EP0057372B1 - Hollow floor - Google Patents

Hollow floor Download PDF

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Publication number
EP0057372B1
EP0057372B1 EP82100352A EP82100352A EP0057372B1 EP 0057372 B1 EP0057372 B1 EP 0057372B1 EP 82100352 A EP82100352 A EP 82100352A EP 82100352 A EP82100352 A EP 82100352A EP 0057372 B1 EP0057372 B1 EP 0057372B1
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EP
European Patent Office
Prior art keywords
floor
hollow
supporting feet
hollow floor
feet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82100352A
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German (de)
French (fr)
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EP0057372A1 (en
Inventor
Wolfgang Radtke
György Dipl.-Ing. Borbely
Sebald Dipl.-Ing. Pallhorn
Erich Dipl.-Volkswirt Höllfritsch
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Cessione norina Bautechnik - E - Goldbach Gmb GmbH
Original Assignee
Schmidt Reuter Ingenieurgesellschaft mbH and Co KG
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Application filed by Schmidt Reuter Ingenieurgesellschaft mbH and Co KG filed Critical Schmidt Reuter Ingenieurgesellschaft mbH and Co KG
Priority to AT82100352T priority Critical patent/ATE12804T1/en
Publication of EP0057372A1 publication Critical patent/EP0057372A1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/024—Sectional false floors, e.g. computer floors
    • E04F15/02405—Floor panels
    • E04F15/02417—Floor panels made of box-like elements
    • E04F15/02423—Floor panels made of box-like elements filled with core material
    • E04F15/02429—Floor panels made of box-like elements filled with core material the core material hardening after application
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
    • E04F15/123—Lost formworks for producing hollow floor screed layers, e.g. for receiving installations, ducts, cables

