EP1947255A2 - Reinforcement for stop end panels - Google Patents
Reinforcement for stop end panels Download PDFInfo
- Publication number
- EP1947255A2 EP1947255A2 EP08405012A EP08405012A EP1947255A2 EP 1947255 A2 EP1947255 A2 EP 1947255A2 EP 08405012 A EP08405012 A EP 08405012A EP 08405012 A EP08405012 A EP 08405012A EP 1947255 A2 EP1947255 A2 EP 1947255A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- shuttering
- reinforcement
- plate
- wires
- wire mesh
- 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
Links
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B2005/322—Floor structures wholly cast in situ with or without form units or reinforcements with permanent forms for the floor edges
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B2005/324—Floor structures wholly cast in situ with or without form units or reinforcements with peripheral anchors or supports
-
- 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
- E04C5/0627—Three-dimensional reinforcements composed of a prefabricated reinforcing mat combined with reinforcing elements protruding out of the plane of the mat
Definitions
- the invention relates to a reinforcement for Schalalplatten, a process for their preparation and a Abschalungsplatte with such a reinforcement according to the preamble of claims 1, 7 and 8.
- ceiling edging is used to limit the volume to be filled with concrete.
- These can include, for example, formwork panels or wooden boards, which are removed after concreting the ceiling.
- lost ceiling edge shutters are, for example, prefabricated concrete slabs which are fastened to the slab formwork by suitable means. They combine with the liquid concrete of the ceiling and form the face of the ceiling tile. The concrete slabs provide the desired benefits in terms of quality and strength.
- foam boards instead of prefabricated concrete elements foam boards as a lost ceiling edge formwork and at the same time as insulating elements to prevent cold spots.
- Such plastic plates usually have a variety of supports with a small mutual distance be supported to prevent breaks or deformation due to the low intrinsic stability.
- lost formwork When using lost formwork as intermediate formwork can - depending on the type of shuttering panels - the insufficient stability and / or high installation costs and / or the large plate thickness adversely affect.
- large tensile and / or compressive forces usually act in the area of adjoining ceiling sections.
- Lost intermediate formworks should therefore be as dimensionally stable as possible.
- such networks must be kept because of the low intrinsic stability by a large number of stable frames and brackets or by a variety of additional bracing with small mutual distances.
- the nets are pierced by the protruding reinforcing bars. Often this results in larger cracks that need to be repaired, for example, with special adhesive tapes.
- the creation of such intermediate formwork is complex and expensive. Even small damages can lead to bursting or tearing of the nets when concreting.
- Shuttering devices typically include one or more planar shuttering plates 5 for laterally limiting the volume to be filled with concrete.
- a wall 1 made of concrete or bricks can be seen on a floor or ceiling slab 3 is to be concreted.
- a shuttering plate 5 also referred to as a plate, placed on the wall 1 and held by means of brackets 7, which are fastened with nails 9 on the slab formwork 11.
- the slab formwork 11 is held by supports 13 at the desired height.
- the shuttering plate 5 is designed as a lost element, ie the shuttering plate 5 connects after filling the liquid concrete for the ceiling plate 3 with the concrete and the surface 15 forms the end face of the finished ceiling panel 3.
- a formwork panel 5 is for example from EP-A1-0927796 known.
- FIG. 2 shows another Abschalungsplatte 5 with reinforcements 17 to increase the dimensional stability and protection against mechanical damage.
- the reinforcements 17 may include planar steel mesh with relatively large rod cross-sections or meshes of aramid or coated glass fibers.
- flat reinforcing mesh are completely embedded in a lightweight construction material such as polystyrene or another foamed mass of plastic or sand and additives.
- the reinforcement 17 is invisible and has no influence on the surface condition of the panel. In intervals of the reinforcement 17 may be provided with small distances vertically extending holes or channels 19, which allow insertion of the headband 7 from below and ensure the same.
- the shuttering plate 5 may have a smaller thickness in the lower and possibly also in the upper region, so that the stirrups 7, as in FIG FIG. 1 represented, leave the shuttering plate 5 side and can be aligned exactly horizontal.
- the reinforcement 17 is formed as a multi-folded, perforated reinforcing plate.
- This can for example be made of sheet metal by bending operations or of an extruded plastic profile and is not or only partially, ie not completely, embedded in the interior of the plate 5.
- two angled portions 23 overhang the inner surface 25 of the reinforcing plate. These angled portions 23 are with aligned holes 27 provided, through which the vertical legs of the headband 7 are inserted from below.
- aligned holes 27 In parallel to the inner plate surface ( FIG. 1 ) extending areas adjacent to the sections 23 openings 29 are mounted in the reinforcing plate. These cause a close connection with the plastic compound or the lightweight building material (matrix) on both sides of the reinforcing plate.
- shuttering panels 5 can also be designed as reusable panels which - like the ceiling formwork 11 - are treated with an anti-adhesive agent prior to concreting and are removed again after the concrete has set.
- FIG. 4 shows an example of a cross section in the region of an intermediate formwork for creating a ceiling portion, wherein the shuttering panels 5 as in the ceiling edge Abschalung in FIG. 1 are formed as lost plates.
- such intermediate formwork requires that reinforcing elements 31 (FIG. FIG. 5 ) such as reinforcing bars of the work part to be created, the intermediate formwork can penetrate, so as to connect the individual sections of the work piece, which are consecutively concreted together.
- reinforcing elements 31 such as reinforcing bars of the work part to be created
- the intermediate formwork can penetrate, so as to connect the individual sections of the work piece, which are consecutively concreted together.
- weak points or thin spots or predetermined breaking points for example in the form of recesses 33 or perforations, are formed in the shuttering panel 5.
- Shuttering slabs 5 according to the invention for lost intermediate formworks comprise hard, inelastic and incompressible or pressure-resistant materials, so that no deformations occur when external forces, such as occur in the area of abutting ceiling sections, occur.
- FIG. 5 shows a perspective view of a possible embodiment of such Abschalungsplatte 5, wherein the weak points or predetermined breaking points are formed as a pan-shaped recesses 33 on one side or both sides in the surface or the opposite main sides 34 of the Abschalungsplatte 5.
- Such shuttering plates 5 can be attached to the reinforcements 31 by means of one or both sides of the shuttering plates 5 on the reinforcements 31 or snap-on clamping or holding elements 41, as shown in FIG FIG. 5 is shown as an example.
