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EP0670944B1 - Support de coffrage de plafond - Google Patents

Support de coffrage de plafond Download PDF

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Publication number
EP0670944B1
EP0670944B1 EP93922495A EP93922495A EP0670944B1 EP 0670944 B1 EP0670944 B1 EP 0670944B1 EP 93922495 A EP93922495 A EP 93922495A EP 93922495 A EP93922495 A EP 93922495A EP 0670944 B1 EP0670944 B1 EP 0670944B1
Authority
EP
European Patent Office
Prior art keywords
support
projections
molding according
plastic
carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93922495A
Other languages
German (de)
English (en)
Other versions
EP0670944A1 (fr
Inventor
Arthur Schwörer
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.)
Peri GmbH
Original Assignee
Peri GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6472277&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0670944(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Peri GmbH filed Critical Peri GmbH
Priority to EP96104314A priority Critical patent/EP0718453B1/fr
Publication of EP0670944A1 publication Critical patent/EP0670944A1/fr
Application granted granted Critical
Publication of EP0670944B1 publication Critical patent/EP0670944B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs
    • E04G11/50—Girders, beams, or the like as supporting members for forms
    • 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
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/38—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings for plane ceilings of concrete
    • 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
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs

Definitions

  • the invention relates to a slab formwork for concrete with slab formwork elements and their girders, the girders having two rows of spaced apart projections which project substantially upwards and outwards and are spaced apart from one another.
  • a support for concrete slab formwork of this type is known (see. Fig. 4, 5; description column 14, line 26 to column 15, line 20) with flanges running along its long sides for laying on as Frame formwork panels or formwork elements.
  • the flanges run approximately at half the height of the beams.
  • the surface of the formwork facing of the formwork element facing the concrete lies in one plane with the upper surface of the beams, so that the beams form on the underside of the finished concrete ceiling. This is often undesirable.
  • the supports required for this are often equipped with a drop head, so that after a certain time the beams with the formwork elements can be lowered and switched off and only the head of the prop continues to support the ceiling.
  • the invention has for its object to carry out a beam for a ceiling formwork so that a uniform concrete image is formed on the underside of the ceiling and the application of formwork elements is easy.
  • This object is achieved in that at the two edges of the upper surface of the carrier a series of substantially upward and outwardly projecting, spaced apart projections is provided, which are suitable for fixing or fixing formwork elements, and that Distance between the projections corresponds to twice the distance of a stop arranged on the underside of the formwork element from the edge of the formwork element and the distance of the projections from one another corresponds to a side length of the formwork element to be placed or a fraction of this dimension.
  • This arrangement has the advantage that the formwork elements in the gap between two projections already lie close together when the formwork elements are placed on them, so that it is not necessary to adjust the formwork elements.
  • the formwork elements are on top of the beam, so that it is no longer reflected on the underside of the concrete.
  • a particular advantage of the invention is that it can be used to build slab formwork in which all formwork elements can be removed when the girder is lowered with the help of a drop head.
  • the sidewalk slabs must always be placed on their base so that the protrusions protruding downward from the slab corners engage in the spaces provided for this purpose in the rows of teeth.
  • a slightly shifted laying of the sidewalk slabs in the longitudinal direction of the underlay is not expedient, because then the downward protruding projections at the corners of the sidewalk slabs no longer engage in these recesses and therefore the slabs are not fixed in the longitudinal direction of the underlay or are not flush with the slabs, whose projections engage in the recesses.
  • a space between a longitudinal row of formwork elements and the adjacent longitudinal row of formwork elements can can be bridged by cover plates or other known measures.
  • the distance between the two rows of projections corresponds to twice the distance of a stop provided on the underside of the formwork element from the edge of the formwork element.
  • the stop provided on the underside of the formwork element can be realized by a special part.
  • the inner surface of the frame leg of the formwork element serves as such a stop.
  • the distance from this inner surface to the edge of the formwork element can be greater than the rear surface of the frame of the formwork element if the edge of the formwork element protrudes beyond the frame leg and, for example, a drip nose is provided on the projecting edge.
