EP0385087B1 - Sound absorbing and insulating barrier - Google Patents

Sound absorbing and insulating barrier Download PDF

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Publication number
EP0385087B1
EP0385087B1 EP90101185A EP90101185A EP0385087B1 EP 0385087 B1 EP0385087 B1 EP 0385087B1 EP 90101185 A EP90101185 A EP 90101185A EP 90101185 A EP90101185 A EP 90101185A EP 0385087 B1 EP0385087 B1 EP 0385087B1
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EP
European Patent Office
Prior art keywords
sound
absorbing elements
absorbent
insulating wall
sound absorbing
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EP90101185A
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German (de)
French (fr)
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EP0385087A3 (en
EP0385087A2 (en
Inventor
Pierre-André Bozzo
Claude Rebetez
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ACOUVER SA
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ACOUVER SA
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Priority to AT90101185T priority Critical patent/ATE96191T1/en
Publication of EP0385087A2 publication Critical patent/EP0385087A2/en
Publication of EP0385087A3 publication Critical patent/EP0385087A3/en
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    • 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

Definitions

  • the invention relates to a wall with high sound absorption and insulation, consisting of several self-supporting sound absorbing elements made of glued fibers provided with a rubbery elastic covering, which are stacked obliquely in retaining profiles and a solid panel forming the covering. back of the wall with high absorption and sound insulation.
  • Such walls are particularly intended to be established along busy traffic routes or railway tracks or any other location requiring noise protection. They are therefore used, for example, also for soundproofing particularly noisy buildings or workstations in factories and shooting ranges. To establish such walls, for example along motorways, they must resist the effects of wind, weather, ultraviolet rays and other aggressive influences, for example the frequent chemical fallout in industrial agglomerations or salt from road salting or from all kinds of projectiles. It is therefore essentially necessary that, apart from their primary function of absorption and sound insulation, these noise-reduction walls have sufficient stability and that they are resistant to physical, chemical and mechanical attack.
  • Swiss Patent No. 608,537 considered to be the closest state of the art, describes a wall with high absorption and sound insulation made up of sound absorbing elements stacked obliquely between retaining profiles in the form of double tee.
  • DE-A 2 751 854 describes another wall with high absorption and sound insulation made up of sound absorbing elements. These elements are self-supporting and mainly consist of granules or chips from old vulcanized tires. At least their noise exposed surface is coated with a rubbery layer. This document also cites plates made mainly of particles of textile reinforcements from old glued tires, reducing noise.
  • the perforated protective sheets being relatively rigid, are easily damaged or cause ricochets if a hard object hits them and prove to be quite dangerous in the event of collisions. The cost of replacing these damaged noise barriers is considerable.
  • the surface of a noise barrier according to DE-A 2 751 854 is provided with pores it is not suitable for use along traffic lanes; the effect improving the absorption of pores is quickly removed by dirt which clogs them.
  • the textile fibers of the used tire granules or chips constituting the base of the absorbent elements provided for in this document should quickly rot by the water penetrating through the pores of the rubber coating.
  • the essence of the invention therefore consists in the waterproof coating of the sound absorbing elements which in the direction of their length have a compressibility of approximately two percent allowing their fixing between the retaining profiles by wedging without mechanical reinforcements, such as envelopes in rigid material or the fitting of intermediate supports are necessary, even if the sound absorbing elements are arranged horizontally.
  • the sound absorbing elements constitute a surface with ribs and grooves, which considerably increases the absorbent surface, to the point that the absorbent surface becomes larger than the flat surface of the wall. It also follows that, depending on the angles of impact of the sounds which are not or only partially absorbed, these sounds are returned one or more times while creating interference, which disturbs the propagation of the sound waves.
  • the sound absorbing elements stacked at an angle and provided with a rubbery elastic waterproof coating are sufficiently resistant that any use of rigid protections on the side of the noise source is superfluous. It follows that by their direct exposure to the weather, a free natural washing of their surfaces exposed to dirt is provided, thus automatically evacuating the dust and chemical fallout, which could be deposited on the sound absorbing elements.
  • the use of sound absorbing elements without protective mesh is also requested for aesthetic reasons.
  • the invention can all the more satisfy these kinds of requirements, as in addition the elastic rubbery and waterproof coating can be tinted according to particular needs.
  • the elasticity of the rubbery, waterproof coating also absorbs the impact of any hard object that could strike the sound absorbing elements. It follows that eg stones thrown by cars against these walls, generally do not cause any damage and that the risks in the event of a collision are considerably reduced.
  • the sound absorbing and self-supporting elements mounted by wedging between two retaining profiles also makes the mounting of supporting parts to the retaining profiles superfluous. It is also advantageous if the same compressibility of these sound absorbing elements is also given in the direction of their width, so that the impact damping of hard objects corresponds to that of the rubbery elastic coating.
  • the rubbery waterproof coating advantageously has an elasticity of more than 300% without any tearing being observed, which guarantees the sound absorption efficiency of the sound absorbing element and the watertightness of the material. water.
  • the elastic rubber coating preferably has a thickness of at least 0.5 millimeter.
  • FIGS 1 and 2 show the essential parts of an embodiment according to the invention.
  • This wall consists of vertical retaining sections 1, U-shaped or double Tee, between the wings 2 and 3 from which the sound absorbing elements 4 are stacked obliquely.
  • the retaining sections 1 are anchored for example to the ground or to a base by means of appropriate fasteners 6.
  • the sound absorbing elements 4 which, when viewed in cross section, preferably have an approximately rectangular or parallelogram shape, are provided at least on the two faces exposed directly to the weather with a rubbery elastic coating 7 the water.
  • the sound absorbing elements 4 are stacked at an angle of about 60 degrees relative to the vertical plane of the wall. This angle can however vary between 30 and 80 degrees.
  • a square 8 preferably mounted in the factory, which can facilitate assembly on site by imposing the desired inclination when mounting the first sound absorbing element 4.
  • the distance a between two retaining sections 1 is slightly smaller, than the initial length b of the sound absorbing elements 4, which once assembled are wedged between the retaining profiles 1.
  • a wall When such a wall is mounted on a shooting range, it may be indicated to provide a covering 9, for example of wood, on the wings 2 of the retaining profile 1, in order to protect against possible ricochets of bullets.
  • Figure 4 shows an example of a special execution improving the absorption of high frequency sounds.
  • each sound absorbing element 4 of the following.
  • the spacing can be achieved without accessories, since the sound absorbing elements 4 can be positioned by wedging.
  • the local use of spacers 11 can be advised to facilitate rapid positioning and assembly.
  • This special solution provides an angle of inclination of the sound absorbing elements of about 45 degrees relative to the flat surface of the wall. It is also advantageous to place additional sound insulation 12 over the entire interior surface of the solid panel 5 forming the rear covering of the wall.
  • FIG. 5 shows another exemplary embodiment, which advantageously is suitable as sound insulation between two opposite sources of noise, for example between two noisy machines or between two shooters in a shooting range.
  • the solid panel 5 of one of the two walls can be omitted.
  • Figure 6 shows a choice of different shapes of sound absorbing elements 4, which for different reasons (aesthetics, additional increase in absorbent surface, etc.) could replace the elements either rectangular or in the shape of a parallelogram .
  • FIG. 7 shows sound absorbing elements 4 based on the shape of a parallelogram, one of the points 16 of which is removed and the face 17 provided with the coating 7 presses against the wing 2 while the face 18 presses against the wing 3 of the retaining sections 1, which prevents the tipping of the sound absorbing elements 4 even in the event of a severe storm.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Building Environments (AREA)

