EP0789116B1 - Elément de coffrage - Google Patents

Elément de coffrage Download PDF

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Publication number
EP0789116B1
EP0789116B1 EP96120679A EP96120679A EP0789116B1 EP 0789116 B1 EP0789116 B1 EP 0789116B1 EP 96120679 A EP96120679 A EP 96120679A EP 96120679 A EP96120679 A EP 96120679A EP 0789116 B1 EP0789116 B1 EP 0789116B1
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EP
European Patent Office
Prior art keywords
bars
holding
shuttering element
element according
spacing
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
EP96120679A
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German (de)
English (en)
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EP0789116A1 (fr
Inventor
Willibald Fischer
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/18—Bulkheads or similar walls made solely of concrete in situ
    • E02D5/185—Bulkheads or similar walls made solely of concrete in situ with flexible joint members between sections
    • 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
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/065—Light-weight girders, e.g. with precast parts
    • 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
    • E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts

Definitions

  • the invention relates to a formwork element for lost formwork in concrete construction explained in the preamble of claim 1 Art.
  • Such a formwork is from the DE-U-90 05 482 known.
  • the known formwork element consists of a holding device and a wall education for retaining the liquid concrete.
  • the wall formation consists of a dimensionally stable material, such as an impermeable wafer or scale plate or a concrete permeable expanded metal sheet.
  • the holding device consists of a plurality at a greater distance parallel juxtaposed, bendable support rods to which the sheet or the expanded metal sheet is attached.
  • the known formwork element thus consists of a holding device and a completely prefabricated wall, which would be able to retain the cast-in, liquid concrete even without the holding device.
  • the production of this circuit element is relatively expensive, since the handling and storage of relatively large metal sheets or rolls is cumbersome.
  • the FR-A-567 031 describes a kind plaster carrier, which is to be used for the manufacture of walls in timber frame construction.
  • the plaster base consists of a plurality of wooden slats, which are held by means of wires at a predetermined distance from each other. These plaster beams are fixed on the wooden stands and thrown with plaster, which anchors between the slats.
  • the FR-A-2 388 944 describes a reinforcing and formwork element composed of two lattices, a close-meshed lattice and a coarse mesh lattice.
  • the close-meshed grid is prefabricated wire mesh, while the coarse mesh grid consists of individual longitudinal and transverse bars, which are applied on both sides of the close-meshed grid.
  • the meshes of the close-meshed grid have a concrete holding size.
  • wire mesh is mechanically very unstable, so that the entire mechanical forces must be absorbed by the cast concrete from the large grid, which is expressed in the relatively small mesh size of 10 cm (claim 4).
  • the problem of handling the wire mesh rollers in the production of the formwork element is also used to handle the wire mesh rollers in the production of the formwork element.
  • the CH-A-191 780 describes a component with formwork function, which consists of an insulating building board to which by means of brackets at a distance and parallel a wire or expanded metal mesh is attached. Again, the concrete-containing wall training is formed by a prefabricated element that needs to be stiffened by the bracket.
  • the FR-A-2 625 525 describes a method for manufacturing a swimming pool in which the pelvic walls are to be potted together with the pelvic floor. For this purpose, first a wall boundary is established by a fine-mesh grid and then covered this wall boundary with a coarse-mesh grid, which also forms the bottom boundary.
  • This document thus shows no formwork element, ie no prefabricated in the desired shape and with the desired components formwork part. In addition, only materials in roll or plate form are used again.
  • the known formwork element consists of an expanded metal sheet, which is welded between the transverse and longitudinal bars of a metal grid.
  • the known formwork element can be used in this form as a lost formwork panel.
  • the formwork element can also be fixed to a self-supporting scaffold to a spatially shaped, prefabricated formwork element, such as a gutter formwork of the type DE-U 90 05 482 or an upstand after the DE-U 92 06 140 , get connected.
  • the known formwork element is very well usable for the intended purpose, but requires a higher workload and is therefore relatively expensive.
  • the invention has for its object to provide an inexpensive and easy to produce, fully functional formwork element and to show a method for its preparation.
