EP2337909A1 - Structure de plancher avec un vide intégré pour installations techniques - Google Patents
Structure de plancher avec un vide intégré pour installations techniquesInfo
- Publication number
- EP2337909A1 EP2337909A1 EP09781876A EP09781876A EP2337909A1 EP 2337909 A1 EP2337909 A1 EP 2337909A1 EP 09781876 A EP09781876 A EP 09781876A EP 09781876 A EP09781876 A EP 09781876A EP 2337909 A1 EP2337909 A1 EP 2337909A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- floor
- metal
- floor structure
- core
- combustible
- 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
Links
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
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- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/024—Sectional false floors, e.g. computer floors
- E04F15/02405—Floor panels
- E04F15/02417—Floor panels made of box-like elements
- E04F15/02423—Floor panels made of box-like elements filled with core material
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 separation slab is in such a floor where the suspended ceiling performs the function of 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.
- An object of the present invention is to provide a floor separation structure between floors which has a generous technical vacuum and easily accessible, while ensuring good fire protection of a metal bearing structure of the floor.
- this objective is achieved by a floor structure according to claim 1.
- a floor structure with an integrated vacuum for technical installations comprises: metal support 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 metal support beams.
- the slabs of the raised technical floor are supported by means of their adjustable supports directly on these joists, so as to create an integrated vacuum for technical installations which extends in height from the lower face 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.
- such a floor structure has a generous and easily accessible technical vacuum, while ensuring, in particular through a suspended ceiling which should in principle not present inspection hatches, good fire protection of the supporting metal structure of the floor.
- the omission of a concrete or concrete / steel partition slab also substantially reduces the weight of the floor.
- the support metal beams and 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 fire screen 120 minutes when exposed to 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 further 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 fixed on the widest key.
- the metal fitting section has a central section "U"
- the 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 preferably has a section "U" with two inner wings serving as a support for a cover plate, which is screwed onto the metal fitting 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) of carbon steel, which is coated with an alloy composed 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 side of the underside, a noncombustible carrier panel, based on cement or silico-limestone, reinforced with fibers, having a good resistance to bending 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 products based on cement or silico-limestone, reinforced by fibers, 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.
- An elevated raised floor slab 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 sand-lime reinforced with fibers, 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 songs of the core of the slab are preferably provided with an intumescent paint layer. 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 noncombustible thermal insulation layer in a slab raised raised floor or suspended ceiling panel, normally has a thermal conductivity between 0.03 and 0.05 VWmK and a density in the dry state lower 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 glue 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 about 0.6 to 1.3 mm) made of carbon steel, which is coated.
- an alloy composed mainly of aluminum and zinc Preferably 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.
- Fig. 1 a cross section of a floor separating two floors according to the present invention
- Fig. 2 a cross-section of a preferred embodiment of the lower floor surface according to FIG. 1;
- Fig. 3 a cross section of a preferred embodiment of the upper floor surface according to FIG. 1.
- FIG. 1 shows a cross section of a separating floor 1 between two floors of a building.
- this separating floor 1 according to the present invention 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 with 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" in FIG. 1 indicates the maximum height available in this technical space 9.
- the suspended ceiling 8 is sized to form a fire 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 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)
- FIG. 2 shows a preferred embodiment of the suspended ceiling 8.
- a joint is seen between two panels 10 and 10 '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 '.
- This core 12 comprises a sandwich structure having as a bottom layer, a non-combustible carrier panel 28 having a good flexural strength, and as the upper layer, a non-combustible thermal insulation layer 26, having low thermal conductivity and low density.
- the thermal insulation layer 26 is advantageously made of aluminosilicate cell glass plates without addition of binders, having a thermal conductivity of about 0.04 W / mK, a density of the order of 120 kg. / m3, 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 non-combustible carrier panel 28 is preferably a cement-based panel or silico-limestone, 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' 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' 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. In FIG. 2, we see 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 frame members 32, 32' 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 usual amounts of plasticizers, adhesion promoters, stabilizers, catalysts to which is added a hydrated inorganic filler, for example trihydrated alumina, and a polymerization reagent.