Definitions

  • the invention relates to a hollow floor with an upper floor resting on supporting feet on a sub-floor and forming a cavity with the lower floor, to which the supporting feet in the form of circular knobs which have filled with the material of the upper floor and form a smooth coating are molded on, whereby the support feet form a vault-like structure without flat side surfaces and continuously widen upwards and merge into the horizontal top floor without kinks.
  • a known hollow floor of this type (US-A-3 442 058) has support feet which are formed by pouring molded parts with screed. These molded parts consist of pre-cast concrete, plaster, glazed clay or the like, in any case from a rigid material. The molded parts are open on the undersides of the support feet. If a hollow floor is made from such molded parts, it can happen that the lower ends of the individual molded parts do not or not fully stand on the sub-floor, because the sub-floor is either rough or uneven. This is particularly the case if the sub-floor consists of raw concrete. In such cases, the filled concrete swells out of the lower ends of the support feet and forms a base with an irregular, rough outside on the sub-floor.
  • a hollow floor in which the molded parts forming the feet consist of a plastic and are closed at the bottom (DE-C-1 123 817).
  • the molded parts have flat side surfaces to form a honeycomb structure.
  • the molded parts serve as a moisture barrier, as a tub against groundwater and to create an air cushion for thermal insulation. Your feet don't hit the floor at almost a right angle.
  • the top shelf always consists of plates that can be picked up individually.
  • the invention has for its object to form a hollow floor of the type mentioned in such a way that it is suitable for the subsequent retraction of cables, hose lines and other lines without them tightening at deflection points on the support feet.
  • the material from which the formwork is made is so flexible and supple that it adapts to any unevenness in the sub-floor when exposed to screed.
  • This surface material is covered with the plastic mass, which not only fills the bulges of the surface material, which are directed downwards and later form the support feet, but also forms the top floor.
  • the leveling is carried out on the surface of the top floor and not on the support feet supporting the top floor. This eliminates the leveling work otherwise required.
  • the formwork made of the sheet material prevents the flowable mass from penetrating. It must therefore have such a tightness that it forms the underside of the top floor and the outside of the support feet without a substantial amount of the flowable mass getting into the cavity formed between the surface material and the underbody.
  • the flowable mass preferably consists of a self-leveling suspension which automatically forms an exactly horizontal and smooth surface. However, the flowable mass can also have a paste-like consistency, which, however, requires mechanical smoothing.
  • the surface material remains like a lost formwork on the top floor and the support feet and forms a coating on the wall of the cavity.
  • This smooth coating preferably consists of a relatively hard pressure distribution layer, which is arranged on a relatively soft insulation layer.
  • the insulation layer is used for heat and sound insulation. It consists of a soft material, such as foam or fiberglass panels. This soft material, which provides good thermal insulation and sound insulation downwards, has a relatively soft surface. It is therefore covered with the pressure distribution layer on which the feet of the top floor stand. The pressure of the feet is distributed over a larger area of the insulation layer over the pressure distribution layer so that it does not suffer any local impressions.
  • the pressure distribution layer is provided with holes for sound absorption.
  • the airborne sound penetrates through the holes into the insulation layer and is absorbed in it. In this way, multiple reflections of the airborne sound in the cavity are avoided.
  • the profiled surface material can be in the form of a sheet or in sheet form, the sheets or sheets, however, having to be connected in a sealing manner in such a way that a continuous casting mold is created for the locally cast, continuous top floor. Therefore, the edges of the surface material are usually designed as interlocking or opposable straight strips.
  • the bendable surface material can be reinforced in some areas by further meltable plastics or combined with metal inserts to improve heat conduction and stability.
  • the hollow floor shown in section in FIG. 1 consists of the sub-floor 10, 11, 12 and the upper floor 13 arranged above it Metal sheet 12 for better load distribution.
  • the metal sheet 12 has holes.
  • a mold 14 made of a deep-drawn plastic film is first placed on the sub-floor 10, 11, 12 to form the top floor 13.
  • Form 14 is self-supporting. It has numerous knobs or ribs 15 projecting downwards. The undersides of the ribs 15 rest on the sheet 12.
  • the shape 14 is flexible or bendable overall, so that it adapts to any unevenness in the underbody 10, 11, 12.
  • edges 16 of the mold 14 are designed as strips with a uniform profile that lie at the level of the raised surface areas of the mold 14.
  • the edges 16 have a groove-like bulge, so that the bulges of two adjoining molds 14 can be inserted into one another in a sealing manner.
  • the edges 16 can also be connected to one another with an adhesive or by welding, so that the plates provide an overall sealing mold for the top 13.
  • Filling bodies 25 made of rolled gravel are filled into the knobs or ribs 15 and protrude beyond the shape 14 into the area of the later upper floor.
  • the top floor 13 is produced from a self-leveling screed which is applied to the mold 14 and thereby encloses and embeds the filler 25.
  • the support feet 17 are formed in the ribs 15 of the mold 14 and a layer 18 covering the entire mold 14 is formed over it forms. The height compensation takes place in that the layer 18 is given different thicknesses at different points if necessary.
  • the mold 14 When the liquid screed has hardened, the mold 14 remains in the hollow floor, so that it forms a smooth coating which closely surrounds the support feet 17. If electrical cables or other pipelines are introduced into the cavity, they slide along the coating so that they do not come into contact with a relatively rough concrete or mortar surface.
  • FIGS. 3 and 3 A hollow floor is shown in FIGS. 3 and 3, in which the feet 17 are also circular knobs, each of which has the same distances from one another.
  • the support feet 17 are arranged in rows and the support feet of two rows are each in a gap. This creates a uniform load-bearing structure and load distribution. In addition, straight channels for the passage of air are avoided within the hollow floor. The air is swirled and branched at the support feet 17, so that the heat transfer to the top floor 13 is improved.
  • a vaulted structure i. H. the diameter of the support feet 17 widens upwards, so that each support foot - seen in cross section - merges into the adjacent support foot in the form of an arc.
  • This vaulted structure also increases the load-bearing capacity of the top floor 13, so that the continuous top layer 18 can be made relatively thin.
  • This film consists of some areas of the hollow floor a plastic film and in other areas of the hollow floor made of a metal foil or a combined metal / plastic film in order to influence the heat transfer from the cavity into the material of the top floor 13.

