EP3176347A1 - Plateau de coffrage pour coffrages de béton - Google Patents

Plateau de coffrage pour coffrages de béton Download PDF

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Publication number
EP3176347A1
EP3176347A1 EP16205457.1A EP16205457A EP3176347A1 EP 3176347 A1 EP3176347 A1 EP 3176347A1 EP 16205457 A EP16205457 A EP 16205457A EP 3176347 A1 EP3176347 A1 EP 3176347A1
Authority
EP
European Patent Office
Prior art keywords
formwork
support structure
formwork skin
plastic
panel
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.)
Granted
Application number
EP16205457.1A
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German (de)
English (en)
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EP3176347B1 (fr
Inventor
Kai Hollmann
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Polytech GmbH
Original Assignee
Polytech GmbH
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Publication date
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Application filed by Polytech GmbH filed Critical Polytech GmbH
Publication of EP3176347A1 publication Critical patent/EP3176347A1/fr
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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
    • E04G11/06—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
    • E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
    • 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
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/001—Corner fastening or connecting means for forming or stiffening elements
    • 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
    • E04G17/02—Connecting or fastening means for non-metallic forming or stiffening elements
    • 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
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing
    • E04G21/0418—Devices for both conveying and distributing with distribution hose
    • E04G21/0445—Devices for both conveying and distributing with distribution hose with booms
    • E04G21/0463—Devices for both conveying and distributing with distribution hose with booms with boom control mechanisms, e.g. to automate concrete distribution
    • 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
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G9/05—Forming boards or similar elements the form surface being of plastics
    • 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
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G2009/028—Forming boards or similar elements with reinforcing ribs on the underside

Definitions

  • the invention relates to a formwork panel for concreting formwork, which has a supporting structure and a separate formwork skin connected to the supporting structure, characterized, that the support structure consists essentially of plastic; and that the formwork skin, which is formed essentially of plastic by a single formwork shell element essentially of plastic or of a plurality of formwork skin elements, is connected in a detachable manner to the support structure.
  • the support structure may be a uniform plastic molded part.
  • the single or the respective formwork skin element may be a uniform plastic molded part.
  • Formwork panels for concreting formwork are known in many designs.
  • Monolithic formwork panels are uniform structures made of the same material throughout. So you know, for example monolithic formwork panels made of aluminum, monolithic plastic formwork panels, and monolithic formwork panels of a welded steel construction.
  • Composite formwork panels usually consist of a support grid (frame) and a formwork skin, which is attached to one side of the support grid on this.
  • the support grate is the main component of the formwork panel, with support grids being made of wooden girders, steel girders or aluminum girders.
  • the formlining is usually short-lived as the support grid and is replaced in particular due to wear, damage or fatigue after a certain number of applications of the formwork panel. Common is the attachment of the formwork to the support grid by means of screws or rivets.
  • the formwork skin is usually made of multi-layer plywood; But one also knows Schalphase that are designed as composite construction plywood layers / plastic layer or aluminum layer / plastic layers or glass fiber mats / plastic layers.
  • both the support structure consisting essentially of plastic and the single formwork skin element or the plurality of formwork skin elements are each essentially made of plastic.
  • the support structure may consist entirely of plastic.
  • the only formwork skin element or the plurality of formwork skin elements can each consist entirely of plastic.
  • fiber reinforced plastic with "short fibers", i. H. in the terminology of this application fibers having an average length equal to or less than 1 mm, or "long fibers", d. H. in the term of this application fibers with an average length of more than 1 mm (fibers with an average length of several millimeters are quite possible) can be worked.
  • plastic which is made by means of "short fibers” and / or mineral particles, e.g. Calcium carbonate, talc, or other known particles. Both in the support structure and in the formwork can also be used with other reinforcing agents.
  • releasable used in the first paragraph of the description (one could alternatively also define as “removable") means that a connection type is used which makes it possible to remove the single formwork skin element or the several formwork skin elements from the support structure in each case. Preferably, the removal should be possible with little effort. Preferably, the freed from the formwork support structure should continue to be used by attaching a new single formwork element or several new formwork skin elements to her. The only formwork skin element removed from the support structure or the several formwork skin elements removed from the support structure can each be easily recycled, since they are at least essentially of the same material.
  • the formwork panel according to the invention may be designed such that the front of the formwork skin, i. the shell skin surface coming into contact with the mushy concrete during use of the formwork panel is free from the presence of formwork panel constituents which are related to the bonding of the formwork liner to the support structure.
  • the front of the formwork skin i. the shell skin surface coming into contact with the mushy concrete during use of the formwork panel
  • formwork panel constituents which are related to the bonding of the formwork liner to the support structure.
  • the connectedness of the formwork with the support structure is favorably only at the back of the formwork. If you z. B. screws used to connect the formwork skin with the support structure, it is good to make the training so that the screws are screwed from the back of the panel.
  • the formwork of a formwork panel is subject to aging. There is wear during the pouring or pouring of concrete slurry and when stripping the solidified concrete; there is a certain fatigue of the material due to the changing load (load by the concrete pressure / discharge during stripping); and during transport to the construction site, during transport on the construction site, during handling, etc. experience has shown that it is always damaged. Therefore, the formwork has to be replaced after a certain number of application of the formwork panel, and due to the inventive construction of the formwork panel this is particularly easily possible.
  • Plastic injection molding, plastic die casting ("compression molding", introduction of plastic granules or even plate-like precursors or so-called preforms into a divided mold, heating of the mold to melt the plastic or for thermal curing) are well suited the plastic, cooling the mold to set thermoplastic), thermoforming (a thermoplastic sheet or sheet is heated and pressed into a cooled mold or vacuum) and called plastic extrusion.
  • the support structure is a component with a comparatively complicated shape. It is particularly favorable to carry out the support structure as - essentially or wholly - an integral injection-molded component made of plastic.
  • the exemplary embodiments described below will make it even clearer that, especially with an injection-molded component, it is possible to achieve a shape of the support structure which is favorable for the load acceptance, the durability and for the appearance of the support structure. It is expressly pointed out that it is detectable on the finished component, if it is an injection-molded component, in particular on the relatively small wall thickness, the relatively small radii, the finely modeled shape, the sprues, etc.
  • the support structure may be an injection molded component, from which Shape one can conclude that it has actually been molded by injection molding.