  • the distance between two adjacent projections in the longitudinal rows can have a different dimension than the distance between the two longitudinal rows if the corresponding dimension is different at different edges of the formwork element.
  • the distance between two successive projections in a row and the distance between the two rows each correspond to twice the thickness of the part of the frame engaging between the projections formwork elements to be placed on the carrier.
  • the projections taper upwards, so that the gap between the projections has V-shaped flanks which widen upwards and therefore the frame legs are guided into the correct position when the formwork elements are placed on them.
  • a support for ceiling formwork elements is characterized in that a plastic layer of preferably tough-elastic plastic is provided at least on its upper surface.
  • a plastic layer of preferably tough-elastic plastic is provided at least on its upper surface.
  • Such a layer of tough elastic plastic is hardly injured when cleaning the carrier.
  • this plastic layer can be provided in the simplest way with the aforementioned projections. For example, the plastic layer can be applied to the carrier by extrusion the projections can then be milled out.
  • the plastic layer consists of a prefabricated plastic strip which is attached to the carrier.
  • a prefabricated plastic strip can be provided with the aforementioned projections in a particularly simple manner.
  • the plastic strip can even be exchangeably attached to the carrier. This is not only advantageous when the plastic strip is renewed, but the supports can also be converted if other ceiling formwork elements are to be placed on them, in which the distance between the inner surface of the frame or a stop from the edge of the ceiling formwork element is different than in the case of previously placed formwork elements on the carrier.
  • a prefabricated strip can be attached to the carrier in various ways, for example the strip can be riveted or glued to the carrier.
  • the carrier has at least one undercut on its side walls, in which the bar for fastening, z. B. latching, engages.
  • the bar can be pushed onto the carrier in the longitudinal direction.
  • the plastic strip can be attached to the carrier by nailing.
  • the carrier 1 shown in FIGS. 1, 2 and 3 is made of an aluminum alloy in the extrusion process. Its cross section is designed as a rectangular hollow profile. On the two longitudinal edges of the top 2 of the carrier 1, a row extending over the entire length of the carrier 1 is formed obliquely upwards outwardly projecting projections 3, 4. Together with the upper side 2 of the carrier 1, they form a groove 5 over the entire length of the carrier 1.
  • the groove 5 serves as a receptacle for formwork elements 11, 29. At the bottom, it has twice the width of a frame leg 14, 15 of one running parallel to the longitudinal axis of the carrier formwork element 11, 29 to be inserted on the side of the formwork element facing away from the formwork skin.
  • the projections 3 and 4 delimit cutouts 6, which taper towards the bottom. Their clear width at the bottom corresponds to twice the width of a frame leg 16, 17 (FIG. 3) running transversely to the longitudinal axis of the beam of a formwork element 11, 30 to be inserted into the groove 5 on the side facing away from the formwork skin.
  • the recesses 6 are arranged so that there is a grid dimension when a support structure for formwork elements for formwork of a ceiling is constructed from beams 1 and suitable supports.
  • the spacing of the cutouts 6 from one another corresponds to a fraction of the corresponding dimension of a formwork element 30.
  • a seventh the width of a shell element 30.
  • the carrier 1 with each provided a suspension device which is shown in Fig. 3 for the sake of clarity as a simple suspension bolt 7, which runs across the two side panels 8, 9 of the carrier 1 and protrudes on both sides.
  • the formwork elements 11 and 29 have a frame 12 to which a formwork skin 13 is fastened.
  • the frame 12 consists, for example, of welded aluminum profiles.
  • one leg 14, 15 of the frame 12 of two adjoining formwork elements 11, 29 are received next to each other (see FIG. 4).
  • the groove 5 tapers downwards.
  • the formwork elements 11, 29 lie against one another with some tension.
  • the cutouts 6 in the projections 3, 4 of the groove 5 are penetrated in the transverse direction to the carrier 1 by legs 16, 17 of the frame 12 each of two formwork elements 11, 30 (cf. FIG. 3). Since the cutouts 6 also taper downwards, the frame legs 16, 17 also abut one another. By choosing the clear width of the recesses 6 on the upper side 2 of the carrier 1, the frame legs 16, 17 of the formwork elements 30 and 11 can also abut one another under tension (FIG. 3).
  • the carrier 1 are suspended in suspension parts 18, 19 of a support 20.
  • the hanging parts 18, 19 are hook-shaped; they engage in the interior of the hollow profile of the carrier 1 and each take up a suspension bolt 7.
  • the suspension parts 18, 19 can also be designed such that they receive a suspension bolt 7 on the outside of the carrier 1 at its laterally projecting ends.
