EP0066647B1 - Building slab - Google Patents

Building slab Download PDF

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Publication number
EP0066647B1
EP0066647B1 EP81106066A EP81106066A EP0066647B1 EP 0066647 B1 EP0066647 B1 EP 0066647B1 EP 81106066 A EP81106066 A EP 81106066A EP 81106066 A EP81106066 A EP 81106066A EP 0066647 B1 EP0066647 B1 EP 0066647B1
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EP
European Patent Office
Prior art keywords
displacement body
armouring
concrete
grid
raised portions
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Expired
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EP81106066A
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German (de)
French (fr)
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EP0066647A1 (en
Inventor
Heinz Ing.Grad. Carl
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Individual
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Individual
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Priority to AT81106066T priority Critical patent/ATE10525T1/en
Publication of EP0066647A1 publication Critical patent/EP0066647A1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/044—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of concrete
    • 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

Definitions

  • the invention relates to a building board of the type explained in the preamble of claim 1.
  • Such a building board is known from DE-A-2536731, which is produced by first pouring a concrete base plate.
  • the reinforcement cage consisting of the reinforcement mat, the displacement bodies and the rib reinforcement is then placed on this lower plate.
  • This reinforcement is assembled by hand on the construction site. The distances between the recesses must first be determined and the displacement bodies placed at these distances and secured against slipping. Then the reinforcement bars for the rib reinforcement are inserted individually and connected to the reinforcement mat. These rods must be held in position during the connection. Only then can the further concrete be poured in up to the height of the finished concrete slab. This building board is therefore relatively time-consuming and costly to manufacture.
  • the displacement body is a hollow body made of plastic with an open underside.
  • plastic displacement bodies in order to be able to withstand the weight of the poured concrete, such plastic displacement bodies must either be of relatively thick-walled design or be provided with reinforcing ribs. Their manufacture is also tied to specially equipped companies. This type of displacement body therefore makes the building board even more expensive.
  • Reinforcement meshes are known from CH-A-492098 and FR-A-15 20 032, in which elevations are molded. However, these reinforcement mats are only intended for solid concrete building boards, in which neither rib reinforcement nor displacement bodies are necessary.
  • a displacement body is known from DE-U-17 45 422, which was produced using plastic film.
  • This displacement body which is closed on all sides, has wooden disks as supports and reed or wooden slats connecting these supports, which are covered with the plastic film attached to the wooden slats.
  • This displacement body is therefore relatively cumbersome to manufacture and very expensive.
  • the invention has for its object to design a reinforced, ribbed building board so that it is less time and cost consuming to produce.
  • the sub-claim 4 describes a particularly advantageous embodiment of a reinforcement mat, in particular for producing the building board according to the invention, the zigzag or wavy longitudinal bars colliding with the tips representing a particularly advantageous possibility of making the elevations shear-resistant.
  • the reinforcing struts according to subclaim 5 bring about a further improvement in stability.
  • the feet or the foot area of the displacer can be snapped in between the additional longitudinal bar according to subclaim 6 and the adjacent longitudinal bar of a base edge. In this way, further protection against displacement of the displacement body is achieved.
  • the film-free foot area according to subclaim 7 makes it easier to put on or fasten the displacement body.
  • a ribbed concrete slab with a lower plate 1, an upper plate 2 and ribs 3 can be seen, which is cast monolithically from concrete.
  • the ribs 3 form the lateral delimitation of recesses, which are brought about by displacement bodies 4, which are only shown schematically here.
  • the term “recess” is used to define a concrete-free space, which is also complete, for example with Foam plastic or lightweight concrete, can be filled.
  • a hollow-profile displacement body described in more detail under FIG. 5, made of a metal lattice work covered with plastic film is used.
  • the lower plate 1 is provided with a reinforcement mat 5 made of longitudinal bars 5a and crossbars 50.
  • the reinforcement mat 5 has alternating flat areas 6 and elevations 7.
  • the flat areas 6 are expediently dimensioned such that the displacement bodies 4 are accommodated between the elevations 7 with almost no displacement and thus their position in the finished building board is fixed.
  • the elevations 7 are created by triangular unfolding of the reinforcement mat 5.
  • the height of the surveys 7 depends u. a. according to the height of the displacement bodies 4 and according to the static load on the ribs 3.
  • Fig. 2 shows a section through a building board according to the invention, in which the top plate 2 is also provided with a reinforcement mat 8.