  • the inventive design of the concrete-containing wall formation of the formwork element by a plurality of substantially parallel Abdeckstäben an easily producible and cost-effective formwork element is created. It has been found that the Abdeckstäbe are quite capable of a matched to the concrete quality distance from each other provided to keep the concrete safely within the formwork, on the other hand, however, to allow a certain outsourcing, so even with these parallel Abdeckstäben a rough pad can be created, at which the subsequently produced, second concrete section can dig well. As a result, however, the cover rods are embedded in the concrete, which contributes to an additional reinforcement and thus to increase the strength.
  • the preferred distance between the cover bars according to claim 2 is between 6 and 8 mm.
  • the distance can also be reduced to zero or increased to 30 mm.
  • the preferred diameter of the Abdeckstäbe is 3 to 5 mm. However, if an additional, particularly effective reinforcement is to be achieved, its diameter can rise to 12 mm.
  • a plurality of parallel support rods for holding the cover rods are provided according to claim 5.
  • the distance of the support rods on constructive conditions, in particular the diameter of the cover rods and the expected concrete pressure to which the cover rods are exposed be sized.
  • a distance between 10 and 25 cm, preferably 20 cm, will be sufficient for most applications.
  • the support rods can be used for additional reinforcement and for this purpose according to claim 7 a diameter up to 12 mm, i. the diameter of the usual reinforcing bars, have.
  • the formwork element according to the invention may also be formed according to claim 8 as a formwork element with self-supporting framework, wherein the cover bars are supported directly by one of the scaffold bars, which further simplifies the production.
  • the cover rods form part of the supporting framework, so that the production is further simplified.
  • Claim 11 describes a particularly preferred method for producing the formwork element according to the invention, for which the expediently already in the DE-PS 41 11 062 described device can be used.
  • the holding bars of the spot welding stations which are at a constant distance from each other, can be fed and the covering bars placed on the holding bars just before the spot welding station at the predetermined distance and immediately welded to the holding bars.
  • the production of the formwork elements according to the invention when the support rods according to Claim 12 from a continuous supply, such as a roll supplied and cut only after the connection with the Abdeckstäben in the desired size of the formwork element.
  • Claim 13 describes a particularly preferred, because simple and inexpensive method to produce formwork elements with a self-supporting framework and Schalungswandungen, since a flat material can be made much easier.
  • the formwork element 1 shows a first exemplary embodiment of a formwork element 1 according to the invention in the form of a flat formwork strip or a formwork panel, which is shown only partially.
  • the formwork element 1 has a plurality of closely adjacent and parallel aligned Abdeckstäbe 2 with a round cross section, which are connected by a holding device in the form of perpendicular to the Abdeckstäben 2 extending holding rods 3 and held at a predetermined distance a to each other.
  • the support rods 3 have a round cross section.
  • the distance a between the Abdeckstäben 2 is tuned to the istschalen to the formwork element 1 concrete quality and can be at particularly thin liquid concrete qualities at 0 mm and particularly tough, thick concrete qualities at 12 mm. For most of the usual concrete qualities, however, the distance a is between 6 and 8 mm.
  • the cover bars 2 have a diameter d, which was selected according to the desired strength and flexural rigidity for the cover bars 2 and the concrete part and can be up to 12 mm. Usually, the diameter d is between 3 and 5 mm.
  • the support rods 3 have a diameter D, which can be up to 12 mm.
  • the support rods 3 are arranged at a distance A on the same side of the cover rods 2, which expediently corresponds to the distance between the reinforcing bars of a grid mat and between 10 and 25 cm, preferably 20 cm.
  • Both the cover bars 2 and the support rods 3 are made of the usual structural steel and are spot welded together at their crossing points. You can have a profiled outer surface, as is common with rebars.
  • the sheet-like shuttering element 1 can be used like any other sheet formwork, i. It can be set up in the usual way or attached to a support frame.
  • Fig. 2 shows another embodiment of a formwork element 10 according to the invention, which is designed as a form of formwork element for producing a raised edge.
  • the formwork element 10 has the cover rods 2 already described with reference to FIG. 1, whose diameter and distance from each other with those of FIG. 1 are identical.
