EP2060703B1 - Tirant de coffrage - Google Patents

Tirant de coffrage Download PDF

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Publication number
EP2060703B1
EP2060703B1 EP08167369A EP08167369A EP2060703B1 EP 2060703 B1 EP2060703 B1 EP 2060703B1 EP 08167369 A EP08167369 A EP 08167369A EP 08167369 A EP08167369 A EP 08167369A EP 2060703 B1 EP2060703 B1 EP 2060703B1
Authority
EP
European Patent Office
Prior art keywords
anchoring
section
shuttering
anchoring section
formwork
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
EP08167369A
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German (de)
English (en)
Other versions
EP2060703A1 (fr
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.)
Doka Industrie GmbH
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Doka Industrie GmbH
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Filing date
Publication date
Application filed by Doka Industrie GmbH filed Critical Doka Industrie GmbH
Priority to PL08167369T priority Critical patent/PL2060703T3/pl
Publication of EP2060703A1 publication Critical patent/EP2060703A1/fr
Application granted granted Critical
Publication of EP2060703B1 publication Critical patent/EP2060703B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
    • E04G17/075—Tying means, the tensional elements of which are fastened or tensioned by other means
    • E04G17/0751—One-piece elements
    • E04G17/0752—One-piece elements fully recoverable

Definitions

  • the invention relates to a formwork anchor for the tensile strength joining of formwork elements according to the preamble of claim 1.
  • walls are produced, for example, by placing two formwork elements with their formwork surfaces largely parallel to one another and anchoring them against one another by anchors which extend through the concrete that is filled later.
  • anchor By the anchor, the distance between the opposite formwork elements, and thus the subsequent wall thickness is further defined.
  • the anchors must be solvable both from the mutually anchored formwork elements, as well as from the solidified concrete.
  • a so-called one-sided anchorage is provided, in which the armature can be attached and detached essentially from one side, the so-called anchor side, without having to carry out work steps on the opposite side.
  • a formwork anchor is known as Vorbehrssussistand under the name "Peri-Trio-Housing anchor", which consists of a one-piece rod, at the ends of which threads are formed, and whose central portion is designed as a slender cone.
  • Peri-Trio-Housing anchor With the thread at one end of the anchor is screwed into a nut, which is fixed to a first formwork element which is provided on the opposite side.
  • the conical section is in the area of the later concrete-filled zone, and the cone allows the anchor to be pulled out to the side where the cone has the larger diameter.
  • a nut is turned on, which cooperates with a second formwork element, which is provided on the anchor side, and by means of which the desired wall thickness can be adjusted.
  • the thread is susceptible to contamination. For example, there is the problem that the thread is contaminated with concrete during concreting and the anchor can be adjusted to a different wall thickness only after a complicated cleaning of the thread.
  • the shuttering anchor further comprises a holder which is connectable via a plurality of holes provided on a cylindrical anchoring portion with this.
  • the invention has for its object to provide a generic formwork anchors, which is less susceptible to contamination and allows a speedy adjustment of the wall thickness.
  • the invention is based on the idea to decouple the application and positioning of the anchoring element on the second anchoring portion on the one hand and the setting of the anchoring element on the second anchoring portion on the other hand in a generic formwork anchors.
  • the anchoring element in relation to the second anchoring portion in the longitudinal direction thereof is freely displaceable and fixable via engagement means with respect to the second anchoring portion in its longitudinal direction.
  • the formwork anchor according to the invention has a simple construction thanks to the omission of threads in the region of the anchoring element and the second anchoring portion.
  • the formwork anchor can be produced in the context of the present invention in various ways. In view of a simple and precise production and a high durability of the formwork anchor, however, it is provided according to a further development of the invention that the second anchoring portion and the at least partially conical portion are integrally formed. Further, the first anchoring portion is connected to the one-piece unit of second anchoring portion and at least partially conical portion, in particular fixed. This makes it possible to use as the first anchoring section conventional threaded rods or tie rods and to compress the only with the other parts of the formwork anchor in a simple and rapid and mechanically reliable manner.
  • the engagement means comprise at least one opening, in particular a passage opening in the second anchoring section. This results in a simple design a particularly safe and quickly produced engagement.
  • the anchoring element has at least two openings which are arranged offset in the longitudinal direction of the second anchoring portion. This results in a finer adjustability or fixability of the anchoring element with respect to the second anchoring portion, wherein the degree of fine adjustment by turning the anchoring element and reverse plugging the same can be further increased to the second anchoring portion.
  • the anchoring element is designed in several parts, wherein at least a part of the anchoring element of the or the remaining part (s) is solvable and in a deviating configuration is connectable again.
  • the fineness of the anchoring element is increased with respect to the second anchoring portion, wherein the anchoring element is still largely unimpaired by contamination quickly, safely and precisely positioned and can be anchored.
  • the engagement means comprise at least one locking element which is insertable into the at least one opening of the second anchoring portion and / or anchoring element.
  • the at least partially conical section is formed several times conical. This makes it possible to achieve that, especially with thin walls, there is no excessively large annular gap between the formwork anchor and a formwork element through which the formwork anchor passes. This leads both to a lower reworking effort on the wall produced and to a lower cleaning effort on the formwork anchor.