Abstract

A cavity floor is formed by placing on a structural floor bottom a flexible floor mold which has leg forming portions arranged in an array with generally planar portions extending between and surrounding the leg forming portions. A flowable substance is applied over the mold, which subsequently hardens to form an upper floor having a plurality of legs defined by the leg forming portions, with a cavity region therebetween. The planar portions of the flexible floor mold permit adjacent leg forming portions each separately to contact the floor bottom under the weight of the applied flowable substance, even if the floor bottom is uneven.

Description

Die Erfindung betrifft einen Hohlboden mit einer über Tragfüße auf einem Unterboden ruhenden und mit dem Unterboden einen Hohlraum bildenden Oberboden, dem die Tragfüße in Form kreisförmiger Noppen, welche mit dem Material des Oberbodens ausgefüllte, eine glatte Beschichtung bildende Formteile aufweisen, fest angeformt sind, wobei die Tragfüße eine gewölbeartige Struktur ohne ebene Seitenflächen bilden und sich kontinuierlich nach oben erweiternd, knickfrei in den horizontalen Oberboden übergehen.The invention relates to a hollow floor with an upper floor resting on supporting feet on a sub-floor and forming a cavity with the lower floor, to which the supporting feet in the form of circular knobs which have filled with the material of the upper floor and form a smooth coating are molded on, whereby the support feet form a vault-like structure without flat side surfaces and continuously widen upwards and merge into the horizontal top floor without kinks.

Ein bekannter Hohlboden dieser Art (US-A-3 442 058) weist Tragfüße auf, die durch Ausgießen von Formteilen mit Estrich gebildet werden. Diese Formteile bestehen aus vorgegossenem Beton, Gips, glasiertem Ton od. dgl., also in jedem Fall aus einem starren Material. Die Formteile sind an den Unterseiten der Tragfüße offen. Wenn aus solchen Formteilen ein Hohlboden hergestellt wird, kann es geschehen, daß die unteren Enden der einzelnen Formteile nicht oder nicht voll auf dem Unterboden aufstehen, weil dieser entweder rauh oder uneben ist. Dies ist insbesondere dann der Fall, wenn der Unterboden aus Rohbeton besteht. In solchen Fällen quillt der eingefüllte Beton aus den unteren Enden der Tragfüße heraus und bildet auf dem Unterboden einen Sockel mit unregelmäßiger rauher Außenseite. Bei dem bekannten Doppelboden werden vor dem Gießen des Oberbodens Rohre verlegt, die anschließend von dem Estrich des Oberbodens umschlossen werden. Diese Rohre dienen zur Aufnahme von Kabeln und Leitungen. Sie führen jeweils nur zu ganz bestimmten Stellen, so daß es nicht möglich ist, Leitungen nachträglich zu beliebigen Stellen zu verlegen. Bei dem bekannten Hohlboden bilden die Tragfüße eine Gewölbestruktur und ihr Querschnitt verringert sich kontinuierlich nach unten hin. Die Wände der Tragfüße stoßen unter einem Aufsitzwinkel von ca. 60° auf den Unterboden.A known hollow floor of this type (US-A-3 442 058) has support feet which are formed by pouring molded parts with screed. These molded parts consist of pre-cast concrete, plaster, glazed clay or the like, in any case from a rigid material. The molded parts are open on the undersides of the support feet. If a hollow floor is made from such molded parts, it can happen that the lower ends of the individual molded parts do not or not fully stand on the sub-floor, because the sub-floor is either rough or uneven. This is particularly the case if the sub-floor consists of raw concrete. In such cases, the filled concrete swells out of the lower ends of the support feet and forms a base with an irregular, rough outside on the sub-floor. In the known raised floor, pipes are laid before the top floor is poured, which are then enclosed by the screed of the top floor. These pipes are used to hold cables and wires. They only lead to very specific points, so that it is not possible to subsequently route cables to any point. In the known hollow floor, the support feet form a vaulted structure and their cross section decreases continuously downwards. The walls of the support feet hit the sub-floor at an angle of about 60 °.