  • the frame of the formwork element 10 includes a holder 15, in which one of the usual, not shown joint tapes made of elastic material can be inserted.
  • the holder 15 consists of V-shaped brackets 16, wherein in each case a V-shaped bracket 16 is arranged with its vertex in the middle of the U-shaped bracket 13 between the Abdeckstäben 2.
  • the bracket 15 additionally has connecting rods 17, which in particular connect the free ends of the V-shaped bracket 16 with each other and hold at a distance to each other, but can also be arranged between the vertices of the V-shaped bracket and its free ends. All bars of the framework 14 for the formwork element 10 have a round cross-section and. Consist of structural steel.
  • a device 20 for producing the shuttering element 1, 10 can be seen schematically.
  • the device 20 includes a feed table 21 on which in the illustrated embodiment are already cut to the desired length rods 3, 13, which form the holding device. However, the support rods can also be withdrawn from a rack and fed continuously. Perpendicular to the plane of the drawing in Fig. 3, the support rods 3, 13 their predetermined distance D to each other and are arranged in parallel.
  • the guide table 21 has for each of the support rods 3, 13 a feed finger 22 which engages the trailing end of each support rod 3, 13 such that the support rods 3, 13 together feed controlled in the direction of its longitudinal extension and in the direction of arrow A to a spot welding station 23 are moved.
  • the spot welding station 23 has as essential features two electrodes 24 and one above the incoming support rods 3, 13 arranged, preferably magnetic stop 25 for the Abdeckstäbe 2, which are supplied from a above the spot welding station 23 arranged feeder 26.
  • the feed device 26 has a rotatable in the direction of arrow B drum 27, in the periphery of receiving grooves 28 are provided, each of which can accommodate only a single cover rod 2.
  • the cover rods 2 lie on a ramp 29 and are guided by this to the drum 27.
  • a cover rail 30 ensures that the cover rods 2 remain in their grooves 28 until they are directly above the spot welding station 23.
  • the cover rail 30 is interrupted by a feed gap 31 through which the cover rods 2 can each fall individually into their predetermined position on the support rods 3, 13.
  • the feed fingers 22 continue to move, so that the following Abdeckstab 2 fall on the support rods 3, 13 and can be welded there.
  • the feed rate A of the feed finger 22 and the rotational speed B of the drum 27 are controlled and matched so that for the production of the formwork element 1, the cover bars 2 intermittently and with such a time interval on the support rods 3 that the predetermined spatial distance a is achieved ,
  • the resulting sheet is removed and optionally further processed by cutting and / or bending.
  • cover rods 2 are welded over the entire length of the support rods 3 and the resulting sheet material optionally subsequently cut into the desired dimensions.
  • a cutting device can connect to the spot welding station, which cuts the flat material at predetermined locations in dependence on the control of the feed (number of cycles and time).
  • the production of the formwork element 10 is preferably carried out in two steps, wherein in one step, the U-shaped bracket forming support rods 13 are welded to the Abdeckstäben 2, which is ensured by a convenient control that the cover rods 2 only on the legs of the U- shaped bracket 13 are provided where they later form a shuttering wall, and the bridge of the U-shaped bracket remains free.
  • the holder 15 is produced in the same device 20, wherein the V-shaped bracket 17 forming rods analogous to the support rods 3, and the cross-connecting rods 17 are analogously supplied to the cover rods 2. Subsequently, the two parts of the framework as shown in Fig. 2, U- or V-shaped bent and welded together.
  • the formwork element according to the invention can also be produced in other forms, e.g. as gutter formwork without joint tape holder.
  • the joint tape holder can be further prepared by means of U-shaped brackets instead of the V-shaped bracket shown in Fig. 2.
  • rods with round cross-section strip or strip-shaped rods can be used. If the electrodes of the spot welding device can be moved perpendicularly to the plane of the drawing in FIG. 3, then it is also possible with a sophisticated control to first produce the formwork element according to FIG. 2 in a single operation as flat material and then to bend it up accordingly.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Mechanical Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Bipolar Transistors (AREA)
  • Saccharide Compounds (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Semiconductor Memories (AREA)
  • Surgical Instruments (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Weting (AREA)
  • Element Separation (AREA)

