EP1086281A1 - Device for stiffening large-surface concrete elements, especially floors and ceilings of multistory buildings - Google Patents

Device for stiffening large-surface concrete elements, especially floors and ceilings of multistory buildings

Info

Publication number
EP1086281A1
EP1086281A1 EP99927935A EP99927935A EP1086281A1 EP 1086281 A1 EP1086281 A1 EP 1086281A1 EP 99927935 A EP99927935 A EP 99927935A EP 99927935 A EP99927935 A EP 99927935A EP 1086281 A1 EP1086281 A1 EP 1086281A1
Authority
EP
European Patent Office
Prior art keywords
hollow bodies
concrete
reinforcement
elements
hollow body
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
EP99927935A
Other languages
German (de)
French (fr)
Other versions
EP1086281B1 (en
Inventor
Heinz Oster
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gebr Schoeller Beteiligungsverwaltungsgesells
Schoeller Industries GmbH and Co KG
Original Assignee
Schoeller Plast Industries GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schoeller Plast Industries GmbH filed Critical Schoeller Plast Industries GmbH
Publication of EP1086281A1 publication Critical patent/EP1086281A1/en
Application granted granted Critical
Publication of EP1086281B1 publication Critical patent/EP1086281B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/326—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling elements
    • E04B5/328—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling elements the filling elements being spherical