  • the formwork anchor can still be easily removed from the concrete.
  • the second anchoring section has markings, in particular a scale.
  • the second anchoring portion comprises load application means for releasing the formwork anchor from the concrete, for example suitable through-holes, hexagonal sections or the like.
  • the shuttering anchor is at least partially coated, in particular chromed, wherein the coating is preferably in the range of at least partially conical section vorsch.
  • the coating is preferably in the range of at least partially conical section vorsch.
  • a formwork anchor 10 as a preferred embodiment of the preferred embodiment of the present invention is shown in FIGS FIGS. 1 to 3 shown schematically in two side and one perspective view.
  • the formwork anchor 10 is used for tensile strength joining of formwork elements, for example in the manufacture of reinforced concrete walls, in which two standing formwork elements are joined together to give a defined wall thickness.
  • the formwork anchor 10 has a first anchoring portion 5, which is formed by a prestressing steel rod in the present embodiment.
  • Such known prestressing steel bars have a ribbing or a coarse thread, by means of which the first anchoring section 5 can be anchored by screwing in on a first formwork element.
  • the first anchoring portion 5 can also be anchored in other ways to the respective formwork element, for example by means of a bayonet closure or the like.
  • the formwork anchor 10 On its opposite side of the formwork anchor 10 has a second anchoring portion 3, which will be explained in more detail below.
  • the formwork anchor 10 has a double conical section 2 which has a first conical section 2 'and a second conical section 2 ". which is located closer to the second anchoring portion 3, less than the opening angle of the conical portion 2 '.
  • the conical section 2 may also be conical in sections only, and may also have a smaller or larger number of conical areas. In this case, the surfaces of the conical sections 2 ', 2 "are chromed in the present embodiment.
  • the at least partially conical section 2 in the present embodiment is formed integrally with the second anchoring section 3, for example as a rotated component, and the prestressing steel bar 5 is pressed with the conical section 2 and second anchoring section 3 in the region of a compressed section 12.
  • the formwork anchor 10 may also be constructed completely in one piece or by a larger number of parts.
  • the second anchoring section 3 is rod-shaped in the present embodiment, ie without thread or the like. Rather, in the present embodiment, the second anchoring portion 3 has a plurality of through holes 7 extending in the longitudinal direction of the second anchoring portion 3 (from left to right in FIG Fig. 1 ) are spaced and extend in the present embodiment perpendicular to the axis of the formwork anchor 10. In addition, the second anchoring portion has a scale in Shape of ring marks, which are spaced in the longitudinal direction of the second anchoring portion 3 and allow an accurate adjustment of the respective wall thickness.
  • the second anchoring section 3 has at its free end (on the right in FIG Fig. 1 )
  • the formwork anchor 10 comprises an anchoring element, which is formed in the present embodiment by a stop disc 1 and a sleeve 4.
  • the stop disc 1 and the sleeve 4 are attachable to the second anchoring portion 3 and freely slidable in the longitudinal direction, i. There is a certain play between the inner peripheral surfaces of the stopper disk 1 and the sleeve 4 and the outer peripheral surface of the second anchoring portion. 3
  • the sleeve 4 has a plurality of passage openings 8, which in the present embodiment extend completely through the sleeve 4 perpendicular to the longitudinal axis of the shuttering anchor 10.
  • the sleeve 4 may also have through holes that penetrate only once the side wall of the sleeve 4.
  • the anchoring element 1, 4 safely with respect to the second anchoring portion. 3 be fixed.
  • the stop disc 1 and the sleeve 4 need not necessarily be integral, but optionally may be configured as separate components, so that the sleeve 4 is detachable from the stopper disc 1. After loosening the sleeve 4, this can either be connected to the stop disc 1 again in the same position. Alternatively, it is also possible to rotate the sleeve 4 and to connect with its opposite end to the stop plate 1. For this purpose, as in Fig. 2 it can best be seen, on the stop disc 1 engaging projections 1 'may be provided which can engage with provided in the sleeve 4 grooves 4' in engagement. As a result, an even greater variability of the setting positions of the anchoring element 1, 4 with respect to the second anchoring section 3 can be achieved.
  • the use of the formwork anchor 10 according to the invention in the manufacture of a reinforced concrete wall relates, for example, as follows. Thanks to the scaling provided on the second anchoring section 3, the anchoring element 1, 4 can already be brought into a desired position (and thus wall thickness) with respect to the second anchoring section 3, the position of the stop disc 1 indicating the wall thickness to be produced at the scale. Subsequently, the screw 9 is passed through the openings 7, 8 of the sleeve 4 and the second anchoring portion 3 and secured at its free end as needed with the nut 9 '. Now, the shuttering anchor 10 by a designated opening in a formwork element (not shown), and then the thread of the first anchoring portion 5 is completely screwed into a provided on an opposite formwork element internal thread. In this fully screwed-in position, the formwork anchor 10 produces a tension-proof connection between the formwork elements such that the desired spacing and thus the desired wall thickness are determined between the formwork elements.
  • the wall can be concreted, wherein the at least partially conical section 2 can come into direct contact with the concrete.
  • the formwork anchor 10 can be solved, for example, by attacking with a suitable tool on the hexagon 11 and the thread of the first anchoring portion 5 is rotated out of the internal thread of the corresponding formwork element.
  • the shuttering anchor 10 can be solved easily thanks to the at least partially conical design of the section located in the concrete 2, and the shuttering anchor 10 can then be completely removed.
  • the formwork anchors can be stored or used directly for the next scarfing process, with no change in the wall anchorage thickness must be made on the formwork anchor 10, whereby the construction process is accelerated and error sources are minimized.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Claims (7)