  • the ends of the beams 1 are first suspended in the supports 20 such that several rows of beams 1 and supports 20 are formed next to one another at a distance of the length of the formwork elements to be placed.
  • the length of the recess 6 corresponds to twice the thickness of the part 16, 17 of the frame 12 engaging in it, of the formwork elements 30, 33 to be placed on the carrier 1.
  • the recess 6 must have twice the length of the dimension from the inner surface of the frame leg 16 to the edge of the formwork element.
  • Fig. 5 shows a cross section through another embodiment of a carrier. It has a closed rectangular cross section divided by a wall 40.
  • the lower edge of the cross-section and the ends of the carrier have a special shape, which allow the use of the carrier in connection with different support heads.
  • the carrier At its upper edge, the carrier has a smooth surface 41, in the longitudinal center plane of which extends over the entire length of the carrier extending longitudinal groove 42 is provided, the flanks of which are at their upper end a smaller distance apart than the largest diameter of the groove.
  • the upper wall 43 of the carrier 44 protrudes beyond the side walls 45 of the carrier and has approximately dovetail-shaped cutouts 46 there. This is followed by a downwardly projecting extension 47, which can be designed as a drip nose.
  • a plastic strip 50 shown in FIG. 6, is pushed onto the upper surface 41 of the carrier 44, so that its central projection 49, which projects below the flat section 48, engages in the groove 42 and holds the section 48 there on the surface 41.
  • the strip 50 has on its long sides downwardly extending limbs 51 which come to rest on the extensions 47 and cover them when the strip 44 is pushed onto the carrier 44.
  • Inwardly projecting projections 52 engage the dovetail cutouts 46 after pushing on the strip 50 and hold the legs 51 there in close contact with the extensions 47.
  • the strip 50 has a row of projections 53 on each of the two edges of the flat strip section 48 and 54, the shape and spacing of which correspond to the projections 3 and 4 according to the embodiment according to FIGS. 1 and 2.
  • the embodiment according to FIGS. 5 and 6 therefore differs from the embodiments according to FIGS. 1 to 4 in that the projections 3 are not molded onto the carrier 44 made of an aluminum alloy, but rather onto a strip 50 made of a tough elastic plastic, which is at the top is attached to the carrier 44.
  • the strip 50 When the strip 50 is pushed onto the carrier 44, the strip section 48 lies more or less close to the top surface 41 of the carrier.
  • the small, post-clearance gaps between the strip section 48 and the support surface 41 allow the section 48 to move against the support surface 41 to a small extent, which is sufficient to allow concrete parts to stick off the section 48.
  • the legs 51 extend laterally beyond the carrier 44 and thereby shield the side surface of the carrier from concrete parts and cement milk.
  • the downwardly projecting projections 47 and the legs 51 form a drip nose at their end, from which cement milk drips and keeps them from the side surfaces of the carrier 44.
  • the distance between the rows of projections 53 and 54 corresponds to the distance between the rows of projections 3 and 4 in the embodiment according to FIGS. 2 and 4, the application of the carriers 44 corresponds to the application of the carriers 1.
  • a carrier is made of wood, a plastic strip, which may also have legs that extend downward to protect the side surfaces of the carrier, can be nailed onto the wooden carrier.
  • the plastic strip 50 protects all surfaces of the carrier that could come into contact with concrete or cement milk splashes, so that before the carrier is reused, only the surface of the viscoplastic plastic has to be cleaned, which is much easier to do than cleaning a metal surface . There is no danger that the surface of the tough elastic plastic will be damaged.
  • the projections prevent the formwork elements from slipping on the supports, so that the formwork elements remain contracted and tightly drawn. If the protrusions are made of plastic, so they can be elastic. The spring effect caused by this elasticity helps to pull the elements tight.
  • Embodiments of the carrier have a length of 2190 mm, a height up to the top 2 of 164 mm and a width of the rectangular hollow profile of 60 mm.
  • the axis dimension of the support structure i.e. H. from the center of one column 20 to the center of the next column 20 is 2250 mm.
  • Another embodiment of the carrier has a length of 1440 mm, the axial dimension is then 1500 mm.
  • the dimension from the center of a recess 6 to the center of the next recess 6 is, for example, 125 mm.
  • more or fewer (metal or wooden) surfaces of the carrier can be encased with a layer of plastic which has a hydrophobic surface.
  • these projections and, if appropriate, the surfaces of the carrier adjoining these projections can be encased with plastic, which in turn can be realized by a plastic strip which can be fastened to the carrier.
  • the projections can not only be sheathed with plastic, but also consist entirely of plastic.

