EP2695998A2 - Procédé de fabrication d'un pieu injecté sous pression au-dessous de la surface de l'eau - Google Patents

Procédé de fabrication d'un pieu injecté sous pression au-dessous de la surface de l'eau Download PDF

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Publication number
EP2695998A2
EP2695998A2 EP20130178036 EP13178036A EP2695998A2 EP 2695998 A2 EP2695998 A2 EP 2695998A2 EP 20130178036 EP20130178036 EP 20130178036 EP 13178036 A EP13178036 A EP 13178036A EP 2695998 A2 EP2695998 A2 EP 2695998A2
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EP
European Patent Office
Prior art keywords
threaded rod
guide element
anchor nut
water surface
borehole
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Withdrawn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
EP20130178036
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German (de)
English (en)
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EP2695998A3 (fr
Inventor
Herbert Neidhardt
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2695998A2 publication Critical patent/EP2695998A2/fr
Publication of EP2695998A3 publication Critical patent/EP2695998A3/fr
Withdrawn legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/42—Foundations for poles, masts or chimneys
    • 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

Definitions

  • the invention relates to a method for producing an injection pile below a water surface, comprising the steps of: inserting a threaded rod into a borehole located below a water surface filled or to be filled with a binder suspension, the threaded rod having a first and a second end and beginning with its Lowering a head plate with a recess via the second end of the threaded rod until the head plate reaches an upper end of the borehole, lowering an anchor nut to the second end of the threaded rod, wherein the anchor nut has an internal thread, which is formed corresponding to an external thread of the threaded rod, and screwing the anchor nut on the second end of the threaded rod.
  • Field of application of the invention are in particular injection piles for the anchoring of an underwater concrete (UWB) -sole.
  • UWB underwater concrete
  • Structures such as road, rail and river underpasses (rivers, lakes, canals, etc.) are often in the groundwater of the ground to produce.
  • parts of structures of all kinds such as basement floors, underground garages, sewage treatment plants, lock chambers, bridge abutments, etc.
  • Inflating the UWB sole or the entire construction pit enclosure after pumping out the groundwater within the excavation pit is characterized by a corresponding thickness and thus heaviness of the UWB sole, connection of the UWB sole to the construction pit walls, anchoring of the UWB sole by means of vertical anchors or to prevent piles in the underlying subsoil or a combination of the aforementioned in whole or in part.
  • the drilling in and grouting of the piles after the excavation of the soil and after concreting the UWB sole has construction-related and technical advantages.
  • the trades earth and concrete work can complete their services one after the other without hindrance and without reworking before the injection piles are drilled and pressed. Otherwise, the excavation and concreting would be hindered, reworking of these two trades would be unavoidable and damage to the previously produced piles could not be ruled out.
  • the injection piles can be produced with a compression pressure that reaches up to the excavation bottom, which would otherwise not be possible.
  • a higher load bearing capacity of the piles is made possible and a professional transitional area pile shaft / UWB sole made lighter and safer work. All this ensures in particular a much shorter construction time.
  • anchors or piles can then be used in the course of the construction of a structure on the UWB sole as elements of a deep foundations of the building.
  • the present patent application is directed in particular to the application that the piles or anchors are drilled and possibly pressed after the introduction and hardening of the UWB sole.
  • Another object of the present invention is to provide auxiliary elements and their use which simplify and / or improve the production of an injection pile below a water surface.
  • This object is achieved according to a first aspect of the invention by a method of the type mentioned, in which the threaded rod is detachably connected at its second end to a first end of a guide member, the head plate is lowered with its recess on the guide member, the anchor nut on the guide member is lowered, the anchor nut is screwed by placing a first end of a rotary tool on the anchor nut, wherein a second end of the rotary tool is disposed above the water surface, and by driving the rotary tool.
  • an injection pile or anchor is introduced into a borehole, wherein the borehole is located below a water surface, for example below the groundwater level.
  • the borehole is preferably produced by means of an at least partially tubular boring element, for example a drill pipe.
  • an at least partially tubular boring element for example a drill pipe.
