Classifications

• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
  • E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
  • E01B3/46—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from different materials
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04B—KNITTING
  • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
  • D04B21/10—Open-work fabrics
  • D04B21/12—Open-work fabrics characterised by thread material
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2403/00—Details of fabric structure established in the fabric forming process
  • D10B2403/02—Cross-sectional features
  • D10B2403/021—Lofty fabric with equidistantly spaced front and back plies, e.g. spacer fabrics
  • D10B2403/0213—Lofty fabric with equidistantly spaced front and back plies, e.g. spacer fabrics with apertures, e.g. with one or more mesh fabric plies
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2505/00—Industrial
  • D10B2505/02—Reinforcing materials; Prepregs
• • 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 sleeper, which has a concrete body with a sill sole attached to this, wherein for shear strength connection of the sill with the concrete body, a connecting layer is provided which is connected on the one hand with the sill and on the other hand with the concrete body and this partially in the Concrete is embedded in the concrete body.
• existing sleepers for railway sleepers are used in particular for vibration protection and ballast bed protection for concrete sleepers.
• the transverse forces that occur must be able to be absorbed.
• a railway sleeper of the type mentioned at the beginning is disclosed in EP 1 298 252 A2.
• the sill sole is connected to the concrete body of the railway sleeper via a connecting layer which is formed by a random fiber layer, in particular a nonwoven layer. Fibers of the random fiber layer are on the one hand embedded in the concrete of the concrete body in its near-surface underside region and on the other hand embedded in the material of the Schwellensohle or welded to it.
• EP 1 445 378 A2 and WO 2009/108972 A1 also disclose concrete sleepers for railway tracks which have a sill bottom on their underside.
• a fiber layer is arranged, which is integrated in both the concrete and in the plastic layer of the sole.
• connection layers Due to the partially embedded in the concrete three-dimensional structure of these known connection layers, the permanent, tear-resistant and shear-resistant connection between the concrete body of the railway sleeper and the threshold sole is improved.
• the previously known nonwoven fabric layers in particular needled layers or confused, formed connecting layers, however, have disadvantages in various respects.
• the three-dimensional expression of nonwovens is limited, which leads in particular to problems if at the boundary layer of the concrete body a pronounced layer of cement slurry
• the object of the invention is to provide a contrast improved soled concrete sleeper. According to the invention, this is achieved by a railway sleeper with the features of claim 1.
• the sill sole is connected to the concrete body via a connecting layer, which is formed by a spacer knit. Such comprises two knitted layers (these are also referred to as goods surfaces), which are held apart by connecting threads. The first of these layers is embedded in the concrete of the concrete body.
• the second layer is embedded in an advantageous embodiment of the invention in the material of the Schwellensohle.
• the second layer is not embedded in the material of the threshold sole, but integrally connected to the outer surface of the sill sole.
• Such a cohesive connection can be formed, for example, by bringing the second layer to the surface of the reaction vessel. mischs, which forms the Schwellensohle after curing, is pressed. Upon curing of the reaction mixture, it then comes to stoffschiüssigen compound.
• Another possibility is that the second layer is glued to the threshold sole after its curing or thermally welded.
• the two knitted layers may have different patterns from each other and / or be formed by differently shaped threads.
• the connection of the first layer to the concrete body and the connection of the second layer to the threshold sole can thereby be optimized.
• FIG. 1 is a schematic representation of a railway sleeper according to the invention
• Fig. 2 is a schematic three-dimensional representation of a portion of a railway sleeper according to the invention
• Fig. 1 shows a schematic representation of a railway sleeper 1 in the form of a concrete sleeper, comprising a concrete body 2 and attached to the underside of the soleplate 3.
• the railway sleeper 1 rests on a gravel bed 4 indicated in FIG.
• the spaced apart in the ballast bed track sleepers 1 carry a track, of which in Fig. 1, a rail 5 is indicated in dashed lines.
• the attachment of the rail 5 to the railway sleeper 1 is not shown here.
• Between the rail 5 and the railway sleeper 1 may be arranged a layer of an elastic material.
• the concrete body 2 is made of reinforced concrete. This may be a "late scraper” where de-scaling takes place when the concrete has hardened or an “early scraper” which can already be disengaged before the concrete hardens.
• the concrete body 2 can be designed as prestressed concrete.
• the Schwellensohle 3 consists of an elastic plastic. Preferred is a
• the sill sole 3 preferably covers only the underside of the concrete body 2.
• the connecting layer 6 is in this case embedded in the concrete of the concrete body 2 over part of its thickness d.
• the connection layer 6 is embedded in the material of the threshold sole 3 over another part of its thickness d.
• Fig. 1 it is indicated that the embedding of the connecting layer 6 in the concrete body 2 and in the Schwellensohle 3 total amount of the total thickness d of the connecting layer 6.
• the connecting layer 6 in an area which lies within the extent of the connecting layer 6, there is an interface between concrete of the concrete body 2 and material of the threshold sole 3.
• the embedding of the connecting layer 6 in the concrete body 2 takes place during the production of the concrete body 2, before the concrete of the concrete body 2 has hardened.
• the non-positive connection with the concrete body 2. It comes here to positive connections between the connecting layer 6 and the concrete body 2 with respect to the transverse direction 7 of the railway sleeper 1.
• the connecting layer 6 is embedded in the concrete body 2, this is preferably already connected to the Schwellensohle 3.
