US20170275834A1 - Anti-noise facility for tracked transport road and tracked transport road provided with such a facility - Google Patents
Anti-noise facility for tracked transport road and tracked transport road provided with such a facility Download PDFInfo
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- US20170275834A1 US20170275834A1 US15/509,193 US201515509193A US2017275834A1 US 20170275834 A1 US20170275834 A1 US 20170275834A1 US 201515509193 A US201515509193 A US 201515509193A US 2017275834 A1 US2017275834 A1 US 2017275834A1
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- Prior art keywords
- noise
- track
- panel
- runway
- acoustic
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0011—Plank-like elements
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- 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
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
- E01B2/003—Arrangement of tracks on bridges or in tunnels
-
- 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
- E01F8/0035—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with undulated surfaces
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0047—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with open cavities, e.g. for covering sunken roads
- E01F8/0064—Perforated plate or mesh, e.g. as wall facing
-
- 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
Definitions
- the invention relates to an anti-noise installation for a guided transport track , in particular for a viaduct having a U-shaped cross section.
- the invention also relates to a guided transport track, and in particular a viaduct, equipped with an installation according to the invention.
- Public guided transport such as metros and trains generate high noise levels that result in particular from the interactions between the wheels of the transport vehicles and the runways such as rails on which these vehicles travel.
- This problem of noise is a particular nuisance when the tracks are laid out in urban areas, in the immediate vicinity of residential zones, in particular in the context of viaducts or overhead tracks.
- the acoustic barriers are ineffective, or even aggravate the noise situation for nearby residents living in buildings located higher than the viaduct, because of the multiple reflections off the vehicle bodies or the screens on the opposite track.
- this solution requires a large amount of space and has significant wind resistance, which has a not insignificant impact on the forces to which the engineering structure is subjected, and weighs down the structure on which it is used.
- engineering structures, and in particular viaducts that have been oversized during construction with anti-noise barriers of this kind. Only oversized viaducts can subsequently withstand new stresses and therefore be equipped with these anti-noise barriers.
- Other structures are condemned to be noisy and therefore to be detrimental to the nearby residents and/or to make the surrounding areas unpropitious for residential accommodation.
- the invention aims to overcome at least some of the drawbacks of the known solutions for limiting the noise heard by those living alongside engineering structures, of the bridge or viaduct type, in particular viaducts having a U-shaped cross section, in particular in the form of a splayed U.
- the invention aims to provide an anti-noise installation for a viaduct that does not impact on the visual field of the nearby residents.
- the invention also aims to provide, in at least one embodiment, an anti-noise installation that can be adapted to various viaduct designs without major difficulty.
- the invention also aims to provide, in at least one embodiment of the invention, an anti-noise installation that is easy to maintain.
- the invention also aims to provide, in at least one embodiment of the invention, an installation that makes it possible to respond to various distinct performance levels.
- the invention also aims to provide, in at least one embodiment, a viaduct equipped with an anti-noise installation according to the invention.
- the invention relates to an anti-noise installation for a guided transport track having a U-shaped cross section, in particular in the form of a flared U, the two branches of which form the lateral walls of the track and the central zone of which, connecting the two branches, forms at least one runway for a guided transport vehicle, characterised in that said installation comprises a plurality of acoustic panels arranged relative to one another so as to form at least one chamber for confining a source of noise resulting from the passage of a vehicle on said runway, which chamber can be provided around said noise source while extending as far as a free end of at least one branch of the U, each acoustic panel forming at least one portion of a partition of a noise-confinement chamber.
- the invention therefore makes it possible to form at least one noise-confinement chamber arranged around the source of the noise, which results from the passage of the wheels of a vehicle over the runway, for example wheels of a train on the rails, and the free end of the lateral walls of the U-shaped viaduct.
- a noise-confinement chamber is a chamber that has partitions suitable for optimally insulating the space containing the sources of noise from the space downstream thereof and thus for attenuating the noise.
- the invention proposes confining the sources of noise resulting from the dynamic interaction of the wheels of a vehicle with the runway by using the space available between these sources and the lateral walls of the U-shaped viaduct.
- the invention proposes using a plurality of acoustic panels and arranging them relative with one another so as to form various partitions of at least one noise-confinement chamber without these exceeding the outer dimensions of the viaduct, such that the visual impact of the installation is limited.
- the invention uses and optimises the U-shape of the viaduct by forming a noise-confinement chamber that lies entirely within the permitted space between the source of the noise and the free end of the branches of the U.
- each portion of the U-shaped viaduct is used to reduce the noise emissions.
- the invention therefore takes advantage of the specific shape of the viaduct for reducing the noise emissions by integrating various acoustic panels therein.
- the confinement chamber is provided around the source of the noise, extending as far as the free end of the lateral walls.
- the acoustic panels do not extend beyond the viaduct.
- no acoustic panel projects beyond the free end of the lateral walls. All the acoustic panels are therefore provided between the lateral walls of the viaduct.
- the visual impact of an anti-noise installation is therefore zero for the nearby residents.
- a viaduct that is carefully designed and that has aesthetic curves is therefore not compromised by the arrangement of an anti-noise installation according the invention, unlike the noise-reduction barriers of the prior art.
- the confinement chamber is formed by arranging a plurality of acoustic panels, each panel forming at least one portion of a partition of a confinement chamber. It is therefore particularly easy to adapt the shape and dimensions of the noise-confinement chambers to the dimensions of the vehicles travelling on the track by moving and/or modifying the shape and dimensions of one or more acoustic panels.
- an installation according to the invention makes it possible to adapt the sound attenuation produced to a specific requirement by modifying the shape of the confinement chamber produced by the arrangement of the acoustic panels.
- the performance may also be determined by the type of acoustic panels used.
- only some of the acoustic panels of the plurality of acoustic panels may be used.
- the confinement chamber is preferably formed by the combination of the acoustic panels, the vehicle and the U-shaped viaduct.
- the acoustic panels are at least arranged so as to form partitions where the vehicle and the viaduct do not form walls preventing the propagation of the noise.
- each acoustic panel is either an absorbent panel or a blocking panel.
- An absorbent panel is an acoustic panel comprising a material suitable for absorbing at least some of the noise that reaches it.
