EP2516747A1 - Sound barrier component - Google Patents

Sound barrier component

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Publication number
EP2516747A1
EP2516747A1 EP10807309A EP10807309A EP2516747A1 EP 2516747 A1 EP2516747 A1 EP 2516747A1 EP 10807309 A EP10807309 A EP 10807309A EP 10807309 A EP10807309 A EP 10807309A EP 2516747 A1 EP2516747 A1 EP 2516747A1
Authority
EP
European Patent Office
Prior art keywords
soundproofing
component
soundproofing component
concrete body
designed
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
Application number
EP10807309A
Other languages
German (de)
French (fr)
Other versions
EP2516747B1 (en
Inventor
Gerhard Rinnhofer
Liviu-Valeriu Roman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kirchdorfer Fertigteilholding GmbH
Original Assignee
Kirchdorfer Fertigteilholding GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kirchdorfer Fertigteilholding GmbH filed Critical Kirchdorfer Fertigteilholding GmbH
Priority to SI201031460A priority Critical patent/SI2516747T1/en
Publication of EP2516747A1 publication Critical patent/EP2516747A1/en
Application granted granted Critical
Publication of EP2516747B1 publication Critical patent/EP2516747B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E01F8/0029—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with porous surfaces, e.g. concrete with porous fillers
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
    • E01B19/003—Means for reducing the development or propagation of noise
    • 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
    • E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
    • E01F15/02—Continuous barriers extending along roads or between traffic lanes
    • E01F15/08—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks
    • E01F15/081—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks characterised by the use of a specific material
    • E01F15/083—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks characterised by the use of a specific material using concrete

Definitions

  • the invention relates to a soundproofing component according to the preamble of claim 1.
  • soundproofing components such as noise protection panels, known, which are formed from concrete.
  • Such conventional soundproofing components have a support body or a base body, which is usually formed of normal concrete, and which forms a load-bearing structure. On this body is then arranged at least one, the expected noise source dressed, layer for absorbing airborne sound.
  • a layer is formed, for example, by plant growth or by a layer of a porous material, such as so-called porous lightweight concrete.
  • the object of the invention is therefore to provide a soundproofing component of the type mentioned, with which the mentioned disadvantages can be avoided, which is simple and low production costs produced, which meets high static requirements, and which has a, over conventional soundproofing components increased soundproofing.
  • Such a soundproofing component is formed, which is formed only from the concrete body. As a result, such a soundproofing component has a simpler construction compared to conventional soundproofing components, and can be produced inexpensively and inexpensively with little manufacturing effort.
  • the soundproofing component fulfills the acoustic requirements regarding the absorption capacity of airborne sound by the first surface formed directly by the concrete body. Due to the relatively high density of the additives, an inventive soundproofing component has the necessary static properties to perform this without additional support body made of normal concrete. Due to the high density of the additives, such a soundproofing component furthermore has a high mass, and thus also a high sound insulation capacity.
  • FIG. 1 shows a soundproofing component designed as a soundproofing wall
  • FIG. 2 shows a first embodiment of a soundproofing component designed as a vehicle restraint system
  • FIG. 3 shows a second embodiment of a soundproofing component designed as a vehicle restraint system
  • Fig. 4 is designed as a soundproof floor plate soundproofing component.
  • a soundproofing component 1 wherein the soundproofing component 1 is formed as a one-piece concrete body 2, wherein the concrete body 2 includes aggregates with a density between 2000 kg m and 3000 kg / m, and wherein at least a first surface 3 of the concrete body 2 is designed as an acoustic absorber for damping airborne sound.
  • Such a soundproofing component 1 is formed, which is formed only from the concrete body 2. As a result, such a soundproofing component 1 has a simpler construction compared to conventional soundproofing components 1, and can be produced inexpensively and inexpensively with a low production cost.
  • the soundproofing component 1 fulfills the acoustic requirements with respect to the absorption capacity of airborne sound by the first surface 3 formed directly by the concrete body 2. Due to the relatively high density of the additives, an inventive soundproofing component 1 has the necessary static properties to perform this without additional support body of normal concrete.
  • Such a soundproofing component 1, due to the high density of the additives further has a high mass, and thus also a high sound insulation capacity.
  • a soundproofing component 1 is preferably a component which provides or permits protection against sound. Protection against sound in this context means a reduction of the sound pressure by the soundproofing component 1, which is arranged between a sound source and a sound sink. This preferably includes any type or cause of the reduction of this sound pressure level by the soundproofing component 1, for example due to sound attenuation, sound insulation, transmission losses within the soundproofing component 1 and / or reflection losses when the sound waves strike the first surface 3.
  • a component in the sense of a soundproofing component 1 according to the invention preferably designates a structural component or building, which is designed as a one-piece concrete body 2.
  • the concrete body 2 contains or comprises aggregates with a density between 2000 kg / m 3 and 3000 kg / m 3 .
  • the additives are preferably mineral and / or organic grains or particles. It is particularly preferred that the aggregates have a bulk density between 2700 kg / m and 2900 kg / m.
  • the bulk density refers to the density of the aggregate, therefore without the free spaces between the individual grains.
  • the aggregates have a bulk density greater than 1200 kg / m 3 , the bulk density denoting the density, including the spaces between the individual grains or particles, therefore the total mass based on the total volume.
  • At least a first surface 3 of the concrete body 2 is formed as an acoustic absorber for damping airborne sound, therefore, that the first surface 3 is formed for damping airborne sound impinging on this first surface 3.
  • at least the first surface 3 has pores of predetermined size.
  • a pore is preferably a depression or an opening in or adjacent to the first surface 3. Regions are created through the pores in which energy is removed from the sound waves. Starting from the frequency range in which the first surface 3 is supposed to be effective, the dimensions, hence the dimensions or the size of the pores, result, which can determine both the depth and a surface or shape of the individual pores.
