EP2337909B1 - Bodenaufbau mit integriertem hohlraum für versorgungsleitungen - Google Patents

Bodenaufbau mit integriertem hohlraum für versorgungsleitungen Download PDF

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Publication number
EP2337909B1
EP2337909B1 EP09781876.9A EP09781876A EP2337909B1 EP 2337909 B1 EP2337909 B1 EP 2337909B1 EP 09781876 A EP09781876 A EP 09781876A EP 2337909 B1 EP2337909 B1 EP 2337909B1
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EP
European Patent Office
Prior art keywords
floor
metal
core
structure according
floor structure
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.)
Not-in-force
Application number
EP09781876.9A
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English (en)
French (fr)
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EP2337909A1 (de
Inventor
Louis-Guy Cajot
Jules Mathieu
Denis Zago
Romain Keiser
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.)
ArcelorMittal Commercial Sections SA
Liberty Liege Dudelange LU SA
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ArcelorMittal Dudelange SA
ArcelorMittal Commercial Sections SA
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Publication of EP2337909A1 publication Critical patent/EP2337909A1/de
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/023—Separate connecting devices for prefabricated floor-slabs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/001—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by provisions for heat or sound insulation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
    • E04B9/045—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like being laminated
    • 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

Definitions

  • the present invention relates to a floor structure with an integrated vacuum for technical installations. It relates in particular to a floor structure comprising: metal support beams; a raised technical floor consisting of removable slabs resting on adjustable supports, which forms the upper surface of the floor; and a suspended ceiling sized to form a fire screen below the supporting metal beams, which forms the bottom surface of the floor.
  • Such floors are well known in multi-storey office buildings.
  • the separation between floors is done using a separation slab that is supported by the metal beams.
  • This separation slab consists of a reinforced concrete slab directly supported by metal beams or, most often, a steel-concrete composite slab, in which a reinforced concrete slab is supported by profiled steel sheets. , which are themselves supported by the metal beams.
  • the suspended ceiling is a fire screen below the metal support beams and the separation slab. It must ensure the stability of the floor in case of fire on the lower floor.
  • the raised technical floor is mounted on the concrete slab. That is, the slabs of the elevated raised floor are supported by means of their adjustable supports arranged on the concrete of the separation slab, so as to create a vacuum for technical installations which extends from the underside of slabs raised raised floor at the top of the concrete slab partition.
  • the lower void between the suspended ceiling and the partition slab is, in such a floor where the suspended ceiling serves as a fire screen, hardly used as a technical vacuum. Indeed, because of severe requirements in relation to the screen cutter fire function of the ceiling suspended, the latter can have only a limited number of trap doors, which makes access to this lower void quite complicated.
  • a floor structure with integrated vacuum for technical installations comprises: support metal beams; a raised technical floor consisting of slabs resting on adjustable supports, which forms the upper surface of the floor; and a suspended ceiling sized to form a fire screen below the supporting metal beams, which forms the bottom surface of the floor.
  • Metal joists are arranged between the wings of the metal support beams.
  • the slabs of the elevated raised floor are supported at their corners with their adjustable supports fixed directly to these joists, so as to create an integrated vacuum for technical installations which extends in height from the underside of the slabs to the upper face of the suspended ceiling, without additional horizontal separation between the two. At least some of the slabs of the raised technical floor are easily removable to give access from the top to the integrated vacuum for technical installations.
  • a floor structure has a generous technical space and easily accessible, while ensuring, including through a suspended ceiling which should in principle not have inspection hatches, good fire protection of the metal bearing structure of the floor.
  • the omission of a concrete or concrete / steel partition slab also substantially reduces the weight of the floor. Comparing a structure according to the invention to that described in the document document WO 2004/092498 it is found that a structure according to the invention allows in particular to reduce the mounting height of the floor structure.
  • the support metal beams and the joists have in their soul passage openings for ducts and pipes. These openings allow easy passage of ducts and pipes of all kinds and lighten the floor even more.
  • the suspended ceiling is preferably sized to form a 120-minute fire-resistant screen when exposed to a fire on the lower side (for example: a suspended ceiling certified REI 120 according to European standards).
  • the raised technical floor is advantageously sized to form a 120-minute fire-resistant screen when exposed to a fire on the upper side (for example: a raised technical floor REI 120 certified according to European standards).
  • the suspended ceiling is also advantageously sized to withstand a temporary overload of at least 1000 N / m 2 , when working in vacuum for technical installations.
  • a preferred embodiment of the suspended ceiling is formed with panels comprising an insulating core and non-combustible, the lower face and the upper face are each coated with a metal sheet provided with flanges partially covering the edges of the core. At least one of these core edges comprises a connecting key made of a reinforced mineral material, which is bordered by the edges of the two metal sheets.
  • two panels are arranged to have two wrenches facing each other, thus forming a lower connection groove below the wrenches and an upper connection groove above the wrenches. fitting.
  • a metal section which is attached to at least one of the two keys and which covers the joint between the two keys.
