EP0173095B1 - Cantilever composite slab for construction, in particular for double bottom - Google Patents

Cantilever composite slab for construction, in particular for double bottom Download PDF

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Publication number
EP0173095B1
EP0173095B1 EP85109559A EP85109559A EP0173095B1 EP 0173095 B1 EP0173095 B1 EP 0173095B1 EP 85109559 A EP85109559 A EP 85109559A EP 85109559 A EP85109559 A EP 85109559A EP 0173095 B1 EP0173095 B1 EP 0173095B1
Authority
EP
European Patent Office
Prior art keywords
composite building
trough
formations
knob
slab according
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
EP85109559A
Other languages
German (de)
French (fr)
Other versions
EP0173095A3 (en
EP0173095A2 (en
Inventor
Manfred Radtke
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.)
Mero Werke Dr Ing Max Mengeringhausen GmbH and Co
Original Assignee
Mero Werke Dr Ing Max Mengeringhausen GmbH and Co
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 Mero Werke Dr Ing Max Mengeringhausen GmbH and Co filed Critical Mero Werke Dr Ing Max Mengeringhausen GmbH and Co
Priority to AT85109559T priority Critical patent/ATE44065T1/en
Publication of EP0173095A2 publication Critical patent/EP0173095A2/en
Publication of EP0173095A3 publication Critical patent/EP0173095A3/en
Application granted granted Critical
Publication of EP0173095B1 publication Critical patent/EP0173095B1/en
Expired legal-status Critical Current

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Classifications

    • 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
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/024—Sectional false floors, e.g. computer floors
    • E04F15/02405—Floor panels
    • E04F15/02411—Floor panels with integrated feet
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/182—Underlayers coated with adhesive or mortar to receive the flooring
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/185—Underlayers in the form of studded or ribbed plates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23—Sheet including cover or casing
    • Y10T428/232—Encased layer derived from inorganic settable ingredient
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y10T428/24322—Composite web or sheet
    • Y10T428/24331—Composite web or sheet including nonapertured component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24562—Interlaminar spaces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities

Definitions

  • the invention relates to a self-supporting composite building board, in particular for raised floors, with an outer trough-shaped reinforcement for a flowable or pourable and curable filler with high compressive strength in the cured state, e.g. Anhydrite, concrete or the like
  • Such a self-supporting composite building board is known from DE-PS 2004101.
  • the trough-shaped reinforcement of this composite building board has a practically flat floor and its entire clear cross-section is filled with anhydrite, so that this composite building board has a correspondingly high weight.
  • a lower board weight is desired without sacrificing the numerous advantages of this composite building board, e.g. B. with high fire resistance, resilience, impact sound insulation, etc.
  • DE-OS 3103632 and 2930426 are also already known double floor panels with numerous knob-shaped projections on their undersides, but which are all supported on a sub-floor, that is, form a plurality of support feet.
  • These raised access floor panels may have a lower weight than the composite panel explained at the outset, but are not self-supporting, i. H. cannot be supported exclusively on their corners on footrests, because the necessary reinforcement is missing.
  • the invention has for its object to develop a cantilever composite building board of the type mentioned in such a way that it has a significantly lower weight and still retain the advantageous properties described above.
  • this object is achieved in that the trough-shaped reinforcement is provided on its underside with a large number of knob-like, filler-containing formations which are connected to one another by a floor element of high tensile strength.
  • the knob-like formations on the underside of the trough-shaped reinforcement means that a much smaller amount of filler is absorbed than from the corresponding lower clear cross-sectional area of the known trough-shaped reinforcement with practical flat floor.
  • the weight reduction achieved in this way with the finished composite building board compared to the prior art is approximately 40%.
  • the smaller amount of filler in the lower cross-sectional area of the composite building board (below the neutral board level) is meaningless, since when the composite building board is loaded only tensile stresses occur in this area anyway and the filler, e.g. B. anhydrite or concrete, is one with very low tensile strength and very low modulus of elasticity.
  • the high load-bearing capacity of the composite building board according to the invention is ensured by attaching a floor element of high tensile strength to the downwardly protruding knob-like formations, which absorbs the tensile forces occurring on its underside when the composite building board is loaded.
  • the arrangement of such a floor element also makes it possible to use relatively thin-walled material for the trough-shaped reinforcement, which has a favorable effect on their production costs.
  • the quantity of filler relevant for the impact sound insulation is nevertheless also present in sufficient quantities in the composite building board according to the invention.
  • the relatively high fire resistance of the composite building board is ensured by the fact that there is a sufficiently thick filler layer over the entire section of the board between the trough-shaped reinforcement and the top of the board.
  • any coverings can be attached to the top of the plate.
  • the knob-like formations on the underside of the trough-shaped reinforcement are preferably of uniform design and regularly arranged and are expediently produced using the steel sheet for the trough-shaped reinforcement in the deep-drawing process.
  • the floor element with high tensile strength can be welded, glued, riveted or screwed onto the knob-like formations of the trough-shaped reinforcement.
  • the floor element can simply consist of a sheet of thin metal.
  • the floor element can be perforated to further reduce the weight of the composite building board.
  • the flexural strength of the composite building board is improved if the base element is provided with stiffening beads or the like.
  • the bottom element can also be made of a grid, e.g. B. a steel mesh.
  • the height of the knob-like formations can be about half the total height of the trough-shaped reinforcement and thus un lie below the neutral level of the composite building board.
  • the knob-like formations can be frustoconical, their cross-section becoming smaller on the outside. This frusto-conical version of the knob-like formations is preferred because of the simplified removal of the finished trough-shaped reinforcement from a corresponding deep-drawing tool.
  • the height of the knob-like formations becomes progressively smaller towards the center of the trough-shaped reinforcement in order to arch the trough-shaped reinforcement slightly upwards, so that after the filler has been introduced, the underside and top of the composite building board run plane-parallel to one another, the slight deflection of the trough-shaped reinforcement caused by the weight of the filler is advantageously compensated for.
  • the trough-shaped reinforcement of which has openings with pressed-in edges for anchoring in the filler it is expedient for manufacturing reasons if the bottoms of the knob-like formations have these openings.
  • the openings in the bottoms of the knob-like formations are closed to the outside by the base element, the filler is prevented from escaping through these openings as long as it is still in the flowable or pourable state.
  • the closure materials previously applied over the openings for the same purpose are thus advantageously replaced by the base element which is required anyway.
  • knob-like formations are provided on their underside with wart-shaped welding projections for puncturing the base element, the spot welding process is facilitated.
  • the self-supporting composite building boards 10 and 10A selected as exemplary embodiments form floor boards for raised floors.
  • Such floor slabs are mutually laid on one another and are supported at their corners on footrests, which in turn are placed on the raw floor of the respective building.
  • the composite building board 10 contains an outer trough-shaped reinforcement 11, which in the exemplary embodiment is made of sheet steel with a surface protection, e.g. there is a zinc coating.
  • the trough-shaped reinforcement 11 has numerous, regularly arranged, uniform, knob-like formations 12 on its underside, which are formed in a deep-drawing process together with the upwardly extending, circumferential side walls 13 of the trough-shaped reinforcement 11.
  • These knob-like formations 12 form truncated cones, the cross-section of which is slightly smaller towards the outside or below.
  • the height of the formations 12 corresponds to approximately half the height of the reinforcement 11.
  • the height of the knob-like formations 12 can decrease progressively towards the center of the trough-shaped reinforcement 11, so that the bottom sides 14 of the formations 12 are slightly curved upwards.
  • This has the advantage that when the filler is introduced into the trough-shaped reinforcement, which is still to be described, the trough-shaped reinforcement 11 is bent downward to such an extent that the underside and top of the finished composite building board 10 run plane-parallel.
  • the knob-like formations 12 z. B. have a smallest diameter of approx. 20 mm and at a mutual distance of approx. 40 mm, measured from center to center of the protrusions.
  • a sheet steel plate of small thickness acting as a base element 15 is fastened by spot welding, which can be provided with openings 16 in relation to the cavities between the formations 12 for further weight saving, as is indicated in FIG. 4.
  • wart-like welding projections 17, which are arranged centrally on the outside on the bottom sides 14 and which facilitate the puncturing of the bottom element 15 by means of a corresponding spot welding machine.
  • This floor element 15 is used when the finished composite building board 10 to absorb tensile forces and is equal to the trough-shaped reinforcement 11 with a surface protection, for. B. provided a zinc coating.
  • tub reinforcement 11 To complete the cantilever composite building board 10 is in the open top, tub reinforcement 11, a flowable or pourable and curable filler 18, preferably anhydrite, introduced. Possibly. after passing through a vibrating station, excess filler 18 is wiped off in order to obtain a smooth surface 19. After the filler 18 has hardened, the surface 19 can, if necessary, be additionally ground so that it is perfectly flat.
  • the self-supporting composite building board 10A shown partially in section in FIG. 4 corresponds essentially to that according to FIG. 1 and the same parts are therefore also identified by the same reference numbers.
  • the trough-shaped reinforcement 11 on its circumferential side walls 13 and on the bottom sides 14 of its knob-like formations 12 has openings 21 with inwardly drawn edges, which produce a composite effect between the trough-shaped reinforcement 11 and the filler 18 serve.
  • the filler which has penetrated into the openings 21 with the inwardly drawn edges namely forms conical anchoring bodies after it has hardened.
  • the sheet steel sheet of small thickness which is fastened on the outside on the bottom sides 14 of the formations 12 by spot welding and serves as a bottom element 15 ', not only serves to absorb tensile forces when the composite building board 10A is loaded, but also serves the purpose of the filler 18 leaking out during the filling process Avoid openings 21 in the bottom sides 14.
  • the openings 21 in the side walls 13 of the trough-shaped reinforcement 11 are closed for the same purpose with an adhesive strip or the like to the outside.
  • the sheet steel plate serving as the base element 15 ' has in this embodiment 12 openings 16 between the formations for weight reduction.
  • the knob-like formations 12 in the trough-shaped reinforcement 11 can also be cylindrical or have a polygonal cross section. Although galvanized steel sheet is preferred for the trough-shaped reinforcement 11 and the floor elements 15 and 15 ', these components can also consist of other materials.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Floor Finish (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Laminated Bodies (AREA)

Abstract

A self-supporting composite plate for double floors or the like, comprising a pan-shaped wrapper for receiving therein a flowable and hardenable filler material of high compression resistance when in a hardened state, such as anhydrite or concrete. The pan-shaped wrapper comprises a plurality of downwardly extending burl-like projecting blocks containing the filler material. A base element of high tensile strength is connected to the projecting blocks.