Bekannt ist ferner ein Hohlboden, bei dem die die Füße bildenden Formteile aus einem Kunststoff bestehen und unten geschlossen sind (DE-C-1 123 817). Die Formteile haben ebene Seitenflächen, um eine wabenförmige Struktur zu bilden. Die Formteile dienen als Feuchtigkeitssperre, als Wanne gegen Grundwasser und zur Erzeugung eines Luftpolsters zur thermischen Isolierung. Ihre Füße stoßen nicht annähernd rechtwinklig auf den Boden.Also known is a hollow floor in which the molded parts forming the feet consist of a plastic and are closed at the bottom (DE-C-1 123 817). The molded parts have flat side surfaces to form a honeycomb structure. The molded parts serve as a moisture barrier, as a tub against groundwater and to create an air cushion for thermal insulation. Your feet don't hit the floor at almost a right angle.

Es ist grundsätzlich bekannt, den Hohlboden eines Doppelbodens zur Verlegung von Kabeln und Rohren zu benutzen. Hierbei besteht der Oberboden stets aus Platten, die einzeln aufgenommen werden können.It is generally known to use the hollow floor of a double floor for laying cables and pipes. The top shelf always consists of plates that can be picked up individually.

Der Erfindung liegt die Aufgabe zugrunde, einen Hohlboden der eingangs genannten Art so auszubilden, daß er für das nachträgliche Einziehen von Kabeln, Schlauchleitungen und anderen Leitungen geeignet ist, ohne daß sich diese an Umlenkstellen an den Tragfüßen festziehen.The invention has for its object to form a hollow floor of the type mentioned in such a way that it is suitable for the subsequent retraction of cables, hose lines and other lines without them tightening at deflection points on the support feet.

Diese Aufgabe wird durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale gelöst.This object is achieved by the features specified in the characterizing part of claim 1.

Wenn bei einem Hohlboden, bei dem der Oberboden zusammen mit den Tragfüßen durch Ausgießen von Formteilen hergestellt ist und nicht einzelne Teile des Oberbodens nachträglich entfernt werden können, Kabel, Leitungen u. dgl. eingezogen werden sollen, besteht die Gefahr, daß die Leitungen sich an den Tragfüßen reiben oder verklemmen. Insbesondere wenn die Leitung im Hohlboden nicht geradlinig verlegt werden kann, können Verhakungen, Verklemmungen und Umlenkreibungen an den Tragfüßen des Hohlbodens auftreten. Dadurch, daß nach der Erfindung die Umfangswandungen der Füße nahezu senkrecht auf den Unterboden stoßen, werden Keile und Zwickel, an denen sich Leitungen während des Einziehens verklemmen könnten, vermieden. Durch die gewölbeartige Ausbildung der Hohlräume wird erreicht, daß keine ebenen Flächen vorhanden sind, an denen ein Leitungsstau auftreten könnte. Das freie Ende einer eingeschobenen Leitung wird beim Anstoßen stets von einer abgerundeten Fläche geführt. Da die Formteile der Füße an ihrer Unterseite vollständig geschlossen sind, wird verhindert, daß Material des Oberbodens aus den Füßen austreten und im Fußbereich eine rauhe Oberfläche bilden kann.If in a hollow floor, in which the top floor is made together with the support feet by pouring molded parts and individual parts of the top floor cannot be subsequently removed, cables, lines and the like. Like. to be drawn in, there is a risk that the lines rub or jam on the support feet. In particular, if the line in the hollow floor cannot be laid in a straight line, hooking, jamming and deflection friction can occur on the support feet of the hollow floor. Characterized in that according to the invention, the peripheral walls of the feet abut almost perpendicularly on the sub-floor, wedges and gussets, on which lines could jam during the retraction, are avoided. The vault-like design of the cavities ensures that there are no flat surfaces on which a line jam could occur. The free end of an inserted line is always guided by a rounded surface when it is pushed. Since the molded parts of the feet are completely closed on their underside, it is prevented that material of the upper floor can escape from the feet and form a rough surface in the foot area.

