EP0171971A2 - Dalle de construction - Google Patents

Dalle de construction Download PDF

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Publication number
EP0171971A2
EP0171971A2 EP85305434A EP85305434A EP0171971A2 EP 0171971 A2 EP0171971 A2 EP 0171971A2 EP 85305434 A EP85305434 A EP 85305434A EP 85305434 A EP85305434 A EP 85305434A EP 0171971 A2 EP0171971 A2 EP 0171971A2
Authority
EP
European Patent Office
Prior art keywords
shell
building panel
core
strip
members
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.)
Withdrawn
Application number
EP85305434A
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German (de)
English (en)
Other versions
EP0171971A3 (fr
Inventor
Clifford Sidney Bundy
Brian Hugh Turner
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.)
Individual
Original Assignee
Individual
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
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Application filed by Individual filed Critical Individual
Publication of EP0171971A2 publication Critical patent/EP0171971A2/fr
Publication of EP0171971A3 publication Critical patent/EP0171971A3/fr
Withdrawn legal-status Critical Current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

Definitions

  • This invention relates to building panels and particularly to panels which are suitable for use in floors of the raised platform type which are supported a short distance above a sub-floor, usually on pedestals, so as to enable wiring and other services to be run beneath the floor.
  • a typical raised platform floor generally comprises a series of square panels, common sizes being 600mm square or 750mm square, supported on an array of pedestals, each pedestal having a cruciform support member at its upper end, which is adapted to receive the adjacent corners of four floor panels.
  • the floor panels are so constructed, that they are preferably sufficiently rigid to take the required loads without the necessity for any grid of bridging support members or stringers between the pedestals, so that an entire floor can be constructed using only the pedestals and the floor panels themselves.
  • One common type of floor panel which is used in flooring systems of this kind consists of a core of high density material such as chipboard about 30-35mm thick, encased within a galvanised steel outer shell, the thickness of the steel usually being 1 mm or more.
  • the corners of the panel each rest on the support surface of one of the pedestals and abut against the cruciform structure which serves to locate the corner of each panel relative to those of the other three adjacent panels.
  • the shell may for example be formed of a base tray with upstanding side wa-Ils, and a top plate with downwardly depending side walls which fit closely around the upper edges of the side walls of the base tray.
  • a panel of this kind is shown in published British patent application serial no. 2130615.
  • chipboard as a core material has, however, been found to entail certain disadvantages in use, particularly in respect of the load bearing capability of the panels, since chipboard is relatively weak in shear, and is also inhomogeneous so that a number of small panels cut from the same larger sheet may have totally different strength characteristics.
  • the present invention seeks to provide a building panel of the general type described above, having a core with considerably improved strength characteristics by comparison with traditional core materials.
  • the present invention provides a building panel comprising a pair of encasement members adapted to fit together to form a shell which encloses a core, the core comprising a reinforcing insert structure of strip material which is arranged within the shell so that the plane of the strip is normal to the major surfaces of the shell, and a settable filler material which is initially in a fluent form, so that it may be poured into the insert structure and can subsequently be set into a solid form.
  • the fluid or pourable material can consist depending on the purpose for which the structural panel is employed, for example, of concrete, mineral substances with a cement binder (including aerated cement), plaster of Paris, or plaster-bound mineral substances, synthetic resin compositions, organic fibrous materials with synthetic resin binders, synthetic resin compositions with fillers embedded therein, such as, for example, bloated concrete or purlite, wood concrete or wood fibres and cement, asbestos cement or the like.
  • Additional solid additives may also be included, such as woodchips in the case of plaster of paris, or polystyrene or vermiculite granules in the case of epoxy.
  • the shell is assembled from two tray-like members made of sheet steel, which may be galvanised or aluzinc coated, and the insert is made of steel strip whose width is equal to the internal depth of the finished panel.
  • the insert structure may take the form of a loosely wound spiral, a honeycomb, cruciform and/or diagonal or other structure which is such as to provide reinforcement of the panel at regular intervals.
  • the insert may be spot welded or bonded into one of the trays, before the filler is poured into the interstices of the structure.
  • a building panel comprising a pair of encasement members adapted to fit together to form a shell which encloses a core, the core comprising a foam formed from a mixture of filler including synthetic resin and a catalyst which is placed in one of the encasement members before the two members are fitted together, so that the core is formed by subsequent foaming and setting of the filler "in situ”.