  • the metal connecting section fixed in the upper connection groove advantageously serves as a fastener for suspension means.
  • the panels and the fittings parts can be prefabricated standard elements, which can be assembled on site without particular craftsmanship.
  • the ceiling panels can be relatively large in size.
  • a panel may for example have a surface greater than 2 m 2 (for example: 120x200 cm panel is perfectly possible), while having a high mechanical stability and a reasonable weight (for example of the order of 400 to 600 N / m 2 ).
  • These large panels not only allow rapid ceiling mounting but also result in a reduction in the total length of joints between panels, which naturally has a favorable effect on the fire resistance of the ceiling.
  • One of the two keys is preferably wider than the other, and the connecting metal profiles are attached to the widest key.
  • the metal fitting section has a central section "U", whose base is fixed with screws to at least one of the two keys and covers the seal between the two keys.
  • the metal fitting section arranged in the upper connection groove advantageously has two outer lateral wings resting on the metal sheet.
  • the suspension means comprise at least one fixing rod; and at least one fixing plate.
  • the latter is fixed by means of screws on the metal connecting profile in the upper connection groove and comprises at least one fixing point for the fixing rod.
  • the metal fitting section arranged in the lower connection groove advantageously has a "U" section with two inner wings serving to support a cover plate, which is screwed onto the metal connecting section.
  • This cover plate is preferably a carbon steel plate coated with an alloy composed of aluminum and zinc, with an intumescent band fixed on the upper surface of the cover plate. It protects the screw heads attaching metal profile fitting to the fitting key against fire heat.
  • the metal sheet serving as envelope to the core is advantageously a thin sheet (thickness of the order of 0.6 to 1.3 mm) made of carbon steel, which is coated with an alloy consisting predominantly of aluminum and zinc .
  • this alloy comprises between 53 and 57% of aluminum, 41 and 46% of zinc and 1 and 2% silicon.
  • a preferred alloy comprises 55% aluminum, 43.4% zinc and 1.6% silicon.
  • the insulating and non-combustible core of a panel advantageously comprises a sandwich structure having: on the underside side, a noncombustible, cementitious or fiberglass-reinforced carrier board reinforced with fibers, having a good resistance to flexion and compression; and on the upper side side, a non-combustible thermal insulation layer, based on cellular glass, having low thermal conductivity and low density.
  • the carrier panel and the thermal insulation layer are preferably assembled by bonding using an elastic adhesive.
  • Such a panel provides not only excellent thermal insulation and high mechanical strength, but is also made of easily recyclable materials (steel and mineral materials).
  • the sandwich structure of the core is preferably framed by framing members of a reinforced mineral material. These frame members, which form the edges of the core with the connecting keys, are advantageously glued to the edges of the sandwich structure with the aid of an elastic adhesive.
  • the carrier panel and the framing members are advantageously fiber-reinforced cementitious or silico-calcareous products having a good resistance to bending and compression.
  • the metal sheets are advantageously bonded to the insulating core and non-combustible using an elastic adhesive.
  • the front surfaces of the keys are preferably provided with a layer of intumescent paint. This intumescent paint seals the joint between two keys when the suspended ceiling is exposed to a fire.
  • a floor raised technical floor advantageously comprises an insulating core and non-combustible, the lower face and the upper face are each coated with a metal sheet provided with flanges partially covering the edges of the core.
  • the core comprises a sandwich structure having: as a bottom layer, a non-combustible thermal insulation layer, based on cellular glass, having low thermal conductivity and low density; and as a top layer, a fiber-reinforced, cementitious or sand-lime-based non-combustible carrier panel having good bending and compressive strength.
  • This sandwich structure makes it possible to achieve with a relatively light slab a remarkable lift and excellent fire resistance.
  • the load-bearing panel is used for the recovery and distribution of loads in the slab, reduces the deformation of the slab under loads and reduces impact noise.
  • the insulation layer based on cellular glass has excellent thermal insulation capacity, withstands high temperatures without any problems and provides, in cooperation with the carrier panel and the two metal sheets in the sandwich structure, a remarkable lift (by example greater than 4000 N / m2). It will also be appreciated that a slab according to the invention can have relatively large dimensions.
  • a slab according to the invention may for example have a surface greater than 1 m 2 (for example: a 120x120 cm slab is perfectly possible), while having a high mechanical stability, a high operating load (for example of the order of 4000 to 6000 N / m2) and a reasonable weight (for example of the order of 400 to 600 N / m2).
  • These large slabs not only allow rapid assembly of the technical floor but also result in a greater spacing of the joints between slabs, which naturally has a favorable effect on comfort, and in a reduction of the total length of these joints, which has a favorable effect on the fire resistance of the floor.
  • a slab according to the invention guarantees a high hygienic and environmental quality; and it can be made entirely of easily recyclable materials (for example: steel and mineral materials).
  • the sandwich structure of the core of the slab is preferably framed by non-combustible side panels, cement-based or fiber-reinforced silico-limestone, which form the edges of the core. This frame further improves the fire resistance and stabilizes the slab at its edges.