  • the pores are effective as an acoustic damper, provided that these pores have dimensions in the order of the wavelength of the airborne sound waves to be damped.
  • the additives have particles with predefinable particle sizes.
  • grain fractions of 1/4 mm, 2/4 mm, 4/8 mm or 8/12 mm are provided, the indication 2/4 mm indicating that the aggregates granules with dimensions or grain sizes, also referred to as grain size of 2 mm to 4 mm.
  • small amounts, in particular less than 20% by weight of the added additives, of aggregates with a grain size of 0 to 1 mm may be provided, which in this sense are fine grain aggregates can be designated.
  • the particles of the additives have a discontinuous grading curve.
  • a discontinuous grading curve refers to the fact that certain specifiable grain sizes are not present in the aggregates.
  • a specification of the type, number and size of the pores can also be achieved.
  • the pores are formed in the two aforementioned preferred embodiments of the concrete body 2, as already stated, by free spaces between individual particles of the aggregates.
  • the concrete body 2 at least partially has cavities, wherein it is provided in particular that at least two adjoining cavities are in communication with each other.
  • These cavities designate cavities in the interior of the concrete body, and are preferably formed by adjoining particles of the aggregates. Through these cavities, the internal damping, and thus the sound absorption can be increased, since there is in each cavity - at least in certain frequency ranges - to a radiation of airborne sound, which in turn impinges on another particle, both processes are lossy.
  • the open arrangement of the particles has a strongly damping or absorbing effect on the transmission of structure-borne sound within the concrete body 2.
  • a plurality of the cavities are in communication with each other and thus formed cavities open into pores of the first surface 3.
  • the cavities pass through the concrete body 2 in the manner of a sponge.
  • the concrete body 2 is free of passage openings, which would worsen the sound insulation properties or the sound absorption properties.
  • it may be provided to form the concrete body 2 as haufwerksporiger concrete.
  • an inventive soundproofing component 1 without additional supporting body of normal concrete or the like gets along or can get along, as otherwise at Soundproofing components according to the prior art is provided.
  • An inventive soundproofing component 1 therefore preferably has a substantially homogeneous construction, whereby the additional load-bearing components can be dispensed with, since soundproofing components 1 according to the invention are capable of absorbing the static loads occurring in use.
  • a reinforcement is arranged in the concrete body 2, which may be any type of reinforcement suitable for concrete.
  • a substantially corrosion-resistant reinforcement is provided, since due to the cavities moisture can penetrate well into the interior of the concrete body 2.
  • the reinforcement comprises galvanized steel.
  • the reinforcement is designed as at least two-dimensional framework or structure.
  • Soundproofing components 1 according to the invention have a high sound absorption, wherein, for example, a sound absorption of more than 8 dB (A) can already be achieved with a component thickness of 18 cm.
  • Fig. 1 shows a soundproofing component 1, which is designed as a soundproof wall 4.
  • This soundproof wall 4 may have a reinforcement, wherein the soundproof wall 4 is self-supporting in itself, and therefore requires no further support means or holding arrangements.
  • the soundproof wall 4 further has a base, and is free-standing.
  • Soundproofing components 1 according to the invention can also be designed as panels for a soundproof wall 4. Such panels are held approximately in rails or uprights.
  • FIG. 2 and 3 show a first and a second embodiment of a designed as a vehicle restraint system 6 for limiting a roadway soundproofing component 1.
  • a vehicle restraint system 6 for limiting a roadway soundproofing component 1.
  • Fig. 2 therefore shows a vehicle restraint system 6, which is formed as a one-piece concrete body 2
  • Fig. 3 shows a vehicle restraint system 6, which has a support body 7, which is formed approximately from normal concrete.
  • FIG. 4 also shows a soundproofing component 1 according to the invention, which is designed as a soundproofing floor panel 5.
  • a soundproofing component 1 according to the invention, which is designed as a soundproofing floor panel 5.
  • Such soundproof floor panels 5 are preferably provided in so-called. Fixed carriageways in the area of track systems for rail vehicles, as shown in Fig. 4. As a result, the sound emitted by a track system can be significantly reduced.
  • the noise in a train can be reduced, which travels such a equipped route, as the sound generated by the train is reflected in only a very small amount of the track system and now no longer or greatly reduced impinges on the underside of the train , Especially in tunnels, the use of such soundproofing floor panels 5 is preferred because, in addition to the significant reduction in noise, this also makes it possible to drive on the track system by emergency vehicles.
  • soundproofing floor panels 5 according to the invention it is possible - as already stated - to dispense with a special profiling, as is known, for example, in the form of panels with wave- or pyramid-shaped surfaces in the area of sound absorption.
  • soundproofing floor panels 5 can also form the floor of an escape route, since these do not pose a risk of tripping for fleeing people due to their essentially flat surface.
  • soundproof floor panels 5 have a high sound absorption, with a component thickness of 18 cm already a sound absorption of more than 8 dB (A) can be achieved.

Landscapes

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

Abstract

The invention relates to a sound barrier component (1), wherein to enable simple production, to fulfill high static requirements, and to increase the sound barrier effect, the sound barrier component (1) is designed as a one-piece concrete body (2), the concrete body (2) contains aggregates having a bulk density between 2000 kg/m3 and 3000 kg/m3, and at least one first surface (3) of the concrete body (2) is designed as an acoustic absorber in order to attenuate airborne sound.

Description

Schallschutzbauteil  Sound insulation component
Die Erfindung betrifft einen Schallschutzbauteil gemäß dem Oberbegriff des Patentanspruches 1. The invention relates to a soundproofing component according to the preamble of claim 1.
