EP2192237B1 - Coffrage avec un dispositif d'ancrage - Google Patents

Coffrage avec un dispositif d'ancrage Download PDF

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Publication number
EP2192237B1
EP2192237B1 EP09014414.8A EP09014414A EP2192237B1 EP 2192237 B1 EP2192237 B1 EP 2192237B1 EP 09014414 A EP09014414 A EP 09014414A EP 2192237 B1 EP2192237 B1 EP 2192237B1
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EP
European Patent Office
Prior art keywords
formwork
tension strut
formwork according
base
hook
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP09014414.8A
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German (de)
English (en)
Other versions
EP2192237A2 (fr
EP2192237A3 (fr
Inventor
Willibald Fischer
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.)
FWR Solutions GmbH
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FWR Solutions GmbH
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Publication date
Application filed by FWR Solutions GmbH filed Critical FWR Solutions GmbH
Publication of EP2192237A2 publication Critical patent/EP2192237A2/fr
Publication of EP2192237A3 publication Critical patent/EP2192237A3/fr
Application granted granted Critical
Publication of EP2192237B1 publication Critical patent/EP2192237B1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/01—Flat foundations
    • E02D27/02—Flat foundations without substantial excavation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162—Connectors or means for connecting parts for reinforcements
    • E04C5/166—Connectors or means for connecting parts for reinforcements the reinforcements running in different directions

