EP3121333B1 - Rail track support - Google Patents

Rail track support Download PDF

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Publication number
EP3121333B1
EP3121333B1 EP16001602.8A EP16001602A EP3121333B1 EP 3121333 B1 EP3121333 B1 EP 3121333B1 EP 16001602 A EP16001602 A EP 16001602A EP 3121333 B1 EP3121333 B1 EP 3121333B1
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EP
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Prior art keywords
concrete beam
rail track
track support
foundation
support according
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EP16001602.8A
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German (de)
French (fr)
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EP3121333A1 (en
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Peter Steinhauser
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Steinhauser Consulting Engineers Zt GmbH
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Steinhauser Consulting Engineers Zt GmbH
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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
    • E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
    • 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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
    • E01B19/003—Means for reducing the development or propagation of noise
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2/00—General structure of permanent way
    • E01B2/003—Arrangement of tracks on bridges or in tunnels
    • 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 vibration-damping Bahngleisauflagerung, the rails resting on sleepers by means of sleepers or ballast slabs on a concrete beam, and a spring means which is disposed below the track between the concrete beam and a foundation, wherein in addition to the spring means between the concrete beam and the foundation shock absorption elements Effect come from viscoelastic material with high loss factor, ie high energy absorption, or consist of hydraulic dampers.
  • the efficiency of the insulation increases as well as the production cost in the order of the types mentioned.
  • the US-A-4,616,395 teaches a track fastening method in which only lower and lateral rubber pads are provided as a support for a track-carrying beam. Shock absorption and suspension provide only these rubber elements, so the adjustability of their effect can not be separated from each other.
  • the EP-A-1 783 275 teaches a floating bed track bed with shock absorbing elements arranged in series with resilient spring means for supporting track-carrying concrete beams on a foundation. Disadvantageous repair work that occurs when the springs or shock absorbers must be replaced separately.
  • the JP-A-2008 303 567 shows a vibration-isolating trackbed with a track-carrying trough resting on stringed spiral spring elements. This solution is very expensive and requires a lot of maintenance.
  • the invention has for its object to provide a material, space and cost-saving Brugleisauflagerung with good vibration isolation.
  • the spring means consists of an elastomer and that the shock absorption elements are arranged next to the spring means on the foundation and adjacent to the concrete beam and act parallel to the spring means.
  • the viscoelastic material is advantageously a porous plastic having a loss factor of about 0.25 to 0.60, preferably 0.40 to 0.50.
  • a partially crystalline PUR elastomer having a high amorphous content is suitably used.
  • the shock-absorbing elements in the form of viscoelastic material and the spring means in the form of an elastomer are both each arranged in strip form alternately side by side between the bottom of the concrete beam and the foundation so as to give a full-surface bearing ,
  • the resilient or shock-absorbing material strips are suitably the same thickness. Different thickness can be achieved by a layer of concrete according to the difference the material thicknesses are compensated.
  • the two strips are preferably applied to a common textile or nonwoven mat.
  • the two stripes may be the same thickness and / or the same width; this also simplifies laying and reduces the cost of producing and processing the strips.
  • a particularly effective vibration isolation is achieved if each consisting of a layer of viscoelastic material and a layer of a spring device representing elastomer existing blocks are arranged as punctiform interlayers at grid intersection points between the concrete beam and the concrete foundation. Also in this embodiment with point or single bearing of the concrete beams carrying the rails, the blocks may be suitably applied to a common textile or nonwoven mat.