  • the support structure is-substantially or wholly-an integral die-cast component made of plastic.
  • the support structure may be a die-cast component which may be inferred to be molded by plastic die casting.
  • At least one formwork skin element is present which is-substantially or wholly-an integral injection-molded plastic component.
  • This formwork skin element may be a component in which one can deduce from the shape that it has been produced by injection molding.
  • the formwork skin element or the formwork skin elements are components which generally have a less complicated shape than the supporting structure.
  • At least one formwork skin element is present, which is - substantially or wholly - an integral die-cast component made of plastic.
  • This formwork skin element may be a component in which it can be concluded from the shape that it has been produced by die casting of plastic.
  • the relevant formwork skin element is substantially plate-like with molded extensions for specific purposes, as will be explained in more detail below, but may have their own stiffening ribs to reduce local formwork deflection.
  • the support structure is designed substantially as a grid.
  • a grate formation creates optimal conditions for supporting the formwork in relatively small "support distances" by the support structure, so that the formwork can still be dimensioned relatively thin while still sufficient load capacity.
  • the support distances are everywhere less than 25 cm, more preferably less than 20 cm, and more preferably less than 15 cm.
  • the walls i. four edge walls and a significant number of partitions, at least in part (conveniently all) designed as double walls.
  • the mentioned connectedness of the two partial walls can be designed such that, apart from the channels below to be described perpendicular to the panel front, respectively, the distance spaces between the two part walls are closed at the Schafelschseite continuously through the material areas to the outside.
  • a connection of the two partial walls can be provided in each case by a series of spaced "connecting bridges" both on the front side and on the rear side of the supporting structure.
  • the support structure is not formed substantially as a grid, so the training essentially as a grid by means of one hereby expressly disclosed Disclaimers is excluded.
  • the formwork skin ie, the single formwork shell element or the plurality of formwork skin elements respectively
  • the support structure By means of screws and / or rivets and / or clip connections and / or molten extensions of integrally formed connecting pins and / or releasable adhesive bond (s).
  • clip connections includes in particular compounds with resilient tongues, of which areas engage behind counter-elements, in the jargon also called Snap-Fit, as well as compounds with everted areas (low: only slightly everted), in invaginated counter areas (low: only slightly inverted) sitting pressed down; see also the embodiments.
  • Snap-Fit compounds with resilient tongues, of which areas engage behind counter-elements, in the jargon also called Snap-Fit, as well as compounds with everted areas (low: only slightly everted), in invaginated counter areas (low: only slightly inverted) sitting pressed down; see also the embodiments.
  • One of ordinary skill in the art knows how to connect two plastic parts together by means of a re
  • the subject matter of the invention is also a formwork panel for concreting formwork which has the features specified in the first paragraph of the description, but without the adjective "detachable".
  • This formwork panel may have one or more of the more specific features disclosed in the application. Concreting wall formwork and concreting slab formwork, in which these formwork panels are available, are possible.
  • the manufacturing methods disclosed in the application also apply correspondingly to these formwork panels. So it is particularly possible to connect the formwork skin by welding (s) with the support structure. At most, such connections can be reversed again with considerable effort in such a way that at least the supporting structure can be reused.
  • At least one formwork skin element has at least one or more integrally formed extensions which have or have a function in the transmission of any tensile forces between the support structure and the relevant formwork skin element (and vice versa, of course).
  • the formwork panel according to the invention is meant by tensile forces such forces acting at right angles to the formwork front.
  • the tensile forces occur, in particular, when pulling the formwork panel away from the hardened concrete of a manufactured concrete product.
  • the mentioned tensile forces can also be force components of forces that have a different direction altogether.
  • the extension (or the extensions) may in particular be an extension for screwing in a screw.
  • the extension (or the extensions) In particular, an extension can be for a previously mentioned "everted region sitting in a recessed region" connection.
  • the female / male engagement may each be formed by one or more extensions formed on this formwork skin element which engage with a receptacle formed in the support structure. It is good if the relevant extension sits substantially laterally-free play in the recording.
  • a favorable possibility of realizing the positive female / male engagement is that of the formwork facing end of at least one wall, better several walls or all walls, which has the support structure, continuously or partially provided with a sequence of extensions and recordings, eg in the manner of a toothing on a rack.
  • at the rear of the formwork skin at least partial sequences of extensions and receptacles are provided in those areas where end regions of the support structure walls are in engagement with the formwork skin, e.g. on the type of toothing on a rack.
  • extensions of the relevant wall of the support structure engage in receptacles of the formwork skin, and grasp extensions of the formwork skin in receptacles of the respective wall of the support structure in the manner of a mutually complementary engagement.
  • the shear strength of the engagement between the support structure and the facing is not limited to only one direction (from the many possible directions parallel to the facing surface).
  • the walls may be double walls, in particular as described above, but may also be differently shaped walls, in particular as described above.
  • extension / receiving engagement in the formwork element mentioned in the two preceding paragraphs and if at least a part number of these engagement projections at the same time is an extension or extensions are, the or which also has a function in the transmission of any tensile forces between the support structure and the relevant formwork skin element or have.
  • extension or extensions so the function of the tensile strength facing element / support structure attachment and the function of the immediate thrust transfer are present at the same place, which also improves the material balance.
  • the plastic of the support structure has a higher strength than the plastic of the single formwork skin element or the plastic or the plastics of the plurality of formwork skin elements.
  • the support structure may be designed to provide most of the overall strength of the formwork panel in the formwork panel, whereas the formwork panel provides only a minor portion of the total strength. In this case, one can afford to let the at least one formwork element consist of a plastic of lesser strength.
  • the plastic of the support structure is conveniently seen before a fiber-reinforced plastic, with particularly favorable possibility glass fibers or carbon fibers and being not only short fibers (less than / equal to 1 mm in length) but also longer fibers z. B. come with a length of several millimeters into consideration.
  • the aforementioned formwork skin element it is favorable to provide either a fiber reinforcement with comparatively short fibers or a reinforcement with particles, in particular mineral particles such as calcium carbonate particles and talcum particles.
  • a fiber reinforcement with comparatively short fibers or a reinforcement with particles, in particular mineral particles such as calcium carbonate particles and talcum particles.
  • particles in particular mineral particles such as calcium carbonate particles and talcum particles.
  • the aforementioned formwork skin element according to the invention is not maximum strength in the foreground, but good surface quality for good concrete surfaces, good recyclability and low price.
