EP2531652B1 - Track bed mat for a railway superstructure - Google Patents

Track bed mat for a railway superstructure Download PDF

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Publication number
EP2531652B1
EP2531652B1 EP11703592.3A EP11703592A EP2531652B1 EP 2531652 B1 EP2531652 B1 EP 2531652B1 EP 11703592 A EP11703592 A EP 11703592A EP 2531652 B1 EP2531652 B1 EP 2531652B1
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EP
European Patent Office
Prior art keywords
mat
range
track bed
railway superstructure
bed mat
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EP11703592.3A
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German (de)
French (fr)
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EP2531652A1 (en
Inventor
Gerd GRÜTZE
Hubert Christoph Schwind
Christian Renner
Tino GOLDHAUSEN
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Edilon Sedra GmbH
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Edilon Sedra GmbH
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Priority to PL11703592T priority Critical patent/PL2531652T3/en
Priority to EP15192311.7A priority patent/EP3002368B1/en
Publication of EP2531652A1 publication Critical patent/EP2531652A1/en
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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
    • E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
    • E01B1/001—Track with ballast
    • 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
    • E01B2204/00—Characteristics of the track and its foundations
    • E01B2204/01—Elastic layers other than rail-pads, e.g. sleeper-shoes, bituconcrete

Definitions

  • the invention relates to a railway superstructure comprising: a track system, mounted on rails and a resilient track bed mat as a continuous base of the track system, wherein the resilient track mat consists of polyurethane-bonded rubber material or polyurethane.
  • Such a railway superstructure is out EP-A-2 014 831 A1 known.
  • This includes a trackage system, rails mounted thereon, and a resilient trackbed mat as a continuous underlay of the track bed system, wherein the resilient trackbed mat is made of polyurethane bonded rubber material.
  • the disadvantage here is the indefinite suspension behavior of the resilient trackbed mat.
  • Another railway superstructure is out EP 0 922 808 A2 known.
  • a base a two-layer, resilient mat is used, the upper layer consists of polyurethane-bound rubber granulate and the lower layer of a rock wool plate.
  • One of the tasks of this resilient mat is to hinder the generation and propagation of low-frequency sound.
  • the resilient mat of the railway superstructure forms a mass-spring system that leads to an effective sound-absorbing storage of the tracks and thus the rails with proper tuning of the spring.
  • a layer of crushed stone on the low-lying elastomer layer, which lies between the superstructure and the ground, is out DE 10 2006 013 851 A1 known and serves the mixing of vibrations on track systems.
  • Polyurethane or rubber mats can be engineered for matching spring rate or modulus of elasticity to produce a mass-spring system with a low tuning frequency below 100 Hz in a railway superstructure, however, making such mats is quite expensive.
  • the invention is therefore an object of the invention to provide a railway superstructure with a resilient track mat and adjust their spring characteristics of a track mat made of polyurethane-bonded rubber material.
  • the starting material for producing the resilient mats can be procured inexpensively, and the production of perforated mats or plates is not expensive. While a solid material mat or sheet of polyurethane bonded rubber recycling material tends to show too low compliance, which does not meet the desired spring characteristics, when the necessary load bearing capacity is taken into account, the perforations will provide resilient compliance of the perforated mat or sheet Plate created, which corresponds to the desired spring property, while the necessary carrying capacity is achieved. This is made possible by the fact that near-hole material of the mat can be displaced into the space of the perforations under dynamic loading, but with dynamic relief the material displaced into the hole space returns to its original position in a springy manner. The mat thus shows the overall behavior of a soft spring, while the load capacity of the mat withstands the stresses of driving on the tracks.
  • the suspension behavior of the perforated mat or plate can be described with the so-called bedding module.
  • the static bedding modulus (for static loads) should be in the range of 0.005 to 0.08 N / mm 2 and the dynamic Modulus be in the range of 0.02 to 0.1 N / mm 2 .
  • An excellent value of the static bedding modulus is 0.014 N / mm 2 and of the dynamic bedding modulus 0.04 N / mm 2 at a material thickness of 23 mm.
  • the mat sinks about 1.7 mm.
  • a bearing plate of 65 Shore A lowers at the same load only 0.2 mm.
  • it is sufficient if the maximum allowable compressive stress of the trackbed mat is less than 2 N / mm 2 .
  • the gum recycling material contains fibrous material such as is found in the crushing of scrap tires.
  • the rubber fibers thus obtained can be present in a length range of 1 to 20 mm and make up a proportion of between 20 and 90% of mat material. Rubber granulates with a grain size between 1 and 5 mm can account for up to 60% of the mat material.
  • the in Fig. 1 Railway superstructure shown forms a track with two rails 1, with concrete sleepers 9 and a ballast layer 6. Below the ballast layer 6, a film or a fabric 7 may extend, as it is known.
  • the railway superstructure is closed to the ground 8 through a trackbed mat 10, which extends in length and width under the entire ballast layer 6 and consists of polyurethane-bonded rubber recycling material, as will be described in detail below.
  • the trackbed mat 10 is made of individual plates of z. B. 2000 x 1000 mm dimension, optionally with waste, composed.
  • the trackbed mat is preferably applied in two layers with non-overlapping shocks.
  • the thickness of a ballast bed is 300 to 390 mm in Depending on the design speed and can be divided into two layers, with one layer of the trackbed mat as an intermediate layer and the other layer as a sub-camp of the ballast bed.
  • the elastic compliance of the two layers is dimensioned so that the desired embedding results.
  • the plate thickness and the plate density are chosen, taking into account the volume fraction of the holes 11 for the respective application areas.
  • roadway is constructed in layers and includes tram rails 1, which is included in the interposed Kammer Strukturllmaschinen 2 in a pavement layer as a pavement 3.
  • the rails 1 are mounted on a concrete slab 5, which may have a thickness between 200 and 400 mm.
  • an elastic mounting plate 4 is added to reduce the generation of sound when driving on the tram track.
  • the trackbed mat 10 is in Fig. 3 shown closer and has a plate thickness in the range of 10 to 50 mm.
  • the dimensions depend on the application and may include plates with lengths of 1000 to 2000 mm and widths of 500 to 1000 mm.
  • In the plate body transversely to the plane of the plate perforations 11 are regularly attached, which are formed continuously or as blind holes.
  • the volume of the holes 11 is 10 to 40% of the plate volume of the mats 10.
  • the hole diameter is in the range of 5 to 30 mm.
  • the mats are made of recycled rubber bonded by polyurethane.
  • the production takes place under a certain pressing pressure in order to achieve a desired density of the plate with regard to its respective application.
  • the exact degree of density is set with regard to the required load-bearing capacity and the desired resilience of the mat. The denser the mat, the less yielding it is.
  • the static and dynamic loads must be handled by the mat, which in turn requires a certain density of the webs 12 between the holes 11.
  • a perforated mat of a density of 480 kg / m 3 with a thickness of 23 mm and perforations of 15 mm diameter was produced.
  • the resilience of the trackbed mat is measured by the ballast module according to DIN 45673-7.
  • the maximum allowable compressive stress for this mat was 0.15 N / mm 2 .
  • the specially described mat is suitable for the elastic storage and structure-borne noise reduction of buildings and railways. It creates a mass-spring system in this environment, with the relevant Eingladenämmconnect is achieved due to the low ballast modules of the mat.
  • the depression of the perforated mat at a stress ⁇ of 0.025 N / mm 2 is about 1.7 mm and thus fulfills the criterion of a static bedding modulus C stat of 0.014 N / mm 3 at 23 mm material thickness.
  • the elastic support plate 4 of a polyurethane plate or a rubber plate with a Shore A hardness of 65 may exist to accommodate the significant surface load on the rail.
  • a depression that is 10 times smaller than would be the case with the same load is established if an equally sized plate of the mat formation 10 were used. Therefore, bearing plates 4 are unsuitable as trackbed mats 10, it lacks the necessary compliance.
  • plates of the type of trackbed mats 10 are unsuitable as bearing plates 4, because their permissible compressive stress is too small for the considerable loads below the rail foot.
  • the non-inventive trackbed mats can be made of polyurethane, if it is ensured by suitable perforations in mats suitably thick that a suspension behavior with sufficient depression in rail operation or in the operation of a web is achieved.
  • the suspension behavior is determined by the static and dynamic bedding modulus, which should be in the range of 0.005 to 0.08 N / mm 2 for the static bedding modulus and in the range of 0.02 to 0.1 N / mm 2 for the dynamic bedding modulus.
  • polyurethane plates with the following mechanical properties: properties standard value unit Remarks tensile strenght ISO 1798 > 0.4 MPa elongation ISO 1798 > 200 % Stat. Pressure module at + 23 ° C DIN 45673-7 0.06 MPa 0.005-0.02 MPa 0.06 MPa 0.01-0.04 MPa Dyn.
  • Such plates are produced with perforations, wherein preferably the mat thus produced is provided with a casting skin.
  • the dimensions of the polyurethane mat are in the range of dimensions of track mat mats of recycled rubber material but with a tendency to thinner web walls.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)