  • the upper reinforcement mat 8 is flat and can be connected to the tips of the elevations 7.
  • reinforcing struts 9 run across the lower open side of the elevations 7, parallel to the transverse bars 5b in the plane of the flat areas 6.
  • the reinforcing struts 9 are connected to the flat areas 6 in a suitable manner, for example by welding, and keep the width of the lower open sides of the elevation 7 constant even under load.
  • it is not absolutely necessary that the reinforcing struts are welded on both sides of each unfolding. In principle, two welds are sufficient, which are attached on both sides of all folds.
  • FIG. 3 shows a particularly preferred embodiment of the reinforcement mat 5 consisting of crossed longitudinal and transverse bars 5a and 5b.
  • One of the longitudinal bars 5a is located at the top and at the base edges of the triangular unfolding 7. Between the longitudinal rod at the tip and those on the base edges of the unfolding 7, a zigzag or wavy longitudinal rod 5'a is attached.
  • An additional longitudinal rod 5 "a runs parallel and at a distance from the longitudinal rods of the base edge. The type of attachment and the function of these longitudinal rods 5" a are explained below in connection with the description of FIG. 5.
  • FIG. 4 shows the reinforcement mat 5 before the deformation.
  • the reinforcement mat 5 is produced in such a way that the longitudinal and transverse bars 5a, 5'a, 5 "a and 5b are first connected to one another to form a flat reinforcement mat.
  • the straight longitudinal bars 5a are located next to one another at such a distance that the later flat areas 6 correspond to the dimensions of the displacers 4, and that one of the longitudinal bars 5a continues to lie on each edge of the later triangular fold 7.
  • the longitudinal bars 5'a which are expediently produced by bending or running in a zigzag pattern are on both sides of the longitudinal bar later forming the tip of the fold 7, the corresponding curvatures of the two longitudinal bars 5'a of a fold 7 being able to collide at the tip.
  • the bends of the longitudinal bars 5'a cover the entire area between the longitudinal bar at the tip and the associated basic longitudinal bar If necessary, parallel and at a distance to the longitudinal bars of the Base edges the additional longitudinal rods 5 "a are provided for snapping the displacement body 4. During the subsequent welding of the reinforcement mat, special care must be taken to ensure that each of the curvatures of the longitudinal bars 5'a is connected to the adjacent straight longitudinal bar. Then the elevations 7 are unfolded. If necessary, the width of the lower open side of the unfolding 7 and thus its height is fixed by the reinforcing struts 8 attached to suitable flat areas 6.
  • the displacement body 4 is formed here by a hollow profile made of latticework 10 and a plastic film 11 that is open at the bottom.
  • the latticework 10 consists of a structural steel mat brought into the shape of the displacer 4.
  • the plastic film 11 was attached by shrinking on.
  • the displacement body 4 has a film-free foot region 12.
  • the foot area 12 was inserted between the basic longitudinal bar and the additional longitudinal bar 5 "a through the reinforcement mat 5. If necessary, the displacement body 4 can be fixed in this position either by wire or by welding.
  • the additional longitudinal bars 5" a can be or be attached to one side of each flat area 6, which receives a displacement body 4.
  • the distance to the adjacent basic longitudinal bar depends on the dimensions of the foot area 12 or other walls or feet of the displacement bodies 4 to be snapped in.
  • the additional longitudinal bar 5 "a can also rest on the side of the transverse bars 5b facing the displacement body. In this way also a hollow profile displacement body with an unbroken wall can be held.
  • the invention is not limited to the described embodiments. So z. B. the form of the surveys can be varied, if this appears appropriate. Furthermore, the zigzag longitudinal rod does not necessarily have to be made by bending.
  • the displacer made of latticework and plastic film can also be used without the film-free foot area. In this case, it is placed on the flat area and held, for example, with wire.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Electromagnetism (AREA)
  • Physics & Mathematics (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Building Environments (AREA)
  • Fluid-Damping Devices (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

1. Armoured concrete building slab comprising at least one armouring grid (5) and at least one cavity formed in the concrete by means of a displacement body (4) and limited on at least two sides thereof by likewise armoured concrete ribs (3), characterized in that the armouring of said concrete ribs (3) comprises raised portions (7) formed in said armouring grid (5) at spaced locations, the dimensions of the planar portion (6) between each two raised portions (7) approximately corresponding to the dimension of said displacement body (4) transversely of said raised portions (7), so that said displacement body (4) is received between said raised portions (7) in a substantially non-shiftable manner, said displacement body consisting of a downwards opening hollow profile formed of a grid structure (10) of metal rods, and a plastic sheet material (11) covering the side of said grid structure facing towards the concrete.

Description

Die Erfindung bezieht sich auf eine Bauplatte der im Oberbegriff von Anspruch 1 erläuterten Art.The invention relates to a building board of the type explained in the preamble of claim 1.