Es sind Schallschutzbauteile, wie etwa Lärmschutzpaneele, bekannte, welche umfassend Beton gebildet werden. Derartige herkömmliche Schallschutzbauteile weisen einen Stützkörper bzw. einen Grundkörper auf, welcher in der Regel aus Normalbeton gebildet ist, und welcher eine tragfähige Struktur bildet. Auf diesem Grundkörper ist dann wenigstens eine, der zu erwartenden Lärmquelle zugerichtete, Schicht zur Absorption von Luftschall angeordnet. Eine derartige Schicht ist etwa durch Pflanzenbewuchs oder durch eine Schicht eines porösen Werkstoffes, wie etwa sog. haufwerksporigem Leichtbeton, gebildet.  There are soundproofing components, such as noise protection panels, known, which are formed from concrete. Such conventional soundproofing components have a support body or a base body, which is usually formed of normal concrete, and which forms a load-bearing structure. On this body is then arranged at least one, the expected noise source dressed, layer for absorbing airborne sound. Such a layer is formed, for example, by plant growth or by a layer of a porous material, such as so-called porous lightweight concrete.
Nachteilig an derartigen bekannten Schallschutzbauteilen ist, dass diese einen tragenden Grundkörper benötigen, um die statischen Anforderungen im Betrieb zu erfüllen, sowie zusätzlich einen absorbierenden Aufbau, da der Grundkörper derartiger herkömmlicher Schallschutzbauteile nicht geeignet ist, die gestellten akustischen Anforderungen zu erfüllen. Aufgabe der Erfindung ist es daher einen Schallschutzbauteil der eingangs genannten Art anzugeben, mit welchem die genannten Nachteile vermieden werden können, welcher einfach und mit geringem Fertigungsaufwand herstellbar ist, welcher hohe statische Anforderungen erfüllt, und welcher eine, gegenüber herkömmlichen Schallschutzbauteilen gesteigerte Schallschutzwirkung aufweist. A disadvantage of such known soundproofing components that they require a supporting body to meet the static requirements during operation, as well as an absorbent structure, since the body of such conventional soundproofing components is not suitable to meet the stated acoustic requirements. The object of the invention is therefore to provide a soundproofing component of the type mentioned, with which the mentioned disadvantages can be avoided, which is simple and low production costs produced, which meets high static requirements, and which has a, over conventional soundproofing components increased soundproofing.
Erfindungsgemäß wird dies durch die Merkmale des Patentanspruches 1 erreicht.  This is achieved by the features of claim 1 according to the invention.
Derart ist ein Schallschutzbauteil gebildet, welcher lediglich aus dem Betonkörper gebildet ist. Ein derartiger Schallschutzbauteil weist dadurch einen - gegenüber herkömmlichen Schallschutzbauteilen - einfacheren Aufbau auf, und ist einfach und mit geringem Fertigungsaufwand kostengünstig herstellbar. Der Schallschutzbauteil erfüllt durch die unmittelbar durch den Betonkörper gebildete erste Oberfläche die akustischen Anforderungen hinsichtlich der Absorptionsfähigkeit von Luftschall. Durch die relativ hohe Dichte der Zuschlagsstoffe weist ein erfindungsgemäßer Schallschutzbauteil die notwendigen statischen Eigenschaften auf, um diesen ohne zusätzlichen Tragkörper aus Normalbeton auszuführen. Ein derartiger Schallschutzbauteil weist aufgrund der hohen Dichte der Zuschlagsstoffe weiters eine hohe Masse auf, und damit auch ein hohes Schalldämmungsvermögen. Such a soundproofing component is formed, which is formed only from the concrete body. As a result, such a soundproofing component has a simpler construction compared to conventional soundproofing components, and can be produced inexpensively and inexpensively with little manufacturing effort. The soundproofing component fulfills the acoustic requirements regarding the absorption capacity of airborne sound by the first surface formed directly by the concrete body. Due to the relatively high density of the additives, an inventive soundproofing component has the necessary static properties to perform this without additional support body made of normal concrete. Due to the high density of the additives, such a soundproofing component furthermore has a high mass, and thus also a high sound insulation capacity.
Die Unteransprüche, welche ebenso wie der Patentanspruch 1 gleichzeitig einen Teil der Beschreibung bilden, betreffen weitere vorteilhafte Ausgestaltungen der Erfindung. Die Erfindung wird unter Bezugnahme auf die beigeschlossenen Zeichnungen, in welchen lediglich bevorzugte Ausfuhrungsformen beispielhaft dargestellt sind, näher beschrieben. Dabei zeigt: The subclaims, which as well as the patent claim 1 simultaneously form part of the description, relate to further advantageous embodiments of the invention. The invention will be described in more detail with reference to the accompanying drawings, in which only preferred embodiments are shown by way of example. Showing:
Fig. 1 einen als Schallschutzwand ausgebildeten Schallschutzbauteil;  FIG. 1 shows a soundproofing component designed as a soundproofing wall; FIG.
Fig. 2 eine erste Ausführungsform eines als Fahrzeugrückhaltesystem ausgebildeten Schallschutzbauteils;  FIG. 2 shows a first embodiment of a soundproofing component designed as a vehicle restraint system; FIG.
Fig. 3 eine zweite Ausführungsform eines als Fahrzeugrückhaltesystem ausgebildeten Schallschutzbauteils; und  FIG. 3 shows a second embodiment of a soundproofing component designed as a vehicle restraint system; FIG. and
Fig. 4 einen als Schallschutzbodenplatte ausgebildeten Schallschutzbauteil.  Fig. 4 is designed as a soundproof floor plate soundproofing component.