- a blocking panel is an acoustic panel formed of a material suitable for blocking the propagation of the acoustic waves that reach it.
- an installation according to the invention comprises at least one acoustic panel, referred to as a cap, suitable for being mounted on the free end of at least one branch of the U, in parallel with said runway, extending in the direction of the branch of the U facing the branch on which it is mounted, so as to form a top partition of a noise-confinement chamber.
- a cap suitable for being mounted on the free end of at least one branch of the U, in parallel with said runway, extending in the direction of the branch of the U facing the branch on which it is mounted, so as to form a top partition of a noise-confinement chamber.
- Each cap forms an upper partition of at least one noise-confinement chamber.
- Each cap is arranged at the end of a lateral wall of the track towards the lateral wall of the opposite track, in parallel with the runway. In other words, each cap delimits the upper part of the chamber while not extending beyond the viaduct.
- An anti-noise installation according to the invention and according to this variant therefore does not create a visual impact for nearby residents.
- Each cap forms, together with the lateral wall of the U-shaped viaduct on which it is arranged, a cavity that traps the acoustic waves emitted by the noise source, which substantially reduces the noise transmitted to those living near the viaduct when vehicles pass over the transport track.
- the cap may have dimensions so as to extend as close as possible to the vehicle travelling on the track in order to limit to the maximum possible extent the leakage surface formed by the space between the free end of the cap and the vehicle.
- an anti-noise installation comprises at least one acoustic panel, referred to as a skirt, suitable for being carried by said vehicle perpendicularly to said runway, and at least one acoustic panel, referred to as a bottom screen, suitable for being mounted on said runway facing said skirt, so as form a lateral partition of at least one noise-confinement chamber.
- An anti-noise installation therefore makes it possible to form, by combining a skirt carried by the vehicle and a bottom screen mounted on the runway, a lateral partition of a localised noise-confinement chamber that moves when the vehicle moves.
- the chamber is only formed when the train is present on the viaduct.
- This lateral partition is not continuous, but has a space between the skirt and the bottom screen to enable the vehicle to travel on the track.
- This space between the bottom screen and the skirt determines the leakage surface towards the outside of the confinement chamber to which the formed partition belongs.
- This surface can therefore be parameterised by adapting the dimensions of the skirt and of the bottom screen to the dimensions of the vehicles travelling on the track.
- the installation comprises two skirts carried laterally on each side of the vehicle and a bottom screen mounted on the track facing each skirt.
- an anti-noise installation comprises at least one acoustic panel, referred to as a lateral panel, suitable for being mounted in the vicinity of a lateral wall of the track, perpendicularly to the runway, so as to form a lateral partition of at least one noise-confinement chamber.
- a lateral panel suitable for being mounted in the vicinity of a lateral wall of the track, perpendicularly to the runway, so as to form a lateral partition of at least one noise-confinement chamber.
- the installation comprises at least one acoustic panel, referred to as a lateral mat, suitable for being attached to the lateral wall of the track, forming a branch of the U, so as to form a lateral partition of at least one noise-confinement chamber.
- a lateral mat suitable for being attached to the lateral wall of the track, forming a branch of the U, so as to form a lateral partition of at least one noise-confinement chamber.
- a lateral mat can follow the shape of the lateral wall of the U-shaped track so as to form a lateral partition of a noise-confinement chamber.
- an anti-noise installation comprises at least one acoustic panel, referred to as a slab, suitable for being attached to the runway so as to form a bottom partition of at least one noise-confinement chamber.
- said acoustic panels in particular the absorbent panels, are suitable for being arranged in various distinct configurations so as to form at least one noise-confinement chamber that is compatible with the design of said guided transport track on which the installation is used.
- An installation according to this variant makes it possible to adapt the design of the confinement chambers formed by the arrangement of the acoustic panels, in particular the absorbent panels, to various types of track and to the specific constraints and requirements of each track.
- an installation according to the invention further comprises means for removably attaching said acoustic panels, in particular the absorbent panels, so as to allow easy installation/removal of each acoustic panel, in particular of each absorbent panel.
- the installation and removal of an acoustic panel on the track or on the vehicle is done by means of removable attachment means, which makes it easier to maintain an anti-noise installation according to the invention and which makes it possible to easily adapt the design of the chambers formed by the acoustic panels to the dimensions of the vehicles travelling on the track.
- removable attachment means comprise, for example, means of the screw-and-nut type.
- said acoustic panels are arranged relative to one another so as to form at least two noise-confinement chambers that can be provided in series between the noise source and a free end of at least one branch of the U.
- the installation forms at least two noise-confinement chambers arranged in series between the noise source and the outside of the viaduct.
- the first confinement chamber leads into the second confinement chamber, which leads to the outside of the viaduct, at the cap.
- the first chamber comprises, for example, a bottom partition formed by slabs, lateral partitions formed by skirts and bottom screens, and a top partition formed by the vehicle.
- the second confinement chamber comprises, for example, a bottom partition formed by slabs, lateral partitions formed respectively by a skirt and a bottom screen (this partition is common with the first chamber), and by a lateral mat, and a top partition formed by a cap.
- the space between the skirt and bottom screen of the common partition forms a passage from the first chamber to the second chamber.
- the space between the free end of the cap and the vehicle forms a leakage surface of the second chamber.
- an anti-noise installation according to the invention can be used in connection with a guided transport track comprising two adjacent runways.
- the anti-noise installation advantageously comprises at least one acoustic panel, referred to as a central panel, suitable for being attached to the track between the two runways while extending perpendicularly to the runways so as to form a lateral partition of at least one noise-confinement chamber.
- At least one absorbent acoustic panel is formed of a material chosen from the group comprising porous concrete, timber concrete, rubber concrete, rockwool, rockwool, steel, PVC, EPDM or a combination of a plurality of these materials.
- Each of these materials offers good acoustic and/or structural performance and can be used to form one or more absorbent acoustic panels of an anti-noise installation according to the invention.
- the invention also relates to a guided transport track having a U-shaped cross section, in particular in the form of a flared U, the two branches of which form the lateral walls of the track and the central zone of which, connecting the two branches, forms a runway for a guided transport vehicle, characterised in that it comprises an anti-noise installation according to the invention.
