DE202007018656U1 - Embedded gravel superstructure - Google Patents

Abstract

contraption for effective and material-saving erection of the superstructure of Track systems for Rail-bound vehicles with a gravel superstructure (1) with on Sleepers mounted rails and a ballast track (1) have supporting substructure (5), characterized in that in Area of the lowest gravel superstructure material at least one elastomer layer (4) and / or at least one geotextile and / or at least one not rotatable wire mesh both laterally from the gravel material layers (2) is led out and the material layers (2) laterally bordered, and in front and the back of the material layers, making a series of together assembled elastomer layer (4) and / or wire mesh and / or geotextile cages formed being, the cages only open to the top.

Description

The The invention relates to a device for effective and material-saving Building an anti-vibration Track superstructures of track systems for rail-bound vehicles, in particular railways. such Track systems usually have one Superstructure, which has rails mounted on sleepers and a the superstructure bearing substructure.

at conventional track systems, the superstructure is usually from a bed formed from loose gravel, in which the sleepers with the rails lie. This superstructure is carried by a substructure, which at overground routes i. d. R. is formed from soil. in this connection it can be cross-country Layers, cuts or dams act. The storage of the track grid in a bed of loose gravel can be characterize as "floating". Track rust and gravel bed act like a big spring when overrolled. Also, a substructure of soil has a springy effect of dependent on its rigidity is.

It It is therefore an object of the invention to provide a device with which the disadvantages of the prior art are eliminated and in particular a cost-effective shock protection guaranteed with low tuning frequencies whose construction is possible is realized effectively and material-saving.

These The object is in connection with the preamble of claim 1 according to the invention the features specified in claim 1 solved.

According to the invention is in Area of the lowest gravel superstructure material at least one elastomer layer and / or at least one geotextile and / or at least one not rotatable wire grid laterally from the gravel material layers led out whereby the material layers are bordered laterally. The elastomer layer is placed in particular directly on the Erdplanum. By the high mass of the material layers of the ballast track, in conjunction with the elastic properties of the elastomer layer or the Geotextile, becomes a vibration-reducing Effect achieved.

The vibration-reducing Effect is based in particular on a vibration insulation, in the elastomeric layer impinges on them due to a discontinuity the density and / or rigidity of the elastomer layer and the density and / or rigidity of the substructure or of the different material layers reflected.

Farther become the dynamic forces reduced overall in the system. This is achieved through a better Load distribution on the ground (extension of the bending line).

The laterally led out and the layers of material laterally enclosing wire mesh and / or geotextile also grips the material layers at the front and at the back, so that a Wireframe and / or a Geotextilkäfig arises, the only after is open at the top. In the mesh of the wire mesh, gravel or other coarse grained Material and is held by the wire material. This leads particularly advantageous to stabilize the directly adjacent material layers.

The Use of the cage-like Structures advantageously prevents the flow of material layers high dynamics, d. H. high dynamic loads due to a high Number of passing trains and crossing Trains with high axle loads or even a soft substructure, in which otherwise Gravel could run off to the side.

The cages can prefabricated in an effective way and then before with little effort Place in a row to be mounted together.

Furthermore can by the lateral border of the material layers of the superstructure box-shaped, d. H. without the otherwise required cones and thus only below be designed as wide as above, which compared to conventional construction size Amounts of gravel material can be saved.

Claims 2 to 3 include advantageous embodiments the solution of the invention Claim 1.

• – mehrere Materialschichten und insbesondere ein ganzer Hang eines Bahndammes als Dämm- und/oder Dämpfungsmaßnahme verwendet werden kann,
• – die erfindungsgemäße Vorrichtung zur Verminderung von Erschütterungen auch zur Stabilisierung eines Bahndammes verwendet werden kann,
• – größere Dicken der Materialschichten und damit größere Massen und tiefere Frequenzen realisiert werden können.

Furthermore, this advantageously achieves that

• A plurality of material layers and in particular a whole slope of a railway embankment can be used as insulation and / or damping measure,
• The device according to the invention can also be used for the stabilization of a railway embankment to reduce shocks,
• - Larger thicknesses of the material layers and thus larger masses and lower frequencies can be realized.

According to claim 2 occurs when using wire mesh cages, the compaction of the ballast material already factory, reducing the effort on site site can be further reduced.

In the same way it is still possible, the upper construction on site, if necessary.

According to claim 3, it is advantageous to insert under the uppermost layer of material of the ballast track Geotextile. this makes possible the enclosure of the lower material layers and leads to a Stabilization of the entire structure.

The invention will be explained in more detail below with reference to an embodiment and two drawings, each with a figure. 1 shows schematically a track system for rail vehicles, which consists of several layers.

In the particularly advantageous embodiment, according to 1 on a highly elastic elastomer layer and / or geotextile layer and / or a wire mesh 4 several layers of material 2 , in particular base layers of crushed stone introduced. The elastomer layer 4 is thereby directly on the substructure / substrate 5 , in particular the Erdplanum, placed and led out laterally and front and rear (not shown) from the material layers, so that the ballast superstructure is encompassed like a cage. This prevents the flow of material layers even at high dynamics. The top layer of material becomes the ballast superstructure 1 built. Due to the high mass of the different layers of material layers 2 and gravel superstructure 1 , combined with the high elasticity of the elastomer layer 4 , a vibration-reducing effect is achieved. To the necessary compression of the material layers 2 on the elastomeric layers 4 can ensure between each material layers 2 and / or on the elastomeric layer 4 a geotextile 3 be inserted. Through the use of elastomer layers 4 with different stiffness and different thicknesses of the material layers 2 a vote of the system is carried out in particular to avoid ceiling resonances in adjacent buildings.

2 shows schematically seen from the side a series of mutually mounted material cages, which can thus be laid very efficiently.

The material cages are as in 1 described constructed.

1

ballasted

2

material layer

3

geotextile

4

elastomer layer and / or geotextile and / or wire mesh

5

Base / substrate

6

rail

Claims (3)

Apparatus for the effective and material-saving erection of the superstructure of track systems for rail-bound vehicles, which comprises a ballast superstructure ( 1 ) with rails mounted on sleepers and one of the ballast superstructures ( 1 ) supporting substructure ( 5 ), characterized in that in the region of the lowest ballast building material at least one elastomer layer ( 4 ) and / or at least one geotextile and / or at least one non-degradable wire mesh both laterally from the gravel material layers ( 2 ) and the material layers ( 2 ) laterally encloses, as well as the front and rear of the material layers encloses, so that a series of mutually mounted elastomer layer ( 4 ) and / or wire mesh and / or geotextile cages is formed, the cages are open only upwards. Device according to claim 1, characterized in that the material layers are compacted in said wire mesh cages are. Device according to at least one of claims 1 and 2, characterized in that below the uppermost layer of material of the ballast track a geotextile ( 3 ) is arranged.