EP2817457A1

EP2817457A1 - Noise reduction device

Info

Publication number: EP2817457A1
Application number: EP12818468.6A
Authority: EP
Inventors: Thomas Danner; Bernhard Lichtberger; Erich Mayrhofer
Original assignee: ART Asamer Rubber Technology GmbH
Current assignee: SARANUS BETEILIGUNGSVERWALTUNGS GMBH
Priority date: 2011-11-22
Filing date: 2012-11-21
Publication date: 2014-12-31
Anticipated expiration: 2032-11-21
Also published as: US20150053502A1; RU2014125082A; WO2013075159A1; CN104246077A; CA2858850A1; JP2015501893A; EP2817457B1

Abstract

The invention relates to a noise reduction device (1) for arrangement on a traffic route, comprising at least one wall element (8) having a longitudinal extension (28a), wherein the wall element (8) is arranged on at least one base element (7) having a longitudinal extension (12) in the direction of the longitudinal extension of the wall element (28a), the base element (7) having a first front face (14) and a second front face (15), both front faces (14, 15) lying opposite each other along the longitudinal extension of the base element (12). The first front face (14) of the base element (7) is designed with a first curvature (16) and the second front face (15) of the base element (7) is designed with a second curvature (17), both curvatures (16, 17) extending perpendicularly relative to the longitudinal extension of the base element (12).

Description

Noise protection device

The invention relates to a noise protection device for arrangement on a traffic route comprising at least one wall element with a wall element longitudinal extension, wherein the wall element is arranged on at least one base element having a Sockelelement- longitudinal extent in the direction of the wall element longitudinal extent, wherein the base element has a first end faces and a second end face, and the two end faces along the base element longitudinal extent facing each other, a noise protection wall system comprising a plurality of longitudinally successively arranged protection devices and the use of the noise protection device.

Noise protection devices in the form of wall elements are used on or on traffic routes for noise protection. Usually, these protective devices are fixedly placed on or next to the traffic route, and a corresponding foundation is made for this purpose, on which or in which the stands for the noise barriers themselves, which are normally made of steel as I or H beams, are anchored become.

The AT 7 753 Ul describes a soundproofing element for use in railway construction. To insulate the sound generated when rolling the wheels on the tracks is provided that on an attachable to the ground, a footprint forming base element an insulating element is arranged, which preferably extends vertically in the height and with respect to the base element movable, preferably folded down , and / or is removably stored.

From DE 298 05 730 Ul a sound barrier for traffic routes with a supported on the ground support structure are fixed to the prefabricated, sound-absorbing wall elements known, the support structure comprises a plurality of prefabricated, vertical frame into which the wall elements are used, and wherein the Wall elements at least partially made of recycled material and / or immobilized waste materials.

DE 85 28 305 Ul describes a kit for the creation of unsupported noise barriers, the individual kit elements consist of noise protection wall elements, the have rearward plates on which Dämmstofflagen are arranged, which are covered with perforated plates, wherein at least one lateral end of the rear plates has a hinged formation with hinge axis, which is formed cooperable with the neighboring plate.

From AT 10 131 Ul a mobile noise barrier is known, which consists of a concrete base, a releasably connected thereto noise protection element and a transverse strut, which is releasably connected to both the concrete base and with the noise protection element consists. The noise protection element consists of highly absorbent noise protection panels in a steel construction and is mounted on the concrete base and fixed by means of a transverse strut.

From DE 44 19 886 AI a soundproofing coating for sound-emitting and / or sound-reflecting surfaces, in particular for railway superstructure, known, the soundproofing coating comprises a rubber granules, which is solidified by means of a vorzugswei- se elastically deformable plastic, wherein the coating additionally comprises a relatively high, at least partially open-pore air pore fraction.

From DE 24 07 281 AI a sound insulating material is known, in which two contacting layers are provided, each of which contains numerous inorganic particles which are thinly covered with an adhesive and connected thereto, with holes between the adjacent particles are formed. The particle sizes in each layer differ from each other in such a way that essentially all particles of a layer are more than twice greater than the maximum size of the particles in an adjacent layer. All particles in all layers are essentially in the size range between 0.1 mm to 15 mm.

WO 98/37276 AI describes a soundproofing device for reducing airborne sound propagation, comprising a track system and a running in track longitudinally and elastically deformable low noise protective wall made of rubber or plastic, wherein the arranged at a distance to the track low-noise protective wall on its side facing the track (inside) has a profiling that extends substantially over the entire wall height, while their side facing away from the track (outside) is designed mostly flat surface. The inside is at an angle α and the outside in one Angle ß, in each case with respect to the track perpendicular to the track inclined, the angle ß is greater than the angle α. The profiling of the inside is a system of lips, with the lips at an angle γ, relative to the track horizontal, to the track floor show. At the top, where the inner side and the outer side converge, the low-noise protective wall is terminated by a lip inclined towards the track, which faces upwards at an angle δ relative to the track. Furthermore, the low-noise protective wall has at least one cavity running in the longitudinal direction of the track.