  • the plastic of at least one formwork skin element is selected such that the formwork skin element can be nailed.
  • formwork panels you have quite often the situation that z.
  • block-like parts or bar-like parts which then recesses or openings, which are also called recesses, molding in concrete
  • Abschalwinkel to form an end edge of the concrete product, which is also called shuttering or Stirnabschalung
  • the nailability mentioned at the beginning of the paragraph can be defined as the ability to hammer in a nail with a diameter of 3 mm without the formation of visible cracks around the point of impact.
  • the support structure at its two longitudinal sides and / or its two transverse sides in each case wall-like, in particular each double-walled, with a series of wall openings, in particular wall-transverse openings formed. These openings are easy to access when handling the panel and for connecting adjacent formwork panels.
  • the said wall openings and their surroundings can be designed such that at these points favorable mechanical coupling elements for coupling adjacent formwork panels can be connected and / or formwork accessories, such as directional supports or formwork brackets, can be connected.
  • formwork accessories such as directional supports or formwork brackets
  • the formwork panel in plan view has an area of at least 0.8 m 2 , preferably of at least 1.0 m 2 .
  • the construction according to the invention makes it possible to provide formwork panels of this size well in concrete pressure absorption capacity of up to 40 kN / m 2 , or also up to 50 kN / m 2 , or even up to 60 kN / m 2 , without being too large Druckafel mitbiegonne or too much material use and thus to have high weight.
  • plastics for the support structure and / or the formwork elements can be conveniently used thermoplastic materials, but also the use of thermosetting plastics is possible.
  • the term "at least one formwork skin element” has been used in several places. This is in the case of a formwork skin of a single formwork element this sole formwork element meant, whereas in the case that the formwork skin is formed of a plurality of formwork elements is to be said that at least one of these several formwork skin elements is formed as indicated. It is particularly favorable, however, if in each case several or all existing formwork skin elements of the formwork panel are formed accordingly. This applies individually to each of the places where the expression "at least one formwork element" is used. Overall, the case that the formwork is made of a single formwork element, the cheapest.
  • formwork panel in this application also includes formwork for columns.
  • Another object of the invention is a concreting wall formwork having a plurality of coupled, inventive formwork panels.
  • "Coupled” means “horizontally adjacent to one another at the relevant coupling site” and / or “adjoining one another at the relevant coupling site in the vertical direction”.
  • the coupling elements may each have a shape that is similar to a doorknob with integrally molded shaft portion. On the shaft area, two flanges can be provided.
  • the coupling elements may be configured to be in coupling engagement or out of coupling engagement by pivotal movement about the central axis of the shaft region to be brought.
  • the coupling elements may have one or more more specific features that can be determined from the FIGS. 33 to 35 to be discribed. Along the zone in which two adjacent formwork panels are in contact with each other, a coupling element or a plurality of coupling elements can be used.
  • posts may be provided at corners of the wall to be produced, with which formwork panels are coupled "over the corner". This applies both inside and outside on the wall corner or pillar corner to be produced.
  • the post concerned may in particular have a rectangular (longer than wide) or square horizontal cross section.
  • Another object of the invention is a concrete slab formwork in which a plurality of formwork panels according to the invention to form a larger slab formwork surface in spatial proximity on a support structure (which may also be a conventionally formed support structure) are supported.
  • the support structure may be formed so that the respective formwork panels are each supported on at least one Deckenschalungsstüzte and / or at least one Schafel carrier, which Schiefer carrier is in turn supported on slab formwork supports and / or main slab formwork supports, which main slab formwork support in turn on Deckenschalungsstüzten are supported.
  • the single formwork skin element has or have several integrally formed extensions on its rear side or the plurality of formwork skin elements, wherein screws are screwed into at least a part number of the extensions from the rear side of the support structure.
  • the screws can be self-tapping screws.
  • chalkboard will be used instead of “chalkboard for concreting sheathing”. All drawn and described formwork panels are designed by their dimensions and their load-bearing capacity so that they can withstand the stresses that are given when used in concreting shingles.
  • Panel 2 shown is composed of two components, namely a support structure 4 and a formwork skin 6, which is here formed by a single formwork skin element 8. Both the support structure 4 and the formwork skin element 8 consist entirely of plastic here.
  • the formwork panel has the shape or geometry of a cuboid, measured at right angles to the plane of FIG Fig. 1 visible Schalhautvorderseite 10, which is also Schafelvorderseite 10 - a much smaller dimension or thickness d has as its length dimension l and its width dimension b. In the illustrated embodiment is z. As the length l 135 cm, the width b 90 cm, and the thickness d 10 cm.
  • the support structure 4 has the shape of a grid.
  • Each of the two longitudinal edges has the shape of a double-walled wall 12, and each of the two transverse edges has the shape of a double-walled wall 14.
  • the clearances between the longitudinal intermediate walls 16 and between the respective "last" longitudinal intermediate wall 16 and the respective longitudinal edge wall 12 are all the same with each other.
  • the clearances between the transverse partitions 18 and between the respective "last" transverse partition 18 and the respective transverse edge wall 14 are all equal to each other and moreover equal to the previously described distance between the various longitudinal walls 12, 16.
  • Between the various walls 12, 14, 16, 18 is thus a matrix-like or checkered arrangement of - in plan view of the front ( Fig. 3 ) or on the back ( Fig. 4 ) - each substantially square openings 20 are formed, which are open both to the front 22 of the support structure 4 out and the back 24 of the support structure 4, but in a slightly different size, as will be described in more detail below.
  • nine openings 20 are provided in series in the longitudinal direction l of the support structure 4, in the transverse direction b six openings 20 in series.
  • each clear opening 20 about 10 x 10 cm in size.
  • the flanges 28 bring additional plastic material in the vicinity of the front side 22;
  • the support surface for the formwork skin 6 is increased and the clear distances between the supports for the formwork skin element 8 are reduced.
  • the clear cross section at the front side 22 is smaller than at the rear side 24, where it is about 12 x 12 cm in size.