  • the various elements of the slab are advantageously assembled using an elastic organic adhesive.
  • the outer surfaces of the edges of the core of the slab are preferably provided with a layer of intumescent paint. This intumescent paint seals the joints between the slabs when the raised technical floor is exposed to a fire.
  • a slab can include on its upper surface a floor covering, including a tile glued to the upper metal sheet. It can even be delivered with a floor covering, for example a ceramic coating, installed in the factory.
  • the non-combustible thermal insulation layer in raised raised floor slab or suspended ceiling panel, normally has a thermal conductivity between 0.03 and 0.05 W / mK and a dry density of less than 150 kg / m.
  • the load-bearing panel in a floor slab or suspended ceiling panel, preferably has a flexural strength greater than 5 MN / m 2 and a compressive strength perpendicular to the surface of the plate greater than 10 MN / m 2 .
  • the thermal insulation layer is normally at least twice as thick as the load-bearing panel.
  • the carrier panel preferably has a dry density of at least 800 kg / m 3.
  • the elastic adhesive which is used for assembling the various elements in a slab of the raised technical floor or a suspended ceiling panel, is advantageously an organic adhesive including a hydrated mineral filler.
  • This adhesive has sufficient elasticity to compensate or absorb the deformations of a panel or slab and to compensate as much as possible the differential expansions of different materials under the effect of fire heat.
  • the hydrated mineral filler slows heat transfer through the panel or slab by slowly evaporating under the action of fire heat. Then, the organic binder chars, which also seems to slow down heat transfer. It will also be appreciated that the bonding of the various elements improves the lift of a slab or a panel in a notable manner.
  • the metal sheet serving as envelope to the core of a panel or slab is advantageously a thin sheet (thickness of the order of 0.6 to 1.3 mm) of carbon steel, which is coated with a alloy composed mainly of aluminum and zinc.
  • this alloy comprises between 53 and 57% of aluminum, 41 and 46% of zinc and 1 and 2% of silicon.
  • a preferred alloy comprises 55% aluminum, 43.4% zinc and 1.6% silicon.
  • the Fig. 1 shows a cross section of a partition floor 1 between two floors of a building.
  • this separating floor 1 comprises a metal supporting structure formed of supporting metal beams 2 and secondary or joist beams 3, 3 'arranged between the flanges of the supporting metal beams 2.
  • Joists 3, 3 ' are advantageously double T-profiles slightly lower than the support metal beams 2, so as to be arranged between the wings of the support metal beams 2.
  • Both the support metal beams 2, the joists 3, 3 ' have in their souls passage openings 4 to pass ducts and ducts.
  • they are castellated beams obtained by cutting the web of a beam in double T longitudinally along a periodic polygonal or curvilinear line, and reassembling the two beam halves offset longitudinally so as to form the passage openings 4.
  • the upper surface 5 of the floor 1 is constituted by a raised technical floor which is formed by slabs 110, 110 ', which are supported by means of adjustable supports 6 directly on the joists 3, 3'. These adjustable supports 6 are preferably fixed on the joists 3, 3 ', for example using an adhesive.
  • the lower surface 7 of the floor 1 is formed by a suspended ceiling 8.
  • the reference 9 identifies a vacuum for technical installations (for example: sanitary conduits, heating, ventilation and air conditioning installations and ducts, cables for the distribution of electrical energy and for communication networks). This technical void 9 extends from the underside of the slabs 110, 110 'to the upper face of the suspended ceiling 8, without additional horizontal separation between the two.
  • the arrow "h" on the Fig. 1 indicates the maximum height available in this technical space 9.
  • the suspended ceiling 8 is sized to form a fireproof screen below the metal supporting structure. This implies in particular that the suspended ceiling 8 must remain for some time sealed to fire fumes. In order to be able to easily access the technical void 9, without providing in the suspended ceiling 8 access hatches that could involve its sealing against fire fumes, at least some of the floor slabs 110, 110 'are easily removable for give access from above to the technical void 9. It will also be noted that the suspended ceiling 8 is preferably dimensioned to withstand, during work in the technical void 9, a temporary overload of at least 1000 N / m 2 . This greatly facilitates the interventions in the technical vacuum 9, because a man can for example crawl in the technical vacuum 9 and bear directly on the upper surface of the suspended ceiling 8.
  • the suspended ceiling 8 is advantageously sized to form a fire screen 120 minutes when exposed to a fire on the lower side (for example: a suspended ceiling certified REI 120 according to European standards).
  • the elevated raised floor is advantageously sized to form a 120-minute fire-resistant screen when exposed to a fire on the upper side (for example: raised technical floor REI 120 certified according to European standards)
  • the Fig. 2 shows a preferential execution of the suspended ceiling 8.
  • Such a panel 10, 10' normally has a square or rectangular shape.
  • Usual dimensions are p. ex. 60x60 cm, 80x80 cm, 90x90 cm, 120x120 cm, respectively 60x90 cm or 80x120 cm or 120x200 cm, with a preference for panels with large dimensions.