Claims (13)

  1. Elément de coffrage (1, 10) pour des coffrages perdus dans la construction en béton, comportant un élément de fixation (3, 13) en métal auquel est fixée une structure de paroi métallique retenant le béton, caractérisé en ce que la structure de paroi est formée par une multiplicité de tiges de recouvrement métalliques (2) sensiblement parallèles qui sont fixées au dispositif de fixation (3, 13) en métal et qui sont maintenues grâce à celui-ci à une distance (a) les unes des autres qui est adaptée à la qualité du béton et qui retient le béton.
  2. Elément de coffrage selon la revendication 1, caractérisé en ce que la distance (a) entre les tiges de recouvrement (2) va jusqu'à 30 mm, de préférence de 6 à 8 mm.
  3. Elément de coffrage selon la revendication 1 ou 2, caractérisé en ce que les tiges de recouvrement (2) ont un diamètre (d) qui va jusqu'à 12 mm, de préférence de 3 à 5 mm.
  4. Elément de coffrage selon l'une des revendications 1 à 3, caractérisé en ce que le dispositif de fixation comporte au moins une tige de fixation (3, 13) qui s'étend sensiblement transversalement par rapport aux tiges de recouvrement (2).
  5. Elément de coffrage selon la revendication 4, caractérisé en ce qu'il est prévu une multiplicité de tiges de fixation (3, 13) parallèles et espacées les unes des autres suivant la distance (A).
  6. Elément de coffrage selon la revendication 5, caractérisé en ce que la distance (A) entre les tiges de fixation (3, 13) est d'environ 10 à 25 cm, de préférence de 20 cm.
  7. Elément de coffrage selon l'une des revendications 4 à 6, caractérisé en ce que la tige de fixation (3, 13) a un diamètre (D) qui va jusqu'à 12 mm.
  8. Elément de coffrage selon l'une des revendications 1 à 7, caractérisé en ce que le dispositif de fixation est formé par au moins une tige d'ossature, conçue comme une tige de fixation (13), d'un élément de coffrage (10) pourvu d'une ossature autoporteuse (14), et les tiges de recouvrement (2) forment une paroi de coffrage qui n'est prévue que par zones sur l'élément de coffrage (10).
  9. Elément de coffrage selon la revendication 8, caractérisé en ce que l'ossature (14) comporte plusieurs tiges de fixation pliées en U (13) qui sont maintenues espacées les unes des autres par les tiges de recouvrement (2) fixées à leurs branches.
  10. Elément de coffrage selon la revendication 8 ou 9, caractérisé en ce que l'ossature (14) comporte des armatures sensiblement en V (16) qui, pour former une fixation (15) pour une bande couvre-joint, sont fixées aux tiges de fixation (13) pliées en U.
  11. Procédé pour fabriquer un élément de coffrage selon l'une des revendications 1 à 10, caractérisé en ce que des tiges en métal (3, 13) du dispositif de fixation sont amenées dans le sens (A) de leur extension longitudinale, parallèlement et espacées les unes des autres, dans une station de soudage par points (23) et en ce que les tiges de recouvrement en métal sont amenées transversalement par rapport à leur extension longitudinale dans la station de soudage par points (23) et sont soudées suivant une distance (a) aux tiges de fixation (3, 13).
  12. Procédé selon la revendication 11, caractérisé en ce que les tiges de fixation (3, 13) qui sont amenées dans le sens de leur extension longitudinale ne sont coupées qu'une fois soudées.
  13. Procédé selon la revendication 11 ou 12, caractérisé en ce que pour fabriquer un élément de coffrage (10) comportant une ossature autoporteuse (14), on commence par souder au moins quelques tiges (2, 13) qui forment l'élément de coffrage (10), pour former un matériau plat, on les coupe éventuellement puis on les plie suivant la forme de l'ossature (14).
EP96120679A 1996-02-09 1996-12-20 Elément de coffrage Expired - Lifetime EP0789116B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19604766 1996-02-09
DE19604766A DE19604766C1 (de) 1996-02-09 1996-02-09 Schalungselement

