EP2014833A2 - Schalldichte und schalldämpfende Lärmschutzvorrichtung - Google Patents

Schalldichte und schalldämpfende Lärmschutzvorrichtung Download PDF

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Publication number
EP2014833A2
EP2014833A2 EP08003554A EP08003554A EP2014833A2 EP 2014833 A2 EP2014833 A2 EP 2014833A2 EP 08003554 A EP08003554 A EP 08003554A EP 08003554 A EP08003554 A EP 08003554A EP 2014833 A2 EP2014833 A2 EP 2014833A2
Authority
EP
European Patent Office
Prior art keywords
module
barrier
sound
panel
panels
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08003554A
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English (en)
French (fr)
Other versions
EP2014833A3 (de
Inventor
Giampaolo Tizzoni
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
URBANTECH Srl
Original Assignee
Ceis Costruzioni Edili Stradali SpA
URBANTECH Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ceis Costruzioni Edili Stradali SpA, URBANTECH Srl filed Critical Ceis Costruzioni Edili Stradali SpA
Publication of EP2014833A2 publication Critical patent/EP2014833A2/de
Publication of EP2014833A3 publication Critical patent/EP2014833A3/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
    • E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
    • E01F8/0011—Plank-like elements
    • 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
    • E01F8/0023—Details, e.g. foundations
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
    • E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
    • E01F8/0029—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with porous surfaces, e.g. concrete with porous fillers