Description

Die Erfindung bezieht sich auf eine freitragende Verbundbauplatte, insbesondere für Doppelböden, mit einer äusseren wannenförmigen Bewehrung für einen fliess- oder schüttfähigen und aushärtbaren Füllstoff mit hoher Druckfestigkeit im ausgehärteten Zustand, z.B. Anhydrit, Beton oderdgl.The invention relates to a self-supporting composite building board, in particular for raised floors, with an outer trough-shaped reinforcement for a flowable or pourable and curable filler with high compressive strength in the cured state, e.g. Anhydrite, concrete or the like

Eine derartige freitragende Verbundbauplatte ist durch die DE-PS 2004101 bekannt. Die wannenförmige Bewehrung dieser Verbundbauplatte hat einen praktisch ebenflächigen Boden und ihr gesamter lichter Querschnitt ist mit Anhydrit ausgefüllt, so dass diese Verbundbauplatte ein entsprechend hohes Gewicht hat. Für manche Fälle ist jedoch ein geringeres Plattengewicht erwünscht, ohne Abstriche bei den zahlreichen Vorteilen dieser Verbundbauplatte zu machen, z. B. bei der hohen Brandfestigkeit, Belastbarkeit, Trittschalldämmung usw.Such a self-supporting composite building board is known from DE-PS 2004101. The trough-shaped reinforcement of this composite building board has a practically flat floor and its entire clear cross-section is filled with anhydrite, so that this composite building board has a correspondingly high weight. In some cases, however, a lower board weight is desired without sacrificing the numerous advantages of this composite building board, e.g. B. with high fire resistance, resilience, impact sound insulation, etc.

Durch z.B. die DE-OS 3103632 und 2930426 sind auch bereits Doppelbodenplatten mit zahlreichen noppenförmigen Vorsprüngen an ihren Unterseiten bekannt, die sich aber sämtlich auf einem Unterboden abstützen, also eine Vielzahl von Tragfüssen bilden. Diese Doppelbodenplatten weisen ggf. zwar ein geringeres Gewicht als die eingangs erläuterte Verbundplatte auf, sind jedoch nicht frei tragend, d. h. nicht ausschliesslich an ihren Ecken auf Fussstützen abstützbar, denn es fehlt die hierfür erforderliche Bewehrung.By e.g. DE-OS 3103632 and 2930426 are also already known double floor panels with numerous knob-shaped projections on their undersides, but which are all supported on a sub-floor, that is, form a plurality of support feet. These raised access floor panels may have a lower weight than the composite panel explained at the outset, but are not self-supporting, i. H. cannot be supported exclusively on their corners on footrests, because the necessary reinforcement is missing.

Durch die US-PS 4411 121 ist eine aus Stahl bestehende Doppelbodenplatte bekannt, die eine ebenflächige Deckplatte enthält, welche an den Scheitelpunkten einer Vielzahl von kuppelförmigen Vorsprüngen sowie an dem umlaufenden, nach oben gebogenen Rand eines Unterteils angeschweisst ist. Auch diese Doppelbodenplatte hat ein relativ hohes Gewicht, ihr Hauptnachteil besteht jedoch darin, dass bei einem Brandausbruch im Hohlraum des Doppelbodens aufgrund der metallischen Verbindung der Unterseite mit der Oberseite der Platte eine praktisch unbehinderte Wärmeübertragung in den darüber befindlichen Raum mit allen nachteiligen Folgen stattfindet.From US-PS 4411 121 an existing double floor plate is known, which contains a flat cover plate, which is welded to the apex of a plurality of dome-shaped projections and to the peripheral, upwardly curved edge of a lower part. This double floor panel also has a relatively high weight, but its main disadvantage is that if a fire breaks out in the cavity of the double floor, due to the metallic connection of the underside to the top of the panel, there is practically unhindered heat transfer to the room above with all the disadvantageous consequences.

Der Erfindung liegt die Aufgabe zugrunde, eine freitragende Verbundbauplatte der eingangs bezeichneten Bauart derart weiterzubilden, dass sie ein merklich geringeres Gewicht hat und gleichwohl ihre vorstehend beschriebenen vorteilhaften Eigenschaften erhalten bleiben.The invention has for its object to develop a cantilever composite building board of the type mentioned in such a way that it has a significantly lower weight and still retain the advantageous properties described above.