  • the longitudinal edge walls 12 and 14 have in each case at those points where the inside of the longitudinal wall 12 and 14, an opening 20 is located, an oval,
  • the openings 30 each pass through the edge wall 12 or 14 completely (ie pass through both partial walls of the double-wall structure) and are surrounded by an opening perimeter wall 32. It should also be noted at this point that, in the case of the edge walls 12 and 14, the outer surface (that is to say, away from the center of the support structure 4) is set back a small distance in relation to the outer contour of the support structure 4. In other words, the outer contour on the rear side 24 is a slightly larger rectangle than the rectangle line along said outer surfaces of the edge walls 12 and 14.
  • a channel 34 round cross-section is present, with respect to the adjacent three or four , formed by the double wall structure spaces 36 is delimited by walls 38.
  • the channels 34 each pass from the front side 22 to the rear side 24.
  • the formwork skin element 8 has the shape of a plate with rear extensions 40.
  • circular openings 42 which are located in the vicinity of the longitudinal edges of the formwork skin element 8, will be discussed in more detail below.
  • the projections 40 are each present at an intersection between partition walls 16 and 18 and at a T-position between an edge wall 12 and 14 and an intermediate wall 16 and 18, except those locations where the four openings 42 are present.
  • the extensions 40 are thus arranged in the pattern of a matrix or in a checkerboard pattern.
  • each extension 40 enters the front end region of a channel 34 Fig. 7 it can be seen that each respective channel 34 in its front side 22 of the support structure 4 adjacent end portion has a reduced circular cross-section, so that in the direction of the back 24 of the support structure 4 directed toward a shoulder 44 is formed. Further one sees in Fig. 7 and 8th in that each extension 40 is subdivided by corresponding slots 46 running in its longitudinal direction into four tongues 48 distributed over the extension circumference.
  • each of the tongues has 48 in the middle region of its length outside, in each case, a shoulder 50, which extends part-circularly over a little less than 90 ° and, in the assembled state, is latched outwardly from the supporting structure 4 and facing element 8 behind the relevant shoulder 44 of the channel 34 or the supporting structure 4.
  • each of the extensions 40 At its center, ie, inside between the four tongues 48, each of the extensions 40 has an axially extending cavity 52 which ends approximately at the level of the plate rear side 54 of the formwork element 8.
  • each of the tongues 48 is beveled in its rear side 24 of the support structure 4 facing end portion on its outside, see reference numeral 56.
  • the extensions 40 for assembling support structure 4 and formwork element 8 respectively in the end smaller Cross section of a channel 34 are introduced. Due to the inclined surfaces 56, the tongues 48 are elastically compressed slightly to the extension center axis, and the respective extension 40 passes ever further into the respective channel 34 until - by elastic springing back the tongues 48 to the outside - the shoulders 50 of the respective extension 40th snap behind the shoulder 44 of the respective channel 34.
  • each extension 40 By the described engagement of each extension 40 with the shoulder 44 of a channel 34, a connection between the support structure 4 and the formwork element 8 is provided which holds the support structure 4 and the formwork element 8 against the action of tensile forces in the longitudinal direction of the channels 34 or - in other words - act at right angles to the panel front 10.
  • the formwork skin element 8 in each case has a circular opening 42 at two locations near one longitudinal edge and at two locations near the other longitudinal edge.
  • Each of the openings 42 is located at a point at which a channel 34 is positioned in the support structure 4.
  • a so-called clamping anchor which is here in interest, the central region of the clamping armature essentially a rod
  • Such tension anchors are particularly useful in concreting wall formwork where formwork panels are spaced apart to produce a concrete wall by pouring the clearance space with concrete.
  • the attachment of the formwork skin element 8 to the support structure 4 is releasable. It is only necessary to compress the tongues 48 of the extensions radially in order to be able to then remove the formwork skin element 8 from the support structure 4.
  • An alternative possibility is the execution of a rotational movement of the formwork skin element 8 relative to the support structure 4, which destroys the attachment.
  • the plate-like portion 9 of the formwork skin element 8 ie the formwork skin element 8 without the extensions 40, on all four edges at the rear has a thicker in the direction of the shell skin thickness d edge strip 11 which there the resilience and wear resistance of the formwork skin element 8 and increases the tightness of the panel 2 to adjacent formwork panels 2.
  • the "plate thickness" of the plastic is 5 mm.
  • the channels 34 used for the detachable connection or attachment of the support structure 4 and the formwork element 8 do not have a reduced cross-section in the end region adjacent the front side 22 of the support structure 4, but in the end region adjacent the rear side 24 of the support structure 4 a hollow, in cross-section round neck 60, which has a smaller cross section than the rest of the channel 34 both on the inner circumference and on the outer circumference.
  • the projections 40 now each have a cross section, which can be described as a hollow cylindrical, central neck 62 with four radially extending, arranged at 90 ° angle spacing ribs 64.
  • Each extension 40 protrudes for a length from the plate rear side 54 of the formwork element 8, which corresponds approximately to one third of the thickness of the support structure 4.
  • the four ribs 64 have a dimension such that the rib ends go straight into the four inner corners 66 of the respective channel 34.
  • each of the integrally formed extensions 40 and thus the entirety of the extensions 40, by cooperation with the respective channels 34 by means of female / male interventions, provides a bond between the support structure 4 and the formwork element 8 which can transmit thrust forces acting in parallel with the formwork front 10.
  • the second embodiment tends to be more efficient to produce than the first embodiment and allows slightly larger dimensional tolerances between the support structure 4 It is emphasized that a screw 70 does not have to be installed in each of the channels 34. For the strength of the connection, it is sufficient if only a part of the channels 34, a screw 70 is screwed.
  • the extensions 40 can be designed to be more stable in bending than in the first embodiment.
  • channels 34a and formwork skin openings 42 for tie rods.
  • an extension 40b which, compared with a "normal extension" 40a on the longitudinal edge of the formwork element 8, is displaced somewhat to the longitudinal center line of the formwork element 8.
  • channels 34b there are correspondingly slightly offset channels 34b in the support structure 4.
  • the channels 34 in the support structure 4 have a circular cross-section and neither a cross-sectional reduction in the end adjacent the support structure front side 22 nor a cross-sectional reduction in the end adjacent the support structure rear side 24.
  • the formwork element extensions 40 here have the shape of a central hollow stub 62 with z. B. eight circumferentially distributed ribs 64 which are significantly shorter in the radial direction than in the second embodiment. As in the second embodiment, a self-tapping screw 70 is screwed into an extension 40 at the points where this is deemed necessary.
  • the fourth embodiment differs from the previous embodiments essentially by the type of connection or mutual attachment of support structure 4 and formwork skin element 8.