From AT 8 619 Ul a fastening mechanism is known, which allows the use of a soundproofing wall without foundation. The attachment mechanism consists of a simple, easy-to-install and dismantle profile that can be connected to a rail. The simple assembly and disassembly is done by applying force to a mounting plate. A correspondingly bent mounting bracket keeps the soundproofing wall at the exact horizontal distance from the rail and simultaneously stabilizes the right-angled position to the track. A locking plate connects by snapping the soundproof wall with the attachment mechanism. The mounting bracket is covered with rubber or other elastic material for the protection and vibration damping of the rail and threshold. The offset of the assembly carrier during the transition from the threshold to the ballast bed downwards serves to embed it in the ballast and completely absorb the weight load of the soundproofing wall from the ballast bedding.

From AT 9 954 Ul a noise barrier for shielding the noise is known, which occurs by driving on railroad tracks, the height of both sides of a track arranged noise protection wall is about 0.5 m to 2 m. The distance between two - in a normal to a longitudinal direction of the track opposite each other - noise barriers is only in a range of about 3 to 5% greater than the width of a clearance gauge of the track, wherein the angle of the track facing side of the noise barrier in one area from about -15 to +15 ⁰ to the vertical and at a lower, resting on the ballast of the track end of the noise barrier on a side facing away from the track a flank nose is provided with a remote from said side remote nose end, with a horizontal one Angle of about 10 ⁰ to about 40 ⁰ includes. From AT 508 575 B 1, a protective device for mounting on a traffic route is known, comprising at least one wall element, wherein the wall element is arranged on at least one base element, which can be arranged without foundation on or adjacent to the traffic route, wherein the base element on a Ballast bed of a track can be arranged and not anchored in the ground, and the base element has at least one connecting element with which the base element with a threshold and / or a rail of a track is connectable.

It is the object of the present invention to simplify the construction of noise abatement devices for tracks. In particular, it is the object of the invention to provide an improved noise protection device.

This object is achieved independently by the above-mentioned noise protection device, by the aforementioned protective wall system and by the use of the noise protection device, wherein formed in the noise protection device, the first end face of the base member with a first rounding and the second end face of the base member with a second rounding are, with the two curves in the direction perpendicular to the base element longitudinal extent, the protective wall system is formed from the noise protection devices, and when using the protection device as a soundproof wall along a track, the soundproof wall at a distance from the adjacent rail between 50 cm and 120 cm is set up.

The advantage here is that due to the trained curves curve radii can be made easier. In addition, it is achieved that with this construction, the noise protection wall system higher attacking lateral forces withstand, since the forces are distributed by the adjoining noise protection devices on several noise protection devices, with a lateral sliding apart of the noise protection devices assembled condition of the noise barrier system can be prevented. In other words, the lateral mobility of the individual noise protection devices is reduced in the noise protection wall system, so that can be dispensed with a connection of the noise protection device to the rails or to the threshold, although these noise protection devices are placed at a very short distance to the rail, preferably without foundation, ie that they only on a ballast bed or possibly on a fixed bed Roadway. It is thus possible to approach very close to the sound source with the noise protection wall system, whereby the height of the noise protection devices can be reduced. It is thus also a higher security in the middle region between the tracks of two directions of orientation fixing the noise protection devices possible. By avoiding mechanical connections between the noise protection devices and the rails or sleepers, a simplified construction of the noise protection wall system is achieved.

According to a preferred embodiment, it is provided that the first rounding has a conical course and the second rounding has a convex course. The base elements or the entire soundproofing elements can thus all have the same shape, whereby on the one hand the manufacture of the elements and on the other hand their assembly are simplified. In addition, it is thus possible to produce tighter curve radii with greater stability of the soundproof wall.

It can further be provided that the wall element and the base element are formed integrally with each other. It can thus be significantly reduced assembly time of the sound barrier system. Conversely, however, the dismantling can be shortened or simplified by simply lifting the soundproofing device with a crane, which in particular benefits are achieved during maintenance work on the track or during mining work after train accidents.

According to another embodiment, it is provided that the wall element and / or the base element consist of a lightweight concrete with pores. It is therefore possible to monolithically form these soundproofing elements, so that a complex structure for achieving the soundproofing effect can be dispensed with. In addition, it is thus possible in a simple manner that soundproofing behavior by appropriate selection of the pore size or by providing a pore size spectrum or by the number of pores, i. easy to adjust the entire pore volume.

But it can also be provided that the wall element has a filling of rock wool or rubber granules. In particular, this wall element is used as a so-called field element. It is thus provided a wall element that a high Wit- terungsbeständigkeit, whereby these require no special treatment to improve the weather resistance and low maintenance can be performed, but at the same time a relatively high reduction of noise pollution is achieved by neighbors on the track.

