EP0173095A2 - 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
EP0173095A2
EP0173095A2 EP85109559A EP85109559A EP0173095A2 EP 0173095 A2 EP0173095 A2 EP 0173095A2 EP 85109559 A EP85109559 A EP 85109559A EP 85109559 A EP85109559 A EP 85109559A EP 0173095 A2 EP0173095 A2 EP 0173095A2
Authority
EP
European Patent Office
Prior art keywords
composite building
building board
formations
trough
shaped reinforcement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP85109559A
Other languages
German (de)
French (fr)
Other versions
EP0173095B1 (en
EP0173095A3 (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 2 004 101.
  • the trough-shaped reinforcement of this composite building board has a practically flat bottom 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. with high fire resistance, resilience, impact sound insulation, etc.
  • DE-OS 31 03 632 and 29 30 426 are also already known double floor panels with numerous knob-shaped projections on their undersides, but which are all supported on an underbody, that is, form a plurality of support feet.
  • These raised access floor panels may have a lower weight than the composite construction panel explained at the beginning, but are not self-supporting, i.e. cannot be supported exclusively on their corners on footrests, because the required reinforcement is missing.
  • a double floor plate made of steel 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 in the event of a fire in the cavity of the double floor due to the metallic connection of the underside to the top of the panel, practically unimpeded heat transfer to the room above takes place with all the disadvantageous consequences.
  • 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 plurality of nub-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 a practically flat floor.
  • the weight reduction achieved in this way with the finished composite building board compared to the prior art is approximately 40%.
  • the lower amount of filler in the lower cross-sectional area of the composite building board (below the neutral board level) is meaningless because when the composite building board is loaded in this area, only tensile stresses occur anyway and the filler, for example anhydrite or concrete, is one with very low tensile strength and very low modulus of elasticity.
  • the high resilience of the composite building board according to the invention is ensured in that a bottom element of high tensile strength is attached 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 amount of filler relevant for the impact sound insulation is nevertheless also present to a sufficient extent 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 a sufficiently thick filler layer that is decisive for this is present over the entire board cross-section 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 are arranged regularly 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 bottom element must be perforated.
  • the flexural strength of the composite building board is improved if the base element is provided with stiffening beads or the like.
  • the floor element can also consist of a grid, e.g. a steel mesh, be formed.
  • the height of the knob-like formations can be approximately half the total height of the trough-shaped reinforcement and thus lie below the neutral level of the composite building board.
  • the knob-like formations can be frustoconical, their cross-section becoming smaller towards 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 knobs like formations these openings have.
  • 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.
  • 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 laid against each other and placed 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 by the weight of the filler, the trough-shaped reinforcement 11 is bent down to such an extent that the underside and top of the finished composite building board 10 are planar-parallel run.
  • the knob-like formations 12 e.g. have a smallest diameter of approx. 20 mm and be arranged at a mutual distance of approx. 40 mm, measured from center to center of the formations.
  • a sheet of steel of small thickness, acting as a base element 15, is fastened by means of 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.
  • 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 are arranged, which facilitate the puncturing of the bottom element 15 by means of a corresponding spot welding machine.
  • this floor element 15 serves to absorb tensile forces and, like the trough-shaped reinforcement 11, is provided with a surface protection, for example a zinc coating.
  • a flowable or pourable and curable filler 18, preferably anhydrite, is introduced into the trough-shaped reinforcement 11, which is open at the top. 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. a carpet, a plastic sheet, etc. is attached by an adhesive.
  • the self-supporting composite building board 10A shown partially in section in FIG. 4 essentially corresponds to that according to FIG. 3 and the same parts are therefore also identified by the same reference numbers.
  • the trough-shaped reinforcement 11 has openings 21 with inwardly drawn edges on its circumferential side walls 13 and on the bottom sides 14 of its knob-like formations, which edges serve to produce a composite effect between the trough-shaped reinforcement 11 and the Filler 18 serve.
  • DE-PS 2 004 101 The corresponding details are described in detail in DE-PS 2 004 101.
  • 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 base element 15 ', serves not only to absorb tensile forces when the composite building board 10A is loaded, but also for 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 to the outside for the same purpose with an adhesive strip or the like.
  • the sheet steel plate serving as the base element 15 ' has, in this exemplary embodiment, openings 16 between the formations 16 for reducing weight.
  • 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)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Laminated Bodies (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