Abstract

The invention relates to a barrier wall as is used along motorways or railway lines. It is formed from several sound-absorbing elements (4) disposed obliquely inside retention sections (1) and provided with a solid panel (5) forming the rear covering of the barrier wall. For the purpose of improving above all the acoustic absorption and insulation effectiveness, the invention is characterised in that the sound-absorbing elements (4) made from fibres bonded together are self-supporting in that at least two faces of these elements are clad with a water-impermeable and elastic rubbery layer, and in that the absorbing surface is greater than the plane surface of the barrier wall. <IMAGE>

Description

L'invention concerne une paroi à haute absorption et isolation phonique, constituée de plusieurs éléments autoportants absorbants les sons en fibres encollées pourvus d'un revêtement élastique caoutchouteux, qui sont empilés obliquement dans des profilés de retenue et d'un panneau plein formant le revêtement arrière de la paroi à haute absorption et isolation phonique. De telles parois sont particulièrement destinées à être établies le long des voies de circulation à traffic intense ou des voies de chemins de fer ou tout autre emplacement nécessitant une protection phonique. Ainsi on les emploie par exemple aussi pour l'isolement phonique de bâtiments ou de postes de travail particulièrement bruyants dans les usines et aux stands de tir. Pour établir de telles parois par exemple le long d'autoroutes, elles doivent résister aux effets du vent, des intempéries, des rayons ultra-violets et à d'autres influences agressives, par exemples aux retombées chimiques fréquentes dans les agglomérations industrielles ou au sel provenant du salage des routes ou encore à toutes sortes de projectiles. Il est donc essentiellement nécessaire, qu'en dehors de leur fonction primaire d'absorption et d'isolation phonique, ces parois antibruit présentent une stabilité suffisante et qu'elles soient résistantes aux agressions physiques, chimiques et mécaniques.The invention relates to a wall with high sound absorption and insulation, consisting of several self-supporting sound absorbing elements made of glued fibers provided with a rubbery elastic covering, which are stacked obliquely in retaining profiles and a solid panel forming the covering. back of the wall with high absorption and sound insulation. Such walls are particularly intended to be established along busy traffic routes or railway tracks or any other location requiring noise protection. They are therefore used, for example, also for soundproofing particularly noisy buildings or workstations in factories and shooting ranges. To establish such walls, for example along motorways, they must resist the effects of wind, weather, ultraviolet rays and other aggressive influences, for example the frequent chemical fallout in industrial agglomerations or salt from road salting or from all kinds of projectiles. It is therefore essentially necessary that, apart from their primary function of absorption and sound insulation, these noise-reduction walls have sufficient stability and that they are resistant to physical, chemical and mechanical attack.

