EP0039931B1 - Coffrage perdu pour une dalle en béton, procédé de fabrication d'un panneau de béton destiné audit coffrage et ancre à cet effet - Google Patents

Coffrage perdu pour une dalle en béton, procédé de fabrication d'un panneau de béton destiné audit coffrage et ancre à cet effet Download PDF

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Publication number
EP0039931B1
EP0039931B1 EP81103541A EP81103541A EP0039931B1 EP 0039931 B1 EP0039931 B1 EP 0039931B1 EP 81103541 A EP81103541 A EP 81103541A EP 81103541 A EP81103541 A EP 81103541A EP 0039931 B1 EP0039931 B1 EP 0039931B1
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EP
European Patent Office
Prior art keywords
plate
concrete
connecting member
formwork
plate elements
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
Application number
EP81103541A
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German (de)
English (en)
Other versions
EP0039931A2 (fr
EP0039931A3 (en
Inventor
Bausysteme Vertriebsgesellschaft Mbh Kaiser-Omnia
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.)
KAISER-OMNIA BAUSYSTEME VERTRIEBSGESELLSCHAFT MBH
Original Assignee
Kaiser-Omnia Bausysteme Vertriebsgesellschaft mbH
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Publication date
Application filed by Kaiser-Omnia Bausysteme Vertriebsgesellschaft mbH filed Critical Kaiser-Omnia Bausysteme Vertriebsgesellschaft mbH
Priority to AT81103541T priority Critical patent/ATE9018T1/de
Publication of EP0039931A2 publication Critical patent/EP0039931A2/fr
Publication of EP0039931A3 publication Critical patent/EP0039931A3/de
Application granted granted Critical
Publication of EP0039931B1 publication Critical patent/EP0039931B1/fr
Expired legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry

Definitions

  • the invention relates to a permanent formwork for a concrete ceiling, consisting of at least two adjacent, prefabricated, assembly-resistant plate elements made of concrete according to the preamble of claim 1. Furthermore, it relates to a method for producing a plate element and an anchor for the formwork.
  • Prefabricated plate elements are placed in a central location in a size suitable for transport, e.g. B. in dimensions of 2 m x 5.20 m or 1 m x 5.20 m. As a rule, they are 4 cm thick and, in addition to the static reinforcement, also contain stiffening reinforcement in the form of lattice girders protruding from the slab.
  • the panels are brought to the construction site and form permanent formwork for the production of ceilings. For this purpose, such slab elements are placed next to each other on the retaining walls, where necessary, assembly supports are attached and in-situ concrete is poured at the required height.
  • anchors for non-positively receiving a connecting element are fastened in edge regions of these plate elements adjoining the abutting edges of adjacent plate elements, which are anchored with their foot part in the concrete of the plate element, protrude like bolts from the top side of the plate and have a flattened head at a distance from it.
  • the connecting link is designed in the form of a tab with two slots provided at a distance from the bolt-shaped projections of the anchors and is pushed together after adjacent plate elements have been pushed together, ie. H. after making the tongue and groove connection pushed onto the bolt-shaped projections. It prevents the distance between the adjacent bolt-shaped projections from increasing and the tongue and groove connection from being released. The shear force is transmitted via the tongue and groove connection.
  • the tab-shaped connecting member only takes on the task of locking in connection with the bolt-shaped projections.
  • This construction requires specially and precisely manufactured plate elements. So that the plate elements of the plate level can be pushed together to produce the tongue and groove connection, they must be correspondingly light, i. H. be small and thin.
  • the area dimension is specified as 0.9 m ⁇ 0.9 m. Since the plate elements are only attached to the stiffening lattice girders at the construction site, the construction is also labor-intensive.
  • LU-A-67 357 has made known a building construction from prefabricated parts, in which massive ceiling elements are non-positively connected by coupling devices at the joints.
  • recesses are provided in the area of the abutting edges of the finished parts, into each of which wedge slats of one and the other plate protrude, which can be non-positively connected by wedges.
  • the connection is designed in such a way that adjacent finished parts can be aligned during assembly, thus making it possible to compensate for construction tolerances.
  • the ceiling is formed from solid prefabricated panels, i.e. H. the finished parts do not serve as formwork for a concrete ceiling, so that there are corresponding transport problems and a labor-intensive adjustment process is required for the precise alignment of these finished parts.
  • the object of the invention is to form a permanent formwork of the type mentioned in the preamble with prefabricated, large-area, rigid panel elements without special training of the abutting surfaces of the plate elements is required.
  • the plate element for the invention In the area of the abutting edge adjoining the adjacent plate element, the formwork has at least one anchor which can be non-positively connected to the corresponding anchor of the adjacent plate element by means of a connecting member, so that here a connection point is created in a simple manner which is capable of transverse forces to transfer from one plate element to the other plate element and thus to prevent a different deflection of the plate elements at this point.
  • the positive connection must take into account on the one hand the fact that the thickness dimensions of the two plates in the area of the connection point are somewhat different for manufacturing reasons and it must also be possible to transmit transverse forces acting both upwards and downwards.
  • the latter requirement takes into account the fact that it cannot be determined from the start to which of the plate elements a load is initially applied.
  • connection points formed by anchors and a connecting element can be provided along the butt joint of two adjacent plate elements. So that these can be realized by uniform plate elements, the position of the armature is preferably chosen to be axially symmetrical.
  • Fig. 1 shows a top view of three adjacent plate elements 1, 2 and 3 made of concrete, which are placed on retaining walls 5, 6 and 7 and form the permanent formwork for a concrete floor.
  • each plate element also contains stiffening reinforcement, preferably made of lattice girders, which are indicated by dash-dotted lines 8 in the plate element 1.
  • stiffening reinforcement preferably made of lattice girders, which are indicated by dash-dotted lines 8 in the plate element 1.
  • Each line should represent a lattice girder.
  • each plate element carries at least one anchor 10 for the non-positive connection of a connecting member 11 (see FIG. 2) between the two anchors 10. Further non-positive connections can be made along the joint between adjacent plate elements, for example be provided at the points marked by dashed lines 12 and 13.
  • the anchors consist of a foot part, which in the present case is designed as a plate 14 and anchored in the concrete of the plate element 1 or 2, and a head part which is non-positively connected to the foot part and which consists of the plate top 15 protrudes and is formed in the embodiment by a closed bracket 16.
  • the U-shaped bracket in this case is welded to the plate 14 with its two legs.
  • the connecting member 11 is wedged both on the plate element 1 and on the plate element 2.
  • the connecting member 11 is wedged both on the plate element 1 and on the plate element 2.
  • the anchors 10 are first inserted into the form of these elements at the intended locations and fixed relative to the formwork. Since the underside of the anchors 10 is to be aligned with the underside of the plate elements, these elements are therefore simply placed on the floor of the formwork at the intended location and the brackets 16 are fixed to the formwork in the area later protruding from the plate surface via a suitable clamping device . The remaining reinforcement is then introduced and the plate element is manufactured as usual. After laying such plate elements on the construction site (see Fig. 1), the connecting members 11 are introduced and clamped by means of the wedges 17 and 18.