  • each of the extensions 40 has on its outer periphery - lying in a first plane - on its outer side a first, interrupted, series of circumferentially extending everted portions 80. In a second plane which is axially spaced from the first plane is a second, interrupted row of everted portions 80 on the outer circumference.
  • the number of circumferential rows may alternatively be less than or greater than two.
  • invaginated areas 82 On the inner circumference of the respective, associated channels 34 of the support structure 4 are invaginated areas 82, also in circumferentially interrupted areas in two levels or more levels or less levels available.
  • the everted portions 80 and the invaginated portions 82 are positioned so that upon assembly of support structure 4 and formwork element 8 with slight elastic deformation of extensions 40 and / or channel walls, the everted portions 80 in the invaginated counter regions 82 and there to apply a considerable Release force or extraction force firmly. Between each extension 40 and each associated channel 34 thus a female / male engagement is generated.
  • Such slightly everted areas 80 and such slightly inverted counter areas 82 can be formed in the molding of the support structure 4 and the formwork element 8 in particular by plastic injection molding or by plastic die-casting, without that one would have to use slide in the manufacturing form, which transversely to the main extension plane of support structure 4 or Schalhautelement 8 move. Rather, the manufacturing mold at the locations where everted areas 80 are to be formed simply have corresponding recesses. The produced plywood element can be ejected from the mold cavity with elastic deformation, in particular while the molding product is still warm. Conversely, in forming the support structure 4, the manufacturing mold has corresponding bulges at the locations where the invaginated areas 82 are to be formed. For the ejection from the production form that applies to the formwork skin element 8 statements accordingly. Alternatively, the projections 40 can be equipped with recessed areas and the channels 34 with everted areas.
  • the extensions 40 take in the illustrated embodiment about a quarter of the length of the channels 34 a.
  • the channels 34 may be closed at its end adjacent the support structure back 24 (see the left extension 40 in FIG Fig. 23 ) or be open (see the in Fig. 25 right channel 23).
  • Hohle circular shape and hollow square shape of the extensions 40 are practical, but can also be replaced by other cross-sectional shapes. Drawing the case of two different geometries of the extensions 40 drawn. All geometries can be the same or more than two different geometries can be realized.
  • the fifth embodiment differs from the previous embodiments substantially only by the manner of connection of the support structure 4 and the formwork element 8.
  • the following description of the fifth embodiment will focus on the description of the differences from the previous embodiments.
  • Fig. 24 and 25 sees particularly quickly, has the formwork skin element 8 extensions 40, which like the extensions in the second embodiment (see in particular Fig. 11 and 13 ) are formed, but without a central, axially extending cavity. Also, no screws are provided which are screwed into the extensions 40 from the support structure rear side 24.
  • the extensions 40 cooperating with the corresponding channels 34 (female / male engagement respectively), thus assume only the task of mutual positional fixing of the support structure 4 and the formwork skin element 8 as well as the transmission of the above-mentioned shear forces.
  • plate-like extensions 84 are integrally formed on the formwork skin element 8 at the rear.
  • Per opening 20 in the support structure 4 has two extensions 84 and three extensions 84 is provided in the case of the edge adjacent openings 20 in this embodiment.
  • Fig. 30 it can be seen that the openings 20 in those areas near the support structure front, where projections 84 "come in” during the assembly of the support structure 4 and the formwork element 8, have molded-on projections 86 projecting towards the center of the relevant opening 20.
  • the projections 86 each have a shoulder 88 on their side facing the support structure rear side 24.
  • the extensions 84 each have, at their end remote from the plate rear side 54 of the facing element 8, two projections 90 pointing away from the center of the relevant opening 20.
  • the projections 90 are each bevelled on their side facing away from the center of the relevant opening 20 (see reference numeral 92) and have a shoulder 94 on their end facing the back of the plate 54.
  • the extensions 84 When pushing together the formwork skin element 8 and supporting structure 4, the extensions 84 are elastically bent inwards, ie toward the center of the corresponding opening 20, due to the interaction of the inclined surfaces 92 with the inner sides of the projections 86. As soon as the formwork skin element 8 is compressed in its entirety with the support structure 4, the extensions 84 snap outward, the shoulders 94 of the extensions 84 now bearing against the shoulders 88 of the projections 86.
  • the extensions 84 essentially assume no fixing function of the formwork skin element 8 relative to the support structure 4 in directions parallel to the formwork front side 10 and also no function in the assumption of the abovementioned thrust forces. Note that in Fig. 30 aware of a little game - measured horizontally in Fig. 30 - Has been drawn between the respective projection 86 of the support structure 4 and the relevant extension 84.
  • Fig. 29 illustrates that you can connect the support structure 4 and the formwork skin element 8 by gluing together or attach to each other, instead of using the previously described connection types.
  • a thin adhesive strip 96 Between the flanges 28 the respective double wall structure with hat-shaped cross section of the intermediate walls 16 and 18 on the one hand and the plate back 54 of the formwork element 8 on the other hand is a thin adhesive strip 96.
  • Adhesive strips 96 do not have at all points where flanges 28 and plate back 54 meet, and not in be provided full length possible. The extent of providing adhesive strip 96 depends on which total adhesive area is required to ensure the desired bond strength.
  • connection described by gluing is solvable, if one selects a suitable, familiar to the expert and available on the market adhesive, the z. B. can be solved by a selective solvent.
  • Fig. 30 illustrates two other possible ways in which the releasable connection or the releasable mutual fastening of support structure 4 and formwork element 8 according to the invention can accomplish.
  • the first of the two possibilities is the molding of relatively short, pin-shaped projections 40 on the plate rear side 54 of the formwork skin element 8, z. B. in each case a pin-shaped extension 40 (or several pin-shaped extensions 40) in the region of each intersection or a part number of intersections between partitions 16 and 18 and in the region of each T-spot or a part number of T-sites between partitions 16 and 18 and an edge wall 12 and 14.
  • a hole in the support structure 4 is provided in each case, for. B. at a corner transition of two flanges 28, as in Fig. 30 drawn.
  • the pin-shaped extension 40 is initially so long that it protrudes a piece when joining formwork skin element 8 and support structure 4 from the mentioned hole.
  • the outstanding end can be z.
  • To release the connection between the formwork skin element 8 and support structure 4 can be z.