Um bei freitragenden Verbundbauplatten, insbesondere für Doppelböden mit einer äußeren wannenförmigen Bewehrung 11 für einen fließ- oder schüttfähigen und aushärtbaren Füllstoff 18, z. B. Anhydrit, das vor allem von dem Füllstoff 18 verursachte hohe Plattengewicht zu verringern, weist die wannenförmige Bewehrung 11 an ihrer Unterseite eine Vielzahl von noppenartigen, kegelstumpfförmigen Ausformungen 12 auf, die nur eine entsprechend begrenzte Menge an Füllstoff 18 aufnehmen. Die noppenartigen Ausformungen 12 sind durch ein ebenes Bodenelement 15 von hoher Zugfestigkeit miteinander verbunden, das bei belasteter Verbundbauplatte 10 der Aufnahme von Zugkräften dient.In order to cantilever composite building boards, in particular for raised floors with an outer trough-shaped reinforcement 11 for a flowable or pourable and curable filler 18, for. B. anhydrite, to reduce the high plate weight caused primarily by the filler 18, the trough-shaped reinforcement 11 has on its underside a multitude of knob-like, frustoconical formations 12, which absorb only a correspondingly limited amount of filler 18. The knob-like formations 12 are connected to one another by a flat base element 15 of high tensile strength, which serves to absorb tensile forces when the composite building board 10 is loaded.

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 oder dgl.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 2 004 101 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 2 004 101. The trough-shaped reinforcement of this composite building board has a practically flat bottom 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. with high fire resistance, resilience, impact sound insulation, etc.

Durch z.B. die DE-OS 31 03 632 und 29 30 426 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 Verbundbauplatte 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 31 03 632 and 29 30 426 are also already known double floor panels with numerous knob-shaped projections on their undersides, but which are all supported on an underbody, that is, form a plurality of support feet. These raised access floor panels may have a lower weight than the composite construction panel explained at the beginning, but are not self-supporting, i.e. cannot be supported exclusively on their corners on footrests, because the required reinforcement is missing.

Durch die US-PS 4 411 121 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 4 411 121 a double floor plate made of steel 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 in the event of a fire in the cavity of the double floor due to the metallic connection of the underside to the top of the panel, practically unimpeded heat transfer to the room above takes place 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 glei-' che 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 dεm 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 nur Zugspannungen 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 ihrer 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 dikke 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 plurality of nub-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 a practically 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 lower amount of filler in the lower cross-sectional area of the composite building board (below the neutral board level) is meaningless because when the composite building board is loaded in this area, only tensile stresses occur anyway and the filler, for example anhydrite or concrete, is one with very low tensile strength and very low modulus of elasticity. The high resilience of the composite building board according to the invention is ensured in that a bottom element of high tensile strength is attached 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 amount of filler relevant for the impact sound insulation is nevertheless also present to a sufficient extent 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 a sufficiently thick filler layer that is decisive for this is present over the entire board cross-section 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 are arranged regularly 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.To further reduce the weight of the composite building board the bottom element must be perforated.

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 floor element can also consist of a grid, e.g. a steel mesh, be formed.

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 approximately half the total height of the trough-shaped reinforcement and thus 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 towards 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 knobs like formations these openings have.

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 sind, wird der Punkt-Schweißvorgang erleichtert.If the nub-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. 3 ähnliche Teil-Schnittansicht einer fertigen freitragenden Verbundbauplatte, jedoch mit einer anderen Ausführung der wannenförmigen Bewehrung und des Bodenelements.
The invention is subsequently explained with reference to 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.
  • Fig. 3 is an enlarged partial sectional view of a finished self-supporting composite building board, which contains the trough-shaped reinforcement of Figures 1 and 2 and a welded-on floor element and
  • Fig. 4 is a partial sectional view similar to Fig. 3 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 laid against each other and placed 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 planparal-r-lel 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 der Ausformungen, 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 by the weight of the filler, the trough-shaped reinforcement 11 is bent down to such an extent that the underside and top of the finished composite building board 10 are planar-parallel run. With an edge length of the finished composite building board 10 of e.g. The knob-like formations 12 e.g. have a smallest diameter of approx. 20 mm and be arranged at a mutual distance of approx. 40 mm, measured from center to center of the formations.

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 Bodenelments 15 mittels einer entsprechenden Punktschweißmaschine erleichtem. 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 shape A sheet of steel of small thickness, acting as a base element 15, is fastened by means of 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 on the outside on the bottom sides 14 centrally arranged, wart-like welding projections 17 are arranged, which facilitate the puncturing of the bottom element 15 by means of a corresponding spot welding machine. When the finished composite building board 10 is loaded, this floor element 15 serves to absorb tensile forces and, like the trough-shaped reinforcement 11, is provided with a surface protection, for example 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 abgestriffen, 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.In order to complete the self-supporting composite building board 10, a flowable or pourable and curable filler 18, preferably anhydrite, is introduced into the trough-shaped reinforcement 11, which is open at the top. 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. a carpet, a plastic sheet, etc. is attached by an adhesive.

Die in Fig.4 teilweise im Schnitt gezeigte freitragende Verbundbauplatte 10A entspricht im wesentlichen derjenigen nach Fig. 3 und gleiche Teile sind daher auch mit den gleichen Bezugszahlen gekennzeichnet. Im Gegensatz zur Ausführungsform nach Fig. 3 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 2 004 101 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 außen 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 essentially corresponds to that according to FIG. 3 and the same parts are therefore also identified by the same reference numbers. In contrast to the embodiment according to FIG. 3, however, the trough-shaped reinforcement 11 has openings 21 with inwardly drawn edges on its circumferential side walls 13 and on the bottom sides 14 of its knob-like formations, which edges serve to produce a composite effect between the trough-shaped reinforcement 11 and the Filler 18 serve. The inserted into the openings 21 with the edges drawn inwards After filling, the bulky filler forms conical anchoring elements. The corresponding details are described in detail in DE-PS 2 004 101. 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 base element 15 ', serves not only to absorb tensile forces when the composite building board 10A is loaded, but also for 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 to the outside for the same purpose with an adhesive strip or the like. The sheet steel plate serving as the base element 15 'has, in this exemplary embodiment, openings 16 between the formations 16 for reducing weight.