Das Material, aus dem die Schalung besteht, ist so biegsam und geschmeidig, daß es sich bei Belastung mit Estrich etwaigen Unebenheiten des Unterbodens anpaßt. Dieses Flächenmaterial wird mit der plastischen Masse bedeckt, die nicht nur die nach unten gerichteten, später die Tragfüße bildenden Ausbauchungen des Flächenmaterials ausfüllt, sondern den Oberboden bildet. Die Nivellierung wird an der Oberfläche des Oberbodens durchgeführt und nicht an den den Oberboden tragenden Tragfüßen. Damit entfallen die sonst erforderlichen Nivellierungsarbeiten.The material from which the formwork is made is so flexible and supple that it adapts to any unevenness in the sub-floor when exposed to screed. This surface material is covered with the plastic mass, which not only fills the bulges of the surface material, which are directed downwards and later form the support feet, but also forms the top floor. The leveling is carried out on the surface of the top floor and not on the support feet supporting the top floor. This eliminates the leveling work otherwise required.

Die aus dem Flächenmaterial bestehende Schalung verhindert ein Hindurchdringen der fließfähigen Masse. Sie muß daher eine solche Dichtigkeit haben, daß sie die Unterseite des Oberbodens und die Außenseite der Tragfüße formt, ohne daß eine wesentliche Menge der fließfähigen Masse in den zwischen dem Flächenmaterial und dem Unterboden gebildeten Hohlraum gelangt. Vorzugsweise besteht die fließfähige Masse aus einer selbstnivellierenden Suspension, die von selbst eine exakt horizontale und glatte Oberfläche bildet. Die fließfähige Masse kann jedoch auch eine breiförmige Konsistenz haben, was allerdings eine mechanische Glättung erfordert. Das Flächenmaterial verbleibt nach Art einer verlorenen Schalung an dem Oberboden und den Tragfüßen und bildet eine Beschichtung der Wand des Hohlraumes.The formwork made of the sheet material prevents the flowable mass from penetrating. It must therefore have such a tightness that it forms the underside of the top floor and the outside of the support feet without a substantial amount of the flowable mass getting into the cavity formed between the surface material and the underbody. The flowable mass preferably consists of a self-leveling suspension which automatically forms an exactly horizontal and smooth surface. However, the flowable mass can also have a paste-like consistency, which, however, requires mechanical smoothing. The surface material remains like a lost formwork on the top floor and the support feet and forms a coating on the wall of the cavity.

Ebenso kann zur Verringerung der Reibung für einzuziehende Kabel, Schläuche od. dgl. der Unterboden eine glatte Beschichtung aufweisen. Diese glatte Beschichtung besteht vorzugsweise aus einer relativ harten Druckverteilschicht, die auf einer relativ weichen Dämmschicht angeordnet ist. Die Dämmschicht dient zur Wärme- und Schallisolierung. Sie besteht aus einem weichen Material, wie Schaumstoff oder Glasfaserplatten. Dieses weiche Material, das eine gute Wärmeisolierung und Schalldämmung nach unten hin bewirkt, hat aber eine relativ weiche Oberfläche. Es ist daher mit der Druckverteilschicht bedeckt, auf der die Füße des Oberbodens stehen. Der Druck der Füße wird über die Druckverteilschicht auf jeweils eine größere Fläche der Dämmschicht verteilt, so daß diese keine örtlichen Eindrückungen erleidet.Likewise, to reduce friction for cables, hoses or the like to be pulled in. Un have a smooth coating. This smooth coating preferably consists of a relatively hard pressure distribution layer, which is arranged on a relatively soft insulation layer. The insulation layer is used for heat and sound insulation. It consists of a soft material, such as foam or fiberglass panels. This soft material, which provides good thermal insulation and sound insulation downwards, has a relatively soft surface. It is therefore covered with the pressure distribution layer on which the feet of the top floor stand. The pressure of the feet is distributed over a larger area of the insulation layer over the pressure distribution layer so that it does not suffer any local impressions.

Um zu verhindern, daß sich ein Luftschall, der beispielsweise durch strömende Luft hervorgerufen wird, im Hohlboden fortsetzt, ist die Druckverteilschicht mit Löchern zur Schallabsorption versehen. Der Luftschall dringt duch die Löcher hindurch in die Dämmschicht ein und wird in dieser absorbiert. Auf diese Weise werden Vielfachreflektionen des Luftschalls im Hohlraum vermieden.In order to prevent airborne sound, which is caused, for example, by flowing air, from continuing in the hollow floor, the pressure distribution layer is provided with holes for sound absorption. The airborne sound penetrates through the holes into the insulation layer and is absorbed in it. In this way, multiple reflections of the airborne sound in the cavity are avoided.