To further reduce the noise pollution can be provided that is arranged on and / or in the wall element, a blocking element against sound waves. It is possible in this way to keep the total weight with improved sound reduction low. According to a variant of the noise protection wall system, it is provided that the noise protection devices are connected to one another in a form-fitting manner. It is thus possible to dispense with an additional non-positive connection, for example by means of retaining clips or screws. On the one hand, the assembly and disassembly of the noise protection wall system is in turn simplified by an exclusively positive connection, on the other hand, the production of the noise protection device is simpler, as can be dispensed to Eilegeteile, such as screw or the like., For producing a positive connection between the noise protection devices.

In order to reduce the risk that the noise protection device will change due to (micro) movements in the ballast bed in terms of their position, in particular with regard to the distance to the rails, it may be provided that only the first and / or the last noise protection device of the plurality arranged behind one another noise protection devices comprises or have at least one connecting element with which the noise protection device with a threshold and / or a rail of a track is connectable bar. Again, it is advantageous that this connection is limited to a maximum of two noise protection devices, whereby the assembly and disassembly of the noise barrier system can be further simplified. The positional stability of the further noise protection devices between the two end members is achieved by the positive connection of the individual noise protection devices.

For a better understanding of the invention, this will be explained in more detail with reference to the following figures. Each shows in a schematically simplified representation:

Fig. 1 shows the formation of a soundproofing device on a railroad in

Front view in the direction of the rail traffic route;

2 shows a soundproofing device in oblique view;

FIG. 3 shows the soundproofing device according to FIG. 2 in plan view; FIG. 4 shows a first end element for the soundproofing device according to FIG. 4 in oblique view;

5 shows the end element of Figure 4 in plan view ..; FIG. 6 a further end element for the soundproofing device according to FIG. 4 in an oblique view; FIG.

7 shows a detail of a noise protection wall system with several sound insulation devices according to FIGS 2 to 6 in an oblique view with rail connection ..;

8 shows the sound barrier wall system according to FIG. 7 in plan view; FIG.

9 shows a section of a further soundproofing wall system with several

Sound insulation devices according to a variant in an oblique view with rail connection;

FIG. 10 shows the sound barrier wall system according to FIG. 9 in plan view; FIG.

FIG. 11 shows the soundproof wall system according to FIG. 9 in an end view; FIG.

Fig. 12 shows a variant of a fastening element for fastening a

Wall element on a base element of a soundproofing device in front view; FIG. 13 shows the fastening element according to FIG. 12 in side view; FIG.

FIG. 14 shows the fastening element according to FIG. 12 in rear view; FIG. FIG. 15 shows the fastening element according to FIG. 12 in a plan view; FIG.

FIG. 16 shows a rail connection element for connecting a soundproofing device to a rail in plan view; FIG. FIG. 17 shows the rail connection element according to FIG. 16 in side view; FIG.

FIG. 18 shows the rail connection element according to FIG. 16 in oblique view; FIG.

19 shows a variant of a base element of the soundproofing device in FIG

Top view;

Fig. 20 shows a further embodiment of a base element of the soundproofing device in plan view. By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosures contained in the entire description can be mutatis mutandis to the same parts with the same reference numerals or component names. Also, the location information chosen in the description, such as above, below, laterally, etc. related to the directly described and illustrated figure and are mutatis mutandis to transfer to a new position to the new situation.

In Fig. 1, two variants of a soundproofing device 1 are shown which are very similar to each other and which are shown in more detail in Figs. 2 to 8 and 9 and 10 respectively. In particular, these noise protection devices 1 serve as noise protection walls in the area of track systems 2, as shown in FIG. 1, the sound protection device 1 has the advantage that it can be brought very close to track strands 3, so that in the range of wheels 4 of rail vehicles 5 and the track strands 3 also generate noise ringer height of the soundproofing device 1 can be effectively insulated or can be deflected into a no longer disturbing area.

These two soundproofing devices 1 according to FIG. 1 are, of course, arranged so that unhindered operation of rail vehicles 5 is made possible, that is to say they are arranged at a sufficient distance 6, 7 to the moving rail vehicles 5. Due to the construction of the noise protection devices 1, this distance 6, 7 to the two noise protection devices 1 between 0.5 m and 1.2 m, in particular between 0.7 m and 1 m, amount, so so the two noise protection devices 1 very close to the Sound source can be attached. The distance 6, 7 is measured between the edge of the outermost, the rails facing edge of the noise protection devices 1 and the center of the adjacent rail.

In FIGS. 2 and 3, the first variant of the protective device 1 according to FIG. 1, a so-called center element, is shown, which is arranged at least approximately centrally, in particular, between two track sections.

The noise protection device 1 comprises or consists of a (em) base element 7 and at least one (em) wall element 8, wherein a plurality of wall elements 8 can be used, for example two superimposed. Of course, also a different number of wall elements 8, which are arranged one above the other, are provided in the noise protection device 1.

Such a wall element 4 may for example have a length of about 3 m, a width of about 12 cm to about 20 cm and a height of about 80 cm to about 100 cm, these details are not to be understood as limiting.