  • each provides a rivet.
  • the rivet head formed in the production of the riveted joint for. B. as in, as in Fig. 30 drawn with reference numeral 98.
  • the rivet head must be removed, eg. B. by cutting off with a suitable pliers.
  • Suitable plastics from which the supporting structure 4 and the formwork skin 6 can be made are known to the person skilled in the art and are available on the market.
  • Suitable base plastics include polyethylene (PE), polypropylene (PP) and polyamide (PA).
  • the support structure 4, which carries a large part of the load on the formwork panel 2 may consist in particular of fiber-reinforced plastic, glass fibers and carbon fibers being mentioned as favorable examples. It is quite possible to use relatively long fibers (length over 1 mm up to a few centimeters).
  • the plastic of the support structure 4 has a greater strength than the plastic of the formwork skin element 8, which is nagelbar.
  • a length I of 135 cm, a width b of 90 cm, a thickness d of 10 cm, the thickness of the plate-like portion of the skin member 8 being 5 mm have been exemplified.
  • This exemplary dimension specification is also valid for all other embodiments. It is expressly understood, however, that according to the teachings of the invention trained formwork panels 2 may have even larger or even smaller formats. If you want to provide significantly larger formats, however, the required material usage increases disproportionately too, so that one comes to uneconomical and no longer hand-to-hand formwork panels. On the other hand, if you go to much smaller formats, the construction and dismantling of concreting formations becomes more complex; In addition, the number of joints increases between adjacent formwork panels, which joints you may see molded in the finished concrete product.
  • the respective support structure 4 and the respective formwork skin element 8 are each an integral injection-molded component made of plastic or in each case an integral die-cast component made of plastic, d. H.
  • Support structure 4 and formwork skin element 8 each have a shape which allows the production by plastic injection molding or by plastic die casting.
  • the openings 20 including inner sides of the flanges 28, the rear halves of the edge double walls 12 and 14 up to the openings 30, as well as the back surfaces of the material regions 26 closing the intermediate double walls 16 and 18 on the back side are formed by regions of the manufacturing mold from the rear side of the support structure 4.
  • the interspaces of the intermediate double walls 16 and 18 and the interstices of the edge walls 12 and 14 up to the openings 30 can be formed by regions of the manufacturing mold from the front side of the support structure 4 ago.
  • the channels 34 it depends on the channel shape whether to be formed entirely from the rear side of the support structure 4 (for example, in the first embodiment, see FIG Fig.
  • support structure 4 and formwork element 8 have a so-called Auszugsschrägung of typically 0.5 to 2 degrees, so that the halves of the manufacturing mold easily opened, the slides of the manufacturing mold are easily pulled out, and the plastic product easily from the manufacturing mold can be ejected.
  • plastic injection molding for the manufacturability of the support structure 4 by plastic die casting apply correspondingly.
  • the most important difference between plastic injection molding and plastic die casting is indeed in the molding of thermoplastics in that the plastic is injected liquid under pressure in the former case, whereas in the latter case the plastic is introduced in the form of solid granules in the mold cavity and is melted under pressure.
  • the back side 54 of the plate-like portion 9 of the formwork skin member 8 is a good position for the parting plane of the manufacturing mold can be formed by free spaces in the one half of the mold. This is particularly easy in the second, third, and fourth embodiment.
  • the formwork front side 10 and thus the entire panel front is free of components that have to do with the means for connecting or attaching support structure 4 and formwork element 8.
  • the formwork skin front 10 is, except for the openings 42, continuous flat (in the sense that the term "even” is commonly used in formwork skins, which does not mean a plane that is geometrically level in the strict sense of the word), so that it is on the surface of the concrete product to be produced signifies nothing else than the undisturbed surface of the formwork skin 6 and at most certain markings at the locations where joints between adjacent formwork skins 6 were.
  • openings are drawn, which extend at right angles to the formwork front side 10, extend through the double wall structure of the edge walls 12 and 14 and in the support structure rear side 24 adjacent end portion have a shape that one may be referred to as circular with two diametrical, substantially rectangular extensions (see particularly clearly Fig. 18 , top right; Fig. 22 ).
  • This form of opening end portions has nothing to do with claim features in this application.
  • a section of a concreting wall formwork 100 is shown, which is constructed with formwork panels 2 according to the invention. Specifically, a wall formwork is drawn for a wall going around a 90 ° corner.
  • wall formworks for straight walls, for columns, for T-shaped walls opening into one another, etc. can be created in a corresponding manner, the principles described below finding appropriate application in all these cases.
  • Fig. 31 are all the formwork panels 2 "vertically aligned", ie their longitudinal direction I is vertical and their width direction b and transverse direction is horizontal.
  • the formwork front 10 extends vertically in all formwork panels 2. It can be partially or everywhere with “horizontally oriented” formwork panels 2, ie longitudinal direction I is horizontal and transverse direction b is vertical, working.
  • Two of the full width b visible formwork panels 2 have the dimensions, as well as the formwork panels of all embodiments according to Fig. 1 to 30 ie, eight transverse baffles 18 and five longitudinal baffles 16, nine in number 20 in series as one progresses in the longitudinal direction and six in diameter 20 in series as one progresses in the transverse direction.
  • its width b is one third of the width of the "full-form panels 2", ie, one has only two openings 20 in series, as one proceeds in the transverse direction.
  • the length l of the last-described formwork panels 2 is equal to the length l of the full formwork panels 2.
  • the wall formwork thus has a height of 270 cm, which is a fairly common room height of concrete floor to underside of the ceiling in housing.
  • the Fig. 31 one sees that and how each adjacent formwork panels 2 or the last formwork panel 2 is coupled to the post 108. If you go down in the fourth outer opening 20 at the last outer corner panel 2a on the left vertical edge, you can see a part of a coupling element 110. On the right vertical edge of the same panel 2a can be seen four coupling elements 110 of the same type. Also in the left third, above, the Fig. 31 one sees a coupling element 110 of the same type. Coupling elements 110 of this type will be described below with reference to FIGS FIGS. 33 to 35 described in more detail.
  • Fig. 31 it can further be seen that and how two vertically adjacent shuttering panels 2 can be coupled together by coupling elements 110 of the same type by engaging the respective coupling element 110 through a pair of openings 30 in transverse edge walls 14 of two formwork panels 2.