  • connection member 11 After the connection member 11 has been fixed by the wedges, the two plate elements are non-positively connected at this point and when one element bends, such a strong transverse force is exerted on the adjacent element that it bends in the area of the abutting edge in the same way. This avoids paragraphs on the butt joints of the panel elements on the underside of the finished ceiling.
  • the connecting member 11 is designed in the present case as a round metal rod.
  • other cross-sections can be used for the connecting link and the upper region of the bracket 16 can be adapted to these cross-sectional shapes.
  • the foot part 14 of the armature 10 in the illustrated embodiment also forms the underside of the plate element at this point, it should be formed with a non-corroding surface. Suitable for this galvanized steel sheet, for example.
  • the bracket 16 of the armature 10 is arranged directly on the abutting edge 19 of the respective plate element 1 or 2. This arrangement is advantageous with regard to the transfer of lateral force from one plate to the other. So that the problems caused by tolerances during manufacture and during installation can be solved, the clear width between the legs of the U-shaped bracket 16 is a multiple of the diameter or the width dimension of the connecting member 11. The clear width should be so large that taking into account the maximum permissible tolerances during manufacture and during installation, the connecting member 11 can still be pushed and wedged through the two adjacent brackets 16 of the adjacent plate elements 1 and 2 without difficulty.
  • brackets 16 Since the two brackets 16 are closely adjacent to one another, their lower edges 20 are brought to the same height by means of the connecting member 11 if the connecting member 11 runs only somewhat parallel to the underside of the plate. Is therefore ensured in the manufacture and installation of the armature 10 that the distance 21 between the lower edge of the horizontal bracket section and the lower surface of the associated plate member always has the same value, then the bracket 16 by means of the alignment of the lower edges 20 Link 11 also aligned the lower adjacent edges of the adjacent plate elements 1a and 2a, i. H. there is no observation of the underside of the ceiling when the connecting member is clamped.
  • the head part of the anchor protruding from the top of the plate has a support surface for the connecting member, which in the case of each anchor in the installed state lies at the same predetermined height above the underside of the plate element in question and runs parallel to the underside. Therefore, if the adjacent support surfaces of two adjacent anchors are brought to the same level by clamping the connecting member on this support surface, the undersides of the two adjacent plate elements in the region of the two anchors are also forced to the same level, i. G. the two adjacent lower edges adjoin one another without a difference in height and are held in this position by the shear force-transmitting anchors even when under load.
  • the anchor 31 used in the second exemplary embodiment according to FIGS. 4 and 5 and shown in perspective in FIG. 6 contains a foot part made of at least two anchoring brackets 34 and 35 embedded in the concrete of the plate elements 32 and 33.
  • the anchoring brackets here are also U-shaped and welded to a hexagon cylinder piece 36, which can also be a tube, the upper end face 37 of which protrudes from the upper side of the plate is designed as a contact surface for the connecting member 38.
  • the connecting member 38 is clamped on the bearing surface by means of a screw connection from a threaded bore 39 in the cylinder piece 36 and a screw 40.
  • the connecting member 38 is tab-shaped, i.e. H. formed with a mating surface matching the discharge surface 37.
  • the connecting member 38 has elongated holes 41 in order to be able to compensate for the inaccuracies caused by the manufacture and laying of the plate elements.
  • an anchoring bracket namely the anchoring bracket 34
  • an anchoring bow namely anchoring bracket 35
  • the two brackets take into account the fact that the anchor must be able to transmit transverse forces in both directions. It is also possible to provide only a single anchor bracket if it has a sufficient extent. In this case, the anchoring bracket must be arranged approximately in the middle between the underside of the panel and the top of the panel.
  • the anchor shown in Fig. 7 is characterized by particularly simple manufacture.
  • the foot part is also formed here by anchoring brackets 42 and 43, which, however, are V-shaped here, that is to say they each have only a single bending point.
  • the brackets are welded at a suitable distance to a threaded bolt 44 onto which a nut (not visible in the illustration according to FIG. 7) is screwed, which optionally forms the bearing surface for the connecting member 38 with the interposition of a washer.
  • the tab-shaped connecting member 38 can be clamped onto the support surface by means of a further nut 45.
  • the threaded bolt 44 has a screw head at the lower end, then it is expedient to provide spacers 46 on the lower anchoring bracket 42, which ensure that the anchor assumes the correct position on a flat formwork base without special measures. It should also be mentioned that when concreting the plate element, the thread is preferably covered by a plastic cap.
  • the anchor of FIG. 8 differs from that of FIG. 7 in that the lower anchor bracket 47 is U-shaped.
  • the foot part of the anchor is made of one the abutting edge of the plate element arranged, formed by claws 50 anchored in the concrete sheet 51 or 52.
  • the plate 52 is bent inwards at both ends in order to ensure an even better anchoring in the concrete.
  • the outside of the sheet metal strips 51 and 52 which is not visible in FIGS. 9 and 10, lies in the same plane as the surface of the abutting edge of the associated plate element.
  • the angled ends of the sheet 52 are countersunk in the associated plate element.
  • a threaded bolt 53 is also provided as the head part.
  • the lower edges of the plate elements are forcibly aligned by bringing the contact surfaces of the adjacent anchors to the same level by clamping the connecting member.
  • H. is the distance between the head parts of the two anchors.
  • the embodiments shown in FIGS. 9 and 10 are therefore also more suitable in terms of orientation than those in FIGS. 7 and 8 embodiments shown.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Joining Of Building Structures In Genera (AREA)