Definitions

  • He Indation relates to a device for stiffening large-area concrete elements in which hollow bodies are embedded for the purpose of concrete displacement. These concrete elements are mainly used for the production of floors and ceilings in concrete structures.
  • the object of the invention is to provide a device for producing rigid concrete elements, in particular large-area concrete elements suitable for the formation of ceilings and floors, which allow fast, simple and reliable creation of the concrete elements or ceilings and floors.
  • the handling is to be made easier, and the main aim is to move the manufacture of the device away from the actual installation location, so that the device can be created as a prefabricated intermediate or semi-finished product, can be stored temporarily and can be used appropriately on site if required.
  • the invention provides as a solution that the hollow bodies arranged above or below the reinforcement grid are directly connected to the reinforcement grid by connecting members, so that they are secured against buoyancy.
  • a reinforcement mat equipped in this way is then embedded in concrete.
  • the hollow bodies are connected to the reinforcement mat embedded in the concrete, for example by attaching them, by means of clamping hooks, by means of a clamp or the like.
  • a further reinforcement grid which is fastened via connecting rods either to the surface of the concrete shell, for example by gluing, or is partially cast into the concrete shell.
  • the concrete shell has a thickness of 4-7 cm, in particular 5-6 cm, and can be used as lost formwork when creating floors or ceilings.
  • the predominantly spherical hollow bodies can be provided with flattened sides.
  • reinforcing ribs in various embodiments can also be provided on the hollow bodies.
  • the hollow bodies can be assembled from hollow body halves by means of simple and stable snap connections or adhesive bonds in order to improve economy.
  • FIG. 1-3 schematic sectional views through a semi-finished one
  • FIG. 4 shows a schematic view of elements of the device in an exploded view
  • FIG. 5 shows a top view of the embodiment according to FIG. 4
  • FIG. 6 shows a side view of the embodiment according to FIG. 4, likewise in FIG
  • Partial representation 7 is a side view showing the fastening of a hollow body to a steel reinforcement
  • FIG. 8 is the front and rear view of the fastening from FIG. 7
  • FIG. 9 is a sectional view of the fastening of a hollow body to a
  • Fig 10 shows a cross section through the attachment of a hollow body to the
  • FIG. 11 is a sectional view from the side of two adjacent hollow bodies with mutual connection
  • FIG. 12 is a plan view of a connection of adjacent hollow bodies to a hollow body mat.
  • Fig. 1 shows a semi-finished product for stiffening large-area concrete elements, which is formed from a flat concrete shell 1 with a reinforcement grid 2 of conventional construction embedded therein, that is to say from longer and transverse bars as well as hollow body elements 3 arranged thereon in a regular distribution, which here are represented as spheres.
  • the balls 3 are arranged on the reinforcement grid 2, and in accordance with the exemplary embodiment shown they partially reach through the meshes of the grid 2 located between the grid bars. This arrangement, which takes place in a mold, is then formed by pouring concrete into the semi-finished product, so that the reinforcement grid 2 with the hollow bodies 3 is embedded in the concrete shell 1.
  • the hollow bodies 3 are secured against buoyancy. This can be conveniently done by direct connection of the hollow body 3 with the reinforcement grid 2, for example by clipping or by connecting connec tion members. In an alternative embodiment, however, the hollow bodies 3 can be held during the pouring by superimposing a surface structure, for example by arranging a retaining grid above the hollow body elements 3.
  • This semi-finished product which is manufactured in a factory, can then be transported to the construction site, stored there and then positioned by means of a crane of the building are implemented, the concrete shell 1 serving as a kind of lost formwork for the formation of the floor or the ceiling of the multi-storey building.
  • struts are placed below to form a ceiling, which hold the concrete shell 1, whereupon concrete is then applied from above to form the ceiling until the hollow bodies 3 and, if appropriate, further reinforcement grids are embedded in total in the concrete ceiling.
  • the semifinished product is supplemented to the extent that a further reinforcement grid 4 is placed on the hollow body elements 3 and fastened to the surface of the concrete shell 1 by connecting members 5.
  • the connecting links are formed by rods, which are provided at the bottom with a rail or bar 6, via which the rods 5 are connected to the surface 7 of the concrete shell 1, for example by an adhesive bond.
  • This prefabricated semifinished product according to FIG. 2 can also be delivered from the factory to the construction site, stored there and, if necessary, implemented by crane to create the structure, again the concrete shell 1 serving as lost formwork and concrete being applied to the hollow body elements 3 from above .
  • the hollow body elements 3, the bars 5 and the additional reinforcement grid 4 are then completely embedded in the floor ceiling or the floor in the finished ceiling.
  • the semifinished product is formed by first arranging the reinforcement mesh 2 in a form, then placing the hollow body elements 3 in mesh, finally placing another reinforcement mesh 4 and then the two reinforcement mesh 4 by connecting links 5, which in turn are formed by rods, are connected to each other in a cage-like manner, so that the hollow body elements 3 are caught within the cage formed by the reinforcement grids 2 and 4. Thereafter, concrete is poured into the mold to form the concrete shell 1, in which the lower reinforcement mesh 2 is entirely, the hollow body elements 3 as well as the connecting rods or connecting brackets 5 only partially and the upper one Reinforcement grid 4 is not embedded.
  • This semi-finished product can then also be brought to the construction site and implemented by crane or manually.
  • pockets, grooves or other recesses or projections and the like can be formed in the hollow body elements 3, so that there is a positive connection with the concrete of the concrete shell 1.
  • Corresponding pockets are only shown by way of example in Fig. 1 on the left ball 3, here the pockets 8 are arranged selectively over the circumference, but alternatively can also be formed by a circumferential constriction or the like, as shown in Fig. 2 on the left with the Reference numeral 9 indicated.
  • Fig. 4 shows an alternative embodiment in which the hollow body elements 3 are connected to a grid-like steel reinforcement.
  • the hollow body elements then firmly connected to the reinforcement grid can then be embedded in the floor slab when it is formed.
  • the hollow bodies 3 are placed on a perforated plate 27 which, according to the intended positions of the hollow bodies 3, has depressions 31 which are matched to the shape of the hollow bodies.
  • the shaped plate 27, which has a multiplicity of depressions 31 in the desired arrangement, serves to determine the exact position of the hollow body 3 for the subsequent steps of forming a floor.
  • a steel reinforcement 28, which is advantageously designed in the usual form as a grid, is placed on the hollow body 3 located in the shaped plate 27, so that the hollow body 3 can be connected to the steel reinforcement 28.
  • the hollow bodies 3 can be fastened to the steel reinforcement 28 in a wide variety of ways.
  • 3 connecting elements 32 can be provided on the hollow bodies, which are connected directly to the lattice bars of the steel reinforcement 28.
  • clamping brackets 30, for example made of profiled steel wire is also conceivable.
  • additional fixing rods 29, for example in the form of plastic tubes can be used, which are fastened together with the hollow bodies 3 to the lattice bars 33 of the steel reinforcement 28 and thereby the position of the hollow bodies 3 on the steel reinforcement 28. fix.
  • a first concrete layer can now be poured on, so that a ceiling component with concrete reinforcement is produced as a semifinished product, which can be pre-produced in substantial dimensions.
  • the semi-finished product is then installed in such a way that the concrete layer at the top, which contains the steel reinforcement and some of the hollow bodies attached to it, is turned downwards on supports, without the need for complete formwork, and then the missing upper part of the Floor ceiling is poured out at the construction site.
  • the hollow bodies for example with the aid of the fixing rods 29 and the connecting elements 32 or clamping brackets 30, without steel reinforcement 28, so that only a lattice arrangement of the hollow bodies 3 is produced as a semi-finished product, which is then conventional Manufacturing technology of concrete floor slabs by means of formwork and pouring with concrete can be used.
  • the steel reinforcement 28 of such a floor slab is then installed separately from the hollow body arrangement in the floor slab.
  • FIG. 5 and 6 show two views of the hollow body arrangement on a lattice-like steel reinforcement 28.
  • FIG. 5 shows a section of a plan view of the hollow bodies 3 located in the perforated plate 27, which are fastened to the steel reinforcement 28 placed thereon.
  • Another is Attachment possibility of the hollow body 3 shown on the steel reinforcement 28.
  • a simple way to attach the hollow body 3 to the steel reinforcement 28 is that a steel bracket 34 with barbs 35 is attached to the hollow body 3 so that the bracket 36 of the steel bracket 34, the lattice bar 33 of the steel reinforcement 28 comprises and the barbs 35 penetrate into the hollow body. Since the barbs 35 prevent the clip 34 from detaching from the hollow body 3, this provides a firm and secure connection.
  • FIG. 6 shows the side view of a hollow body arrangement on a steel reinforcement 28, as can be installed in a concrete ceiling in the lower region of the floor ceiling when only one steel reinforcement is used.
  • a second steel reinforcement can be attached to the top in a similar manner.
  • FIGS. 7 to 10 show details of the connection of hollow bodies 1 to the steel reinforcement 28. While the alternative from brackets 34 with barbs 35 already described is shown in FIG. 9, FIGS. 7, 8 and 10 show a further embodiment of a connecting element 32.
  • fastening elements 39 and 40 are provided on the hollow body 3, which are via a bracket 38 can be connected.
  • the bracket 38 is pivotally articulated on the fastening element 40 at one end and is fastened at its other end, for example with a rivet 37, to the opposite fastening element 39.
  • the fastening elements 39, 40 and the bracket 38 can preferably be formed in one piece with the hollow body 3 or a hollow body half.
  • the hollow bodies are expediently constructed in each case from a plurality, in particular two, sub-elements and are produced, for example, by injection molding.
  • the bracket which can, however, be made of any material, but is preferably elastic for better bracing, can of course be articulated in any other known manner.
  • FIGS. 11 and 12 show how a connection between the hollow bodies 3 can be established by tabs 42 attached to the hollow bodies 3.
  • the tabs 42 are articulated via a hinge element 44, which can be designed, for example, as a film hinge, to the hollow bodies 3, and preferably to a flange 12 of the hollow body 3, so that they can be folded in the direction of an adjacent hollow body.
  • a hinge element 44 which can be designed, for example, as a film hinge, to the hollow bodies 3, and preferably to a flange 12 of the hollow body 3, so that they can be folded in the direction of an adjacent hollow body.
  • locking openings 43 are correspondingly provided on the flange, into which the locking hooks 44 fastened to the tabs 42 can snap in order to achieve a firm connection between the hollow bodies 3.
  • the latching hook 45 fastened to the tab 42 is preferably designed as a snap spring element in which the part forming the barb is designed to be elastically resilient in order to enable the connection to be loosened if necessary.
  • latching elements in the manner of latching hooks which protrude outwards or tangeh- tial or circumferential recesses can be provided in the manner of constrictions, which enable the hollow body elements to be clipped on or anchored to the reinforcement mesh for the purpose of attaching the hollow body.
  • additional aids for the connection can be avoided, since the latching elements can be formed in one piece on the hollow body elements if necessary.
  • the latching elements can also be formed separately on the hollow bodies, for example by providing hollow body openings into which the latching elements are pressed in a plug-like manner.
  • a clamp-like design of the ends of the locking elements is also suitable for connecting the locking elements to the reinforcement grid.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

The invention relates to a device for stiffening large-surface concrete elements, especially floors and ceilings of concrete buildings, or a device provided as a semi-finished product for producing stiffened concrete elements having hollow bodies (3) and reinforcement meshes which are embedded in the concrete elements. According to the invention, either the hollow bodies (3) which are arranged above or below the reinforcement mesh (2, 28) are directly bound to the reinforcement mesh by connecting elements (5) such that they resist vertical force, or the device comprises a reinforcement mesh (2, 28) with hollow bodies (3) arranged thereon. In this case, the reinforcement mesh (2, 28) is completely embedded in an even concrete shell (1) in which the hollow bodies (3) are partially embedded.