Aus der DE-A-2536731 ist eine derartige Bauplatte bekannt, die hergestellt wird, indem zunächst eine Unterplatte aus Beton vergossen wird. Auf diese Unterplatte wird dann der aus der Bewehrungsmatte, den Verdrängungskörpern und der Rippenbewehrung bestehende Armierungskorb aufgesetzt. Diese Armierung wird auf der Baustelle von Hand zusammengesetzt. Dabei müssen zunächst die Abstände der Ausnehmungen bestimmt und die Verdrängungskörper in diesen Abständen aufgesetzt und gegen Verrutschen gesichert werden. Danach werden die Bewehrungsstäbe für die Rippenbewehrung einzeln eingebracht und mit der Bewehrungsmatte verbunden. Während des Verbindens müssen diese Stäbe in ihrer Position gehalten werden. Erst dann kann der weitere Beton bis zur Höhe der fertigen Betonplatte eingegossen werden. Diese Bauplatte ist somit relativ zeit- und kostenaufwendig in der Herstellung.Such a building board is known from DE-A-2536731, which is produced by first pouring a concrete base plate. The reinforcement cage consisting of the reinforcement mat, the displacement bodies and the rib reinforcement is then placed on this lower plate. This reinforcement is assembled by hand on the construction site. The distances between the recesses must first be determined and the displacement bodies placed at these distances and secured against slipping. Then the reinforcement bars for the rib reinforcement are inserted individually and connected to the reinforcement mat. These rods must be held in position during the connection. Only then can the further concrete be poured in up to the height of the finished concrete slab. This building board is therefore relatively time-consuming and costly to manufacture.

Der Verdrängungskörper ist ein aus Kunststoff hergestellter Hohlkörper mit offener Unterseite. Derartige Verdrängungskörper aus Kunststoff müssen jedoch, um dem Gewicht des aufgeschütteten Betons standhalten zu können, entweder relativ dickwandig ausgestaltet oder mit Verstärkungsrippen versehen sein. Auch ist ihre Herstellung an speziell dafür ausgerüstete Betriebe gebunden. Diese Art der Verdrängungskörper verteuert somit die Bauplatte zusätzlich.The displacement body is a hollow body made of plastic with an open underside. However, in order to be able to withstand the weight of the poured concrete, such plastic displacement bodies must either be of relatively thick-walled design or be provided with reinforcing ribs. Their manufacture is also tied to specially equipped companies. This type of displacement body therefore makes the building board even more expensive.

Aus der CH-A-492098 und der FR-A-15 20 032 sind Bewehrungsmatten bekannt, in die Erhebungen eingeformt sind. Diese Bewehrungsmatten sind jedoch ausschließlich für Vollbeton-Bauplatten vorgesehen, bei denen weder eine Rippenbewehrung noch Verdrängungskörper notwendig sind.Reinforcement meshes are known from CH-A-492098 and FR-A-15 20 032, in which elevations are molded. However, these reinforcement mats are only intended for solid concrete building boards, in which neither rib reinforcement nor displacement bodies are necessary.

Aus dem DE-U-17 45 422 ist ein Verdrängungskörper bekannt, der unter Verwendung von Kunstoff-Folie hergestellt wurde. Dieser allseitig geschlossene Verdrängungskörper weist Holzscheiben als Träger und diese Träger verbindende Schilfrohr- oder Holzlatten auf, die mit der auf den Holzlatten befestigten Kunststoff-Folie bedeckt sind. Dieser Verdrängungskörper ist deshalb relativ umständlich herstellbar und sehr kostenaufwendig.A displacement body is known from DE-U-17 45 422, which was produced using plastic film. This displacement body, which is closed on all sides, has wooden disks as supports and reed or wooden slats connecting these supports, which are covered with the plastic film attached to the wooden slats. This displacement body is therefore relatively cumbersome to manufacture and very expensive.

Der Erfindung liegt die Aufgabe zugrunde, eine bewehrte, mit Rippen versehene Bauplatte so auszugestalten, daß sie wenig zeit- und kostenaufwendig herstellbar ist.The invention has for its object to design a reinforced, ribbed building board so that it is less time and cost consuming to produce.

Die Aufgabe wird durch die im Hauptanspruch angegebene Erfindung gelöst.The object is achieved by the invention specified in the main claim.