- the invention also relates to an anti-noise installation and a track equipped with an anti-noise installation, characterised in combination by all or some of the features mentioned above or below.
- FIG. 1 is a schematic perspective view of a guided transport track according to an embodiment, equipped with an anti-noise installation according to an embodiment of the invention
- FIG. 2 is a schematic cross-sectional view of FIG. 1 ;
- FIG. 3 is a schematic perspective view of a guided transport track equipped with an anti-noise installation according to an embodiment of the invention
- FIG. 4 is a schematic cross-sectional view of FIG. 3 ;
- FIG. 5 is a schematic cross-sectional view of a guided transport track equipped with an anti-noise installation according to an embodiment of the invention, in which caps and bottom screens are shown;
- FIG. 6 is a schematic cross-sectional view of a guided transport track equipped with an anti-noise installation according to an embodiment of the invention, in which lateral mats are shown;
- FIG. 7 is a schematic cross-sectional view of a guided transport track equipped with an anti-noise installation according to an embodiment of the invention, in which a central panel is shown;
- FIG. 8 is a schematic cross-sectional view of a guided transport track equipped with an anti-noise installation according to an embodiment of the invention, in which caps, lateral panels, a central panel and bottom screens are shown;
- FIG. 9 is a schematic cross-sectional view of a guided transport track equipped with an anti-noise installation according to an embodiment of the invention, in which absorbent slabs are shown;
- FIG. 10 is a schematic cross-sectional view of a guided transport track equipped with an anti-noise installation according to an embodiment of the invention, in which lateral panels, bottom screens and a central panel are shown;
- FIG. 11 is a schematic cross-sectional view of a guided transport track equipped with an anti-noise installation according to an embodiment of the invention, in which caps, lateral panels, bottom screens and a central panel are shown.
- each element of the anti-noise installation is described as it is arranged when the installation is mounted on a guided transport track. This arrangement is in particular shown in FIGS. 2 and 4 .
- a guided transport track according to the invention intended to be equipped with an anti-noise installation according to the invention has a cross section in the shape of a U, the two branches of which form the lateral walls 15 , 16 of the track and the central zone of which, connecting the two branches, forms runways 17 , 18 for a guided transport vehicle 50 .
- the guided transport track is a track comprising two adjacent runways 17 , 18 so that two vehicles can pass each other.
- the anti-noise installation arranged in relation to the runway 18 will be described precisely, it being understood that the anti-noise installation may be symmetrical and have an identical design in relation to the runway 17 .
- the anti-noise installation according to the invention comprises a plurality of acoustic panels arranged relative to one another so as to form at least one chamber 20 for confining the noise resulting from the passage of a vehicle over a runway 18 .
- This confinement chamber 20 is shown schematically by a dashed line in FIG. 2 .
- the chamber 20 surrounds the noise-generating zone that is formed by the wheels 51 of the vehicle 50 and the rails 52 carried by the runway 18 .
- This chamber 20 extends in the noise-formation zone as far as the free end of at least one lateral wall 16 of the track.
- the acoustic panels are all absorbent panels. This being the case, according to other embodiments, one or the other of the absorbent panels described below may be replaced by a blocking panel.
- the invention makes it possible to form one or more noise-confinement chambers by using at least some of these various absorbent panels and arranging said panels relative to one another.
- the invention aims to form at least one lateral partition for preventing noise from propagating laterally towards the end of the viaduct, and a top partition for preventing the propagation of noise outside the viaduct.
- FIGS. 1 and 2 show a design of an anti-noise installation according to the invention, in which only a central panel 35 , absorbent slabs 34 , caps 30 , 31 and mats 38 , 39 are used to form a noise-confinement chamber 20 .
- FIGS. 3 and 4 show another design in which skirts 36 a, 36 b, bottom screens 37 a, 37 b, lateral panels 32 , 33 and a central panel 35 are used to form a first noise-confinement chamber 22 and a second chamber 21 into which the chamber 22 leads.
- This design affords a substantial reduction in the noise by arranging two noise-confinement chambers 21 , 22 in series.
- each absorbent panel will be described in relation to FIGS. 5 to 11 .
- caps 30 , 31 and bottom screens 37 a, 37 b are shown for purposes of illustration and clarity.
- the caps are formed according to this embodiment from porous concrete and may be crenelated on the bottom part 60 oriented towards the runway 17 so as to increase the absorbent surface area.
- the caps may be formed of extruded EPDM, or from folded sheet metal having a thickness of, for example, 0.8 mm.
- each cap has holes 61 extending in parallel with the runway and suitable for receiving attachment means of the screw-and-nut type.
- each cap has a top surface having a slight slope, for example of approximately 3%, towards the runway, for allowing rainwater to run off.
- the caps extend over a distance of, for example, 10 to 20 cm from the edge of the lateral wall on which they are mounted and extend along the track over a distance of, for example, 6 m.
- FIG. 5 also shows bottom screens 37 a, 37 b intended to form, together with the skirts 36 a , 36 b, not shown in FIG. 5 , at least one lateral wall of a noise-confinement chamber.
- the bottom screens 37 a, 37 b of the embodiment in FIG. 5 have a structure identical to that of the caps 30 , 31 described in relation to FIG. 4 .
- the mat 39 is shown in detail for purposes of illustration and clarity. It is, for example, formed of timber concrete or rubber concrete and is applied directly against the lateral wall 16 of the viaduct. According to the embodiment in FIG. 6 , the mat 39 also carries a rack 64 pegged directly in the concrete of the viaduct. This rack 64 is intended to carry electric cables used for the functioning of the guided transport and/or for the viaduct. In this case, the mat 39 may be held against the lateral wall by means of the attachment means of the rack 64 . According to another embodiment, the lateral mat is directly attached to the lateral wall by attachment means of the nails-for-insulation type. The lateral mat 39 may be crenelated in order to maximise the absorbent surface area.
- central panel 35 is shown in detail for purposes of illustration and clarity. It is, for example, formed by two panels made from porous concrete or timber concrete. It may further comprise an H-shaped steel profile that covers the edges of the two panels and thus mechanically holds these panels in place. The panel further comprises two plates welded to each longitudinal end of the central panel so as to allow attachment of the panel to the runway.