Le brevet suisse no 608 537 considéré comme l'état de la technique la plus proche, décrit une paroi à haute absorption et isolation phonique constituée d'éléments absorbant les sons empilés obliquement entre des profilés de retenue en forme de double Té.Swiss Patent No. 608,537 considered to be the closest state of the art, describes a wall with high absorption and sound insulation made up of sound absorbing elements stacked obliquely between retaining profiles in the form of double tee.

La DE-A 2 751 854 décrit une autre paroi à haute absorption et isolation phonique constituée d'éléments absorbant les sons. Ces éléments sont autoportants et principalement constitués de granulés ou copeaux de vieux pneus vulcanisés. Au moins leur surface exposée au bruit est revêtue d'une couche caoutchouteuse. Ce document cite également des plaques faites principalement de particules des renforts textiles de vieux pneus encollées, diminuant le bruit.DE-A 2 751 854 describes another wall with high absorption and sound insulation made up of sound absorbing elements. These elements are self-supporting and mainly consist of granules or chips from old vulcanized tires. At least their noise exposed surface is coated with a rubbery layer. This document also cites plates made mainly of particles of textile reinforcements from old glued tires, reducing noise.

Les parois antibruit citées présentent cependant divers inconvénients. Ainsi il est presqu'impossible ou du moins très onéreux, d'entretenir des parois selon CH-608 537 étant donné que des poussières ou des retombées de pluies ou de giclages provoqués par des voitures passant à proximité, s'accumulent entre la matière absorbant les sons et la tôle perforée de protection.The noise barriers mentioned, however, have various drawbacks. Thus it is almost impossible or at least very expensive to maintain walls according to CH-608 537 since dust or fallout from rain or sprays caused by cars passing by, accumulate between the absorbent material the sounds and the perforated protective sheet.

D'autre part, les tôles perforées de protection étant relativement rigides, sont facilement endommagées où provoquent des ricochets si un objet dur les frappe et s'avèrent assez dangéreuses en cas de collisions. Le coût de remplacement de ces parois antibruit endommagées est considérable.On the other hand, the perforated protective sheets being relatively rigid, are easily damaged or cause ricochets if a hard object hits them and prove to be quite dangerous in the event of collisions. The cost of replacing these damaged noise barriers is considerable.

En plus, ce genre de protection en tôle ou en toute autre matière rigide perforée limite considérablement la surface absorbante, vu que les perforations ne représentent en général qu'environ 50-75% de la surface de ces protections et que de ce fait au moins 25% des sons ricochent sur le restant de la surface.In addition, this kind of protection made of sheet metal or any other rigid perforated material considerably limits the absorbent surface, since the perforations generally only represent around 50-75% of the surface of these protections and therefore at least 25% of the sounds ricochet over the rest of the area.

Vu que la surface d'une paroi antibruit selon DE-A 2 751 854 est pourvue de pores elle ne convient pas à l'emploi le long de voies de circulation; l'effet améliorant l'absorption des pores est rapidement supprimé par des salissures qui les bouchent. En plus, les fibres textiles des granulés ou copeaux de pneus usés constituant la base des éléments absorbant prévus par ce document devraient rapidement pourrir par l'eau pénétrant à travers les pores du revêtement caoutchouteux.Since the surface of a noise barrier according to DE-A 2 751 854 is provided with pores it is not suitable for use along traffic lanes; the effect improving the absorption of pores is quickly removed by dirt which clogs them. In addition, the textile fibers of the used tire granules or chips constituting the base of the absorbent elements provided for in this document should quickly rot by the water penetrating through the pores of the rubber coating.