Die Fig. 1 bis 4 zeigen unterschiedliche bevorzugte Ausfuhrungsformen eines Schallschutzbauteils 1, wobei der Schallschutzbauteil 1 als einstückiger Betonkörper 2 ausgebildet ist, wobei der Betonkörper 2 Zuschlagstoffe mit einer Rohdichte zwischen 2000 kg m und 3000 kg/m beinhaltet, und wobei wenigstens eine erste Oberfläche 3 des Betonkörpers 2 als akustischer Absorber zur Dämpfung von Luftschall ausgebildet ist. 1 to 4 show different preferred embodiments of a soundproofing component 1, wherein the soundproofing component 1 is formed as a one-piece concrete body 2, wherein the concrete body 2 includes aggregates with a density between 2000 kg m and 3000 kg / m, and wherein at least a first surface 3 of the concrete body 2 is designed as an acoustic absorber for damping airborne sound.
Derart ist ein Schallschutzbauteil 1 gebildet, welcher lediglich aus dem Betonkörper 2 gebildet ist. Ein derartiger Schallschutzbauteil 1 weist dadurch einen - gegenüber herkömmlichen Schallschutzbauteilen 1 - einfacheren Aufbau auf, und ist einfach und mit geringem Fertigungsaufwand kostengünstig herstellbar. Der Schallschutzbauteil 1 erfüllt durch die unmittelbar durch den Betonkörper 2 gebildete erste Oberfläche 3 die akustischen Anforderungen hinsichtlich der Absorptionsfähigkeit von Luftschall. Durch die relativ hohe Dichte der Zuschlagsstoffe weist ein erfindungsgemäßer Schallschutzbauteil 1 die notwendigen statischen Eigenschaften auf, um diesen ohne zusätzlichen Tragkörper aus Normalbeton auszuführen. Ein derartiger Schallschutzbauteil 1 weist aufgrund der hohen Dichte der Zuschlagsstoffe weiters eine hohe Masse auf, und damit auch ein hohes Schalldämmungsvermögen. Such a soundproofing component 1 is formed, which is formed only from the concrete body 2. As a result, such a soundproofing component 1 has a simpler construction compared to conventional soundproofing components 1, and can be produced inexpensively and inexpensively with a low production cost. The soundproofing component 1 fulfills the acoustic requirements with respect to the absorption capacity of airborne sound by the first surface 3 formed directly by the concrete body 2. Due to the relatively high density of the additives, an inventive soundproofing component 1 has the necessary static properties to perform this without additional support body of normal concrete. Such a soundproofing component 1, due to the high density of the additives further has a high mass, and thus also a high sound insulation capacity.
Ein Schallschutzbauteil 1 ist bevorzugt ein Bauteil, welcher einen Schutz vor Schall bietet bzw. ermöglicht. Schutz vor Schall bezeichnet in diesem Zusammenhang eine Verminderung des Schalldrucks durch den Schallschutzbauteil 1, welcher zwischen einer Schallquelle und einer Schallsenke angeordnet ist. Dies umfasst bevorzugt jede Art bzw. Ursache der Verminderung dieses Schalldruckpegels durch den Schallschutzbauteil 1, etwa aufgrund von Schalldämpfung, Schalldämmung, Transmissionsverlusten innerhalb des Schallschutzbauteils 1 und/oder Reflexionsverlusten beim Auftreffen der Schallwellen an der ersten Oberfläche 3. Ein Bauteil im Sinne eines erfindungsgemäßen Schallschutzbauteils 1 bezeichnet dabei bevorzugt ein bautechnisches Bauteil oder Bauwerk, welches als einstückiger Betonkörper 2 ausgebildet ist. A soundproofing component 1 is preferably a component which provides or permits protection against sound. Protection against sound in this context means a reduction of the sound pressure by the soundproofing component 1, which is arranged between a sound source and a sound sink. This preferably includes any type or cause of the reduction of this sound pressure level by the soundproofing component 1, for example due to sound attenuation, sound insulation, transmission losses within the soundproofing component 1 and / or reflection losses when the sound waves strike the first surface 3. A component in the sense of a soundproofing component 1 according to the invention preferably designates a structural component or building, which is designed as a one-piece concrete body 2.
Erfindungsgemäß ist vorgesehen, dass der Betonkörper 2 Zuschlagstoffe mit einer Rohdichte zwischen 2000 kg/m3 und 3000 kg/m3 beinhaltet bzw. umfasst. Bei den Zuschlagsstoffen handelt es sich bevorzugt um mineralische und/oder organische Körner bzw. Partikel. Besonders bevorzugt ist vorgesehen, dass die Zuschlagsstoffe eine Rohdichte zwischen 2700 kg/m und 2900 kg/m aufweisen. Die Rohdichte bezeichnet dabei die Dichte der Gesteinskörnung, daher ohne die freien Zwischenräume zwischen den einzelnen Körnern. Weiters ist bevorzugt vorgesehen, dass die Zuschlagstoffe eine Schüttdichte größer 1200 kg/m3 aufweisen, wobei die Schüttdichte die Dichte unter Einbeziehung der Zwischenräume zwischen den einzelnen Körnern bzw. Partikeln bezeichnet, daher die Gesamtmasse bezogen auf das Gesamtvolumen. According to the invention, it is provided that the concrete body 2 contains or comprises aggregates with a density between 2000 kg / m 3 and 3000 kg / m 3 . The additives are preferably mineral and / or organic grains or particles. It is particularly preferred that the aggregates have a bulk density between 2700 kg / m and 2900 kg / m. The bulk density refers to the density of the aggregate, therefore without the free spaces between the individual grains. Furthermore, it is preferably provided that the aggregates have a bulk density greater than 1200 kg / m 3 , the bulk density denoting the density, including the spaces between the individual grains or particles, therefore the total mass based on the total volume.