- FIG. 8 in addition to a central panel 35 , a lateral panel 33 , a bottom screen 37 a and a cap 31 according to another embodiment of the invention are shown.
- the lateral panel 33 is a timber concrete panel surrounded by a protective metal sheet.
- the cap 31 is a cap made from timber concrete surrounded by a protective metal sheet.
- the bottom screen is made from timber concrete surrounded by a protective metal sheet.
- the protective metal sheet is, for example, a sheet 1.5 mm thick and the timber concrete has a thickness of, for example, 133 mm. Naturally, according to other embodiments, the thicknesses and materials may be chosen differently without calling into question the subject matter of the invention.
- absorbent slabs 34 are shown. These slabs form the bottom partitions of the confinement chambers.
- absorbent slab 34 a made from rubber concrete or porous concrete
- first slab 34 b in two parts for following the drainage slope of the track
- second slab 34 c in two parts for following the drainage slope of the track in the central zone of the track.
- the central panel 35 , the lateral panels 32 , 33 and the bottom screens 37 a are formed of PVC and rockwool.
- Panels of this kind are, for example, formed by two heat-welded PVC half-shells that surround the rockwool.
- the rockwool is 10 cm thick and the half-shells have a thickness of a few mm.
- the half-shells are also perforated every 20 mm, each hole having a diameter of 10 mm.
- the thickness of the materials and the frequency and size of the perforations may be different.
- the central panel 35 , the lateral panels 32 , 33 , the bottom screens 37 a and the caps 30 , 31 are formed of perforated sheet metal and rockwool.
- the perforated metal sheet has a thickness of, for example, 0.6 mm and the rockwool a thickness of 10 cm.
- Panels of this kind are, for example, formed by two heat-welded PVC half-shells.
- the invention is not limited solely to the embodiments described.
- other types of material may be used to form the acoustic panels, in particular the absorbent panels.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Bridges Or Land Bridges (AREA)
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- Road Paving Structures (AREA)
- Body Structure For Vehicles (AREA)
- Railway Tracks (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention relates to anti-noise installation for a guided transport track having a U-shaped cross section, the two branches of which form the lateral walls (15, 16) of the track and the central zone of which, connecting the two branches, forms at least one runway (18) for a guided transport vehicle (50), characterised in that said installation comprises a plurality of acoustic panels (30, 31, 34, 35, 38, 39) arranged relative to one another so as to form at least one chamber (20) for confining the noise resulting from the passage of a vehicle (50) over at least one runway (18), which chamber can be provided around said noise source while extending as far as a free end of at least one branch of the U, each panel (30, 31, 34, 35, 38, 39) forming at least one portion of a partition of a noise-confinement chamber (20).
Description
- The invention relates to an anti-noise installation for a guided transport track , in particular for a viaduct having a U-shaped cross section. The invention also relates to a guided transport track, and in particular a viaduct, equipped with an installation according to the invention.
- Public guided transport such as metros and trains generate high noise levels that result in particular from the interactions between the wheels of the transport vehicles and the runways such as rails on which these vehicles travel.
- This problem of noise is a particular nuisance when the tracks are laid out in urban areas, in the immediate vicinity of residential zones, in particular in the context of viaducts or overhead tracks.
- One of the technical solutions frequently used on this type of track is that of installing acoustic barriers two to three metres high that border the track so as to trap the noise and limit the propagation thereof beyond the immediate vicinity. These barriers make it possible to counter the propagation of noise by reflecting the acoustic waves that reach the internal face of the barrier.
- This solution does however have several drawbacks, including the fact that the field of vision of the nearby residents is obstructed due to the presence of particularly imposing acoustic barriers.
- Apart from the visual impact, the acoustic barriers are ineffective, or even aggravate the noise situation for nearby residents living in buildings located higher than the viaduct, because of the multiple reflections off the vehicle bodies or the screens on the opposite track.
- Furthermore, this solution requires a large amount of space and has significant wind resistance, which has a not insignificant impact on the forces to which the engineering structure is subjected, and weighs down the structure on which it is used. Thus it is only possible to equip engineering structures, and in particular viaducts, that have been oversized during construction with anti-noise barriers of this kind. Only oversized viaducts can subsequently withstand new stresses and therefore be equipped with these anti-noise barriers. Other structures are condemned to be noisy and therefore to be detrimental to the nearby residents and/or to make the surrounding areas unpropitious for residential accommodation.
- Finally, the solution of anti-noise barriers provided along tracks does not make it possible, once the barriers have been installed along the track, to modify the performance level, unless the anti-noise barriers are replaced by new barriers.
- It is therefore necessary to provide a novel solution for limiting the noise caused by the passage of guided transport vehicles on engineering structures of the viaduct or bridge type.
- It is also necessary to provide a solution that makes it possible to adapt all types of viaduct, in particular viaducts that have not been oversized during construction.
- It is also necessary to provide a solution that makes it possible to provide different performance levels according to the needs expressed by the nearby residents.
- The invention aims to overcome at least some of the drawbacks of the known solutions for limiting the noise heard by those living alongside engineering structures, of the bridge or viaduct type, in particular viaducts having a U-shaped cross section, in particular in the form of a splayed U.
- In particular, the invention aims to provide an anti-noise installation for a viaduct that does not impact on the visual field of the nearby residents.
- The invention also aims to provide, in at least one embodiment, an anti-noise installation that can be adapted to various viaduct designs without major difficulty.
- The invention also aims to provide, in at least one embodiment of the invention, an anti-noise installation that is easy to maintain.
- The invention also aims to provide, in at least one embodiment of the invention, an installation that makes it possible to respond to various distinct performance levels.
- The invention also aims to provide, in at least one embodiment, a viaduct equipped with an anti-noise installation according to the invention.
- To do this, the invention relates to an anti-noise installation for a guided transport track having a U-shaped cross section, in particular in the form of a flared U, the two branches of which form the lateral walls of the track and the central zone of which, connecting the two branches, forms at least one runway for a guided transport vehicle, characterised in that said installation comprises a plurality of acoustic panels arranged relative to one another so as to form at least one chamber for confining a source of noise resulting from the passage of a vehicle on said runway, which chamber can be provided around said noise source while extending as far as a free end of at least one branch of the U, each acoustic panel forming at least one portion of a partition of a noise-confinement chamber.