Description

Gebiet der ErfindungField of the invention

Die Erfindung bezieht sich auf einen Eisenbahnoberbau umfassend: ein Gleistragsystem, auf diesem montierte Schienen und eine federnde Gleisbettmatte als fortlaufende Unterlage des Gleistragsystems, wobei die federnde Gleisbettmatte aus mit Polyurethan gebundenem Gummimaterial oder aus Polyurethan besteht.The invention relates to a railway superstructure comprising: a track system, mounted on rails and a resilient track bed mat as a continuous base of the track system, wherein the resilient track mat consists of polyurethane-bonded rubber material or polyurethane.

Hintergrund der ErfindungBackground of the invention

Ein derartiger Eisenbahnoberbau ist aus EP-A-2 014 831 A1 bekannt. Dieser umfasst ein Gleistragsystem, auf diesem montierte Schienen und eine federnde Gleisbettmatte als fortlaufende Unterlage des Gleisbettsystems, wobei die federnde Gleisbettmatte aus mit Polyurethan gebundenem Gummimaterial besteht. Nachteilig hierbei ist das unbestimmte Federungsverhalten der federnden Gleisbettmatte.Such a railway superstructure is out EP-A-2 014 831 A1 known. This includes a trackage system, rails mounted thereon, and a resilient trackbed mat as a continuous underlay of the track bed system, wherein the resilient trackbed mat is made of polyurethane bonded rubber material. The disadvantage here is the indefinite suspension behavior of the resilient trackbed mat.

Ein weiterer Eisenbahnoberbau ist aus EP 0 922 808 A2 bekannt. Als Unterlage wird eine zweischichtige, federnde Matte verwendet, deren obere Schicht aus mit Polyurethan gebundenem Gummigranulat und deren untere Schicht aus einer Steinwolleplatte besteht. Aufgabe dieser federnden Matte ist unter anderem, die Erzeugung und Ausbreitung von niederfrequentem Schall zu behindern. Zusammen mit der federnden Matte bildet der Eisenbahnoberbau ein Masse-Feder-System, das bei richtiger Abstimmung der Feder zu einer wirksamen schalldämmenden Lagerung der Gleise und damit auch der Schienen führt.Another railway superstructure is out EP 0 922 808 A2 known. As a base, a two-layer, resilient mat is used, the upper layer consists of polyurethane-bound rubber granulate and the lower layer of a rock wool plate. One of the tasks of this resilient mat is to hinder the generation and propagation of low-frequency sound. Together with the resilient mat of the railway superstructure forms a mass-spring system that leads to an effective sound-absorbing storage of the tracks and thus the rails with proper tuning of the spring.