  • tension anchors 112 (as already mentioned above in the application), which are each fixed by means of a nut plate 114 against the support structure rear sides 24 of two adjacent adjacent formwork panels 2.
  • the tension rod 112 passes through a channel of only one support structure 4, which extends at right angles to the formwork front side 10.
  • the adjacent shuttering panel 2 is included in the pressing operation via the nut plate 114.
  • Fig. 32 illustrates, by way of an example (of many possible examples), how a concrete slab formwork 120 can be formed using formwork panels 2 according to the invention.
  • the longitudinal centerline of the first described row and the longitudinal centerline of the second described row have a distance from one another which is substantially as large as the length l of the formwork panels 2 inserted between the rows, plus twice a half width of a formwork panel support 124.
  • Fig. 32 instead of in Fig. 32 shown construction of a slab formwork 120 with the invention Kunststoffafen 2 in particular ceiling slabs 120 of a structure with so-called main beams and so-called secondary beams can realize.
  • you have to start from Fig. 32 suggest that the spacing space between the parallel formwork beam supports 124 is bridged not by formwork panels 2 but by a series of side-by-side support beams (in which case the distance between the drawn formwork panel supports 124 is normally greater).
  • the carrier leading from support 122 to support 122 is called the "main carrier” and the carrier extending at right angles to it and placed on the main carriers is called “secondary carrier".
  • the formwork panels 2 are then placed so that they each bridge the distance between two adjacent subcarriers.
  • the subcarriers are those carriers which are referred to in the present application as Schafel carrier.
  • FIGS. 33 to 35 An exemplary embodiment of a coupling element 110 will now be described, which can be used in particular in wall formwork 100 according to the invention, but also for other purposes for which examples are given below.
  • the coupling element 110 shown in the drawing has an overall shape which is reminiscent of a door pawl with an integrated shaft about whose central axis 144 the coupling element 110 is pivotable overall.
  • the coupling element 110 may in particular be made of metal or of plastic.
  • the coupling element 110 has a shaft portion 140 and, integral with the shaft portion 140, an elongate grip portion 142 extending in a plane on which the imaginary center axis 144 of the shaft portion 140 is perpendicular.
  • the grip portion 142 itself is bent relatively close to the shaft portion 140 by about 45 ° in its plane.
  • a worker can attack by hand and then, favors through a lever arm given by the pitch center axis 144 distance, rotate the shaft portion 140 about its central axis 144.
  • the grip portion 142 integrally merges therewith at a first end portion of the shaft portion 140.
  • a first flange 148 in the form of an annular, radially outwardly projecting flange.
  • a second flange 150 At a clear distance a to the first flange 148 is in the second end portion of the shaft portion 140, a second flange 150, which has a more complicated, to be described in more detail below shape.
  • the clear distance a is - roughly speaking - in about as large as it is in aligned juxtaposed wall formwork shuttering panels 2 of the summed thickness of two edge walls 12 and 14 in the area around an opening in question 30, added the (small) clear distance between the outer surfaces of the pair of edge walls 12 and 14, respectively, as described in connection with the first embodiment and the reset of the outer surface of the edge walls 12 and 14, respectively.
  • the shaft region 140 in an intermediate flange region 141 is only substantially circular-cylindrical. More specifically, the waveband 140 has a somewhat oblong cross-section there, which may be made “oval-like” or “elliptical-like” or in the form of "two semicircles with two straight sections therebetween".
  • This cross-sectional shape falls in Fig. 33 optically not on, because the "thickness" or the "local diameter” at the shortest point is only slightly smaller than at the about 90 ° distant, longest point. The meaning of this cross-sectional shape will be described in more detail below.
  • the second flange 150 has an oval outer contour, ie a semicircular section 152 at each end and a straight section 154 therebetween.
  • the second flange 150 has been measured at right angles to the straight line Portions 154 between the semicircular portions 152 - a width c, which corresponds to the smallest thickness or the smallest diameter of the only substantially circular cylindrical portion 141 of the shaft portion 140 or is slightly smaller.
  • the second flange 150 has a dimension e that is distinct greater than the width c.
  • the amount of radial protrusion of the second flange 150 over the peripheral surface of the substantially circular-cylindrical portion 141 of the shaft portion 140 increases from 0 to a maximum amount as it advances 90 °, then advances 90 ° further from the maximum Maximum amount decreases to 0, then moves further 90 ° from 0 to a maximum amount, and finally advances 90 ° from the maximum amount to 0.
  • the shaft portion 140 with the second flange 150 of the coupling member 110 Due to the described geometry of the shaft portion 140 with the second flange 150 of the coupling member 110, one can insert the shaft portion 140 with the second flange 150 forward into an aligned pair of apertures 30 of two parallel positioned edge walls 12 and 14 of two adjacent form panels 2.
  • the openings 30 are, as stated above, oval or slot-like, and the described oval shape of the second flange 150 is such that the shaft portion 140 can be inserted with the second flange 150 first straight through the two openings 30, when the larger dimension e of the second flange 150 coincides with the longer length of the oval opening 30.
  • the beginning of this insertion process can be seen in Fig. 34 at the right coupling element 110, and the end of this insertion process can be seen in the in Fig.
  • the coupling element 110 can be pivoted about its central axis 144 by means of the gripping region 142, counterclockwise, looking at the end face of the shaft region 140 where the gripping region 142 leaves.
  • the pivotal movement of the handle portion 142 would constitute a clockwise pivotal movement, because one looks here on that end face of the shaft portion 140, where the second flange 150 is present.
  • the above-mentioned smallest thickness or the smallest diameter of the only substantially circular cylindrical portion 141 of the shaft portion 140 of the coupling element 110 extends in a direction parallel to the orientation of the width c of the second flange 150, and is slightly smaller than the -.
  • the longer dimension e of the second flange 150 and the largest thickness or the largest diameter of the portion 141 of the shaft portion 140 substantially with the longitudinal direction of the the second flange 150 and the portion 141 of the shaft portion 140 can be easily inserted with ease in the pair of apertures 30 involved, even if the two involved formwork panels 2 have some offset from each other in a direction perpendicular to the formwork faces 10 , In the subsequent pivoting of the coupling member 110 by about 90 ° gradually comes the largest thickness or the largest diameter of the area 141 in contact with those central areas of the opening peripheral walls 32 of the two participating openings 30, where the distance between opposite opening peripheral wall areas smaller than in the opening longitudinal direction is.