Definitions

  • the invention relates to a formwork for concrete construction explained in the preamble of claim 1 Art.
  • Lost formworks are used, which limit either the outer contours of the concrete part or, as Stirnabschalung, successively cast concrete sections.
  • These lost formworks contain a formwork wall which must be fastened substantially perpendicularly to a base, for example a cleanliness layer or a reinforcement layer lying thereon, and held against the concreting pressure.
  • the attachment of these tie rods is done so far mostly by welding, which is often possible only at the reinforcement.
  • welded reinforcements must not be included in the strength of the reinforcement.
  • a weld in a limited space within a formwork is difficult and expensive.
  • the invention has for its object to provide a formwork that is easy and secure fastened via a back anchoring device.
  • a back anchoring of Schal formwandung can be made in a simple and easy way.
  • the flexible loop element preferably an annularly closed loop of rope
  • on the one hand easy to keep stock, inexpensive and easy to handle and on the other hand can be used so that at the same time by the attacking on the tension strut the anchoring point, for example.
  • In the reinforcement can be fixed.
  • This loop element is particularly suitable for a two-ply reinforcement.
  • the tension strut is connected to the other side preferably via a screw with the formwork.
  • a structurally simple screw connection includes a thread arranged on the tension strut, a lock nut and a bearing.
  • the bearing is preferably designed as a plug bearing made of two spaced-apart rods, which are fastened to the shuttering wall. In this way it is possible to use the rods at the same time for stiffening a panel, which can be pierced by the tension strut and thus would otherwise be relatively less stable.
  • a panel is preferably made of expanded metal. If the rods of the plug-in bearing in the form of longitudinal members of the formwork wall, i. used in the extension direction substantially perpendicular to the base, so a compensation for dimensional changes of the tension struts is created in a simple manner.
  • the lock nut is a clamping nut or sleeve with an integral washer, as used in the form of DYWIDAG® nuts, in particular wing nuts, in the construction sector, and in particular for the production of concrete parts, on a large scale and are present on every construction site.
  • Tie rods for use in the formwork according to the invention preferably contain a thread at one of their free ends and a hook at their other free end.
  • the anchoring is particularly stable when the pad is designed as a reinforcing layer, since there, for example, the hook or the bracket can be hung easily.
  • Fig. 1 shows a highly schematic representation of a formwork according to the invention 1 in side view for the preparation of a concrete part, wherein the formwork 1 is formed in the illustrated embodiment for producing a bottom plate.
  • the formwork 1 stands on a base, which in the illustrated embodiment comprises a conventional layer of cleanliness 2 and an overlying layer of reinforcement 3, which contains a plurality of cross bars 4 crossing each other and longitudinal bars 5, which are shown in several layers, four layers, one above the other.
  • the transverse and longitudinal bars 4 and 5 are provided with surface roughness usual in rebars, such as ribs 4a and 5a.
  • the reinforcement layer 3 can also be formed by already prefabricated grid mats or the like.
  • the formwork 1 is designed as a permanent formwork, ie it remains in the finished embodiment and used as Häfugenschalung, ie it separates successively pouring concrete pouring from each other, in the illustrated embodiment, first a concreting 7 on the right side of the formwork wall 6 in Fig. 1 and then a concreting 8 on the left side of the shuttering wall 6 in Fig. 1 is created.
  • the formwork wall 6 contains in the illustrated embodiment, a panel 9, which preferably consists of a pierceable by hand with a suitable article material and in particular is an expanded metal sheet.
  • stiffening carrier 10 in the form of cross members 11 and longitudinal members 12 are attached to the panel 9.
  • the cross member 11 consist of the usual grid or rod carriers with triangular cross section and extend transversely to the plane of the drawing Fig. 1 and parallel to the pad. These cross members 11 are mounted directly on the panel 9, preferably welded to this.
  • At least some of the side members 12 are, in particular Fig. 2 shows, formed as parallel rods 12a and 12b, which extend at a distance from each other substantially perpendicular to the pad on the shuttering panel 9 and are held by the cross members 11 at a distance from the shuttering board 9.
  • the number of longitudinal members 12 and the number of cross members 11 is selected in view of strength requirements.
  • the formwork wall 6 is installed in the general formwork such that the longitudinal members 12 are arranged on the side which is the last to be concreted Concrete section 8 faces.
  • the Formungswandung 6 is in the in Fig. 1 shown, held substantially perpendicular orientation to the reinforcing layer 3 by a remindverank ceremoniess observed containing tension rods 13 (tie rods).
  • a plurality of tie rods 13 are shown, but their number can be selected depending on the expected concreting pressure.
  • the tie rods 13 are installed so that they bridge the angle between the Schalungswandung 6 and the base 3, 2 at the first concreted concrete section 7 facing side, in a vertically installed shuttering wall 6 preferably at an angle between 30 ° and 60 °, in particular 45 °.
  • the tie rod 13 is anchored at one end, preferably on the shuttering wall 6, via a screw 14 and at the other end, preferably on the reinforcement 3, via a hook connection 15 directly.
  • this embodiment is not the subject of the present invention.
  • the tension strut 13 has, as Fig. 3 shows, at its one free end a thread 16 and at its other free end a hook member 17.
  • the thread 16 may be incorporated directly into the tension strut 13, but may also be formed by a welded threaded rod.
  • a tension rod or the threaded portion of a tension rod is used for the tie rod 13, as it is available on the market under the name DYWIDAG® tension rod and is widely used in concrete construction.
  • the tension strut 13 is preferably bent, but the hook element 17 can also be welded or otherwise fastened.
  • the screw 14 further includes a lock nut 18, which is preferably designed as a clamping nut with integrated washer 19 and wings 20 for a manual screwing.
  • a clamping screw is preferably used, which is available on the market under the name DYWIDAG® screw or wing nut and is widely used in concrete construction.
  • a flexible loop element 21 is used as an intermediate element for the hook connection 15, which was produced in the illustrated embodiment from a cable section 22, the free ends with a cable connector 23, for example.
  • a clamping sleeve or the like., Are joined together to form a closed ring ,
  • the loop element 21 is preferably knotted into the reinforcement layer 3 and there preferably in such a way that it connects the two superimposed rods to one another at the points of intersection of transverse bars 4 and longitudinal bars 5.
  • the loop element 21 can be used in any type of reinforcement layer, but it is particularly suitable for two-layer reinforcements.
  • the compound in the reinforcing layer 3 is preferably such that a double-laid loop under the diagonal of the crossing point of the two rods 4, 5 out and one end through the other end is pulled.
  • This forms a loop portion 22a into which a hook element 17 can be hooked and a node portion 22b around the point of intersection.
  • the node portion 22b of the cable loop 22 is tightened about the crossing point of the rods 4, 5, so that the rods 4, 5 pressed and held in close contact with each other, which by the surface roughness 4a, 5a is facilitated and strengthened.
  • the tension strut 13 is passed through an aligned in the space between the bars 12 opening in the shuttering board 9, wherein the opening is preferably created by piercing the formwork panel 9 by means of the tie rod 13.
  • the tie rods 13 are inserted so far until their free threaded ends between the longitudinal bars 12a, 12b pass through.
  • the longitudinal bars 12a, 12b have a distance from each other which is greater than or equal to the diameter of the threaded portion 16 but smaller than the diameter of the flange 19 and the integrated or inserted washer of the lock nut 18. Then, the hook member 17 is suspended in the intermediate member in the form of the flexible loop member.
  • the lock nut 18 is screwed onto the thread 16 and the tension strut 13 tensioned to train, i. the nut 18 is screwed on until the loop portion 22a has been pulled so far in the direction of the shuttering wall 6, that the node portion 22b engages tightly around the bars 4, 5 of the reinforcement layer 3.
  • the first concreting section 7 can be created.
  • the nuts 18 can be removed for further use, while the tie rods 13 and the shuttering wall 6 remain as lost in the component.
  • the tension strut can be attached to the screw in a suitable pad and the other end are connected by means of the described hook connection with the formwork wall.
  • the threaded connection other lock nuts or locking sleeves, including those that can be screwed by means of tools, can be used.
  • the parallel rods pierced plates, sleeves or the like. Can be used as a plug bearing.
  • the loop element can continue, for example, by a at its ends formed with hooks or other fastening means provided rectilinear rope or band, wherein the rope or band is placed diagonally around the rods, in particular at the crossing points, and then preferably fixed in this position by means of hooks or fastening means so that a contracting loop formed is when the tension strut is biased to train.
  • the flexible loop element can be fastened by suitable nodes to the reinforcement layer and / or the formwork wall.