- The invention therefore makes it possible to form at least one noise-confinement chamber arranged around the source of the noise, which results from the passage of the wheels of a vehicle over the runway, for example wheels of a train on the rails, and the free end of the lateral walls of the U-shaped viaduct. A noise-confinement chamber is a chamber that has partitions suitable for optimally insulating the space containing the sources of noise from the space downstream thereof and thus for attenuating the noise. The invention proposes confining the sources of noise resulting from the dynamic interaction of the wheels of a vehicle with the runway by using the space available between these sources and the lateral walls of the U-shaped viaduct. Since space is limited, the invention proposes using a plurality of acoustic panels and arranging them relative with one another so as to form various partitions of at least one noise-confinement chamber without these exceeding the outer dimensions of the viaduct, such that the visual impact of the installation is limited.
- The invention uses and optimises the U-shape of the viaduct by forming a noise-confinement chamber that lies entirely within the permitted space between the source of the noise and the free end of the branches of the U. In other words, each portion of the U-shaped viaduct is used to reduce the noise emissions. The invention therefore takes advantage of the specific shape of the viaduct for reducing the noise emissions by integrating various acoustic panels therein.
- Furthermore, the confinement chamber is provided around the source of the noise, extending as far as the free end of the lateral walls. In other words, the acoustic panels do not extend beyond the viaduct. In particular, no acoustic panel projects beyond the free end of the lateral walls. All the acoustic panels are therefore provided between the lateral walls of the viaduct. The visual impact of an anti-noise installation is therefore zero for the nearby residents. A viaduct that is carefully designed and that has aesthetic curves is therefore not compromised by the arrangement of an anti-noise installation according the invention, unlike the noise-reduction barriers of the prior art.
- According to the invention, the confinement chamber is formed by arranging a plurality of acoustic panels, each panel forming at least one portion of a partition of a confinement chamber. It is therefore particularly easy to adapt the shape and dimensions of the noise-confinement chambers to the dimensions of the vehicles travelling on the track by moving and/or modifying the shape and dimensions of one or more acoustic panels.
- It is also particularly easy to adapt the shape and dimensions of noise-confinement chambers to the required performance level. For example, an installation according to the invention makes it possible to adapt the sound attenuation produced to a specific requirement by modifying the shape of the confinement chamber produced by the arrangement of the acoustic panels. The performance may also be determined by the type of acoustic panels used. Furthermore, depending on the dimensions of the vehicle travelling on the track, only some of the acoustic panels of the plurality of acoustic panels may be used.
- The confinement chamber is preferably formed by the combination of the acoustic panels, the vehicle and the U-shaped viaduct. In other words, the acoustic panels are at least arranged so as to form partitions where the vehicle and the viaduct do not form walls preventing the propagation of the noise.
- Advantageously, and according to the invention, each acoustic panel is either an absorbent panel or a blocking panel. An absorbent panel is an acoustic panel comprising a material suitable for absorbing at least some of the noise that reaches it. A blocking panel is an acoustic panel formed of a material suitable for blocking the propagation of the acoustic waves that reach it.
- Advantageously, an installation according to the invention comprises at least one acoustic panel, referred to as a cap, suitable for being mounted on the free end of at least one branch of the U, in parallel with said runway, extending in the direction of the branch of the U facing the branch on which it is mounted, so as to form a top partition of a noise-confinement chamber.
- Each cap forms an upper partition of at least one noise-confinement chamber. Each cap is arranged at the end of a lateral wall of the track towards the lateral wall of the opposite track, in parallel with the runway. In other words, each cap delimits the upper part of the chamber while not extending beyond the viaduct. An anti-noise installation according to the invention and according to this variant therefore does not create a visual impact for nearby residents. Each cap forms, together with the lateral wall of the U-shaped viaduct on which it is arranged, a cavity that traps the acoustic waves emitted by the noise source, which substantially reduces the noise transmitted to those living near the viaduct when vehicles pass over the transport track. The cap may have dimensions so as to extend as close as possible to the vehicle travelling on the track in order to limit to the maximum possible extent the leakage surface formed by the space between the free end of the cap and the vehicle.
- Advantageously, an anti-noise installation according to the invention comprises at least one acoustic panel, referred to as a skirt, suitable for being carried by said vehicle perpendicularly to said runway, and at least one acoustic panel, referred to as a bottom screen, suitable for being mounted on said runway facing said skirt, so as form a lateral partition of at least one noise-confinement chamber.
- An anti-noise installation according to this variant therefore makes it possible to form, by combining a skirt carried by the vehicle and a bottom screen mounted on the runway, a lateral partition of a localised noise-confinement chamber that moves when the vehicle moves. In particular, the chamber is only formed when the train is present on the viaduct. This lateral partition is not continuous, but has a space between the skirt and the bottom screen to enable the vehicle to travel on the track. This space between the bottom screen and the skirt determines the leakage surface towards the outside of the confinement chamber to which the formed partition belongs. This surface can therefore be parameterised by adapting the dimensions of the skirt and of the bottom screen to the dimensions of the vehicles travelling on the track.
- Preferably, the installation comprises two skirts carried laterally on each side of the vehicle and a bottom screen mounted on the track facing each skirt.
- Advantageously, an anti-noise installation according to the invention comprises at least one acoustic panel, referred to as a lateral panel, suitable for being mounted in the vicinity of a lateral wall of the track, perpendicularly to the runway, so as to form a lateral partition of at least one noise-confinement chamber.
- In a variant or in combination, the installation comprises at least one acoustic panel, referred to as a lateral mat, suitable for being attached to the lateral wall of the track, forming a branch of the U, so as to form a lateral partition of at least one noise-confinement chamber.
- A lateral mat can follow the shape of the lateral wall of the U-shaped track so as to form a lateral partition of a noise-confinement chamber.
- Advantageously, an anti-noise installation comprises at least one acoustic panel, referred to as a slab, suitable for being attached to the runway so as to form a bottom partition of at least one noise-confinement chamber.