This noise protection device 1 may consist of several parts, in particular the base element 7 and the wall element 8 may represent separate components of the noise protection device 1.

The base element 7 is preferably formed as a concrete base in the form of a planar element as shown in FIGS. 2 and 3. For example, such a base 3 have a width of about 1.2 m, a length of about 3 m and a height of about 0.26 m, and these versions have only exemplary character.

Preferably, a surface 9 is planar and optionally with a slope in the direction of longitudinal side end faces 10, 11, which extend in the direction of a base element longitudinal extension 12, is formed. The gradient can be only a few degrees, for example, between 0.5 ⁰ and 3 °, to drain water.

However, it is also possible for this base element 3 to be designed such that an at least approximately planar surface is formed in a middle region 13 on which the wall element (s) 8 are arranged, the width of this surface being in the direction of the tracks at least approximately equal to the width of the wall elements 8 or may be larger.

Preferably, however, the base element 7 is formed integrally with the wall element 8, that is produced in the production with the wall element 8 as a part.

The underside of the base element 3 is preferably flat, in order to achieve a larger footprint and thus a higher stability of the noise protection device 1. After the base element 7 is arranged on a ballast bed 14 (FIG. 1) of a track system 2, it may be advantageous if an elastomer element, for example a rubber mat, or a fleece is arranged on the underside of the base element 7, into which the ballast grains partially can be pressed. This elastomer element or fleece can be glued to the underside of the base element 7, it is also possible that it is inserted into the formwork for the preparation of the base element 7 and thus already connected to the concrete base during manufacture.

The base element 7 has a first end face 14 and a second end face 15, which are formed opposite one another along the base element longitudinal extension 12. As is apparent from FIGS. 2 and 3, the first end faces 14 are formed with a first rounding 16 and the second end face with a second rounding 17, wherein the two curves extend in the direction perpendicular to the base element longitudinal extent 12. The first rounding 16 has a first radius of curvature 18 and the second rounding 17 a second radius of curvature 19, wherein in this embodiment, the two radii of curvature 18, 19 parallel to the plane of the surface 9, as can be seen from Figures 2 and 3. The two radii of curvature 18, 19 can be of different sizes, but in the preferred embodiment they have at least approximately the same value, ie are at least approximately on.

It should be noted at this point that by "at least approximately" in the context of the description it is meant that deviations within the manufacturing tolerances are permissible, and a different meaning is mentioned separately.

The values of the two radii of curvature 18, 19 can be selected from a range of 0.75 m to 1.5 m, in particular from a range of 0.85 m to 1.2 m. For example, the two radii of curvature 18, 19 may have a size of 1 m.

With the curves 16, 17 it is achieved that the base element element 7 in a noise protection wall system 20, which is formed by the juxtaposition of a plurality of base elements 7 and, for example, in Fig. 7 fragmentary, in the direction of the base element longitudinal extension 12 have a certain mobility in the horizontal direction , so that a better replica of the curve radius is made possible, especially in the curved area of rails. However, due to the curves 16, 17, this mobility is not so great that the base elements 7 come out of mutual engagement, so that a stabilization of the noise protection wall system 20 in the longitudinal direction thereof is achieved as well. This in turn achieves the advantage that a connection of the base elements 7 to the rails or sleepers is not required, since the base elements 7 of the noise protection wall system 20 stabilize themselves essentially with respect to their relative position to one another. The two curves 16, 17 of the end faces 14, 15 may have different radii of curvature 18, 19. However, these two curves preferably have at least approximately the same radii of curvature 18, 19. In the embodiment variant shown in FIGS. 2 and 3, the first rounding 17 of the first end face 14 is curved inward, that is to say concave, and the second rounding 18 of the second end face 15 is curved outward, that is to say convex. In the noise barrier system 20 is formed by the juxtaposition of noise protection devices 1 a positive conclusion by the convex curve 17 of a first noise protection device 1 engages in the concave curve 16 of a second, subsequent noise protection device 1.

For arranging the wall element 8 on the base element 7, at least two anchor plates can be provided, which are arranged eccentrically and spaced apart from the two end sides 5, as is known in the AT 508 575 B 1, to which reference is expressly made in this regard. and thus belongs to the content of this description to this extent.

In the preferred embodiment of this Ausführungsva- variant shown in Figs. 2 and 3, however, the base member 7 is integrally formed with the wall element 8. In particular, these two elements are made of concrete, preferably one, in particular porous, lightweight concrete. But it is also possible that the base member 7 is made of a non-porous concrete to which the wall element 8 is poured from lightweight concrete, including corresponding formwork are used to obtain a one-piece noise protection device 1.

