FR2594156A1 - Absorbent noise-reducing box element - Google Patents
Absorbent noise-reducing box element Download PDFInfo
- Publication number
- FR2594156A1 FR2594156A1 FR8602117A FR8602117A FR2594156A1 FR 2594156 A1 FR2594156 A1 FR 2594156A1 FR 8602117 A FR8602117 A FR 8602117A FR 8602117 A FR8602117 A FR 8602117A FR 2594156 A1 FR2594156 A1 FR 2594156A1
- Authority
- FR
- France
- Prior art keywords
- panel
- box according
- noise
- absorbent
- fibrous layer
- 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
- 230000002745 absorbent Effects 0.000 title claims abstract description 21
- 239000002250 absorbent Substances 0.000 title claims abstract description 21
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 239000011490 mineral wool Substances 0.000 claims description 12
- 239000011253 protective coating Substances 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 239000011491 glass wool Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- -1 plastic molding Substances 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000010137 moulding (plastic) Methods 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 210000002268 wool Anatomy 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 206010001488 Aggression Diseases 0.000 description 1
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 230000016571 aggressive behavior Effects 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0047—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with open cavities, e.g. for covering sunken roads
- E01F8/0064—Perforated plate or mesh, e.g. as wall facing
- E01F8/007—Perforated plate or mesh, e.g. as wall facing with damping material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/8218—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only soundproof enclosures
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B2001/8263—Mounting of acoustical elements on supporting structure, e.g. framework or wall surface
- E04B2001/8281—Flat elements mounted parallel to a supporting surface with an acoustically active air gap between the elements and the mounting surface
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
- E04B2001/8433—Tray or frame type panels or blocks, with or without acoustical filling with holes in their face
- E04B2001/8438—Slot shaped holes
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
- E04B2001/8442—Tray type elements
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Building Environments (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
Description
CAISSON ANTI-BRUIT ABSORBANT
La présente invention concerne un caisson absorbant de protection contre le bruit.ABSORBENT NOISE BOX
The present invention relates to an absorbent sound protection box.
Deux techniques sont actuellement utilisées pour réaliser des écrans anti-bruit. Two techniques are currently used to make noise barriers.
L'une d'elles consiste à utiliser des matériaux absorbants et poreux ,tels que les mousses ou les laines minérales , qui sont appliquées sur des structures portantes métalliques ou en béton . Ces structures présentent de notables inconvénients, à savoir,que suite aux agressions extérieures de toutes natures,elles perdent leur aspect esthétique et surtout, leurs qualités d'absorption diminuent tassez rapidement
L'autre technique connue consiste à assembler un certain nombre de panneaux parallèles , les uns aux autres, les dits panneaux étant munis d'alveoles ,afin de réaliser des pièges à sons.Dans le brevet français
FR - A - 2 439 849 , on a décrit un tel dispositif constitué d'au moins trois panneaux distincts parallèles insérés suivant des glissières ménagées dans des piliers espacés.Les panneaux situés du coté de la source de bruit sont munis d'alvéoles biseautées,la proportion de vide par rapport à la surface totale diminuant en allant vers le panneau situé du coté riverains.Une couche de matériau absorbant peut avantageusement être inséré entre le premier et le deuxième panneau
Ce dispositif présentent des incovénients ,à savoir qu'il forme un véritable mur, et donc suppose pour sa réalisation et sa mise en oeuvre une manutention importante.De plus,il s'avère particulièrement lourd et coûteux
L'invention pallie ces inconvénients.Elle- propose un caisson absorbant anti-bruit, destiné à être appliqué contre une surface rigide portante, aussi bien interne qu'externe ,du type comprenant
- un panneau externe rigide présentant une multitude d'orifices traversants
- une couche fibreuse absorbante et isolante, disposée entre le panneau externe et la surface portante
L'invention se caractérise en ce que le panneau externe.One of them consists in using absorbent and porous materials, such as foams or mineral wools, which are applied to load-bearing metal or concrete structures. These structures have notable drawbacks, namely, that following external aggressions of all kinds, they lose their aesthetic appearance and above all, their absorption qualities decrease compact quickly
The other known technique consists in assembling a number of panels parallel to each other, said panels being provided with cells, in order to produce sound traps. In the French patent
FR - A - 2 439 849, such a device has been described consisting of at least three separate parallel panels inserted along slides arranged in spaced apart pillars. The panels situated on the side of the noise source are provided with bevelled cells, the proportion of void compared to the total surface decreasing by going towards the panel located on the riverside side. A layer of absorbent material can advantageously be inserted between the first and the second panel
This device has drawbacks, namely that it forms a real wall, and therefore requires for its realization and its implementation a significant handling. In addition, it turns out to be particularly heavy and expensive
The invention overcomes these drawbacks. It provides an absorbent anti-noise box, intended to be applied against a rigid carrying surface, both internal and external, of the type comprising
- a rigid external panel having a multitude of through holes
- an absorbent and insulating fibrous layer, placed between the external panel and the bearing surface
The invention is characterized in that the external panel.