- Such Schalalplatten 5 can be relatively thin and still stable.
- shuttering plates 5 can be made thin and stable.
- protruding reinforcing sections can be provided from the plate surface, which enable a simple and cost-effective fastening of the shuttering plates 5 by means of holding clips 7.
- the reinforcements 17 of the invention can also - analogously to FIG. 2 - Just and completely integrated into the shuttering plate 5.
- FIG. 6 shows one of the two main sides 34 of the Abschalungsplatte. 5 FIG.
- FIG. 7 shows an end view of the Abschalungsplatte 5 and FIG. 8 a detail thereof in the region of the recesses 33.
- the recesses 33 are located on both main sides 34 directly opposite. You can, for example, at regular intervals a ( Fig. 6 ) may be arranged in two parallel rows along the longitudinal sides of the shuttering plate 5. In the case of a multiple use of such shuttering plate 5, this can be due to the slightly conical edges of the recesses 33 after the Hardening the concrete relatively easily separated from the created section of the workpiece.
- the cup-shaped depressions 33 with a conical edge are formed only on one of the main sides 34.
- the wire mesh reinforcements according to the invention can be manufactured and / or adapted according to the requirements of different shuttering plates 5, as described by way of example below.
- the shuttering plates 5 can be made in large lengths 1 of several meters and usually shortened when required for example by sawing or be cut to length. Lengths in the range from about 2 m to about 4 m, for example 2.8 m, are advantageous.
- Adjacent depressions 33 in a row are offset from one another by a distance a of preferably approximately 50 mm. For oval wells 33 having a width c (FIG. FIG.
- the distance h1 of the recesses 33 from the associated edges of the shuttering panel 5 is preferably about 20mm.
- the arrangement of the recesses 33 corresponds to possible arrangements of reinforcements 31 which are intended to penetrate the intermediate shuttering.
- An integer multiple of the offset or distance a of two adjacent depressions 33 preferably corresponds to the average distance between two adjacent reinforcing bars.
- the Abschalungsplatten 5 can also be formed with bends and corners. With such elements intermediate formwork can be made with any shape.
- the shuttering plates 5 can be used with appropriate training both as shuttering elements for intermediate formwork as well as for Randabschalieux.
- the surface of the shuttering plate 5 may be formed on one and / or on both main sides 34 smooth and / or rough.
- a shuttering plate 5 as in the FIGS. 5 to 9 can be, for example, mainly or completely made of compressed wood, concrete, plastic or cardboard.
- Sheathing panels 5 of fiber concrete are preferably cast in a horizontally lying mold (not shown) with frustoconical elevations, these elevations being coated only with one thin layer 36 each having a thickness d2 of, for example, 1 mm or less to about 5 mm of the cast material.
- weak points are made of the same material as the remaining areas of the shuttering plate 5.
- the weak points are not in the interior of the plate 5, but on the outside, arranged on one of the main sides 34 flush with the surface in this embodiment.
- weak points may also be limited by perforations which are arranged along a closed line and form the edge of the weak points, wherein the holes comprise, for example, a diameter of about 1 mm to 3 mm and adjacent holes each have a diameter of 1 mm Include spacing of the same magnitude (no representation).
- Such perforations can basically be formed both in lost and in reusable Abschalplatten 5 for edge or intermediate formworks of any thickness, regardless of whether these with or without holes 19 for retaining bracket 7 (FIG. Figures 1 and 2 ) and / or are formed with not or partially from the Abschalplatte 5 outstanding reinforcement 17 or without reinforcement 17.
- perforations can also be formed in pressed, foamed or otherwise manufactured plates. For plates with holes 19 and recesses 33 and / or perforations may be provided which intersect or penetrate the holes 19. An assembly of such Abschalungsplatten 5 by means of brackets 7 or angles, which are each introduced with one of its legs in a respective bore 19, is thus easily possible.
- the thickness or thickness d1 of the Abschalplatten 5 may, for example, in the range of about 6mm to about 50mm.
- brittle material such as fiber concrete
- the shuttering plate 5 can also be made of two layers, namely a main plate 38 (FIG. FIG.
- the thickness d1 of the Abschalungsplatte 5 substantially the sum of the thicknesses d2 of the main plate 38 and d3 of the further plate 40 corresponds.
- the main plate 38 in this case comprises recesses 33a in the region of the weak points. These are unilaterally covered by the further plate 40 and thus form the recesses 33 in the Abschalungsplatte 5.
- the thin layer 36 and the thin further plate 40 can be made of the same material as the main plate 38 and glued to this example, anchored or in be connected in any other way. Alternatively, the plate 40 or the thin layer 36 may also be made of a different material or comprise other materials than the main plate 38.
- thin layers 36 for example, from woven fabrics, films, tiles, cardboard, wood materials and the like, and to anchor them before or during the curing of the main plate 38 at this.
- the thin layer 36 can for this example, angled tongues or pins 43 (FIG. Fig. 11d ) or other areas immersed in the casting material.
- thin layers 36 can also be glued, for example or connected to main panels 38 by other joining techniques.
- the weak points are formed as thin spots in this one layer.
- the cup-like weak spots may e.g. be made by truncated cone-like cones in the mold.
- thin spots can be used e.g. for pressed boards of wood or other materials by mechanical reworking of these boards, e.g. by milling, be formed.
- the material of such monolayer Abschalungsplatten 5 is in the region of the weak points identical to the base material or the matrix of the remaining areas of Abschalungsplatte 5.
- the weak points are made of the same material or the same materials as the immediately adjacent to the weak points areas of Abschalungsplatte 5th
- the two plates 38, 40 may be made of the same or alternatively of different materials.
- the material in the region of the weak points is identical to the material of the regions of the plate 40 which are directly adjacent to the weak points, or preferably the entire plate 40.
- the material composition in the region of the weak points is thus identical to that of the adjoining areas of the shuttering panel 5, at least on one of the main sides 34.
- FIGS. 11a to 11d show detailed cross sections in the region of a weak point for some possible embodiments of the shuttering plate 5.
- the shuttering plate 5 comprises only one layer, namely the main plate 38 made of fiber cement or other suitable material.
- the weak points are formed by pan-like recesses 33 as brittle thin layers 36 in the integrally cast main plate 38.
- Such depressions 33 can, as in FIG. 11a one-sided or according to FIG. 8 from both Main pages 34 ago be inserted into the Abschalungsplatte 5.