  • the binder can be filled into the drill pipe and into the annulus between drill pipe and borehole wall. Then, the insertion of the threaded rod takes place in the interior of the drill pipe.
  • the threaded rod is preferably centered in the drill pipe so that a longitudinal axis of the threaded rod is concentric with a longitudinal axis of the borehole. Thereafter, the drill pipe is pulled out of the borehole opposite to a propulsion direction so that the threaded rod remains in the borehole filled with the binder.
  • a first lower end of the threaded rod is preferably located in the wellbore area, wherein a second end of the threaded rod protrudes from the wellbore above the upper end of the wellbore.
  • the method according to the invention finds application in securing an underwater concrete sole.
  • a wellbore is drilled in an underwater concrete sole to a predetermined depth below the underwater concrete sole.
  • the injection pile and the anchor plate attached top plate anchor the underwater concrete sole in the ground and secure them against buoyancy.
  • the invention is based inter alia on the finding that the previously required, cost-intensive cooperation of one or more divers can be dispensed with by the use of a guide element and a turning tool when introducing an injection pile.
  • the guide element can serve to position the threaded rod in a controlled manner from above the water surface in the borehole. In this case, by appropriate positioning and movement of the guide element influence on position and orientation of the threaded rod can be taken from above the water surface.
  • the guide element serves to guide the top plate and the anchor nut when lowering towards the threaded rod, so that the head plate can slide over the threaded rod and the anchor nut is guided to the beginning of the thread along the guide element.
  • a turning tool which is placed at its first end on the anchor nut and disposed at its second end above the water surface, makes diving work in the preparation of a Verpresspfahls below the water surface superfluous.
  • the rotary tool is placed on the guide nut on the anchor nut. That the rotary tool is preferably tubular in sections, so that when placing the rotary tool, the guide element extends at least partially within the rotary tool and the rotary tool is guided during lowering by means of the guide member.
  • the guide element is preferably formed substantially rod-shaped, and preferably connected to the threaded rod so that the guide element is an extension of the threaded rod.
  • the guide element is preferably dimensioned such that, when it is connected to the threaded rod and this is inserted into the borehole, it extends over the water surface.
  • the rotary tool has a length in the order of 3 to 30m, in particular from 5 to 10m, depending on the depth of the water, ie the distance from the water surface to the upper end of the threaded rod. More preferably, the rotational connection at the second end of the rotary tool for placement a ratchet be formed. Furthermore, the rotary tool preferably has at its first end a blind-hole-like recess for engagement with the anchor nut, preferably with positive engagement. For example, if the anchor nut has a hexagonal or octagonal outer cross section, the rotary tool is preferably provided at its first end with a corresponding hexagonal or octagonal recess.
  • the threaded rod has a length greater than the depth of the borehole so that even when inserted, the threaded rod protrudes to the bottom of the borehole above an upper end of the borehole and provides this protruding end with, for example, a top plate and an anchor nut can be.
  • the threaded rod preferably has an external thread.
  • the male thread extends radially outwardly beyond a core diameter of the threaded rod (i.e., the diameter of the male threaded rod without a male thread).
  • the internal thread of the anchor nut preferably engages in the external thread of the threaded rod, whereby the head plate is secured to the threaded rod.
  • the recess of the top plate, through which the guide element is guided, is preferably circular, wherein the cross section of the recess is preferably larger than the cross section of the guide element and larger than the outer cross section of the threaded rod, i. the core cross section plus thread cross section is.
  • the method according to the invention is characterized by the step: welding the anchor nut with the top plate before screwing.
  • the welding is preferably used to hold the top plate to the anchor nut.
  • the connection between the anchor nut and top plate for example, consist of an attachment of the top plate to the anchor nut by welds.
  • the welding can be done at any time before lowering the top plate and the anchor nut.
  • the anchor nut and top plate can be supplied welded from the factory.
  • the welding of an anchor nut and a top plate can be done directly on the construction site.
  • anchor nut and top plate prevents in particular that the top plate during lowering at the transition between the guide element and threaded rod or on the threaded rod, in particular the external thread of the threaded rod, tilted.
  • the first end of the guide element has a diameter which corresponds to a core diameter of the threaded rod.