It should be noted that a lightweight concrete is understood to mean a concrete with a maximum volume weight of 2500 kg / m ³ . The lightweight concrete may have pores of a size selected from a range of 2 mm to 12 mm, in particular from a range of 4 mm to 8 mm. It is also the formation of pores of different sizes of advantage, since thus a wider range of sound frequencies can be covered. However, it is also possible to produce the wall element 8 of a different material, as will be described in more detail below. To offset this noise protection device 8 lifting lugs 21 may be arranged on the top of the wall element, in particular poured into the wall element 8, be.

At least some of the edges of the noise protection device 1 of this or all embodiments variant (s) can be made beveled. Likewise, the transition between the wall element 8 and the base element 7 can be made rounded.

FIGS. 4 and 5 and 6 show variants of the noise protection devices 1 in an oblique view and plan view, respectively. 4 and 5 show a first end element 22 and FIG. 6 shows a second end element 23 of the noise protection wall system 20, as shown in FIG. 7.

In contrast to the embodiment variant of the noise protection device 1 according to FIGS. 2 and 3, these end elements 22 and 23 are provided with wall elements 8 which at least partially have an oblique course. Accordingly, the height above the base element 7 of the wall element 8 of the embodiment of the noise protection device 1 according to FIGS. 4 and 5, starting from the end face 15 in the direction of the end face 14 and those of the embodiment of FIG. 8 in this direction from, at two variants oblique areas of the wall elements 8 can pass into a horizontally extending portion of the top, as shown in Figs. 4 to 6.

It should be noted, however, that although a separate embodiment of the end elements 22, 23 is advantageous, the noise protection device 1 according to FIGS. 2 and 3 can also be used for these end elements 22, 23.

After these noise protection devices 1 form the end elements 22, 23 of the noise protection wall system 20, the end face 15 of the base element 7 of the noise protection device 1 according to FIGS. 4 and 5 and the end face 14 of the base element 7 of the noise protection device 1 of FIG. 6 straight, ie without curves, be executed, since no further noise protection device 1 positively abuts against these end faces 14, 15. The execution of these end faces 14, 15 with the above-described curves 16, 17 is possible. It is also possible that these end elements 22, 23 are made shorter than the noise protection device 1 according to FIGS. 2 and 3.

In addition, these end elements 22, 23 as the noise protection device 1 according to FIGS. 2 and 3 may be executed, in particular with regard to the choice of material for the base element 7 and the wall element eighth

7 and 8 show the composite of several noise protection devices 1 noise protection wall system 20 in an oblique view and plan view. In particular, the form-fitting connection of the individual noise protection devices 1 can be seen from these figures.

Although only two noise protection devices 1 according to FIGS. 2 and 3 and the end element 22 can be seen in FIGS. 7 and 8, the number of noise protection devices 1 depends on the length of the route to be equipped with these noise protection devices 1 Thus, the illustration in FIGS. 7 and 8 is not to be understood as limiting. In addition, the end element 23 according to FIG. 6 can also be arranged on the left side in FIGS.

The noise protection devices 1 between the two end members 22 and 23 are not connected to the track 3. They are also not connected to the thresholds, but are unfounded on the ballast bed, not shown. Only the two end elements 22, 23 can preferably be connected to the track sträng 3, to fix the relative position of the noise barrier system 20 to the track 3 strand. A fixation of the further noise protection devices 1 between the end elements 22, 23 is not required due to the form-closure between the noise protection devices 1.

The connection of the end elements 22, 23 to the track sträng 3 - alternatively, these end elements 22, 23 may also be connected to a respective threshold - takes place via a respective connecting element 24. For connection of the connecting element 24 to the end element 22 or 23 can These can be provided with a coupling element 25 or 26 (see also FIGS. 4 and 6). In the simplest case, these coupling elements 25, 26 are designed as metal strips on which the connecting element 24 is screwed. The coupling elements 25, 26 may be fastened to the surface of the base element 7, for example with Screws. Preferably, however, these are inserted into the concrete body of the base element and in particular potted with this and anchored in this, for example with claws, round steel bars, flat steel tongues, etc. These coupling elements 25, 26 are inserted into the mold for the preparation of the base element before this with the Concrete is poured out.

But there are also other coupling elements 25, 26 used, with which the connection between the connecting element 24 and the noise protection device can be made. Optionally, the coupling elements 25, 26 can be dispensed with and the connection element 24 can be connected directly to the noise protection device 1, in particular screwed.

FIGS. 9 to 11 show that embodiment of the noise protection device 1 according to FIG. 1 which is arranged in the side regions of a track, that is to say not between two tracks. the so-called field element. Again, several noise protection devices 1 form the noise protection wall system 20, wherein also in this embodiment, the two end elements 22, 23 (in Figs. 9 to 11, only the end member 22 is shown) arranged and in particular can be connected to the connecting element 24 to the track 3. Reference should therefore be made to the above statements.

The base element 7 is preferably cast from concrete and designed as a flat element, but may have a smaller width than the base element 7 of the embodiment of FIGS. 2 and 3. Preferably, this width of the top is dimensioned such that in addition to the wall elements 8 a Walkway with a width of about 0.75 m can be formed.