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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)
  • Building Environments (AREA)

Abstract

L'invention concerne un support pour des éléments de coffrage de plafond pour le béton. Elle consiste en ce qu'à chacune des deux extrémités de sa surface supérieure (2, 48), il est prévu une série d'éléments en saillie (3, 4, 53, 54) dépassant sensiblement vers le haut et l'extérieur et mutuellement espacés qui servent à maintenir ou à fixer des éléments de coffrage de plafond (11, 29, 30), et en ce que l'espace entre les éléments en saillie (3, 4, 53, 54) correspond au double de l'espacement d'une butée disposée sur la face inférieure de l'élément de coffrage par rapport à l'extrémité de l'élément de coffrage et que l'espacement mutuel des éléments en saillie (3, 4, 53, 54) correspond à la dimension correspondante de l'élément de coffrage à poser (11, 29, 30) ou à une fraction de cette dimension. L'invention consiste également en ce que les surfaces du support sont au moins partiellement recouvertes d'une baguette en matière plastique.

Claims (17)

  1. Coffrage de plafond pour du béton, comprenant des éléments de coffrage et leurs supports, les supports (2) comprenant deux rangées disposées à distance l'une de l'autre de saillies (3, 4, 53, 54) qui dépassent sensiblement vers le haut et vers l'extérieur et qui sont agencées à distance les unes des autres, caractérisé en ce que les deux rangées des saillies (3, 4, 53, 54) sont prévues sur les deux bordures de la surface supérieure (2, 48) d'un support, en ce que l'intervalle (2) entre deux saillies (3, 4, 53, 54) correspond au double de la distance entre une butée (12), agencée sur la face inférieure d'un élément de coffrage (11, 30), et la bordure de l'élément de coffrage (11, 30), et en ce que la distance des saillies (3, 4, 53, 54) les unes des autres correspond à la longueur d'un côté de l'élément de coffrage (11, 29, 30) à poser, ou à une fraction de cette dimension.
  2. Coffrage selon la revendication 1, caractérisé en ce que la distance entre les deux rangées de saillies (3, 4, 53, 54) sur le support correspond au double de la distance entre une butée prévue sur la face inférieure de l'élément de coffrage et la bordure de l'élément de coffrage (11, 29, 30).
  3. Coffrage selon l'une ou l'autre des revendications 1 et 2, caractérisé en ce qu'on se sert comme butée de la face intérieure d'un bras de cadre (14, 15 ; 16, 17) d'un élément de coffrage (11, 29, 30).
  4. Coffrage selon l'une quelconque des revendications précédentes, caractérisé en ce que les saillies (3, 4, 53, 54) vont en se rétrécissant vers le haut.
  5. Coffrage de plafond pour du béton, comprenant des éléments de coffrage et leurs supports, les supports comprenant deux rangées disposées à distance l'une de l'autre de saillies dirigées sensiblement vers le haut et vers l'extérieur et agencées à distance les unes des autres, selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une couche de matière plastique viscoélastique est prévue au moins sur la surface supérieure d'un support.
  6. Coffrage selon la revendication 5, caractérisé en ce que la couche de matière plastique présente des saillies (53, 54).
  7. Coffrage selon l'une ou l'autre des revendications 5 et 6, caractérisé en ce qu'une barrette préfabriquée (50) en matière plastique viscoélastique est fixée au moins sur la surface supérieure d'un support.
  8. Coffrage selon la revendication 7, caractérisé en ce que la barrette de matière plastique (50) est fixée de manière interchangeable sur le support (44).
  9. Coffrage selon l'une ou l'autre des revendications 7 et 8, caractérisé en ce que le support (44) comporte sur ses deux parois latérales (45) au moins une contre-dépouille (46) dans laquelle s'engage la barrette (50).
  10. Coffrage selon l'une quelconque des revendications 7 à 9, caractérisé en ce que la barrette (50) est susceptible d'être déplacée sur le support (44) en direction longitudinale de celui-ci.
  11. Coffrage selon l'une quelconque des revendications 5 à 10, caractérisé en ce qu'il est prévu entre la couche de matière plastique et la surface de support située au-dessous de celle-ci au moins par tronçons des espaces intermédiaires individuels qui permettent un faible déplacement du tronçon de matière plastique (48, 51) à angle droit par rapport à la surface du support.
  12. Coffrage selon l'une quelconque des revendications 5 à 11, caractérisé en ce que le support est en bois et en ce que la barrette de matière plastique est clouée sur celui-ci.
  13. Coffrage selon l'une quelconque des revendications précédentes, caractérisé en ce que des projections de goutte d'eau sont formées le long de l'arête supérieure de la section transversale du support.
  14. Coffrage selon l'une quelconque des revendications 5 à 13, caractérisé en ce que la barrette en matière plastique (50) recouvre également une partie des surfaces latérales du support dans la région de la bordure supérieure du support.
  15. Coffrage selon la revendication 14, caractérisé en ce que la barrette en matière plastique comporte des projections de goutte d'eau sur les bras (51) qui recouvrent en partie les parois latérales du support.
  16. Coffrage selon la revendication 14, caractérisé en ce que les bras dépassant vers le bas (51) de la barrette en matière plastique (50) recouvrent des projections de goutte d'eau (saillies 47) du support (44).
  17. Coffrage selon l'une quelconque des revendications 5 à 16, caractérisé en ce que les surfaces d'appui et/ou les saillies du support sont enveloppées de matière plastique.
EP93922495A 1992-11-06 1993-10-13 Support de coffrage de plafond Expired - Lifetime EP0670944B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP96104314A EP0718453B1 (fr) 1992-11-06 1993-10-13 Coffrage de dalle