  1. Tirant de coffrage (10) pour un assemblage résistant à la traction d'éléments de coffrage, comportant :
    une première section d'ancrage (5) pouvant être ancrée sur un premier élément de coffrage,
    une section (2) au moins partiellement conique,
    une deuxième section d'ancrage (3), la section (2) au moins partiellement conique étant prévue entre la première section d'ancrage (5) et la deuxième section d'ancrage (3), et
    un élément d'ancrage (1, 4) prévu pour être mis en place dans une position d'ancrage définie sur la deuxième section d'ancrage (3),
    ledit élément d'ancrage (1, 4) pouvant coulisser librement par rapport à la deuxième section d'ancrage (3) dans la direction longitudinale de celle-ci, et pouvant être immobilisé par des moyens d'enclenchement par rapport à la deuxième section d'ancrage (3) dans la direction longitudinale de celle-ci,
    les moyens d'enclenchement comprenant au moins un orifice (7), en particulier un trou de passage dans la deuxième section d'ancrage (3), et
    les moyens d'enclenchement comportent au moins un élément de blocage (9),
    caractérisé en ce que les moyens d'enclenchement comportent au moins deux orifices (8) dans l'élément d'ancrage (1, 4), lesquels sont disposés de manière décalée dans la direction longitudinale de la deuxième section d'ancrage (3),
    l'élément de blocage (9) étant insérable dans l'orifice ou les orifices (7) de la deuxième section d'ancrage (3) et/ou dans un orifice (8) de l'élément d'ancrage (1, 4).
  2. Tirant de coffrage selon la revendication 1, caractérisé en ce que l'élément d'ancrage (1, 4) est réalisé en plusieurs parties, au moins une partie (4) de l'élément d'ancrage étant amovible de la partie ou des parties (1) restantes et pouvant être remonté suivant une configuration différente.
  3. Tirant de coffrage selon l'une des revendications précédentes, caractérisé en ce que la section (2) au moins partiellement conique est réalisée avec plusieurs conicités.
  4. Tirant de coffrage selon l'une des revendications précédentes, caractérisé en ce que la deuxième section d'ancrage (3) est pourvue de marquages, en particulier d'une graduation.
  5. Tirant de coffrage selon l'une des revendications précédentes, caractérisé en ce que la deuxième section d'ancrage (3) comporte des moyens d'application de charge (11) pour dégager le tirant de coffrage du béton.
  6. Tirant de coffrage selon l'une des revendications précédentes, caractérisé en ce que la deuxième section d'ancrage (3) et la section (2) au moins partiellement conique sont réalisées d'un seul tenant, et en ce que la première section d'ancrage (5) leur est raccordée, en particulier par scellement.
  7. Tirant de coffrage selon l'une des revendications précédentes, caractérisé en ce que celui-ci est au moins partiellement revêtu, en particulier chromé, le revêtement étant de préférence prévu dans la zone de la section au moins partiellement conique.
EP08167369A 2007-11-13 2008-10-23 Tirant de coffrage Active EP2060703B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08167369T PL2060703T3 (pl) 2007-11-13 2008-10-23 Ściąg szalunkowy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202007015833U DE202007015833U1 (de) 2007-11-13 2007-11-13 Schalungsanker