  • the dimensions of the panels 10, 10 'and the joist spacings 3, 3' should preferably be harmonized, to allow easy suspension of the panels 10, 10 '.
  • Each of these panels 10, 10 ' comprises an insulating and non-combustible core 12, 12' whose lower face 14 and the upper face 16 are each coated with a metal sheet 18, 20 provided with flanges 22, 24 partially covering the core 12.
  • This core 12 comprises a sandwich structure having as a bottom layer, a noncombustible carrier panel 28 having a good flexural strength, and as a top layer, a non-combustible thermal insulation layer 26, having a low thermal conductivity and low density.
  • the thermal insulation layer 26 is advantageously constituted by aluminosilicate cellular glass plates without the addition of binders, having a thermal conductivity of approximately 0.04 W / mK, a density of the order of 120 kg / m 3, a compressive strength of the order of 0.7 MN / m 2 and a flexural strength of the order of 0.4 MN / m 2.
  • Such plates which are completely inorganic and are formed without binders, are for example sold by the firm "PITTSBURGH CORNING EUROPE SA" under the designation "FOAMGLAS ® T4". To achieve a fire resistance of 120 minutes, plates 80 mm thick will normally be used.
  • the noncombustible carrier panel 28 is advantageously a cementitious or silico-calcareous panel reinforced with fibers. It has for example a thickness of the order of 12 mm and a density of the order of 1000 kg / m3.
  • This panel may be a poor thermal insulator (thermal conductivity of the order of 0.25 W / mK) but must be incombustible and have good resistance to bending and compression, that is to say a resistance to bending of the order of 6-12 MN / m2 and a compressive strength perpendicular to the surface of the plate of the order of 10-20 MN / m2.
  • At least one of the edges of the core 12, 12 ' comprises a connecting key 30, 30' made of a reinforced mineral material, which is bordered by the flanges 22 and 24 of the two metal sheets 18, 20, respectively the flanges 22 'and 24 of the two metal sheets 18 ', 20'.
  • a connecting key 30, 30' made of a reinforced mineral material, which is bordered by the flanges 22 and 24 of the two metal sheets 18, 20, respectively the flanges 22 'and 24 of the two metal sheets 18 ', 20'.
  • each edge that is to be connected to another panel includes such a fitting key 30, 30 '.
  • two opposite edges of the same panel have keys of different width. On the Fig. 2 it is seen for example that the key 30 of the right edge of the panel 10 is wider than the key 30 'of the left edge of the panel 10'.
  • the sandwich structure of the core 12, 12 ' is framed by framing members 32, 32' made of a reinforced mineral material. These frame members 32, 32 'form the edges of the core 12, 12' with the connecting keys 30, 30 '. They are glued to the edges of the sandwich structure using an elastic adhesive. These framing elements 32, 32 'are preferably fiber-reinforced cementitious or sand-lime-based elements, as is the load-bearing panel 28.
  • the panel 10 is for example assembled as follows.
  • the cellular glass plate 26 is glued on the carrier panel 28.
  • the frame members 32, 32 ' which form the edges of the core 12, 12' with the connecting keys 30, 30 'are glued on the four
  • the metal sheets 18, 20 are bonded to the upper or lower surface of the core 12.
  • the flanges 22, 24 of the metal sheets 18, 20 contribute to maintaining the elements of the core sandwich structure.
  • frame 32, 32 ' securely in place on sandwich structure edges.
  • a second flange 34, 36 at least partially covers the bottom or upper surface of the fitting key 30.
  • an adhesive composed of an organic elastic binder for example a resin of the family of polyols containing conventional amounts of plasticizers, adhesion promoters, stabilizers and catalysts, is preferably used. adds a hydrated inorganic filler, for example trihydrated alumina, and a polymerization reagent.
  • a hydrated inorganic filler for example trihydrated alumina
  • a polymerization reagent for example described in the patent application EP 1283310 .
  • the organic binder must provide sufficient elasticity to compensate for or absorb the deformations of a slab 10, 10 'when it is loaded under normal use and, in case of fire, to compensate as much as possible for differential expansions. different materials of a slab 10, 10 'under the effect of fire heat.
  • the hydrated mineral filler slows the heating of the glue by evaporating slowly under the action of fire heat. Then, the organic binder is carbonized, which also seems to delay the heating of the slab 10, 10 '.
  • the metal sheets 18, 20 forming the facing of the panels 10, 10 ' are preferably thin sheets (thickness 0.6 to 1.3 mm) of carbon steel coated with an alloy composed of aluminum and zinc in substantially equal proportions and a trace of silicon.
  • Such sheets are for example marketed by ArcelorMittal under the name ALUZINC ® sheets.
  • ALUZINC ® sheet coating alloy comprises approximately 55% aluminum, 43.4% zinc and 1.6% silicon.
  • the well-known advantages of these sheets are their remarkable resistance to corrosion and the fact that the natural color and gloss of the coating are preserved for a long time.