présente en chacun de ses bords latéraux un talon venu du moulage,perpendiculaire au plan générale du dit panneau et dont la longueur correspond sensiblement à l'épaisseur de la couche fibreuse isolante et absorbante.has in each of its lateral edges a heel coming from the molding, perpendicular to the general plane of said panel and the length of which corresponds substantially to the thickness of the insulating and absorbent fibrous layer.
En d'autres termes,l'invention propose un caisson anti-bruit constitué d'entités élémentaires facilement transportables et applicables sur une surface portante prééxistante
Avantageusement , en pratique
- le panneau externe est réalisé par moulage à partir d'un mélange de fibre de verre et de ciment
- le panneau est réalisé par moulage de matière plastique
- le panneau est à base métallique
- la surface des orifices traversants représente douze à trente-cinq pour cent de la surface totale du panneau externe . On a constaté, que si la surface des orifices traversants représente moins de douze pour cent de la surface totale du panneau externe, l'absorption est très fortement réduite, voir nulle.Par contre, si la surface des orifices traversants est supérieure à trente-cinq pour cent de la surface totale du panneau on observe une diminution notable de la résistance mécanique du panneau, d'une part, et d'autre part l'ensemble ne se comporte plus alors comme un résonnateur et l'absorption n'est plus assurée que par les qualités de porosité de la laine minérale
- le droit des orifices traversants du panneau externe est arrondi et présente une surrépaisseur de renfort, formant le col du résonnateur ;
- la couche fibreuse isolante et absorbante est constituée par une laine minérale sélectionnée dans le groupe constitué par la laine de verre et la laine de roche
- la laine de roche a une densité comprise entre 120 et 175 kg/m3 ; on obtient les mêmes propriétés d'absorption avec de la laine de verre de densité moitié de celle de la laine de roche
- on interpose entre le panneau externe et la couche fibreuse isolante et absorbante un revêtement protecteur qui empêche le défibrage de la laine minérale et qui par ses propriétés antisouillures constitue un complément d'étanchéité
- le revêtement protecteur peut être constitué soit d'un film réalisé en polyéthylène, soit d'un voile de fibres de verre, teint dans la masse afin de mieux faire ressortir les motifs
- les orifices traversants présentent une forme variée , en fonction des desideratas de décoration des architectes
La façon dont l'invention peut être réalisée et les avantages qui en découlent ressortiront mieux de l'exem- ple de réalisation qui suit , donné à titre indicatif et non limitatif à l'appui des figures annexées
La figure 1 est une vue de face du dispositif selon l'invention
La figure 2 est une coupe d'un orifice traversant suivant la ligne 11-11 de la figure 1.In other words, the invention provides an anti-noise box made up of elementary entities that are easily transportable and applicable on a pre-existing bearing surface.