Eine weitere schalldämmende Lagerung von Gleisen ist aus DE 199 52 803 A1 bekannt. Dort wird die Feder des Masse-Feder-Systems aus einer sogenannten Entropie-elastischen Matte aus Polyurethan oder Natur- oder Synthese-Kautschuk mit einer Dicke zwischen 15 mm und 40 mm gebildet.Another soundproofing of rail tracks is out DE 199 52 803 A1 known. There, the spring of the mass-spring system from a so-called entropy-elastic mat Polyurethane or natural or synthetic rubber formed with a thickness between 15 mm and 40 mm.

Eine Schottertrageschicht auf tiefliegender Elastomerschicht, die zwischen Oberbau und Untergrund liegt, ist aus DE 10 2006 013 851 A1 bekannt und dient der Vermischung von Erschütterungen an Gleisanlagen.A layer of crushed stone on the low-lying elastomer layer, which lies between the superstructure and the ground, is out DE 10 2006 013 851 A1 known and serves the mixing of vibrations on track systems.

Matten aus Polyurethan oder aus Kautschuk können fertigungstechnisch auf passende Federkonstante bzw. Elastizitätsmodul eingestellt werden, um bei einem Eisenbahnoberbau ein Masse-Feder-System mit einer niedrigen Abstimmungsfrequenz unterhalb von 100 Hz zu erzeugen, jedoch ist die Herstellung derartiger Matten ziemlich teuer.Polyurethane or rubber mats can be engineered for matching spring rate or modulus of elasticity to produce a mass-spring system with a low tuning frequency below 100 Hz in a railway superstructure, however, making such mats is quite expensive.

Allgemeine Beschreibung der ErfindungGeneral description of the invention

Der Erfindung liegt von daher die Aufgabe zugrunde, einen Eisenbahnoberbau mit einer federnden Gleisbettmatte bereitzustellen und deren Federeigenschaften der einer Gleisbettmatte aus mit Polyurethan gebundenem Gummimaterial anzupassen.The invention is therefore an object of the invention to provide a railway superstructure with a resilient track mat and adjust their spring characteristics of a track mat made of polyurethane-bonded rubber material.

Die Lösung dieser Aufgabe ergibt sich aus der Kombination der Merkmale der unabhängigen Ansprüche.The solution to this problem arises from the combination of the features of the independent claims.

Das Ausgangsmaterial zur Herstellung der federnden Matten kann preisgünstig beschafft werden, und auch die Herstellung von gelochten Matten oder Platten ist nicht teuer. Während eine Vollmaterial-Matte oder -Platte aus mit Polyurethan gebundenem Gummi-Recyclingmaterial tendenziell eine zu geringe Nachgiebigkeit zeigt, was nicht den gewünschten Federeigenschaften entspricht, wenn die notwendige Tragfähigkeit mit ins Kalkül gezogen wird, wird durch die Lochungen eine federnde Nachgiebigkeit der gelochten Matte oder Platte geschaffen, die der gewünschten Federeigenschaft entspricht, während gleichzeitig die notwendige Tragfähigkeit erreicht wird. Dies wird dadurch möglich, dass sich lochnahes Material der Matte bei dynamischer Belastung in den Raum der Lochungen hinein verdrängen lässt, wobei jedoch bei dynamischer Entlastung das in den Lochraum verdrängte Material wieder in seine Ursprungsstellung federnd zurückkehrt. Die Matte zeigt so insgesamt das Verhalten einer weichen Feder, während die Tragfähigkeit der Matte den Belastungen des Fahrbetriebs auf den Gleisen standhält.The starting material for producing the resilient mats can be procured inexpensively, and the production of perforated mats or plates is not expensive. While a solid material mat or sheet of polyurethane bonded rubber recycling material tends to show too low compliance, which does not meet the desired spring characteristics, when the necessary load bearing capacity is taken into account, the perforations will provide resilient compliance of the perforated mat or sheet Plate created, which corresponds to the desired spring property, while the necessary carrying capacity is achieved. This is made possible by the fact that near-hole material of the mat can be displaced into the space of the perforations under dynamic loading, but with dynamic relief the material displaced into the hole space returns to its original position in a springy manner. The mat thus shows the overall behavior of a soft spring, while the load capacity of the mat withstands the stresses of driving on the tracks.

Für die Herstellung der gelochten Matten ist ein Bereich der Durchmesser von 5 bis 30 mm gewählt.For the production of perforated mats a range of diameters of 5 to 30 mm is chosen.