  • the two panels 10, 10 ' are arranged so as to have the two fitting keys 30 and 30' facing each other, thus forming a lower connection groove below the fitting keys 30, 30 'and an upper connecting groove above the connecting wrenches 30, 30'.
  • a metal connecting section 40, 42 In each of these two connecting grooves is arranged a metal connecting section 40, 42. The latter is fixed by means of lag screws 44, 46 to the coupling key 30 and covers the joint between the two. keys 30 and 30 '.
  • the metal connecting section 40 arranged in the upper connection groove has a central section "U" 48, of width substantially identical to the width of the upper groove, with two lateral wings 50, 50 'outside, which are supported on the metal sheet 20, respectively 20 ', along the upper groove.
  • the base 52 of the central section 48 in “U” is fixed by means of the screws of the laggable type 44 to the key 30.
  • a fixing plate 54 is fixed on the metal connecting section 40, using self-drilling screws 56, 58, so as to close the central section 48 in "U” upwards.
  • the self-drilling screws 56 pass through the fixing plate 54, the base 52 of the central section 48 "U” of the metal connecting section 40 to be screwed through the second flange 36 of the sheet 18 in the key 30.
  • the self-drilling screws 58 pass through the fixing plate 54 and the lateral flanges 50, 50 'of the connecting metal section 40 to screw through the sheet 18 in the core 12.
  • the reference numeral 60 identifies an attachment point for a suspension rod 62.
  • This fixing point 60 is advantageously a FABRO-RIVEKLE® type embedded nut, which is placed using a riveting device in a hole of the fixing plate 54, and can even be put in place after having fixed the fixing plate 54 to a metal connecting section 40.
  • the suspension rod 62 then comprises a threaded end which is screwed into the embedded nut 60.
  • the Fig. 1 it can be seen that the other end of the suspension rod 62 is supported by means of an adjusting nut in a suspension profile 63 fixed to the lower flange of a joist 3, 3 '.
  • the metal connecting section 42 arranged in the lower connection groove also has a "U" section 64, which has a width substantially identical to the width of the lower groove. Instead of the two outer lateral wings, it has two inner wings 66, 66 'serving to support a cover plate 68.
  • the base 70 of the "U" section 64 is fixed with the help of screws of the pulling type. -Fond 46 key 30.
  • the cover plate 68 which closes the section "U” 64 down flush sheets 18, 18 ', is fixed on the two inner wings 66, 66' using The self-drilling screws 74 pass through the cover plate 68, the inner wings 66, 66 'and the base 70 of the "U" section 64, to screw through the second flange 34 of the plate 18 in the key 30.
  • the reference sign 76 identifies an intumescent strip which is fixed on the upper surface of the cover plate 68.
  • the two metal connecting sections 40, 42, the fixing plate 54 and the covering plate 68 are advantageously coated with an alloy composed of aluminum and zinc, such as the ALUZINC ® sheets mentioned above.
  • such a ceiling may have a fire classification REI 120 (European standards), which means that with a fire defined in the standard, a flameproof, hot and toxic gas is provided for 120 minutes and that, during the same time, the temperature on the surface opposite the fire does not exceed 140 ° C on average and 180 ° C punctually.
  • the suspended ceiling can be easily dimensioned to withstand permanent suspended loads of at least 500 N / m 2 (eg luminaires or other equipment) and a temporary load of at least 1000 N / m 2 ( eg when working in the suspended ceiling void).
  • fire dampers for ventilation / air conditioning systems
  • a suspended ceiling according to the invention has a high hygienic and environmental quality.
  • it can essentially consist of easily recyclable materials (steel and mineral materials).
  • the Fig. 3 shows a joint between two slabs 110 and 110 'of the upper surface of the floor 6.
  • Such slab 110, 110' normally has a square or rectangular shape.
  • Usual dimensions are p. ex. 60x60 cm, 80x80 cm, 120x120 cm, respectively 80x120 cm, with a preference for slabs with large dimensions. Since the slabs are directly supported at their corners on the joists 3, 3 '(see Fig. 1 ), the dimensions of the slabs 110, 110 'and the spacings of the joists 3, 3' are to be harmonized.
  • Each of these slabs 110, 110 comprises an insulating and non-combustible core 112, whose lower face 114 and the upper face 116 are each coated with a metal sheet 118, 120 provided with flanges 122, 124 partially covering the edges 125 of the plate. core 112.
  • This core 112 comprises a sandwich structure having as a lower layer, a thermal insulation layer 126 non-combustible, having a low thermal conductivity and a low density, and as the top layer, a carrier panel 128 non-combustible, having a good resistance to bending and compression.
  • the sandwich structure of the core is framed by non-combustible side panels 130 which form the four edges 125 of the core 112.
  • the thermal insulation layer 126 is, like the thermal insulation layer 26 of the panels 10, advantageously constituted by alumino-silicate cellular glass plates. To achieve a fire resistance of 60 minutes, plates with a thickness of 40 mm and a fire resistance of 11120 minutes, a thickness of 80 mm, will normally be used.