  • An embodiment with a particularly effective as shock-absorbing elements hydraulic dampers provides that in the area directly below the track a spring means in the form of a continuous elastic elastomer layer and on both sides arranged in recesses of the concrete beam rows of shock absorption elements in the form of hydraulic dampers are arranged at the bottom of the concrete foundation and At the top, lean against the top of the concrete beam in alignment with these connected steel girders.
  • the steel beams can be integrated in the concrete beams.
  • FIG. 1 a tunnel cross-section with a full-surface superimposed railway track
  • Fig. 2 schematically a full-surface railroad track suspension in a cross-section
  • Fig. 3 the Auflagerung after Fig. 2 in plan view without rails and these supporting concrete beams
  • Fig. 4 schematically a point or Einzelauflagerung a railway track in a cross section
  • Fig. 5 the Auflagerung after Fig. 4 in plan view without rails and with indicated concrete beams
  • Fig. 6 another embodiment of a point or a single Aufauflagerung in the representation as in Fig. 5 .
  • FIG. 7 schematically a further embodiment of a point or individual support in cross-section
  • Fig. 8 the Auflagerung after Fig. 7 in top view without rails
  • Fig. 9 an embodiment with shock absorbers attached to an existing, only resilient Bahngleisauflagerung.
  • Fig. 1 For example, the rails of a railroad track designated 1 are fastened by means of rail fastening 2 on the track plate 3, which is concreted in a longitudinal concrete beam 4, such as reinforced concrete beams.
  • a longitudinal concrete beam 4 such as reinforced concrete beams.
  • the concrete beam 4 is provided on both sides with upstanding cheeks 6, so that itself these cheeks 6 and the absorber plates 5 are at the level of the rail running surface.
  • the concrete beam 4 is supported on the in situ concrete foundation 7 of the tunnel sole via a spring device 8 consisting of elastomeric strip.
  • Fig. 1 illustrated Bahngleisauflagerung the prior art.
  • the invention begins: The areas not covered by the elastomer strips of the spring device 8 on the underside of the concrete beam 4 are covered by strips 10 of viscoelastic material, which form the shock-absorbing elements. If the viscoelastic strips 10 have the same thickness as the elastic strips of the spring device 8, they are arranged side by side between the foundation 7 and the concrete beam 4.
  • the viscoelastic material has a high loss factor of, for example, 0.4.
  • Fig. 2 indicates the rail support Fig. 1 in a schematic cross section
  • Fig. 3 a top view Fig. 2 without concrete beams 4 and rails 1.
  • Fig. 4 is a section through a point- or single-stored track after the line IV-IV in Fig. 5 , which schematically shows the track suspension of Fig. 4 shows in plan view.
  • FIG. 5 Similar plan view of a track suspension of Fig. 6 shows square-shaped block-shaped spring means 8, surrounded by shock-absorbing strips 10.
  • the blocks of the spring means 8 and the surrounding strips 10 are formed as point-shaped intermediate layers at grid intersection points between the concrete beam 4 and the foundation 7.
  • FIGS. 7 and 8 show a track support with a continuous in the area directly below the concrete beam 4 surface storage of the spring device 8 representing elastomer analogous to 4 and 5
  • Fig. 7 is a cross section along the line VII-VII of the plan view of Fig. 8
  • On both sides next to the spring device 8 performing layer are in Recesses of the concrete beam 4 rows of individual shock-absorbing elements 11 arranged in the form of hydraulic dampers, which are supported at the bottom of the foundation 7 and the top of longitudinal steel beams 12, the top of which is aligned with the top of the concrete beam 4 and embedded in the concrete beams 4 and fixedly connected thereto ,
  • Fig. 9 shows an embodiment of the track support in cross section similar Fig. 8 However, with the shock-absorbing elements 11 have been subsequently grown on a equipped only with a spring means 8 in the form of a surface storage Brugleisauflagerung.
  • the invention can improve the vibration isolation of an elastic railroad track pad which, via the correct dimensioning of the natural frequency of the oscillating system, adapted to the local conditions, i. the mass of the track supporting concrete beam including track plate and the rigidity of this supporting spring device goes beyond and avoids the costly point storage.