Gemäss der Erfindung wird diese Aufgabe dadurch gelöst, dass die wannenförmige Bewehrung an ihrer Unterseite mit einer Vielzahl von noppenartigen, Füllstoff enthaltenden Ausformungen versehen ist, die durch ein Bodenelement von hoher Zugfestigkeit miteinander verbunden sind. Setzt man gleiche Bauhöhen zwischen der Verbundbauplatte nach dem Stand der Technik und der Verbundbauplatte gemäss der Erfindung voraus, so wird durch die noppenartigen Ausformungen an der Unterseite der wannenförmigen Bewehrung eine wesentlich geringere Füllstoffmenge aufgenommen als von dem entsprechenden unteren lichten Querschnittsbereich der bekannten wannenförmigen Bewehrung mit praktisch ebenflächigem Boden. Die dadurch mit der fertigen Verbundbauplatte im Vergleich zum Stand der Technik erzielte Gewichtsreduzierung beträgt etwa 40%. Statisch gesehen ist die geringere Füllstoffmenge im unteren Querschnittsbereich der Verbundbauplatte (unterhalb der neutralen Plattenebene) bedeutungslos, da bei Belastung der Verbundbauplatte in diesem Bereich ohnehin nurZugspannungen auftreten und es sich bei dem Füllstoff, z. B. Anhydrit oder Beton, um einen solchen mit sehr geringer Zugfestigkeit und sehr geringem Elastizitätsmodul handelt. Die hohe Belastbarkeit der Verbundbauplatte gemäss der Erfindung ist dadurch gewährleistet, dass an den nach unten ragenden noppenartigen Ausformungen ein Bodenelement von hoher Zugfestigkeit befestigt wird, welches bei Belastung der Verbundbauplatte die an iher Unterseite auftretenden Zugkräfte aufnimmt. Durch die Anordnung eines solchen Bodenelements ist es auch möglich, relativ dünnwandiges Material für die wannenförmige Bewehrung zu verwenden, was sich günstig auf deren Herstellungskosten auswirkt. Die für die Trittschalldämmung massgebliche Menge an Füllstoff ist gleichwohl auch bei der erfindungsgemässen Verbundbauplatte in ausreichendem Masse vorhanden. Die relativ hohe Brandfestigkeit der Verbundbauplatte ist dadurch sichergestellt, dass eine hierfür massgebende ausreichend dicke Füllstoffschicht über den gesamten Plattenquerschnitt zwischen der wannenförmigen Bewehrung und der Plattenoberseite vorhanden ist. Auf der Plattenoberseite können, wie bekannt, beliebige Deckbeläge befestigt werden. Die noppenartigen Ausformungen an der Unterseite der wannenförmigen Bewehrung sind vorzugsweise gleichförmig ausgebildet und regelmässig angeordnet und werden bei Verwendung von Stahlblech für die wannenförmige Bewehrung zweckmässig im Tiefziehverfahren hergestellt. Das Bodenelement von hoher Zugfestigkeit kann an den noppenartigen Ausformungen der wannenförmigen Bewehrung angeschweisst, angeklebt, angenietet oder auch angeschraubt werden.According to the invention, this object is achieved in that the trough-shaped reinforcement is provided on its underside with a large number of knob-like, filler-containing formations which are connected to one another by a floor element of high tensile strength. Assuming the same overall heights between the composite building board according to the prior art and the composite building board according to the invention, the knob-like formations on the underside of the trough-shaped reinforcement means that a much smaller amount of filler is absorbed than from the corresponding lower clear cross-sectional area of the known trough-shaped reinforcement with practical flat floor. The weight reduction achieved in this way with the finished composite building board compared to the prior art is approximately 40%. Statically speaking, the smaller amount of filler in the lower cross-sectional area of the composite building board (below the neutral board level) is meaningless, since when the composite building board is loaded only tensile stresses occur in this area anyway and the filler, e.g. B. anhydrite or concrete, is one with very low tensile strength and very low modulus of elasticity. The high load-bearing capacity of the composite building board according to the invention is ensured by attaching a floor element of high tensile strength to the downwardly protruding knob-like formations, which absorbs the tensile forces occurring on its underside when the composite building board is loaded. The arrangement of such a floor element also makes it possible to use relatively thin-walled material for the trough-shaped reinforcement, which has a favorable effect on their production costs. The quantity of filler relevant for the impact sound insulation is nevertheless also present in sufficient quantities in the composite building board according to the invention. The relatively high fire resistance of the composite building board is ensured by the fact that there is a sufficiently thick filler layer over the entire section of the board between the trough-shaped reinforcement and the top of the board. As is known, any coverings can be attached to the top of the plate. The knob-like formations on the underside of the trough-shaped reinforcement are preferably of uniform design and regularly arranged and are expediently produced using the steel sheet for the trough-shaped reinforcement in the deep-drawing process. The floor element with high tensile strength can be welded, glued, riveted or screwed onto the knob-like formations of the trough-shaped reinforcement.