  • the noncombustible carrier panel 128 is, like the support panel 28 of the panels 10, advantageously a cement-based or fiber-lime-based panel.
  • This panel may be a poor thermal insulator (thermal conductivity of the order of 0.125 W / mK) but must be noncombustible and have good resistance to bending and compression, that is to say a resistance to bending of the order of 6-12 MN / m2 and a compressive strength perpendicular to the surface of the plate of the order of 10-20 MN / m2.
  • this carrier panel 128 serves for the distribution of the charges in the composite slab 110, 110 '.
  • the slab 110, 110 ' is assembled as follows.
  • the cellular glass plate 126 is glued to the carrier panel 128.
  • the side panels 130 are glued to the four edges of the core sandwich structure 112.
  • the metal sheets 118, 120 are glued to the upper surface, respectively It is noted that the flanges 122 of the metal sheets 118, 120 contribute to keeping the frame formed by the side panels 130 firmly in place on the sandwich structure edges.
  • These flanges 122 also have a low height so as not to form a thermal bridge in the direction of the thickness of slabs 110, 110 '.
  • glue assembly for slabs 110, 110 ' is preferably used glue described above.
  • the same glue can also be used to glue the adjustable supports 6 on the joists 3, 3 '.
  • the metal sheets 118, 120 forming the outer face of the slabs 110, 110 ' are preferably thin sheets (thickness 0.6 to 1.3 mm) of carbon steel coated with an alloy composed of aluminum and zinc in substantially equal proportions and a trace of silicon, such as metal sheets 18, 20 described above.
  • the reference sign 132 on the Fig. 3 locates an intumescent sealant closing the seal between the slabs 110, 110 '.
  • a tested product is for example the product "FIRESTOP 700" from the firm “Dow Corning”. It is a fire-resistant silicone sealant to create expansion joints with a fire resistance of several hours.
  • the reference sign 134 on the Fig. 3 identifies a floor covering, for example a tile.
  • This tile 134 is advantageously glued with the predefined glue directly on the upper metal sheet 120.
  • the slabs can be delivered with the floor covering installed in the factory.
  • a floor constructed with slabs according to the invention may have a fire classification REI 120 (European standards), which means that with a fire defined in the standard, a flame, hot gas and toxic gas tightness is ensured for 120 minutes and that, during the same time, the temperature on the surface opposite the fire does not exceed 140 ° C on average and 180 ° C punctually.
  • the floor can be easily sized to support loads of 5000 N / m 2 .
  • the slabs according to the invention have a high hygienic and environmental quality. In case of fire, they emit very little smoke. In addition, they can consist essentially of easily recyclable materials (for example: steel and mineral substances
  • a floor 1 according to the present invention Compared to a concrete floor (slab and concrete support beams), a floor 1 according to the present invention has multiple advantages.
  • a floor 1 according to the present invention with a technical vacuum 9 with a total height h of 55 cm has a construction height which is about 20 cm lower than that of a concrete floor with false ceiling providing a vacuum of 40 cm. cm below the slab and a raised technical floor providing a 15 cm gap above the slab.
  • the free height of the technical vacuum 9 higher can accommodate in this technical vacuum ducts ventilation and air conditioning larger section and also facilitates the crossing of such ducts.
  • the average dead weight relative to 1 m 2 of floor is more than 7 times higher for a construction of a concrete floor than for a floor 1 according to the present invention.
  • the production rate per team is at least twice as fast for a floor 1 according to the present invention as for a concrete floor.
  • partially or completely remove a floor 1 according to the present invention poses few major problems, which is certainly not the case with a concrete floor.
  • 50, 50 ' outer side wings 1 floor of separation between two floors 52 base of 48 54 fixing plate 2 supporting metal beam 56, 58 self-drilling screws 3, 3 ' joist 60 fixing point for 62 4 passage openings 62 suspension rod 5 upper surface of 1 63 suspension profile over 3, 3 '( Fig.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Engineering & Computer Science (AREA)
  • Building Environments (AREA)

Claims (15)

  1. Fußbodenstruktur (1) mit integriertem Hohlraum (9) für technische Installationen, die Folgendes umfasst:
    tragende Metallträger (2);
    metallische Deckenbalken (3, 3'), die zwischen den Metallträgern (2) angeordnet sind;
    einen erhöhten technischen Boden, der aus Bodenplatten (110, 110') gebildet ist, die auf Unterstützungen aufliegen, der die obere Oberfläche (5) der Fußbodenstruktur bildet; und
    eine abgehängte Decke (8), die so ausgelegt ist, dass sie einen Brandschutzschirm unter den Metallträgern (2) bildet, und die die untere Oberfläche (7) der Fußbodenstruktur bildet, derart, dass ein integrierter Hohlraum (9) für technische Installationen ausgebildet wird, der sich von der unteren Seite der Bodenplatten zu der oberen Seite der abgehängten Decke erstreckt, ohne zwischen diesen eine zusätzliche horizontale Trennung zu schaffen; wobei wenigstens einige der Bodenplatten (110, 110') einfach entfernbar sind, um einen Zugang von oben zum integrierten Hohlraum (9) für technische Installationen zu schaffen;
    dadurch gekennzeichnet, dass
    die metallischen Deckenbalken (3, 3') zwischen den Flanschen der Metallträger (2) angeordnet sind;
    die Bodenplatten (110, 110') des erhöhten technischen Bodens auf Höhe ihrer Ecken mit Hilfe einstellbarer Auflagern (6), die direkt auf den Deckenbalken (3, 3') befestigt sind, unterstützt sind.