- Advantageously and according to the invention, said acoustic panels, in particular the absorbent panels, are suitable for being arranged in various distinct configurations so as to form at least one noise-confinement chamber that is compatible with the design of said guided transport track on which the installation is used.
- An installation according to this variant makes it possible to adapt the design of the confinement chambers formed by the arrangement of the acoustic panels, in particular the absorbent panels, to various types of track and to the specific constraints and requirements of each track.
- Advantageously, an installation according to the invention further comprises means for removably attaching said acoustic panels, in particular the absorbent panels, so as to allow easy installation/removal of each acoustic panel, in particular of each absorbent panel.
- According to this variant, the installation and removal of an acoustic panel on the track or on the vehicle is done by means of removable attachment means, which makes it easier to maintain an anti-noise installation according to the invention and which makes it possible to easily adapt the design of the chambers formed by the acoustic panels to the dimensions of the vehicles travelling on the track. These removable attachment means comprise, for example, means of the screw-and-nut type.
- Advantageously and according to the invention, said acoustic panels are arranged relative to one another so as to form at least two noise-confinement chambers that can be provided in series between the noise source and a free end of at least one branch of the U.
- According to this variant, the installation forms at least two noise-confinement chambers arranged in series between the noise source and the outside of the viaduct. In particular, the first confinement chamber leads into the second confinement chamber, which leads to the outside of the viaduct, at the cap. The first chamber comprises, for example, a bottom partition formed by slabs, lateral partitions formed by skirts and bottom screens, and a top partition formed by the vehicle. The second confinement chamber comprises, for example, a bottom partition formed by slabs, lateral partitions formed respectively by a skirt and a bottom screen (this partition is common with the first chamber), and by a lateral mat, and a top partition formed by a cap. The space between the skirt and bottom screen of the common partition forms a passage from the first chamber to the second chamber. The space between the free end of the cap and the vehicle forms a leakage surface of the second chamber.
- An anti-noise installation according to the invention can be used in connection with a guided transport track comprising two adjacent runways. In this case, the anti-noise installation advantageously comprises at least one acoustic panel, referred to as a central panel, suitable for being attached to the track between the two runways while extending perpendicularly to the runways so as to form a lateral partition of at least one noise-confinement chamber.
- Advantageously and according to the invention, at least one absorbent acoustic panel is formed of a material chosen from the group comprising porous concrete, timber concrete, rubber concrete, rockwool, rockwool, steel, PVC, EPDM or a combination of a plurality of these materials.
- Each of these materials offers good acoustic and/or structural performance and can be used to form one or more absorbent acoustic panels of an anti-noise installation according to the invention.
- The invention also relates to a guided transport track having a U-shaped cross section, in particular in the form of a flared U, the two branches of which form the lateral walls of the track and the central zone of which, connecting the two branches, forms a runway for a guided transport vehicle, characterised in that it comprises an anti-noise installation according to the invention.
- The invention also relates to an anti-noise installation and a track equipped with an anti-noise installation, characterised in combination by all or some of the features mentioned above or below.
- Other aims, features and advantages of the invention will become apparent from reading the following description given solely by way of non-limitative example and which refers to the accompanying figures, in which:
-
FIG. 1 is a schematic perspective view of a guided transport track according to an embodiment, equipped with an anti-noise installation according to an embodiment of the invention; -
FIG. 2 is a schematic cross-sectional view ofFIG. 1 ; -
FIG. 3 is a schematic perspective view of a guided transport track equipped with an anti-noise installation according to an embodiment of the invention; -
FIG. 4 is a schematic cross-sectional view ofFIG. 3 ; -
FIG. 5 is a schematic cross-sectional view of a guided transport track equipped with an anti-noise installation according to an embodiment of the invention, in which caps and bottom screens are shown; -
FIG. 6 is a schematic cross-sectional view of a guided transport track equipped with an anti-noise installation according to an embodiment of the invention, in which lateral mats are shown; -
FIG. 7 is a schematic cross-sectional view of a guided transport track equipped with an anti-noise installation according to an embodiment of the invention, in which a central panel is shown; -
FIG. 8 is a schematic cross-sectional view of a guided transport track equipped with an anti-noise installation according to an embodiment of the invention, in which caps, lateral panels, a central panel and bottom screens are shown; -
FIG. 9 is a schematic cross-sectional view of a guided transport track equipped with an anti-noise installation according to an embodiment of the invention, in which absorbent slabs are shown; -
FIG. 10 is a schematic cross-sectional view of a guided transport track equipped with an anti-noise installation according to an embodiment of the invention, in which lateral panels, bottom screens and a central panel are shown; -
FIG. 11 is a schematic cross-sectional view of a guided transport track equipped with an anti-noise installation according to an embodiment of the invention, in which caps, lateral panels, bottom screens and a central panel are shown. - In the figures, the scales and proportions are not strictly respected for purposes of illustration and clarity. Throughout the following detailed description given with reference to the figures, unless otherwise indicated, each element of the anti-noise installation is described as it is arranged when the installation is mounted on a guided transport track. This arrangement is in particular shown in
FIGS. 2 and 4 . - A guided transport track according to the invention intended to be equipped with an anti-noise installation according to the invention has a cross section in the shape of a U, the two branches of which form the
lateral walls forms runways transport vehicle 50. In the figures, the guided transport track is a track comprising twoadjacent runways - Throughout the remainder of the detailed description, only the anti-noise installation arranged in relation to the
runway 18 will be described precisely, it being understood that the anti-noise installation may be symmetrical and have an identical design in relation to therunway 17. - The anti-noise installation according to the invention comprises a plurality of acoustic panels arranged relative to one another so as to form at least one
chamber 20 for confining the noise resulting from the passage of a vehicle over arunway 18. Thisconfinement chamber 20 is shown schematically by a dashed line inFIG. 2 . Thechamber 20 surrounds the noise-generating zone that is formed by thewheels 51 of thevehicle 50 and therails 52 carried by therunway 18. Thischamber 20 extends in the noise-formation zone as far as the free end of at least onelateral wall 16 of the track. - According to the embodiment in the figures, the acoustic panels are all absorbent panels. This being the case, according to other embodiments, one or the other of the absorbent panels described below may be replaced by a blocking panel.