Durch die eingeformten Erhebungen in zweckmäßigerweise der unteren Bewehrungsmatte wird ohne weitere Handarbeit eine effektive Beweherung der Betonrippen erreicht. Die zwischen den Erhebungen liegenden ebenen Bereiche, deren Breite annähernd der Breite des Verdrängungskörpers entspricht, bilden eine ideale Aufnahme für die Verdrängungskörper, die somit, zumindest in Querrichtung, annähernd verschiebungsfrei festgelegt werden können. Auch wird die Lage der Verdrängungskörper somit vorherbestimmbar, ohne daß umfangreiche Ausrichtarbeiten bei der Herstellung der Bauplatte notwendig sind. Der erfindungsgemäß verwendete Verdrängungskörper ist bei guter Stabilität trotzdem extrem leicht und auch auf der Baustelle in den unterschiedlichsten Größen herstellbar. Nach Bedarf kann, nach Unteranspruch 3, eine zweite obere Bewehrungsmatte mit den Erhebungen verbunden sein.Due to the molded-in elevations in the lower reinforcement mat, effective reinforcement of the concrete ribs is achieved without further manual work. The flat areas lying between the elevations, the width of which approximately corresponds to the width of the displacement body, form an ideal receptacle for the displacement body, which can thus be set, at least in the transverse direction, with almost no displacement. The position of the displacement bodies can thus also be predetermined without extensive alignment work being necessary in the production of the building board. The displacement body used according to the invention is nevertheless extremely light with good stability and can also be produced in a wide variety of sizes on the construction site. If required, a second upper reinforcement mat can be connected to the elevations according to subclaim 3.

Der Unteranspruch 4 beschreibt eine besonders vorteilhafte Ausführung einer Bewehrungsmatte insbesondere zum Herstellen der erfindungsgemäßen Bauplatte, wobei die mit den Spitzen zusammenstoßenden zick-zack- oder wellenförmigen Längsstäbe eine besonders vorteilhafte Möglichkeit darstellen, die Erhebungen schubfest auszubilden.The sub-claim 4 describes a particularly advantageous embodiment of a reinforcement mat, in particular for producing the building board according to the invention, the zigzag or wavy longitudinal bars colliding with the tips representing a particularly advantageous possibility of making the elevations shear-resistant.

Die Verstärkungsstreben nach Unteranspruch 5 bewirken eine weitere Verbesserung der Stabilität.The reinforcing struts according to subclaim 5 bring about a further improvement in stability.

Zwischen dem zusätzlichen Längsstab nach Unteranspruch 6 und dem benachbarten Längsstab einer Basiskante können auf einfache Weise die Füße bzw. der Fußbereich des Verdrängungskörpers eingerastet werden. Auf diese Weise wird eine weitere Sicherung gegen Verschiebung des Verdrängungskörpers erreicht.The feet or the foot area of the displacer can be snapped in between the additional longitudinal bar according to subclaim 6 and the adjacent longitudinal bar of a base edge. In this way, further protection against displacement of the displacement body is achieved.

Der folienfreie Fußbereich nach Unteranspruch 7 erleichtert das Aufsetzen bzw. Befestigen des Verdrängungskörpers.The film-free foot area according to subclaim 7 makes it easier to put on or fasten the displacement body.

Ausführungsbeispiele der Erfindung werden nachstehend anhand der Zeichnungen näher erläutert. Es zeigen :

  • Figur 1 Schnitt durch eine schematisch gezeichnete Rippenbetonplatte mit durch Auffaltung der Basis-Bewehrungsmatte bewirkten Bewehrung der Rippen,
  • Figur 2 Schnitt durch eine schematisch gezeichnete Rippenbetonplatte mit einer zusätzlichen oberen Bewehrungsmatte,
  • Figur 3 perspektivische Ansicht einer für die erfindungsgemäße Bauplatte verwendeten Bewehrungsmatte,
  • Figur 4 Draufsicht auf die noch nicht verformte Bewehrungsmatte aus Fig. 3, und
  • Figur 5 vergrößerter Schnitt durch die Aufsitzstelle eines Verdrängungskörpers aus mit Kunststoffolie überzogenem Gitterwerk.
Embodiments of the invention are explained below with reference to the drawings. Show it :
  • FIG. 1 section through a schematically drawn ribbed concrete slab with reinforcement of the ribs caused by unfolding the basic reinforcement mat,
  • FIG. 2 section through a schematically drawn ribbed concrete slab with an additional upper reinforcement mat,
  • FIG. 3 is a perspective view of a reinforcement mat used for the building board according to the invention,
  • Figure 4 top view of the not yet deformed reinforcement mat from Fig. 3, and
  • 5 shows an enlarged section through the seat of a displacement body made of latticework covered with plastic film.