  2. Fußbodenstruktur nach Anspruch 1, wobei:
    die Metallträger (2) und die Deckenbalken (3, 3') in ihren Stegen Durchgangsöffnungen (4) für Rohrleitungen und Kanalisationen aufweisen.
  3. Fußbodenstruktur nach Anspruch 1 oder 2, wobei:
    die abgehängte Decke (8) ausgelegt ist, um eine Brandschutzschirm für 120 Minuten zu bilden, wenn sie von der Unterseite einem Brand ausgesetzt ist.
  4. Fußbodenstruktur nach Anspruch 1, 2 oder 3, wobei:
    die abgehängte Decke (8) ausgelegt ist, um eine temporäre Überlast von wenigstens 1000 N/m2 bei Arbeiten in dem Hohlraum (9) für technische Installationen zu tragen.
  5. Fußbodenstruktur nach einem der Ansprüche 1 bis 4, wobei:
    der erhöhte technische Boden ausgelegt ist, um einen Brandschutzschirm für 120 Minuten zu bilden, wenn er von der Oberseite einem Brand ausgesetzt ist.
  6. Fußbodenstruktur nach einem der Ansprüche 1 bis 5, wobei:
    die abgehängte Decke (9) durch Platten (10, 10') gebildet ist, die einen isolierenden und nicht brennbaren Kern (12, 12') enthalten, dessen Unterseite und dessen Oberseite jeweils mit einem Metallblech (18, 18', 20, 20') verkleidet sind, dessen abgebogenen Ränder (22, 24) die Schmalseiten des Kerns (12, 12') abdecken;
    wenigstens eine dieser Schmalseiten des Kerns eine Verbindungsfeder (30, 30') aus einem verstärkten Mineralmaterial umfasst, die von den abgebogenen Rändern (22, 24) der zwei Metallbleche (18, 18', 20, 20') eingesäumt ist;
    zwei Platten (10, 10') in derart angeordnet sind, dass sie zwei Verbindungsfedern (30, 30') haben die einander zugewandt sind, derart dass sie eine untere Verbindungskehle unter den Verbindungsfedern und eine obere Verbindungskehle oberhalb der Verbindungsfedern bilden;
    in jeder dieser zwei Verbindungskehlen ein Metallprofil (40, 42) angeordnet ist, das an wenigstens einer der zwei Verbindungsfedern (30, 30') befestigt ist und die Verbindungsstelle zwischen den zwei Verbindungsfedern (30, 30') abdeckt; und
    das Verbindungsmetallprofil (40, 42), das in der oberen Verbindungskehle befestigt ist, als Befestigung für Aufhängungsmittel (62, 63) dient.
  7. Fußbodenstruktur nach Anspruch 6, wobei:
    das Verbindungsmetallprofil (40, 42) einen zentralen Querschnitt in Form eines "U" hat, dessen Basis mit Hilfe einer Schraube an wenigstens einem der zwei Verbindungsfedern (30, 30') befestigt ist und die Verbindungsstelle zwischen den zwei Verbindungsfedern abdeckt.
  8. Fußbodenstruktur nach Anspruch 6 oder 7, wobei:
    die Verbindung, die in der unteren Verbindungskehle angeordnet ist, außerdem zwei innere Flansche (66, 66') besitzt, die als Auflage für eine Abdeckplatte (68) dienen, die auf das metallische Verbindungsprofil geschraubt ist.
  9. Fußbodenstruktur nach einem der Ansprüche 1 bis 8, wobei der isolierende und nicht brennbare Kern (12, 12') eine Sandwichstruktur aufweist, die umfasst:
    auf der Unterseite eine nicht brennbare Trägerplatte (28) auf Basis von Zement oder Kalksandstein, die mit Fasern verstärkt ist und einen guten Widerstand gegenüber Biegen und Kompression hat;
    und
    auf der Oberseite eine nicht brennbare Wärmeisolationsschicht (26) auf Basis von Schaumglas, die eine geringe spezifische Wärmeleitfähigkeit und eine geringe Dichte hat;
    wobei die Trägerplatte (28) und die Wärmeisolationsschicht (26) durch Kleben mit Hilfe eines elastischen Klebstoffs zusammengefügt sind.