  • the anchor nut is stopped when lowered at the first end of the guide member by the thread of the threaded rod.
  • a further movement of the anchor nut along the threaded rod can be done by screwing the anchor nut on the threaded rod.
  • the anchor nut arrives exactly concentric with the threaded rod at its second, upper end when lowering (and before screwing) and not offset to one side, which would make screwing difficult.
  • the first end of the guide element is conical or frusto-conical in shape.
  • a further development of this type is particularly advantageous if the diameter of a rod-shaped guide element is smaller than the core diameter of the threaded rod.
  • a conical or frusto-conical transition between guide element and threaded rod is created, which tapers upwards.
  • the anchor nut and / or the top plate are then guided during lowering along the guide element with a flush transition to the threaded rod.
  • the first end of the guide element widened preferably conical or frustoconical to a diameter corresponding to the core diameter of the threaded rod.
  • Such a truncated cone-shaped element having the smallest cross section corresponding to the cross section of the guide element and having the largest cross section of the core cross section of the threaded rod may be integrally formed with the first end of the guide member or screwed or welded to the first end of the guide member.
  • a blind hole is formed at the first end of the guide element, in particular at the larger end of the conical or frusto-conical element with an internal thread for engagement with an external thread of a threaded bolt, which is arranged on the second end of the threaded rod is.
  • This will be a particularly advantageous releasable connection provided between the threaded rod and the guide element.
  • the guide element and the threaded rod for example, be screwed together before insertion into the wellbore.
  • the guide element - after securing the top plate to the threaded rod - are unscrewed from the threaded rod.
  • the threaded bolt is arranged centrally on the second end of the threaded rod. Due to the centric arrangement of the threaded bolt, a flush transition between guide element and threaded rod is achieved, in particular in the case of a blind bore formed centrally on the first end of the guide element.
  • the threaded bolt is welded to the construction site on the second end of the threaded rod so that it is exactly concentric with the cross section of the threaded rod.
  • a ceramic teaching or stencil can be used for centering when welding the threaded bolt on the second end of the threaded rod.
  • the gauge is placed on the second end of the threaded rod and the threaded bolt welded.
  • a preferred welding method is here a stud welding method, for example, the Nelson stud welding used.
  • the welding of the threaded bolt on the construction site has the advantage that the threaded bolts can not be damaged in a transport of threaded rods to the site and in particular the exact central orientation of the threaded bolt on the threaded rods during transport and storage is not adversely affected.
  • an engagement element for driving the guide element is arranged in a rotational movement at a second end of the guide element.
  • the engagement element may preferably be a nut firmly connected to the guide element, on which, for example, a tool or a drive unit is placed in order to drive the guide element in a rotational movement.
  • the driving of the guide element in a rotational movement can serve, for example, the guide element with the Screw threaded bolt or loosen the guide element by unscrewing the threaded bolt.
  • the driving of the guide element on the engagement element can serve to introduce or screw in the threaded rod connected to the guide element into the borehole.
  • an attack element for driving the rotary tool is arranged in a rotational movement at the second end of the rotary tool.
  • the engagement element may preferably be a nut fixedly connected to the rotary tool, to which e.g. a ratchet or a drive unit of a drilling device is placed.
  • the driving of the rotary tool via the engagement element can serve, for example, to unscrew or loosen the anchor nut for securing the head plate to the threaded rod.
  • a ratchet placed on the engagement element of the rotary element may rotate the rotary tool in one direction e.g. to unscrew the lowered anchor nut turn on the head lath.
  • the recess of the top plate is formed conical or frusto-conical.
  • the cone-shaped or frusto-conical recess of the top plate in the installed state is tapered upwards.
  • a guide tube is arranged on an underside of the top plate.
  • the guide tube is preferably aligned concentrically with the threaded rod or with the top plate.
  • the guide tube is used in particular to achieve or maintain the desired orientation of the top plate.
  • a substantially rectangular orientation of the top plate to the borehole and thus to the threaded rod is achieved by the guide tube.
  • cuttings are removed from the borehole through an annular gap between an inner and an outer drill pipe.