Das Federungsverhalten der gelochten Matte oder Platte kann mit dem sogenannten Bettungsmodul beschrieben werden. Der statische Bettungsmodul (für statische Belastungen) sollte im Bereich von 0,005 bis 0,08 N/mm2 und der dynamische Bettungsmodul im Bereich von 0,02 bis 0,1 N/mm2 liegen. Ein hervorragend guter Wert des statischen Bettungsmoduls ist 0,014 N/mm2 und des dynamischen Bettungsmoduls 0,04 N/mm2 bei 23 mm Materialdicke. Bei einer Spannung σ von 0,025 N/mm2 senkt sich die Matte etwa 1,7 mm ein. (Im Vergleich: Eine Lagerungsplatte von 65 Shore A senkt sich bei der gleichen Belastung nur 0,2 mm ein.) Vorzugsweise genügt es, wenn die maximal zulässige Druckspannung der Gleisbettmatte kleiner als 2 N/mm2 ist.The suspension behavior of the perforated mat or plate can be described with the so-called bedding module. The static bedding modulus (for static loads) should be in the range of 0.005 to 0.08 N / mm 2 and the dynamic Modulus be in the range of 0.02 to 0.1 N / mm 2 . An excellent value of the static bedding modulus is 0.014 N / mm 2 and of the dynamic bedding modulus 0.04 N / mm 2 at a material thickness of 23 mm. At a stress σ of 0.025 N / mm 2 , the mat sinks about 1.7 mm. (In comparison: A bearing plate of 65 Shore A lowers at the same load only 0.2 mm.) Preferably, it is sufficient if the maximum allowable compressive stress of the trackbed mat is less than 2 N / mm 2 .

Zur Erzielung des niedrigen Bettungsmoduls ist es günstig, wenn das Gummi-Recyclingmaterial faseriges Material enthält, wie es beim Zerkleinern von Altreifen anfällt. Die so gewonnenen Gummifasern können in einem Längenbereich von 1 bis 20 mm zugegen sein und einen Anteil zwischen 20 und 90 % an Mattenmaterial ausmachen. Gummigranulate in einer Körnung zwischen 1 und 5 mm können einen Anteil im Bereich bis zu 60 % an dem Mattenmaterial ausmachen.To achieve the low ballast modulus, it is beneficial if the gum recycling material contains fibrous material such as is found in the crushing of scrap tires. The rubber fibers thus obtained can be present in a length range of 1 to 20 mm and make up a proportion of between 20 and 90% of mat material. Rubber granulates with a grain size between 1 and 5 mm can account for up to 60% of the mat material.

Eine nicht erfindungsgemäße Gleisbettmatte kann aus Polyurethan einer Spezifikation wie folgt bestehen :

  • Zugfestigkeit: > 0,4 MPa
  • Bruchfestigkeit: > 200%
  • Statisches Druckmodul: 0,06 bis 0,42 MPa
  • Dynamisches Druckmodul: 0,21 bis 0,51 MPa
  • Reißfestigkeit: > 10N/cm
wobei die Gleisbettmatte quer zur Mattenebene Lochungen aufweist, die über die Mattenoberfläche verteilt angebracht sind, und eine solche Dicke aufweist, dass ein Federungsverhalten mit einem statischen Bettungsmodul im Bereich von 0,005 bis 0,08 N/mm2 und mit einem dynamischen Bettungsmodul im Bereich von 0,02 bis 0,1 N/mm2 für die Matte als solche erzielt wird.A non-inventive trackbed mat may consist of polyurethane of a specification as follows:
  • Tensile strength:> 0.4 MPa
  • Breaking strength:> 200%
  • Static pressure module: 0.06 to 0.42 MPa
  • Dynamic pressure modulus: 0.21 to 0.51 MPa
  • Tear strength:> 10N / cm
wherein the trackbed mat has perforations transverse to the mat plane which are distributed over the mat surface and have such a thickness, that a suspension behavior is achieved with a static ballast modulus in the range of 0.005 to 0.08 N / mm 2 and with a dynamic ballast modulus in the range of 0.02 to 0.1 N / mm 2 for the mat as such.

Kurzbeschreibung der FigurenBrief description of the figures

Ausführungsbeispiele der Erfindung werden anhand der nachfolgenden Figuren beschrieben. Dabei zeigen:

Fig. 1
einen Querschnitt durch einen Eisenbahnoberbau,
Fig. 2
einen Querschnitt durch eine Fahrbahn mit Straßenbahnschiene und
Fig. 3
eine gelochte Gleisbettmatte.
Embodiments of the invention will be described with reference to the following figures. Showing:
Fig. 1
a cross section through a railway superstructure,
Fig. 2
a cross section through a roadway with tram track and
Fig. 3
a perforated track mat.

Detaillierte Beschreibung der ErfindungDetailed description of the invention

Der in Fig. 1 dargestellte Eisenbahnoberbau bildet ein Gleis mit zwei Schienen 1, mit Betonschwellen 9 und einer Schotterschicht 6. Unterhalb der Schotterschicht 6 kann sich eine Folie oder ein Gewebe 7 erstrecken, wie es bekannt ist. Der Eisenbahnoberbau wird zum Untergrund 8 hin durch eine Gleisbettmatte 10 abgeschlossen, die sich in Länge und Breite unter der gesamten Schotterschicht 6 erstreckt und aus mit Polyurethan gebundenem Gummi-Recyclingmaterial besteht, wie nachfolgend im Einzelnen beschrieben wird.The in Fig. 1 Railway superstructure shown forms a track with two rails 1, with concrete sleepers 9 and a ballast layer 6. Below the ballast layer 6, a film or a fabric 7 may extend, as it is known. The railway superstructure is closed to the ground 8 through a trackbed mat 10, which extends in length and width under the entire ballast layer 6 and consists of polyurethane-bonded rubber recycling material, as will be described in detail below.