Definitions

  • the present ivention regards the protective barriers' technical field. In particular it refers to the technical field of the sound-resistant and sound-absorbent barriers.
  • noise barriers typically “sound-absorbent” and others typically “sound-resistant”.
  • the "sound-absorbent" feature of a barrier represents the quantity or the percentage of the sound absorbed from the barrier respect to the quantity of the sound reflected toward the source.
  • the “sound-absorbent” is measured with a sound transmitter and receiver placed on the same side of the barrier.
  • the feature of "sound-absorbent" represents the amount of sound that does not pass to the opposite part of the barrier respect to the sound transmitter.
  • the sound transmitter and the receiver will be positioned in the two parts that are opposite respect to the barrier.
  • protections constituted by panel systems that are sustained by supporting elements.
  • the panels are put side by side to each other and supported by vertical structure that remain on sight. Beyond the typical features of sound-absorption and sound-barrier of the material used, these structures do no allow an efficient damping of the noise since there are points of discontinuity caused by the vertical post at sight.
  • EP1172484 is, for example, described a particular sound barrier according to the features mentioned above.
  • a supporting base 2 that supports the panel systems 10 which are inserted inside frames fitted to the supporting base 2.
  • noise-control structure does not result to be homogeneous and provided with continuity, but is interrupted by the vertical supporting and retaining elements. Naturally, this determinates a deep inefficiency of this sound-control devices, since the interruption of structural continuity makes fall the sound-control capacity in correspondent to the interruption of the panel system.
  • these particular panel systems are sound-absorbent but not much sound-barrier (28/32 db). They are, indeed, generally constituted by metal, plastic, transparent plastic or similar material, and thus hardly machinable and expensive. Therefore the realization of eventual grooving or other engravings in order to rise the sound-absorption of the panel, is impossible to make in loco and must be planned at the moment of the planning. In this way eventual changes to the same panel are impossible and consequently the modification of the entire sound-control structure is required. Moreover, the eventual reinforcements to be inserted inside the sound-absorbent panel system, as for example nets or bars, result to be very expensive.
  • the sound-controlling panel system shall be, indeed, joined to the pre-existent structure in a firm and safe way, to be able to resist to the wind, weather conditions, and also to shocks. This forces the same panel system to have a height limited and proportional to the height of the pre-existent guardrail or fence that works as a support. We are therefore forced to limit the dimensions independently from the real sound-controlling necessities. This way, for example, the noises released from aloft sources will not be efficiently screened.
  • the aim of the present invention is to give a noise filtering barrier that has both excellent sound-absorption and sound-isolation features.
  • the aim of the present invention is to give a sound-filtering barrier that is light, allowing this way installations that do not require hefty and expensive fundaments.
  • the present sound filtering barrier able to delimitate a general area or a transition course, that comprises at least a panel with a predetermined height, placed along said area or transition course, and supporting elements, characterized by the fact that in correspondence to at least one side face (2') of the panel (2) is obtained a slot (4') with a predetermined depth inside which it is placed at least a vertical supporting post (4) firmly joined to the slot (4') and such to define a module (1), for which said module (1) result to be movable for an installation in loco.
  • the module (1) is able to be joined to at least another module (1) placed on its side in correspondence to the respective lateral faces (2') defining a barrier (101) with a corresponding length, the respective lateral faces (2') of the panels (2) constituting at least said two modules (1) placed side by side to each other result to be adjacent covering up the at sight supporting elements.
  • the vertical supporting post (4) firmly joined to the slot (4') of the panel (2) is connected firmly to a second vertical supporting post rigidly joined inside a second slot relatively to a second panel and defining a second module (1) place side by side to said first module (1) in a way that said lateral sides of said panels result to be in contact to each other along their entire length.
  • said predetermined depth of said slot (4') is such that each respective vertical supporting post (4) is totally contained inside of it
  • said module (1) can be rigidly joined to a second module (1) placed side by side to said first module (1) in a way that said lateral faces of the respective panels result to be in contact to each other along their entire height realizing a continuous sound-controlling barrier (101)without vertical post at sight.
  • each module has, therefore, two posts rigidly joined to it and totally hided inside the slots 4.
  • each module (1) comprises a plurality of panels (2) overlapped to each other in a way to change the overall height of each module (1).
  • each module (1) constituting said barrier (101) is supplied with two vertical posts, which are immerse into a concrete casting 10 adjusted according to a groove-and-tongue joint and such to allow the approach of the modules so that the respective lateral faces are in contact to each other for their entire height.