Weitere Ausgestaltungen der Erfindung gehen aus den Unteransprüchen hervor. So kann das Bodenelement einfach aus einer Blechtafel geringer Dicke bestehen.Further embodiments of the invention emerge from the subclaims. So the floor element can simply consist of a sheet of thin metal.

Zur weiteren Gewichtsreduzierung der Verbundbauplatte kann das Bodenelement perforiert sein.The floor element can be perforated to further reduce the weight of the composite building board.

Die Biegefestigkeit der Verbundbauplatte wird verbessert, wenn das Bodenelement mit Aussteifungssicken oder dgl. versehen ist.The flexural strength of the composite building board is improved if the base element is provided with stiffening beads or the like.

Nach einer weiteren Ausbildung der Erfindung kann das Bodenelement auch aus einem Gitter, z. B. einem Baustahlgitter, gebildet sein.According to a further embodiment of the invention, the bottom element can also be made of a grid, e.g. B. a steel mesh.

Die Höhe der noppenartigen Ausformungen kann etwa die Hälfte der Gesamthöhe der wannenförmigen Bewehrung betragen und damit unterhalb der neutralen Ebene der Verbundbauplatte liegen.The height of the knob-like formations can be about half the total height of the trough-shaped reinforcement and thus un lie below the neutral level of the composite building board.

Die noppenartigen Ausformungen können kegelstumpfförmig ausgebildet sein, wobei ihr Querschnitt nach aussen kleiner wird. Diese kegelstumpfförmige Version der noppenartigen Ausformungen wird wegen der vereinfachten Herausnahme der fertigen wannenförmigen Bewehrung aus einem entsprechenden Tiefziehwerkzeug bevorzugt.The knob-like formations can be frustoconical, their cross-section becoming smaller on the outside. This frusto-conical version of the knob-like formations is preferred because of the simplified removal of the finished trough-shaped reinforcement from a corresponding deep-drawing tool.

Wenn nach noch einer anderen Ausgestaltung der Erfindung die Höhe der noppenartigen Ausformungen gegen die Mitte der wannenförmigen Bewehrung fortschreitend kleiner wird, um die wannenförmige Bewehrung geringfügig nach oben zu wölben, so dass nach erfolgter Einbringung des Füllstoffs die Unterseite und Oberseite der Verbundbauplatte planparallel zueinander verlaufen, wird vorteilhaft die durch das Gewicht des Füllstoffs verursachte, geringfügige Durchbiegung der wannenförmigen Bewehrung kompensiert.If, according to yet another embodiment of the invention, the height of the knob-like formations becomes progressively smaller towards the center of the trough-shaped reinforcement in order to arch the trough-shaped reinforcement slightly upwards, so that after the filler has been introduced, the underside and top of the composite building board run plane-parallel to one another, the slight deflection of the trough-shaped reinforcement caused by the weight of the filler is advantageously compensated for.

Bei einer Verbundbauplatte, deren wannenförmige Bewehrung Öffnungen mit nach innen gedrückten Rändern zur Verankerung in dem Füllstoff aufweist, ist es aus herstellungstechnischen Gründen zweckmässig, wenn die Böden der noppenartigen Ausformungen diese Öffnungen aufweisen.In the case of a composite building board, the trough-shaped reinforcement of which has openings with pressed-in edges for anchoring in the filler, it is expedient for manufacturing reasons if the bottoms of the knob-like formations have these openings.

Wenn nach noch einer anderen Ausgestaltung der Erfindung die Öffnungen in den Böden der noppenartigen Ausformungen durch das Bodenelement nach aussen verschlossen sind, wird ein Austreten des Füllstoffes durch diese Öffnungen, so lange er sich noch im fliessfähigen oder schüttfähigen Zustand befindet, verhindert. Die bisher für den gleichen Zweck über den Öffnungen aufgebrachten Verschlussmaterialien werden somit vorteilhaft durch das ohnehin erforderliche Bodenelement ersetzt.If, according to yet another embodiment of the invention, the openings in the bottoms of the knob-like formations are closed to the outside by the base element, the filler is prevented from escaping through these openings as long as it is still in the flowable or pourable state. The closure materials previously applied over the openings for the same purpose are thus advantageously replaced by the base element which is required anyway.

Wenn die noppenartigen Ausformungen an ihrer Unterseite mit warzenförmigen Schweissvorsprüngen zum Anpunkten des Bodenelements versehen ist, wird der Punkt-Schweissvorgang erleichtert.If the knob-like formations are provided on their underside with wart-shaped welding projections for puncturing the base element, the spot welding process is facilitated.