In principle, it is possible that in this embodiment of the noise protection device 1, the base element 7 is formed integrally with the wall element 8. But preferred is the separate version, so that the wall elements, if necessary, can be easily removed, but the new placement is determined by the remaining base element 7, so that the re-installation is easier.

This base element 3 may also have the anchor plates, as described above, in order to be able to fasten the wall elements 8, ie the holders, for this purpose, the latter are not arranged in a central region, but in the region of one of the longitudinal side edges 27, 28, depending on whether the wall element 8 are arranged to the right or to the left. The longitudinal side edges 27, 28 extend in the direction of a wall element longitudinal extent 28 a.

However, a variant is preferred in which the wall element 8 is attached laterally to the base element 7 via a carrier element 29, which is better seen in FIGS. 12 to 15. With this support member 29, a holding member 30 is connected, which serves to support the wall elements 8. The holding element 30 is formed in particular as H-profile carrier, so that the wall elements 8 can be inserted into this without further connecting elements. Of course, if necessary, the wall elements 30 can be connected to the carrier element mechanically and / or positively.

The carrier element is in particular mechanically connected to a side face 31 of the base element 7, for example screwed thereto. This side surface is chamfered and jumps inwards, as shown in FIGS. 9 and 11 can be seen. By this obliquely with respect to the surface of the base member 7 extending side surface 31 a better grip of the support member 29 is achieved, especially with regard to the suction effect and the thrust of a verbeif expecting train.

The track surface 3 facing side surface 32 is formed starting from the top of the base element at least partially bevelled. By this bevel is achieved that the base element 7, taking into account the clearance of the rail vehicle (see Fig. 1) can be moved closer to the track 3 strand. It is thus a more efficient sound insulation despite low wall height, this can for example be between 0.7 m and 1.2 m, in particular between 0.8 m and 1 m, the wall element 8 achieved.

The base element 7 of this variant of the noise protection device 1 therefore preferably has a cross section in the form of an irregular pentagon, as can be seen from FIG. 11.

Also this base element 7 may have the lifting lugs 21. With regard to the curves 16, 17 of the end faces 14, 15 of the base element 7, the end elements 22, 23, reference is made to the above statements.

The wall element 4 itself may be formed from concrete, a rubber granulate / concrete mixture or a composite element consisting of two lateral cover walls with rubber granules arranged therebetween or rubber granules connected with a binder. There is also the possibility that commercial acoustical nonwovens are arranged to improve the acoustic effect on the side surfaces, in particular those surfaces which face the traffic route.

There is also the possibility that the wall element 4 is entirely formed of a plastic or a hard elastomer or the like.

If a rubber particle / concrete or rubber particle / plastic particle / plastic binder mixture is used, the proportion of rubber particles in this mixture may be selected from a range with a lower limit of 10% by volume and an upper limit of 70% by volume. or from a range with a lower limit of 20% by volume and an upper limit of 65% by volume or from an area with a lower limit of 25% by volume and an upper limit of 55% by volume ,

The rubber particle / concrete mixture may optionally also be added to a binder for plastics or the like. The proportion of the plastic binder may in both variants in the range between 5 wt .-% and 25 wt .-%, in particular between 10 wt .-% and 15 wt .-% amount. As plastic particles, e.g. Particles of PE, PP, PTFE, PVC, etc., especially recycled materials used. Optionally, the rubber particle / plastic particle / plastic binder mixture may also comprise a hydraulic binder, such as e.g. Cement, included.

Furthermore, there is a possibility that an average grain size of these rubber particles is selected from a range having a lower limit of 0.4 mm and an upper one

Limit of 4 mm or from a range with a lower limit of 1 mm and an upper limit of 3.5 mm or from an area with a lower limit of 1.5 mm and an upper limit of 3 mm. In the case of a filled with rubber granules wall element 4, this rubber granulate may have a particle size between 0.5 mm and 4 mm. It proves to be an advantage if different particle sizes of rubber granulate are arranged in a wall element 4, for example particle sizes of 0.5 mm and 2.5 mm and 4 mm, in order to achieve different degrees of filling and a different acoustic behavior. It is possible that cavities are formed between the individual rubber particles, wherein a void fraction between 5 vol .-%, and 30 vol .-%, based on the total occupied by the rubber granules volume may amount. About these cavities, a reduction of the noise level of the side facing away from the traffic is also achieved.

In general, the rubber particles can be provided in the context of the invention with a conventional plastic binder, wherein its proportion may be between 5 wt .-% and 15 wt .-%. Preferably, a polyurethane adhesive is used. Cement or concrete can in turn be used as the binder, although other binders are also possible in order to obtain a self-supporting wall element 8 produced from a rubber granulate.

With regard to the particle sizes of the rubber granules, it is advantageous if these are also used in the rubber particle / concrete mixture.