Die Gleisbettmatte 10 wird aus einzelnen Platten von z. B. 2000 x 1000 mm Abmessung, gegebenenfalls unter Verschnitt, zusammengesetzt. Um eine gleichmäßige Einbettung zu erzielen, wird die Gleisbettmatte bevorzugt in zwei Lagen mit sich nicht überschneidenden Stößen angewendet. Die Dicke eines Schotterbetts beträgt 300 bis 390 mm in Abhängigkeit von der Entwurfsgeschwindigkeit und kann in zwei Schichten unterteilt werden, mit der einen Lage der Gleisbettmatte als Zwischenlage und der anderen Lage als Unterlager des Schotterbettes. Die elastische Nachgiebigkeit der beiden Lagen ist so bemessen, dass sich die gewünschte Einbettung ergibt. Hierzu werden die Plattendicke und die Plattendichte unter Berücksichtigung des Volumenanteils der Lochungen 11 für die jeweiligen Anwendungsbereiche passend gewählt.The trackbed mat 10 is made of individual plates of z. B. 2000 x 1000 mm dimension, optionally with waste, composed. In order to achieve a uniform embedding, the trackbed mat is preferably applied in two layers with non-overlapping shocks. The thickness of a ballast bed is 300 to 390 mm in Depending on the design speed and can be divided into two layers, with one layer of the trackbed mat as an intermediate layer and the other layer as a sub-camp of the ballast bed. The elastic compliance of the two layers is dimensioned so that the desired embedding results. For this purpose, the plate thickness and the plate density are chosen, taking into account the volume fraction of the holes 11 for the respective application areas.

Die in Fig. 2 dargestellte Fahrbahn ist schichtweise aufgebaut und enthält Straßenbahnschienen 1, die bei zwischengefügten Kammerfüllelementen 2 in eine Pflasterschicht als Fahrbahndecke 3 einbezogen ist. Die Schienen 1 sind auf einer Betonplatte 5 befestigt, die eine Dicke zwischen 200 und 400 mm aufweisen kann. Zwischen Schienenfuß und Betonplatte 5 ist eine elastische Lagerungsplatte 4 gefügt, um die Schallerzeugung beim Befahren der Straßenbahnschiene zu vermindern.In the Fig. 2 shown roadway is constructed in layers and includes tram rails 1, which is included in the interposed Kammerfüllelementen 2 in a pavement layer as a pavement 3. The rails 1 are mounted on a concrete slab 5, which may have a thickness between 200 and 400 mm. Between rail foot and concrete slab 5 is an elastic mounting plate 4 is added to reduce the generation of sound when driving on the tram track.

Die Gleisbettmatte 10 ist in Fig. 3 näher dargestellt und weist eine Plattendicke im Bereich von 10 bis 50 mm auf. Die Abmessungen richten sich nach der Anwendung und kann Platten mit Längen von 1000 bis 2000 mm und Breiten von 500 bis 1000 mm umfassen. In dem Plattenkörper quer zur Plattenebene sind regelmäßig Lochungen 11 angebracht, die durchgehend oder als Sacklöcher ausgebildet sind. Das Volumen der Lochungen 11 beträgt 10 bis 40 % des Plattenvolumens der Matten 10. Der Lochungsdurchmesser liegt im Bereich von 5 bis 30 mm.The trackbed mat 10 is in Fig. 3 shown closer and has a plate thickness in the range of 10 to 50 mm. The dimensions depend on the application and may include plates with lengths of 1000 to 2000 mm and widths of 500 to 1000 mm. In the plate body transversely to the plane of the plate perforations 11 are regularly attached, which are formed continuously or as blind holes. The volume of the holes 11 is 10 to 40% of the plate volume of the mats 10. The hole diameter is in the range of 5 to 30 mm.

Die Matten werden aus recyceltem Gummi hergestellt, das durch Polyurethan gebunden wird. Man presst zunächst dickere Blöcke und spaltet in einem späteren Verfahrensschritt einzelne Platten mit gewünschter Dicke ab. Mit der Pressung des Blockes werden gleichzeitig die Lochungen 11 angebracht, indem Pressstempel durch die Bohrungen einer Werkzeug-Lochplatte hindurch in das noch nicht ausgehärtete Material des Blockes hineingepresst werden. Auf diese Weise sind die Lochungen 11 mit einer Gießhaut umgeben, was für die Qualität der Matte von Bedeutung ist. Die Herstellung erfolgt unter einem gewissen Pressdruck, um eine gewünschte Dichte der Platte im Hinblick auf ihre jeweilige Anwendung zu erzielen. Das jeweils genaue Maß der Dichte wird mit Rücksicht auf die erforderliche Tragfähigkeit und die gewünschte Nachgiebigkeit der Matte eingestellt. Je dichter die Matte, umso weniger nachgiebig ist sie. Andererseits müssen die statischen und dynamischen Belastungen von der Matte bewältigt werden, was wiederum eine gewisse Dichte der Stege 12 zwischen den Lochungen 11 erforderlich macht.The mats are made of recycled rubber bonded by polyurethane. First you press thicker blocks and split in a later process step individual plates of the desired thickness. With the pressing of the block, the holes 11 are at the same time attached by pressing ram are pressed through the holes of a tool hole plate into the not yet cured material of the block. In this way, the perforations 11 are surrounded by a casting skin, which is important for the quality of the mat. The production takes place under a certain pressing pressure in order to achieve a desired density of the plate with regard to its respective application. The exact degree of density is set with regard to the required load-bearing capacity and the desired resilience of the mat. The denser the mat, the less yielding it is. On the other hand, the static and dynamic loads must be handled by the mat, which in turn requires a certain density of the webs 12 between the holes 11.

Rezeptur des MattenmaterialsRecipe of the mat material

Gewichtsanteileweight Fasernfibers 20 - 90 %20 - 90% Granulat 1-5 mm KörnungGranules 1-5 mm grain size 0 - 60 %0 - 60% Polyurethane MDI PrepolymerPolyurethane MDI prepolymer 3 - 15 %3 - 15% Polyolepolyols 3 - 15 %.3 - 15%.