Die Erfindung wird anschliessend anhand der Zeichnungen eines Ausführungsbeispiels erläutert. Es zeigen:

  • Fig. 1 eine Draufsicht auf eine wannenförmige Bewehrung für eine freitragende Verbundbauplatte gemäss der Erfindung;
  • Fig. 2 eine Teil-Schnittansicht der wannenförmigen Bewehrung entlang der Linie II-II in Fig. 1 mit einer Blechtafel als Bodenelement vor ihrer Verbindung durch Punktschweissung mit der wannenförmigen Bewehrung, letztere bereits mit Füllstoff;
  • Fig.3 eine vergrösserte Teil-Schnittansicht einer fertigen freitragenden Verbundbauplatte, die die wannenförmige Bewehrung der Figuren 1 und 2 sowie ein angeschweisstes Bodenelement enthält und
  • Fig. 4 eine der Fig. ähnliche Teil-Schnittansicht einer fertigen freitragenden Verbundbauplatte, jedoch mit einer anderen Ausführung der wannenförmigen Bewehrung und des Bodenelements.
The invention is subsequently explained using the drawings of an exemplary embodiment. Show it:
  • Figure 1 is a plan view of a trough-shaped reinforcement for a self-supporting composite building board according to the invention.
  • Fig. 2 is a partial sectional view of the trough-shaped reinforcement along the line II-II in Figure 1 with a sheet as a floor element before its connection by spot welding with the trough-shaped reinforcement, the latter already with filler.
  • 3 shows an enlarged partial sectional view of a finished self-supporting composite building board which contains the trough-shaped reinforcement of FIGS. 1 and 2 and a welded-on floor element, and
  • Fig. 4 is a partial sectional view similar to Fig. Of a finished self-supporting composite building board, but with a different design of the trough-shaped reinforcement and the floor element.

Die als Ausführungsbeispiel gewählten freitragenden Verbundbauplatten 10 bzw. 10A bilden Bodenplatten für Doppelböden. Solche Bodenplatten werden gegenseitig auf Stoss verlegt und dabei an ihren Ecken auf Fussstützen aufgelagert, die ihrerseits auf dem Rohboden des jeweiligen Gebäudes aufgestellt werden.The self-supporting composite building boards 10 and 10A selected as exemplary embodiments form floor boards for raised floors. Such floor slabs are mutually laid on one another and are supported at their corners on footrests, which in turn are placed on the raw floor of the respective building.

Die Verbundbauplatte 10 enthält eine äussere wannenförmige Bewehrung 11, welche im Ausführungsbeispiel aus Stahlblech mit einem Oberflächenschutz, z.B. einem Zinküberzug besteht. Die wannenförmige Bewehrung 11 weist an ihrer Unterseite zahlreiche, regelmässig angeordnete, gleichförmige, noppenartige Ausformungen 12 auf, die in einem Tiefziehvorgang zusammen mit den nach oben ragenden, umlaufenden Seitenwänden 13 der wannenförmigen Bewehrung 11 ausgebildet werden. Diese noppenartigen Ausformungen 12 bilden Kegelstümpfe, deren Querschnitt nach aussen bzw. unten geringfügig kleiner wird. Die Höhe der Ausformungen 12 entspricht etwa der halben Höhe der Bewehrung 11. Wenngleich nicht gezeigt, kann die Höhe der noppenartigen Ausformungen 12 gegen die Mitte der wannenförmigen Bewehrung 11 fortschreitend abnehmen, so dass die Bodenseiten 14 der Ausformungen 12 geringfügig nach oben gewölbt sind. Dies bringt den Vorteil, dass bei dem noch zu beschreibenden Einbringen des Füllstoffes in die wannenförmige Bewehrung durch das Gewicht des Füllstoffes die wannenförmige Bewehrung 11 um ein solches Ausmass nach unten durchgebogen wird, dass die Unterseite und Oberseite der fertigen Verbundbauplatte 10 planparallel verlaufen. Bei einer Kantenlänge der fertigen Verbundbauplatte 10 von z.B. 600 mm können die noppenartigen Ausformungen 12 z. B. einen kleinsten Durchmesser von ca. 20 mm aufweisen und in einem gegenseitigen Abstand von ca. 40 mm, gemessen von Mittelpunkt zu Mittelpunkt derAusformungen, angeordnet sein.The composite building board 10 contains an outer trough-shaped reinforcement 11, which in the exemplary embodiment is made of sheet steel with a surface protection, e.g. there is a zinc coating. The trough-shaped reinforcement 11 has numerous, regularly arranged, uniform, knob-like formations 12 on its underside, which are formed in a deep-drawing process together with the upwardly extending, circumferential side walls 13 of the trough-shaped reinforcement 11. These knob-like formations 12 form truncated cones, the cross-section of which is slightly smaller towards the outside or below. The height of the formations 12 corresponds to approximately half the height of the reinforcement 11. Although not shown, the height of the knob-like formations 12 can decrease progressively towards the center of the trough-shaped reinforcement 11, so that the bottom sides 14 of the formations 12 are slightly curved upwards. This has the advantage that when the filler is introduced into the trough-shaped reinforcement, which is still to be described, the trough-shaped reinforcement 11 is bent downward to such an extent that the underside and top of the finished composite building board 10 run plane-parallel. With an edge length of the finished composite building board 10 of e.g. The knob-like formations 12 z. B. have a smallest diameter of approx. 20 mm and at a mutual distance of approx. 40 mm, measured from center to center of the protrusions.

