Classifications

• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
  • E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
  • E01B19/003—Means for reducing the development or propagation of noise
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
  • E01B21/00—Track superstructure adapted for tramways in paved streets
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
  • E01B21/00—Track superstructure adapted for tramways in paved streets
  • E01B21/02—Special supporting means; Draining of rails
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
  • E01B2204/00—Characteristics of the track and its foundations
  • E01B2204/11—Embedded tracks, using prefab elements or injecting or pouring a curable material
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
  • E01C9/00—Special pavings; Pavings for special parts of roads or airfields
  • E01C9/04—Pavings for railroad level-crossings

Definitions

• the present invention relates to a device adapted to achieve a seal along a rail buried in a substrate.
• the invention also relates to a method of implementing such a seal.
• the rails For certain vehicles running on rail, in particular trams, the rails must not constitute an obstacle for a pedestrian or automobile traffic which circulates on the same platform as that used by the rail vehicle. This is particularly the case when this platform is a road pavement shared by a tramway.
• the rails are then generally provided buried in a substrate of this platform, so as to be flush with the platform.
• the rail is preferably provided isolated from the substrate by a system of splints.
• the splints provide sound insulation, electrical insulation and sealing around the rail vis-à-vis its environment. However, it must be ensured that moisture does not penetrate, or little, between a coating of this platform and the rail.
• the coating is generally asphalt, in other words an asphalt concrete; the coating may also be concrete or pavers.
• the document FR 2 947 285 proposes to produce lateral splints which may comprise, in particular, an upper breakable portion along a break line running through the lateral face, the strip extending on either side of said break line. .
• the breakable portion is removed, creating a groove that is filled with an in-situ cast seal, preferably a two-component polyurethane seal.
• an in-situ cast seal preferably a two-component polyurethane seal.
• this seal is put in place when all trackwork and pavement work are completed;
• the splint can be subjected several months and sometimes several years to bad weather and traffic, before the establishment of the joint.
• the invention aims to provide a fast and economical device for sealing between the rail and the deck of the platform.
• such a device is a splinting device for a rolling stock rail, in particular a tramway rail, constituted by a side splice whose upper face comprises a protection strip.
• the band is advantageously bonded, preferably by welding, to an upper face of a matrix of the splint, a matrix whose material may be chosen from a polyethylene foam, a polyurethane foam, a polypropylene foam and a rubber.
• the strip is preferably formed of a lattice and a sheet glued together, preferably by welding.
• the sheet may be a sheet of polyethylene (PE) or polyethylene terephthalate (PET).
• PET polyethylene terephthalate
• the mesh may consist of polypropylene, polyethylene, fiberglass or polyamide yarns.
• the splint may comprise one or more chamfers between its upper face and a lateral face intended to come into contact with the rail.
• a method for sealing along a rail buried in a substrate comprises the following steps:
• this method comprises an additional step for the implementation of a seal along the rail, between the strip and the rail, in a groove formed by a chamfer of the splice.
• FIG. 1 is a schematic perspective view in section of a tramway rail and different neighboring elements provided for the realization of a seal according to the invention along the rail;
• FIG. 2 is a partial view in perspective of a splint according to the invention.
• the rail is assumed to be laid horizontally.
• the terms “horizontal” and “vertical” refer to such a position. This does not exclude that the rail can be placed with a slope or with a non-zero slope, without departing from the scope of the invention.
• Figure 1 shows in perspective and schematically a rail 1 and elements of its environment.
• the various elements and the rail are shown in section and offset longitudinally relative to each other, for a better readability of Figure 1.
• the rail is shown as intended to be laid buried and flush with a platform 2.
• the platform is mainly composed of three layers 3-5 superimposed.
• a second layer 4 composed of fine gravel covers the first layer 3;
• the third layer 5 is a mix.
• the rail 1 is a tramway rail whose current cross-section is Y-shaped. It comprises a horizontal flange 1 1, a vertical core 12, a rolling portion 13 and a guiding portion 14.