Beispielexample

Gewichtsanteileweight Fasern 1-5 mm langFibers 1-5 mm long 24 %24% Fasern 8-20 mm langFibers 8-20 mm long 5 %5% Granulat 1-5 mm KörnungGranules 1-5 mm grain size 55 %55% Polyurethane MDI PrepolymerPolyurethane MDI prepolymer 8 %8th % Polyolepolyols 8 %.8th %.

Es wurde eine gelochte ünbewehrte Matte einer Dichte von 480 kg/m3 mit einer Dicke von 23 mm und mit Lochungen von 15 mm Durchmesser hergestellt. Die Nachgiebigkeit der Gleisbettmatte wird durch den Bettungsmodul nach DIN 45673-7 gemessen. Bei dem Ausführungsbeispiel betrug der statische Bettungsmodul Cstat ∼ 0,014 N/mm2 bei σ = 0,025 N/mm2. Der dynamische Bettungsmodul betrug ∼ 0,04 N/mm2 bei σ = 0,03 N/mm2 und 40 Hz. Die maximal zulässige Druckspannung bei dieser Matte betrug 0,15 N/mm2.A perforated mat of a density of 480 kg / m 3 with a thickness of 23 mm and perforations of 15 mm diameter was produced. The resilience of the trackbed mat is measured by the ballast module according to DIN 45673-7. In the embodiment, the static bedding modulus C stat ~ 0.014 N / mm 2 at σ = 0.025 N / mm 2 . The dynamic bedding modulus was ~ 0.04 N / mm 2 at σ = 0.03 N / mm 2 and 40 Hz. The maximum allowable compressive stress for this mat was 0.15 N / mm 2 .

Die speziell beschriebene Matte ist für die elastische Lagerung und Körperschallminderung von Bauwerken und Gleisfahrwegen geeignet. Es wird in dieser Umgebung ein Masse-Feder-System geschaffen, mit dem das relevante Einfügedämmmaß infolge der geringen Bettungsmodule der Matte erreicht wird. Im statischen Bereich liegt die Einsenkung der gelochten Matte bei einer Spannung σ von 0,025 N/mm2 bei etwa 1,7 mm und erfüllt damit das Kriterium eines statischen Bettungsmoduls Cstat von 0,014 N/mm3 bei 23 mm Materialstärke.The specially described mat is suitable for the elastic storage and structure-borne noise reduction of buildings and railways. It creates a mass-spring system in this environment, with the relevant Einfüdenämmmaß is achieved due to the low ballast modules of the mat. In the static range, the depression of the perforated mat at a stress σ of 0.025 N / mm 2 is about 1.7 mm and thus fulfills the criterion of a static bedding modulus C stat of 0.014 N / mm 3 at 23 mm material thickness.

Es sei bemerkt, dass die elastische Lagerungsplatte 4 aus einer Polyurethanplatte oder einer Gummiplatte mit einer Shore-Härte A von 65 bestehen kann, um die erhebliche Flächenlast am Schienenfuß aufzunehmen. Bei einer solchen Platte stellt sich eine Einsenkung ein, die 10-fach kleiner ist, als sich bei der gleichen Last einstellen würde, wenn eine gleich bemessene Platte der Mattenausbildung 10 verwendet werden würde. Deshalb sind Lagerplatten 4 ungeeignet als Gleisbettmatten 10, es fehlt an der nötigen Nachgiebigkeit. Umgekehrt sind Platten nach Art der Gleisbettmatten 10 ungeeignet als Lagerplatten 4, weil ihre zulässige Druckspannung zu klein für die erheblichen Lasten unterhalb des Schienenfußes sind.It should be noted that the elastic support plate 4 of a polyurethane plate or a rubber plate with a Shore A hardness of 65 may exist to accommodate the significant surface load on the rail. In such a plate, a depression that is 10 times smaller than would be the case with the same load is established if an equally sized plate of the mat formation 10 were used. Therefore, bearing plates 4 are unsuitable as trackbed mats 10, it lacks the necessary compliance. Conversely, plates of the type of trackbed mats 10 are unsuitable as bearing plates 4, because their permissible compressive stress is too small for the considerable loads below the rail foot.

Die nicht erfindungsgemäßen Gleisbettmatten können aus Polyurethan hergestellt, werden, wenn durch geeignete Lochungen in passend dicken Matten dafür gesorgt wird, dass ein Federungsverhalten mit ausreichender Einsenkung im Schienenverkehrsbetrieb bzw. im Betrieb einer Bahn erzielt wird. Das Federungsverhalten wird durch den statischen und dynamischen Bettungsmodul bestimmt, der für den statischen Bettungsmodul im Bereich von 0,005 bis 0,08 N/mm2 und für den dynamischen Bettungsmodul im Bereich von 0,02 bis 0,1 N/mm2 liegen sollte.The non-inventive trackbed mats can be made of polyurethane, if it is ensured by suitable perforations in mats suitably thick that a suspension behavior with sufficient depression in rail operation or in the operation of a web is achieved. The suspension behavior is determined by the static and dynamic bedding modulus, which should be in the range of 0.005 to 0.08 N / mm 2 for the static bedding modulus and in the range of 0.02 to 0.1 N / mm 2 for the dynamic bedding modulus.