Erfindungsgemäß ist weiters vorgesehen, dass wenigstens eine erste Oberfläche 3 des Betonkörpers 2 als akustischer Absorber zur Dämpfung von Luftschall ausgebildet ist, daher dass die erste Oberfläche 3 zur Dämpfung von auf diese erste Oberfläche 3 eintreffenden Luftschall ausgebildet ist. Hiezu ist bevorzugt vorgesehen, dass wenigstens die erste Oberfläche 3 Poren vorgegebener Größe aufweist. Eine Pore ist dabei bevorzugt eine Vertiefung bzw. eine Öffnung in der bzw. angrenzend an die erste Oberfläche 3. Durch die Poren werden Bereiche geschaffen, in welchen den Schallwellen Energie entzogen wird. Ausgehend von dem Frequenzbereich, in welchem die erste Oberfläche 3 wirksam sein soll, ergeben sich die Dimensionen, daher die Abmessungen bzw. die Größe der Poren, wobei diese sowohl die Tiefe als auch eine Fläche bzw. Form der einzelnen Poren bestimmen kann. Die Poren sind als akustischer Dämpfer wirksam, sofern diese Poren Abmessungen in der Größenordnung der Wellenlänge der zu dämpfenden Luftschallwellen aufweisen.  According to the invention it is further provided that at least a first surface 3 of the concrete body 2 is formed as an acoustic absorber for damping airborne sound, therefore, that the first surface 3 is formed for damping airborne sound impinging on this first surface 3. For this purpose, it is preferably provided that at least the first surface 3 has pores of predetermined size. A pore is preferably a depression or an opening in or adjacent to the first surface 3. Regions are created through the pores in which energy is removed from the sound waves. Starting from the frequency range in which the first surface 3 is supposed to be effective, the dimensions, hence the dimensions or the size of the pores, result, which can determine both the depth and a surface or shape of the individual pores. The pores are effective as an acoustic damper, provided that these pores have dimensions in the order of the wavelength of the airborne sound waves to be damped.
Gemäß den bevorzugten Ausfuhrungsformen ist - insbesondere zur einfachen Ausbildung der Poren - vorgesehen, dass die Zuschlagsstoffe Partikel mit vorgebbaren Korngrößen aufweisen. Bevorzugt sind dabei Kornfraktionen von l/4mm, 2/4 mm, 4/8 mm oder 8/12 mm vorgesehen, wobei die Angabe 2/4 mm angibt, dass die Zuschlagsstoffe Körner mit Abmessungen bzw. Korngrößen, auch als Körnung bezeichnet, von 2 mm bis 4 mm aufweisen. Zusätzlich können dabei in geringem Maß, insbesondere zu weniger als 20Gewichtspozent der zugegebenen Zuschlagstoffe, jeweils Zuschlagsstoffe mit einer Körnung von 0 bis 1 mm vorgesehen sein, welche in diesem Sinn als Feinkorn-Zuschlagstoffe bezeichnet werden können. Durch die Wahl der Korngrößen kann bereits beim Herstellungsprozess einfach die Größe der Poren, und damit der wirksame Frequenzbereich vorgegeben werden. According to the preferred embodiments, it is provided, in particular for the simple formation of the pores, that the additives have particles with predefinable particle sizes. Preferably, grain fractions of 1/4 mm, 2/4 mm, 4/8 mm or 8/12 mm are provided, the indication 2/4 mm indicating that the aggregates granules with dimensions or grain sizes, also referred to as grain size of 2 mm to 4 mm. In addition, in each case small amounts, in particular less than 20% by weight of the added additives, of aggregates with a grain size of 0 to 1 mm may be provided, which in this sense are fine grain aggregates can be designated. By selecting the grain sizes, the size of the pores, and therefore the effective frequency range, can be predetermined during the production process.
Zur Bildung der Poren kann weiters vorgesehen sein, dass die Partikel der Zuschlagsstoffe eine unstetige Sieblinie aufweisen. Eine unstetige Sieblinie bezeichnet dabei den Umstand, dass bestimmte vorgebbare Körnungen bei den Zuschlagstoffen nicht vorhanden sind. Dadurch kann ebenfalls eine Vorgabe der Art, Anzahl und Größe der Poren erzielt werden. Die Poren werden dabei bei den beiden vorgenannten bevorzugten Ausbildungen des Betonkörpers 2, wie bereits dargelegt, durch freie Zwischenräume zwischen einzelnen Partikeln der Zuschlagsstoffe gebildet.  For the formation of the pores can further be provided that the particles of the additives have a discontinuous grading curve. A discontinuous grading curve refers to the fact that certain specifiable grain sizes are not present in the aggregates. As a result, a specification of the type, number and size of the pores can also be achieved. The pores are formed in the two aforementioned preferred embodiments of the concrete body 2, as already stated, by free spaces between individual particles of the aggregates.