  10. Fußbodenstruktur nach Anspruch 9, wobei:
    die Sandwichstruktur des Kerns (12, 12') von Umrahmungselementen (32, 32') aus einem verstärkten Mineralmaterial umgeben ist; wobei diese Umrahmungselemente (32, 32'), die mit den Verbindungsfedern (30, 30') die Schmalseiten des Kerns bilden, auf die Ränder der Sandwichstruktur mit Hilfe eines elastischen Klebstoffs geklebt sind.
  11. Fußbodenstruktur nach einem der Ansprüche 1 bis 10, wobei eine Bodenplatte des erhöhten technischen Bodens Folgendes umfasst:
    einen isolierenden und nicht brennbaren Kern (112), dessen Unterseite (114) und dessen Oberseite (116) jeweils mit einem Metallblech (118, 120), das mit Rippen (122, 124) versehen ist, die die Schmalseiten (125) des Kerns (112) teilweise abdecken, beschichtet sind;
    wobei der isolierende und nicht brennbaren Kern (112) eine Sandwichstruktur aufweist, die umfasst:
    als untere Schicht eine nicht brennbare Wärmeisolationsschicht (126) auf Basis von Schaumglas, die eine geringe spezifische Wärmeleitfähigkeit und eine geringe Dichte besitzt; und als obere Schicht eine nicht brennbare Tragplatte (128) auf Basis von Zement oder an SiO2 reichem Kalkstein, die mit Fasern verstärkt ist und einen guten Widerstand gegenüber Biegen und Kompression hat.
  12. Fußbodenstruktur nach Anspruch 11, wobei:
    die Sandwichstruktur des Kerns (112) von Umrahmungselementen (130) aus einem verstärkten Mineralmaterial umgeben ist; wobei diese Umrahmungselemente, die mit den Verbindungsfedern die Schmalseiten des Kerns bilden, auf die Ränder der Sandwichstruktur mit Hilfe eines elastischen Klebstoffs geklebt sind.
  13. Fußbodenstruktur nach einem der Ansprüche 6 oder 11, wobei:
    die nicht brennbare Wärmeisolationsschicht (126) eine spezifische Wärmeleitfähigkeit im Bereich von 0,03 bis 0,05 W/(mK) und eine Dichte im trockenen Zustand, die kleiner als 150 kg/m3 ist, hat; und
    die nicht brennbare Tragplatte (128) einen Widerstand gegenüber Biegen, der größer als 5 MN/m2 ist, und einen Widerstand gegenüber Kompression senkrecht zu der Oberfläche der oberen Platte, der größer als 10 MN/m2 ist, hat.
  14. Fußbodenstruktur nach einem der Ansprüche 11 bis 13, wobei:
    die Verbindungsstellen zwischen den Bodenplatten (110, 110') mit einem feuerbeständigen Dichtungsprodukt (132) verschlossen sind.
  15. Fußbodenstruktur nach einem der Ansprüche 6 bis 14, wobei:
    das Metallblech (18, 18', 20, 20', 118, 120) ein dünnes Blech aus Kohlenstoffstahl ist, das mit einer Legierung, die Aluminium im Bereich von 53-57 %, Zink im Bereich von 41-46 % und Silizium im Bereich von 1 bis 2 % enthält, beschichtet ist.
EP09781876.9A 2008-09-10 2009-08-14 Bodenaufbau mit integriertem hohlraum für versorgungsleitungen Not-in-force EP2337909B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU91478A LU91478B1 (fr) 2008-09-10 2008-09-10 Structure de plancher avec un vide intégré pour installations techniques
PCT/EP2009/060576 WO2010028930A1 (fr) 2008-09-10 2009-08-14 Structure de plancher avec un vide intégré pour installations techniques

Publications (2)

Publication Number Publication Date
EP2337909A1 EP2337909A1 (de) 2011-06-29
EP2337909B1 true EP2337909B1 (de) 2013-05-08

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Application Number Title Priority Date Filing Date
EP09781876.9A Not-in-force EP2337909B1 (de) 2008-09-10 2009-08-14 Bodenaufbau mit integriertem hohlraum für versorgungsleitungen

Country Status (3)

Country Link
EP (1) EP2337909B1 (de)
LU (1) LU91478B1 (de)
WO (1) WO2010028930A1 (de)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9809547D0 (en) * 1998-05-06 1998-07-01 Mss Clean Technology Limited Fire resistant ceiling and a ceiling panel for a fire resistant ceiling
DE20107593U1 (de) * 2000-05-09 2001-09-13 Schraps Guenter Großformatige Arbeits-, Wand- oder Bodenplatte
US7546715B2 (en) * 2001-06-21 2009-06-16 Roen Roger C Structurally integrated accessible floor system
DE60117358D1 (de) * 2001-11-08 2006-04-27 Izquierdo Ramon Collado Ein Boden
CA2464062C (en) * 2004-04-13 2012-01-17 Maxcess Technologies Inc. Modular access floor system with airseal gasket

Also Published As

Publication number Publication date
LU91478B1 (fr) 2010-03-11
EP2337909A1 (de) 2011-06-29
WO2010028930A1 (fr) 2010-03-18

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