Für den Schienenverkehr entwickelte Polyurethanplatten haben folgende mechanischen Eigenschaften: Eigenschaften Norm Wert Einheit Anmerkungen Zugfestigkeit ISO 1798 > 0,5 MPa Bruchdehnung ISO 1798 > 250 % Stat. Druckmodul bei +23°C DIN 45673-7 0,42 MPa 0,005-0.02MPa 0,12 MPa 0,01-0.04MPa Dyn. Druckmodul bei +23°C DIN 45673-7 0,29-0,51 MPa 5-30 Hz bei 0,03 MPa Vorlast Verlustfaktor (Tangens Delta) DIN 45673-7 0,3 - 5-30 Hz bei 0,03 MPa Vorlast Dauerschwellversuch mit 3 Mio. Belastungszyklen bei DIN 45673-7 < 11 % Belastungsbereich 0,01-0,03 MPa 3 Hz, Belastungsbereiche 0,01-0.03 und 0.01-0,05 MPa: Differenz im stat. Druckmodul < 8 % Belastungsbereich 0,01-0.05 MPa Dyn. Wasserabsorptionstest 24h bei 0,3 Hz Belastungsbereich 0,02-0,06 MPa: Differenz im stat. Druckmodul DIN 45673-7 (zusätzlich) < 11 % Nass < 4 % Wieder trocken Druckmodul bei -20°C DIN 45673-7 0,13 MPa Stat.: 0,01-0,04 MPa 0,56-1,06 MPa Dyn.: 5-30 Hz 0,03 MPa Vorlast Druckmodul bei +50°C DIN 45673-7 0,13 MPa Stat.: 0,01-0,04 MPa 0,26-0,47 MPa Dyn.: 5-30 Hz 0,03 MPa Vorlast Glasübergangstemperatur (DMTA) ASTM D 4065 IEC 61006 - 30 °C DTMA "dual cantilever"-Test bei 1 Hz, +2°C/min Größe Prüfmuster 10x15x60 mm Reißfestigkeit ASTM D 3574/F > 10 N/cm Druckverformungsrest nach 7 Tagen bei +23°C (50%) ISO 1856 B < 5 % For the rail transport developed polyurethane plates have the following mechanical properties: properties standard value unit Remarks tensile strenght ISO 1798 > 0.5 MPa elongation ISO 1798 > 250 % Stat. Pressure module at + 23 ° C DIN 45673-7 0.42 MPa 0,005-0.02MPa 0.12 MPa 0,01-0.04MPa Dyn. Pressure module at + 23 ° C DIN 45673-7 from 0.29 to 0.51 MPa 5-30 Hz at 0.03 MPa preload Loss factor (tangent delta) DIN 45673-7 0.3 - 5-30 Hz at 0.03 MPa preload Permanent swelling test with 3 million loading cycles at DIN 45673-7 <11 % Load range 0.01-0.03 MPa 3 Hz, load ranges 0.01-0.03 and 0.01-0.05 MPa: difference in stat. print module <8 % Loading range 0.01-0.05 MPa Dynamic water absorption test 24h at 0.3 Hz Load range 0.02-0.06 MPa: difference in stat. print module DIN 45673-7 (additional) <11 % Wet <4 % Dry again Pressure module at -20 ° C DIN 45673-7 0.13 MPa Stat .: 0.01-0.04 MPa 0.56 to 1.06 MPa Dyn .: 5-30 Hz 0.03 MPa preload Pressure module at + 50 ° C DIN 45673-7 0.13 MPa Stat .: 0.01-0.04 MPa 0.26 to 0.47 MPa Dyn .: 5-30 Hz 0.03 MPa preload Glass transition temperature (DMTA) ASTM D 4065 IEC 61006 - 30 ° C DTMA "dual cantilever" test at 1 Hz, + 2 ° C / min size test specimen 10x15x60 mm tear strength ASTM D 3574 / F > 10 N / cm Compression set after 7 days at + 23 ° C (50%) ISO 1856 B <5 %

Brauchbar sind auch Polyurethanplatten mit folgenden mechanischen Eigenschaften: Eigenschaften Norm Wert Einheit Anmerkungen Zugfestigkeit ISO 1798 > 0,4 MPa Bruchdehnung ISO 1798 > 200 % Stat. Druckmodul bei +23°C DIN 45673-7 0,06 MPa 0,005-0,02 MPa 0,06 MPa 0,01-0,04 MPa Dyn. Druckmodul bei +23°C DIN 45673-7 0,21-0,29 MPa 5-30 Hz bei 0,02 MPa Vorlast Verlustfaktor (Tangens Delta) DIN 45673-7 0,4 - 5-30 Hz bei 0,02 MPa Vorlast Glasübergangstemperatur (DMTA) ASTM D 4065 IEC 61006 - 30 °C DMTA "dual cantilever"-Test bei 1 Hz, +2°C/min Größe Prüfmuster 10x15x60 mm Reißfestigkeit ASTM D 3574/F > 10 N/cm Druckverformungsrest nach 7 Tagen bei +23°C (50%) ISO 1856 B < 5 % Also suitable are polyurethane plates with the following mechanical properties: properties standard value unit Remarks tensile strenght ISO 1798 > 0.4 MPa elongation ISO 1798 > 200 % Stat. Pressure module at + 23 ° C DIN 45673-7 0.06 MPa 0.005-0.02 MPa 0.06 MPa 0.01-0.04 MPa Dyn. Pressure module at + 23 ° C DIN 45673-7 0.21 to 0.29 MPa 5-30 Hz at 0.02 MPa preload Loss factor (tangent delta) DIN 45673-7 0.4 - 5-30 Hz at 0.02 MPa preload Glass transition temperature (DMTA) ASTM D 4065 IEC 61006 - 30 ° C DMTA "dual cantilever" test at 1 Hz, + 2 ° C / min size test specimen 10x15x60 mm tear strength ASTM D 3574 / F > 10 N / cm Compression set after 7 days at + 23 ° C (50%) ISO 1856 B <5 %

Solche Platten werden mit Lochungen hergestellt, wobei vorzugsweise die so hergestellte Matte mit einer Gießhaut versehen ist. Die Abmessungen der Polyurethanmatte liegen in dem Bereich der Abmessungen der Gleisbettmatten aus Gummi-Recyclingmaterial, jedoch mit einer Tendenz zu dünneren Stegwänden.Such plates are produced with perforations, wherein preferably the mat thus produced is provided with a casting skin. The dimensions of the polyurethane mat are in the range of dimensions of track mat mats of recycled rubber material but with a tendency to thinner web walls.