  • the removal of cuttings within an outer drill pipe in such a double-cased drilling method has the advantage that the Cuttings can be collected for example in a container.
  • the advantage is achieved that at the upper end of the borehole no, possibly mixed with binder suspension cuttings exits, which would complicate the arrangement of a top plate and its assurance by an anchor nut.
  • the removal of the cuttings within an outer drill pipe prevents the wellbore from being unnecessarily expanded by the cuttings relative to the diameter of the drill pipe.
  • the object mentioned at the outset is also achieved according to a second aspect of the invention by a previously described method according to the first aspect of the invention or according to a method of the kind set forth, which is characterized by the step: producing a blind hole at the upper end of the borehole in such a way that the top plate is at least partially disposed in the blind hole.
  • the floor area surrounding the upper end of the borehole is uneven and may be covered by cuttings and / or binder suspension after drilling the borehole, if necessary.
  • a backup of the top plate on the injection pile is therefore not produced in sufficient quality. It is therefore provided here to produce a blind hole at the upper end of the borehole, with which a flat bottom is formed, on which the top plate can be placed in the backup by means of anchor nut.
  • the blind hole also offers a space that can be filled with a binder suspension after the arrangement of the top plate and its securing by the anchor nut and thus leads to a secure hold of the injection pile.
  • the blind hole is made such that it leads to a widening of the upper end of the borehole and thus forms a widened upper region of the blind hole.
  • the blind hole is preferably introduced into the underwater concrete sole. This provides safe protection of the underwater concrete sole against buoyancy, since the injection pile is securely connected to the UWB sole via the top plate after screwing on the anchor nut and filling the blind hole with binder suspension and hardening it.
  • the blind hole can be introduced after the production of the well, simultaneously with the production of the well or before.
  • the blind hole for example, be introduced first in the underwater concrete sole and then the hole at the bottom of the blind hole through the underwater concrete sole to a predetermined depth below the underwater concrete sole.
  • the blind hole is made by means of an at least partially tubular drilling element.
  • the threaded rod is inserted or insertable into the wellbore before or after the blind hole is made.
  • the blind bore is produced by means of an at least partially tubular concrete milling element.
  • the concrete milling element preferably has an adapter facing away from the advancing direction, which adapter serves for connecting the concrete milling element to a drill pipe which is driven by a drive unit of a drilling device.
  • a guide tube is arranged on a front end in the advancing direction of the concrete milling element.
  • This guide tube in particular pilot, is preferably formed concentrically with the drilling element for producing the blind hole. More preferably, the guide tube projects at least partially into a hole made before the blind hole is made and facilitates the guidance of the concrete milling element. If the borehole is not present when the blind bore is produced, the guide ear can preferably be designed as a drill bit by means of which an upper region of a drill pipe is formed.
  • the above object is also achieved according to a third aspect of the invention a method described above according to the first or second aspect of the invention or according to a method of the type mentioned, which is characterized by the step: sealing an annular gap between a wall of the upper end the borehole and a tubular drilling element or a sealing tube.
  • Such a seal makes it possible, on the one hand, to press the binder suspension to be introduced into the borehole at a high pressure and, on the other hand, to prevent the escape of binder suspension from this annular gap.
  • the threaded rod can be securely anchored in the borehole, the drill pipe and the annular space formed between the drill pipe and borehole wall with a binder suspension filled, partly under pressure.
  • a problem with this is that some of the binder suspension may leak out of the annulus and accumulate on the floor above the top of the wellbore. This has the disadvantage that the binder suspension can not be pressed into the borehole with the required high pressure and, on the other hand, a larger amount of binder suspension than required to fill in the borehole has to be introduced.
  • binder suspension is reacted with an increased pressure, e.g. a pressure of 500 kPa (5 bar), can be pumped into the drilled space, so that the binder suspension also penetrates into the subjacent to the borehole wall ground. This leads to a secure hold of the later cured binder suspension and thus to a secure hold of the injection pile.
  • an increased pressure e.g. a pressure of 500 kPa (5 bar)
  • a sealing element in particular a preventer, arranged, which prevents leakage of the binder suspension from the upper end of the drilling element.