In Weiterbildung der Erfindung ist bevorzugt vorgesehen, dass der Betonkörper 2 wenigstens bereichsweise Hohlräume aufweist, wobei insbesondere vorgesehen ist, dass wenigstens zwei aneinander angrenzende Hohlräume miteinander in Verbindung stehen. Diese Hohlräume bezeichnen Hohlräume im Inneren des Betonkörpers, und sind bevorzugt durch aneinander angrenzende Partikel der Zuschlagstoffe gebildet sind. Durch diese Hohlräume kann die innere Dämpfung, und damit die Schallabsorption, erhöht werden, da es in jedem Hohlraum - wenigstens in bestimmten Frequenzbereichen - zu einer Abstrahlung von Luftschall kommt, welcher wiederum an einem anderen Partikel auftrifft, wobei beide Vorgänge verlustbehaftet sind. Zudem wirkt sich die offene Anordnung der Partikel als stark dämpfend bzw. absorbierend für die Körperschallübertragung innerhalb des Betonkörpers 2 aus. In diesem Zusammenhang ist bevorzugt vorgesehen, dass eine Mehrzahl der Hohlräume miteinander in Verbindung stehen und derart gebildete Hohlräume in Poren der ersten Oberfläche 3 münden. Diese weiteren Volumina, welche an die Poren angeschlossen sind, wirken dabei jeweils als Hohlraumresonator bzw. Helmholzresonator, und verbessern deutlich die Schalldämpfungseigenschaften eines erfindungsgemäßen Schallschutzbauteils 1. Dabei kann insbesondere vorgesehen sein, dass die Hohlräume den Betonkörper 2 in der Art eines Schwammes durchziehen. Bevorzugt ist jedoch vorgesehen, dass der Betonkörper 2 frei von Durchgangsöffhungen ist, welche die Schalldämmungseigenschaften bzw. die Schallabsorptionseigenschaften verschlechtern würden. In diesem Zusammenhang kann vorgesehen sein, den Betonkörper 2 als haufwerksporiger Beton auszubilden.  In a further development of the invention it is preferably provided that the concrete body 2 at least partially has cavities, wherein it is provided in particular that at least two adjoining cavities are in communication with each other. These cavities designate cavities in the interior of the concrete body, and are preferably formed by adjoining particles of the aggregates. Through these cavities, the internal damping, and thus the sound absorption can be increased, since there is in each cavity - at least in certain frequency ranges - to a radiation of airborne sound, which in turn impinges on another particle, both processes are lossy. In addition, the open arrangement of the particles has a strongly damping or absorbing effect on the transmission of structure-borne sound within the concrete body 2. In this context, it is preferably provided that a plurality of the cavities are in communication with each other and thus formed cavities open into pores of the first surface 3. These additional volumes, which are connected to the pores, each act as a cavity resonator or Helmholzresonator, and significantly improve the sound damping properties of a soundproofing component according to the invention 1. It can be provided in particular that the cavities pass through the concrete body 2 in the manner of a sponge. Preferably, however, it is provided that the concrete body 2 is free of passage openings, which would worsen the sound insulation properties or the sound absorption properties. In this context, it may be provided to form the concrete body 2 as haufwerksporiger concrete.
Gemäß einer bevorzugten Ausfuhrungsform der gegenständlichen Erfindung ist vorgesehen, dass ein erfindungsgemäßer Schallschutzbauteil 1 ohne zusätzlichen tragenden Körper aus Normalbeton bzw. Ahnlichem auskommt bzw. auskommen kann, wie dies ansonsten bei Schallschutzbauteilen gemäß dem Stand der Technik vorgesehen ist. Ein erfindungsgemäßer Schallschutzbauteil 1 weist daher bevorzugt einen im Wesentlichen homogen Aufbau auf, wodurch auf die zusätzlichen tragenden Bauteile verzichtet werden kann, da erfindungsgemäße Schallschutzbauteile 1 in der Lage sind, die im Einsatz auftretenden statischen Belastungen aufzunehmen. According to a preferred embodiment of the subject invention, it is provided that an inventive soundproofing component 1 without additional supporting body of normal concrete or the like gets along or can get along, as otherwise at Soundproofing components according to the prior art is provided. An inventive soundproofing component 1 therefore preferably has a substantially homogeneous construction, whereby the additional load-bearing components can be dispensed with, since soundproofing components 1 according to the invention are capable of absorbing the static loads occurring in use.
Zur Verbesserung der statischen Eigenschaften eines erfindungsgemäßen Schallschutzbauteils 1 ist bevorzugt vorgesehen, dass in dem Betonkörper 2 eine Bewehrung angeordnet ist, wobei es sich um jede Art einer für Beton geeigneten Bewehrung handeln kann. Bevorzugt ist eine im Wesentlichen korrosionsbeständige Bewehrung vorgesehen, da aufgrund der Hohlräume Feuchtigkeit gut in das Innere des Betonkörpers 2 eindringen kann. Insbesondere ist vorgesehen, dass die Bewehrung verzinkten Stahl umfasst. Zur guten Verbindung der Bewehrung mit dem von Hohlräume bereichsweise durchbrochenen Betonkörper 2 ist in Weiterbildung der Erfindung vorgesehen, dass die Bewehrung als wenigstens zweidimensionales Gerüst bzw. Gebilde ausgebildet ist.  To improve the static properties of a soundproofing component 1 according to the invention, it is preferably provided that a reinforcement is arranged in the concrete body 2, which may be any type of reinforcement suitable for concrete. Preferably, a substantially corrosion-resistant reinforcement is provided, since due to the cavities moisture can penetrate well into the interior of the concrete body 2. In particular, it is provided that the reinforcement comprises galvanized steel. For good connection of the reinforcement with the cavities partially perforated concrete body 2 is provided in a further development of the invention that the reinforcement is designed as at least two-dimensional framework or structure.
Die Fig. 1 bis 4 zeigen vier bevorzugte Ausbildungen erfindungsgemäßer Schallschutzbauteile 1. Erfindungsgemäße Schallschutzbauteile 1 weisen eine hohe Schallabsorption auf, wobei beispielsweise bei einer Bauteildicke von 18 cm bereits eine Schallabsorption von mehr als 8 dB(A) erreicht werden kann. Fig. 1 zeigt einen Schallschutzbauteil 1, welcher als Schallschutzwand 4 ausgebildet ist. Diese Schallschutzwand 4 kann eine Bewehrung aufweisen, wobei die Schallschutzwand 4 an sich selbsttragend ist, und daher keine weiteren Stützmittel bzw. Halteanordnungen benötigt. Die Schallschutzwand 4 weist weiters einen Sockel auf, und ist freistehend. Erfindungsgemäße Schallschutzbauteile 1 können auch als Paneele für eine Schallschutzwand 4 ausgebildet sein. Derartige Paneele werden etwa in Profilschienen bzw. Stehern gehalten.  1 to 4 show four preferred embodiments of soundproofing components 1 according to the invention. Soundproofing components 1 according to the invention have a high sound absorption, wherein, for example, a sound absorption of more than 8 dB (A) can already be achieved with a component thickness of 18 cm. Fig. 1 shows a soundproofing component 1, which is designed as a soundproof wall 4. This soundproof wall 4 may have a reinforcement, wherein the soundproof wall 4 is self-supporting in itself, and therefore requires no further support means or holding arrangements. The soundproof wall 4 further has a base, and is free-standing. Soundproofing components 1 according to the invention can also be designed as panels for a soundproof wall 4. Such panels are held approximately in rails or uprights.
