EP0771907A1 - Corps d'absorption pour la réduction de bruit aérien - Google Patents

Corps d'absorption pour la réduction de bruit aérien Download PDF

Info

Publication number
EP0771907A1
EP0771907A1 EP95117408A EP95117408A EP0771907A1 EP 0771907 A1 EP0771907 A1 EP 0771907A1 EP 95117408 A EP95117408 A EP 95117408A EP 95117408 A EP95117408 A EP 95117408A EP 0771907 A1 EP0771907 A1 EP 0771907A1
Authority
EP
European Patent Office
Prior art keywords
absorbent body
absorption
wood
tracks
absorbent
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Withdrawn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
EP95117408A
Other languages
German (de)
English (en)
Inventor
Jürgen Dr. Wolf
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.)
Vossloh Werke GmbH
Original Assignee
Vossloh Werke GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vossloh Werke GmbH filed Critical Vossloh Werke GmbH
Priority to EP95117408A priority Critical patent/EP0771907A1/fr
Publication of EP0771907A1 publication Critical patent/EP0771907A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • E01B2204/00—Characteristics of the track and its foundations
    • E01B2204/11—Embedded tracks, using prefab elements or injecting or pouring a curable material

Definitions

  • the invention relates to an absorption body for reducing airborne noise, which can be positioned between and / or on the tracks of a track body.
  • Absorbent bodies of this type are used in particular in the vicinity of residential areas in order to dampen the running noise of a train transmitted by the tracks.
  • An absorption body of the type mentioned above is known from German utility model DE-GM 94 17 848.
  • the known absorber is intended for sound insulation in a so-called "slab track", in which the tracks are fastened via sleepers made of prestressed concrete to a floor slab also made of concrete.
  • the absorption body itself consists, for example, of adhesive concrete, which is characterized by a high air pore content. This high air pore content not only means that the airborne sound generated between the tracks is absorbed, but at the same time it is ensured that water standing on the surface of the absorption body is drained away within a short time. In this way, the susceptibility of the known absorption body to frost damage is reduced.
  • the object of the invention is to improve an absorption body of the type mentioned above with regard to its sound-reducing effect with unchanged high life expectancy.
  • the absorption body is made of wood concrete.
  • the wood-concrete used according to the invention for the production of the absorption bodies is a light-weight concrete, in which pretreated wood chips are bound with hydraulic binders.
  • the wood chips are obtained from softwoods, which are optimally shredded to achieve a high degree of sound absorption.
  • the absorption bodies according to the invention are distinguished by a high degree of sound absorption due to their multi-porosity. Precipitation, with which the absorption bodies are wetted, is quickly discharged to the substructure of the track body without being absorbed by them. On the one hand, this rapid drainage of the surface water ensures that the absorption bodies are not damaged by freezing water. On the other hand, when the surface water is drained off, residues are formed which have formed on the surface of the absorption bodies. Another advantage of the rapid removal of moisture is that the fastening elements of the track system which are adjacent to absorption bodies are not exposed to the risk of corrosion.
  • the absorption bodies according to the invention have a high Dimensional stability and tread resistance.
  • the manufacturing material contains no critical components, they can be easily recycled. It is thus possible to shred absorbent bodies that are no longer usable and to use the shredded material to produce new absorbent bodies.
  • wood chips as an essential aggregate material in the manufacture of the absorbent body in that it does not contain any hard aggregates which could otherwise detach from the body and damage a train rolling over the tracks.
  • Optimal material and sound damping properties of the absorption bodies according to the invention are achieved if the proportion of wood chips is at least 65% of the total volume of the additives added to the wood concrete.
  • the length of the wood chips should be at least 4 cm, their thickness at least 1 mm and their width at least 2 mm.
  • the wood chips should be at most 12 cm long, 3 mm thick and 4 mm wide. It is also favorable if at most 75% of the amount of wood dust generated during the processing of the wood chips is contained in the wood concrete.
  • the proportion of tree bark, bast and the like in the total amount of wood chips contained in the wood-concrete should not exceed 6%. If the above-mentioned limits are observed, a mixture of binder and wood chips which is optimal for the production of the absorption bodies according to the invention can be produced.
  • the design of the absorbent body according to the invention can be simplified in that recesses are formed in its underside, which when the absorbent body is placed on the sleepers Pick up track fasteners and / or projections of the sleepers.
  • Such a shape of the absorption body also makes it possible to bring their lateral boundaries as close as possible to the track in order to achieve optimum noise reduction.
  • the retention of the absorbent body according to the invention on the sleepers and the substructure of the track body can be improved in that projections are formed on the undersides of the absorbent body, by means of which the absorbent body, when placed on the sleepers, is connected to the sleepers in a substantially positive manner.
  • the ability to drain surface water to the substructure of the track body can be further improved in the absorption bodies according to the invention in that the surface of the absorption bodies is flat or curved in a convex manner.
  • the surface of the absorption bodies in the state placed on the sleepers should be at most 3 cm below the top of the tracks.