  • the sealing can preferably take place on a wall of the upper end of a blind hole.
  • the drilling element may preferably be a simple drill pipe, the outer pipe of a double-walled drilling element or a concrete milling element.
  • the advantages mentioned can also be achieved in a blind hole, in which the sealing takes place during compression between the outer wall of the upper end of the blind hole and the concrete milling element.
  • the sealing takes place by means of an annular sealing element which surrounds the tubular drilling element or the sealing tube.
  • the sealing element is sealingly arranged on the outer wall of the drilling element or the sealing tube and further preferably designed to surround the drilling element or the sealing tube annular.
  • the sealing element is preferably on one End of the tubular sealing element or the sealing tube arranged.
  • the sealing is preferably achieved by means of an additional second tube, a sealing tube.
  • the sealing is preferably achieved by means of an additional third tube, a sealing tube.
  • the arrangement of an annular sealing element is preferably carried out on the outer wall of the concrete milling. More preferably, the tubular drilling element or the sealing tube on an annular groove on its outer wall, in which the annular sealing element is embedded.
  • the annular sealing element remains stationary when pulling the drill pipe and pressing the borehole with the binder suspension at the upper end of the borehole.
  • the seal remains and the tubular drilling element or the sealing tube, which carries the sealing element, is not pulled, but maintains its position and thus the sealing function.
  • a guide element for releasable connection to one end of a threaded rod having a first and a second end, wherein the first end is adapted to be connected to one end of a threaded rod and the first end has a diameter corresponding to a core diameter of the threaded rod.
  • the first end of the guide element is conical or frusto-conical.
  • a blind hole is formed at the first end of the guide element with an internal thread for engagement with an external thread of a threaded bolt, which is arranged on one end of a threaded rod.
  • an engagement element for driving the guide element is arranged in a rotational movement at the second end of the guide element.
  • a rotary tool for screwing an anchor nut on a second End of a threaded rod inserted at a first end into a wellbore located below a water surface comprising a first end for placement on an anchor nut, a second end for rotational connection with a rotary drive, the rotary tool having an extension between the first and second ends , which is dimensioned so that the second end of the rotary tool when screwing the anchor nut is above the water surface.
  • an engagement element for driving the rotary tool is arranged in a rotational movement at the second end of the rotary tool.
  • the engagement element is preferably designed and arranged to come into engagement with a rotary drive and to be set in rotation by this rotary drive.
  • the engagement element is preferably non-rotatably connected to the rotary tool.
  • a rotary drive for driving the rotary tool on the engagement element for example, a ratchet or the drive unit of a drilling device can be used.
  • the guide element and its possible further developments as well as the rotary tool and its possible further developments have features that make them particularly suitable for a method according to the invention and its embodiments, in particular according to the first aspect of the invention.
  • the guide element and its training and the turning tool and its training is made to the preceding description of the corresponding features of the method and its training, in particular according to the first aspect of the invention.
  • a tubular drilling element or sealing tube for sealing an annular gap between a wall of an upper end of a borehole and the tubular drilling element or sealing tube with a tubular sealing element which on an outer wall of the tubular drilling element or the sealing tube is arranged.
  • the tubular drilling element or the sealing tube has at its end a groove in which the sealing element is arranged.
  • the tubular drilling element is formed by a concrete milling element.
  • the drilling element or the sealing tube and its possible further developments have features that make them particularly suitable for a method according to the invention and its embodiments, in particular according to the third aspect of the invention.
  • the tubular drilling element or the sealing tube and its developments reference is made to the preceding description of the corresponding features of the method and its further developments, in particular according to the third aspect of the invention.
  • the aforementioned object is also achieved according to a seventh aspect of the invention by using a guide element according to the fourth aspect of the invention for producing a Verpresspfahls below a water surface, in particular according to a method according to a first, second and / or third aspect of the invention.
  • the aforementioned object is also achieved according to an eighth aspect of the invention by using a turning tool according to the fifth aspect of the invention for producing a injection pile below a water surface, in particular according to a method according to a first, second and / or third aspect of the invention.