In addition, there is the possibility that the wall element 8 is constructed differently, so for example made of wood materials, which wood materials can also be designed as composites, for example, with a wooden battens on the two side walls, that is, those walls which are the traffic route and turned away , And can be arranged in between an acoustic filling or noise-reducing filling of an insulating material or the like.

In the case of filled with rubber granules wall elements 8, there is the possibility that they are also cast, for example, an elastomer, in particular a

Hard elastomer, or concrete, in which case a corresponding recess is provided between the two side walls, which is subsequently filled with rubber granules. A preferred embodiment of the wall element 8 provides rock wool as a filling for the cassettes.

It is also possible that in or on the wall element 8, a blocking element is arranged against sound waves, for example made of metal, plastic or concrete.

It should be noted that even with a variant embodiment of the noise protection device 1 according to FIGS. 2 and 3, ie the center element, such a wall element 8 can be arranged instead of the one-part wall element 8 described therein, although this is not the preferred embodiment of this noise protection device 1.

The wall elements 8 are preferably arranged on the base elements 7 in such a way that they overlap two adjoining base elements 7, whereby the composite within the noise protection wall system 20 can be improved. There is also the possibility that the base element 7 has a length in the direction of the track extension, which corresponds at least approximately to the length of the wall elements 8 in the same direction.

For the sake of completeness, it should be noted that the two end elements 22, 23 are shorter than the remaining noise protection devices 1.

If necessary, there is also the possibility that the wall element 8 is mechanically connected to the base element 7.

The base element 7 is preferably not anchored in the ground, so is fundamentally on a ballast bed.

In FIGS. 12 to 15, the carrier element 29 is shown in different views. This support element 29 consists in particular of a metallic material, preferably of steel. One of the wall element 8 (eg Fig. 10) repellent outer edge 33 is executed at least partially round, this form is not intended to be limiting. Rather, angular embodiments, etc., can be used. In essence, the support member is divided into a lower portion 34 and an upper portion 35. The upper portion 35 forms a contact surface 36 for the support member 30, so for example, the H-profile support described above. This contact surface 36 is aligned with its longitudinal extent to the installed state at least approximately vertically.

The lower region 34 in turn has a connection surface 37, via which the carrier element 29 is connected to the base element 7, in particular is screwed to the side surface 31 described above. For this purpose, this connection surface 37 may have corresponding openings 38.

The connection surface 37 is arranged at an angle 39 to the vertical, as can be seen from FIG. 13, so that the connection surface 37 bears against the side surface 31 of the base element 7 at least approximately planar. The angle 39 may be selected from a range of 120 ⁰ to 180 °. Accordingly, the side surface 31 is inclined at least approximately at the corresponding angle.

At the top of the support member 29, a cover plate 40 may be provided with which the open-top end of the support member 30 may be covered (eg, Fig. 10). However, there is also the possibility that the carrier element 29 itself forms the holding element 30 for the wall element 8. In this embodiment, the contact surface 36 forms the central web of the H-shaped cross-section. Rearward two contact surfaces 41, 42 are formed, which may be formed by a vertical leg 43. Support surface 44, 45 are formed between the lower region 34 and the upper region 33 and extend in the installed state of the carrier element 29 at least approximately in the horizontal direction and form a support for the wall element 8. The wall element 8 can thus preferably be clamped between one of the support surfaces 44, 45 and the cover plate 40. After insertion of the wall elements 8 into the carrier element 29, the area open to the rear can be closed with a further, in particular plate-shaped, cover element 46 (FIG. 9), so that again an H-shaped cross section results in plan view. The carrier element 29 can also be used as part of the earthing of the noise protection device 1.

16 to 18 show the connecting element 24, with which the end elements 22 and 23 are connected to the strand 3 (Fig. 11), in different views.

The connecting element 24 is designed in particular as a clamp and consists essentially of two parts (apart from the illustrated screw connection of these two parts), namely a clamping element 47 and a connecting element 48.

Via the connecting element 48, the connecting element 29 is connected to the base element 7. For this purpose, this connection element 48 may be formed at the rear end at least approximately L-shaped with an at least approximately vertically oriented leg 49.

The clamping element 47 is formed at least approximately bow-shaped or at least approximately sled-shaped and has at its front end hook-shaped end portions 50, 51 which engage around the track 3 from the underside and are hooked thereto, as shown e.g. from FIGS. 7, 9 and 11 can be seen. In order to achieve the clamping effect, the front end of the attachment element 48 is formed with a roughly U-shaped cross section in side view and thus forms a clamping element part 52. The clamping element part 52 has at least one abutment element 53, for example one, at its front at least approximately vertical leg Rubber damper, on, which rests in the installed state in the area above the rail foot on the track rope 3 and thus clamps this.