An den flachen Bodenseiten 14 der noppenartigen Ausformungen 12 wird durch Punktschweissung eine als Bodenelement 15 wirkende Stahlblechtafel geringer Dicke befestigt, die gegenüber den Hohlräumen zwischen den Ausformungen 12 zur weiteren Gewichtseinsparung mit Öffnungen 16 versehen sein kann, wie dies in Fig. 4 angedeutet ist. Aus Fig. 2 geht hervor, dass aussen an den Bodenseiten 14 mittig angeordnete, warzenartige Schweissvorsprünge 17 angeordnet sind, welche das Anpunkten des Bodenelements 15 mittels einer entsprechenden Punktschweissmaschine erleichtern. Dieses Bodenelement 15 dient bei Belastung der fertigen Verbundbauplatte 10 der Aufnahme von Zugkräften und ist gleich der wannenförmigen Bewehrung 11 mit einem Oberflächenschutz, z. B. einem Zinküberzug versehen.On the flat bottom sides 14 of the knob-like formations 12, a sheet steel plate of small thickness acting as a base element 15 is fastened by spot welding, which can be provided with openings 16 in relation to the cavities between the formations 12 for further weight saving, as is indicated in FIG. 4. From FIG. 2 it can be seen that wart-like welding projections 17, which are arranged centrally on the outside on the bottom sides 14 and which facilitate the puncturing of the bottom element 15 by means of a corresponding spot welding machine. This floor element 15 is used when the finished composite building board 10 to absorb tensile forces and is equal to the trough-shaped reinforcement 11 with a surface protection, for. B. provided a zinc coating.

Zur Fertigstellung der freitragenden Verbundbauplatte 10 wird in die oben offene, wannenförmige Bewehrung 11 ein fliess- oder schüttfähiger und aushärtbarer Füllstoff 18, vorzugsweise Anhydrit, eingebracht. Ggf. nach Durchlaufen einer Rüttelstation wird überschüssiger Füllstoff 18 abgestrichen, um eine glatte Oberfläche 19 zu erhalten. Nach erfolgter Aushärtung des Füllstoffes 18 kann die Oberfläche 19 erforderlichenfalls zusätzlich abgeschliffen werden, damit sie einwandfrei ebenflächig ist. An der Oberfläche 19 wird dann ein Gehbelag 20, z. B. ein Teppichboden, eine Kunststoffplatte usw. durch einen Kleber befestigt.To complete the cantilever composite building board 10 is in the open top, tub reinforcement 11, a flowable or pourable and curable filler 18, preferably anhydrite, introduced. Possibly. after passing through a vibrating station, excess filler 18 is wiped off in order to obtain a smooth surface 19. After the filler 18 has hardened, the surface 19 can, if necessary, be additionally ground so that it is perfectly flat. A walking surface 20, e.g. B. a carpet, a plastic plate, etc. fixed by an adhesive.

Die in Fig. 4 teilweise im Schnitt gezeigte freitragende Verbundbauplatte 10A entspricht im wesentlichen derjenigen nach Fig. und gleiche Teile sind daher auch mit den gleichen Bezugszahlen gekennzeichnet. Im Gegensatz zur Ausführungsform nach Fig. weist hier jedoch die wannenförmige Bewehrung 11 an ihren umlaufenden Seitenwänden 13 sowie an den Bodenseiten 14 ihrer noppenartigen Ausformungen 12 Öffnungen 21 mit nach innen gezogenen Rändern auf, die zur Herstellung einer Verbundwirkung zwischen der wannenförmigen Bewehrung 11 und dem Füllstoff 18 dienen. Der in die Öffnungen 21 mit den nach innen gezogenen Rändern eingedrungene Füllstoff bildet nämlich nach dessen Aushärtung konische Verankerungskörper. Die entsprechenden Einzelheiten sind in der DE-PS 2004101 ausführlich beschrieben. Die aussen an den Bodenseiten 14 der Ausformungen 12 durch Punktschweissung befestigte und als Bodenelement 15' dienende Stahlblechtafel geringer Dicke dient hier nicht nur der Aufnahme von Zugkräften bei Belastung der Verbundbauplatte 10A, sondern zusätzlich dem Zweck, während des Füllvorganges ein Auslaufen des Füllstoffes 18 aus den Öffnungen 21 in den Bodenseiten 14 zu vermeiden. Die Öffnungen 21 in den Seitenwänden 13 der wannenförmigen Bewehrung 11 werden für den gleichen Zweck mit einem Klebestreifen oder dergleichen nach ausser verschlossen. Die als Bodenelement 15' dienende Stahlblechtafel hat bei diesem Ausführungsbeispiel zwischen den Ausformungen 12 Öffnungen 16 zur Gewichtsreduzierung.The self-supporting composite building board 10A shown partially in section in FIG. 4 corresponds essentially to that according to FIG. 1 and the same parts are therefore also identified by the same reference numbers. In contrast to the embodiment according to Fig. Here, however, the trough-shaped reinforcement 11 on its circumferential side walls 13 and on the bottom sides 14 of its knob-like formations 12 has openings 21 with inwardly drawn edges, which produce a composite effect between the trough-shaped reinforcement 11 and the filler 18 serve. The filler which has penetrated into the openings 21 with the inwardly drawn edges namely forms conical anchoring bodies after it has hardened. The corresponding details are described in detail in DE-PS 2004101. The sheet steel sheet of small thickness, which is fastened on the outside on the bottom sides 14 of the formations 12 by spot welding and serves as a bottom element 15 ', not only serves to absorb tensile forces when the composite building board 10A is loaded, but also serves the purpose of the filler 18 leaking out during the filling process Avoid openings 21 in the bottom sides 14. The openings 21 in the side walls 13 of the trough-shaped reinforcement 11 are closed for the same purpose with an adhesive strip or the like to the outside. The sheet steel plate serving as the base element 15 'has in this embodiment 12 openings 16 between the formations for weight reduction.

Die noppenartigen Ausformungen 12 in der wannenförmigen Bewehrung 11 können auch zylinderförmig ausgebildet sein oder einen polygonen Querschnitt aufweisen. Wenngleich verzinktes Stahlblech für die wannenförmige Bewehrung 11 und die Bodenelemente 15 bzw. 15' bevorzugt wird, können diese Bauteile auch aus anderen Materialien bestehen.The knob-like formations 12 in the trough-shaped reinforcement 11 can also be cylindrical or have a polygonal cross section. Although galvanized steel sheet is preferred for the trough-shaped reinforcement 11 and the floor elements 15 and 15 ', these components can also consist of other materials.

Claims (11)

1. Self-supporting composite building slab, especially for double floors, with an outer, trough-formed reinforcement for a flowing or vi- bratable and hardenable filling material with high compressive strength in the hardened state, e.g. anhydrite, concrete or the like, characterized in that the trough-formed reinforcement (11) is provided on its underside with a plurality of knob-like formations (12) containing filling material (18), which are connected together by a bottom element (15) of high tensile strength.
2. Composite building slab according to claim 1, characterized in that the bottom element (15) consists of a metal sheet of small thickness.
3. Composite building slab according to claim 2, characterized in that the bottom element (15) is perforated.
4. Composite building slab according to claim 2, characterized in that the bottom element (15) is provided with stiffening ribs or the like.
5. Composite building slab according to claim 1, characterized in that the bottom element is formed from a mesh, e.g. a building steel mesh.
6. Composite building slab according to claim 1, characterized in that the height of the knob-like formations amount to approximately half the overall height of the trough-formed reinforcement (11).
7. Composite building slab according to claim 1, characterized in that the knob-like formations (12) are formed frustoconically so that their cross-section becomes smaller outwardly.
8. Composite building slab according to claim 1, characterized in that the height of the knob-like formations (12) becomes progressively smaller towards the centre of the trough-formed reinforcement (11), in order to arch the trough-formed reinforcement (11) slightly upwardly, so that after completed introduction of the filling material (18) the underside and upper side of the composite slab (10, 10A) run flat parallel to one another.
9. Composite building slab according to claims 1, 6 or 7, whose trough-formed reinforcement has openings with inwardly pressed edges for anchoring in the filling material, characterized in that the bottoms (14) of the knob-like formations (12) have these openings (21).
10. Composite building slab according to claims 1, 2 and 9, characterized in that the openings (21) in the bottoms (14) of the knob-like formations are outwardly closed by the bottom element (15).
11. Composite building slab according to claim 1, characterized in that the knob-like formations (12) are provided on their underside with pimpled welding protuberances (17) for the spot-welding of the bottom element (15).
EP85109559A 1984-08-24 1985-07-30 Cantilever composite slab for construction, in particular for double bottom Expired EP0173095B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85109559T ATE44065T1 (en) 1984-08-24 1985-07-30 SELF-SUPPORTING COMPOSITE PANEL, ESPECIALLY FOR RAISED FLOORS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3431118A DE3431118C1 (en) 1984-08-24 1984-08-24 Self-supporting composite building board, especially for double floors
DE3431118 1984-08-24

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EP0173095A2 EP0173095A2 (en) 1986-03-05
EP0173095A3 EP0173095A3 (en) 1987-03-25
EP0173095B1 true EP0173095B1 (en) 1989-06-14

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US (1) US4640854A (en)
EP (1) EP0173095B1 (en)
AT (1) ATE44065T1 (en)
CA (1) CA1251944A (en)
DE (1) DE3431118C1 (en)
ES (1) ES288739Y (en)

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Also Published As

Publication number Publication date
ATE44065T1 (en) 1989-06-15
ES288739Y (en) 1986-10-01
CA1251944A (en) 1989-04-04
EP0173095A3 (en) 1987-03-25
DE3431118C1 (en) 1985-04-04
EP0173095A2 (en) 1986-03-05
ES288739U (en) 1986-01-16
US4640854A (en) 1987-02-03

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