Claims (13)

  1. Coffrage (1) pour la construction en béton, comprenant une paroi de coffrage (6) agencée sur une base de support (2, 3) et comprenant un dispositif d'ancrage arrière, qui est destiné à assurer un appui de soutien de la paroi de coffrage (6) sur la base de support (2, 3) et comprend au moins un contrefort de traction (13) relié aussi bien à la paroi de coffrage (6) qu'à la base de support (2, 3), caractérisé en ce que le contrefort de traction (13) est relié, par l'intermédiaire d'une liaison à crochet (15) comprenant un élément de boucle flexible (21), au support de base (2, 3) et ou à la paroi de coffrage (6) de façon telle, que le contrefort de traction (13) soit accroché par l'intermédiaire d'un élément à crochet (17) à son extrémité libre, dans l'élément de boucle (21).
  2. Coffrage selon la revendication 1, caractérisé en ce que l'élément de boucle (21) est une boucle de câble annulaire, fermée, notamment en un câble d'acier.
  3. Coffrage selon la revendication 2, caractérisé en ce que l'élément de boucle (21) agencé à plat est enroulé, avec une extrémité, autour d'un ancrage, notamment des barres (4, 5) qui se croisent, et l'autre extrémité est menée à travers la boucle ainsi formée, de sorte que l'élément de boucle forme un élément de noeud (21a), qui entoure l'ancrage et forme un tronçon d'accrochage (21b) dans lequel s'engage le contrefort de traction (13) avec un élément de crochet (17).
  4. Coffrage selon l'une des revendications 1 à 3, caractérisé en ce que le contrefort de traction (13) est être relié à la paroi de coffrage (6) ou respectivement à la base de support (2, 3) par l'intermédiaire d'une liaison vissée (14).
  5. Coffrage selon la revendication 4, caractérisé en ce que la liaison vissée (14) comprend un filetage (16) agencé sur le contrefort de traction (13), un écrou de blocage de sécurité (18) et un palier de support (12, 19) .
  6. Coffrage selon la revendication 5, caractérisé en ce que le palier de support (12, 19) comprend deux barres (12) agencées à distance l'une de l'autre.
  7. Coffrage selon l'une des revendications 1 à 6, caractérisé en ce que la paroi de coffrage (6) comprend un panneau (9) qui est rigidifié au moyen de traverses et de longerons (11, 12), et qui est réalisé en un matériau pouvant être transpercé par le contrefort de traction (13), notamment du métal déployé.
  8. Coffrage selon la revendication 6, caractérisé en ce que les barres (12) sont réalisées en tant que poutrelles de rigidification pour le panneau (9), notamment en tant que longerons, ou font partie de celui-ci.
  9. Coffrage selon l'une des revendications 6 à 8, caractérisé en ce que l'écrou de blocage de sécurité (18) est un écrou ou manchon de serrage avec une rondelle d'appui (19) intégrée, notamment un écrou à oreilles DYWIDAG®.
  10. Coffrage selon l'une des revendications 1 à 9, caractérisé en ce que le contrefort de traction (13) comprend une tige filetée, notamment une tige de serrage DYWIDAG®, ou une partie filetée de celle-ci.
  11. Coffrage selon l'une des revendications 1 à 10, caractérisé en ce que le contrefort de traction (13) est pourvu d'un filetage (16) à une extrémité libre, et de l'élément de crochet (17) à l'autre extrémité libre.
  12. Coffrage selon l'une des revendications 1 à 11, caractérisé en ce que la base de support (2, 3) est réalisée sous forme de couche d'armature de renfort (3), et le contrefort de traction (13) est relié à la couche d'armature de renfort, par l'intermédiaire de la liaison par accrochage (15).
  13. Coffrage selon la revendication 12, caractérisé en ce que la couche d'armature de renfort (3) renferme deux barres transversales et longitudinales (4, 5), qui se croisent et sont pourvues de rugosités de surface (4a, 5a).
EP09014414.8A 2008-12-01 2009-11-18 Coffrage avec un dispositif d'ancrage Active EP2192237B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202008015883U DE202008015883U1 (de) 2008-12-01 2008-12-01 Schalung mit Rückverankerungseinrichtung

Publications (3)

Publication Number Publication Date
EP2192237A2 EP2192237A2 (fr) 2010-06-02
EP2192237A3 EP2192237A3 (fr) 2015-07-01
EP2192237B1 true EP2192237B1 (fr) 2018-02-28

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EP09014414.8A Active EP2192237B1 (fr) 2008-12-01 2009-11-18 Coffrage avec un dispositif d'ancrage

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EP (1) EP2192237B1 (fr)
DE (1) DE202008015883U1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009014872U1 (de) * 2009-12-16 2011-04-28 Peca - Verbundtechnik Gmbh Fugenschalungselement
DE202010005218U1 (de) 2010-04-16 2010-06-24 Peca-Verbundtechnik Gmbh Schalungssystem
DE102016217430B4 (de) 2016-09-13 2022-09-22 Fwr Solutions Gmbh Dehnfugenschalung
DE102020109530B3 (de) 2020-04-06 2021-05-27 Max Frank GmbH & Co. Kommanditgesellschaft Schalungssystem
DE102020109531B3 (de) 2020-04-06 2021-07-29 Max Frank GmbH & Co. Kommanditgesellschaft Schalungssystem
DE102021104831A1 (de) 2021-03-01 2022-09-01 Fwr Solutions Gmbh Dehnfugenschalung mit Spannvorrichtung
DE102022107996A1 (de) 2022-04-04 2023-10-05 Henning Hager Ankereinheit, Bauwerkseinrichtung und Verfahren zum Herstellen einer Bauwerkseinrichtung
CN115387606B (zh) * 2022-08-16 2024-01-09 山东公用设计集团有限公司 一种可抽芯式建筑模板

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3981068A (en) * 1969-06-27 1971-01-07 Improvements in and relating to nosings
DE19533421C1 (de) * 1995-07-19 1996-09-12 Baumann Verwertungs Gmbh Haltevorrichtung zum Halten eines Schalelements
DE10102660A1 (de) * 2001-01-17 2002-07-18 Ulrich Baumann Beim Schalen einer Betondecke zu verwendende Haltevorrichtung

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
EP2192237A2 (fr) 2010-06-02
EP2192237A3 (fr) 2015-07-01
DE202008015883U1 (de) 2009-04-02

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