Claims (15)

1. Coffrage perdu pour une dalle en béton constituée par au moins deux panneaux de béton préfabriqués (1, 2) contigus, dans lequel, dans les parties marginales de ces panneaux, qui sont voisines des bords de jointement des panneaux (1, 2) voisins, est respectivement ancré dans le béton du panneau (1, 2, 32, 33) au moins un élément d'embase (14, 34, 35, 42, 43, 47, 51, 52) d'un élément d'ancrage (10, 31), relié à transmission de forces, à un élément de tête (16, 36, 44, 53) en saillie sur le côté supérieur (15) du panneau, et présente, à distance de ce dernier, une surface d'appui pourvue d'un élément de liaison (11, 38) de deux éléments d'ancrage voisins (10, 31), caractérisé par le fait que les éléments d'ancrage (10, 31) sont insérés de telle manière dans la partie marginale de deux panneaux voisins (1, 2, 32, 33) et à rigidité suffisante pour le montage, que les surfaces d'appui des éléments de tête (16, 36, 44, 53) se situent à un niveau prédéterminé au-dessus du côté inférieur du panneau concerné, afin que l'élément de liaison (11, 38) maintienne en direction verticale les côtés inférieurs de panneaux voisins et soit bloqué au niveau des surfaces d'appui entre deux éléments d'ancrage voisins (10, 31), alors que les forces transversales qui apparaissent lors du blocage des éléments de liaison et lors du bétonnage de la dalle (1) sont susceptibles d'être transmises par l'intermédiaire de deux éléments d'ancrage (10, 31) et de l'élément de liaison associé (11, 38).
2. Coffrage selon la revendication 1, caractérisé par le fait que l'élément d'ancrage (10) est formé par une plaque (14) ancrée dans le béton et par un étrier fermé (16) relié à transmission de forces à ladite plaque, et en saillie sur le côté supérieur (5) de ladite plaque.
3. Coffrage selon la revendication 2, caractérisé par le fait que l'étrier (16) a la forme d'un U et que la distance libre entre les branches de l'étrier est au moins égale au double du diamètre d'une tige ronde ou de la largeur d'une tige rectangulaire qui forme l'élément de liaison (11).
4. Coffrage selon la revendication 1, caractérisé par le fait que l'élément d'embase de l'élément d'ancrage (31) est constitué par au moins un étrier d'ancrage (34, 35, 42, 43, 47) noyé dans le béton.
5. Coffrage selon la revendication 4, caractérisé par le fait que le ou les étriers d'ancrage (34, . 35, 42, 43, 47) est ou sont disposés parallèlement au plan du panneau.
6. Coffrage selon la revendication 4 ou 5, caractérisé par le fait qu'un étrier d'ancrage (34, 42, 47) est prévu sur le côté inférieur du panneau et un étrier d'ancrage (35, 43) est prévu sur le côté supérieur du panneau.
7. Coffrage selon l'une des revendications 4 à 6, caractérisé par le fait que l'étrier d'ancrage (42, 43) est réalisé sous la forme d'un étrier ayant la forme d'un V.
8. Coffrage selon la revendication 1, caractérisé par le fait que l'élément d'embase de l'élément d'ancrage est constitué par au moins une tôle (51, 52) disposée sur le bord de jointoiement du panneau et ancrée à l'aide de griffes (50) dans le béton.
9. Coffrage selon l'une des revendications 1 à 8, caractérisé par le fait que l'élément de tête comporte un dispositif de liaison par vissage (39, 40) pour bloquer l'élément de liaison.
10. Coffrage selon la revendication 9, caractérisé par le fait que l'élément de tête est constitué par une pièce cylindrique (36) pourvue d'un filetage intérieur (39).
11. Coffrage selon la revendication 9, caractérisé par le fait que l'élément de tête est constitué par un boulon fileté (44, 53, 54) pourvu d'un filetage extérieur qui s'étend à partir de sa surface d'appui.
12. Procédé pour réaliser un panneau préfabriqué pour un coffrage selon l'une des revendications 1 à 11, dans lequel, après la mise en place et la fixation de l'armature dans un moule, du béton est rempli dans ce dernier, le béton étant exposé à la prise, caractérisé par le fait qu'avant la mise en place de l'armature, et au moins dans la partie d'un bord de jointoiement, un élément d'ancrage comportant les caractéristiques selon la revendication 1, est mis en place dans le coffrage et sa position est fixée par rapport à ce dernier.
13. Dispositif d'ancrage pour un coffrage selon l'une des revendications 4 à 7, caractérisé par au moins un étrier d'ancrage (34, 35, 42, 43, 47) auquel est soudé, perpendiculairement au plan de l'étrier, un boulon fileté (44, 59) ou un tube pourvu d'un filetage intérieur, ledit étrier ou ledit tube présentant, à un niveau qui dépasse l'épaisseur du panneau, une surface d'appui (37) pour un élément de liaison (38), et qui s'étend parallèlement au plan de l'étrier.
14. Dispositif d'ancrage selon la revendication 13, caractérisé par le fait qu'à la surface d'appui (37) est associé un dispositif (40, 45) pour bloquer un élément un élément de liaison (38) sur la surface d'appui.
15. Dispositif d'ancrage selon la revendication 13 ou 14, caractérisé par le fait qu'à une distance l'un de l'autre deux étriers (42 et 43) ayant la forme d'un V sont soudés à un boulon fileté (44) ou à un tube pourvu d'un filetage intérieur.
EP81103541A 1980-05-09 1981-05-08 Coffrage perdu pour une dalle en béton, procédé de fabrication d'un panneau de béton destiné audit coffrage et ancre à cet effet Expired EP0039931B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81103541T ATE9018T1 (de) 1980-05-09 1981-05-08 Bleibende schalung fuer eine betondecke, verfahren zur herstellung eines plattenelementes aus beton fuer eine solche schalung und anker hierfuer.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3017840A DE3017840C2 (de) 1980-05-09 1980-05-09 Bleibende Schalung für eine Betondecke und Anker hierfür
DE3017840 1980-05-09