La tâche de l'invention consiste à améliorer une telle paroi antibruit essentiellement par rapport à l'absorption et l'isolation phonique ainsi qu'à réduire à un minimum les autres inconvénients cités. Cette tâche est résolue par les caractéristiques citées initialement combinées avec les caractéristiques complémentaires suivantes:

  • a) les éléments absorbant les sons présentent dans le sens de leur longueur une compressibilité à main d'environ deux pour-cent et dans le sens de leur largeur, locale-ment d'environ dix pour-cent et qui sont fixés entre les profilés de retenue par coinçage;
  • b) le revêtement élastique caoutchouteux des éléments absorbant les sons est imperméable à l'eau;
  • c) la surface absorbante est plus grande que la surface plane de la paroi.
The task of the invention is to improve such a noise barrier essentially with respect to sound absorption and insulation as well as to reduce to the minimum the other drawbacks mentioned. This task is solved by the characteristics cited initially combined with the following additional characteristics:
  • a) the sound absorbing elements have, in the direction of their length, a compressibility by hand of approximately two percent and in the direction of their width, locally of approximately ten percent and which are fixed between the profiles retention by wedging;
  • b) the rubbery elastic coating of the sound absorbing elements is waterproof;
  • c) the absorbent surface is larger than the flat surface of the wall.

L'essentiel de l'invention consiste donc dans le revêtement imperméable à l'eau des éléments absorbant les sons qui dans le sens de leur longueur présentent une compréssibilité d'environ deux pourcent permettant leur fixation entre les profilés de retenue par coinçage sans que des renforts mécaniques, comme p.ex. des enveloppes dans une matière rigide ou le montage de supports intermédiaires soient nécessaires, même si les éléments absorbant les sons sont disposés horizontalement. Par l'empilage à un angle de 30 à 80 degrés, les éléments absorbant les sons constituent une surface à nervures et rainures, ce qui augmente considérablement la surface absorbante, au point que la surface absorbante devient plus grande que la surface plane de la paroi. Il en résulte d'autre part, que selon les angles d'impact des sons qui ne sont pas ou seulement partiellement absorbés, ces sons sont renvoyés une ou plusieurs fois tout en créant des interférences, qui perturbent la propagation des ondes sonores.The essence of the invention therefore consists in the waterproof coating of the sound absorbing elements which in the direction of their length have a compressibility of approximately two percent allowing their fixing between the retaining profiles by wedging without mechanical reinforcements, such as envelopes in rigid material or the fitting of intermediate supports are necessary, even if the sound absorbing elements are arranged horizontally. By stacking at an angle of 30 to 80 degrees, the sound absorbing elements constitute a surface with ribs and grooves, which considerably increases the absorbent surface, to the point that the absorbent surface becomes larger than the flat surface of the wall. It also follows that, depending on the angles of impact of the sounds which are not or only partially absorbed, these sounds are returned one or more times while creating interference, which disturbs the propagation of the sound waves.

Les éléments absorbant les sons empilés en biais et munis d'un revêtement élastique caoutchouteux imperméable à l'eau, ces éléments autoportants sont suffisamment résistants que tout emploi de protections rigides du côté de la source de bruit est superflu. Il s'ensuit que par leur exposition directe aux intempéries, un libre lavage naturel de leurs surfaces exposées au salissement est procuré, évacuant ainsi automatiquement les poussières et retombées chimiques, qui pourraient être déposées sur les éléments absorbant les sons.Since the sound absorbing elements stacked at an angle and provided with a rubbery elastic waterproof coating, these self-supporting elements are sufficiently resistant that any use of rigid protections on the side of the noise source is superfluous. It follows that by their direct exposure to the weather, a free natural washing of their surfaces exposed to dirt is provided, thus automatically evacuating the dust and chemical fallout, which could be deposited on the sound absorbing elements.

L'emploi d'éléments absorbant les sons sans grillages de protection est aussi demandé pour des raisons esthétiques. L'invention peut d'autant mieux satisfaire ce genre d'exigences, comme en plus le revêtement élastique caoutchouteux et imperméable à l'eau peut être teinté selon les besoins particuliers. L'élasticité du revêtement caoutchouteux et imperméable à l'eau permet aussi d'amortir l'impact de n'importe quel objet dur qui pourrait frapper les éléments absorbant les sons. Il s'ensuit que p.ex. des caillous projetés par les voitures contre ces parois, ne causent généralement aucun dégats et que les risques en cas de collision sont considérablement diminués.The use of sound absorbing elements without protective mesh is also requested for aesthetic reasons. The invention can all the more satisfy these kinds of requirements, as in addition the elastic rubbery and waterproof coating can be tinted according to particular needs. The elasticity of the rubbery, waterproof coating also absorbs the impact of any hard object that could strike the sound absorbing elements. It follows that eg stones thrown by cars against these walls, generally do not cause any damage and that the risks in the event of a collision are considerably reduced.

Il est particulièrement avantageux, d'employer des plaques en fibres minérales comprimés et encollés à la résine synthétique ou à la mélamine comme éléments absorbant les sons, qui présentent par cette constitution et en plus de leur excellente qualification d'absorption de sons, une résistance optimale.It is particularly advantageous to use plates of mineral fibers compressed and glued with synthetic resin or melamine as sound absorbing elements, which by this constitution and in addition to their excellent sound absorption qualification, resistance optimal.