Description

Vorrichtung zur Versteifung von großflächigen Betonelementen, insbesondere von Böden und Decken von mehrgeschossigen Gebäuden Device for stiffening large-area concrete elements, in particular floors and ceilings of multi-storey buildings
Die Er indung betrifft eine Vorrichtung zur Versteifung von großflächigen Betonelementen, in denen Hohlkörper zum Zwecke der Betonverdrängung eingebettet sind. Diese Betonelemente werden vornehmlich für die Herstellung von Böden und Decken von Betonbauwerken verwendet.He Indation relates to a device for stiffening large-area concrete elements in which hollow bodies are embedded for the purpose of concrete displacement. These concrete elements are mainly used for the production of floors and ceilings in concrete structures.
Bei der Herstellung von insbesondere Betondecken von mehrgeschossigen Gebäuden ist es bekannt, Hohlkörper in den Beton der Betondecke einzubetten, wobei je Betondecke eine Vielzahl von untereinander gleichen, in Längs- und Querreihen nebeneinander angeordneten Hohlkörpern verwendet wird. Hierbei ist es bekannt, die Hohlkörper zwischen käfigartig angeordneten Bewehrungsgittern einzufassen, wobei die Bewehrungsgitter mittels Verbindungsstäbe auf Abstand zueinander gehalten sind. Da die Hohlkörper innerhalb des durch die Bewehrungsgitter gebildeten Käfigs gefangen sind, können die Hohlkörper beim Zugießen von Beton nicht infolge von Auftriebskräften aus der Betondecke herausgedrückt werden, wobei der gesamte Käfig gegen Auftrieb gesichert werden muß. Diese Bauweise der Erstellung von Betondecken mit Hohlkörpern vermindert nicht nur den Materialaufwand und führt damit zu Kosteneinsparungen bei der Herstellung solcher Gebäude, sondern hat auch eine leichtgewichtigere Ausbildung der Betondecken zur Folge, wodurch sich im Ergebnis z. B. höhere Bauwerke erstellen lassen.In the production of, in particular, concrete ceilings of multi-storey buildings, it is known to embed hollow bodies in the concrete of the concrete ceiling, a large number of hollow bodies being used that are identical to one another and arranged next to one another in longitudinal and transverse rows. It is known here to enclose the hollow bodies between cage-like reinforcement grids, the reinforcement grids being kept at a distance from one another by means of connecting rods. Since the hollow bodies are trapped within the cage formed by the reinforcement grid, the hollow bodies cannot be pushed out of the concrete surface due to buoyancy forces when pouring concrete, the entire cage being secured against buoyancy must become. This design of the creation of concrete ceilings with hollow bodies not only reduces the cost of materials and thus leads to cost savings in the manufacture of such buildings, but also has a lighter design of the concrete ceilings, resulting in z. B. build higher structures.
Problematisch sind die bekannten Systeme jedoch bezüglich Montage, Transport und Lagerung zu und an der Baustelle, so daß insbesondere mit Rücksicht auf eine schnelle und einfache Erstellung der Decken Verbesserungen anzustreben sind.However, the known systems are problematic with regard to assembly, transport and storage to and at the construction site, so that improvements are to be sought, in particular with a view to the rapid and simple creation of the ceilings.
Aufgabe der Erfindung ist es, eine Vorrichtung zur Herstellung steifer Betonelemente, insbesondere großflächiger und für die Bildung von Decken und Böden geeigneter Betonelemente zu schaffen, die eine schnelle, einfache und zuverlässige Erstellung der Beton elemente bzw. Decken und Böden erlauben. Insgesamt soll das Handling erleichtert werden, wobei es vor allem auch angestrebt ist, die Herstellung der Vorrichtung vom eigentlichen Einbauort wegzuverlagern, so daß die Vorrichtung sozusagen als vorgefertigtes Zwischenprodukt bzw. Halbzeug erstellt, zwischengelagert und geeignet bei Bedarf vor Ort verwendet werden kann.The object of the invention is to provide a device for producing rigid concrete elements, in particular large-area concrete elements suitable for the formation of ceilings and floors, which allow fast, simple and reliable creation of the concrete elements or ceilings and floors. Overall, the handling is to be made easier, and the main aim is to move the manufacture of the device away from the actual installation location, so that the device can be created as a prefabricated intermediate or semi-finished product, can be stored temporarily and can be used appropriately on site if required.
Hierzu sieht die Erfindung als Lösung vor, daß die oberhalb oder unterhalb des Bewehrungsgitters angeordneten Hohlkörper mit dem Bewehrungsgitter unmittelbar durch Verbindungsglieder angebunden sind, so daß sie gegen Auftrieb gesichert sind. Eine dergestalt gerüstete Bewehrungsmatte wird dann in Beton eingebettet. Alternativ ist auch eine Bildung einer Hohlkörpermatte zweckmäßig, bei der die Hohlkörper entweder unmittelbar oder über Verbindungsglieder untereinander zu einem flächigen Gebilde gekoppelt sind, welches als solches in den Beton eingebettet werden kann bzw. das nach Anordnung in einer Form mit Beton zugeschüttet werden kann. Besonders zweckmäßig ist die Herrichtung der Vorrichtung als Halbzeug, wozu eine Bewehrungsmatte mit den Hohlkörpern in einer Betonschale eingebettet wird, wobei die Hohlkörper zumindest teilweise in der Betonschale fixiert sind. Hierbei ist es zweckmäßig, wenn die Hohlkörper an die im Beton eingebettete Bewehrungsmatte angebunden sind, etwa durch AncHpsen, durch Klemmhaken, durch Spannbügel oder dergleichen. In einer weiteren Ausführungsform ist es zweckmäßig, ein weiteres Bewehrungsgitter zu verwenden, welches über Verbindungsstäbe entweder gegenüber der Oberfläche der Betonschale befestigt ist, etwa durch Verkleben, oder in die Betonschale teilweise eingegossen ist. In einer praktischen Ausführungsform verfügt die Betonschale über eine Dicke von 4 - 7 cm, insbesondere 5 - 6 cm und kann als verlorene Schalung bei der Erstellung von Böden oder Decken verwendet werden.To this end, the invention provides as a solution that the hollow bodies arranged above or below the reinforcement grid are directly connected to the reinforcement grid by connecting members, so that they are secured against buoyancy. A reinforcement mat equipped in this way is then embedded in concrete. Alternatively, it is also expedient to form a hollow body mat in which the hollow bodies are coupled to one another either directly or via connecting links to form a flat structure, which as such can be embedded in the concrete or which can be filled in with concrete in a mold. It is particularly expedient to prepare the device as a semi-finished product, including one Reinforcement mat with the hollow bodies is embedded in a concrete shell, the hollow bodies being at least partially fixed in the concrete shell. It is expedient here if the hollow bodies are connected to the reinforcement mat embedded in the concrete, for example by attaching them, by means of clamping hooks, by means of a clamp or the like. In a further embodiment, it is expedient to use a further reinforcement grid, which is fastened via connecting rods either to the surface of the concrete shell, for example by gluing, or is partially cast into the concrete shell. In a practical embodiment, the concrete shell has a thickness of 4-7 cm, in particular 5-6 cm, and can be used as lost formwork when creating floors or ceilings.