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

Description

Die Erfindung betrifft eine schwingungsdämmende Bahngleisauflagerung, deren Schienen vermittels Schwellen samt Schotterbett oder Gleistragplatten auf einem Betonbalken ruhen, sowie einer Federeinrichtung, die unterhalb des Gleises zwischen dem Betonbalken und einem Fundament angeordnet ist, wobei zusätzlich zu der Federeinrichtung zwischen dem Betonbalken und dem Fundament Stoßdämpfungselemente zur Wirkung gelangen, die aus viskoelastischem Material mit hohem Verlustfaktor, d.h. hoher Energieabsorption, oder aus Hydraulikdämpfern bestehen.The invention relates to a vibration-damping Bahngleisauflagerung, the rails resting on sleepers by means of sleepers or ballast slabs on a concrete beam, and a spring means which is disposed below the track between the concrete beam and a foundation, wherein in addition to the spring means between the concrete beam and the foundation shock absorption elements Effect come from viscoelastic material with high loss factor, ie high energy absorption, or consist of hydraulic dampers.

Derartige Bahngleisauflagerungen, die vorwiegend in Tunneln zum Vermeiden der Belästigung durch Erschütterungen verwendet werden, haben den Nachteil, daß große Massen des auf dem Ortbeton des Fundamentes federnd abgestützten Betonbalkens eingesetzt werden müssen. Diese sind für eine niedrige Eigenfrequenz der beim Befahren in Schwingung geratenden Masse erforderlich, damit auch niedrige Emissionsfrequenzen gedämpft werden können. Große Massen sind nicht nur aufwendig herzustellen, sondern erfordern auch einen entsprechend großen Tunnelausbruch, der ebenso aufwendig ist.Such Bahngleisauflagerungen, which are mainly used in tunnels to avoid harassment by shocks, have the disadvantage that large masses of resiliently supported on the in-situ concrete of the foundation concrete beam must be used. These are required for a low natural frequency of the vibrating mass when driving, so that even low emission frequencies can be damped. Large masses are not only expensive to produce, but also require a correspondingly large tunnel outbreak, which is just as expensive.

Der Stand der Technik kennt Federeinrichtungen in Form elastischer Flächenlager für den die Schienen tragenden Betonbalken, Streifenlager in Form von längs in Abstand verlaufenden Federeinrichtungen zwischen dem Betonbalken und dem Betonfundament, sowie als Punkt- oder Einzellager ausgebildete Federeinrichtungen, die an Gitterkreuzungspunkten zwischen dem Fundament und der die Schienen tragenden Betonplatte angeordnet sind. Der Wirkungsgrad der Dämmung nimmt ebenso wie der Herstellungsaufwand in der genannten Reihenfolge der Bauarten zu.The prior art known spring means in the form of elastic surface bearing for the rail-carrying concrete beams, strip bearings in the form of longitudinally spaced spring means between the concrete beam and the concrete foundation, as well as point or single bearing spring devices formed at grid intersection points between the foundation and the the rails supporting concrete slab are arranged. The efficiency of the insulation increases as well as the production cost in the order of the types mentioned.

Die US-A-4 616 395 lehrt ein Gleisbefestigungsverfahren, bei welchem als Auflagerung für einen gleistragenden Balken nur untere und seitliche Gummikissen vorgesehen sind. Stoßdämpfung und Federung besorgen nur diese Gummielemente, weswegen die Einstellbarkeit ihrer Wirkung nicht getrennt voneinander erfolgen kann.The US-A-4,616,395 teaches a track fastening method in which only lower and lateral rubber pads are provided as a support for a track-carrying beam. Shock absorption and suspension provide only these rubber elements, so the adjustability of their effect can not be separated from each other.

Die EP-A-1 783 275 lehrt ein Gleisbett mit schwimmender Platte mit Stoßdämpfungselementen, die in Serie zu elastischen Federeinrichtungen zur Auflagerung von die Gleise tragenden Betonbalken auf einem Fundament angeordnet sind. Nachteilig sind aufwendige Reparaturarbeiten, die entstehen, wenn die Federn oder die Stoßdämpfer separat ausgetauscht werden müssen.The EP-A-1 783 275 teaches a floating bed track bed with shock absorbing elements arranged in series with resilient spring means for supporting track-carrying concrete beams on a foundation. Disadvantageous repair work that occurs when the springs or shock absorbers must be replaced separately.

Die JP-A-2008 303 567 zeigt ein vibrationsisolierendes Gleisbett mit einem gleistragenden Trog, der auf aufgereihten Spiralfederelementen ruht. Diese Lösung ist sehr teuer und wartungsaufwendig.The JP-A-2008 303 567 shows a vibration-isolating trackbed with a track-carrying trough resting on stringed spiral spring elements. This solution is very expensive and requires a lot of maintenance.

Die Erfindung liegt die Aufgabe zugrunde, eine material-, raum- und aufwandsparende Bahngleisauflagerung mit guter Schwingungsdämmung bereitzustellen.The invention has for its object to provide a material, space and cost-saving Bahngleisauflagerung with good vibration isolation.

Diese Aufgabe wird durch die schwingungsdämmende Bahngleisauflagerung nach dem Anspruch 1, sowie durch das Verfahren nach dem Anspruch 10 gelöst.This object is achieved by the vibration-damping Bahngleisauflagerung according to claim 1, and by the method according to claim 10.

Sie besteht bei einer Bahngleisauflagerung der eingangs erwähnten Art darin, daß die Federeinrichtung aus einem Elastomer besteht und daß die Stoßdämpfungselemente neben der Federeinrichtung auf dem Fundament und anliegend an dem Betonbalken angeordnet sind und parallel zu der Federeinrichtung wirken.It consists in a Bahngleisauflagerung of the type mentioned is that the spring means consists of an elastomer and that the shock absorption elements are arranged next to the spring means on the foundation and adjacent to the concrete beam and act parallel to the spring means.

Das viskoelastische Material ist vorteilhaft ein poröser Kunststoff mit einem Verlustfaktor von etwa 0,25 bis 0,60, vorzugsweise von 0,40 bis 0,50. Als solches Material wird zweckmäßig ein teilkristallines PUR-Elastomer mit hohem amorphem Anteil eingesetzt.The viscoelastic material is advantageously a porous plastic having a loss factor of about 0.25 to 0.60, preferably 0.40 to 0.50. As such material, a partially crystalline PUR elastomer having a high amorphous content is suitably used.

Bei einer ersten, besonders einfachen Ausführungsform der erfindungsgemäßen Auflagerung sind die stoßdämpfenden Elemente in Form des viskoelastischen Materials und die Federeinrichtung in Form eines Elastomers beide je in Streifenform abwechselnd nebeneinander zwischen der Unterseite des Betonbalkens und dem Fundament so angeordnet sind, daß sie ein vollflächiges Auflager ergeben. Die federnden oder stoßdämpfenden Materialstreifen sind zweckmäßig gleich dick. Unterschiedliche Dicke kann durch eine Aufbetonschicht entsprechend der Differenz der Materialstärken ausgeglichen werden.In a first, particularly simple embodiment of the Auflagerung invention, the shock-absorbing elements in the form of viscoelastic material and the spring means in the form of an elastomer are both each arranged in strip form alternately side by side between the bottom of the concrete beam and the foundation so as to give a full-surface bearing , The resilient or shock-absorbing material strips are suitably the same thickness. Different thickness can be achieved by a layer of concrete according to the difference the material thicknesses are compensated.

Um das Verlegen zu vereinfachen und dabei Fehler zu vermeiden, sind die zweierlei Streifen vorzugsweise auf einer gemeinsamen Textil- oder Vliesmatte aufgebracht. Die zweierlei Streifen können gleich dick und/oder gleich breit sein; auch dies vereinfacht das Verlegen und verbilligt die Herstellung und Verarbeitung der Streifen.To simplify the laying and thereby avoid errors, the two strips are preferably applied to a common textile or nonwoven mat. The two stripes may be the same thickness and / or the same width; this also simplifies laying and reduces the cost of producing and processing the strips.

Eine besonders wirksame Schwingungsdämmung wird erreicht, wenn je aus einer Schicht aus viskoelastischem Material und einer Schicht aus einem die Federeinrichtung darstellenden Elastomer bestehende Blöcke als punktförmige Zwischenlagen an Gitterkreuzungspunkten zwischen dem Betonbalken und dem Betonfundament angeordnet sind. Auch bei dieser Ausführungsform mit Punkt- oder Einzellagerung des die Schienen tragenden Betonbalkens können die Blöcke zweckmäßig auf einer gemeinsamen Textil- oder Vliesmatte aufgebracht sein.A particularly effective vibration isolation is achieved if each consisting of a layer of viscoelastic material and a layer of a spring device representing elastomer existing blocks are arranged as punctiform interlayers at grid intersection points between the concrete beam and the concrete foundation. Also in this embodiment with point or single bearing of the concrete beams carrying the rails, the blocks may be suitably applied to a common textile or nonwoven mat.

Eine Ausführungsform mit als Stoßdämpfungselemente besonders wirksamen Hydraulikdämpfern sieht vor, daß im Bereich direkt unterhalb des Gleises eine Federeinrichtung in Form einer durchgehenden elastischen Elastomerschicht und beidseitig daneben in Ausnehmungen des Betonbalkens angeordnete Reihen von Stoßdämpfungselementen in Form von Hydraulikdämpfern angeordnet sind, die sich unten am Betonfundament und oben an mit der Oberseite des Betonbalkens fluchtend mit dieser verbundenen Stahlträgern abstützen. Die Stahlträger können in den Betonbalken integriert sein.An embodiment with a particularly effective as shock-absorbing elements hydraulic dampers provides that in the area directly below the track a spring means in the form of a continuous elastic elastomer layer and on both sides arranged in recesses of the concrete beam rows of shock absorption elements in the form of hydraulic dampers are arranged at the bottom of the concrete foundation and At the top, lean against the top of the concrete beam in alignment with these connected steel girders. The steel beams can be integrated in the concrete beams.

Es ist im übrigen auch möglich, eine vorhandene Gleisauflagerung, deren die Gleise tragender Betonbalken lediglich mit einer Federeinrichtung abgestützt ist, mit einer zusätzlichen Dämpfung auszustatten, indem auf dem Betonbalken seitlich an beiden Seiten auskragend Stahlträger mit einer mit der Oberseite des Betonbalkens fluchtenden Oberseite angebaut werden, die mit Reihen sich auf dem Fundament abstützender Stoßdämpfungselemente in Form von Hydraulikdämpfern verbunden sind.It is also possible, moreover, to equip an existing track support, the track of which carrying concrete beams is supported only with a spring device, with additional damping by laterally cantilevered on both sides of the concrete beams on a concrete beam with an aligned with the top of the concrete beam top which are connected to rows of shock absorbers supporting the foundation in the form of hydraulic dampers.

Die Erfindung wird anhand in den Zeichnungen dargestellter Ausführungsbeispiele erfindungsgemäßer Bahngleisauflagerungen näher erläutert. In den Zeichnungen zeigen Fig. 1 einen Tunnelquerschnitt mit einem darin vollflächig aufgelagerten Bahngleis, Fig. 2 schematisch eine vollflächige Bahngleisauflagerung in einem Querschnitt, Fig. 3 die Auflagerung nach Fig. 2 in Draufsicht ohne Schienen und diese stützenden Betonbalken, Fig. 4 schematisch eine Punkt- oder Einzelauflagerung eines Bahngleises in einem Querschnitt, Fig. 5 die Auflagerung nach Fig. 4 in Draufsicht ohne Schienen und mit angedeutetem Betonbalken, Fig. 6 eine andere Ausführung einer Punkt- oder Einzelauflagerung in der Darstellung wie in Fig. 5, Fig. 7 schematisch eine weitere Ausführung einer Punkt- oder Einzelauflagerung im Querschnitt, Fig. 8 die Auflagerung nach Fig. 7 in Draufsicht ohne Schienen und Fig. 9 eine Ausführungsform mit Stoßdämpfungseinrichtungen angebaut an eine bestehende, lediglich federelastische Bahngleisauflagerung.The invention will be described with reference to the drawings illustrated embodiments of the present invention Bahngleisauflagerungen explained in more detail. In the drawings show Fig. 1 a tunnel cross-section with a full-surface superimposed railway track, Fig. 2 schematically a full-surface railroad track suspension in a cross-section, Fig. 3 the Auflagerung after Fig. 2 in plan view without rails and these supporting concrete beams, Fig. 4 schematically a point or Einzelauflagerung a railway track in a cross section, Fig. 5 the Auflagerung after Fig. 4 in plan view without rails and with indicated concrete beams, Fig. 6 another embodiment of a point or a single Aufauflagerung in the representation as in Fig. 5 . Fig. 7 schematically a further embodiment of a point or individual support in cross-section, Fig. 8 the Auflagerung after Fig. 7 in top view without rails and Fig. 9 an embodiment with shock absorbers attached to an existing, only resilient Bahngleisauflagerung.

In Fig. 1 sind die mit 1 bezeichneten Schienen eines Bahngleises vermittels Schienenbefestigung 2 auf der Gleistragplatte 3 befestigt, die in einem längsverlaufenden Betonbalken 4, wie etwa Stahlbetonbalken, einbetoniert ist. Die Gleistragplatte 3 dient zur genauen Festlegung des Abstandes der beiden Schienen 1. Auf der Gleistragplatte 3 sitzen der Schalldämmung dienende Absorberplatten 5. Zur Schalldämmung und zum Bereitstellen einer Fahrbahn für Reparatur und Notfälle ist der Betonbalken 4 beidseitig mit hochstehenden Wangen 6 versehen, so daß sich diese Wangen 6 und die Absorberplatten 5 auf dem Niveau der Schienenlauffläche befinden. Der Betonbalken 4 stützt sich auf dem aus Ortbeton bestehenden Fundament 7 der Tunnelsohle über eine Federeinrichtung 8 bestehend aus Elastomerstreifen ab.In Fig. 1 For example, the rails of a railroad track designated 1 are fastened by means of rail fastening 2 on the track plate 3, which is concreted in a longitudinal concrete beam 4, such as reinforced concrete beams. For the sound insulation and to provide a roadway for repairs and emergencies, the concrete beam 4 is provided on both sides with upstanding cheeks 6, so that itself these cheeks 6 and the absorber plates 5 are at the level of the rail running surface. The concrete beam 4 is supported on the in situ concrete foundation 7 of the tunnel sole via a spring device 8 consisting of elastomeric strip.

Da dem Modell des Einmassenschwingers folgend die Gleistragplatte 3 zusammen mit dem Betonbalken (4) die schwingende Masse bildet, wird bei den weiteren Figuren die Masse beider Teile als Betonbalken (4) bezeichnet.Since following the model of the single-weight vibrator, the track plate 3 together with the concrete beam (4) forms the oscillating mass, in the other figures the mass of both parts is referred to as concrete beam (4).

Um den Betonbalken 4 auch seitlich von dem Fundament 7 der Tunnelsohle zu trennen, werden Seitenmatten 9 eingelegt, die eine kraftschlüssige Verbindung zur Tunnelsohle verhindern. Bis hierher entspricht die in Fig. 1 dargestellte Bahngleisauflagerung dem Stand der Technik. Hier setzt nun die Erfindung ein: Die nicht von den Elastomerstreifen der Federeinrichtung 8 abgedeckten Bereiche an der Unterseite des Betonbalkens 4 sind von Streifen 10 aus viskoelastischem Material abgedeckt, welche die Stoßdämpfungselemente bilden. Wenn die viskoelastischen Streifen 10 dieselbe Dicke haben wie die federelastischen Streifen der Federeinrichtung 8, werden sie nebeneinander zwischen dem Fundament 7 und dem Betonbalken 4 angeordnet. Das viskoelastische Material besitzt einen hohen Verlustfaktor von beispielsweise 0,4.To separate the concrete beams 4 also laterally from the foundation 7 of the tunnel sole, side mats 9 are inserted, the prevent a positive connection to the tunnel sole. So far, the in Fig. 1 illustrated Bahngleisauflagerung the prior art. Here is where the invention begins: The areas not covered by the elastomer strips of the spring device 8 on the underside of the concrete beam 4 are covered by strips 10 of viscoelastic material, which form the shock-absorbing elements. If the viscoelastic strips 10 have the same thickness as the elastic strips of the spring device 8, they are arranged side by side between the foundation 7 and the concrete beam 4. The viscoelastic material has a high loss factor of, for example, 0.4.

Wenn es erforderlich ist, für die Elastomerstreifen der Federeinrichtung 8 und die viskoelastischen Streifen 10 unterschiedliche Materialdicken zu verwenden, kann die Differenz durch Aufbetonstreifen einfach ausgeglichen werden.If it is necessary to use different thicknesses of material for the elastomeric strips of the spring device 8 and the viscoelastic strips 10, the difference can be easily compensated by concrete strips.

Fig. 2 zeigt die Schienenauflagerung nach Fig. 1 in einem schematischen Querschnitt, Fig. 3 eine Draufsicht auf Fig. 2 ohne Betonbalken 4 und Schienen 1. Fig. 2 indicates the rail support Fig. 1 in a schematic cross section, Fig. 3 a top view Fig. 2 without concrete beams 4 and rails 1.

Fig. 4 ist ein Schnitt durch ein punkt- bzw. einzelaufgelagertes Gleis nach der Linie IV-IV in Fig. 5, welche schematisch die Gleisauflagerung der Fig. 4 in Draufsicht zeigt. Fig. 4 is a section through a point- or single-stored track after the line IV-IV in Fig. 5 , which schematically shows the track suspension of Fig. 4 shows in plan view.

Die zu Fig. 5 analoge Draufsicht einer Gleisauflagerung der Fig. 6 zeigt quadratisch geformte blockförmige Federeinrichtungen 8, umgeben von stoßdämpfenden Streifen 10. Die Blöcke der Federeinrichtungen 8 und der diese umgebenden Streifen 10 sind als punktförmige Zwischenlagen an Gitterkreuzungspunkten zwischen dem Betonbalken 4 und dem Fundament 7 ausgebildet.The too Fig. 5 Similar plan view of a track suspension of Fig. 6 shows square-shaped block-shaped spring means 8, surrounded by shock-absorbing strips 10. The blocks of the spring means 8 and the surrounding strips 10 are formed as point-shaped intermediate layers at grid intersection points between the concrete beam 4 and the foundation 7.

Die Fig. 7 und 8 zeigen eine Gleisauflagerung mit einem im Bereich direkt unterhalb des Betonbalkens 4 durchgehenden Flächenlager aus dem die Federeinrichtung 8 darstellenden Elastomer analog den Fig. 4 und 5. Fig. 7 ist ein Querschnitt entlang der Linie VII-VII der Draufsicht der Fig. 8. Beidseitig neben der die Federeinrichtung 8 darstellenden Schicht sind in Ausnehmungen des Betonbalkens 4 Reihen einzelner Stoßdämpfungselemente 11 in Form von Hydraulikdämpfern angeordnet, die sich unten am Fundament 7 und oben an längsverlaufenden Stahlträgern 12 abstützen, deren Oberseite mit der Oberseite des Betonbalkens 4 fluchtet und die in den Betonbalken 4 eingelassen und mit diesem fest verbunden sind.The FIGS. 7 and 8 show a track support with a continuous in the area directly below the concrete beam 4 surface storage of the spring device 8 representing elastomer analogous to 4 and 5 , Fig. 7 is a cross section along the line VII-VII of the plan view of Fig. 8 , On both sides next to the spring device 8 performing layer are in Recesses of the concrete beam 4 rows of individual shock-absorbing elements 11 arranged in the form of hydraulic dampers, which are supported at the bottom of the foundation 7 and the top of longitudinal steel beams 12, the top of which is aligned with the top of the concrete beam 4 and embedded in the concrete beams 4 and fixedly connected thereto ,

Fig. 9 zeigt eine Ausführungsform der Gleisauflagerung im Querschnitt ähnlich Fig. 8, wobei jedoch die Stoßdämpfungselemente 11 im Nachhinein an ein nur mit einer Federeinrichtung 8 in Form eines Flächenlagers ausgestattete Bahngleisauflagerung angebaut worden sind. Fig. 9 shows an embodiment of the track support in cross section similar Fig. 8 However, with the shock-absorbing elements 11 have been subsequently grown on a equipped only with a spring means 8 in the form of a surface storage Bahngleisauflagerung.

Seitlich an beiden Seiten des die Schienen 1 tragenden Betonbalkens 4 sind an diesem auskragend Stahlträger 12' befestigt, deren Oberseite mit der Oberseite des Betonbalkens 4 fluchtet und die mit Reihen sich auf dem Fundament 7 abstützender Stoßdämpfungselemente 11 in Form von Hydraulikdämpfern verbunden sind.Laterally on both sides of the rails 1 supporting concrete beam 4 are on this projecting steel beams 12 'attached, the top of which is aligned with the top of the concrete beam 4 and connected to rows on the foundation 7 abstützender shock-absorbing elements 11 in the form of hydraulic dampers.

Die Erfindung kann die Schwingungsdämmung einer elastischen Bahngleisauflagerung verbessern, die über die auf die lokalen Gegebenheiten abgestimmte, richtige Dimensionierung der Eigenfrequenz des schwingenden Systems, d.h. der Masse des das Gleis tragenden Betonbalkens samt Gleistragplatte und der Steifigkeit der diese stützenden Federeinrichtung hinausgeht und die aufwendige Punktlagerung vermeidet.The invention can improve the vibration isolation of an elastic railroad track pad which, via the correct dimensioning of the natural frequency of the oscillating system, adapted to the local conditions, i. the mass of the track supporting concrete beam including track plate and the rigidity of this supporting spring device goes beyond and avoids the costly point storage.