- An anti-noise installation according to the embodiment in the figures therefore comprises a plurality of absorbent panels and in particular:
-
- caps 30, 31 mounted on the free end of the
lateral walls -
lateral panels lateral wall - a plurality of
absorbent slabs 34 arranged on therunways - a
central panel 35 attached to the track between the tworunways - a
skirt vehicle 50 perpendicularly to therunway 17; - bottom screens 37 a, 37 b mounted on the
runway 17 facing theskirts -
lateral mats lateral walls
- caps 30, 31 mounted on the free end of the
- The invention makes it possible to form one or more noise-confinement chambers by using at least some of these various absorbent panels and arranging said panels relative to one another.
- To do this, the invention aims to form at least one lateral partition for preventing noise from propagating laterally towards the end of the viaduct, and a top partition for preventing the propagation of noise outside the viaduct.
-
FIGS. 1 and 2 show a design of an anti-noise installation according to the invention, in which only acentral panel 35,absorbent slabs 34, caps 30, 31 andmats confinement chamber 20. -
FIGS. 3 and 4 show another design in which skirts 36 a, 36 b, bottom screens 37 a, 37 b,lateral panels central panel 35 are used to form a first noise-confinement chamber 22 and asecond chamber 21 into which thechamber 22 leads. This design affords a substantial reduction in the noise by arranging two noise-confinement chambers - Hereinafter, various embodiments of each absorbent panel will be described in relation to
FIGS. 5 to 11 . - In
FIG. 5 , only caps 30, 31 andbottom screens bottom part 60 oriented towards therunway 17 so as to increase the absorbent surface area. According to other embodiments, the caps may be formed of extruded EPDM, or from folded sheet metal having a thickness of, for example, 0.8 mm. - Whatever the material used, each cap has
holes 61 extending in parallel with the runway and suitable for receiving attachment means of the screw-and-nut type. According to an advantageous embodiment, each cap has a top surface having a slight slope, for example of approximately 3%, towards the runway, for allowing rainwater to run off. - The caps extend over a distance of, for example, 10 to 20 cm from the edge of the lateral wall on which they are mounted and extend along the track over a distance of, for example, 6 m.
-
FIG. 5 also shows bottom screens 37 a, 37 b intended to form, together with theskirts FIG. 5 , at least one lateral wall of a noise-confinement chamber. The bottom screens 37 a, 37 b of the embodiment inFIG. 5 have a structure identical to that of thecaps FIG. 4 . - In
FIG. 6 , only onelateral mat 39 is shown in detail for purposes of illustration and clarity. It is, for example, formed of timber concrete or rubber concrete and is applied directly against thelateral wall 16 of the viaduct. According to the embodiment inFIG. 6 , themat 39 also carries arack 64 pegged directly in the concrete of the viaduct. Thisrack 64 is intended to carry electric cables used for the functioning of the guided transport and/or for the viaduct. In this case, themat 39 may be held against the lateral wall by means of the attachment means of therack 64. According to another embodiment, the lateral mat is directly attached to the lateral wall by attachment means of the nails-for-insulation type. Thelateral mat 39 may be crenelated in order to maximise the absorbent surface area. - In
FIG. 7 , only onecentral panel 35 is shown in detail for purposes of illustration and clarity. It is, for example, formed by two panels made from porous concrete or timber concrete. It may further comprise an H-shaped steel profile that covers the edges of the two panels and thus mechanically holds these panels in place. The panel further comprises two plates welded to each longitudinal end of the central panel so as to allow attachment of the panel to the runway. - In
FIG. 8 , in addition to acentral panel 35, alateral panel 33, abottom screen 37 a and acap 31 according to another embodiment of the invention are shown. Thelateral panel 33 is a timber concrete panel surrounded by a protective metal sheet. Thecap 31 is a cap made from timber concrete surrounded by a protective metal sheet. The bottom screen is made from timber concrete surrounded by a protective metal sheet. The protective metal sheet is, for example, a sheet 1.5 mm thick and the timber concrete has a thickness of, for example, 133 mm. Naturally, according to other embodiments, the thicknesses and materials may be chosen differently without calling into question the subject matter of the invention. - In
FIG. 9 , onlyabsorbent slabs 34 are shown. These slabs form the bottom partitions of the confinement chambers. InFIG. 8 , three types of slab are shown: anabsorbent slab 34 a made from rubber concrete or porous concrete, afirst slab 34 b in two parts for following the drainage slope of the track, and asecond slab 34 c in two parts for following the drainage slope of the track in the central zone of the track. - In
FIG. 10 , thecentral panel 35, thelateral panels - In
FIG. 11 , thecentral panel 35, thelateral panels caps - The invention is not limited solely to the embodiments described. In particular, other types of material may be used to form the acoustic panels, in particular the absorbent panels.
Claims (13)
1. An anti-noise installation for a guided transport track having a U-shaped cross section forming a U, two branches of the U of which form lateral walls of the track and a central zone, connects the two branches and forms at least one runway for a guided transport vehicle the installation comprising:
plurality of acoustic panels arranged relative to one another so as to form at least one chamber for confining a source of noise resulting from passage of a vehicle on at least one runway, said chamber provided around said noise source while extending as far as a free end of at least one of the branches of the U, each acoustic panel forming at least one portion of a partition of a noise-confinement chamber.
2. The anti-noise installation according to claim 1 , wherein at least one acoustic panel is a cap mounted on free end of at least one of the branches of the U, in parallel with each runway, extending in the direction of the branch of the U facing the branch on which it is mounted, so as to form a top partition of a noise-confinement chamber.
3. The anti-noise installation according to claim 1 , wherein at least one acoustic panel is a skirt carried by said vehicle perpendicularly to each runway, and wherein at least one acoustic panel is a bottom screen mounted on a runway facing said skirt, so as form a lateral partitions of at least one noise confinement chamber.
4. The anti-noise installation according to claim 1 , wherein at least one acoustic panel is a lateral panel mounted in a vicinity of a lateral wall of the track, perpendicularly to each runway, so as to form a lateral partition of at least one noise-confinement chamber.
5. The anti-noise installation according to claim 1 , wherein at least one acoustic panel is a lateral mat attached to the lateral wall of the track, forming a U-shaped branch, so as to form a lateral partition of at least one noise-confinement chamber.