- the thin layer 36 may therefore be arranged flush with respect to the two main sides 34, for example, or in any other position.
- FIG. 11b Shuttering plate 5 shown comprises two layers, namely the main plate 38 with the recesses 33 and the thin further plate 40 which is connected to the main plate 38 and completely covers them. Those areas of the further plate 40, which cover the recesses 33a like a membrane, form the weak points of the shuttering plate 5.
- the recesses 33a can be formed with conical or vertical boundary walls.
- FIG. 11c shows a further variant of the Abschalungsplatte 5, wherein compared to FIG.
- each thin layer 36 extends beyond the edge of the respectively associated recess 33a or overlaps this edge and is in or on the region adjacent to the recess 33a the shuttering plate 5 is held or fixed.
- the thin layers 36 thus only cover part of the respective main side 34.
- Each of the thin layers 36 may comprise, for example, one or more pins 43 projecting into the main plate 38 or other holding elements for anchoring in the main plate 38.
- two main plates 38 are connected to a shuttering plate 5, wherein one of the main plates 38 includes recesses 33a and the other main plate 38 includes recesses 33 defined by thin layers 36.
- the recesses 33a and the depressions 33 lie directly opposite one another and preferably have the same or similar shape and size in the region of the thin layers 36.
- a common feature of these embodiments is that at least on one of the main sides 34 of the Abschalungsplatte 5, the material or the material composition in the weak points is the same as in the immediately adjacent to the weak points areas of Abschalungsplatte. 5
- the shuttering plate 5 comprises a reinforcement 17 made of a wire mesh 45.
- reinforcements 17 may be formed in one piece his or her several unconnected parts.
- reinforcements 17 may comprise, for example, flat or multiply curved perforated sheets, perforated sheets or grid structures.
- free spaces or holes or openings 29 are in these reinforcements ( Fig. 3 ) educated.
- Subregions of the reinforcement 17 preferably project beyond one or both of the main sides 34. They may, for example (as in FIG FIG. 3 shown) angled portions 23 with holes 27 for attaching retaining clips 7 include.
- the reinforcing structures can be connected to the shuttering plate 5, for example by gluing or other joining techniques on the surface or one of the main sides 34.
- the reinforcing structures are preferably at least partially embedded in these shuttering plates 5.
- the reinforcement 17 can be inserted or immersed in the casting compound with any desired predeterminable immersion depth. By hardening the casting compound, the reinforcement 17 is fixed to the Schalalplatte 5 connected.
- the immersion depth preferably corresponds to approximately half the thickness d1 of the plate 5.
- one or both layers or layers with a reinforcement 17 can be reinforced in an analogous manner even in the case of two-layer shuttering plates 5.
- two or more vertically aligned shapes may be formed side by side, thereby enabling simultaneous filling of multiple shapes.
- Reinforcements 17 according to the invention prove to be particularly advantageous in the form of multiply bent or deformed wire meshes 45.
- FIG. 12 shows such a wire mesh 45 with at all or at least a portion of the intersection welded together straight wires 47 and multiple bent and / or kinked or deformed transverse wires 49, which may be smooth or structured and a diameter in the order of about 0.5mm to about 6mm or corresponding cross-sectional areas in the order of about 0.2mm 2 to about 30mm 2 have.
- Longitudinal wires 47 and transverse wires 49 preferably include a right angle.
- the diameters of the wires are smaller than the smallest diameter customary in rebars, eg 4mm, 5mm or 6mm.
- transverse wires 49 with small diameters in the Size of 1.5mm to 2mm in combination with longitudinal wires 47 with slightly larger diameters of eg 2.5mm to 3mm.
- Such grids can be made by simultaneously rolling several (eg five) to many (eg fifty) transverse wires 49 and periodically welding together with longitudinal wires 47 and then forming the transverse wires 49.
- several or many longitudinal wires 47 could be handled simultaneously in an analogous manner and periodically connected to transverse wires 49.
- the welding of a longitudinal wire 47 with a plurality of transverse wires 49 can be carried out sequentially or preferably simultaneously.
- the initially planar wire mesh 45 or its transverse wires 49 are preferably reshaped such that wave-shaped regions 51 protrude from the lattice plane.
- each transverse wire 49 is concavely curved and each transitions into a linear section 55 lying in the lattice plane.
- the transverse wires 49 are connected analogously to the wave crests by longitudinal wires 47 on the upper side of the grating.
- Each two adjacent longitudinal wires 47 and each two adjacent transverse wires 49 thus frame in the lattice plane arranged grid openings 57.
- Such grid openings 57 may, for example square or rectangular and preferably have side lengths in the range of about 2cm to about 10cm.
- the longitudinal wires 47 and / or the transverse wires 49 are soft or not hardened or low in carbon. Their tensile strength is typically in the range of about 300 N / mm 2 to about 500 N / mm 2 or to about 650 N / mm 2 .
- welding may cause unwanted distortion or distortion of the grid due to stress, or stresses may hinder or render impossible deformation in the desired manner.
- the shape of the grid can be maintained.
- such gratings can be formed, for example, by means of known forming techniques in the desired manner.
- Conventional reinforcing steel bars are not suitable for the inventive grid due to the available diameter and hardness.
- wires such as those used in the manufacture of garden fences, are suitable for the production of the welded meshes according to the invention.
- the wires can be tempered eg by galvanizing and protected against oxidation. Such a remuneration serves primarily to improve the visual appearance and is not absolutely necessary.
- the wire mesh 45 may be configured in other ways. For example, those of the longitudinal wires 47 and the transverse wires 49 enclosed angle arbitrary values in the range of eg 30 ° to eg 150 ° have (no representation).
- the wire mesh 45 can be left just in accordance with the respective requirements or be converted in any way to a three-dimensional structure.
- the shape can be chosen so that thereby increases the stability or dimensional stability of the wire grid 45 and / or the wire mesh 45 are given other properties.
- one or more of a main plane outstanding portions of the wire grid 45 may be formed as a fastening means and formed, for example, for receiving retaining clips 7.
- Such receptacles are preferably designed as guides, in each of which a leg of a retaining clip 7 can be inserted and held without play or with only a small amount of play in a defined position.
- the guides can be formed, for example, alone by the arrangement of the wires of the wire grid 45 in uniform or non-uniform intervals.