Preferably, this connection is designed so that a certain relative movement between the base element 7 and rail is made possible. In Fig. 19, a further embodiment of the noise protection device 1 is shown as a central element in the noise protection wall system 20 in plan view. This in turn comprises the base element 7 and the wall element 8. In contrast to the above embodiments, in this embodiment, a base element 7 exclusively convex Rounding 17 and the adjoining base element 7 only concave curves 16, wherein the radii of curvature are again in turn in terms of their value in all base element 7 equal. 20 shows a variant of the noise protection device 1 in the noise protection wall system 20 in side view with the base element 7 and the wall element 8. In this embodiment, the curves 16, 17 are not horizontal but vertical.

It should be noted that, although in the illustrations in FIGS. 19 and 20, the noise protection devices 1 are not shown adjacent to each other, these are arranged as in all variants of the noise protection devices 1 frontally adjacent to each other in the noise barrier system 20.

In a further embodiment not shown, there is the possibility that the base element 7 has the curves 16, 17 running both in the horizontal direction and in the vertical direction, so that an at least approximately spherical segment-shaped surface of the end faces 14, 15 (for example FIG.

In general, it should be noted that the curves 16, 17 can be provided in all embodiments with a radius of curvature that increases or decreases by the course of the rounding.

Furthermore, in all variants of the noise protection device 1 and the noise protection wall system 20 that between the noise protection devices 1 at the end faces 14, 15 at least partially at least one sealing element, for. B. a Compriband N is arranged.

It is also advantageous if the base element 7 has ground connections for the electrical grounding.

The embodiments show possible embodiments of the noise protection device 1, wherein it should be noted at this point that various combinations of the individual variants are possible with each other and this variation possibility due to Teaching for technical action by objective invention in the skill of those working in this technical field is the expert.

For the sake of order, it should finally be pointed out that in order to better understand the structure of the soundproofing device 1, these or their components have been shown partly unevenly and / or enlarged and / or reduced in size.

It should also be noted that parts of the noise protection device 1 and of the noise protection wall system 20 can form independent inventions. This relates in particular to the formation of the base element 7 and / or the wall element 8 of porous lightweight concrete, the formation of the wall element 8 with rock wool, the connecting element 24 for connecting the noise protection device 1 and the noise barrier system 20 to a rail and the support member 29 for connecting the wall element 8 with the base element 7th

REFERENCE NUMBERS

Noise protection device 36 contact surface

Track system 37 Connecting surface

Railroad track 38 breakthrough

Wheel 39 angle

Rail vehicle 40 cover plate

Distance 41 contact surface

Base element 42 contact surface

Wall element 43 vertical leg

Surface 44 bearing surface

Longitudinal side face 45 bearing surface

Longitudinal side end face 46 cover element

Base element longitudinal extension 47 Clamping element

Center area 48 connection element

Face 49 thighs

End face 50 end area

Rounding 51 end area

Rounding 52 clamping element part

Radius of curvature 53 contact element

radius of curvature

Noise barrier system

Lifting eye

end element

Connection selement

coupling element

Longitudinal side edge

Wall element longitudinal extension

support element

retaining element

side surface

outer edge

Area

Claims

Patent claims

1. Noise protection device (1) for arrangement on a traffic route comprising at least one wall element (8) with a wall element longitudinal extension (28a), wherein the wall element (8) is arranged on at least one base element (7) having a base element longitudinal extent (12 ) in the direction of the wall element longitudinal extension (28a), the base element (7) having a first end face (14) and a second end face (15), and the two end faces (14, 15) along the base element longitudinal extension (12) lie opposite one another, characterized in that the first end face (14) of the base element (7) with a first rounding (16) and the second end face (15) of the base element (7) with a second rounding (17) are formed, wherein the both curves (16, 17) in the direction perpendicular to the base element longitudinal extension (12).

2. noise protection device (1) according to claim 1, characterized in that the first rounding (16) has a conical shape and the second rounding (17) has a convex profile.

3. noise protection device (1) according to claim 1 or 2, characterized in that the wall element (8) and the base element (7) are integrally formed with each other

4. noise protection device (1) according to one of claims 1 to 3, characterized in that the wall element (8) and / or the base element (7) consist of a porous lightweight concrete.

5. noise protection device (1) according to one of claims 1 to 4, characterized in that the wall element (8) has a filling of rock wool or rubber granules.

6. noise protection device (1) according to one of claims 1 to 5, characterized in that on and / or in the wall element (8) is arranged a blocking element against sound waves.

7. Noise protection wall system (20) comprising a plurality of longitudinally successively arranged noise protection devices (1), characterized in that the noise protection device (1) are formed according to one of claims 1 to 6.

8. Noise protection wall system (20) according to claim 7, characterized in that the noise protection devices (1) are positively connected with each other.

9. Noise protection wall system (20) according to any one of claims 7 or 8, characterized in that only the first and / or the last noise protection devices (1) of the plurality of successively arranged noise protection devices (1) at least one connecting element (24) or have, with the the noise protection device (1) is connectable to a threshold and / or a rail of a track.

10. Use of the noise protection device (1) according to one of claims 1 to 6 as a sound barrier along a track, wherein the sound barrier is placed at a distance from the adjacent rail between 50 cm and 120 cm.