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. 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 oder dergleichen, dadurch gekennzeichnet, daß die wannenförmige Bewehrung (11) an ihrer Unterseite mit einer Vielzahl von noppenartigen, Füllstoff (18) enthaltenden Ausformungen (12) versehen ist, die durch ein Bodenelement (15) von hoher Zugfestigkeit miteinander verbunden sind.1.Cantilevered composite building board, especially for raised floors, with an outer trough-shaped reinforcement for a flowable or pourable and curable filler with high compressive strength in the hardened state, e.g. Anhydrite, concrete or the like, characterized in that the trough-shaped reinforcement (11) is provided on its underside with a multiplicity of nub-like formations (12) containing filler (18) which are connected to one another by a floor element (15) of high tensile strength . 2. Verbundbauplatte nach Anspruch 1, dadurch gekennzeichnet, daß das Bodenelement (15) aus einer Blechtafel geringer Dicke besteht.2. Composite building board according to claim 1, characterized in that the bottom element (15) consists of a sheet metal plate of small thickness. 3. Verbundbauplatte nach Anspruch 2, dadurch gekennzeichnet, daß das Bodenelement (15) perforiert ist.3. Composite building board according to claim 2, characterized in that the bottom element (15) is perforated. 4. Verbundbauplatte nach Anspruch 2, dadurch gekennzeichnet, daß das Bodenelement (15) mit Aussteifungssicken oder dergleichen versehen ist.4. Composite building board according to claim 2, characterized in that the bottom element (15) is provided with stiffening beads or the like. 5. Verbundbauplatte nach Anspruch 1, dadurch gekennzeichnet, daß das Bodenelement aus einem Gitter, z.B. einem Baustahlgitter gebildet ist.5. Composite building board according to claim 1, characterized in that the bottom element consists of a grid, e.g. a steel mesh is formed. 6. Verbundbauplatte nach Anspruch 1, dadurch gekennzeichnet, daß die Höhe der noppenartigen Ausformungen etwa die Hälfte der Gesamthöhe der wannenförmigen Bewehrung (11) beträgt.6. Composite building board according to claim 1, characterized in that the height of the knob-like formations is approximately half the total height of the trough-shaped reinforcement (11). 7. Verbundbauplatte nach Anspruch 1; dadurch gekennzeichnet, daß die noppenartigen Ausformungen (12) kegelstumpfförmig ausgebildet sind, wobei ihr Querschnitt nach außen kleiner wird. 7 . V erbundbauplatte according to claim 1; characterized in that the knob-like formations (12) cone are frustoconical, their cross-section is smaller towards the outside. 8. Verbundbauplatte nach Anspruch 1, dadurch gekennzeichnet, daß die Höhe der noppenartigen Ausformungen (12) gegen die Mitte der wannenförmigen Bewehrung (11) fortschreitend kleiner wird, um die wannenförmige Bewehrung (11) geringfügig nach oben zu wölben, so daß nach erfolgter Einbringung des Füllstoffes (18) die Unterseite und Oberseite der Verbundbauplatte (10, 10A) planparallel zueinander verlaufen.8. Composite building board according to claim 1, characterized in that the height of the knob-like formations (12) towards the center of the trough-shaped reinforcement (11) is progressively smaller in order to arch the trough-shaped reinforcement (11) slightly upwards, so that after insertion of the filler (18), the underside and top of the composite building board (10, 10A) run plane-parallel to one another. 9. Verbundbauplatte nach Anspruch 1, 6 oder 7, deren wannenförmige Bewehrung öffnungen mit nach innen gedrückten Rändern zur Verankerung in dem Füllstoff aufweist, dadurch gekennzeichnet, daß die Böden (14) der noppenartigen Ausformungen (12) diese öffnungen (21) aufweisen.9. Composite building board according to claim 1, 6 or 7, the trough-shaped reinforcement has openings with pressed-in edges for anchoring in the filler, characterized in that the bottoms (14) of the knob-like formations (12) have these openings (21). 10. Verbundbauplatte nach Anspruch 1, 2 und 9, dadurch gekennzeichnet, daß die öffnungen (21) in den Böden (14) der noppenartigen Ausformungen (12) durch das Bodenelement (15) nach außen verschlossen sind.10. Composite building board according to claim 1, 2 and 9, characterized in that the openings (21) in the bottoms (14) of the knob-like formations (12) are closed to the outside by the bottom element (15). 11. Verbundbauplatte nach Anspruch 1, dadurch gekennzeichnet, daß die noppenartigen Ausformungen (12) an ihrer Unterseite mit warzenförmigen Schweißvorsprüngen (17) zum Anpunkten des Bodenelements (15) versehen sind.11. Composite building board according to claim 1, characterized in that the knob-like formations (12) are provided on their underside with wart-like welding projections (17) for dotting the base element (15).
EP85109559A 1984-08-24 1985-07-30 Cantilever composite slab for construction, in particular for double bottom Expired EP0173095B1 (en)

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AT85109559T ATE44065T1 (en) 1984-08-24 1985-07-30 SELF-SUPPORTING COMPOSITE PANEL, ESPECIALLY FOR RAISED FLOORS.

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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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EP0173095A3 EP0173095A3 (en) 1987-03-25
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EP (1) EP0173095B1 (en)
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ES288739U (en) 1986-01-16
DE3431118C1 (en) 1985-04-04
ES288739Y (en) 1986-10-01
EP0173095B1 (en) 1989-06-14
CA1251944A (en) 1989-04-04
ATE44065T1 (en) 1989-06-15
US4640854A (en) 1987-02-03
EP0173095A3 (en) 1987-03-25

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