  • An absorbent body set can be put together from the absorbent bodies according to the invention, which consists of at least two pairs of such absorbent bodies.
  • One of the two absorbent bodies of the first pair can be placed laterally on one of the tracks from outside the track body, while the two absorbent bodies of the second pair can each be placed next to one another between the tracks.
  • the length of the absorbent body of the first pair should be twice the width of one of the absorbent body of the second pair correspond.
  • the absorption body set formed in this way consists of individual elements, the dimensions and weight of which are approximately the same. This enables the absorption body set according to the invention to be transported in a simple manner.
  • the weight of the individual elements of the absorbent body set according to the invention is so limited that these elements can be handled without any problems.
  • the sound-absorbing effect of an absorbent body set according to the invention can also be increased in that the absorbent bodies which can be applied laterally to one of the tracks from the outside of the track body have protrusions projecting freely into the space on the side of the track body.
  • the protrusions which are freely placed in the space in this way can dampen, for example, the structure-borne noise emitted laterally by the wheel sets of a train or the tracks of the track body.
  • a particularly high level of sound absorption is achieved in this context if the shape of the projections is adapted to the cross-sectional area occupied by a train traveling on the tracks. In this case, the projections of the absorption bodies in question are arranged as closely as possible adjacent to the tracks, whereby it is ensured that a train can pass through the corresponding absorption bodies without the risk of a collision.
  • the absorption bodies according to the invention are particularly suitable for damping airborne sound on a ballastless slab track.
  • the absorption bodies 1, 2 shown in FIGS. 1 and 2 are made of wood-concrete, which is produced on the basis of softwood chips. To achieve a high degree of absorption, the individual wood chips are not shorter than 4 cm and not longer than 12 cm. Their thickness is between 1 to 3 mm and a width of 2 to 4 mm.
  • the wood concrete used to manufacture the absorption bodies 1, 2 has a share of at least 65% of wood chips in the amount of the aggregates.
  • the wood chips are mixed mechanically with the other additives and the cement, whereby the mixing ratio is constantly checked and the temperature does not fall below 8 ° C.
  • the wood concrete is poured into molds in which the concrete is machined operated vibrating or ramming machines is compacted. Mechanical compaction is necessary to achieve a homogeneous mixing of the concrete.
  • the wood-concrete mixture After a setting time of approximately 4 weeks, the wood-concrete mixture has hardened.
  • the absorption bodies 1, 2 can be laid out after only one week, since at this point the wood-concrete already has a compressive strength of approximately 80% of its final strength.
  • the absorption body shown in FIG. 1 is intended to be placed on a track 3 from the outside 3a thereof.
  • recesses 4 are formed in the absorption body 1 starting from its underside 5.
  • the underside 5 rests on absorption bodies 1 placed on a rail 3 on the top of sleepers 6 made of prestressed concrete, which hold the tracks 3.
  • additional projections 7 are formed on the underside of the absorption body 1, which extend over the width B of the absorption body 1.
  • the width b of the projections essentially corresponds to the distance between the sleepers, so that the absorbent body is held in a form-fitting manner on the sleepers 6 in the state in which they are placed.
  • the absorption body 2 shown in Figure 2 is intended for insertion between the tracks 3. Its width C corresponds essentially to half the length L of the absorption body 1.
  • recesses 9 are formed in the corner regions thereof, which have the projections 6a of the sleepers 6 when the absorption body rests on the sleepers 6 record, tape.
  • Projections 10 are also on of the underside 8a and arranged at a distance c from one another which corresponds to the width of a threshold 6. In this way, the absorption body 2 is also held in a form-fitting manner on the sleepers 6 in the state in which they are placed.
  • a pair of absorbent bodies 1 and 2 together form an absorbent body set.
  • three such sets of absorption bodies have been designed for damping the airborne noise which is produced on the track body shown in FIG.
  • the sleepers 6 made of concrete rest on floor slabs 11 also made of concrete without an additional ballast bed.
  • the absorption bodies 1, 2 Due to the coordinated dimensions of the absorption bodies 1, 2 and the resulting low weight, the absorption bodies 1, 2 can be installed without any problems in a very short time. The breaks that pass between the passing of two trains are sufficient for this. To move the absorption bodies 1, 2, it is therefore not necessary to interrupt the driving operation on the tracks 3.
  • the absorption bodies 20 which can be placed laterally from the outside on the tracks 3 and are shown in FIG. 4, additionally have projections 20a which project freely into the space.
  • the projections 10a extend laterally along the tracks 3.
  • Their surface 20b assigned to the tracks 3 is chamfered in this way and the height H of the absorption bodies 20 is dimensioned such that the clear space encompassed by the projections 20a always ensures free, unimpeded passage of a train is sufficient.
  • the sloping surface 20b in question is brought so close to the tracks 3 that structure-borne noise radiated laterally by the wheelsets of the train or the tracks 3 is optimally damped.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)
EP95117408A 1995-11-06 1995-11-06 Corps d'absorption pour la réduction de bruit aérien Withdrawn EP0771907A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP95117408A EP0771907A1 (fr) 1995-11-06 1995-11-06 Corps d'absorption pour la réduction de bruit aérien