  • the above-mentioned object is also achieved according to a ninth aspect of the invention by using a tubular drilling element or a sealing tube according to a sixth aspect of the invention for producing an injection pile below a water surface, in particular according to a method according to a third aspect of the invention.
  • the first preferred embodiment is based on the FIGS. 1 to 6 described by way of example.
  • the inventive method and a drilling device with auxiliary elements according to the invention, here guide element 11 and rotary tool 3, can be used both by a floating and by a fixed working plane to water and on land.
  • the drill unit 55 By means of the drill unit 55, the drilling, rinsing and grouting 2, the drill string 12 - comprising uppermost drill pipe 15, drill string extension tubes 52, lower drill pipe 38 and drill bit 39 -, the Bohr Hughespumpe 45 and the pressure hose connection 46, the drill string 12 with simultaneous pumping of Water, cement suspension 19 or other flushing medium by rotation 49 about the axis of rotation 50 in the advancing direction 48 through the UWB sole 9 and the underlying subsoil 10 drilled until reaching the desired depth or the lower end of the well 41.
  • the drilling fluid medium e.g.
  • the drilling, rinsing and grouting head 2 is unscrewed from the uppermost drill pipe 15 and the pressure hose extension 60 is inserted into the drill string 12 as far as the drill bit 39.
  • the cement suspension 19 processed in the drilling fluid and cement slurry pump 45 is advanced through the pressure hose connection 46, the pressure hose extension 60 in the annular spaces between drill bit 39, drill string 12 and borehole wall 61 in the ground and the borehole wall 35 in the UWB in a previously calculated amount Cavity fills, filled or pressed. In this train will be the flushing medium is displaced upwards into the underwater area 8 by the cement suspension 19 ascending from the bottom 41 of the borehole and having a greater weight than water. Subsequently, the pressure hose extension 60 is pulled out of the drill string 12.
  • a threaded bolt 24 is welded in the center.
  • the steely maiden tube 18 is welded at the lower end 26 with a steel truncated cone 22 or optionally screwed by means of threaded bolts 21 and welded at the upper end 16 with a polygonal nut 17.
  • the truncated cone 22 is internally upwardly and downwardly provided with an internal thread for screwing the threaded bolts 24 and 21 (alternatively for a weld) and closes flush with the outer diameter of the spinster tube at the lower end 26 and down flush with the diameter of the threaded rod 37 at its upper end 25 from.
  • the truncated cone 22 is suitable as a connecting means preferably with the o. G. Flims manufactured and installed, so that the anchor or pile head plate shown in phase 5 can fall during assembly by its own weight in the required position below the upper end 25 of the threaded rod 37 and does not hang over it in the region of the truncated cone 22.
  • the concrete milling disc head 28 is bolted to the lower thread of the drill string extension tube 52 by means of welded adapter 20 with the thread at the upper end of the adapter 20.
  • the upper end 14 of the uppermost drill pipe 15 is screwed to the drilling, rinsing and grouting 2.
  • the elements connected in this way are lowered from the drill unit 55 through the underwater area 8 over the maid 11 across to the top edge (OK) of the UWB sole 9.
  • a depression or a milled blind hole 6 in the UWB sole 9 is produced by rotation about the axis of rotation 50 while simultaneously advancing in the drilling advancing direction 48 and, if necessary, supplying a drilling fluid medium 62, preferably first water.
  • a cement suspension 19 is pumped in by the Bohr Hughes- and cement slurry pump 45 via pressure hose connection 46, drilling, rinsing and grouting 2, drill string extension tube 52 and Betonfrässcale 2 under rotating movement of the aforementioned elements. Then the aforementioned elements are pulled by the drill unit 55 against the advancing direction 48 from the underwater area 8 and the area of the maid 11 and pivoted out of the vertical area of the borehole 13 by means of drilling unit 55.
  • the cement suspension 19 initially remaining in the cavity of the drill string extension tube 52 sags into the blind bore 6 during the aforementioned drawing process and fills the cavity thereof.
  • the anchor or pile head plate 31 with the top side welded anchor or pile head nut 30 and the underside welded guide tube 33 is optionally lowered with or without lifting over the maid 11 away until the bottom of the anchor or pile head nut 30 by the weight abuts this aforementioned elements at the upper end 25 of the threaded rod 37.
  • the guide tube 33 leads in this process by an overlap of the threaded rod to a nearly rectangular position of the anchor or pile head 5 to the pile axis 50. This position is required, then the anchor or pile head nut 30 with its internal thread in the external thread of the threaded rod 37 can be screwed.
  • a socket wrench 3 with a socket wrench head 23, which is welded to the lower end of a socket wrench tube 63, and a socket nut 64, which engages over the socket wrench tube 63 at the upper end and has been welded together, is used.
  • the socket wrench 3 is lowered over the maid 11 as a guide element through the UWB 8 to the anchor or pile head nut 30.
  • the socket wrench 3 by rotating movement of the socket wrench 3 by means of a ratchet 59 of the socket head 23 drops over the anchor or pile head nut 30 across to the socket key 65 from.
  • the cement suspension is displaced with the volume of the anchor or pile head 5, surrounds it and fills the blind hole 6 waterproof (see Phase 6).
  • the socket wrench 3 is pulled against the advancing direction 48 by means of drill unit 55 and pivoted out of the vertical of the borehole 13.
  • the virgin 11 can be welded from the threaded bolt 24, for example, manually or with or without mouth resp. Ring key, preferably using the nut 17, unscrewed and stored laterally to the next use.
  • a second preferred embodiment will be described below by way of example with reference to FIGS FIGS. 7 to 14 described in phases 1.1 to 8.1.
  • a blind hole is first milled by means of a concrete milling element 28.
  • the concrete milling element is moved by means of a drive unit 1 in a drilling advancing direction 48 and also in a rotational movement in a direction of rotation 49.
  • the guide tube 57 created by means of its drill bit while an upper portion of a borehole.
  • the borehole is created to a predetermined depth below the underwater concrete sole 9 by means of a drilling element which runs within the concrete milling element 28.
  • a flushing fluid is pumped through the drilling element.
  • the concrete milling element 28 has on its outer wall on a sealing element 67, which seals the annulus between Betonfräselement 28 and inner wall of the blind hole.
  • the flushing fluid exits at the lower end of the drilling element and spills the cuttings 71 through the annulus between the drilling element and the concrete cuttings element or a pipe connected to the adapter of the concrete cuttings element into the catch tank 71.
  • phase 3.1 by means of the cement suspension pump 45 via the pressure hose extension 60, a cement suspension is pumped into the interior of the drilling element, the annular space between the drilling element and the borehole wall 61 and into the annular space between the drilling element and concrete milling element 28.
  • the cement suspension has a higher density than the flushing fluid, so that the flushing fluid exits upwardly from the upper end of the annulus between the drilling element and concrete milling element 28 or a pipe connected to the adapter of the concrete milling element.
  • the sealing element 67 seals the annular space between the concrete milling element 28 and the inner wall of the blind hole, so that the annular space surrounding the drilling element is temporarily closed.
  • the injection compound (cement suspension) to be pumped in can not escape and therefore be pressed into the drilled cavity at a pressure of at least 500 kPa (5 bar) according to the accepted rules of technology (inter alia according to DIN 4128).
  • phase 4.1 the threaded rod 37 is first inserted into the drilling element and thus into the borehole. Thereafter, the drilling element is withdrawn from the borehole, while at the same time the concrete milling element 28 remains stationary in the vertical direction. During retraction of the drilling member, cement slurry is further pumped into the wellbore to fill the cavity left by the drilling member.
  • phase 4.1 and phase 5.1 the concrete milling unit is also withdrawn.
  • phase 5.1 and 6.1 the armature nut 30 and the top plate 31 are lowered over the guide element tube 18.
  • the anchor nut 30 is connected to the top plate 31 via the weld 69.
  • the rotary tool 3 is lowered with the socket wrench tube 63 via the guide member 11 so that it rests on the anchor nut 30.
  • phase 7.1 and phase 8.1 the armature nut 30 is screwed onto the threaded rod 37.
  • the rotary tool or socket wrench 3 which is formed with a designated as socket nut 64 engagement element for engagement with a ratchet 59, which is here in Fig. 13 (and Fig. 21 ) shown rotary tool 3, formed by the Drill unit 55 to be driven, so that the use of a ratchet 59 is not required.
  • phase 8.1 the rotary tool is retracted together with the guide member 11.
  • a third preferred embodiment will be described below by way of example with reference to FIGS FIGS. 15 to 22 described in phases 1.2 to 8.2.
  • phase 1.2 first a milling is done as in Fig. 7 shown and described in relation to phase 1.1.
  • the drilling of the piles takes place as in Fig. 16 shown in phase 2.2 in the double-tube rotary lapping process. Since the drilling and washing in the ground-independent annulus between the two Bohrrohrstrnature is revealed, a cement suspension is not required as a rinse, but usually only water.
  • the outer of the two drill pipe strands to be simultaneously rejected supports the borehole in the ground and prevents the ground from falling.
  • phase 3.2 the inner drill pipe 74, the annular space between the inner drill pipe 74 and the outer drill pipe 73 and the annular space between the outer drill pipe and the borehole wall are filled with a cement suspension.
  • the inner drill pipe 74 is retracted and then the threaded rod with screwed guide member 11 is inserted into the outer drill pipe 73 and thus into the borehole.
  • cement slurry is pumped back into the wellbore to fill the cavity left by the drill pipe 73.
  • phase 5.2 and 6.2 the armature nut 30 is lowered with the top plate 31 via the guide element 11 and via the guide element tube 18.
  • a spring cage spacer 56 To center the threaded rod is a spring cage spacer 56.
  • the anchor nut 30 is screwed onto the threaded rod by means of the socket wrench tube 63.
  • guide element 11 and the rotary tool or the socket wrench 3 are withdrawn.

Landscapes

  • Engineering & Computer Science (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)
  • Structural Engineering (AREA)
  • Piles And Underground Anchors (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
EP20130178036 2012-08-10 2013-07-25 Procédé de fabrication d'un pieu injecté sous pression au-dessous de la surface de l'eau Withdrawn EP2695998A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012214338.6A DE102012214338B4 (de) 2012-08-10 2012-08-10 Verfahren zum Herstellen eines Verpresspfahls unterhalb einer Wasseroberfläche

Publications (2)

Publication Number Publication Date
EP2695998A2 true EP2695998A2 (fr) 2014-02-12
EP2695998A3 EP2695998A3 (fr) 2015-09-09

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EP (1) EP2695998A3 (fr)
DE (1) DE102012214338B4 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109630170A (zh) * 2018-05-10 2019-04-16 孙成果 一种多功能气动锚杆钻装机
CN112538853A (zh) * 2020-12-09 2021-03-23 华侨大学 一种用于回收锚杆外卸载装置的保护罩及其施工方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2354764C3 (de) * 1973-11-02 1979-03-29 Philipp Holzmann Ag, 6000 Frankfurt Verfahren und Vorrichtung zur wasserdichten Durchführung eines durch eine Bauwerks- oder Baugrubenwand oder -sohle hindurch in das Erdreich einzubringenden Einbauteils
DE19604523C2 (de) * 1996-02-08 1998-07-02 Bauer Spezialtiefbau Hochliegende Abdichtungssohle mit Verdickungen
DE10225980A1 (de) * 2002-06-11 2003-12-24 Ischebeck Friedrich Gmbh Verfahren zur auftriebsgesicherten Verankerung von Betonkörpern
DE102005015494B4 (de) * 2005-04-05 2023-03-23 Friedr. Ischebeck Gmbh Bajonettkupplung

Non-Patent Citations (1)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109630170A (zh) * 2018-05-10 2019-04-16 孙成果 一种多功能气动锚杆钻装机
CN112538853A (zh) * 2020-12-09 2021-03-23 华侨大学 一种用于回收锚杆外卸载装置的保护罩及其施工方法

Also Published As

Publication number Publication date
EP2695998A3 (fr) 2015-09-09
DE102012214338B4 (de) 2019-05-23
DE102012214338A1 (de) 2014-02-13

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