  • the pivotal movement of the coupling element 110 pulls the two involved form panels 2 into face-aligned position because the largest thickness or the largest diameter of the area 141 of the shaft portion 140 is as small as the respective size of the openings 30 of the two formwork panels involved, with only a slight play 2, measured in the middle opening area and at right angles to the formwork front 10.
  • the two edge walls 12 and 14 of the two shuttering panels 2 involved can also be clamped together with a certain offset in the longitudinal extension direction of the edge walls 12 and 14. After completing the insertion process described you can enter the two peripheral walls 12 and 14 involved Move piece in the longitudinal direction of the edge walls 12, 14 relative to each other and only then pivot the relevant coupling element 110 in the clamping position.
  • the openings 30 in the edge walls 12 and 14 are also suitable for coupling there formwork accessories, which, depending on the shape of the coupled region of the relevant formwork accessory with coupling elements, as in FIGS. 33 to 35 drawn and described with reference to these figures, work, or with the other hand, modified coupling elements, which are each brought into engagement with one of the openings 30 or with an aligned pair of openings 30.
  • coupling elements with a different flange spacing a can be used.
  • exemplary cases of coupling accessories to be coupled directional supports or formwork brackets are called. But you can also train other connection options at other points of the support structure 4 for formwork accessories.
  • coupling element 110 with its first flange 148 and its second flange 152 is indeed a particularly favorable embodiment of a coupling element 110 used in the invention, but that coupling elements of other embodiments, also with a different clamping mechanism 156, are useful in the invention.
  • Panel 2 shown is composed of two components, namely a support structure 4 and a formwork skin 6, which is here formed by a single formwork skin element 8. Both the support structure 4 and the formwork skin element 8 consist entirely of plastic here.
  • Each of the two longitudinal edges of the support structure 4 has the shape of a double-walled wall 12, and each of the two transverse edges of the support structure 4 has the shape of a double-walled wall 14. Between the transverse edge walls 14 and parallel to these there is a transverse wall. Between wall 18, which is double-walled, in which case the distance between the partial walls is larger than in the peripheral walls 12 and 14. Between the described walls 12, 14, 18 and each bounded by these are two in plan view quadrangular, formed large openings 20 which pass from the front 22 to the back 24 of the support structure 4. Instead of only a single transverse partition wall 18, as drawn, and a plurality of transverse partition walls 18 may be present.
  • Fig. 37 it can be seen that the double walls 12, 14, 18 are closed on the rear side 24 of the support structure 4 by parallel to the formwork front side 10 extending material regions 26, but at the front 22 of the support structure 4 open, ie with spacing between the part walls , are.
  • This shape is referred to as a U-shaped cross section of the double wall.
  • the modified embodiment according to Fig. 38 differs from the embodiment according to Fig. 37 only in that the double walls 12, 14, 18 in their front side 22 of the supporting structure 4 adjacent end region each have a projecting to the relevant opening 20, wall-widening flange 28, as in the seventh embodiment according to Fig. 29 already described and drawn.
  • This shape is referred to as a hat-like cross section of the double wall.
  • the rear closure of the spacing space between the partial walls of the transverse partition wall 18 through the material region 26 there is essentially continuous and possibly only interrupted by channels 34 and 42 with a comparatively small cross-section passing through from the front side 22 to the rear side 24 of the support structure 4. as already described and drawn in the previous embodiments.
  • the closure of the spacing space between the part walls is more severely interrupted by the material areas 26 there and divided into sections, as described and drawn in more detail in the preceding embodiments.
  • Panel 2 shown is composed of two components, namely a support structure 4 and a formwork skin 6, which is here formed by a single formwork skin element 8. Both the support structure 4 and the formwork skin element 8 consist entirely of plastic here.
  • Each of the two longitudinal edges of the support structure 4 has the shape of a wall 12, and each of the two transverse edges of the support structure 4 has the shape of a wall 14. From the one transverse edge wall 14 to the other edge transverse wall 14 extends approximately centrally a longitudinal Partition wall 16, which divides into two semicircular arms 200 in two places. When the two semicircular arms 200 are combined at each of these two locations, a wall section in the form of a full circle is defined there, which delimits a circular opening 20. Each of the two openings 20 passes from the front side 22 to the rear side 24 of the support structure 4. Where there is no opening 20, the back of the support structure 4 is closed by a plate-like material region 202, except for any channels 34 and 42. The boundaries of the walls 12, 14, 16 are partially drawn in broken lines because they lie behind the plate-like material region 202. There may be other, if desired, also different running intermediate walls; the number of openings may be less than or greater than 2.
  • the walls 12, 14, 16 are not formed as double walls, but could alternatively be formed as double walls.
  • the respective support structure 4 and the respective formwork skin element 8 are each an integral injection-molded component made of plastic or in each case an integral die-cast component made of plastic, ie support structure 4 and formwork skin element 8 each have a shape, which allows the production by plastic injection molding or by plastic die casting.

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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)
  • Moulds, Cores, Or Mandrels (AREA)
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EP16205457.1A 2013-07-10 2014-07-09 Plateau de coffrage pour coffrages de béton Active EP3176347B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102013107303.4A DE102013107303B4 (de) 2013-07-10 2013-07-10 Schaltafel für Betonierungsschalungen
EP14739761.6A EP3019678B1 (fr) 2013-07-10 2014-07-09 Panneau de coffrage destiné à des coffrages pour bétonnage
PCT/EP2014/064721 WO2015004188A1 (fr) 2013-07-10 2014-07-09 Panneau de coffrage destiné à des coffrages pour bétonnage

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EP14739761.6A Division EP3019678B1 (fr) 2013-07-10 2014-07-09 Panneau de coffrage destiné à des coffrages pour bétonnage

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EP3176347A1 true EP3176347A1 (fr) 2017-06-07
EP3176347B1 EP3176347B1 (fr) 2020-02-26

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EP16205457.1A Active EP3176347B1 (fr) 2013-07-10 2014-07-09 Plateau de coffrage pour coffrages de béton
EP16205468.8A Active EP3176348B1 (fr) 2013-07-10 2014-07-09 Plateau de coffrage pour coffrages de béton
EP16205463.9A Active EP3173546B1 (fr) 2013-07-10 2014-07-09 Plateau de coffrage pour coffrages béton
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