Das profilierte Flächenmaterial kann als Bahnenware oder in Plattenform vorliegen, wobei die Bahnen oder Platten jedoch abdichtend so verbunden werden müssen, daß eine durchgehende Gießform für den ortgegossenen durchgehenden Oberboden entsteht. Daher sind die Ränder des Flächenmaterials in der Regel als ineinandergreifende oder gegeneinanderlegbare geradlinige Leisten ausgeführt. Das biegbare Flächenmaterial kann bereichsweise durch weitere ausschmelzbare Kunststoffe armiert werden oder mit Metalleinlagen zur Verbesserung der Wärmeleitung und Stabilität kombiniert werden.The profiled surface material can be in the form of a sheet or in sheet form, the sheets or sheets, however, having to be connected in a sealing manner in such a way that a continuous casting mold is created for the locally cast, continuous top floor. Therefore, the edges of the surface material are usually designed as interlocking or opposable straight strips. The bendable surface material can be reinforced in some areas by further meltable plastics or combined with metal inserts to improve heat conduction and stability.

Im folgenden werden unter Bezugnahme auf die Zeichnungen Ausführungsbeispiele der Erfindung näher erläutert. Es zeigt

  • Fig. 1 einen Querschnitt durch einen Hohlboden,
  • Fig. 2 einen Querschnitt durch eine andere Ausführungsform des Hohlbodens und
  • Fig. 3 in Draufsicht die Anordnung der Tragfüße bei dem Hohlboden nach Fig. 2.
Exemplary embodiments of the invention are explained in more detail below with reference to the drawings. It shows
  • 1 shows a cross section through a hollow floor,
  • Fig. 2 shows a cross section through another embodiment of the hollow floor and
  • 3 shows a top view of the arrangement of the support feet in the hollow floor according to FIG. 2.

Der in Fig. 1 im Schnitt dargestellte Hohlboden besteht aus dem Unterboden 10, 11, 12 und dem darüber angeordneten Oberboden 13. Der Unterboden 10, 11, 12 besteht aus einer Betonplatte 10, einer darüber angeordneten Wärmedämmschicht 11 und einem über der Wärmedämmschicht 11 angeordneten Metallblech 12 zur besseren Lastverteilung. Das Metallblech 12 weist Löcher auf.The hollow floor shown in section in FIG. 1 consists of the sub-floor 10, 11, 12 and the upper floor 13 arranged above it Metal sheet 12 for better load distribution. The metal sheet 12 has holes.

Auf den Unterboden 10, 11, 12 wird zur Bildung des Oberbodens 13 zunächst eine Form 14 aus einer tiefgezogenen Kunststoffolie aufgelegt.A mold 14 made of a deep-drawn plastic film is first placed on the sub-floor 10, 11, 12 to form the top floor 13.

Die Form 14 ist selbsttragend. Sie weist zahlreiche nach unten vorstehende Noppen oder Rippen 15 auf. Die Unterseiten der Rippen 15 liegen auf dem Blech 12 auf. Die Form 14 ist insgesamt flexibel bzw. biegbar, so daß sie sich etwaigen Unebenheiten des Unterbodens 10, 11, 12 anpaßt.Form 14 is self-supporting. It has numerous knobs or ribs 15 projecting downwards. The undersides of the ribs 15 rest on the sheet 12. The shape 14 is flexible or bendable overall, so that it adapts to any unevenness in the underbody 10, 11, 12.

Die Ränder 16 der Form 14 sind als durchgehend gleichförmig profilierte Leisten ausgebildet, die auf dem Niveau der erhabenen Flächenbereiche der Form 14 liegen. Die Ränder 16 weisen eine nutartige Ausbauchung auf, so daß die Ausbauchungen zweier aneinander angrenzender Formen 14 abdichtend ineinandergesetzt werden können. Die Ränder 16 können ferner mit einem Kleber oder durch Verschweißen miteinanderverbunden werden, so daß die Platten eine insgesamt abdichtende Gießform für den Oberboden 13 ergeben.The edges 16 of the mold 14 are designed as strips with a uniform profile that lie at the level of the raised surface areas of the mold 14. The edges 16 have a groove-like bulge, so that the bulges of two adjoining molds 14 can be inserted into one another in a sealing manner. The edges 16 can also be connected to one another with an adhesive or by welding, so that the plates provide an overall sealing mold for the top 13.

In den Noppen oder Rippen 15 sind Füllkörper 25 aus Rollkies eingefüllt, die über die Form 14 hinaus in den Bereich des späteren Oberbodens hineinragen.Filling bodies 25 made of rolled gravel are filled into the knobs or ribs 15 and protrude beyond the shape 14 into the area of the later upper floor.

Der Oberboden 13 wird aus einem Fließestrich erzeugt, der auf die Form 14 aufgebracht wird, und dabei die Füllkörper 25 umschließt und einbettet. Dabei werden in den Rippen 15 der Form 14 die Tragfüße 17 gebildet und über diesen entsteht eine die gesamte Form 14 bedeckende Schicht 18. Die Oberfläche des Fließestirchs wird erforderlichenfalls glattgestrichen, so daß sie unabhängig von Unebenheiten des Unterbodens 10, 11, 12 eine horizontale Fläche bildet. Der Höhenausgleich erfolgt also dadurch, daß die Schicht 18 an verschiedenen Stellen erforderlichenfalls unterschiedliche Stärken erhält.The top floor 13 is produced from a self-leveling screed which is applied to the mold 14 and thereby encloses and embeds the filler 25. In this case, the support feet 17 are formed in the ribs 15 of the mold 14 and a layer 18 covering the entire mold 14 is formed over it forms. The height compensation takes place in that the layer 18 is given different thicknesses at different points if necessary.

Wenn der Fließestrich erhärtet ist, verbleibt die Form 14 in dem Hohlboden, so daß sie eine die Tragfüße 17 eng umschließende glatte Beschichtung bildet. Werden in den Hohlraum Elektrokabel oder andere Rohrleitungen eingebracht, gleiten diese entlang der Beschichtung, so daß sie nicht in Kontakt mit einer relativ rauhen Beton- oder Mörtelfläche kommen.When the liquid screed has hardened, the mold 14 remains in the hollow floor, so that it forms a smooth coating which closely surrounds the support feet 17. If electrical cables or other pipelines are introduced into the cavity, they slide along the coating so that they do not come into contact with a relatively rough concrete or mortar surface.

In den Fig. und 3 ist ein Hohlboden dargestellt, bei dem die Füße 17 ebenfalls kreisförmige Noppen sind, die jeweils gleiche Abstände voneinander haben. Die Tragfüße 17 sind in Reihen angeordnet und die Tragfüße zweier Reihen liegen jeweils auf Lücke. Dadurch entsteht eine gleichmäßige Tragstruktur und Lastverteilung. Außerdem werden innerhalb des Hohlbodens geradlinige Kanäle für den Luftdurchtritt vermieden. Die Luft wird an den Tragfüßen 17 verwirbelt und verzweigt, so daß der Wärmeübergang zum Oberboden 13 verbessert wird. Zwischen den Tragfüßen 17 befindet sich eine Gewölbestruktur, d. h. der Durchmesser der Tragfüße 17 erweitert sich nach oben hin, so daß jeder Tragfuß - im Querschnitt gesehen - in Form eines Bogens in den benachbarten Tragfuß übergeht. Durch diese Gewölbestruktur wird ebenfalls die Tragfähigkeit des Oberbodens 13 erhöht, so daß die durchgehende Oberschicht 18 relativ dünne ausgebildet werden kann.A hollow floor is shown in FIGS. 3 and 3, in which the feet 17 are also circular knobs, each of which has the same distances from one another. The support feet 17 are arranged in rows and the support feet of two rows are each in a gap. This creates a uniform load-bearing structure and load distribution. In addition, straight channels for the passage of air are avoided within the hollow floor. The air is swirled and branched at the support feet 17, so that the heat transfer to the top floor 13 is improved. Between the support feet 17 there is a vaulted structure, i. H. the diameter of the support feet 17 widens upwards, so that each support foot - seen in cross section - merges into the adjacent support foot in the form of an arc. This vaulted structure also increases the load-bearing capacity of the top floor 13, so that the continuous top layer 18 can be made relatively thin.