Publications (3)

Publication Number Publication Date
EP0039931A2 EP0039931A2 (fr) 1981-11-18
EP0039931A3 EP0039931A3 (en) 1981-12-30
EP0039931B1 true EP0039931B1 (fr) 1984-08-15

Family

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Family Applications (1)

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EP81103541A Expired EP0039931B1 (fr) 1980-05-09 1981-05-08 Coffrage perdu pour une dalle en béton, procédé de fabrication d'un panneau de béton destiné audit coffrage et ancre à cet effet

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EP (1) EP0039931B1 (fr)
AT (1) ATE9018T1 (fr)
DE (1) DE3017840C2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2006790C2 (nl) 2011-05-16 2012-11-19 Wouter Garot Verankeringssamenstel en bevestigingsorgaan voor een dergelijk verankeringssamenstel.
CA3124496A1 (fr) 2018-12-19 2020-06-25 Mitek Holdings, Inc. Dispositif d'ancrage pour un plancher en beton
CN110106970A (zh) * 2019-05-31 2019-08-09 西安建工绿色建筑集团有限公司 拼装式标准层模块以及干湿工艺结合的标准层建造方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844024A (en) * 1954-10-21 1958-07-22 Mcdonald James Leonard Combination preformed and cast-in-situ reinforced flooring structure
DE1006137B (de) * 1954-12-31 1957-04-11 Siporex Int Ab Flaechentragwerk, insbesondere Geschossdecke, aus Leichtbetonplatten
US3360898A (en) * 1965-11-08 1968-01-02 Nat Lock Co Concrete weld plate
CH478969A (de) * 1966-05-10 1969-09-30 Heierli Walter Dipl Ing Verwendung von Stahlbetonbauteilen
AT314781B (de) * 1968-04-08 1974-04-25 Werner Weissenboeck Ing Einrichtung zur Verbindung von aus Beton od. dgl. vorfabrizierten Wandplatten mit Boden- oder Deckenplatten
CH485080A (de) * 1969-03-19 1970-01-31 Jankovich Stefan Von Ringanker für Decken in Gebäuden aus vorfabrizierten Bauelementen
US3662506A (en) * 1970-01-12 1972-05-16 Thomas J Dillon Unitized building structure utilizing precase components
FR2161843A2 (en) * 1971-12-03 1973-07-13 Rech Etudes Tech Assembling prefabricated building panels - using inset metal ties and external (plaster or acrylic) sealants
CH546318A (de) * 1972-04-06 1974-02-28 Wey J Alfons Baukonstruktion aus fertigteilen.
DE2739879A1 (de) * 1977-09-05 1979-03-15 Reinhold Michel Anker- und/oder verbindungsvorrichtung, insbesondere fuer betonteil o.dgl.

Also Published As

Publication number Publication date
ATE9018T1 (de) 1984-09-15
EP0039931A2 (fr) 1981-11-18
DE3017840A1 (de) 1981-11-19
EP0039931A3 (en) 1981-12-30
DE3017840C2 (de) 1984-05-17

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