Die Fig. 2 und 3 zeigen eine erste und eine zweite Ausfuhrungsform eines als Fahrzeugrückhaltesystem 6 zur Begrenzung einer Fahrbahn ausgebildeten Schallschutzbauteils 1. Durch ein derartiges Fahrzeugrückhaltesystem 6 können insbesondere die Rollgeräusche in Fahrbahnnähe gedämpft werden. Fig. 2 zeigt daher ein Fahrzeugrückhaltesystem 6, welches als einstückiger Betonkörper 2 ausgebildet ist, wohingegen Fig. 3 ein Fahrzeugrückhaltesystem 6 zeigt, welches einen Tragkörper 7 aufweist, welcher etwa aus Normalbeton gebildet ist. Durch diese Kombination des Betonkörpers 2 mit einem Tragkörper 7 kann - für besonders belastende Einsätze, etwa als Sperre für sicherheitsrelevante Bereiche - eine weitere Steigerung der Belastbarkeit eines derartigen Fahrzeugrückhaltesystems 6 erreicht werden. 2 and 3 show a first and a second embodiment of a designed as a vehicle restraint system 6 for limiting a roadway soundproofing component 1. Such a vehicle restraint system 6, in particular, the rolling noise can be damped near the road. Fig. 2 therefore shows a vehicle restraint system 6, which is formed as a one-piece concrete body 2, whereas Fig. 3 shows a vehicle restraint system 6, which has a support body 7, which is formed approximately from normal concrete. By this combination of the concrete body 2 with a support body 7 can - for particularly stressful applications, such as Lock for safety-related areas - a further increase in the load capacity of such a vehicle restraint system 6 can be achieved.
Fig. 4 zeigt weiters einen erfindungsgemäßen Schallschutzbauteil 1, welcher als Schallschutzbodenplatte 5 ausgebildet ist. Derartige Schallschutzbodenplatten 5 sind etwa bevorzugt bei sog. festen Fahrbahnen im Bereich von Gleisanlagen für Schienenfahrzeuge vorgesehen, wie dies auch in Fig. 4 dargestellt ist. Dadurch kann der von einer Gleisanlage abgestrahlte Schall deutlich reduziert werden. Dadurch kann auch der Lärm in einem Zug reduziert werden, welcher eine derartig ausgestattete Strecke befährt, da der durch den Zug erzeugte Schall in nur mehr sehr geringem Maß von der Gleisanlage reflektiert wird und nunmehr nicht mehr bzw. stark vermindert auf die Unterseite des Zuges auftrifft. Besonders in Tunneln ist der Einsatz derartiger Schallschutzbodenplatten 5 bevorzugt, da diese neben der deutlichen Lärmreduktion weiters ein Befahren der Gleisanlage durch Einsatzfahrzeuge ermöglicht. Bei erfindungsgemäßen Schallschutzbodenplatten 5 kann - wie bereits dargelegt - auf eine spezielle Profilierung, wie diese etwa in Form von Platten mit wellen- oder pyramidenförmigen Oberflächen im Bereich der Schallabsorption bekannt sind, verzichtet werden. Dadurch können erfindungsgemäße Schallschutzbodenplatten 5 auch den Boden eines Fluchtweges bilden, da diese aufgrund deren im Wesentlichen ebenen Oberfläche keine Stolpergefahr für fliehende Menschen darstellt. Trotz der ebenen Oberfläche weisen derartige Schallschutzbodenplatten 5 eine hohe Schallabsorption auf, wobei bei einer Bauteildicke von 18 cm bereits eine Schallabsorption von mehr als 8 dB(A) erreicht werden kann.  FIG. 4 also shows a soundproofing component 1 according to the invention, which is designed as a soundproofing floor panel 5. Such soundproof floor panels 5 are preferably provided in so-called. Fixed carriageways in the area of track systems for rail vehicles, as shown in Fig. 4. As a result, the sound emitted by a track system can be significantly reduced. As a result, the noise in a train can be reduced, which travels such a equipped route, as the sound generated by the train is reflected in only a very small amount of the track system and now no longer or greatly reduced impinges on the underside of the train , Especially in tunnels, the use of such soundproofing floor panels 5 is preferred because, in addition to the significant reduction in noise, this also makes it possible to drive on the track system by emergency vehicles. In the case of soundproofing floor panels 5 according to the invention, it is possible - as already stated - to dispense with a special profiling, as is known, for example, in the form of panels with wave- or pyramid-shaped surfaces in the area of sound absorption. As a result, soundproofing floor panels 5 according to the invention can also form the floor of an escape route, since these do not pose a risk of tripping for fleeing people due to their essentially flat surface. Despite the flat surface, such soundproof floor panels 5 have a high sound absorption, with a component thickness of 18 cm already a sound absorption of more than 8 dB (A) can be achieved.
Weitere erfindungsgemäße Ausführungsformen weisen lediglich einen Teil der beschriebenen Merkmale auf, wobei jede Merkmalskombination, insbesondere auch von verschiedenen beschriebenen Ausführungsformen, vorgesehen sein kann. Further embodiments according to the invention have only a part of the features described, wherein each feature combination, in particular also of various described embodiments, can be provided.