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4237516 1992-11-06
DE4237516A DE4237516A1 (de) 1992-11-06 1992-11-06 Deckenschalungsträger
PCT/DE1993/000982 WO1994011594A1 (fr) 1992-11-06 1993-10-13 Support de coffrage de plafond

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP96104314A Division EP0718453B1 (fr) 1992-11-06 1993-10-13 Coffrage de dalle
EP96104314.8 Division-Into 1993-10-13

Publications (2)

Publication Number Publication Date
EP0670944A1 EP0670944A1 (fr) 1995-09-13
EP0670944B1 true EP0670944B1 (fr) 1996-12-27

Family

ID=6472277

Family Applications (2)

Application Number Title Priority Date Filing Date
EP93922495A Expired - Lifetime EP0670944B1 (fr) 1992-11-06 1993-10-13 Support de coffrage de plafond
EP96104314A Expired - Lifetime EP0718453B1 (fr) 1992-11-06 1993-10-13 Coffrage de dalle

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP96104314A Expired - Lifetime EP0718453B1 (fr) 1992-11-06 1993-10-13 Coffrage de dalle

Country Status (6)

Country Link
US (1) US5683609A (fr)
EP (2) EP0670944B1 (fr)
JP (1) JP3242661B2 (fr)
DE (3) DE4237516A1 (fr)
ES (2) ES2156964T3 (fr)
WO (1) WO1994011594A1 (fr)

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FR2479411A1 (fr) * 1980-03-25 1981-10-02 Maillet Expositions Sa Element porteur en alliage leger file avec habillage decoratif pour structure de stand, de batiment prefabrique ou autre
DE3117861C2 (de) * 1981-05-06 1983-10-20 Friedrich 7250 Leonberg Eger Schaltafel für die Aufnahme von aushärtbaren Baumaterialien
DE3544544A1 (de) * 1985-11-22 1987-05-27 Rochus C Ruettnauer Profilelement aus recycling-kunststoff
US4848049A (en) * 1988-09-01 1989-07-18 Mold Systems Corporation Joist protector

Also Published As

Publication number Publication date
US5683609A (en) 1997-11-04
DE59310149D1 (de) 2001-04-05
EP0670944A1 (fr) 1995-09-13
JP3242661B2 (ja) 2001-12-25
ES2098062T3 (es) 1997-04-16
EP0718453A2 (fr) 1996-06-26
WO1994011594A1 (fr) 1994-05-26
DE4237516A1 (de) 1994-05-11
EP0718453A3 (fr) 1996-10-16
EP0718453B1 (fr) 2001-02-28
JPH08503036A (ja) 1996-04-02
DE59304923D1 (de) 1997-02-06
ES2156964T3 (es) 2001-08-01

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