  • each module 1 is ready for the installation in loco simply by placing it on the apposite curb.
  • the panel (2) overlapped and firmly joined to the respective two vertical supporting posts (4) inside the respective slots determinates a modular type structure that is independent and self-supporting.
  • the panels (2) are made in autoclaved aerated concrete, also known as "Porenbeton”.
  • each panel (2) constituting said module (1) comprises at least a hole (17'), which passes through its entire height, within which are inserted appropriate compacting means.
  • all the panels (2) constituting a module (1) are supplied with two holes (17') placed with a predetermined distance between them, each of the two is coaxial to the correspondent two holes (17') of the panel (2) placed above and/or down and in a way such to be able to insert compacting means through the entire height of the module (1).
  • the compacting means comprise at least a tension rod (5), with its respective plate in base contrast (12)inserted inside the hole (17') of the overlapped panels, and drafting means.
  • the drafting means comprise, on the other hand, an upper plate 17 for a pre-tensioning of half screwed bolts 18 such that the module 1 made by said pluralities of panels (2) and by said two vertical posts (4)is pre-assemble at site and entirely transportable for the laying.
  • the advantage of the Porenbeton is its workability. This makes it possible to realize on each panel that define a module a plurality of vertical holes (60) along their entire height.
  • the slot (4') has a height coinciding with at least a portion of said height of said panel (2).
  • the slot (4') has a height coinciding with said height of said panel (2).
  • At least one vertical supporting post relative to a module (1) connects firmly to a second module (1) abreast to it, inserting inside the respective second slot (4') of said second module a groove-and-tongue joint so that said respective lateral faces of said panels constituting the module will result to be in contact to each other along their entire height.
  • At least a slot of a module is bereft of its respective supporting post (4) and such that the exceeding portion of the vertical supporting post (4) of the first module (1) is incoming into said second lateral slot of said second module in a way that the respective lateral faces of said module (1) result to be in contact to each other along their entire height.
  • the barrier (101) is made by two module (1) placed side by side and alternatively provided with and bereft of the vertical posts (4).
  • connection of the vertical supporting post of the panel to the second slot of the second panel is made through connection means such as screws, bolts and similar.
  • the stable joint of the vertical supporting post of the panel to the second vertical supporting post of the second panel is realized by means of metallic plates (25) or similar fixed on the respective vertical supporting posts through screws, bolts and similar.
  • the space volume defined by the slots (4') is further on filled up with a concrete casting 10 once the module (1) is assembled, said fluid defines a groove-and-tongue joint to facilitate the connection between a module and the other.
  • the solidifier fluid is concrete, cement or similar.
  • a barrier 101 composed by the assemblage of modules 1 pre-assembled in plant and placed close to each other in adherence with the groove-and-tongue joint. In this way it is obtained a barrier with any lenght depending on the needs.
  • the height of the barrier, and therefore of each module 1, is obtained by overlapping each panel 2 constituting each module 1.
  • the barrier has a variable expansion, both in length and in height, according to the noise protection needs of the track and of the territory.
  • the assemblage of the barrier happens on the installed vertical ledge, adequately dimensioned depending on the geometric features of the barrier, of the installation place and of the soil.
  • the vertical ledge follows the altimetry of the road route, so that the modules 1 of the barrier always lean on a horizontal place compensating the variations of the elevation with height variance from each module.
  • the single module in its unit and the single important component that constitute it.
  • the supporting structure of the module realized with two vertical posts 4 that support statically the entire system under the wind, seismic, and weight action.
  • the profiles of the posts could be of any kind, as for example of HEA or similar.
  • Each single panel 2 overlapped to obtain the desired height of the module, is joined to the two vertical posts 4.
  • each panel in correspondence to its two lateral faces 2', have a slot 4' within which it is inserted and placed the vertical posts 4.
  • Joining means will be then used to firmly join the two vertical posts 4 inside the respective slots 4'.
  • it could be used L shaped plates 15 screwed respectively on the post and on the upper surface of each single panel.
  • the slots 4' have such a depth to receive inside , according to the preferred configuration of the invention, the entire vertical posts 4 which, therefore, "vanish” inside of them.
  • two male connector plates 25 are welded along the head of the post 4 of one of the two modules to be joined, while in the other post relative to the second module placed on the side is left a female slot in a way to create a groove-and-tongue joint.
  • a sole connector plate 25 is welded along the vertical axis of the post 4.
  • the other module it is left a female slot to create a groove-and-tongue joint.
  • This solution is preferable in a curve laying situation of the barrier as it follows better the profile.
  • all the module that constitute the barrier 101 result to be ready for the installation or in loco with a groove-and-tongue joint that helps the coupling. It is clear how, also in this case, it is efficient the approach of the modules, which will perfectly match without leaving any visible supporting post that interrup the continuity of the barrier.
  • the casting 10 it can be used thin aerated concrete Rck 250 (sand and concrete), with fluidifying and antishrinkage additive.
  • Each single panel 2 (look still at figure 2 ) is made in a sole homogeneous material and in particular in autoclavable aerated concrete called "Porenbenton". This material is typically sound-isolating and result to be lighter respect to the traditional concrete used, reducing, consequently, the costs of the realization of the fondation.
  • this material is not stiff, therefore it absorbs eventual striking energies and has a very low specific weight that could correspond to 500 Kg/m 3 ro 600 Kg/m 3 or 700 Kg/m 3 , depending on the request, and consequently it does not constitute any kind of danger in case of breakdown of some pieces during an accident.
  • each module 1 with only the vertical holes 60 and only after, in base of the future needs, realizeon the barrier the horizontal holes 50 in order to imrpove the sound-absorption features.
  • a noise reducer opportunately with a trapezoidal shape (loof at figure 3 ).
  • a trapezoidal panel 103 is used with the face inclined toward the noise source, to improve the sound-barrier features, because of sound rays refraction.
  • each single panel has two slots 4' in correspondence to its two lateral faces 2' in a way to be able to insert and join the respective posts (look at figure 2 and 11 ). Therefore, in order to "stack" one on the other each single panel, and obtain a module 1, it is realized a system of prestressed type through opportune compacting means.
  • the compacting means comprise two stainless tie bars that are threaded on the top 5 and have a plate in base contrast (12).
  • the single panels 2 are inserted singularly one on top of the other on the tie bars while the plate 12 is in contrast.
  • Opportune tie bars means will allow then the finishing of the panel's packing.
  • some bolts 18 will be screwed to the top thread of the two tie bar closing the panels through plate 17.
  • each panel has two through holes 17' within which are inserted the tie bars 5 for their entire length and pack the pile.
  • the upper and lower supporting base of the panel 2 can be worked according to the groove-and-tongue profile.
  • the particular toothed profile 104 and 105 that allows the coupling of the two panels one on top of the other.
  • Further components that can help the junction between the panels can be easily used, as for example mortar or similar.
  • the post will therefore have the same height of the finished sound-resistant barrier and will therefioe result to be joint to the plate 13 through plates 11.
  • the central plate 14 of the lateral plates 13 and of the central plates 12 it is possible to join the lateral plates 11 with a U profile or with a sole plate or with a HEA 160 profile.
  • both to the lateral plate 11 and to the post 4 two stiffening gusset plate 6, one internally and the other one externally (look at figure 7 and also figure 2 ). These have a double function; the first one is to make the joint between the post and the plate more stable, while the second one is to create some slots for the fitting tie bars in the foundation 102, visible in figure 5 .
  • the supporting structure When the supporting structure is assembled, it is possible to insert the panels 2, but only after the two open lateral slots have been realized on them (look at figure 6 or figure 7 ). Only to illustrate but not limitation the present invention, the slots could have 190x190x62.5 mm dimensions. Moreover are realized also the two through holes 17' that will receive the two tie bars 5.
  • the panels will then have to be lifted and piled up one on top of the other in a manner to allow the holes 17' to be inserted inside the two tie bars 5, and clamp the whole with the drafting means for the closure, as screws, bolts and plates.
  • the panels can further on be stuck by using mortar.
  • the panels 2 look at figure 4
  • the panels 2 can be worked in correspondence of their upper and lower surfaces according to toothed pattern 104 and 105.
  • each panel that constitutes the module with the vertical posts 4 placed inside the opened lateral sites 4' are used the plates 15 (look at figure 5 ), that are mechanically fitted to the vertical posts 4 through bolts and to the panels through tubola nails for autoclaved aerated concrete.
  • finishing casting that can be aerated concrete or fluid rck concrete (sand and cement), in the commisure between panel 2 and the tie bar 5 in correspondence to the hole 17'.
  • the panels 2 can be realized on project in different dimensions, with height that differs from 60 to 75 cm, length that differs from 50 to 600 cm, and depth from 24 to 50 cm, in a way to make noise-barriers for any kind of profile with any kind of sweep and slope.
  • the elements, maintaning the same length and depth variations, can have a height tha varies from 120 cm to 500/600 cm.
  • the panels can have, similarly to what has been already described in figure 8 , 9 , 10 , and 20 , groove-and-tongue joints in correspondence to the lateral faces 2' of each panel, in a way to eliminate the points of discontinuity of the noise barrier and, in the same time, allow during the assemply phase, an easy and fast alignment of the modules.
  • the barrier has the supporting structure incorporated inside the same panels ensures, moreover, a better aesthetic impact. This allows to install the barrier not only in places with high traffic density, but also to screen the noise sources, as industries located in urban units, allowing to build some decorative architectural elements. Thus, by combining the aesthetic value of the product with the possibility to install a barrier with a reduced height, allow to use it indifferently as a wall enclosure too.
  • a monobloc barrier is found, as represented in figure 2 , that comprises a number of panels 2, reiforced by double net in autoclaved aerated concrete, which can vary from a minimum of two to a maximum of six depending on the desired height.
  • the panels are overlapped one on the other, through the groove-and-tongue profile of figure 4 , and glued one on the other, in a way to create a firm and continueos barrier without discontinuities between the panels.
  • the last panel will be a trapezoidal one reiforced by double net in autoclaved aerated concretem which will be assebled in a way to have the surface raking toward the noise souce.
  • This panel can have a depth that varies from 35 cm in the lower part to 50 or 60 or 70 cm in the upper part.
  • the panels are supported by a supporting structure in heat galvanized stainless that comprises two posts 4 and a supporting base to wich they are welded on.
  • the posts are dimensioned to resist to the wind, or to eventual earthquakes.
  • it is made a finishing concrete casting 10, with tapping to obtain the groove-and-tail profile. This casting will optimize the coupling between the modules and, moreover, it will allow to fill up the empty spaces between the structure and the panels, improving further on the sound-absorbent feature of the barrier.
  • Each module 1 is then placed side by side to each other, with the joints described in figures 8 , 9 , 10 , and 20 , obtaining this way the requested barrier.
  • variable heights with modules that comprise panels with different heights and dimensions it is possible to use buil-up barriers made by the overlapping of two monobloc barriers that are then joined with a particular joint.
  • FIG 12 it is shown a basic module of a built-up barrier constituted by a monobloc element 203 with height that varies from 250 to 375 cm, while in the upper part there will be a monobloc barrier 204 with height that can vary from 125 to 375 cm depending on the final requested height. Also for a built-up barrier it is possible to insert, in order to improve the sound-controlling features, a trapezoidal panel raking towards the noise source and with a thickness that varies from 35 cm in the lower part to 50 or 60 or 70 cm in the upper part.
  • the monobloc module with height from 250 cm to 375 cm inserted in the lower part of the built-up barrier is composed by a number of panels that varies from 4 to 6.
  • the upper part of the built-up continuous barrier can be made by two, three or four panels reiforced with double net in autoclaved aerated concrete 2 height 62.5 cm, overlapped on each other, through the groove-and-tongue profile and glued. If the trapezoidal noise reducer 3 is inserted, the last panel will be a trapezoidal one reiforced by double net in autoclaved aerated concretem which will be assebled in a way to have the surface raking toward the noise souce.
  • the assemblig phases are identical to the ones already described for a monobloc barrier and the indicated dimensions of the panels are not resticting. Any other dimension could be used without moving apart from the present inventive concept.
  • the joining of the vertical posts 4 happens through the joint, by means of screw nuts, bolts with other perforated plates 21 joined to them.
  • the fitting happens through screw nuts and bolts in correspondence to the same contact plates 21 on which the vertical posts 4 are welded.
  • the difference respect to the preceding method is that in this case the bolts are placed inside the profile of the section bar and the access to the flange happens from an opening on the head of the panel.
  • the coupling happens through a bayonet system, for which on top of the module that creates the base of the built-up barrier, an entire HEA 100 profile, which works as a support, is welded.
  • the laying of the modules happens on the vertical ledge previously realized, with horizontal extrados plane, and with a minimum width that equals to the ones of the panels 2 placed above.
  • the whole will have to be dimensioned according to the location, soil typology and to the height of the sound-barrier. In case of slope traits, the difference in height shall be overcomed by realizing steps with appropriate length.
  • the laying of the barrier is dry and the modules 1 are mechanically fitted by means of tie bars drowned in the foundation casting in correspondence to the vertical posts 4.
  • each module 1 is directly fitted and is independent from the other modules found on the vertical ledge, morover each module is statically independent from the others, this allows that each module could be removed anytime without demolishing the others.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Fluid-Damping Devices (AREA)
  • Road Signs Or Road Markings (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
EP08003554A 2007-07-11 2008-02-27 Schalldichte und schalldämpfende Lärmschutzvorrichtung Withdrawn EP2014833A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITPI20070080 ITPI20070080A1 (it) 2007-07-11 2007-07-11 Barriera antirumore con struttura portante verticale non a vista