Les éléments absorbant les sons et autoportants montés par coinçage entre deux profilés de retenue, rend aussi superflu le montage de pièces d'appui aux profilés de retenue. Il est d'autre part avantageux si la même compressibilité de ces éléments absorbant les sons est aussi donnée dans le sens de leur largeur, afin que l'amortissement d'impacts d'objets durs corresponde à celui du revêtement élastique caoutchouteux.The sound absorbing and self-supporting elements mounted by wedging between two retaining profiles, also makes the mounting of supporting parts to the retaining profiles superfluous. It is also advantageous if the same compressibility of these sound absorbing elements is also given in the direction of their width, so that the impact damping of hard objects corresponds to that of the rubbery elastic coating.

Le revêtement caoutchouteux imperméable à l'eau présente avantageusement une élasticité de plus de 300% sans qu'aucune déchirure puisse être constatée, ce qui garantit l'efficacité d'absorption phonique de l'élément absorbant les sons et l'étanchéité à l'eau. Pour atteindre ces qualités et pour résister aussi à des surcharges momentanées en cas de choc, le revêtement élastique caoutchouteux présente préférentiellement une épaisseur d'au moins 0,5 millimètre. Pour l'empilage des éléments absorbant les sons, il est prévu d'employer des profilés de retenue en forme de U ou de double Té, qui eux-mêmes sont ancrés individuellement ou étant préalablement assemblés en un cadre, au sol ou sur un socle ou sur toute autre base de fixation, par des moyens appropriés (boulons, goujons, etc.) Sur ces mêmes profilés de retenue se fixe aussi le panneau plein, formant le revêtement arrière de la paroi. Sans que cela soit nécessaire il peut être utile de prévoir entre les ailes du profilé de retenue un appui, par exemple sous forme d'une équerre, fixant l'inclinaison du premier élément absorbant les sons empilé.The rubbery waterproof coating advantageously has an elasticity of more than 300% without any tearing being observed, which guarantees the sound absorption efficiency of the sound absorbing element and the watertightness of the material. water. To achieve these qualities and also to withstand momentary overloads in the event of an impact, the elastic rubber coating preferably has a thickness of at least 0.5 millimeter. For the stacking of sound absorbing elements, provision is made for the use of U-shaped or double T-shaped retaining profiles, which themselves are anchored individually or being previously assembled in a frame, on the ground or on a base or on any other fixing base, by appropriate means (bolts, studs, etc.) On these same retaining profiles the solid panel is also fixed, forming the rear covering of the wall. Without this being necessary, it may be useful to provide a support between the wings of the retaining profile, for example in the form of a square, fixing the inclination of the first stacked sound absorbing element.

D'autres caractéristiques de l'invention font partie de revendications complémentaires et seront précisées avec d'autres avantages de l'invention dans la description des exemples de réalisation.Other characteristics of the invention form part of additional claims and will be specified with other advantages of the invention in the description of the exemplary embodiments.

Les dessins représentent quelques exemples d'exécution de l'invention. Ils montrent:

Fig. 1
une paroi à haute absorption et isolation phonique verticale, en coupe verticale;
Fig. 2
la zone inférieure de l'exemple d'exécution selon Fig. 1, en coupe verticale agrandie;
Fig. 3
le profilé de retenue de l'exemple d'exécution selon Fig. 1, en coupe horizontale;
Fig. 4
la coupe verticale du détail selon Fig. 2 d'une exécution modifiée;
Fig. 5
la coupe verticale du détail selon Fig. 2 d'une autre exécution modifiée;
Fig. 6
des éléments absorbant les sons 4, vue en coupe, avec des formes alternatives;
Fig. 7
des éléments absorbant les sons 4, vue en coupe, basés sur la forme d'un parallélogramme.
The drawings represent some examples of execution of the invention. They show:
Fig. 1
a wall with high absorption and vertical sound insulation, in vertical section;
Fig. 2
the lower zone of the execution example according to FIG. 1, in enlarged vertical section;
Fig. 3
the retaining profile of the exemplary embodiment according to FIG. 1, in horizontal section;
Fig. 4
the vertical section of the detail according to Fig. 2 of a modified execution;
Fig. 5
the vertical section of the detail according to Fig. 2 of another modified execution;
Fig. 6
sound absorbing elements 4, sectional view, with alternative shapes;
Fig. 7
sound absorbing elements 4, sectional view, based on the shape of a parallelogram.