  • the panel also includes an internal reinforcement structure comprising an insert of strip material arranged within the shell with the plane of the strip normal to the major surfaces of the shell, the strip material being positioned in on of the encasement members before the addition of the filler.
  • the reinforcement comprises a first pair of mutually perpendicular reinforcing strip members each of which extends diagonally from one corner of the shell to the opposite corner, and a second pair of mutually perpendicular strip members each of which extends between the mid points of opposite sides of the shell, so that the whole reinforcement forms a "Union Flag" formation.
  • one of the encasement members may include integral reinforcing formations such as embossed ridges or other patterns.
  • the assembled panel comprises a base tray 2 having upstanding side walls 4, and a top plate 6 having downwardly depending side walls 8 which are arranged to fit over the side walls 4 of the base tray, the general construction of the two members being similar to that shown in published British patent application no. 2130615.
  • the panels are preferably of sheet steel of 0.5 - 1.0mm thickness.
  • the illustrated panel differs from that of the prior specification in that the core 10 consists of a solidified filler material which is reinforced by steel strips 12 which are arranged in a regular pattern in the base tray. As can be seen from the drawings, the width of these strips is equal to the internal thickness of the panel so as to provide a structural reinforcement and their thickness is preferably 1mm to 2.0mm.
  • the arrangement of the steel strip 12 within the panel may take various forms, as illustrated in Figures 2 to 6.
  • One form of reinforcing structure is shown in Figure 2, in which the steel strip is in the form of a continuous coil 14 which fills the whole of the base tray except for the extreme corners.
  • the spaces between the successive coils may be of the order of 1 to 3 inches.
  • Suitably shaped pieces of strip 16 may be. positioned in the corners to reinforce these regions, as shown in the drawing.
  • This particular type of reinforcement has the advantage that almost the whole of the reinforcing structure can be made from one piece of strip material.
  • reinforcing structure can be formed from variously shaped "honeycombs" of strip material, that of Figure 3, for example, comprising a plurality of straight strips which are notched so that they can be fitted together to form a square matrix, and of course it will be appreciated that the same kind of construction may be used with the strips oriented at 45 0 to the side walls of the base tray, so as to provide a "diamond shaped" reinforcing structure.
  • Figure 4 The structure of Figure 4 comprises a series of hexagonal cells which are formed from strips which each have a series of 120 0 bends in them. These may have their facing "flats" spot-welded together, or may be suitably interlocked by notching them in a similar fashion to the strips of Figure 3.
  • Figure 5 shows an insert structure which is formed from serpentine strips, and again the abutting surfaces of these may be spot welded together, before they are placed in the base tray.
  • Figure 6 shows a reinforcing structure having a "Union Flag" configuration, consisting of one pair of strips which extend across the diagonals of the panel, and another pair which extend across the panel at right-angles to each other, so as to join the mid-points of opposite sides.
  • the strips may be suitably interlocked by slotting or other known methods, at the centre. This arrangement has been found to possess excellent strength characteristics, particularly in combination with a polyester or other synthetic resin type of filler (see below).
  • the insert is first positioned in the base tray, and bonded in place, and then the filler material is poured into the interstices of the insert.
  • the filler may for example be plaster of paris mixed with woodchips, epoxy resin with polystyrene granules, or airated concrete or polyester resin with a filler.
  • the core may be formed first in a separate mould by placing the inserts into the mould, and pouring in the filler, and then removing the core from the mould when it has solidified and bonding the base tray and top plate around it.
  • a further alternative material which has the advantage that the top plate can be added before it has solidified, is a casting resin such as polyester resin.
  • a suitable mixture comprises about 50-70% by weight of polyester resin, 5-10% of --styrene as a "diluent" and 15-40% of vermiculite (e.g. "Micafil”), with a small amount of proprietary catalyst.
  • a panel including a core of this type is particularly simple and quick to manufacture.
  • the insides of the base tray and top plate are first sprayed with a polyurethane adhesive which is allowed to dry until it is just tacky, and the reinforcing strips (preferably as shown in Figure 6) are placed in the base tray and also lightly sprayed with adhesive.
  • the resin mixture is then poured into the base tray and spread evenly overfilling the base tray by approx 10%, the top plate is immediately added and the whole assembly placed in a hydraulic press at approx 200 psi for about 30 minutes, which is the expected reaction time for the resin.
  • the press may also be heated to speed up the reaction. This results in a particularly light, rigid panel.
EP85305434A 1984-07-30 1985-07-30 Dalle de construction Withdrawn EP0171971A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB848419385A GB8419385D0 (en) 1984-07-30 1984-07-30 Building panel
GB8419385 1984-07-30