Publications (2)

Publication Number Publication Date
EP2014833A2 true EP2014833A2 (de) 2009-01-14
EP2014833A3 EP2014833A3 (de) 2012-01-25

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EP08003554A Withdrawn EP2014833A3 (de) 2007-07-11 2008-02-27 Schalldichte und schalldämpfende Lärmschutzvorrichtung

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EP (1) EP2014833A3 (de)
IT (1) ITPI20070080A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111028819A (zh) * 2019-12-10 2020-04-17 扬州然创新材料科技有限公司 一种隔音效果好的吸音泡棉
CN112681167A (zh) * 2020-12-22 2021-04-20 李艳丽 一种公路用防噪隔音带
CN114277702A (zh) * 2021-12-09 2022-04-05 广州市泰宇科技发展有限公司 一种景观声屏障智能监控方法
CN114411582A (zh) * 2021-12-27 2022-04-29 广东中博交通环保设备有限公司 一种全孔型声屏障
CN115976994A (zh) * 2022-12-26 2023-04-18 杭州科运环境技术有限公司 一种降噪屏障及其安装方法
CN116837754A (zh) * 2023-07-31 2023-10-03 中海环境科技(上海）股份有限公司 一种采用榫卯固定的金属声屏障结构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113846581B (zh) * 2021-09-28 2022-08-16 江苏一环集团有限公司 一种市政工程用降噪系统及其使用方法
CN115323949B (zh) * 2022-08-25 2024-04-23 中国建筑西南设计研究院有限公司 一种装配式声屏障系统

Citations (2)

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EP1172484A2 (de) 2000-07-12 2002-01-16 Haitsma Beton B.V. Leitplankenelement mit Schalldämmwand
WO2005071166A1 (en) 2004-01-21 2005-08-04 Peter Meyes Method and device for suppressing traffic noise

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US5272284A (en) * 1991-07-10 1993-12-21 Carsonite International Corp. Sound barrier
DE9113416U1 (de) * 1991-10-29 1991-12-12 Zahn, Walter, Dipl.-Ing., 6920 Sinsheim Lärmschutzwand
US5368416A (en) * 1993-09-23 1994-11-29 Cataldo;; Michael Building component for a noise barrier retaining wall
NO986000L (no) * 1998-12-18 2000-06-19 Varmesystemer As Festesystem for ikke-konstruktive vegger omfattende sjikt av en blanding av et oppskummet polymermateriale og sement

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
EP1172484A2 (de) 2000-07-12 2002-01-16 Haitsma Beton B.V. Leitplankenelement mit Schalldämmwand
WO2005071166A1 (en) 2004-01-21 2005-08-04 Peter Meyes Method and device for suppressing traffic noise

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111028819A (zh) * 2019-12-10 2020-04-17 扬州然创新材料科技有限公司 一种隔音效果好的吸音泡棉
CN112681167A (zh) * 2020-12-22 2021-04-20 李艳丽 一种公路用防噪隔音带
CN114277702A (zh) * 2021-12-09 2022-04-05 广州市泰宇科技发展有限公司 一种景观声屏障智能监控方法
CN114411582A (zh) * 2021-12-27 2022-04-29 广东中博交通环保设备有限公司 一种全孔型声屏障
CN115976994A (zh) * 2022-12-26 2023-04-18 杭州科运环境技术有限公司 一种降噪屏障及其安装方法
CN116837754A (zh) * 2023-07-31 2023-10-03 中海环境科技(上海）股份有限公司 一种采用榫卯固定的金属声屏障结构

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EP2014833A3 (de) 2012-01-25
ITPI20070080A1 (it) 2009-01-12

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