• the Schwellensohle 3 could be inserted with the directed into the mold cavity connecting layer 6 even before pouring the threshold in the mold cavity or applied to this, so that the mold cavity is limited by the Schwellensohle with its attached connection layer 6, whereupon the poured concrete becomes.
• the embedding of the connecting layer 6 in the material of the Schwellensohle 3 takes place before the plastic of the Schwellensohle 3 is cured.
• the connecting layer 6 is pressed correspondingly far into the reaction mixture, which forms the Schwellensohle 3 after curing.
• the connecting layer 6 could also be applied to the surface of the threshold sole 3 conclusively, for example by bonding and / or thermal welding be connected.
• a cohesive connection can take place after the material of the swell base 3 has already hardened.
• a cohesive connection can be achieved in that the connecting layer 6 is applied to the surface of the surface of the material of the swelling sole 3, wherein upon curing of the material of the swell sole 3, the cohesive connection is made.
• the bonding layer 6 can be embedded in the material of the concrete body 2 over its entire thickness d, so that apart from its surface sections on which it cohesively engages with the sill bottom 3 is completely embedded in the material of the concrete body 2, so apart from these surfaces is completely surrounded by the material of the concrete body 2.
• the bond between the concrete body 2 and the sleeper sole 3 advantageously already takes place at the factory, so that no work is required on the construction site in this respect.
• the formation of the connecting layer 6 is shown schematically in FIGS. 2 and 3.
• the connecting layer 6 is formed by a spacer knitted fabric. This comprises first and second knitted layers 9, 10, which are held by connecting threads 1 1 at a mutual distance.
• the first and second layers 9, 10 are also referred to as goods areas in such spacer fabrics.
• the connecting threads 11 and the threads from which the first and second layers 9, 10 are knitted are each because own, so different threads.
• the connecting threads 11 are then referred to as pile threads.
• the patterns of the first and second knitted layers are indicated schematically in Figs. 2 and 3 by hexagons. It is thereby indicated holes, which the first and second layers 9; 10 may have.
• first layer 9 and second layer 10 are possible, but advantageously at least the embedded in the concrete of the concrete body 2 first layer 9 holes, preferably with clear widths of at least 3mm, to the embedding in the concrete of the concrete body. 2 to facilitate.
• the second layer 10 is embedded in the material of the sill 3, it advantageously also has holes, preferably with clear widths of at least 3 mm, in order to facilitate its embedding in the material of the sill 3.
• the second layer 10 may also be knit relatively tightly without pronounced holes.
• the first layer 9 lies in a first plane 12 and the second layer 10 lies in a second plane 13, wherein the two planes 12, 13 are parallel to each other and spaced from each other.
• the patterns of the first layer 9 and the second layer 10 may differ in order to adapt the layers to the respective requirements.
• the threads constituting the first layer 9 and the second layer 10 may be the same or may be differently shaped to suit the respective requirements.
• the number and arrangement of the connecting threads 1 1 can be adapted to the specific requirements.
• One possible embodiment of the connecting threads 1 1 provides that they consist of a monofilament thread. But training from a yarn is conceivable and possible.
• the threads of the first layer 9 and second layer 10 can be formed by onofil threads and / or yarns, for example in the form of threads.
• the connecting threads 1 1 and / or the threads of the first layer and / or the threads of the second layer may for example consist of polyamide, polypropylene, PVC, polyethylene or combinations thereof, optionally also in combination with other materials.
• the production of a spacer knitted fabric usually takes place in a single production step.
• the warp-knit first layer or for the warp-knit second layer for example, the body, tricot or cloth weave can be used.
• the thickness of the spacer fabric is defined by the distance between the two needle bars to each other.
• the thickness d of the spacer fabric is favorably in the range of 1, 5mm to 40mm, with a thickness in the range of 2mm to 20mm is preferred.
• the second layer 10 directed towards the reaction mixture is pressed into the reaction mixture.
• part of the connecting threads 11 and the first layer 9 are still protruding from the reaction mixture.
• the impressions in the reaction mixture are preferably carried out in a predetermined depth, wherein below the depressed second layer 10, a layer of reaction mixture is still present. It is also conceivable and possible, however, to compress the second layer 10 over the entire depth of the reaction mixture into it.
• the second layer 10 is merely pressed against the reaction mixture of the threshold sole 3, whereupon, when the reaction mixture of the threshold sole 3 hardens, a material bond occurs.
• the second layer 10 can be adhered to the threshold sole 3 after curing of the reaction mixture.
• the embedding of the first layer 9 in the concrete of the concrete body 2 is advantageously carried out after the second layer 10 has already been joined to the threshold sole 3.
• the connecting threads 1 1 can extend at different angles to the first and second layers 9, 10.
• the connecting threads 1 1 cross-shaped between the first and second layers, preferably with crossing angles of approximately 45 ° to lay.
• Such a training can be used, for example.
• Abstandergwirke are also known in which threads that are used to form the first and / or second layer 9, 10, are also used to form the connecting threads 11. There are thus no separate pile threads available.
• Such a configuration of the spacer knitted fabric can also be used.
• the thickness of the threshold sole 3 is preferably in the range of 4mm to 20mm.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Textile Engineering (AREA)
• Road Paving Structures (AREA)
• Railway Tracks (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (6)

Cited By (7)

Families Citing this family (5)

Citations (8)

• 2011
  • 2011-04-15 AT ATA534/2011A patent/AT510835B1/de not_active IP Right Cessation
• 2012
  • 2012-03-13 DK DK12714922.7T patent/DK2697430T3/en active
  • 2012-03-13 WO PCT/AT2012/000063 patent/WO2012139142A1/de not_active Ceased
  • 2012-03-13 ES ES12714922.7T patent/ES2546434T3/es active Active
  • 2012-03-13 PL PL12714922T patent/PL2697430T3/pl unknown
  • 2012-03-13 EP EP12714922.7A patent/EP2697430B1/de active Active

Patent Citations (8)

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