- an organic elastic binder for example a resin of the family of polyols containing usual amounts of plasticizers, adhesion promoters, stabilizers, catalysts to which is added a hydrated inorganic filler, for example trihydrated alumina, and a polymerization reagent.
- the organic binder must provide sufficient elasticity to compensate or absorb the deformations of a slab 10, 10 'when it is loaded in normal use. and, in the event of a fire, to compensate as much as possible for the differential expansions of the different materials of a slab 10, 10 'under the effect of the fire heat.
- the hydrated mineral filler slows the glue's heat by evaporating slowly under the action of the fire
- the metal sheets 18, 20 forming the facing of the panels 10, 10 ' are preferably thin sheets (0.6 to 1, 3 mm thick) 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.
- the 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.
- FIG. 2 it can be seen that the two panels 10, 10 'are arranged so as to have the two coupling keys 30 and 30' facing each other, thus forming a lower connection groove below the connection 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 outer lateral wings 50, 50 ', which are resting 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 attachment point 60 is advantageously an embedded nut type FABRO-RIVEKLE ®, which is placed using a river apparatus in a hole of the fixing plate 54, and can even be put in place after having fixed the fastening plate 54 to a metal fitting section 40.
- the suspension rod 62 then comprises a threaded end which is screwed into the drilled nut. 60.
- 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 attached to the lower flange of a joist 3, 3 '.
- the metal fitting section 42 arranged in the lower connection groove also has a section "U" 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 cover plate 68 are advantageously coated with an alloy consisting of aluminum and zinc, such as 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 gases is ensured during 120 minutes and that, during the same time, the temperature on the surface opposite the fire does not exceed 140 0 C average and 180 0 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).
- a suspended ceiling according to the invention has a high hygienic and environmental quality. In addition, it can essentially consist of easily recyclable materials (steel and mineral materials).
- FIG. 3 shows a joint between two slabs 110 and 110 'of the upper surface of the floor 6.
- a 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 joist spacings 3, 3 'are to be harmonized.
- Each of these slabs 110, 110 comprises an insulating core 112 and non-combustible, the 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 core 112.
- This core 112 comprises a sandwich structure having as a lower layer, a non-combustible thermal insulation layer 126, having a low thermal conductivity and a low density, and as a top layer, a non-combustible carrier panel 128, having 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, as the thermal insulation layer 26 of the panels 10, advantageously made of aluminosilicate 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 carrier panel 28 panels 10, preferably a cement-based panel or silico-limestone, reinforced with fibers.
- This panel may be a poor thermal insulator (thermal conductivity of the order of 0.125 VWmK) but must be noncombustible and have good resistance to bending and compression, that is to say a resistance to bending of the body. 6-12 MN / m2 and compressive strength perpendicular to the plate surface 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 the 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 in 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 in 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 seal against flames, hot and toxic gases is ensured for 120 minutes and that, during the same time, the temperature on the surface opposite the fire does not exceed 140 0 C on average and 180 0 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 may consist essentially of easily recyclable materials (for example: steel and mineral materials).
- 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 vacuum of 15 cm 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.
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Abstract
Description
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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 true EP2337909A1 (fr) | 2011-06-29 |
EP2337909B1 EP2337909B1 (fr) | 2013-05-08 |
Family
ID=40638131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09781876.9A Not-in-force EP2337909B1 (fr) | 2008-09-10 | 2009-08-14 | Structure de plancher avec un vide intégré pour installations techniques |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2337909B1 (fr) |
LU (1) | LU91478B1 (fr) |
WO (1) | WO2010028930A1 (fr) |
Family Cites Families (5)
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, Günter, 99880 Waltershausen | 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 (fr) * | 2004-04-13 | 2012-01-17 | Maxcess Technologies Inc. | Systeme de faux plancher modulaire avec joint etanche a l'air |
-
2008
- 2008-09-10 LU LU91478A patent/LU91478B1/fr active
-
2009
- 2009-08-14 EP EP09781876.9A patent/EP2337909B1/fr not_active Not-in-force
- 2009-08-14 WO PCT/EP2009/060576 patent/WO2010028930A1/fr active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2010028930A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2010028930A1 (fr) | 2010-03-18 |
EP2337909B1 (fr) | 2013-05-08 |
LU91478B1 (fr) | 2010-03-11 |
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