Da bei Schienenbahnen das Verhältnis von Zugüberfahrtsdauer zur nachfolgenden Pausenlänge in der Regel zumindest 1:10 (vorwiegend sogar 1:20) erreicht und 1:5 keinesfalls unterschreitet, wird die bei einem Dämpfungselement erfolgende Energieumwandlung in Wärme kühltechnisch durch die Wärmeleitung des Betons ausreichend beherrscht werden. Eine zusätzliche Wärmeabfuhr über Kühlbleche ist konstruktiv jedoch machbar. Since in railways the ratio of Zugüberfahrtsdauer for subsequent pause length usually at least 1:10 (predominantly even 1:20) reached and 1: 5 by no means falls short, which takes place in a damping element energy conversion into heat cooling technology is sufficiently controlled by the heat conduction of the concrete , An additional heat dissipation via cooling plates is structurally feasible.

Claims (10)

  1. Vibration-damping rail track support, the rails (1) of which rest on a concrete beam (4) by means of sleepers and ballast or track carrier plates (3), and comprising a suspension device (8) which is arranged below the track between the concrete beam (4) and a foundation (7), shock absorption elements (10; 11) operating between the concrete beam (4) and the foundation (7) in addition to the suspension device (8), which elements consist of viscoelastic material having a high dissipation factor, i.e. high energy absorption, or of hydraulic dampers, characterised in that the suspension device (8) consists of an elastomer, and in that the shock absorption elements (10; 11) are arranged alongside the suspension device (8) on the foundation (7) and adjacent to the concrete beam (4), and operate in parallel with the suspension device (8).
  2. Rail track support according to claim 1, characterised in that the viscoelastic material is a plastics foam which has a dissipation factor of approximately 0.25 to 0.60.
  3. Rail track support according to claim 2, characterised in that the plastics foam is a PUR elastomer having a high amorphous fraction.
  4. Rail track support according to any of claims 1 to 3, characterised in that the shock absorption elements (10) in the form of strips of viscoelastic material and the suspension device (8) in the form of an elastomer that is also in strip form are arranged alternately alongside one another between the underside of the concrete beam (4) and the foundation (7) such that they produce a full-surface support.
  5. Rail track support according to claim 4, characterised in that the two kinds of strips are applied to a common textile or non-woven mat.
  6. Rail track support according to any of claims 1 to 3, characterised in that blocks, which each consist of a layer that constitutes the suspension device (8) and is made of a resilient elastomer and consist of the viscoelastic material forming the shock absorption elements (10), are arranged between the concrete beam (4) and the foundation (7) as punctiform intermediate layers at grid intersection points.
  7. Rail track support according to claim 1, characterised in that a continuous layer made up of the elastomer which constitutes the suspension device (8) and rows of shock absorption elements (11) that are adjacent thereto on either side in recesses in the concrete beam (4) and are in the form of hydraulic dampers are arranged in the region directly below the track, which dampers are supported on the foundation (7) underneath and on steel girders (12) above, which are connected to the concrete beam (4).
  8. Rail track support according to claim 7, characterised in that the steel girders (12) are integrated into the concrete beams (4).
  9. Rail track support according to claim 7, characterised in that steel girders (12') connected to the concrete beam (4) are subsequently attached laterally to either side of the concrete beam (4) so as to project therefrom.
  10. Method for producing a rail track support according to claim 9, characterised in that, on a concrete beam (4) of an existing resilient rail track support, which beam carries both rails (1) of the track, steel girders (12') are mounted laterally on either side of the concrete beam (4) so as to be flush with the top of said beam and are each connected to rows of shock absorption elements (11) in the form of hydraulic dampers which are supported on the foundation (7).
EP16001602.8A 2015-07-21 2016-07-21 Rail track support Revoked EP3121333B1 (en)

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ATA485/2015A AT517573A1 (en) 2015-07-21 2015-07-21 Bahngleisauflagerung

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