Zur Minimierung des Betonverbrauchs bzw. zur Verbesserung der Handhabbarkeit können erfindungsgemäß die vornehmlich kugelförmigen Hohlkörper mit abgeflachten Seiten versehen werden. Zur Verbesserung der Beulfestigkeit und Biegfestigkeit können darüber hinaus an den Hohlkörpern Verstärkungsripppen in unterschiedlichen Ausführungsformen vorgesehen sein. Außerdem können die Hohlkörper zur Verbesserung der Wirtschaftlichkeit über einfache und stabile Schnappverbindungen oder Klebeverbund aus Hohl- körperhälften zusammengesetzt werden.To minimize the consumption of concrete or to improve the manageability, the predominantly spherical hollow bodies can be provided with flattened sides. In order to improve the buckling resistance and bending strength, reinforcing ribs in various embodiments can also be provided on the hollow bodies. In addition, the hollow bodies can be assembled from hollow body halves by means of simple and stable snap connections or adhesive bonds in order to improve economy.
Nachfolgend werden Ausführungsbeispiele der Erfindung anhand der Zeichnung beschrieben. Darin zeigen:Exemplary embodiments of the invention are described below with reference to the drawing. In it show:
Fig. 1 - 3 schematische Schnittansichten durch eine als Halbzeug gerüsteteFig. 1-3 schematic sectional views through a semi-finished one
Vorrichtung, Fig.4 eine schematische Ansicht von Elementen der Vorrichtung in aufgelöster Darstellung, Fig. 5 eine Draufsicht der Ausführungsform nach Fig. 4, Fig. 6 eine Seitenansicht der Ausführungsform nach Fig. 4, gleichfalls in4 shows a schematic view of elements of the device in an exploded view, FIG. 5 shows a top view of the embodiment according to FIG. 4, FIG. 6 shows a side view of the embodiment according to FIG. 4, likewise in FIG
Teildarstellung, Fig. 7 eine Seitenansicht zur Darstellung der Befestigung eines Hohlkörpers an einer Stahlbewehrungung, Fig. 8 die Vorder- bzw. Rückansicht der Befestigung aus Fig. 7 Fig. 9 eine Schnittansicht der Befestigung eines Hohlkörpers an einerPartial representation, 7 is a side view showing the fastening of a hollow body to a steel reinforcement, FIG. 8 is the front and rear view of the fastening from FIG. 7, FIG. 9 is a sectional view of the fastening of a hollow body to a
Stahlbewehrung, Fig 10 einen Querschnitt durch die Befestigung eines Hohlkörpers an derSteel reinforcement, Fig 10 shows a cross section through the attachment of a hollow body to the
Stahlbewehrung nach Fig. 8, Fig. 11 eine Schnittansicht von der Seite von zwei benachbarten Hohlkörpern bei gegenseitiger Verbindung sowie Fig. 12 eine Draufsicht auf eine Verbindung benachbarter Hohlkörper zu einer Hohlkörpermatte.Steel reinforcement according to FIG. 8, FIG. 11 is a sectional view from the side of two adjacent hollow bodies with mutual connection, and FIG. 12 is a plan view of a connection of adjacent hollow bodies to a hollow body mat.
Fig. 1 zeigt ein Halbzeug zur Versteifung von großflächigen Betonelementen, welches gebildet ist aus einer ebenen Betonschale 1 mit einem darin eingebetteten Bewehrungsgitter 2 konventioneller Bauart, also aus länger und quer verlaufenden Stäben sowie darauf vornehmlich in regelmäßiger Verteilung angeordneter Hohlkörper-Elemente 3, die hier als Kugeln dargestellt sind. Zur Herstellung des Halbzeugs werden die Kugeln 3 auf dem Bewehrungsgitter 2 angeordnet, wobei sie entsprechend des dargestellten Ausführungsbeispiels teilweise durch die zwischen die Gitterstäbe befindlichen Maschen des Gitters 2 greifen. Diese in einer Form erfolgende Anordnung wird dann durch Zugießen von Beton zum Halbzeug gebildet, so daß in der Betonschale 1 das Bewehrungsgitter 2 mit den Holhlkörpern 3 eingebettet ist. Während des Eingießens von Beton in die zeichnerisch nicht dargestellte Form werden die Hohlkörper 3 gegen Auftrieb gesichert. Dies kann in zweckmäßiger Weise durch unmittelbare Verbindung der Hohlkörper 3 mit dem Bewehrungsgitter 2, etwa durch Aufklipsen oder durch Anbinden von Verbin dungsgliedern erfolgen. In einer alternativen Ausfuhrungsform können jedoch währen des Eingießens die Hohlkörper 3 durch Auflagerung einer Flächenstruktur gehalten werden, etwa durch Anordnen eines Haltegitters oberhalb der Hohlkörper-Elemente 3.Fig. 1 shows a semi-finished product for stiffening large-area concrete elements, which is formed from a flat concrete shell 1 with a reinforcement grid 2 of conventional construction embedded therein, that is to say from longer and transverse bars as well as hollow body elements 3 arranged thereon in a regular distribution, which here are represented as spheres. To produce the semifinished product, the balls 3 are arranged on the reinforcement grid 2, and in accordance with the exemplary embodiment shown they partially reach through the meshes of the grid 2 located between the grid bars. This arrangement, which takes place in a mold, is then formed by pouring concrete into the semi-finished product, so that the reinforcement grid 2 with the hollow bodies 3 is embedded in the concrete shell 1. During the pouring of concrete into the shape, not shown in the drawing, the hollow bodies 3 are secured against buoyancy. This can be conveniently done by direct connection of the hollow body 3 with the reinforcement grid 2, for example by clipping or by connecting connec tion members. In an alternative embodiment, however, the hollow bodies 3 can be held during the pouring by superimposing a surface structure, for example by arranging a retaining grid above the hollow body elements 3.
Dieses Halbzeug, welches in einem Werk hergestellt wird, kann dann zur Baustelle transportiert, dort gelagert und dann mittels eines Krans zur Stellung des Bauwerks umgesetzt werden, wobei die Betonschale 1 sozusagen als verlorene Schalung für die Ausbildung des Fußbodens bzw. der Decke des mehrgeschossigen Gebäudes dient. Hierzu werden zur Bildung einer Decke Streben untergesetzt, die die Betonschale 1 halten, worauf dann zur Ausbildung der Decke von oben Beton aufgebracht wird, bis die Hohlkörper 3 und ggf. weitere Bewehrungsgitter insgesamt in der Betondecke eingebettet sind.This semi-finished product, which is manufactured in a factory, can then be transported to the construction site, stored there and then positioned by means of a crane of the building are implemented, the concrete shell 1 serving as a kind of lost formwork for the formation of the floor or the ceiling of the multi-storey building. For this purpose, struts are placed below to form a ceiling, which hold the concrete shell 1, whereupon concrete is then applied from above to form the ceiling until the hollow bodies 3 and, if appropriate, further reinforcement grids are embedded in total in the concrete ceiling.