Les figures 1 et 2 représentent les parties essentielles d'une exécution suivant l'invention. Cette paroi est constituée de profilés de retenue 1 verticaux, en forme de U ou de double Té, entre les ailes 2 et 3 desquels, les éléments absorbant les sons 4 sont empilés obliquement. Sur les ailes 3, opposées à la source de bruit, des profilés de retenue 1, vient fixé le panneau plein 5, formant le revêtement arrière de la paroi, qui est avantageusement prévu en une matière lourde se mettant difficilement en vibrations. Les profilés de retenue 1 sont ancrés par exemple au sol ou sur un socle moyennant des fixations 6 appropriées.Figures 1 and 2 show the essential parts of an embodiment according to the invention. This wall consists of vertical retaining sections 1, U-shaped or double Tee, between the wings 2 and 3 from which the sound absorbing elements 4 are stacked obliquely. On the wings 3, opposite the noise source, retaining profiles 1, the solid panel 5 is fixed, forming the rear covering of the wall, which is advantageously provided in a heavy material which is difficult to vibrate. The retaining sections 1 are anchored for example to the ground or to a base by means of appropriate fasteners 6.

Une exécution avec les éléments absorbant les sons 4 disposés verticalement entre les profilés de retenue 1 placés horizontalement, n'est pas dessinée, mais se compose des mêmes parties essentielles.An execution with the sound absorbing elements 4 arranged vertically between the retaining profiles 1 placed horizontally, is not drawn, but consists of the same essential parts.

Les éléments absorbant les sons 4, qui présentent, vue en coupe transversale, de préférence une forme approximativement soit rectangulaire ou d'un parallélogramme, sont munis au moins sur les deux faces exposées directement aux intempéries d'un revêtement 7 élastique caoutchouteux et imperméable à l'eau. Dans l'exemple d'exécution montré dans la Fig. 2, les éléments absorbant les sons 4 sont empilés à un angles d'environ 60 degrés par rapport au plan verticale de la paroi. Cette angle peut cependant varier entre 30 et 80 degrés. Dans la même figure on montre une équerre 8, montée de préférence en usine, qui peut faciliter l'assemblage au chantier en imposant l'inclinaison désirée lors du montage du premier élément absorbant les sons 4.The sound absorbing elements 4, which, when viewed in cross section, preferably have an approximately rectangular or parallelogram shape, are provided at least on the two faces exposed directly to the weather with a rubbery elastic coating 7 the water. In the execution example shown in FIG. 2, the sound absorbing elements 4 are stacked at an angle of about 60 degrees relative to the vertical plane of the wall. This angle can however vary between 30 and 80 degrees. In the same figure there is shown a square 8, preferably mounted in the factory, which can facilitate assembly on site by imposing the desired inclination when mounting the first sound absorbing element 4.

Si une paroi antibruit ne comporte qu'une surface absorbante, l'emploi de profilés de retenue 1 en forme de U est recommandé. Par contre, si une telle paroi comporte plusieurs surfaces absorbantes, on peut donner préférence à l'emploi de profilés en retenue 1 en forme de double Té à l'endroit ou deux surfaces absorbantes se joignent. La figure 3 montre un exemple de cette exécution.If a noise barrier only has an absorbent surface, the use of U-shaped retaining profiles 1 is recommended. On the other hand, if such a wall has several absorbent surfaces, preference may be given to the use of retaining sections 1 in the form of a double Tee where two absorbent surfaces join. Figure 3 shows an example of this execution.

En tenant compte de la compressibilité en longueur des éléments absorbant les sons 4, la distance a entre deux profilés de retenue 1 est légèrement plus petite, que la longueur initiale b des éléments absorbant les sons 4, qui une fois montés tiennent par coinçage entre les profilés de retenue 1. Lorsqu'une telle paroi est montée à un stand de tir, il peut être indiqué, de prévoir un revêtement 9, par exemple en bois sur les ailes 2 du profilé de retenue 1, afin de protéger contre d'éventuels ricochets de balles.Taking into account the compressibility in length of the sound absorbing elements 4, the distance a between two retaining sections 1 is slightly smaller, than the initial length b of the sound absorbing elements 4, which once assembled are wedged between the retaining profiles 1. When such a wall is mounted on a shooting range, it may be indicated to provide a covering 9, for example of wood, on the wings 2 of the retaining profile 1, in order to protect against possible ricochets of bullets.

Si de telles parois sont exposées à de violentes turbulences de vent, comme cela peut être le cas par exemple aux emplacements de stationnement d'avions, ou si on désire espacer extrêmements deux profilés de retenue 1, il peut être utile de placer parallèlement une ou plusieurs tiges 10, traversant verticalement les éléments absorbant les sons 4, entre les profilés de retenue 1.If such walls are exposed to strong wind turbulence, as may be the case for example in aircraft parking spaces, or if it is desired to space two extremely retaining sections 1, it may be useful to place one or more several rods 10, passing vertically through the sound absorbing elements 4, between the retaining profiles 1.