- guides can also be formed by a deformation of longitudinal and / or transverse wires in more than one dimension or spatial direction (not shown).
- the peaks or peaks 53 of two adjacent transverse wires 49 are additionally deformed in the direction of the longitudinal wires 47 against each other, so claw-like or claw-like Shooting or guides are designed for insertion of retaining bracket legs.
- This is also associated with a deformation of the longitudinal wires 47 and a reduction of the original distance of the adjacent, claw-like deformed transverse wires 49.
- the opening cross sections of the headband receptacles are not circular, but for example, approximately or partially elliptical or rectangular shaped.
- retaining bar legs with rectangular cross-section eg 17mm x 10mm
- a retaining clip 7 As soon as a retaining clip 7 is inserted into the receptacle up to the desired end position, it can be moved about 90 ° into its definitive position (as well as in FIG FIG. 3 shown), where it rests against the deformed transverse wires and is held in this position.
- recesses formed in this way can also easily support bracket legs inserted with laterally outstanding retaining fingers or locking elements and locked with the shuttering plate 5 and the reinforcement 17, wedged, hooked or connected in any other way.
- the guides for receiving the headband legs may include, in addition to the wires of the wire screen 45 also other parts, such as the upper main page 34 of in FIG. 13 Shuttering plate 5 shown.
- FIG. 13 shows a shuttering panel 5 with a wireframe reinforcement seen from one of the narrow end faces.
- the transverse wires 49 project beyond the upper main side 34 of the shuttering plate 5 in the region of two peaks.
- the there connected to the transverse wires 49 longitudinal wires 47 are completely outside of the preferably integrally molded main plate 38.
- the recesses 33 which form the weak points of Abschalungsplatte 5, are arranged in the region of the grid openings 57, wherein the legs of two longitudinal wires 47 and two transverse wires 49 are framed, but not directly adjacent to these.
- the plate thickness is so low that these areas can be broken completely or partially, for example, by striking with a hammer.
- Abschalungsplatte 5 as an intermediate formwork reinforcements 31 can easily penetrate the Abschalungsplatte 5 in the area of weak points when the Abschalungsplatte 5 is pressed or beaten against the ends of the protruding reinforcing rods (or vice versa).
- the disc-like vulnerability is completely broken out of the shuttering plate 5 or penetrate the reinforcing rods - similar to a nail that is taken - the weak points, without the entire Slice out the vulnerability.
- Shuttering plates 5 may also be curved and / or comprise a plurality of sections or sections, each two adjoining sections each enclosing a fixed or - in the case of hinge-like sections - a variable angle.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Reinforcement Elements For Buildings (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
Description
Gegenstand der Erfindung ist eine Armierung für Abschalungsplatten, ein Verfahren zu deren Herstellung sowie eine Abschalungsplatte mit einer solchen Armierung gemäss dem Oberbegriff der Patentansprüche 1, 7 und 8.The invention relates to a reinforcement for Schalalplatten, a process for their preparation and a Abschalungsplatte with such a reinforcement according to the preamble of
Bei der Erstellung von Decken werden zur seitlichen Begrenzung des mit Beton zu befüllenden Volumens Deckenrandabschalungen verwendet. Diese können z.B. Schalplatten oder Bretter aus Holz umfassen, die nach dem Betonieren der Decke wieder entfernt werden.
Es ist auch bekannt, verlorene Deckenrand-Abschalplatten zu verwenden. Bei diesen Platten handelt es sich beispielsweise um vorfabrizierte Betonplatten, die mit geeigneten Mitteln an der Deckenschalung befestigt werden. Sie verbinden sich mit dem flüssigen Beton der Decke und bilden die Stirnfläche der Deckenplatte. Die Platten aus Beton erbringen die erwünschten Vorteile bezüglich Qualität und Festigkeit.
Weiter ist bekannt, anstelle von vorfabrizierten Betonelementen Schaumstoffplatten als verlorene Deckenrand-Schalung und gleichzeitig als isolierende Elemente zur Verhinderung von Kältebrücken einzusetzen. Solche Kunststoffplatten müssen in der Regel mit einer Vielzahl von Stützen mit geringem gegenseitigem Abstand abgestützt werden um Brüche oder Verformungen aufgrund der geringen Eigenstabilität zu verhindern. Entsprechend hoch sind die Materialkosten für die Haltebügel und der Zeitaufwand für die Montage. Im Weiteren sind solche Platten sehr empfindlich auf mechanische Beschädigung. Bereits ein anstossendes Werkzeug oder ein leichter Fusstritt kann die Platte derart beschädigen, dass beim Betonieren flüssiger Beton austreten kann.
Aus der
It is also known to use lost ceiling edge shutters. These plates are, for example, prefabricated concrete slabs which are fastened to the slab formwork by suitable means. They combine with the liquid concrete of the ceiling and form the face of the ceiling tile. The concrete slabs provide the desired benefits in terms of quality and strength.
It is also known to use instead of prefabricated concrete elements foam boards as a lost ceiling edge formwork and at the same time as insulating elements to prevent cold spots. Such plastic plates usually have a variety of supports with a small mutual distance be supported to prevent breaks or deformation due to the low intrinsic stability. Accordingly high are the material costs for the headband and the time required for installation. Furthermore, such plates are very sensitive to mechanical damage. Already an abutting tool or a light footstep can damage the plate so that when concreting liquid concrete can escape.
From the
Beim Erstellen grösserer zusammenhängender Betonelemente bzw. -teile wie Decken und Böden in Gebäuden oder Wände von Tunnelröhren ist es oft nicht möglich, das gesamte Element bzw. Betonbauteil oder Werkteil in einem Zug zu fertigen. Das Betonbauteil muss dann in mehreren Etappen gefertigt werden, wobei jeweils nur einzelne Teilbereiche erstellt werden. In der Regel ist es erforderlich, dass die Bewehrungen benachbarter Teilbereiche sich mindestens teilweise überlappen oder weitergeführt werden, damit die Anforderungen an die Statik des gesamten Betonbauteils erfüllt werden können. Werden herkömmliche Deckenrandabschalungen als Zwischenschalungen benutzt, müssen bei diesen auf der Baustelle Durchtrittsöffnungen für die vorstehenden Armierungseisen erstellt werden. Eine mehrfache Verwendung solcher "beschädigter" Abschalungen ist in der Regel nicht möglich. Bei der Verwendung verlorener Abschalungen als Zwischenschalungen können sich - je nach Art der Schalungsplatten - die unzureichende Stabilität und/oder der hohe Installationsaufwand und/oder die grosse Plattendicke nachteilig auswirken. Bei Decken wirken in der Regel grosse Zug- und/oder Druckkräfte im Bereich aneinander grenzender Deckenabschnitte. Verlorene Zwischenschalungen sollten deshalb möglichst formstabil sein.