In der Ausführungsform nach Fig. 2 ist das Halbzeug insofern ergänzt, als ein weiteres Bewehrungsgitter 4 auf die Hohlkörperelemente 3 aufgelegt und durch Verbindungsglieder 5 an der Oberfläche der Betonschale 1 befestigt sind. Im dargestellten Ausführungsbeispiel sind die Verbindungsglieder durch Stäbe gebildet, die unten mit einer Schiene oder Leiste 6 versehen sind, über die die Stäbe 5 mit der Oberfläche 7 der Betonschale 1 verbunden sind, etwa durch einen Klebeverbund. Dieses entsprechend Fig. 2 vorgefertigte Halbzeug kann gleichfalls vom Werk an die Baustelle geliefert, dort gelagert und bei Bedarf zur Erstellung des Bauwerkes kranweise umgesetzt werden, wobei wiederum die Betonschale 1 als verlorene Schalung dient und Beton von oben auf die Hohlkörper-Elemente 3 aufgebracht wird. In der fertiggestellten Decke sind dann die Hohlkörper-Elemente 3, die Stäbe 5 und das zusätzliche Bewehrungsgitter 4 zur Gänze in der Geschoßdecke bzw. dem Boden eingebettet.In the embodiment according to FIG. 2, the semifinished product is supplemented to the extent that a further reinforcement grid 4 is placed on the hollow body elements 3 and fastened to the surface of the concrete shell 1 by connecting members 5. In the illustrated embodiment, the connecting links are formed by rods, which are provided at the bottom with a rail or bar 6, via which the rods 5 are connected to the surface 7 of the concrete shell 1, for example by an adhesive bond. This prefabricated semifinished product according to FIG. 2 can also be delivered from the factory to the construction site, stored there and, if necessary, implemented by crane to create the structure, again the concrete shell 1 serving as lost formwork and concrete being applied to the hollow body elements 3 from above . The hollow body elements 3, the bars 5 and the additional reinforcement grid 4 are then completely embedded in the floor ceiling or the floor in the finished ceiling.
Bei der Ausführungsforrn nach Fig. 3 wird das Halbzeug dadurch gebildet, daß zuerst in einer Form das Bewehrungsgitter 2 angeordnet, dann die Hohlkörper- Elemente 3 maschenweise aufgelegt, schließlich ein weiteres Bewehrungsgitter 4 aufgesetzt und danach die beiden Bewehrunsgitter 4 durch Verbindungsglieder 5, die wiederum durch Stäbe gebildet sind, miteinander käfigartig verbunden werden, so daß die Hohlkörper-Elemente 3 innerhalb des durch die Bewehrungsgitter 2 und 4 gebildeten Käfigs aufgefangen sind. Danach wird in die Form Beton zugegossen, um die Betonschale 1 zu bilden, in der das untere Bewehrungsgitter 2 zur Gänze, die Hohlkörper-Elemente 3 ebenso wie die Verbindimgsstäbe bzw. Verbindungsklammern 5 nur teilweise und das obere Bewehrungsgitter 4 nicht eingebettet ist. Auch dieses Halbzeug kann dann zur Baustelle verbracht und kranweise oder manuell umgesetzt werden.3, the semifinished product is formed by first arranging the reinforcement mesh 2 in a form, then placing the hollow body elements 3 in mesh, finally placing another reinforcement mesh 4 and then the two reinforcement mesh 4 by connecting links 5, which in turn are formed by rods, are connected to each other in a cage-like manner, so that the hollow body elements 3 are caught within the cage formed by the reinforcement grids 2 and 4. Thereafter, concrete is poured into the mold to form the concrete shell 1, in which the lower reinforcement mesh 2 is entirely, the hollow body elements 3 as well as the connecting rods or connecting brackets 5 only partially and the upper one Reinforcement grid 4 is not embedded. This semi-finished product can then also be brought to the construction site and implemented by crane or manually.
Zur Verbeserung der Einbettung der Hohlkörperelemente 3 innerhalb der Betonschale 1 des Halbzeugs können Taschen, Rillen oder sonstige Ausnehmungen oder auch Vorsprünge und dergl. in den Hohlkörper-Elementen 3 ausgebildet sein, so daß sich ein formschlüssiger Verbund mit dem Beton der Betonschale 1 ergibt. Entsprechende Taschen sind nur beispielshalber in Fig. 1 an der linken Kugel 3 dargestellt, wobei hier die Taschen 8 punktuell über den Umfang angeordnet sind, jedoch alternativ auch durch eine umlaufende Einschnürung gebildet sein können oder dgl., wie in Fig. 2 links mit dem Bezugszeichen 9 angedeutet.To improve the embedding of the hollow body elements 3 within the concrete shell 1 of the semifinished product, pockets, grooves or other recesses or projections and the like can be formed in the hollow body elements 3, so that there is a positive connection with the concrete of the concrete shell 1. Corresponding pockets are only shown by way of example in Fig. 1 on the left ball 3, here the pockets 8 are arranged selectively over the circumference, but alternatively can also be formed by a circumferential constriction or the like, as shown in Fig. 2 on the left with the Reference numeral 9 indicated.
Fig. 4 zeigt eine alternative Ausführungsform, bei der die Hohlkörperelemente 3 an einer gitterartigen Stahlbewehrung angebunden werden. Die dergestalt dann fest mit dem Bewehrungsgitter verbundenen Hohlkörper-Elemente können dann bei der Bildung einer Geschoßdecke in diese eingebettet werden.Fig. 4 shows an alternative embodiment in which the hollow body elements 3 are connected to a grid-like steel reinforcement. The hollow body elements then firmly connected to the reinforcement grid can then be embedded in the floor slab when it is formed.
Hierzu werden die Hohlkörper 3 auf eine Lochplatte 27 gelegt, die entsprechend der vorgesehenen Positionen der Hohlkörper 3 Vertiefungen 31 aufweist, die auf die Form der Hohlkörper abgestimmt sind. Die Formplatte 27, die eine Vielzahl von Vertiefungen 31 in der gewünschten Anordnung besitzt, dient zur Festlegung der genauen Position der Hohlkörper 3 für die nachfolgenden Schritte der Geschoßdeckenbildung. Auf die in der Formplatte 27 befindlichen Hohlkörper 3 wird eine Stahlbewehrung 28, die vorteilhafterweise in der üblichen Form als Gitter ausgeführt ist, aufgelegt, so daß die Hohlkörper 3 mit der Stahlbewehrung 28 verbunden werden können. Die Befestigung der Hohlkörper 3 an die Stahlbewehrung 28 kann dabei in unterschiedlichster Art und Weise erfolgen. Beispielsweise können an den Hohlkörpern 3 Verbindungselemente 32 vorgesehen sein, die direkt mit den Gitterstäben der Stahlbewehrung 28 verbunden werden. Zur Verbindung der Hohlkörper 3 an die Gitterstäbe 33 der Stahlbewehrung 28 ist auch die Verwendung von Spannbügeln 30, beispielsweise aus profiliertem Stahldraht, denkbar. Zur weiteren Fixierung der Hohlkörper 3 an der Stahlbewehrung 28 können zusätzlich Fixierstäbe 29, beispielsweise als Kunststoffröhrchen ausgeführt, benutzt werden, die zusammen mit den Hohlkörpern 3 an den Gitterstäben 33 der Stahlbewehrung 28 festgemacht werden und dadurch die Lage der Hohlkörper 3 an der Stahlbewehrung 28 -fixieren. Bei einer derartigen Anordnung der Hohlkörper 3 an der Stahlbewehrung 28 kann nun eine erste Betonschicht aufgegossen werden, so daß ein Deckenbauelement mit Betonarmierung als Halbfabrikat entsteht, das in behebigen Abmessungen vorproduziert werden kann. Der Einbau des Halbfabrikats erfolgt dann so, daß die bei der Produktion obenliegende Betonschicht, die die Stahlbewehrung und teilweise die daran befestigten Hohlkörper enthält, nach unten gedreht wird, auf Stützen unter Verzicht auf eine komplette Verschalung abgelegt wird und dann der noch fehlende obere Teil der Geschoßdecke an der Baustelle ausgegossen wird.For this purpose, the hollow bodies 3 are placed on a perforated plate 27 which, according to the intended positions of the hollow bodies 3, has depressions 31 which are matched to the shape of the hollow bodies. The shaped plate 27, which has a multiplicity of depressions 31 in the desired arrangement, serves to determine the exact position of the hollow body 3 for the subsequent steps of forming a floor. A steel reinforcement 28, which is advantageously designed in the usual form as a grid, is placed on the hollow body 3 located in the shaped plate 27, so that the hollow body 3 can be connected to the steel reinforcement 28. The hollow bodies 3 can be fastened to the steel reinforcement 28 in a wide variety of ways. For example, 3 connecting elements 32 can be provided on the hollow bodies, which are connected directly to the lattice bars of the steel reinforcement 28. To connect the hollow body 3 to the Lattice bars 33 of the steel reinforcement 28, the use of clamping brackets 30, for example made of profiled steel wire, is also conceivable. For further fixing of the hollow bodies 3 to the steel reinforcement 28, additional fixing rods 29, for example in the form of plastic tubes, can be used, which are fastened together with the hollow bodies 3 to the lattice bars 33 of the steel reinforcement 28 and thereby the position of the hollow bodies 3 on the steel reinforcement 28. fix. With such an arrangement of the hollow body 3 on the steel reinforcement 28, a first concrete layer can now be poured on, so that a ceiling component with concrete reinforcement is produced as a semifinished product, which can be pre-produced in substantial dimensions. The semi-finished product is then installed in such a way that the concrete layer at the top, which contains the steel reinforcement and some of the hollow bodies attached to it, is turned downwards on supports, without the need for complete formwork, and then the missing upper part of the Floor ceiling is poured out at the construction site.
Mit den vorgestellten Systemen ist es jedoch auch möglich, die Anordnung der Hohlkörper beispielsweise mit Hilfe der Fixierstangen 29 und der Verbindungselemente 32 bzw. Spannbügel 30 auch ohne Stahlbewehrung 28 vorzunehmen, so daß nur eine Gitteranordnung der Hohlkörper 3 als Halbfabrikat entsteht, das dann bei konventioneller Herstellungstechnik von Betongeschoßdecken mittels einer Verschalung und Ausgießen mit Beton Verwendung finden kann. Die Stahlbewehrung 28 einer derartigen Geschoßdecke wird dann separat von der Hohlkörperanordnung in der Geschoßdecke eingebaut.With the systems presented, however, it is also possible to arrange the hollow bodies, for example with the aid of the fixing rods 29 and the connecting elements 32 or clamping brackets 30, without steel reinforcement 28, so that only a lattice arrangement of the hollow bodies 3 is produced as a semi-finished product, which is then conventional Manufacturing technology of concrete floor slabs by means of formwork and pouring with concrete can be used. The steel reinforcement 28 of such a floor slab is then installed separately from the hollow body arrangement in the floor slab.
In Figur 5 und Figur 6 sind zwei Ansichten der Hohlkörperanordnung an einer gitterartigen Stahlbewehrung 28 zu sehen. Figur 5 zeigt einen Ausschnitt einer Draufsicht auf die in der Lochplatte 27 befindlichen Hohlkörper 3, die an der darauf gelegten Stahlbewehrung 28 befestigt sind. Außerdem ist eine weitere Befestigungsmöglichkeit der Hohlkörper 3 an der Stahlbewehrung 28 aufgezeigt. Wie in Figur 6 und Figur 9 näher dargestellt ist, besteht eine einfache Möglichkeit die Hohlkörper 3 an der Stahlbewehrung 28 zu befestigen darin, daß eine Stahlklammer 34 mit Widerhaken 35 so an dem Hohlkörper 3 befestigt wird, daß der Bügel 36 der Stahlklammer 34 den Gitterstab 33 der Stahlbewehrung 28 umfaßt und die Widerhaken 35 in den Hohlkörper eindringen. Da durch die Widerhaken 35 verhindert wird, daß die Klammer 34 sich von dem Hohlkörper 3 löst, ist dadurch eine feste und sichere Verbindung gegeben.5 and 6 show two views of the hollow body arrangement on a lattice-like steel reinforcement 28. FIG. 5 shows a section of a plan view of the hollow bodies 3 located in the perforated plate 27, which are fastened to the steel reinforcement 28 placed thereon. Another is Attachment possibility of the hollow body 3 shown on the steel reinforcement 28. As shown in Figure 6 and Figure 9 in more detail, a simple way to attach the hollow body 3 to the steel reinforcement 28 is that a steel bracket 34 with barbs 35 is attached to the hollow body 3 so that the bracket 36 of the steel bracket 34, the lattice bar 33 of the steel reinforcement 28 comprises and the barbs 35 penetrate into the hollow body. Since the barbs 35 prevent the clip 34 from detaching from the hollow body 3, this provides a firm and secure connection.
In Figur 6 ist die Seitenansicht einer Hohlkörperanordnung an einer Stahlbewehrung 28 gezeigt, so wie sie bei Verwendung nur einer Stahlbewehrung im unteren Bereich der Geschoßdecke in eine Betondecke eingebaut werden kann. Selbstverständlich kann bei Bedarf in ähnlicher Weise eine zweite Stahlbewehrung an der Oberseite angebracht werden.FIG. 6 shows the side view of a hollow body arrangement on a steel reinforcement 28, as can be installed in a concrete ceiling in the lower region of the floor ceiling when only one steel reinforcement is used. Of course, if necessary, a second steel reinforcement can be attached to the top in a similar manner.
In den Figuren 7 bis 10 sind Einzelheiten der Anbindung von Hohlkörpern 1 an der Stahlbewehrung 28 gezeigt. Während in Figur 9 die bereits beschriebene Alternative aus Klammern 34 mit Widerhaken 35 dargestellt ist, zeigen die Figuren7, 8 und 10 eine weitere Ausführungsform eines Verbindungselementes 32. Bei dieser Ausführungsform sind an dem Hohlkörper 3 Befestigungselemente 39 und 40 vorgesehen, die über einen Bügel 38 miteinander verbunden werden können. Zur Befestigung des Hohlkörpers 1 wird zwischen den Befestigungselementen 39, 40 der Gitterstab 33 einer Bewehrung 28 eingelegt, so daß er von dem Bügel 28 umschlossen werden kann. Der Bügel 38 ist an seinem einen Ende schwenkbar an dem Befestigungselement 40 angelenkt und wird an seinem anderen Ende beispielsweise mit einer Niete 37 am gegenüberhegenden Befestigungselement 39 festgemacht. Die Befestigungselemente 39, 40 sowie der Bügel 38 können vorzugsweise einstückig mit dem Hohlkörper 3 bzw. einer Hohlkörperhälfte ausgebildet sein. Die Hohlkörper werden zweckmäßigerweise jeweils aus mehreren, vornehmlich zwei Teilelementen aufgebaut und werden beispielsweise durch Spritzgießen hergestellt. Im beschriebenen Fall wurde die Anlenkung des Bügels 38 an dem Befestigungselement 40 über ein Scharnier element 41, vorzugsweise durch ein Filmscharnier, realisiert. Der Bügel, der jedoch aus jedem beliebigen Material hergestellt sein kann, vorzugsweise jedoch zur besseren Verspannung elastisch ausgeführt ist, kann selbstverständlich in jeder anderen bekannten Art und Weise angelenkt sein.FIGS. 7 to 10 show details of the connection of hollow bodies 1 to the steel reinforcement 28. While the alternative from brackets 34 with barbs 35 already described is shown in FIG. 9, FIGS. 7, 8 and 10 show a further embodiment of a connecting element 32. In this embodiment, fastening elements 39 and 40 are provided on the hollow body 3, which are via a bracket 38 can be connected. To fasten the hollow body 1, the lattice bar 33 of a reinforcement 28 is inserted between the fastening elements 39, 40, so that it can be enclosed by the bracket 28. The bracket 38 is pivotally articulated on the fastening element 40 at one end and is fastened at its other end, for example with a rivet 37, to the opposite fastening element 39. The fastening elements 39, 40 and the bracket 38 can preferably be formed in one piece with the hollow body 3 or a hollow body half. The hollow bodies are expediently constructed in each case from a plurality, in particular two, sub-elements and are produced, for example, by injection molding. In the case described, the Articulation of the bracket 38 on the fastening element 40 via a hinge element 41, preferably realized by a film hinge. The bracket, which can, however, be made of any material, but is preferably elastic for better bracing, can of course be articulated in any other known manner.
Neben der beschriebenen Anordnung der Hohlkörper 3 an einer Stahlbewehrung 28 oder über ein Fixiersystem mit Fixierstangen 29 ist für bestimmte Anwendungsfälle eine direkte Verbindung der Hohlkörper 3 zu einer Hohlkörpermatte vorteilhaft. In den Figuren 11 und 12 ist gezeigt, wie durch an den Hohlkörpern 3 angebrachte Laschen 42 eine Verbindung zwischen den Hohlkörpern 3 hergestellt werden kann. Die Laschen 42 sind über ein Scharnierelement 44, das beispielsweise als Filmscharnier ausgeführt sein kann, an den Hohlkörpern 3 und dabei vorzugsweise an einem Flansch 12 des Hohlkörpers 3 angelenkt, so daß sie in Richtung auf einen benachbarten Hohlkörper geklappt werden können. An dem benachbarten Hohlkörper 3 sind entsprechend an dem Flansch 12 Rastöffnungen 43 vorgesehen, in die die an den Laschen 42 befestigten Rasthaken 44 einrasten können, um eine feste Verbindung zwischen den Hohlkörpern 3 zu erzielen. Wie in Figur 18 gezeigt ist, ist es besonders vorteilhaft, wechselseitig jeweils zwei Laschen 42 bzw. Rastöffnungen 43 an benachbarten Hohlkörpern 3 vorzusehen, da dies zu einer erhöhten Stabilität der zu der Hohlkörpermatte verbundenen Hohlkörper 3 führt. Selbstverständlich können an jedem Hohlkörper 3 eine Vielzahl von derartigen Elementen vorgesehen sein, um möglichst viele benachbarte Hohlkörper miteinander verbinden zu können. Der an der Lasche 42 befestigte Rasthaken 45 ist vorzugsweise als Schnappfederelement ausgeführt, bei dem der den Widerhaken bildende Teil elastisch federnd ausgeführt ist, um eine eventuelle Lösung der Verbindung zu ermöglichen.In addition to the arrangement of the hollow bodies 3 described on a steel reinforcement 28 or via a fixing system with fixing rods 29, a direct connection of the hollow bodies 3 to a hollow body mat is advantageous for certain applications. FIGS. 11 and 12 show how a connection between the hollow bodies 3 can be established by tabs 42 attached to the hollow bodies 3. The tabs 42 are articulated via a hinge element 44, which can be designed, for example, as a film hinge, to the hollow bodies 3, and preferably to a flange 12 of the hollow body 3, so that they can be folded in the direction of an adjacent hollow body. On the adjacent hollow body 3, locking openings 43 are correspondingly provided on the flange, into which the locking hooks 44 fastened to the tabs 42 can snap in order to achieve a firm connection between the hollow bodies 3. As shown in FIG. 18, it is particularly advantageous to alternately provide two tabs 42 or latching openings 43 on adjacent hollow bodies 3, since this leads to increased stability of the hollow bodies 3 connected to the hollow body mat. Of course, a large number of such elements can be provided on each hollow body 3 in order to be able to connect as many adjacent hollow bodies as possible. The latching hook 45 fastened to the tab 42 is preferably designed as a snap spring element in which the part forming the barb is designed to be elastically resilient in order to enable the connection to be loosened if necessary.
In einer weiteren zweckmäßigen Aus_u___rungsform können an den Hohlkörpern Rastelemente in Art von Rasthaken, die nach außen vorspringen, oder tangeh- tiale oder umlaufende Ausnehmungen in Art von Einschnürungen vorgesehen sein, die ein Aufclipsen bzw. AncHpsen der Hohlkörper-Elemente an das Bewehrungsgitter zum Zwecke der Anbin düng der Hohlkörper ermöglichen. Dadurch können zusätzliche Hilfsmittel für die Anbindung vermieden werden, da die Rastelemente einstückig an den Hohlkörper-Elementen bei Bedarf ausgebildet sein können. Die Rastelemente können aber auch gesondert an den Hohlkörpern ausgebildet sein, etwa, indem Hohlkörper-Öffnungen vorgesehen sind, in welche die Rastelemente stopfenartig eingedrückt werden. Für die Anbindung der Rastelemente an das Bewehrungsgitter eignet sich auch eine klemmenartige Ausbildung der Enden der Rastelemente. In a further expedient embodiment, latching elements in the manner of latching hooks which protrude outwards or tangeh- tial or circumferential recesses can be provided in the manner of constrictions, which enable the hollow body elements to be clipped on or anchored to the reinforcement mesh for the purpose of attaching the hollow body. As a result, additional aids for the connection can be avoided, since the latching elements can be formed in one piece on the hollow body elements if necessary. However, the latching elements can also be formed separately on the hollow bodies, for example by providing hollow body openings into which the latching elements are pressed in a plug-like manner. A clamp-like design of the ends of the locking elements is also suitable for connecting the locking elements to the reinforcement grid.