La figure 4 montre un exemple d'une exécution spéciale améliorant l'absorption des sons à hautes fréquences. A cet effet il est avantageux d'espacer parallèlement chaque élément absorbant les sons 4 du suivant. L'espacement peut se réaliser sans accessoires, puisque les éléments absorbant les sons 4 peuvent être positionnnés par coinçage. Toutefois l'emploi local d'entretoises 11 peut être conseillé pour faciliter un positionnement et assemblage rapide. Cette solution spéciale prévoit un angle d'inclinaison des éléments absorbant les sons d'environ 45 degrés par rapport à la surface plane de la paroi. Il est d'autre part avantageux de placer complémentairement une isolation phonique 12 sur toute la surface intérieure du panneau plein 5 formant le revêtement arrière de la paroi.Figure 4 shows an example of a special execution improving the absorption of high frequency sounds. For this purpose it is advantageous to space in parallel each sound absorbing element 4 of the following. The spacing can be achieved without accessories, since the sound absorbing elements 4 can be positioned by wedging. However, the local use of spacers 11 can be advised to facilitate rapid positioning and assembly. This special solution provides an angle of inclination of the sound absorbing elements of about 45 degrees relative to the flat surface of the wall. It is also advantageous to place additional sound insulation 12 over the entire interior surface of the solid panel 5 forming the rear covering of the wall.

La figure 5 montre un autre exemple d'exécution, qui convient avantageusement comme isolation phonique entre deux sources opposées de bruit, par exemple entre deux machines bruyantes ou entre deux tireurs dans un stand de tir.FIG. 5 shows another exemplary embodiment, which advantageously is suitable as sound insulation between two opposite sources of noise, for example between two noisy machines or between two shooters in a shooting range.

L'exécution prévoit d'assembler dos-à-dos 2 parois comme montrées dans la figure 2. Dans ce cas, le panneau plein 5 d'une des deux parois peut être supprimé.The execution plans to assemble back-to-back 2 walls as shown in Figure 2. In this case, the solid panel 5 of one of the two walls can be omitted.

La figure 6 montre un choix de différentes formes d'éléments absorbant les sons 4, qui pour des raisons différentes (esthétiques, augmentation complémentaire de la surface absorbante, etc.) pourraient remplacer les éléments soit de forme rectangulaire ou de forme d'un parallélogramme.Figure 6 shows a choice of different shapes of sound absorbing elements 4, which for different reasons (aesthetics, additional increase in absorbent surface, etc.) could replace the elements either rectangular or in the shape of a parallelogram .

La figure 7 montre des éléments absorbant les sons 4 basés sur la forme d'un parallélogramme, dont l'une des pointes 16 est supprimée et dont la face 17 pourvue du revêtement 7 appuie contre l'aile 2 tandis que la face 18 appuie contre l'aile 3 des profilés de retenue 1, ce qui évite le basculement des éléments absorbant les sons 4 même en cas de tempête violente.FIG. 7 shows sound absorbing elements 4 based on the shape of a parallelogram, one of the points 16 of which is removed and the face 17 provided with the coating 7 presses against the wing 2 while the face 18 presses against the wing 3 of the retaining sections 1, which prevents the tipping of the sound absorbing elements 4 even in the event of a severe storm.

Claims (14)