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP95117408A EP0771907A1 (fr) 1995-11-06 1995-11-06 Corps d'absorption pour la réduction de bruit aérien

Publications (1)

Publication Number Publication Date
EP0771907A1 true EP0771907A1 (fr) 1997-05-07

Family

ID=8219782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95117408A Withdrawn EP0771907A1 (fr) 1995-11-06 1995-11-06 Corps d'absorption pour la réduction de bruit aérien

Country Status (1)

Country Link
EP (1) EP0771907A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001002646A1 (fr) * 1999-07-06 2001-01-11 Bahnbau Wels Gmbh Voie pour vehicules sur rails et element de protection approprie
NL1012649C2 (nl) * 1999-07-20 2001-01-23 Grimbergen Holding B V Spoorplaat voor een spoorbaan, en bevestigingsmethode daarvoor.
DE10033000A1 (de) * 2000-07-06 2002-01-17 Thyssen Krupp Materials & Serv Schallgedämmter schotterloser Gleisoberbau für Schienenfahrzeuge sowie Schallabsorptionselement
AT411911B (de) * 1999-05-07 2004-07-26 Heraklith Ag Schallabsorptionselement und dessen verwendung
CN102587231A (zh) * 2011-01-17 2012-07-18 张洪德 无渣轨道道床吸声板安装方法
EP2865809A1 (fr) 2013-10-24 2015-04-29 Michael Leier KG Système d'habillage destiné à l'absorption acoustique du transport sur rails et procédé de pose
CN106812034A (zh) * 2017-03-31 2017-06-09 四川正升声学科技有限公司 一种高铁道床吸声体
CN111535082A (zh) * 2020-05-09 2020-08-14 上海工程技术大学 一种钢轨的多向液压减振动力吸振器结构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9001449U1 (de) * 1989-09-08 1990-04-12 Filigran Bauelemente AG, Oberdiesbach Plattenelement für eine Lärmschutzwand
DE9212474U1 (de) * 1992-05-25 1993-01-21 Suleiman, Rateb, 8024 Deisenhofen Schallschutzwand
FR2683368A1 (fr) * 1991-10-31 1993-05-07 Prefatech Sa Matelas absorbant le bruit.
US5324469A (en) * 1992-08-26 1994-06-28 Insul Holz-Beton Systems, Inc. Method of making single wood concrete layer sound absorption panel
DE9417848U1 (de) 1994-11-08 1994-12-22 Dyckerhoff & Widmann AG, 81902 München Schallabsorber für Gleistrassen auf festem undurchlässigem Untergrund
DE9417008U1 (de) * 1994-10-14 1995-03-09 Betonwerk Rethwisch GmbH, 17219 Möllenhagen Schallreduktionselement für feste Fahrbahn

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9001449U1 (de) * 1989-09-08 1990-04-12 Filigran Bauelemente AG, Oberdiesbach Plattenelement für eine Lärmschutzwand
FR2683368A1 (fr) * 1991-10-31 1993-05-07 Prefatech Sa Matelas absorbant le bruit.
DE9212474U1 (de) * 1992-05-25 1993-01-21 Suleiman, Rateb, 8024 Deisenhofen Schallschutzwand
US5324469A (en) * 1992-08-26 1994-06-28 Insul Holz-Beton Systems, Inc. Method of making single wood concrete layer sound absorption panel
DE9417008U1 (de) * 1994-10-14 1995-03-09 Betonwerk Rethwisch GmbH, 17219 Möllenhagen Schallreduktionselement für feste Fahrbahn
DE9417848U1 (de) 1994-11-08 1994-12-22 Dyckerhoff & Widmann AG, 81902 München Schallabsorber für Gleistrassen auf festem undurchlässigem Untergrund