Es ist im Weiteren auch bekannt, für Zwischenschalungen in Rahmen eingespannte Netze zu verwenden. Solche Netze sind in zufrieden stellender Qualität schwer herstellbar und haben oft ungenügende Dichteigenschaften. Zudem müssen solche Netze wegen der geringen Eigenstabilität durch eine grosse Anzahl stabiler Rahmen und Halterungen bzw. durch eine Vielzahl zusätzlicher Verstrebungen mit kleinen gegenseitigen Abständen gehalten werden. Bei der Montage werden die Netze von den vorstehenden Bewehrungseisen durchstochen. Oft entstehen dabei grössere Risse, die z.B. mit speziellen Klebebändern ausgebessert werden müssen. Die Erstellung derartiger Zwischenschalungen ist aufwändig und teuer. Bereits kleine Beschädigungen können beim Betonieren zum Bersten oder Ausreissen der Netze führen.When creating large contiguous concrete elements or parts such as ceilings and floors in buildings or walls of tunnel tubes, it is often not possible to manufacture the entire element or concrete component or work part in one go. The concrete component then has to be manufactured in several stages, whereby only individual partial areas are created. In general, it is necessary that the reinforcements of adjacent sub-areas overlap at least partially or be continued, so that the requirements for the statics of the entire concrete component can be met. If conventional Deckenrandabschalungen used as intermediate formwork, these must be created at the construction site passages for the above reinforcing bars. Multiple use of such "damaged" shutters is usually not possible. When using lost formwork as intermediate formwork can - depending on the type of shuttering panels - the insufficient stability and / or high installation costs and / or the large plate thickness adversely affect. In the case of ceilings, large tensile and / or compressive forces usually act in the area of adjoining ceiling sections. Lost intermediate formworks should therefore be as dimensionally stable as possible.
It is also known to use for intermediate formwork in frame clamped networks. Such nets are difficult to produce in satisfactory quality and often have insufficient sealing properties. In addition, such networks must be kept because of the low intrinsic stability by a large number of stable frames and brackets or by a variety of additional bracing with small mutual distances. During assembly, the nets are pierced by the protruding reinforcing bars. Often this results in larger cracks that need to be repaired, for example, with special adhesive tapes. The creation of such intermediate formwork is complex and expensive. Even small damages can lead to bursting or tearing of the nets when concreting.
Es ist deshalb Aufgabe der vorliegenden Erfindung, eine Armierung, welche zur Herstellung relativ stabiler, kostengünstiger, leicht zu montierender Abschalungsplatten geeignet ist, ein Verfahren zu deren Herstellung sowie derartige Abschalungsplatten zu schaffen.It is therefore an object of the present invention, a reinforcement which is suitable for producing relatively stable, inexpensive, easy-to-install Abschalungsplatten, to provide a method for their preparation and such Abschalungsplatten.
Diese Aufgabe wird gelöst durch eine Armierung, durch ein Verfahren zu deren Herstellung und durch eine Abschalungsplatte mit den Merkmalen der Patentansprüche 1, 7 und 8. Vorteilhafte Weiterbildungen sind in den Unteransprüchen definiert.This object is achieved by a reinforcement, by a method for their preparation and by a shuttering plate having the features of
Anhand einiger illustrierter Ausführungsbeispiele wird die Erfindung näher erläutert. Es zeigen
- Figur 1
- einen Querschnitt im Bereich einer Deckenrandabschalung gemäss Stand der Technik,
- Figur 2
- eine Teilansicht einer Abschalungsplatte aus einem Leichtbaustoff gemäss Stand der Technik,
Figur 3- eine weitere Abschalungsplatte mit Mitteln zum Befestigen von Haltebügeln gemäss Stand der Technik,
- Figur 4
- einen Querschnitt einer Zwischenschalung mit verlorenen Schalungselementen,
Figur 5- eine perspektivische Darstellung einer weiteren Zwischenschalung mit durch die Abschalungsplatte durchtretenden Bewehrungselementen,
Figur 6- eine Hauptseiten-Ansicht der Abschalungsplatte aus
,Figur 5 Figur 7- eine Aufsicht auf die Abschalungsplatte aus
,Figur 5 - Figur 8
- ein Detail einer einschichtigen Abschalungsplatte mit sich gegenüberliegenden Vertiefungen,
Figur 9- ein Detail einer einschichtigen Abschalungsplatte mit einseitig in eine der Hauptseiten eingelassenen Vertiefungen,
- Figur 10
- ein Detail einer zweischichtigen Abschalungsplatte,
- Figur 11a
- einen Detailquerschnitt einer ersten Abschalungsplatte,
- Figur 11b
- einen Detailquerschnitt einer weiteren Abschalungsplatte,
- Figur 11c
- einen Detailquerschnitt einer weiteren Abschalungsplatte,
- Figur 11d
- einen Detailquerschnitt einer weiteren Abschalungsplatte,
- Figur 12
- ein Armierungsgitter,
Figur 13- eine stirnseitige Ansicht Abschalungsplatte mit einem Armierungsgitter.
- FIG. 1
- a cross section in the region of a Deckenrandabschalung according to the prior art,
- FIG. 2
- a partial view of a formwork slab made of a lightweight building material according to the prior art,
- FIG. 3
- another shuttering plate with means for attaching retaining clips according to the prior art,
- FIG. 4
- a cross section of an intermediate formwork with lost formwork elements,
- FIG. 5
- a perspective view of another intermediate formwork with passing through the formwork panel reinforcing elements,
- FIG. 6
- a main page view of the Abschalungsplatte
FIG. 5 . - FIG. 7
- a view of the Abschalungsplatte
FIG. 5 . - FIG. 8
- a detail of a single-layer shuttering panel with opposing recesses,
- FIG. 9
- a detail of a single-layer shuttering plate with recesses embedded in one of the main sides on one side,
- FIG. 10
- a detail of a two-layer shuttering panel,
- FIG. 11a
- a detail cross section of a first shuttering plate,
- FIG. 11b
- a detail cross-section of another formwork panel,
- FIG. 11c
- a detail cross-section of another formwork panel,
- FIG. 11d
- a detail cross-section of another formwork panel,
- FIG. 12
- a reinforcing grid,
- FIG. 13
- an end view shuttering plate with a reinforcing grid.
Zum besseren Verständnis der Erfindung werden zuerst Abschalungen, wie sie aus dem Stand der Technik bekannt sind, kurz beschrieben. Abschalungsvorrichtungen umfassen in der Regel eine oder mehrere ebene Abschalungsplatten 5 zum seitlichen Begrenzen des mit Beton zu befüllenden Volumens.
Im in
In den parallel zur inneren Plattenoberfläche (
Im in
In parallel to the inner plate surface (
Grössere Decken oder entsprechende andere Bauteile können nicht in einem Arbeitsgang betoniert werden. Mittels Zwischenschalungen wird das von der Randschalung seitlich begrenzte Volumen in Teilbereiche aufgeteilt. Dabei kann die Zwischenschalung analog zur Randschalung als verlorene Schalung oder als wieder zu verwendende, nach dem Betonieren zu entfernende Schalung ausgebildet sein.
Im Unterschied zu Randabschalungen ist es bei solchen Zwischenschalungen erforderlich, dass Bewehrungselemente 31 (
In Verbindung mit der erfindungsgemässen Armierung 17 in Gestalt eines dünnen Drahtgitters 45 (
Dank der erfindungsgemässen Armierung 17 können Abschalungsplatten 5 dünn und stabil ausgebildet werden. Insbesondere bei dünnen Armierungsplatten 5 können aus der Plattenoberfläche herausragende Armierungsabschnitte vorgesehen sein, welche eine einfache und kostengünstige Befestigung der Abschalungsplatten 5 mittels Haltebügeln 7 ermöglichen. Die erfindungsgemässen Armierungen 17 können aber auch - analog zu
Bei einer bevorzugten, einfacher herstellbaren Variante der Abschalungsplatte 5 sind die pfannenförmigen Vertiefungen 33 mit konischem Rand nur an einer der Hauptseiten 34 ausgebildet.
Die Abschalungsplatten 5 können in grossen Baulängen 1 von mehreren Metern gefertigt und in der Regel bei Bedarf z.B. durch Sägen gekürzt bzw. abgelängt werden. Vorteilhaft erweisen sich Baulängen im Bereich von etwa 2m bis etwa 4m, beispielsweise 2.8m.
Benachbarte Vertiefungen 33 in einer Reihe sind um einen Abstand a von vorzugsweise etwa 50mm zueinander versetzt angeordnet. Bei ovalen Vertiefungen 33 mit einer Breite c (
Die Abschalungsplatte 5 kann in vergleichsweise geringen Stärken d1 im Bereich von wenigen Millimetern (z.B. d1 = 6mm) gefertigt werden. Selbstverständlich können auch Abschalungsplatten 5 mit grösseren Stärken d1 gefertigt werden (z.B. d1 = 15mm oder d1=50mm). Abschalungsplatten 5 können - entsprechend den Höhen der zu erstellenden Decken oder Werkteile - mit unterschiedlicher Höhe h0 hergestellt werden, vorzugsweise mit Höhen h0 von etwa 150mm bis etwa 1000mm. Die Höhe h2 der ovalen Vertiefungen 33 beträgt vorzugsweise etwa 45mm. Der Abstand h1 der Vertiefungen 33 von den zugehörigen Kanten der Schalungsplatte 5 beträgt vorzugsweise etwa 20mm. Bei derartigen Abschalungsplatten 5 korrespondiert die Anordnung der Vertiefungen 33 mit möglichen Anordnungen von Bewehrungen 31, welche die Zwischenschalung durchdringen soll. Ein ganzzahliges Vielfaches des Versatzes bzw. Abstandes a zweier benachbarter Vertiefungen 33 entspricht vorzugsweise dem durchschnittlichen Abstand zweier benachbarter Bewehrungseisen.
Die Abschalungsplatten 5 können auch mit Krümmungen und Ecken ausgebildet werden. Mit solchen Elementen können Zwischenschalungen mit beliebigen Formen hergestellt werden.
Die Abschalungsplatten 5 können bei entsprechender Ausbildung sowohl als Schalungselemente für Zwischenschalungen als auch für Randabschalungen benutzt werden. Die Oberfläche der Abschalungsplatte 5 kann auf einer und/oder auf beiden Hauptseiten 34 glatt und/oder rau ausgebildet sein. Oberflächen, die sich mit einem Betonteil verbinden sollen, sind vorzugsweise rau. Oberflächen, welche von einem Betonteil wieder getrennt werden sollen, oder welche später sichtbar sind, sind vorzugsweise eben und glatt. Bei jenen Abschalungsplatten 5, die durch Giessen, Schäumen oder Pressen mit einer Form hergestellt werden, kann die Oberflächenbeschaffenheit besonders einfach durch die Art der Oberfläche der Form vorgegeben werden.
Eine Abschalungsplatte 5, wie sie in den
Thanks to the
In a preferred variant of the
The
The
The
The
A shuttering
Bei den hier beschriebenen Abschalungsplatten 5 sind nur eine oder zwei wesentliche Schichten bzw. nicht mehr als zwei wesentliche Schichten erforderlich, um stabile Zonen und von Bewehrungen 31 durchstossbare Schwachstellen auszubilden.In the case of the
Bei einschichtigen Abschalungsplatten 5 sind die Schwachstellen als Dünnstellen in dieser einen Schicht ausgebildet. Bei gegossenen Abschalungsplatten 5 (z.B. aus Faserzement oder -beton) können die topfartigen Schwachstellen z.B. durch kegelstumpfähnliche Zapfen in der Gussform hergestellt werden. Alternativ können Dünnstellen z.B. bei gepressten Platten aus Holz- oder anderen Werkstoffen durch mechanisches Nachbearbeiten dieser Platten, z.B. durch Fräsen, ausgebildet werden.In the case of single-
Das Material solcher einschichtigen Abschalungsplatten 5 ist im Bereich der Schwachstellen identisch mit dem Grundmaterial bzw. der Matrix der übrigen Bereiche der Abschalungsplatte 5. Insbesondere sind die Schwachstellen aus dem gleichen Material bzw. den gleichen Materialien gefertigt wie die unmittelbar an die Schwachstellen angrenzenden Bereiche der Abschalungsplatte 5.The material of
Bei zweischichtigen Abschalungsplatten 5, die eine Hauptplatte 38 und eine weitere Platte 40 mit der dünnen Schicht 36 umfassen, können die beiden Platten 38,40 aus dem gleichen oder alternativ aus unterschiedlichen Materialien gefertigt sein. Bei der Platte 40 mit der dünnen Schicht 36 ist das Material im Bereich der Schwachstellen identisch mit dem Material der unmittelbar an die Schwachstellen angrenzenden Bereiche der Platte 40 oder vorzugsweise der gesamten Platte 40.For two-
Bei der beschriebenen Abschalungsplatte 5 ist somit zumindest auf einer der Hauptseiten 34 die Materialzusammensetzung im Bereich der Schwachstellen identisch mit jener der daran angrenzenden Bereiche der Abschalungsplatte 5.In the described
Die
Bei
Selbstverständlich könnten eine oder beide Hauptseiten 34 einer Abschalungsplatte 5 teilweise oder vollständig mit einer Schutzschicht bedeckt sein (keine Darstellung), welche die Durchstossbarkeit der Schwachstellen nicht wesentlich beeinflusst.
Die in
Bei einer weiteren Ausgestaltung, wie sie in
Die Ausnehmungen 33a und die Vertiefungen 33 liegen sich unmittelbar gegenüber und haben im Bereich der dünnen Schichten 36 vorzugsweise gleiche oder ähnliche Gestalt und Grösse.
Eine Gemeinsamkeit dieser Ausführungsformen liegt darin, dass zumindest auf einer der Hauptseiten 34 der Abschalungsplatte 5 das Material bzw. die Materialzusammensetzung im Bereich der Schwachstellen gleich ist wie in den unmittelbar an die Schwachstellen angrenzenden Bereichen der Abschalungsplatte 5.Of course, one or both
In the
In a further embodiment, as in
The
A common feature of these embodiments is that at least on one of the
Zur Erhöhung der Stabilität, insbesondere der Biegestabilität umfasst die Abschalungsplatte 5 erfindungsgemäss eine Armierung 17 aus einem Drahtgitter 45. Solche Armierungen 17 können einstückig ausgebildet sein oder mehrere nicht miteinander verbundene Teile umfassen.
Allgemein können Armierungen 17 z.B. ebene oder mehrfach gebogene Lochbleche, gelochte Platten oder Gitterstrukturen umfassen. Im Bereich der Dünnstellen bzw. Schwachstellen oder Vertiefungen 33 der Abschalungsplatte 5 sind bei diesen Armierungen 17 Freiräume oder Löcher bzw. Durchbrechungen 29 (
Die Armierungsstrukturen können je nach Art und Material der Abschalungsplatte 5 z.B. durch Kleben oder andere Fügetechniken an der Oberfläche bzw. einer der Hauptseiten 34 mit der Abschalungsplatte 5 verbunden sein. Bei gegossenen oder gepressten Abschalungsplatten 5 sind die Armierungsstrukturen vorzugsweise mindestens teilweise in diese Abschalungsplatten 5 eingelassen.In order to increase the stability, in particular the bending stability, the shuttering
In general,
Depending on the type and material of the
Bei gegossenen Abschalungsplatten kann nach dem Befüllen der Form mit der Gussmasse vor deren Aushärtung die Armierung 17 mit beliebig vorgebbarer Eintauchtiefe in die Gussmasse eingelegt bzw. eingetaucht werden. Durch das Aushärten der Gussmasse wird die Armierung 17 fest mit der Abschalungsplatte 5 verbunden. Bei einschichtigen Abschalungsplatten 5 entspricht die Eintauchtiefe vorzugsweise etwa der Hälfte der Stärke d1 der Platte 5. Selbstverständlich können in analoger Weise auch bei zweischichtigen Abschalungsplatten 5 eine oder beide Schichten bzw. Lagen mit einer Armierung 17 verstärkt werden.
Alternativ können auch zwei oder mehrere vertikal ausgerichtete Formen nebeneinander ausgebildet sein, wodurch das gleichzeitige Befüllen mehrerer Formen ermöglicht wird.
Als besonders vorteilhaft erweisen sich erfindungsgemässe Armierungen 17 in Gestalt von mehrfach gebogenen bzw. umgeformten Drahtgittern 45.
Das vorerst ebene Drahtgitter 45 bzw. dessen Querdrähte 49 werden vorzugsweise so umgeformt, dass wellenförmige Bereiche 51 aus der Gitterebene hervorragen. Die benachbarten Maxima 53 bzw. konvex gekrümmten Wellenberge nebeneinander liegender Querdrähte 49 sind jeweils durch einen aussen bzw. oben angeschweissten Längsdraht 47 miteinander verbunden. Am Fuss auf beiden Seiten der Wellenberge ist jeder Querdraht 49 konkav gekrümmt und geht je in einen linearen Abschnitt 55 über, der in der Gitterebene liegt. In den linearen Abschnitten 55 sind die Querdrähte 49 analog zu den Wellenbergen durch Längsdrähte 47 an der Gitteroberseite verbunden. Je zwei benachbarte Längsdrähte 47 und je zwei benachbarte Querdrähte 49 umrahmen somit in der Gitterebene angeordnete Gitteröffnungen 57. Solche Gitteröffnungen 57 können z.B. quadratisch oder rechteckig ausgebildet sein und vorzugsweise Seitenlängen im Bereich von etwa 2cm bis etwa 10cm aufweisen. Vorzugsweise sind die Längsdrähte 47 und/oder die Querdrähte 49 weich bzw. nicht gehärtet oder kohlestoffarm. Ihre Zugfestigkeit liegt in der Regel im Bereich von etwa 300 N/mm2 bis etwa 500 N/mm2 oder bis etwa 650 N/mm2. Bei harten oder gehärteten Drähten können durch das Schweissen aufgrund von Spannungen unerwünschte Verwindungen bzw. Verformungen des Gitters auftreten, oder Spannungen können eine Verformung in der gewünschten Art behindern oder verunmöglichen. Bei Drähten aus weichem bzw. nicht gehärtetem Material hingegen kann die Form des Gitters beibehalten werden. Insbesondere können solche Gitter z.B. mittels bekannter Umformtechniken in der gewünschten Weise geformt werden. Herkömmliche Betonstahlstäbe eignen sich aufgrund der verfügbaren Durchmesser und Härten nicht für die erfindungsgemässen Gitter. Hingegen sind Drähte, wie sie z.B. bei der Herstellung von Gartenzäunen verwendet werden, geeignet zur Herstellung der erfindungsgemässen, verschweissten Gitter. Die Drähte können z.B. durch Verzinkung vergütet und vor Oxidation geschützt sein. Eine solche Vergütung dient in erster Linie zur Verbesserung des optischen Erscheinungsbildes und ist nicht zwingend erforderlich. Selbstverständlich können die Drahtgitter 45 auch in anderer Weise ausgestaltet sein. So können z.B. die von den Längsdrähten 47 und den Querdrähten 49 eingeschlossenen Winkel beliebige Werte im Bereich von z.B. 30° bis z.B. 150° aufweisen (keine Darstellung). Das Drahtgitter 45 kann entsprechend der jeweiligen Anforderungen eben belassen oder in beliebiger Weise zu einer dreidimensionalen Struktur umgeformt werden. Insbesondere kann die Formgebung so gewählt werden, dass dadurch die Stabilität bzw. Formstabilität des Drahtgitters 45 erhöht und/oder dem Drahtgitter 45 andere Eigenschaften verliehen werden. So können beispielsweise ein oder mehrere aus einer Hauptebene hervorragende Abschnitte des Drahtgitters 45 als Befestigungsmittel ausgebildet und z.B. zum Aufnehmen von Haltebügeln 7 ausgebildet sein. Solche Aufnahmen sind vorzugsweise als Führungen ausgebildet, in welche jeweils ein Schenkel eines Haltebügels 7 eingeführt und spielfrei bzw. mit nur geringem Spiel in einer definierten Lage gehalten werden kann. Die Führungen können z.B. allein durch die Anordnung der Drähte des Drahtgitters 45 in gleichmässigen oder ungleichmässigen Abständen ausgebildet werden. Zusätzlich oder alternativ können Führungen auch durch eine Verformung von Längs- und/oder Querdrähten in mehr als einer Dimension bzw. Raumrichtung ausgebildet werden (nicht dargestellt). So können beispielsweise ausgehend vom in
Selbstverständlich können die Führungen zum Aufnehmen der Haltebügelschenkel zusätzlich zu den Drähten des Drahtgitters 45 auch weitere Teile umfassen, wie z.B die obere Hauptseite 34 der in
Alternatively, two or more vertically aligned shapes may be formed side by side, thereby enabling simultaneous filling of multiple shapes.
The initially
Of course, the guides for receiving the headband legs may include, in addition to the wires of the
Im Bereich der Schwachstellen bzw. der Vertiefungen 33 ist die Plattendicke so gering, dass diese Bereiche z.B. durch Aufschlagen mit einem Hammer vollständig oder teilweise ausgebrochen werden können. Beim Anbringen einer solchen Abschalungsplatte 5 als Zwischenschalung können Bewehrungen 31 die Abschalungsplatte 5 im Bereich der Schwachstellen mühelos durchdringen, wenn die Abschalungsplatte 5 gegen die Enden der vorstehenden Bewehrungsstangen (oder umgekehrt) gedrückt oder geschlagen wird. Je nach Art der Schwachstellen wird dann die scheibenartige Schwachstelle vollständig aus der Abschalungsplatte 5 ausgebrochen oder die Bewehrungsstangen durchdringen - ähnlich einem Nagel, der eingeschlagen wird - die Schwachstellen, ohne die gesamte Scheibe der Schwachstelle auszubrechen. Anschliessend wird die Abschalungsplatte 5 in der gewünschten Position an den Bewehrungsstangen und/oder an der Deckenschalung 11 befestigt. Mehrere Abschalungsplatten 5 können in gleicher Weise aneinander gereiht werden, sodass eine vollständige Abschalungsvorrichtung bzw. Zwischenschalung zum Betonieren eines Abschnitts des Bauteils oder Bauwerks entsteht. Abschalungsplatten 5 können auch gekrümmt sein und/oder mehrere Abschnitte oder Teilstücke umfassen, wobei je zwei aneinander angrenzende Teilstücke jeweils einen festen oder - bei scharnierartig zusammengesetzten Teilstücken - einen veränderlichen Winkel einschliessen.In the area of weak points or recesses 33, the plate thickness is so low that these areas can be broken completely or partially, for example, by striking with a hammer. When attaching
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DE20311707U1 (en) * | 2003-07-30 | 2003-10-23 | Döllen, Heinz von, 58239 Schwerte | Concrete shuttering has a shell plate at a distance from struts and exit sections that are formed in the shuttering plate |
DE20318236U1 (en) * | 2003-11-25 | 2004-02-19 | Msl Mathieu Schalungssysteme Und Lufttechnische Komponenten Gmbh | Shuttering for ceiling or edge of floor in building has side wall made of sheet metal held on uprights fastened to horizontal members to make L-shapes and horizontal strips rest on concrete beam |
GB0409216D0 (en) * | 2004-04-24 | 2004-05-26 | Metaform Ltd | Multi purpose screed rail, formwork and joint protection mechanism |
-
2008
- 2008-01-17 EP EP08405014.5A patent/EP1947257B1/en active Active
- 2008-01-17 EP EP08405012.9A patent/EP1947255B1/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0927796A1 (en) | 1997-12-30 | 1999-07-07 | System Albanese | Form panel and system |
EP1327732A1 (en) | 2001-12-24 | 2003-07-16 | System Albanese | Edge shuttering for concrete slabs |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2103752A1 (en) * | 2008-03-20 | 2009-09-23 | Fensterfabrik Albisrieden Ag | Roof |
WO2009115286A1 (en) * | 2008-03-20 | 2009-09-24 | Fensterfabrik Albisrieden Ag | Cover |
Also Published As
Publication number | Publication date |
---|---|
EP1947255A3 (en) | 2013-07-03 |
EP1947257B1 (en) | 2019-03-13 |
EP1947257A3 (en) | 2013-07-03 |
EP1947255B1 (en) | 2019-03-13 |
EP1947257A2 (en) | 2008-07-23 |
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