Claims

Patentansprüche claims
1. Vorrichtung zur Versteifung von großflächigen Betonelementen, insbesondere von Böden und Decken von Betonbauwerken, mit in den Betonelementen eingebetteten Hohlkörpern und Bewehrungsgittern, dadurch gekennzeichnet, daß die oberhalb oder unterhalb des Bewehrungsgitters (2, 28) angeordneten Hohlkörper (3) an dem Bewehrungsgitter unmittelbar durch VerbindungsgHeder gegen Auftrieb gesichert angebunden sind.1. Device for stiffening large-area concrete elements, in particular floors and ceilings of concrete structures, with hollow bodies and reinforcement meshes embedded in the concrete elements, characterized in that the hollow bodies (3) arranged above or below the reinforcement mesh (2, 28) on the reinforcement mesh directly are secured against buoyancy by connecting springs.
2. Vorrichtung als Halbzeug zur Herstellung von versteiften Betonelementen mit darin eingebetteten Hohlkörpern, insbesondere zur HersteUung von Böden und Decken von Betonbau werken, gekennzeichnet durch ein Bewehrungsgitter (2, 28) mit daran angeordneten Hohlkörpern (3), bei dem das Bewehrungsgitter (2, 28) vollständig in einer ebenen Betonschale (1) eingebettet ist, in welche auch die Hohlkörper (3) teilweise eingebettet sind.2. Device as a semi-finished product for the production of stiffened concrete elements with hollow bodies embedded therein, in particular for the manufacture of floors and ceilings of concrete structures, characterized by a reinforcement grid (2, 28) with hollow bodies arranged thereon (3), in which the reinforcement grid (2, 28) is completely embedded in a flat concrete shell (1), in which the hollow bodies (3) are also partially embedded.
3. Vorrichtung nach Anspruch 2 dadurch gekennzeichnet, daß das Bewehrungsgitter (2, 28) mit einem auf den Hohlkörpern (3) angeordneten weiteren Bewehrungsgitter (4) durch VerbindungsgHeder (5) verbunden ist.3. Device according to claim 2, characterized in that the reinforcement grid (2, 28) is connected to a further reinforcement grid (4) arranged on the hollow bodies (3) by means of connecting springs (5).
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß das obere Bewehrungsgitter (4) mittels Distanzglieder (5) auf der oberen Fläche der Betonschale (1) befestigt, vorzugsweise verklebt ist.4. The device according to claim 3, characterized in that the upper reinforcement grid (4) by means of spacers (5) on the upper surface of the concrete shell (1) is fixed, preferably glued.
5. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die5. The device according to claim 3, characterized in that the
VerbindungsgHeder (5) der Bewehrungsgitter (2, 4) teilweise in die untere Betonschale eingebettet sind, wobei die VerbindungsgHeder (5) die beiden Bewehrungsgitter (2, 4) im gleichen Abstand zur Bildung eines käfigartigen Gebildes halten, innerhalb dem die Hohlkörper (3) aufgefangen sind.The connecting bars (5) of the reinforcing bars (2, 4) are partially embedded in the lower concrete shell, the connecting bars (5) holding the two reinforcing bars (2, 4) at the same distance to form a cage-like structure within which the hollow bodies (3) are caught.
6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die ebene Betonschale als verlorene Schalung dient und eine Dicke im Bereich von 4 bis 7 cm, insbesondere 5 - 6 cm aufweist. 6. Device according to one of the preceding claims, characterized in that the flat concrete shell serves as lost formwork and has a thickness in the range of 4 to 7 cm, in particular 5-6 cm.
7. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in den Hohlkörpern Halteelemente zur Verankerung im Beton ausgebildet sind, die insbesondere durch Taschen (8), rillenartige Einschnürungen (9), Vorsprünge und dgl. gebildet sind.7. Device according to one of the preceding claims, characterized in that holding elements for anchoring in the concrete are formed in the hollow bodies, which are formed in particular by pockets (8), groove-like constrictions (9), projections and the like.
8. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Hohlkörper (3) mit Rastelementen ausgebildet sind, mit denen die Hohlkörper an das Bewehrungsgitter (2) anchpsbar sind.8. Device according to one of the preceding claims, characterized in that the hollow body (3) are formed with locking elements with which the hollow body can be anchps to the reinforcement grid (2).
9. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Hohlkörper durch VerbindungsgHeder an dem Bewehrungsgitter (2) angebunden sind, die vorzugsweise durch Spannbügel, Klammern mit Widerhaken oder Klemmen gebildet sind. 9. Device according to one of the preceding claims, characterized in that the hollow bodies are connected to the reinforcement grid (2) by means of connecting springs, which are preferably formed by clamping brackets, clamps with barbs or clamps.
EP99927935A 1998-06-10 1999-06-09 Device for stiffening large-surface concrete elements, especially floors and ceilings of multistory buildings Expired - Lifetime EP1086281B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19825956 1998-06-10
DE19825956 1998-06-10
PCT/EP1999/003982 WO1999064693A1 (en) 1998-06-10 1999-06-09 Device for stiffening large-surface concrete elements, especially floors and ceilings of multistory buildings

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EP1086281A1 true EP1086281A1 (en) 2001-03-28
EP1086281B1 EP1086281B1 (en) 2005-09-07

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AU (2) AU4510599A (en)
DE (2) DE59912529D1 (en)
WO (2) WO1999064693A1 (en)

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GB0523011D0 (en) * 2005-11-11 2005-12-21 Kalantar Harmozi Alireza High abrasion resistant material
BE1019066A3 (en) * 2009-12-08 2012-02-07 Didak Injection Nv CAVE FULL BODY FOR CONSTRUCTIONS IN CONCRETE.
EP2336445A1 (en) * 2009-12-21 2011-06-22 Cobiax Technologies AG Half shell element for producing a cavity
ES1128881Y (en) * 2014-07-25 2015-01-20 Aparicio Jorge Cases LIGHTENING FILLING BODY FOR CONCRETE Slabs and Slabs
DE102015009485B4 (en) * 2015-07-21 2019-11-21 Andrej Albert Arrangements of displacement bodies for insertion into reinforced concrete components, displacement body and serving to secure the displacement body holding and spacer elements and reinforced concrete component
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Also Published As

Publication number Publication date
DE19981047D2 (en) 2001-09-13
AU4607199A (en) 1999-12-30
WO1999064696A1 (en) 1999-12-16
WO1999064693A9 (en) 2000-02-10
AU4510599A (en) 1999-12-30
WO1999064693A1 (en) 1999-12-16
DE59912529D1 (en) 2005-10-13
EP1086281B1 (en) 2005-09-07

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