Publications (2)

Publication Number Publication Date
EP0171971A2 true EP0171971A2 (fr) 1986-02-19
EP0171971A3 EP0171971A3 (fr) 1988-03-09

Family

ID=10564663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85305434A Withdrawn EP0171971A3 (fr) 1984-07-30 1985-07-30 Dalle de construction

Country Status (3)

Country Link
EP (1) EP0171971A3 (fr)
DE (1) DE171971T1 (fr)
GB (1) GB8419385D0 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2228954A (en) * 1989-01-05 1990-09-12 Sas Group Holdings Ceiling panels
WO1990010769A1 (fr) * 1989-03-13 1990-09-20 Enrico Morettin Panneau de plancher d'acces composite
FR2683242A1 (fr) * 1991-11-06 1993-05-07 Strulik Wilhelm Dalle modulaire pour cloison horizontale.
EP1039061A3 (fr) * 1999-03-26 2003-01-29 Benetti Impianti S.r.l. Elément de recouvrement, en particulier pour un recouvrement aéré ou flottant de murs, planchers, toits ou similaires
EP1589159A2 (fr) * 2004-04-23 2005-10-26 LG Chem. Ltd. Système de faux plancher surélevé comprenant des panneaux-sandwichs

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2206848A1 (de) * 1972-02-14 1973-08-30 Toni Eisert Term bau-system
GB2130615A (en) * 1982-11-23 1984-06-06 Clifford Sidney Bundy Floor panels
EP0125914A2 (fr) * 1983-05-13 1984-11-21 Kabushiki Kaisha Toshiba Panneau pour accès libre au câble de signalisation et câble d'énergie

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE886684A (fr) * 1980-12-16 1981-04-16 Dynabat S P R L Dalle de plancher amovible

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2206848A1 (de) * 1972-02-14 1973-08-30 Toni Eisert Term bau-system
GB2130615A (en) * 1982-11-23 1984-06-06 Clifford Sidney Bundy Floor panels
EP0125914A2 (fr) * 1983-05-13 1984-11-21 Kabushiki Kaisha Toshiba Panneau pour accès libre au câble de signalisation et câble d'énergie

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2228954A (en) * 1989-01-05 1990-09-12 Sas Group Holdings Ceiling panels
GB2228954B (en) * 1989-01-05 1993-05-19 Sas Group Holdings Improvements in panels for ceilings
WO1990010769A1 (fr) * 1989-03-13 1990-09-20 Enrico Morettin Panneau de plancher d'acces composite
FR2683242A1 (fr) * 1991-11-06 1993-05-07 Strulik Wilhelm Dalle modulaire pour cloison horizontale.
EP0541437A1 (fr) * 1991-11-06 1993-05-12 Wilhelm Paul Strulik Dalle modulaire pour cloison horizontale
EP1039061A3 (fr) * 1999-03-26 2003-01-29 Benetti Impianti S.r.l. Elément de recouvrement, en particulier pour un recouvrement aéré ou flottant de murs, planchers, toits ou similaires
EP1589159A2 (fr) * 2004-04-23 2005-10-26 LG Chem. Ltd. Système de faux plancher surélevé comprenant des panneaux-sandwichs
EP1589159A3 (fr) * 2004-04-23 2008-04-09 LG Chem. Ltd. Système de faux plancher surélevé comprenant des panneaux-sandwichs

Also Published As

Publication number Publication date
EP0171971A3 (fr) 1988-03-09
DE171971T1 (de) 1986-08-14
GB8419385D0 (en) 1984-09-05

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