Advantageously, in practice
- the outer panel is made by molding from a mixture of fiberglass and cement
- the panel is made by plastic molding
- the panel is metal based
- the area of the through holes represents twelve to thirty-five percent of the total area of the external panel. It has been found that if the area of the through holes represents less than twelve percent of the total area of the external panel, the absorption is very greatly reduced, or even zero. On the other hand, if the area of the through holes is greater than thirty- five percent of the total surface of the panel there is a noticeable decrease in the mechanical strength of the panel, on the one hand, and on the other hand the assembly no longer behaves like a resonator and the absorption is no longer guaranteed only by the porosity qualities of mineral wool
- The right of the through holes of the external panel is rounded and has a reinforcement thickness, forming the neck of the resonator;
- the insulating and absorbent fibrous layer consists of a mineral wool selected from the group consisting of glass wool and rock wool
- rock wool has a density between 120 and 175 kg / m3; the same absorption properties are obtained with glass wool with a density half that of rock wool
- a protective coating is interposed between the external panel and the insulating and absorbent fibrous layer which prevents defibration of the mineral wool and which, by its anti-fouling properties, constitutes a sealing complement
- the protective coating can consist of either a film made of polyethylene, or a veil of glass fibers, dyed in the mass in order to bring out the patterns better
- the through holes have a varied shape, depending on the decoration desideratas of the architects
The way in which the invention can be implemented and the advantages which ensue therefrom will emerge more clearly from the embodiment which follows, given by way of nonlimiting indication in support of the appended figures.
Figure 1 is a front view of the device according to the invention
Figure 2 is a section through a through hole along line 11-11 of Figure 1.
La figure 3 est une coupe transversale suivant la ligne III-III de la figure l
La figure 4 est une coupe transversale suivant la ligne IV- IV de la figure 1 , illustrant le dispositif d'assemblage des panneaux entre eux , d'une part ,et des panneaux sur la surface portante , d'autre part
On observe au sein de la figure 1, un caisson antibruit selon l'invention ,constitué d'un panneau externe (1), sur lequel un certain nombre d'orifices traversants (2) sont ménagés . Ces orifices traversants (2) sont de forme générale allongée,et leur surface représente environ 22 % de la surface totale du panneau (1).Figure 3 is a cross section along line III-III of Figure l
Figure 4 is a cross section along the line IV-IV of Figure 1, illustrating the device for assembling the panels together, on the one hand, and the panels on the bearing surface, on the other hand
In FIG. 1, there is a noise reduction box according to the invention, consisting of an external panel (1), on which a certain number of through orifices (2) are provided. These through holes (2) are generally elongated, and their surface represents approximately 22% of the total surface of the panel (1).
Toutefois,il est à noter que la surface des vides se répartit en un certain nombre de surfaces élémentaires sinon, le rôle de piège à sons que doit jouer le dit panneau (1) ne pourrait plus l'être. La largeur des dits orifices traversants (2) doit être inférieure à quatre centimètres, sans quoi le dispositif ne peut plus jouer le rôle de résonnateur
Le panneau externe (1) est réalisé par un mélange de ciment et de fibre de verre, ce qui permet d'allier la légèreté , la résistance et un aspect de finition agréable.Il présente des dimensions de l'ordre de 120 x 120 centimètres , ce qui correspond à un bon rapport poids-encombrement/surface couverte De plus ,le panneau (1) peut avantageusement être teinté , suivant le désir de l'utilisateur.Le panneau (1) est réalisé par moulage.However, it should be noted that the surface of the voids is divided into a certain number of elementary surfaces otherwise, the role of sound trap which said panel (1) must play could no longer be. The width of said through holes (2) must be less than four centimeters, otherwise the device can no longer play the role of resonator
The external panel (1) is made of a mixture of cement and fiberglass, which allows to combine lightness, resistance and a pleasant finish appearance. It has dimensions of the order of 120 x 120 centimeters , which corresponds to a good weight / size / covered area ratio. In addition, the panel (1) can advantageously be tinted, as desired by the user. The panel (1) is produced by molding.