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HAUCK ET AL.: "Untersuchungen zur Verringerung der Schallabstrahlung von "Festen Fahrbahnen" durch absorbierende Fahrbahnbeläge", STRASSEN- UND TIEFBAU, vol. 44, no. 7/8, ISERNHAGEN, pages 559 - 565, XP000195371 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT411911B (de) * 1999-05-07 2004-07-26 Heraklith Ag Schallabsorptionselement und dessen verwendung
WO2001002646A1 (fr) * 1999-07-06 2001-01-11 Bahnbau Wels Gmbh Voie pour vehicules sur rails et element de protection approprie
NL1012649C2 (nl) * 1999-07-20 2001-01-23 Grimbergen Holding B V Spoorplaat voor een spoorbaan, en bevestigingsmethode daarvoor.
WO2001006059A1 (fr) * 1999-07-20 2001-01-25 Grimbergen Holding B.V. Support de rail destine a une voie ferree et son procede de fixation
DE10033000A1 (de) * 2000-07-06 2002-01-17 Thyssen Krupp Materials & Serv Schallgedämmter schotterloser Gleisoberbau für Schienenfahrzeuge sowie Schallabsorptionselement
EP1170419A3 (fr) * 2000-07-06 2002-10-02 Durisol Raalte B.V. Superstructure insonorisée de voie ferrée sans ballast et élément d'absorption acoustique
CN102587231A (zh) * 2011-01-17 2012-07-18 张洪德 无渣轨道道床吸声板安装方法
EP2865809A1 (fr) 2013-10-24 2015-04-29 Michael Leier KG Système d'habillage destiné à l'absorption acoustique du transport sur rails et procédé de pose
CN106812034A (zh) * 2017-03-31 2017-06-09 四川正升声学科技有限公司 一种高铁道床吸声体
CN111535082A (zh) * 2020-05-09 2020-08-14 上海工程技术大学 一种钢轨的多向液压减振动力吸振器结构

Similar Documents

Publication Publication Date Title
EP0314996B1 (fr) Jeu d'éléments de pavage autobloquants
DE102020122516B4 (de) Betonstein und Flächenbelag
EP0787233B1 (fr) Infrastructure d'une voie destinee a des vehicules sur rails
EP0510497B1 (fr) Superstructure de voie-ferrée sans ballast
EP0771907A1 (fr) Corps d'absorption pour la réduction de bruit aérien
EP2817457A1 (fr) Dispositif anti-bruit
EP0549559B1 (fr) Superstructure équipée de traverses en béton
DE19931048A1 (de) Gleis für schienengebundene Fahrzeuge sowie Schallschutzelement hierfür
DE29515935U1 (de) Schallabsorber für einen schotterlosen Eisenbahnoberbau
DE19706708C2 (de) Vorrichtung zur Schalldämpfung einer festen Fahrbahn
AT405422B (de) Eisenbahnoberbau
DE202011052057U1 (de) Lärmschutzvorrichtung
DE29517583U1 (de) Absorptionskörper zur Luftschallreduzierung
DE69821881T2 (de) Schienengleis
DE10004626A1 (de) Verfahren zur Herstellung einer Entgleisungsschutzanordnung bei einer Schienenfahrbahn, eine Entgleisungsschutzanordnung umfassende Schienenfahrbahn und Entgleisungsschutzanordnung
DE29703508U1 (de) Feste Fahrbahn, vornehmlich für den Weichenbereich
WO1995020069A1 (fr) Infrastructure de voies de chemins de fer
DE19635788A1 (de) Schalldämpfungselement für Schienentrassen mit fester Fahrbahn
AT525271A4 (de) Schallschutzelement
EP1034332B1 (fr) Traverse de chemin de fer
EP1897992B1 (fr) Traverse de chemin de fer
DE9417848U1 (de) Schallabsorber für Gleistrassen auf festem undurchlässigem Untergrund
AT411911B (de) Schallabsorptionselement und dessen verwendung
DE10033000A1 (de) Schallgedämmter schotterloser Gleisoberbau für Schienenfahrzeuge sowie Schallabsorptionselement
EP1323864B1 (fr) Ballast pour lit de ballast d'une voie ferrée

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 19971010

17Q First examination report despatched

Effective date: 19991109

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20020108