06-19 1989-07-18 Satoru Kobayashi Anchor
US5205234A (en) * 1991-10-25 1993-04-27 Schoell Harry L Anchor and winch
US5540175A (en) * 1991-08-16 1996-07-30 Vrijof Ankers Beheer B.V. Anchor, anchorfluke and methods for anchoring
US5899165A (en) * 1996-08-30 1999-05-04 Petroleo Brasileiro S.A.--Petrobras Plate-type anchor and the respective process for installing it
WO2001096670A1 (fr) * 2000-06-12 2001-12-20 Graham Hargrave Menz Ancre a grande capacite

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3282002A (en) * 1963-12-19 1966-11-01 Taylor H Jefferson Keying device for embedment anchor
US4848261A (en) * 1987-06-19 1989-07-18 Satoru Kobayashi Anchor
US5540175A (en) * 1991-08-16 1996-07-30 Vrijof Ankers Beheer B.V. Anchor, anchorfluke and methods for anchoring
US5205234A (en) * 1991-10-25 1993-04-27 Schoell Harry L Anchor and winch
US5899165A (en) * 1996-08-30 1999-05-04 Petroleo Brasileiro S.A.--Petrobras Plate-type anchor and the respective process for installing it
WO2001096670A1 (fr) * 2000-06-12 2001-12-20 Graham Hargrave Menz Ancre a grande capacite

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007115387A1 (fr) * 2006-04-10 2007-10-18 Fluke Engenharia Ltda. Ancre pour structure flottante et ses procedes d'installation et de retrait
ES2335950A1 (es) * 2007-06-04 2010-04-06 Elena Julian Mayo Anclaje para boyas de señalizacion marina y procedimiento de implantacion y extraccion del mismo.
ES2335950B1 (es) * 2007-06-04 2011-02-21 Elena Julian Mayayo Anclaje para boyas de señalizacion marina y procedimiento de implantacion y extraccion del mismo.
WO2012021067A1 (fr) 2010-08-10 2012-02-16 Deep Sea Anchors As Ancre installée par gravité
NO331792B1 (no) * 2010-08-10 2012-04-02 Deep Sea Anchors As Et gravitasjonsinstallert anker og fremgangsmate for installasjon av ankeret
WO2012131082A1 (fr) 2011-03-30 2012-10-04 Institute Of Technology Sligo Ensemble ancrage
US9150285B2 (en) 2011-03-30 2015-10-06 Stevlos B.V. Anchor assembly
CN103786836A (zh) * 2012-11-01 2014-05-14 余光明 一种投放深水网箱锚碇系统的施工工法
US20150361634A1 (en) * 2014-06-13 2015-12-17 Vicinay Marine Innovacion (Aie) Assembly for mooring a pile with a mooring line and method implemented with said assembly
RU178519U1 (ru) * 2017-12-21 2018-04-06 Федеральное государственное казенное военное образовательное учреждение высшего образования "ВОЕННАЯ АКАДЕМИЯ МАТЕРИАЛЬНО-ТЕХНИЧЕСКОГО ОБЕСПЕЧЕНИЯ имени генерала армии А.В. Хрулева" Грунтовый анкер со съёмной тягой
CN117702795A (zh) * 2023-12-14 2024-03-15 江苏科技大学 一种防止锚链绷起及海床沟槽形成的桩基础及其实施方法

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