Claims

P A T E N T A N S P R Ü C H E PATENT APPLICATIONS
1. Schallschutzbauteil (1) dadurch gekennzeichnet, dass der Schallschutzbauteil (1) als einstückiger Betonkörper (2) ausgebildet ist, dass der Betonkörper (2) Zuschlagstoffe mit einer Rohdichte zwischen 2000 kg/m und 3000 kg/m beinhaltet, und dass wenigstens eine erste Oberfläche (3) des Betonkörpers (2) als akustischer Absorber zur Dämpfung von Luftschall ausgebildet ist. 1. Acoustic protection component (1) characterized in that the soundproofing component (1) is designed as a one-piece concrete body (2), that the concrete body (2) aggregates with a density between 2000 kg / m and 3000 kg / m includes, and that at least one first surface (3) of the concrete body (2) is designed as an acoustic absorber for damping airborne sound.
2. Schallschutzbauteil (1) nach Anspruch 1, dadurch gekennzeichnet, dass wenigstens die erste Oberfläche (3) Poren vorgegebener Größe aufweist. 2. Soundproofing component (1) according to claim 1, characterized in that at least the first surface (3) has pores of predetermined size.
3. Schallschutzbauteil (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Zuschlagsstoffe Partikel mit vorgebbaren Korngrößen aufweisen. 3. Soundproofing component (1) according to claim 1 or 2, characterized in that the additives have particles with predeterminable particle sizes.
4. Schallschutzbauteil (1) nach Anspruch 3, dadurch gekennzeichnet, dass die Partikel der Zuschlagsstoffe eine unstetige Sieblinie aufweisen. 4. Soundproofing component (1) according to claim 3, characterized in that the particles of the additives have a discontinuous grading curve.
5. Schallschutzbauteil (1) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Betonkörper (2) wenigstens bereichsweise, insbesondere zusammenhängende, Hohlräume aufweist, welche vorzugsweise durch aneinander angrenzende Partikel gebildet sind. 5. Soundproofing component (1) according to one of claims 1 to 4, characterized in that the concrete body (2) at least partially, in particular contiguous, cavities, which are preferably formed by adjacent particles.
6. Schallschutzbauteil (1) nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass die Poren durch freie Zwischenräume zwischen einzelnen Partikeln der Zuschlagsstoffe gebildet sind. 6. Soundproofing component (1) according to one of claims 3 to 5, characterized in that the pores are formed by free spaces between individual particles of the additives.
7. Schallschutzbauteil (1 ) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Betonkörper (2) als haufwerksporiger Beton ausgebildet ist. 7. Soundproofing component (1) according to one of claims 1 to 6, characterized in that the concrete body (2) is designed as haufwerksporiger concrete.
8. Schallschutzbauteil (1) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Betonkörper (2) einen im Wesentlichen homogen Aufbau aufweist. 8. Soundproofing component (1) according to one of claims 1 to 7, characterized in that the concrete body (2) has a substantially homogeneous structure.
9. Schallschutzbauteil (1) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass in dem Betonkörper (2) eine, insbesondere im Wesentlichen korrosionsbeständige, Bewehrung, vorzugsweise umfassend verzinkter Stahl, angeordnet ist. 9. soundproofing component (1) according to one of claims 1 to 8, characterized in that in the concrete body (2) one, in particular substantially corrosion-resistant, reinforcement, preferably comprising galvanized steel, is arranged.
10. Schallschutzbauteil (1) nach Anspruch 9, dadurch gekennzeichnet, dass die Bewehrung als wenigstens zweidimensionales Gerüst ausgebildet ist. 10. Soundproofing component (1) according to claim 9, characterized in that the reinforcement is designed as at least two-dimensional framework.
11. Schallschutzbauteil (1) nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass der Schallschutzbauteil (1) als, insbesondere selbsttragende, vorzugsweise freistehende, Schallschutzwand (4) ausgebildet ist. 11. Soundproofing component (1) according to one of claims 1 to 10, characterized in that the soundproofing component (1) as, in particular self-supporting, preferably free-standing, soundproof wall (4) is formed.
12. SchallschutzbauteiJ (1) nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass der Schallschutzbauteil (1) als Paneel für eine Schallschutzwand (4) ausgebildet ist. 12. SchallschutzbauteiJ (1) according to one of claims 1 to 11, characterized in that the soundproofing component (1) is designed as a panel for a soundproof wall (4).
13. Schallschutzbauteil (1) nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass der Schallschutzbauteil (1) als Schallschutzbodenplatte (5) ausgebildet ist. 13. Soundproofing component (1) according to one of claims 1 to 10, characterized in that the soundproofing component (1) is designed as a soundproofing floor plate (5).
14. Schallschutzbauteil (1) nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass der Schallschutzbauteil (1) als Fahrzeugrückhaltesystem (6) zur Begrenzung einer Fahrbahn ausgebildet ist. 14. Soundproofing component (1) according to one of claims 1 to 10, characterized in that the soundproofing component (1) is designed as a vehicle restraint system (6) for limiting a roadway.
EP10807309.9A 2009-12-23 2010-12-09 Sound barrier component Active EP2516747B1 (en)

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AT522682B1 (en) * 2019-10-11 2021-01-15 Kirchdorfer Fertigteilholding Gmbh HUMP CONCRETE FOR A SOUND PROTECTION COMPONENT
AT526294A1 (en) 2022-07-05 2024-01-15 Kirchdorfer Fertigteilholding Gmbh TRACK COVER PLATE

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DE9208235U1 (en) * 1992-06-19 1992-08-27 Ed. Züblin AG, 7000 Stuttgart Plate-shaped, sound-absorbing element as a construction element for noise barriers on roads
FR2714681B1 (en) * 1994-01-04 1996-03-08 Sncf Acoustic protection screen element made of metal fiber concrete and use of such elements along a railway bridge.
DE4417402A1 (en) * 1994-05-18 1995-11-23 Gruenzweig & Hartmann Montage Sound insulating device for noise abatement on rail tracks
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