In Fig. 1 ist eine Rippenbetonplatte mit einer Unterplatte 1, einer Oberplatte 2 und Rippen 3 ersichtlich, die monolithisch aus Beton gegossen ist. Die Rippen 3 bilden die seitliche Begrenzung von Ausnehmungen, die durch hier nur schematisch gezeichnete Verdrängungskörper 4 bewirkt werden. Mit dem Begriff « Ausnehmung » soll hier ein betonfreier Raum definiert werden, der jedoch auch vollständig, beispielsweise mit Schaumkunststoff oder Leichtbeton, ausgefüllt sein kann. Zum Formen der Ausnehmung wird jedoch ein unter Fig. 5 näher beschriebener Hohlprofil-Verdrängungskörper aus einem mit Kunststoffolie überzogenen Metallgitterwerk verwendet.In Fig. 1 a ribbed concrete slab with a lower plate 1, an upper plate 2 and ribs 3 can be seen, which is cast monolithically from concrete. The ribs 3 form the lateral delimitation of recesses, which are brought about by displacement bodies 4, which are only shown schematically here. The term “recess” is used to define a concrete-free space, which is also complete, for example with Foam plastic or lightweight concrete, can be filled. To form the recess, however, a hollow-profile displacement body, described in more detail under FIG. 5, made of a metal lattice work covered with plastic film is used.

Die Unterplatte 1 ist mit einer Bewehrungsmatte 5 aus Längsstäben 5a und Querstäben 50 versehen. Die Bewehrungsmatte 5 weist abwechselnd ebene Bereiche 6 und Erhebungen 7 auf. Die ebenen Bereiche 6 sind zweckmäßigerweise so bemessen, daß die Verdrängungskörper 4 annähernd verschiebungsfrei zwischen den Erhebungen 7 aufgenommen werden und somit ihre Lage in der fertigen Bauplatte festgelegt ist. Die Erhebungen 7 sind durch dreikantige Auffaltungen der Bewehrungsmatte 5 entstanden. Die Höhe der Erhebungen 7 richtet sich u. a. nach der Höhe der Verdrängungskörper 4 und nach der statischen Belastung der Rippen 3.The lower plate 1 is provided with a reinforcement mat 5 made of longitudinal bars 5a and crossbars 50. The reinforcement mat 5 has alternating flat areas 6 and elevations 7. The flat areas 6 are expediently dimensioned such that the displacement bodies 4 are accommodated between the elevations 7 with almost no displacement and thus their position in the finished building board is fixed. The elevations 7 are created by triangular unfolding of the reinforcement mat 5. The height of the surveys 7 depends u. a. according to the height of the displacement bodies 4 and according to the static load on the ribs 3.

Fig. 2 zeigt einen Schnitt durch eine erfindungsgemäße Bauplatte, bei der auch die Oberplatte 2 mit einer Bewehrungsmatte 8 versehen ist. Die obere Bewehrungsmatte 8 ist eben und kann mit den Spitzen der Erhebungen 7 verbunden sein. Zur Erhöhung der Stabilität verlaufen quer über die untere offene Seite der Erhebungen 7, parallel zu den Querstäben 5b in der Ebene der ebenen Bereiche 6, Verstärkungsstreben 9. Die Verstärkungsstreben 9 sind in geeigneter Weise, beispielsweise durch Schweißen, mit den ebenen Bereichen 6 verbunden und halten die Breite der unteren offenen Seiten der Erhebung 7 auch unter Belastung konstant. Zu diesem Zweck ist es nicht unbedingt erforderlich, daß die Verstärkungsstreben beidseitig jeder Auffaltung verschweißt werden. Prinzipiell genügen zwei Schweißstellen, die beidseitig aller Auffaltungen angebracht werden.Fig. 2 shows a section through a building board according to the invention, in which the top plate 2 is also provided with a reinforcement mat 8. The upper reinforcement mat 8 is flat and can be connected to the tips of the elevations 7. To increase the stability, reinforcing struts 9 run across the lower open side of the elevations 7, parallel to the transverse bars 5b in the plane of the flat areas 6. The reinforcing struts 9 are connected to the flat areas 6 in a suitable manner, for example by welding, and keep the width of the lower open sides of the elevation 7 constant even under load. For this purpose it is not absolutely necessary that the reinforcing struts are welded on both sides of each unfolding. In principle, two welds are sufficient, which are attached on both sides of all folds.