6. The anti-noise installation according to claim 1 , wherein at least one acoustic panel is an absorbent slab (34 a, 34 b, 34 c), suitable for being attached to a runway (17, 18) so as to form a bottom partition of at least one noise-confinement chamber (20).
7. The anti-noise installation according to claim 1 , wherein said acoustic panels are arranged to form at least one noise-confinement chamber compatible with said guided transport track on which the installation is mounted.
8. The anti-noise installation according to claim 1 , wherein said acoustic panels are removably attached to one another.
9. The anti-noise installation according to claim 2 , wherein said acoustic panels are arranged relative to one another so as to form at least two noise-confinement chambers provided in series between the noise source and a free end of at least one branch of the U.
10. The anti-noise installation according to claim 1 wherein comprises at least one acoustic panel comprises a central panel attached to the track between two runways of the guided transport track while extending perpendicularly to the two runways so as to form a lateral partition of at least one noise-confinement chamber.
11. The anti-noise installation according to claim 1 , wherein each acoustic panel is either an absorbent panel or a blocking panel.
12. The anti-noise installation according to claim 11 , wherein at least one absorbent panel is formed of a material selected from the group consisting of porous concrete, timber concrete, rubber concrete, rockwool, glass wool, steel, PVC, and EPDM.
13. A guided transport track having a cross section in the form of a splayed U, two branches of which form lateral walls of the track and a central zone of which, connecting the two branches, forms a runway for a guided transport vehicle, wherein the track comprises an anti-noise installation comprising:
a plurality of acoustic panels arranged relative to one another so as to form at least one chamber for confining a source of noise resulting from the passage of a vehicle on at least one runway, said chamber provided around said noise source while extending as far as a free end of at least one of the branches of the U, each acoustic panel forming at least one portion of a partition of a noise-confinement chamber.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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FR1458462 | 2014-09-10 | ||
FR1458462A FR3025533B1 (en) | 2014-09-10 | 2014-09-10 | ANTI-NOISE INSTALLATION FOR TRANSPORT PATH GUIDE AND TRANSPORT PATH GUIDE EQUIPPED WITH SUCH A INSTALLATION |
PCT/FR2015/052240 WO2016038270A1 (en) | 2014-09-10 | 2015-08-20 | Anti-noise facility for tracked transport road and tracked transport road provided with such a facility |
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US20170275834A1 true US20170275834A1 (en) | 2017-09-28 |
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US15/509,193 Abandoned US20170275834A1 (en) | 2014-09-10 | 2015-08-20 | Anti-noise facility for tracked transport road and tracked transport road provided with such a facility |
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US (1) | US20170275834A1 (en) |
JP (1) | JP2017531110A (en) |
KR (1) | KR20170049507A (en) |
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AU (1) | AU2015314080A1 (en) |
CA (1) | CA2959108A1 (en) |
FR (1) | FR3025533B1 (en) |
GB (1) | GB2544432A (en) |
HK (1) | HK1232267A1 (en) |
PH (1) | PH12017500390A1 (en) |
SE (1) | SE1750197A1 (en) |
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CN108824100B (en) * | 2018-05-29 | 2019-07-05 | 同济大学 | A kind of inertial rotation formula vertical vibration isolation device |
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AT398095B (en) * | 1992-03-19 | 1994-09-26 | Schreiner Franz Dr Ing | Apparatus for damping the sound from rail vehicles |
DE19601783A1 (en) * | 1996-01-19 | 1997-07-24 | Rolf Hatlapa | Sound absorbent walls for rail vehicle |
CN201236321Y (en) * | 2008-07-18 | 2009-05-13 | 北京城建设计研究总院有限责任公司 | Sound insulation regulating mass for U shaped beam of overhead viaduct of urban rail traffic |
CN102286915B (en) * | 2011-08-30 | 2013-06-19 | 北京城建设计研究总院有限责任公司 | Urban railway traffic continuous basin type beam |
DE202011052057U1 (en) * | 2011-11-22 | 2011-12-30 | Art Asamer Rubber Technology Gmbh | Noise protection device |
JP2015501893A (en) * | 2011-11-22 | 2015-01-19 | アーエルテー アザマー ルバー テクノロジー ゲゼルシャフト ミット ベシュレンクテル ハフツング | Noise prevention device |
-
2014
- 2014-09-10 FR FR1458462A patent/FR3025533B1/en active Active
-
2015
- 2015-08-20 KR KR1020177005463A patent/KR20170049507A/en unknown
- 2015-08-20 WO PCT/FR2015/052240 patent/WO2016038270A1/en active Application Filing
- 2015-08-20 AU AU2015314080A patent/AU2015314080A1/en not_active Abandoned
- 2015-08-20 GB GB1702894.5A patent/GB2544432A/en not_active Withdrawn
- 2015-08-20 CA CA2959108A patent/CA2959108A1/en not_active Abandoned
- 2015-08-20 US US15/509,193 patent/US20170275834A1/en not_active Abandoned
- 2015-08-20 CN CN201580047856.7A patent/CN106795697A/en active Pending
- 2015-08-20 JP JP2017512931A patent/JP2017531110A/en active Pending
- 2015-08-20 SE SE1750197A patent/SE1750197A1/en not_active Application Discontinuation
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2017
- 2017-03-02 PH PH12017500390A patent/PH12017500390A1/en unknown
- 2017-06-13 HK HK17105831.3A patent/HK1232267A1/en unknown
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WO2016038270A1 (en) | 2016-03-17 |
FR3025533B1 (en) | 2016-11-18 |
KR20170049507A (en) | 2017-05-10 |
GB201702894D0 (en) | 2017-04-12 |
PH12017500390A1 (en) | 2017-07-17 |
SE1750197A1 (en) | 2017-02-23 |
GB2544432A (en) | 2017-05-17 |
JP2017531110A (en) | 2017-10-19 |
CN106795697A (en) | 2017-05-31 |
CA2959108A1 (en) | 2016-03-17 |
AU2015314080A1 (en) | 2017-03-16 |
HK1232267A1 (en) | 2018-01-05 |
FR3025533A1 (en) | 2016-03-11 |
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