Die Folie 26, die die verlorene Schalung für den Oberboden 13 und die Tragfüße 17 nach Fig. 3 bildet, bleibt Bestandteil des Hohlbodens, so daß sie die Tragfüße 17 auch nach Fertigstellung des Hohlbodens umgibt. Diese Folie besteht in einigen Bereichen des Hohlbodens aus einer Kunststoffolie und in anderen Bereichen des Hohlbodens aus einer Metallfolie oder einer kombinierten Metall/Kunststoff-Folie, um den Wärmeübergang von dem Hohlraum in das Material des Oberbodens 13 hinein zu beeinflussen.The film 26, which forms the lost formwork for the top floor 13 and the support feet 17 according to FIG. 3, remains part of the hollow floor, so that it surrounds the support feet 17 even after completion of the hollow floor. This film consists of some areas of the hollow floor a plastic film and in other areas of the hollow floor made of a metal foil or a combined metal / plastic film in order to influence the heat transfer from the cavity into the material of the top floor 13.

Claims (4)

1. Hollow floor comprising an upper floor (13) which rests with supporting feet on a bottom floor to form therewith a hollow space and to which the supporting feet (17) are connected integrally in the form of circular knubs comprising molding elements (26) filled with the material of the upper floor and having a smooth coating, the supporting feet (17) forming a vault-like structure without plane lateral faces and being flared continuously in upward direction to pass over into the horizontal upper floor (13) without a bend, characterized in that the molding elements (26) consist of a flexible and soft material which, as it is filled in, adapts itself substantially to the contour of the bottom floor, the underside of the moldings being completely closed, and that the peripheral walls of the supporting feet (17) abut against the bottom floor (10,11,12) in a substantially perpendicular direction so that cables or the like may be introduced into the hollow space free of friction and without a wedge-type jamming at the supporting feet as well as without an accumulation of the conduits.
2. Hollow floor according to claim 1, characterized in that the bottom floor (10, 11, 12) comprises a smooth coating (12).
3. Hollow floor according to claim 1 or 2, characterized in that the bottom floor (10, 11, 12) comprises a relatively soft insulating layer (11) underlying a relatively hard pressure distributing layer (12).
4. Hollow floor according to claim 3, characterized in that the pressure distributing layer (12) comprises holes for sound absorption.
EP82100352A 1981-02-04 1982-01-19 Hollow floor Expired EP0057372B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82100352T ATE12804T1 (en) 1981-02-04 1982-01-19 CAVE FLOOR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3103632A DE3103632C2 (en) 1981-02-04 1981-02-04 Method for producing a hollow floor
DE3103632 1981-02-04

Publications (2)

Publication Number Publication Date
EP0057372A1 EP0057372A1 (en) 1982-08-11
EP0057372B1 true EP0057372B1 (en) 1985-04-17

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US (1) US4637184A (en)
EP (1) EP0057372B1 (en)
JP (2) JPS57184156A (en)
AT (1) ATE12804T1 (en)
BR (1) BR8200570A (en)
CA (1) CA1181215A (en)
DE (2) DE3103632C2 (en)
ES (1) ES509226A0 (en)
HK (1) HK102591A (en)
MX (1) MX155189A (en)

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Also Published As

Publication number Publication date
US4637184A (en) 1987-01-20
MX155189A (en) 1988-02-01
JPH0461143B2 (en) 1992-09-30
JPH0642153A (en) 1994-02-15
DE3263055D1 (en) 1985-05-23
EP0057372A1 (en) 1982-08-11
BR8200570A (en) 1982-12-07
ES8305080A1 (en) 1983-04-16
ES509226A0 (en) 1983-04-16
DE3103632C2 (en) 1986-12-18
JPH086447B2 (en) 1996-01-24
ATE12804T1 (en) 1985-05-15
DE3103632A1 (en) 1982-08-19
JPS57184156A (en) 1982-11-12
HK102591A (en) 1991-12-27
CA1181215A (en) 1985-01-22

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