Claims (9)

  1. A railway superstructure comprising: a track support system (5, 6, 9), rails (1) mounted thereon and an elastic track bed mat (10) forming a continuous base of the track support system, wherein the elastic track bed mat (10) consists of polyurethane-bound rubber material,
    characterized by the combination of the following characteristics:
    a) the track bed mat (10) consists of rubber recycling material,
    b) the track bed mat (10) has a mat thickness in the range between 10 and 50 mm,
    c) the track bed mat (10) features holes (11) that extend transverse to the mat plane and are distributed over the mat surface,
    d) the diameter of the holes (11) lies in the range between 5 and 30 mm,
    e) the holes (11) amount to a volume fraction between 10 and 40% of the mat volume, and
    f) the material of the track bed mat (10) has a density in the range between 360 and 700 kg/m3.
  2. The railway superstructure according to claim 1,
    characterized in that the track bed mat (10) is composed of individual consecutively arranged plates.
  3. The railway superstructure according to claim 2, characterized in that the plates have longitudinal dimensions in the range between 1000 and 2000 mm and lateral dimensions in the range between 500 and 1000 mm.
  4. The railway superstructure according to claim 2 or 3, characterized in that two layers of plates are provided, the joints of which do not overlap.
  5. The railway superstructure according to one of claims 1-4, characterized in that the track bed mat (10) extends over the full length and width of the track bed.
  6. The railway superstructure according to claim 1, characterized in that the recycling material contains rubber fibers that have a length in the range between 1 and 20 mm and amount to a weight proportion of the mat material in the range between at least 20% and up to 90%.
  7. The railway superstructure according to claim 1, characterized in that the recycling material contains rubber granulates that have a grain size in the range between 1 and 5 mm and amount to a weight proportion of the material of the track bed mat (10) in the range between 0% and 60%.
  8. The railway superstructure according to claim 6, characterized in that the rubber fibers used have lengths T2 = 1 to 5 mm and T3 = 8 to 20 mm.
  9. The railway superstructure according to claim 1, characterized in that the polyurethane has a weight proportion in the range between 3 and 15%.
EP11703592.3A 2010-02-02 2011-02-02 Track bed mat for a railway superstructure Active EP2531652B1 (en)

Priority Applications (2)

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PL11703592T PL2531652T3 (en) 2010-02-02 2011-02-02 Track bed mat for a railway superstructure
EP15192311.7A EP3002368B1 (en) 2010-02-02 2011-02-02 Railway superstructure with track bed mat

Applications Claiming Priority (2)

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DE202010001748U DE202010001748U1 (en) 2010-02-02 2010-02-02 Trackbed mat for a railway superstructure
PCT/EP2011/000463 WO2011095325A1 (en) 2010-02-02 2011-02-02 Track bed mat for a railway superstructure

Related Child Applications (1)

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EP15192311.7A Division EP3002368B1 (en) 2010-02-02 2011-02-02 Railway superstructure with track bed mat

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EP2531652A1 EP2531652A1 (en) 2012-12-12
EP2531652B1 true EP2531652B1 (en) 2015-11-25

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DE (1) DE202010001748U1 (en)
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Publication number Priority date Publication date Assignee Title
EP4335963A1 (en) * 2022-09-07 2024-03-13 Getzner Werkstoffe Holding GmbH Sleeper sole

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Publication number Priority date Publication date Assignee Title
CN111395061B (en) * 2020-03-24 2021-11-09 中铁二院工程集团有限责任公司 Light roadbed structure of underpass operation bridge, design and construction method

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JPS52147809A (en) * 1976-06-04 1977-12-08 Japanese National Railways<Jnr> Vibration-proof track member laminated with elasticity adjusting plate
JPS54153407A (en) * 1978-05-24 1979-12-03 Japanese National Railways<Jnr> Vibration-proof rail employing perforated foamed board
DE19706708C2 (en) * 1997-02-20 1999-05-20 Contitech Holding Gmbh Device for soundproofing a solid carriageway
DE19753328A1 (en) 1997-12-02 1999-07-01 Sedra Asphalt Technik Biebrich Resilient mat for railway superstructure
DE19952803C2 (en) 1999-11-02 2002-01-24 Heitkamp Deilmann Haniel Gmbh Superstructure for rail-bound public transport vehicles and method and device for its manufacture
BE1014044A3 (en) * 2001-03-07 2003-03-04 Cogifer Tf Sociutu Anonyme VIBRATORY ISOLATION SYSTEM FOR RAILWAYS.
DE102006013851A1 (en) 2006-03-23 2007-09-27 Db Netz Ag Method for vibration damping of rail track onto an elastomer base layer and with ballast layers between elastomer layers
EP2014831A1 (en) * 2007-07-12 2009-01-14 Feronia S.A. Prefabricated module for a railway and method for manufacturing this module

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Publication number Priority date Publication date Assignee Title
EP4335963A1 (en) * 2022-09-07 2024-03-13 Getzner Werkstoffe Holding GmbH Sleeper sole

Also Published As

Publication number Publication date
EP3002368B1 (en) 2017-03-15
EP2531652A1 (en) 2012-12-12
DE202010001748U1 (en) 2011-06-09
PL3002368T3 (en) 2017-08-31
EP3002368A1 (en) 2016-04-06
PL2531652T3 (en) 2016-06-30
WO2011095325A1 (en) 2011-08-11

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