. In Fig. 3 ist eine besonders bevorzugte Ausführungsform der Bewehrungsmatte 5 aus gekreuzten Längs- und Querstäben 5a und 5b ersichtlich. Jeweils an der Spitze und an den Basiskanten der dreikantigen Auffaltung 7 befindet sich einer der Längsstäbe 5a. Zwischen jeweils dem Längsstab an der Spitze und denen an den Basiskanten der Auffaltung 7 ist ein zick-zack- bzw. wellenförmig gebogener Längsstab 5'a befestigt. Parallel und im Abstand zu den Längsstäben der Basiskante verläuft jeweils ein zusätzlicher Längsstab 5"a. Die Art der Anbringung und die Funktion dieser Längsstäbe 5"a wird weiter unten im Zusammenhang mit der Beschreibung der Fig. 5 erläutert. . 3 shows a particularly preferred embodiment of the reinforcement mat 5 consisting of crossed longitudinal and transverse bars 5a and 5b. One of the longitudinal bars 5a is located at the top and at the base edges of the triangular unfolding 7. Between the longitudinal rod at the tip and those on the base edges of the unfolding 7, a zigzag or wavy longitudinal rod 5'a is attached. An additional longitudinal rod 5 "a runs parallel and at a distance from the longitudinal rods of the base edge. The type of attachment and the function of these longitudinal rods 5" a are explained below in connection with the description of FIG. 5.

Zur Verdeutlichung zeigt Fig. 4 die Bewehrungsmatte 5 vor der Verformung. Bei der Herstellung der Bewehrungsmatte 5 wird so vorgegangen, daß die Längs- und Querstäbe 5a, 5'a, 5"a und 5b miteinander zunächst zu einer ebenen Bewehrungsmatte verbunden werden. Dabei befinden sich die geraden Längsstäbe 5a in einem solchen Abstand nebeneinander, daß die späteren ebenen Bereiche 6 den Abmessungen der Verdrängskörper 4 entsprechen, und daß weiterhin an jeder Kante der späteren dreikantigen Auffaltung 7 einer der Längsstäbe 5a zu liegen kommt. Die zweckmäßigerweise durch Biegen hergestellten wellen- bzw. zick-zackförmig verlaufenden Längsstäbe 5'a sind beiderseits des später die Spitze der Auffaltung 7 bildenden Längsstabes angeordnet, wobei die sich entsprechenden Krümmungen der beiden Längsstäbe 5'a einer Auffaltung 7 an der Spitze zusammenstoßen können. Die Biegungen der Längsstäbe 5'a überstreichen die gesamte Fläche zwischen dem Längsstab an der Spitze und dem zugehörigen Basis-Längsstab. Falls erforderlich können parallel und im Abstand zu den Längsstäben der Basiskanten die zusätzlichen Längsstäbe 5"a zum Einrasten der Verdrängungskörper 4 vorgesehen werden. Beim nachfolgenden Verschweißen der Bewehrungsmatte ist besonders darauf zu achten, daß jede der Krümmungen der Längsstäbe 5'a mit dem anliegenden geraden Längsstab verbunden wird. Danach werden die Erhebungen 7 aufgefaltet.. Falls erforderlich, wird die Breite der unteren offenen Seite der Auffaltung 7 und somit deren Höhe durch die an geeigneten ebenen Bereichen 6 befestigten Verstärkungsstreben 8 fixiert.For clarification, FIG. 4 shows the reinforcement mat 5 before the deformation. The reinforcement mat 5 is produced in such a way that the longitudinal and transverse bars 5a, 5'a, 5 "a and 5b are first connected to one another to form a flat reinforcement mat. The straight longitudinal bars 5a are located next to one another at such a distance that the later flat areas 6 correspond to the dimensions of the displacers 4, and that one of the longitudinal bars 5a continues to lie on each edge of the later triangular fold 7. The longitudinal bars 5'a which are expediently produced by bending or running in a zigzag pattern are on both sides of the longitudinal bar later forming the tip of the fold 7, the corresponding curvatures of the two longitudinal bars 5'a of a fold 7 being able to collide at the tip. The bends of the longitudinal bars 5'a cover the entire area between the longitudinal bar at the tip and the associated basic longitudinal bar If necessary, parallel and at a distance to the longitudinal bars of the Base edges the additional longitudinal rods 5 "a are provided for snapping the displacement body 4. During the subsequent welding of the reinforcement mat, special care must be taken to ensure that each of the curvatures of the longitudinal bars 5'a is connected to the adjacent straight longitudinal bar. Then the elevations 7 are unfolded. If necessary, the width of the lower open side of the unfolding 7 and thus its height is fixed by the reinforcing struts 8 attached to suitable flat areas 6.

Fig. 5 zeigt eine detaillierter gezeichnete Einzelheit aus einer der schematischen Fig. 1 oder 2. Der Verdrängungskörper 4 wird hier durch ein nach unten offenes Hohlprofil aus Gitterwerk 10 und einer Kunststoffolie 11 gebildet. Das Gitterwerk 10 besteht aus einer in die Form des Verdrängungskörpers 4 gebrachte Baustahlmatte. Die Kunststoffolie 11 wurde durch Aufschrumpfen befestigt. Der Verdrängungskörper 4 weist einen folienfreien Fußbereich 12 auf. Der Fußbereich 12 wurde zwischen den Basis-Längsstab und den zusätzlichen Längsstab 5"a durch die Bewehrungsmatte 5 gesteckt. Falls erforderlich, kann der Verdrängungskörper 4 in dieser Stellung entweder durch Draht oder durch Schweißen festgelegt werden. Die zusätzlichen Längsstäbe 5"a können beid- oder einseitig jedes ebenen Bereiches 6 angebracht sein, der einen Verdrängungskörper 4 aufnimmt. Der Abstand zum benachbarten Basis-Längsstab richtet sich nach den Abmessungen des Fußberiches 12 bzw. anderer einzurastender Wandungen oder Füße der Verdrängungskörper 4. Der zusätzliche Längsstab 5"a kann weiterhin auch auf der dem Verdrängungskörper zugewandten Seite der Querstäbe 5b aufliegen. Auf diese Weise kann auch ein Hohlprofil-Verdrängungskörper mit nicht durchbrochener Wandung festgehalten werden.5 shows a more detailed detail drawn from one of the schematic FIGS. 1 or 2. The displacement body 4 is formed here by a hollow profile made of latticework 10 and a plastic film 11 that is open at the bottom. The latticework 10 consists of a structural steel mat brought into the shape of the displacer 4. The plastic film 11 was attached by shrinking on. The displacement body 4 has a film-free foot region 12. The foot area 12 was inserted between the basic longitudinal bar and the additional longitudinal bar 5 "a through the reinforcement mat 5. If necessary, the displacement body 4 can be fixed in this position either by wire or by welding. The additional longitudinal bars 5" a can be or be attached to one side of each flat area 6, which receives a displacement body 4. The distance to the adjacent basic longitudinal bar depends on the dimensions of the foot area 12 or other walls or feet of the displacement bodies 4 to be snapped in. The additional longitudinal bar 5 "a can also rest on the side of the transverse bars 5b facing the displacement body. In this way also a hollow profile displacement body with an unbroken wall can be held.

Die Erfindung ist nicht auf die beschriebenen Ausführungsformen beschränkt. So kann z. B. die Form der Erhebungen variiert werden, sofern dies zweckmäßig erscheint. Weiterhin muß der zick-zack-förmig verlaufende Längsstab nicht unbedingt durch Biegen hergestellt sein. Der Verdrängungskörper aus Gitterwerk und Kunststoff-Folie kann auch ohne den folienfreien Fußbereich verwendet werden. In diesem Fall wird er auf den ebenen Bereich aufgesetzt und beispielsweise mittels Draht gehalten.The invention is not limited to the described embodiments. So z. B. the form of the surveys can be varied, if this appears appropriate. Furthermore, the zigzag longitudinal rod does not necessarily have to be made by bending. The displacer made of latticework and plastic film can also be used without the film-free foot area. In this case, it is placed on the flat area and held, for example, with wire.

Claims (7)

1. Armoured concrete building slab comprising at least one armouring grid (5) and at least one cavity formed in the concrete by means of a displacement body (4) and limited on at least two sides thereof by likewise armoured concrete ribs (3), characterized in that the armouring of said concrete ribs (3) comprises raised portions (7) formed in said armouring grid (5) at spaced locations, the dimensions of the planar portion (6) between each two raised portions (7) approximately corresponding to the dimension of said displacement body (4) transversely of said raised portions (7), so that said displacement body (4) is received between said raised portions (7) in a substantially non-shiftable manner, said displacement body consisting of a downwards opening hollow profile formed of a grid structure (10) of metal rods, and a plastic sheet material (11) covering the side of said grid structure facing towards the concrete.
2. A building slab according to claim 1, characterized in that said raised portions (7) are formed as upstanding folds extending over the full length of the armouring grid (5) and being of triangular cross-sectional shape, the lateral sides of said upstanding fold being each provided with a zigzag- or wave-shaped longitudinal rod (5a) meandering between the apex and a respective base edge.
3. A building slab according to any of claims 1 and 2, characterized in that said raised portions (7) are connected to a second armouring grid (8) disposed above said displacement body (4).
4. A building slab according to claim 3, characterized in that the bent portions of the two longitudinal rods (5a) of a raised portion (7) pointing towards the apex abut one another at said apex.
5. A building slab according to any of claims 1 to 4, characterized in that at least one reinforcing strut (9) is provided to extend across the bottom side of the raised portion (7) and fixedly connected to planar portions (6) disposed on both sides of said raised portion (7).
6. A building slab according to any of claims 1 to 5, characterized in that a further longitudinal rod (5"a) is disposed on said planar portion (6) parallel to and at a small distance from the longitudinal rod of the base edge of at least one adjacent raised portion (7).
7. A building slab according to any of claims 1 to 6, characterized in that the foot portion (12) of the hollow profile is free of plastic sheet material (11).
EP81106066A 1981-05-18 1981-08-03 Building slab Expired EP0066647B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81106066T ATE10525T1 (en) 1981-05-18 1981-08-03 BUILDING PLATE.

Applications Claiming Priority (2)

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DE3119703 1981-05-18
DE3119703 1981-05-18

Publications (2)

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EP0066647A1 EP0066647A1 (en) 1982-12-15
EP0066647B1 true EP0066647B1 (en) 1984-11-28

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EP (1) EP0066647B1 (en)
JP (1) JPS587052A (en)
AT (1) ATE10525T1 (en)
DE (1) DE3167456D1 (en)
ZA (1) ZA823311B (en)

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US5667619A (en) 1992-11-06 1997-09-16 Kimberly-Clark Worldwide, Inc. Method for making a fibrous laminated web
CN100476103C (en) * 2003-05-06 2009-04-08 邱则有 Cast-in-place steel reinforced concrete hollow slab

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AT406064B (en) 1993-06-02 2000-02-25 Evg Entwicklung Verwert Ges COMPONENT
AU673446B2 (en) * 1993-08-12 1996-11-07 Rapid Building Systems Pty Ltd Means and method for the manufacture of building panels
AT407411B (en) * 1994-02-17 2001-03-26 Avi Alpenlaendische Vered REINFORCEMENT BODY FOR A ROCK Ceiling made of cast concrete
AT410688B (en) * 1996-11-21 2003-06-25 Evg Entwicklung Verwert Ges COMPONENT
ES2158820B1 (en) * 1999-12-10 2002-03-16 Autoportantes Valdeorras S L UNIDIRECTIONAL FORGED WITH PRE-MANUFACTURED PREFABRICATED PANELS OF ARMED CONCRETE.
DE10211804B4 (en) * 2002-03-16 2006-04-13 Syspro-Gruppe Betonbauteile E.V. Cavity-free prefabricated panel component
NO339881B1 (en) * 2015-05-27 2017-02-13 Polybo As Cover element and method of making the same
CN107165320A (en) * 2016-03-07 2017-09-15 王清 A kind of netted box-shaped Cavity structural member of special type closing in for the built-in filling of cast-in-situ hollow building roof
WO2017217863A1 (en) * 2016-06-14 2017-12-21 Polybo As A building structure connecting means and a method of using same
NO342534B1 (en) * 2016-06-14 2018-06-11 Polybo As A connecting means of a building structure and a method of using same
DE102017119087A1 (en) 2017-08-21 2019-02-21 Deutsches Zentrum für Luft- und Raumfahrt e.V. Displacement body made of high-performance aerosol concrete
CN110219408A (en) * 2019-07-04 2019-09-10 阮蕾 A kind of small buoyancy filler part
CN111502093A (en) * 2020-04-24 2020-08-07 上海核工程研究设计院有限公司 Prefabricated steel plate concrete hollow floor slab and construction method thereof
CN111502092A (en) * 2020-04-24 2020-08-07 上海核工程研究设计院有限公司 Steel plate concrete composite hollow floor slab and construction method thereof
CN115045436B (en) * 2022-06-21 2023-12-05 山东万斯达科技股份有限公司 Steel pipe rack combined plate and manufacturing method thereof

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Cited By (3)

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US5667619A (en) 1992-11-06 1997-09-16 Kimberly-Clark Worldwide, Inc. Method for making a fibrous laminated web
CN100476103C (en) * 2003-05-06 2009-04-08 邱则有 Cast-in-place steel reinforced concrete hollow slab
CN100476102C (en) * 2003-05-06 2009-04-08 邱则有 Cast-in-place steel reinforced concrete hollow slab

Also Published As

Publication number Publication date
EP0066647A1 (en) 1982-12-15
ATE10525T1 (en) 1984-12-15
JPH0246735B2 (en) 1990-10-17
ZA823311B (en) 1983-03-30
JPS587052A (en) 1983-01-14
DE3167456D1 (en) 1985-01-10

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