  1. A sound absorbent and sound insulating wall consisting of bonded fibre self-supporting, sound absorbing elements (4) which have a resilient coating and are layered diagonally between U-shaped or double T-shaped retaining profiles (1) and a solid board (5) forming the rear side of the wall, characterized in that
    a) the sound absorbing elements (4) can be compressed by hand in length by about two percent and in width by about ten percent and that they are retained by clamping between the retaining profiles (1);
    b) the resilient coating (7) is water impermeable;
    c) the sound absorbing surface is larger than the planar surface of the wall.
  2. A sound absorbent and sound insulating wall according to Claim 1 characterized in that the sound absorbing elements (4) are in layers with a parallel distance between each element.
  3. A sound absorbent and sound insulating wall according to Claim 1 characterized in that several sound absorbing elements (4) are made up as an integral unit and form a profiled plate.
  4. A sound absorbent and sound insulating wall according to Claims 1 to 3 characterized in that the sound absorbing elements (4) consist of mineral fibres with are bonded with resin or melamine.
  5. A sound absorbent and sound insulating wall according to Claims 1 to 4 characterized in that the water impermeable resilient coating (7) has a high polymer, water dispersing base and displays an at least three hundred percent resilience and a thickness of at least half a millimetre.
  6. A sound absorbent and sound insulating wall according to Claims 1 to 5 characterized in that the sound absorbing elements (4) are disposed at an incline of thirty to eighty degrees to the vertical plane of the wall.
  7. A sound absorbent and sound insulating wall according to Claims 1 to 6 characterized in that the sound absorbing elements (4) have a substantially rectangular cross section.
  8. A sound absorbent and sound insulating wall according to Claims 1 to 6 characterized in that the sound absorbing elements (4) have a parallelogram cross section, one or two corners (16) of which are omitted and which abut with the surface (17) provided with the coating (7) against the flange (2) and the surface (18) abuts against the flange (3) of the retaining profile (1).
  9. A sound absorbent and sound insulating wall according to Claims 7 and 8 characterized in that one of the longitudinal surfaces of the sound absorbing elements (4) has cross sectional grooves (13) or is convex (14) or concave (15) or has a different profile.
  10. A sound absorbent and sound insulating wall according to Claims 1 to 9 characterized in that the retaining profiles (1) are fixed as an assembled frame or as individual parts by means of fixing devices (6) to the floor, to a pedestal or to any other fixing base.
  11. A sound absorbent and sound insulating wall according to Claims 1 to 10 characterized in that the flanges (2) of the retaining profiles (1) are provided with protective cladding against ricochets.
  12. A sound absorbent and sound insulating wall according to Claims 1 to 11 characterized in that an additional sound insulation (12) covering the entire surface of the solid board (5) is disposed between the solid board (5) and the sound absorbing elements (4).
  13. A sound absorbent and sound insulating wall according to Claims 1 to 12 characterized in that two sound absorbent and sound insulating walls are assembled back to back, the solid board (5) of one wall being dispensed with.
  14. A sound absorbent and sound insulating wall according to Claims 1 to 13 characterized in that one or several rods (10) passing through the sound absorbing elements (4) are disposed in parallel between two retaining profiles (1).
EP90101185A 1989-03-03 1990-01-22 Sound absorbing and insulating barrier Expired - Lifetime EP0385087B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90101185T ATE96191T1 (en) 1989-03-03 1990-01-22 ACOUSTIC AND INSULATION WALL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH792/89 1989-03-03
CH792/89A CH679601A5 (en) 1989-03-03 1989-03-03

Publications (3)

Publication Number Publication Date
EP0385087A2 EP0385087A2 (en) 1990-09-05
EP0385087A3 EP0385087A3 (en) 1991-06-12
EP0385087B1 true EP0385087B1 (en) 1993-10-20

Family

ID=4195296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90101185A Expired - Lifetime EP0385087B1 (en) 1989-03-03 1990-01-22 Sound absorbing and insulating barrier

Country Status (4)

Country Link
EP (1) EP0385087B1 (en)
AT (1) ATE96191T1 (en)
CH (1) CH679601A5 (en)
DE (1) DE69003971T2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3167197A (en) * 1996-06-28 1998-01-21 Rockdelta A/S A sound absorbing and/or reducing wall or baffle
DE29805730U1 (en) * 1998-03-28 1998-06-04 Grötz, Georg, 76597 Loffenau Sound barrier for traffic routes
EP1770216A1 (en) 2005-09-29 2007-04-04 Rockwool International A/S A noise absorbing element and a noise screen with such elements
CN107178045A (en) * 2017-07-14 2017-09-19 山西尚风科技股份有限公司 High ferro non-metallic baffle is seated device and connected structure

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH608537A5 (en) * 1975-08-30 1979-01-15 Vki Rheinhold & Mahla Ag Noise-protection wall
DE2625168B1 (en) * 1976-06-04 1977-10-27 Irbit Holding Ag SOUND INSULATION LINING MADE OF FOAM
DE2751854A1 (en) * 1977-11-21 1979-05-23 Reifen Weiss Kg Multilayered sound insulation panel - has soft porous rubber layer covering large particle size vulcanised rubber core
DE2800529A1 (en) * 1978-01-07 1979-07-12 Karl Fischer Roadside or railway noise screen wall unit - has solid and perforated concrete slabs, and sound absorbent layer
GB2157337B (en) * 1984-04-05 1987-05-13 Ici Plc Sound absorption panels
US4751979A (en) * 1985-05-16 1988-06-21 Airborne Express, Inc. Engine noise suppression kit for the nacelles of a jet aircraft
NL8702613A (en) * 1987-11-02 1989-06-01 Arij Roelof De Bruin En Hubert SOUND ABSORBING ELEMENT.
DE8811787U1 (en) * 1988-09-16 1988-12-22 HANSA Ventilatoren und Maschinenbau NEUMANN GmbH & Co KG, 2915 Saterland silencer

Also Published As

Publication number Publication date
DE69003971T2 (en) 1994-05-05
DE69003971D1 (en) 1993-11-25
EP0385087A3 (en) 1991-06-12
ATE96191T1 (en) 1993-11-15
EP0385087A2 (en) 1990-09-05
CH679601A5 (en) 1992-03-13

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