Publications (2)

Publication Number Publication Date
EP2060703A1 EP2060703A1 (fr) 2009-05-20
EP2060703B1 true EP2060703B1 (fr) 2012-08-01

Family

ID=40350173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08167369A Active EP2060703B1 (fr) 2007-11-13 2008-10-23 Tirant de coffrage

Country Status (4)

Country Link
US (1) US8464997B2 (fr)
EP (1) EP2060703B1 (fr)
DE (1) DE202007015833U1 (fr)
PL (1) PL2060703T3 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009054857A1 (de) 2009-12-17 2011-06-22 Doka Industrie Gmbh Spannvorrichtung und Betonschalungssystem mit zumindest einer Spannvorrichtung
DE102012203678A1 (de) * 2012-03-08 2013-09-12 Peri Gmbh Ankerstabbefestigungsvorrichtung, Schalungsanker sowie Betonwandschalung
DE102012212600A1 (de) * 2012-07-18 2014-01-23 Harsco Infrastructure Services Gmbh Arretiervorrichtung mit Anschlag für Ankerstab und Verfahren
DE102013211490A1 (de) 2013-06-19 2014-12-24 Doka Industrie Gmbh Schalungsankeraufnahme, Schalungsanker sowie Schalungselement zur Aufnahme dieser
PL3385469T3 (pl) 2017-04-06 2020-06-15 Ulma C Y E, S. Coop. Zespół kotwiący do szalunku pionowego i szalunek pionowy
DE102018107081A1 (de) 2018-03-26 2019-09-26 Stefan Bleyer Verankerungsvorrichtung für einen Schalungsanker sowie Schalungsanker
IT201800006063A1 (it) * 2018-06-06 2019-12-06 Assieme di bloccaggio per il bloccaggio di un tirante e assieme di tirante
IT201900010785A1 (it) 2019-07-03 2021-01-03 Betonfer S N C Di Pangerc Aleksandra & Co Sistema di armatura dei muri in cemento armato facilmente eseguibile da un solo lato.

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Also Published As

Publication number Publication date
PL2060703T3 (pl) 2012-12-31
DE202007015833U1 (de) 2009-03-26
EP2060703A1 (fr) 2009-05-20
US20090120031A1 (en) 2009-05-14
US8464997B2 (en) 2013-06-18

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