Publications (2)

Publication Number Publication Date
EP0789116A1 EP0789116A1 (fr) 1997-08-13
EP0789116B1 true EP0789116B1 (fr) 2007-12-12

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Family Applications (1)

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EP96120679A Expired - Lifetime EP0789116B1 (fr) 1996-02-09 1996-12-20 Elément de coffrage

Country Status (6)

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EP (1) EP0789116B1 (fr)
AT (1) ATE380911T1 (fr)
DE (2) DE19604766C1 (fr)
DK (1) DK0789116T3 (fr)
ES (1) ES2299176T3 (fr)
PT (1) PT789116E (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20304109U1 (de) 2003-03-14 2003-06-12 MSL Mathieu Schalungssysteme und Lufttechnische Komponenten GmbH, 66625 Nohfelden Fugenbandabschalanordnung
DE102004040274A1 (de) 2004-08-19 2006-02-23 Fwr Solutions Gmbh Schalungselement
EP1978159A1 (fr) * 2007-04-04 2008-10-08 Bauer Spezialtiefbau GmbH Coffrage pour étanchér des modules des rideaux souterrains

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH191780A (de) * 1936-06-05 1937-07-15 Merz Hermann Bauelement zur schalungslosen Herstellung eines tragenden Mauerwerkes.
FR2388944A1 (fr) * 1977-04-25 1978-11-24 Bernold Jean Grille d'armature et de coffrage
FR2616040A1 (fr) * 1987-06-05 1988-12-09 Grimaud Freres Sa Fond de cage grillage
FR2625525A1 (fr) * 1987-12-31 1989-07-07 Carlo Giuseppe Di Procede de construction d'une piscine utilisant un beton arme coule simultanement pour former le fond, les murs et les plages sans coffrage perdu et piscine ainsi obtenue

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR567031A (fr) * 1923-06-05 1924-02-23 Procédé de construction de murs et cloisons
DE907581C (de) * 1951-12-13 1954-03-25 Georg Schwab Putztraegermatte aus Rohrhalmen oder Holzstaeben und aus solchen Matten zusammengefuegter Putztraeger
AU481679B2 (en) * 1974-04-10 1975-10-16 Avi Alpenlandische Veredelungs-Industrie Gesellschaft M. B. H A reinforcing element for concrete
DE9005482U1 (de) * 1990-05-14 1991-09-12 Fischer, Willibald, 8312 Dingolfing Schalungsplatte
DE4111062C1 (fr) * 1991-04-05 1992-05-14 Peca-Verbundtechnik Gmbh, 8312 Dingolfing, De
DE9206140U1 (de) * 1992-05-07 1993-09-09 Peca-Verbundtechnik Gmbh, 84130 Dingolfing Schalung
DE9412584U1 (de) * 1994-08-04 1994-09-29 Fa. Walter Holzmann, 49196 Bad Laer Vorrichtung zum Abstützen eines Schalbretts auf einem Mauerwerk

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH191780A (de) * 1936-06-05 1937-07-15 Merz Hermann Bauelement zur schalungslosen Herstellung eines tragenden Mauerwerkes.
FR2388944A1 (fr) * 1977-04-25 1978-11-24 Bernold Jean Grille d'armature et de coffrage
FR2616040A1 (fr) * 1987-06-05 1988-12-09 Grimaud Freres Sa Fond de cage grillage
FR2625525A1 (fr) * 1987-12-31 1989-07-07 Carlo Giuseppe Di Procede de construction d'une piscine utilisant un beton arme coule simultanement pour former le fond, les murs et les plages sans coffrage perdu et piscine ainsi obtenue

Also Published As

Publication number Publication date
ES2299176T3 (es) 2008-05-16
PT789116E (pt) 2008-01-17
DE59611453D1 (de) 2008-01-24
EP0789116A1 (fr) 1997-08-13
DE19604766C1 (de) 1997-09-04
ATE380911T1 (de) 2007-12-15
DK0789116T3 (da) 2008-03-31

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