Comme on peut le voir dans la figure 3 ,on place entre le panneau externe (1) et la surface portante (3) une couche (4) de laine de roche d'environ cinq centimètres d'épaisseur. I1 est à noter, que si l'on désire accentuer l'absorption dans les graves, il convient d'augmenter la couche de laine de roche (4).Cette couche (4) a une densité de l'ordre de 175 kg/m3,afin d'assurer une absorption maximale du bruit.On interpose entre cette couche (4) et le panneau externe (1) un voile de 2 fibres de verre de 120 g/m2 (5), et même on peut éventu- ellement laisser une lame d'air (8) entre le panneau (1) et le voile (5),ceci permettant d'augmenter la résistance de la couche (4) aux agents agressifs externes
Comme on peut le voir dans la figure 2,le droit des orifices traversants (2) présente une surépaisseur (7) de renfort, destinée à former le col du résonnateur et donc d'améliorer les qualités d'absorption du dispositif anti-bruit
L'ensemble panneau (1) , film d'étanchéïté (5) et couche (4) est fixé à la surface portante par l'intermédiaire de talons (6),faisant partie intégrante du panneau (1). Ils jouent le rôle de raidisseur de l'ensemble .Au niveau des talons (6), on fixe l'ensemble (1,4,5) au moyen de vis (9), de chevilles (13) et de rondelles de serrage (10), avantageusement réalisées en néoprène de façon à obtenir une étanchéité maximum.La fixation des caissons est réalisée au niveau de défoncements (11) ménagés sur les angles du panneau (1), d'une part, et également au niveau du milieu de chaque segment périphérique du panneau (1).As can be seen in FIG. 3, a layer (4) of rock wool about five centimeters thick is placed between the external panel (1) and the bearing surface (3). It should be noted that if you want to increase the absorption in the bass, you should increase the layer of rock wool (4). This layer (4) has a density of around 175 kg / m3, in order to ensure maximum absorption of noise. Between this layer (4) and the external panel (1), a veil of 2 glass fibers of 120 g / m2 (5) is interposed, and it is even possible leave an air space (8) between the panel (1) and the veil (5), this making it possible to increase the resistance of the layer (4) to external aggressive agents
As can be seen in Figure 2, the right of the through holes (2) has an extra thickness (7) of reinforcement, intended to form the neck of the resonator and therefore to improve the absorption qualities of the anti-noise device
The assembly of panel (1), sealing film (5) and layer (4) is fixed to the bearing surface by means of heels (6), forming an integral part of the panel (1). They act as a stiffener for the assembly. At the heels (6), the assembly (1,4,5) is fixed by means of screws (9), dowels (13) and tightening washers ( 10), advantageously made of neoprene so as to obtain maximum tightness. The fixing of the boxes is carried out at the recesses (11) formed on the corners of the panel (1), on the one hand, and also at the middle of each peripheral segment of the panel (1).
I1 va de soi qu'en bordure d'ensembles constitués par une multitude de caissons juxtaposés ,les panneaux sont maintenus par des cornières ou tout autre dispositif analogue approrpié. I1 goes without saying that at the edge of assemblies constituted by a multitude of juxtaposed boxes, the panels are held by angles or any other similar device.
De la présente invention se dégagent des avantages, à savoir
- une très grande adaptabilité à toute surface portante
- un faible poids et un encombrement réduit, d'où une manutention grandement facilitée
- l'emploi de matériaux résistants permet une augmentation notable de la durée de vie des écrans
- le coût de tels écrans est sensiblement réduit.From the present invention emerge advantages, namely
- very high adaptability to any bearing surface
- low weight and small footprint, making handling much easier
- the use of resistant materials allows a significant increase in the life of the screens
- The cost of such screens is significantly reduced.
Outre l'application classique d'absorption des bruits de type routiers, le dispositif selon l'invention est particulièrement adapté pour la réalisation de l'insonorisation de locaux techniques . De plus, il est également très bien adapté pour l'insonorisation des piscines, dans lesquelles, du fait de la présence de chlore, l'utilisation des écrans anti-bruit connus jusqu'alors conduit à une rapide corrosion des différents matériaux In addition to the conventional application of noise absorption of the road type, the device according to the invention is particularly suitable for carrying out the soundproofing of technical premises. In addition, it is also very well suited for the soundproofing of swimming pools, in which, due to the presence of chlorine, the use of noise barriers previously known leads to rapid corrosion of the various materials.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8602117A FR2594156B3 (en) | 1986-02-13 | 1986-02-13 | ABSORBENT NOISE CONTROL UNIT. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8602117A FR2594156B3 (en) | 1986-02-13 | 1986-02-13 | ABSORBENT NOISE CONTROL UNIT. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2594156A1 true FR2594156A1 (en) | 1987-08-14 |
| FR2594156B3 FR2594156B3 (en) | 1988-04-08 |
Family
ID=9332193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8602117A Expired FR2594156B3 (en) | 1986-02-13 | 1986-02-13 | ABSORBENT NOISE CONTROL UNIT. |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2594156B3 (en) |
-
1986
- 1986-02-13 FR FR8602117A patent/FR2594156B3/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2594156B3 (en) | 1988-04-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |