EP0301113B1 - Dispositif pour sectionner des pieux tubulaires de fondation sous l'eau - Google Patents

Dispositif pour sectionner des pieux tubulaires de fondation sous l'eau Download PDF

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Publication number
EP0301113B1
EP0301113B1 EP87110888A EP87110888A EP0301113B1 EP 0301113 B1 EP0301113 B1 EP 0301113B1 EP 87110888 A EP87110888 A EP 87110888A EP 87110888 A EP87110888 A EP 87110888A EP 0301113 B1 EP0301113 B1 EP 0301113B1
Authority
EP
European Patent Office
Prior art keywords
pile
carrier shaft
tool
carrier
protective tube
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.)
Expired - Lifetime
Application number
EP87110888A
Other languages
German (de)
English (en)
Other versions
EP0301113A1 (fr
Inventor
Hans Kühn
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.)
Menck GmbH
Original Assignee
Menck GmbH
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 Menck GmbH filed Critical Menck GmbH
Priority to EP87110888A priority Critical patent/EP0301113B1/fr
Priority to DE8787110888T priority patent/DE3778542D1/de
Priority to NO873377A priority patent/NO170894C/no
Priority to JP62254523A priority patent/JPH0678620B2/ja
Priority to US07/133,903 priority patent/US4856938A/en
Publication of EP0301113A1 publication Critical patent/EP0301113A1/fr
Application granted granted Critical
Publication of EP0301113B1 publication Critical patent/EP0301113B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
    • E02D9/04—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by cutting-off under water
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/12—Underwater drilling
    • E21B7/124—Underwater drilling with underwater tool drive prime mover, e.g. portable drilling rigs for use on underwater floors

Definitions

  • the invention relates to a device for separating tubular foundation piles under water, the wall of the pile being severed by a separating tool introduced into the interior thereof.
  • JP-A-56-159426 a device according to the preamble of claim 1 for the separation of steel pipe foundation piles which protrude from the water is known.
  • the device is placed over the water level on the pipe end, so that a simple visual check can be made when threading into the pile.
  • a drive shaft protruding into the pile and rotatable by an electric motor carries the cutting tool consisting of a cutting tool. The cutting tool can be pressed hydraulically against the wall of the pile.
  • the object of the invention is, based on JP-A-56-159426, to provide a device for separating tubular foundation piles under water, in which handling is facilitated even in large water depths, in particular when separating inclined foundation piles, and damage to the separating device is avoided .
  • a device for separating tubular foundation piles under water of the type mentioned at the outset is provided with the features of claim 1.
  • This device can be lowered on the crane rope of a work ship and placed so centered on the upper edge of the tubular foundation pile that is to be separated that the elongated, downwardly protruding protective tube that surrounds the supporting shaft projects centrally into the foundation pile with sufficient play.
  • the clamping devices then fix the implement against the peripheral wall of the pile, so that simultaneous centering and reliable mounting against vertical and horizontal movements, as well as against any torques acting on the cutting tool when cutting the pile wall, are achieved.
  • the device When using an electro-hydraulic work unit with hydraulic motors that is lowered under the working device to turn the supporting shaft or the tool holder as well as pumps driven by electric motors, either connected in a closed circuit with a pressure medium container carried along or simply sucking in ambient water in the open circuit, the device can also be used in very large water depths without long pressure medium lines with high efficiency. If the advantageously tubular support shaft or the tool carrier is equipped with cutting edges at the lower end, the sediments deposited in the foundation pile to be separated can be simultaneously loosened and washed away when the support shaft is inserted into the interior of the foundation pile, so that even with one initially almost completely with solids filled pile, the cutting or burning tool can be inserted to the depth provided for the desired separating cut.
  • the implement 1 shown in FIGS. 1 and 2 is lowered on the crane rope 6 of the crane 12 of a work ship 7 next to an oil rig leg 10 under water onto a pile 8, which is attached to a pole bracket attached to the oil rig leg 10 by an annular gap between the pile and the Pile bracket 9 filling concrete layer 11 is permanently connected.
  • the working device 1 has an electro-hydraulic drive unit 5, which is supplied with electrical energy via a umbilical 16 hanging from a winch 15 of the working ship 7.
  • the umbilical 16 also contains the necessary signal and control lines in a conventional manner.
  • the implement 1 also has an elongated, downwardly protruding protective tube 4, through the interior of which a support shaft 3 extends concentrically, which carries a tool holder 2 at its protruding lower end.
  • An insertion cone 13 is also arranged around the protective tube 4.
  • the length of the implement 1 is dimensioned such that it can be tilted into the position shown in broken lines in FIG. 1 after the conical tool carrier 2 has been inserted into the top opening of the tubular pile 8 by slightly lowering the boom 12 to collide with the pile guide 14 attached to the platform leg. From this position, the implement 1 is then in the in Fig. 2nd shown position lowered, the insertion cone 13 automatically centers the implement 1 on the pile 8 so that the support plate 17 sits on the upper edge of the pile 8.
  • clamping jaws 19, which are formed in the illustrated embodiment as segments of the insertion cone 13, are pressed against the outer peripheral wall of the pile 8, so that the implement is centered on this is clamped and can also absorb any forces resulting from the torque of a cutting tool working on the inner wall of the pile 8.
  • the implement 1 is slimmer so that it can sit on the upper edge of the pile 8 deep in the pile holder 9.
  • pressure cylinders 20 are provided within the protective tube 4 around the support shaft 3 on the base plate 17, which press the associated clamping jaws 21 through openings 22 in the protective tube 4 against the inner wall of the pile 8.
  • the pressure medium supply lines required for actuating the pressure cylinders 20, which are usually connected to a hydraulic accumulator, the return lines to a pressure medium container and the associated changeover valves have not been shown for reasons of clarity.
  • the implement 1 is placed on the upper edge of the pile 8, which is guided deep below in the drilling rig leg 10, and has a compensator 23 attached to the top of the drive unit 5, which is attached to two support cables 24 and 25 on the crane 12 of the work ship 7 is suspended.
  • the umbilical 16 runs from the winch 15 through the hollow piston rod 26 of the compensator 23 to the drive unit 5.
  • the compensator 23 serves to compensate for the relative movements between the implement 1 resting firmly on the pile 8 and the work ship 7 or moving in the sea. the boom of the crane 12.
  • the compensator 23 has a cylinder 28 which is divided into an upper chamber 29 and a lower chamber 35 by a piston 27 connected to the piston rod 26.
  • the carrying cables 24 and 25 are held taut by the weight of the piston 27 and the piston rod 26.
  • the chambers 29 and 35 there is water which, when the piston 27 moves upwards, can escape from the upper chamber 29 through openings 30 in the cylinder cover 31 and, when the piston 27 moves downwards, can flow in reverse through these openings 30 into the upper chamber 29.
  • the openings 30 are dimensioned in such a way that they provide little flow resistance to the upward movement corresponding to the relatively slow swell and this can take place practically unhindered.
  • the openings 30 act together with one Annular gap 32 between the piston 27 and the wall of the cylinder 28 strongly inhibiting and reduce the falling speed of the implement 1 to such an extent that the remaining kinetic energy is absorbed by the supporting cables 24 and 25 when the mass is intercepted and the implement copes with the interception shock without damage.
  • the lower chamber 29 of the cylinder 28 has openings 34 through which water can flow in and out. These openings 34 must be designed to be larger than the openings 30, since the weight of the entire implement acts on the piston 27 via the water cushion in the chamber 29 during the upward movement of the piston 27, but only the weight of the piston 27 and the piston rod 26. This downward movement must not be reduced by flow-related delays, so that the support cables 24 and 25 always remain taut and cannot get caught anywhere.
  • the length of the implement 1 is greater which is advantageous for guiding it, since it is thereby always guided in at least two guides 10 a of the oil rig leg 10.
  • the carrying cables 24 and 25 are shown rotated by 90 ° in FIG. 4 to show that they run next to the umbilical 16.
  • the implement 1 is placed in a vertical drilling leg 10 on the pile 8 and carries on its top an extension tube 36 to achieve the desired guide length.
  • a hydropneumatic compensator 37 of the type described in the German patent application P 35 46 277.9 of the applicant is inserted into the support cables 24 and 25.
  • the braking effect can also be better adapted to the respective weight of the implement 1 by adjusting the gas preload pressure.
  • these advantages can only be achieved because a pulling force exerted on the implement 1 by the high gas preload when the compensator is pulled apart by an upward wave movement can be absorbed by the frictional engagement of the clamping jaws 21.
  • only the pressure of the pressure medium supplied to the pressure cylinders 20 needs to be increased.
  • the drive unit 6 has a drive unit 5 with a closed pressure medium circuit, which has a series of pump units, each with a hydraulic pump 39 flanged to an electric motor 38, each of which has a connecting line 40 with a hydraulic motor 41 and a connecting line 42 with a pressure medium container 43 connected is.
  • the support shaft 3, which is driven by the hydraulic motors 41 via a gear 44, is mounted concentrically in the drive unit 5 on the one hand in a bearing 57 of the support plate 17 and on the other hand in a bearing 56 of the cover plate.
  • the drive unit 5 has an outer jacket wall 47 connecting the support plate 17 to the cover plate and an inner wall 46 which is concentric with the latter and which is elastically cushioned against the support plate 17 and the cover plate by prestressed spring devices.
  • the Pump units are in each case attached to the inner wall 46 distributed over their circumference in the annular space between the latter and the casing wall 47 via supporting projections 48 and elastic support elements 49. Also arranged in the annular space 45 is a water pump 51 which is connected to an electric motor 50 and which draws in ambient water via a suction opening 52 and a filter sieve 52a and feeds it to a purpose explained below by increasing the pressure via a connecting line 53.
  • the electric motors 38 and 50 are each supplied with electrical energy from the work ship 7 via electrical lines 54 and 55 contained in the umbilical 16.
  • all electric motors 38 and 50 are each connected to a flanged pressure water pump 79, which draws in ambient water via the suction opening 80 and the filter sieve 80a and the pressure water via the connecting lines 81 and 40 to the hydraulic motors 41 for driving the Carrying shaft 3 via the gear 44.
  • the pressurized water then emerges freely from the outlet port 82 into the environment, so that there is an overall pressure medium circuit that is open to the environment.
  • the electric motors 38 and 50 are supplied with electrical energy via the electrical lines 54 and 55 guided in the umbilical 16.
  • the support shaft 3 is additionally mounted centrally in a bearing 58 arranged on the protective tube 4 near its lower end and connected at its free end to an exchangeably fastened tool carrier 2 which tapers spherically on the underside and there with cutting edges 59 is provided.
  • Clamping jaws 61 are pivotally mounted in lateral openings of the protective tube 4 and can be pressed against the inner wall of the pile 8 by associated hydraulic cylinders 62.
  • the tool carrier 2 is driven during the insertion of the protective tube 4 into the pile 8 via the support shaft 3 in the manner of a drill in order to release the settled sediments by means of the cutting edges 59.
  • pressurized water can be led down from the water pump 51 to the tool carrier 2 via a connecting line 53, in order to soften the sediments and, after loosening, flush them out upwards out of the pile 8 via the through-channel 60 of the tubular supporting shaft 3.
  • the propulsive force required for the penetration is caused by the weight of the implement.
  • the clamping jaws 61 Since no large torques occur when the layers of sediment are peeled off, the clamping jaws 61 only need to be slightly pressed against the inner wall of the pile in order to prevent the implement 1 and thus also the umbilical 16 and the supporting cables 6 or 24 and 25 from being twisted, so that they Although the low torque is absorbed by friction, on the other hand the implement 1 can sag automatically under its own weight in accordance with the progress of penetration. If a firmer frictional connection is required, the clamping jaws 61 can of course also be released briefly each time while the supporting shaft 3 is stopped and, after the implement 1 has sagged, can be pressed back onto the inner wall of the pile 8.
  • a tool slide 64 is slidably guided in a horizontal guide.
  • a cutting tool 65 shown only schematically in FIG. 8 and designed as cutting steel, is attached to the tool slide 64 and produces the desired separating cut in the wall of the pile 8 when the supporting shaft 3 and the tool carrier 2 are rotated.
  • the cutting tool 65 can be infinitely adjusted by moving the tool carriage 64 by means of a hydraulic actuating cylinder 66 in order to appropriately adjust the chip thickness in accordance with the processing progress.
  • a plurality of underwater cameras 63 are arranged on the inside of the protective tube 4 on the inside over its circumference. Instead, an underwater camera attached to the support shaft 3 or to the tool carrier 2 and rotating with it can also be provided.
  • the supply lines of the underwater cameras which are not shown in FIG. 8 for reasons of clarity, can run on the inner wall of the protective tube 4 or via the supporting shaft 3 and a conventional slip ring rotary connection to the drive unit 5.
  • a tool slide 67 which is adjustable in a horizontal guide by means of a hydraulic actuating cylinder 78 and which carries an underwater gas flame cutting torch 77, is mounted on the tool carrier 2 provided with conical cutting edges 59.
  • the actuating cylinder 78 is fastened to a support block 68, on which a further actuating cylinder 69 for a second tool slide 70 is attached.
  • This carries a drilling device 71 with a drilling tool 72 driven by a hydraulic motor 73.
  • the drilling device 71 which is driven via pressure medium lines 74 and 75 running in the passage 60 of the supporting shaft 3, is used to create a hole 76 in the wall of the pile 8, that facilitates the approach of the cutting flame to the cut.
  • the cutting torch 77 is supplied with fuel gas via a supply line 102 from a gas container carried on the drive unit 5 but not shown.
  • cutting and firing tools can also be used, for example for liquid pressure jet cutting with a high-pressure water jet which may be enriched with abrasion particles, or for electric consumable burn-off.
  • the pressure medium is supplied from a power station via water via a supply line 83, a distributor 85 and connecting lines 86 and 87 to the hydraulic motors 41 and then flows via the connecting lines 88 and 89, the Distributor 85 and a supply line 84 back to a pressure medium tank over water.
  • the connecting lines 87 and 88 can be shut off by the valve device 90 as needed to shut down the drive.
  • the support plate 17 provided on its underside with pressure cylinders 18 and as segments of the insertion cone 13 is firmly connected via a spacer ring 95 by screws 96 to a support plate 91 and in turn carries the protective tube 4 on its underside.
  • the support plate 17 arranged bearings 56 and 57 prevent 3 vertical displacements in cooperation with an annular collar 101 of the supporting shaft.
  • the transmission 44 which is only shown schematically, is driven directly by electric motors 97.
  • the extension tube 36 enclosing the electric motors 97 or a compensator 23 according to FIG. 4, the outer diameter of which can be adapted to the respective requirements.
  • the electric motors 97 are driven via the umbilical 16, the distributor 98 and connecting lines 99 and 100.
  • the implement 1 hanging on the suspension cable 6 of the crane 12 of a work ship 7 according to FIG. 10 is lowered with the conical tool carrier 2 into the opening of the pile 8, which is guided in a pile holder 9 at the foot of an oil rig leg 10 is.
  • an electro-hydraulic underwater drive unit 5 of the type shown in FIG. 6 hangs on a further suspension cable 94 of the crane 12, the hydraulic pumps 39 of which are connected to the distributor of the implement 1 via connecting lines 92.
  • the drive unit 5 is supplied with electrical energy by the work ship 7 via the umbilical 16.
  • the short design of the implement 1 also makes the last one relatively short Pile guide 93 above the pile holder 9 still allows the implement to be inserted into the pile 8. This mode of operation is advantageous in many cases despite the separate lowering of the drive unit 5 required.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Earth Drilling (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Claims (8)

  1. Dispositif pour couper des pieux de fondation, tubulaires, sous l'eau, à l'aide d'un outil (1) susceptible d'être mis en place sur le bord supérieur du pieu à couper, d'un axe de support (3), qui descend dans le volume intérieur du pieu, ainsi que d'un outil de coupe (65, 77) porté par l'axe de support, l'outil comportant des dispositifs de serrage (18, 19, 20, 21) pour se bloquer contre la paroi du pieu et des dispositifs (39, 41, 97) pour faire tourner l'outil de coupe, l'outil de coupe étant monté déployable ou pivotant sur un porte-outil ou sur l'axe de support (3) grâce à un vérin de positionnement (66, 69) correspondant, suivant un mouvement essentiellement radial, dispositif caractérisé en ce que l'outil de coupe se compose d'un outil de coupe ou d'un dispositif d'oxy-coupage (77) et comprend un tube de protection (4) entourant à une certaine distance, l'axe de support (3), avec un jeu suffisant pour être introduit dans le pieu, le tube de protection (4) comportant au moins un mors (61) susceptible d'être appliqué sous pression par un vérin de pression (62) contre la paroi intérieure du pieu (8), en comportant dans sa partie inférieure un cône d'introduction (13) prévu autour de l'axe de support (3), cône qui, en position de fonctionnement, entoure extérieurement le bord supérieur du pieu (8) appliqué contre une plaque d'appui (17).
  2. Dispositif selon la revendication 1, caractérisé en ce que l'axe de support (3) est fixé rigidement à l'outil (1) et porte à son extrémité inférieure un support d'outil (2) monté de manière à tourner coaxialement, support qui peut être entraîné par au moins un moteur hydraulique prévu directement à côté, sur l'axe de support (3), par l'intermédiaire de conduites d'alimentation passant dans l'axe de support (3).
  3. Dispositif selon l'une des revendications 1 et 2, caractérisé en ce que l'axe de support (3) ou le porte-outil (2) prévu sur cet axe comporte des arêtes de couteau (59) ou des buses pour détacher des matériaux sédimentaires accumulés à l'intérieur du pieu (8).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce qu au moins une conduite de rinçage (53) partant d'une pompe à eau (51) arrive jusqu'à l'extrémité inférieure de l'axe de support (3) ou du porte-outil pour évacuer un rinçage des matériaux déposés, détachés, à travers l'axe de support (3) de forme tubulaire.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que l'axe de support (38) ainsi que le tube de protection (4) sont réglables longitudinalement de manière télescopique ou peuvent être modifiés en longueur par au moins un segment de prolongement monté de manière amovible.
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que les dispositifs d'entraînement hydrauliques comportent au moins un moteur hydraulique (41) entraîné par une ou plusieurs pompes (39, 79) pour faire tourner l'axe de support (3) ou le porte-outil (2).
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé par au moins un moteur hydraulique (41) relié à une ou plusieurs pompes à eau (79) de l'outil (1) pour augmenter la pression de l'eau environnante, aspirée.
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que des moteurs électriques (38) reliés aux pompes hydrauliques (39) ou aux pompes à eau (79) ainsi que des pompes hydrauliques (39) ou des pompes à eau (79) et le cas échéant également le réservoir de fluide sous pression (43) sont logés de manière suspendue, réciproquement au moins dans la direction verticale dans l'unité d'entraînement (5).
EP87110888A 1987-07-28 1987-07-28 Dispositif pour sectionner des pieux tubulaires de fondation sous l'eau Expired - Lifetime EP0301113B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP87110888A EP0301113B1 (fr) 1987-07-28 1987-07-28 Dispositif pour sectionner des pieux tubulaires de fondation sous l'eau
DE8787110888T DE3778542D1 (de) 1987-07-28 1987-07-28 Vorrichtung zum abtrennen rohrfoermiger gruendungspfaehle unter wasser.
NO873377A NO170894C (no) 1987-07-28 1987-08-12 Innretning for aa adskille roerformede fundamentpaeler undervann
JP62254523A JPH0678620B2 (ja) 1987-07-28 1987-10-07 水中における管状の基礎杭の切断方法および装置
US07/133,903 US4856938A (en) 1987-07-28 1987-12-15 Method of and arrangement for separating tubular foundation piles under water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87110888A EP0301113B1 (fr) 1987-07-28 1987-07-28 Dispositif pour sectionner des pieux tubulaires de fondation sous l'eau

Publications (2)

Publication Number Publication Date
EP0301113A1 EP0301113A1 (fr) 1989-02-01
EP0301113B1 true EP0301113B1 (fr) 1992-04-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP87110888A Expired - Lifetime EP0301113B1 (fr) 1987-07-28 1987-07-28 Dispositif pour sectionner des pieux tubulaires de fondation sous l'eau

Country Status (5)

Country Link
US (1) US4856938A (fr)
EP (1) EP0301113B1 (fr)
JP (1) JPH0678620B2 (fr)
DE (1) DE3778542D1 (fr)
NO (1) NO170894C (fr)

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US7258597B2 (en) * 2005-11-09 2007-08-21 Oceaneering International, Inc. Subsea abrasive jet cutting system and method of use
US20080028619A1 (en) * 2006-06-23 2008-02-07 The Stanley Works Heavy duty material processing shears
US20070296229A1 (en) * 2006-06-23 2007-12-27 The Stanley Works Grappling system
GB2448358B (en) * 2007-04-12 2009-07-08 Tidal Generation Ltd Installation of underwater ground anchorages
JP5492792B2 (ja) 2008-03-05 2014-05-14 ヘモスフィア，インコーポレイテッド 血管アクセスシステム
US20110295181A1 (en) 2008-03-05 2011-12-01 Hemosphere, Inc. Implantable and removable customizable body conduit
NL2003656C2 (nl) * 2009-10-16 2011-04-19 Ihc Holland Ie Bv Samenstel van telescopische buisdelen.
EP2395156A1 (fr) * 2010-06-08 2011-12-14 IHC Holland IE B.V. Procédé et système d'installation d'éléments de fondation dans une formation de sol sous-marin
DE102011052399B4 (de) 2011-08-04 2014-11-13 Aker Wirth Gmbh Verfahren und Vorrichtung zum Abtrennen von Rohren
CA2845635C (fr) 2011-09-06 2016-06-07 Hemosphere, Inc. Systeme d'acces vasculaire dote d'un connecteur
NL2008279C2 (en) * 2012-02-13 2013-08-14 Ihc Holland Ie Bv A template for and method of installing a plurality of foundation elements in an underwater ground formation.
EP2703564B1 (fr) * 2012-08-30 2016-04-27 BAUER Maschinen GmbH Cadre de guidage pour guider un dispositif de fraisage
EP3082654B8 (fr) 2013-12-20 2019-05-08 Merit Medical Systems, Inc. Système d'accès vasculaire ayant des éléments de renforcement
US9464399B2 (en) * 2014-01-28 2016-10-11 Ats Smart Solutions, Llc Pile cutter
EP3568173A4 (fr) 2017-01-12 2020-11-25 Merit Medical Systems, Inc. Procédés et systèmes de sélection et d'utilisation de raccords entre des conduits
EP3573682A4 (fr) 2017-01-25 2020-11-04 Merit Medical Systems, Inc. Procédés et systèmes pour faciliter un écoulement laminaire entre des conduits
EP3600150B1 (fr) 2017-03-24 2023-05-17 Merit Medical Systems, Inc. Ensembles vasculaires sous-cutanés pour améliorer la circulation sanguine
CN106836223B (zh) * 2017-04-11 2022-06-21 国强建设集团有限公司 一种拔桩方法
CN110374020B (zh) * 2019-06-20 2020-11-03 安徽建开建设工程有限公司 钢筋混凝土桩柱水中焊割切除施工方法及其辅助用具

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Also Published As

Publication number Publication date
NO873377D0 (no) 1987-08-12
NO170894C (no) 1992-12-23
DE3778542D1 (de) 1992-05-27
EP0301113A1 (fr) 1989-02-01
JPH0678620B2 (ja) 1994-10-05
JPH01102127A (ja) 1989-04-19
NO170894B (no) 1992-09-14
US4856938A (en) 1989-08-15
NO873377L (no) 1989-01-30

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