• the flange 11 extends symmetrically from the base of the core 12, the rolling and guiding portions extend from an upper portion of the core 12, upwards, so that these portions form between them a groove 15. In their high parts , the rolling and guiding portions are substantially flush with the platform 2.
• the rolling portion 13 is provided to serve as a support for the tread 18 of a tram wheel.
• the groove 15 is provided to receive the sidewall of the wheel and ensure its lateral guidance.
• the rail is mounted inside of fishplates 20-22, a lower fishplate 20 and two lateral fishplates 21, 22.
• the fishplates are made of plastic foam, preferably a polyethylene foam.
• the splints are designed to absorb vibration due to the rolling of the trams on the rail 1 and prevent their transmission to the nearby environment, including neighboring buildings. In addition, they must provide a watertight seal between the rail 1 and the rest 3, 4 of the platform so that the rail 1 is protected from stray currents.
• the lower splint 20 is designed to wrap the sole 11 and the bottom of the core 12.
• a first side splint 21 is designed to come to fit on the lower splint 20, an inner face of this splice coming to marry the rail on the side of its rolling portion 13.
• the second side splint 22 is designed to fit on the lower splice 20, a face internal of this splice coming to marry the rail 1 on the side of its guide portion 14.
• the side splints are provided to be mounted substantially flush with the platform 2 and the rail 1.
• each side splint 21,22 comprises, on an upper face 25, a protective strip 26.
• the protective strip is provided to protect the corresponding splint assaults due:
• FIG. 2 represents an upper part of the first lateral splint 21.
• the splint 21 comprises a stack of matrix layers 27 and lattices 28.
• a lattice 28 is interposed between each pair of neighboring layers, glued together. This mesh is intended to reduce the coefficient of shrinkage, particularly longitudinally, of the splint.
• the protective strip 26 is made from a sheet 31 and a mesh 32 bonded together.
• the sheet 31 can be, for example, polyethylene (PE) or polyethylene terephthalate (PET).
• the mesh 32 may be, for example, polypropylene, polyethylene, fiberglass or polyamide.
• the matrix 27 of the splint is a plastic foam, for example a foam of polyethylene, preferably, the sheet and the mesh are chosen to be easily welded together and with the matrix 27, in particular the upper face 25 of the upper layer of the matrix 27.
• the mesh is arranged so that its yarns chains are arranged longitudinally, that is to say substantially parallel to the rail, when the splice is in its position of use, and its weft son are arranged transversely.
• the band 26 is bonded to the upper face 25 of the upper matrix layer 27.
• the strip is cut substantially at the width of the upper face 25 of the upper matrix layer 27.
• the strip is arranged so that its mesh 32 is located between the upper face 25 of the matrix 27 and the sheet 31. The mesh reinforces the band, so that it resists the tangential forces that can be exerted by the bearing of vehicles on the tape.
• a chamfer 35 is made between the upper face 25 of the splice and a side face 37 intended to come into contact with the rail 1.
• the chamfer 35 is provided to form, with the rail 1, a groove in which a seal 36 is cast to ensure a continuity of sealing between the rail 1 and the protective strip 26.
• This seal 36 may be, for example, polyurethane, bitumen or a resin synthetic.
• the splints can be wood or rubber. Unlike what is illustrated in Figure 1, it may not be expected to third layer, asphalt, but the second layer, composed of fine grained and for example coated with cement, may come flush with the upper face of a respective side splint.
• a side splint according to the invention may not include a chamfer, that is to say that there is no seal between the splice and the rail, but that a seal deemed sufficient is achieved by the plating of the splice against the rail, together with the sealing strip on the upper face of the splint.
• This provision can be chosen according to the operating conditions and, in particular, the climate of the place where it is located.
• a splint according to the invention is particularly advantageous, since it allows to achieve a seal and protection at the same time as the splice, without waiting for the completion of the construction site of the railway. Thus, the splice bearing its own protection, is protected throughout this site, including the movement of construction equipment.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Road Paving Structures (AREA)
• Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
• Laminated Bodies (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=51862367

Family Applications (1)

Country Status (6)

Families Citing this family (2)

Family Cites Families (13)

• 2014
  • 2014-03-06 FR FR1451821A patent/FR3018288A1/fr not_active Withdrawn
• 2015
  • 2015-02-26 US US15/121,526 patent/US10113272B2/en active Active
  • 2015-02-26 EP EP15715333.9A patent/EP3114281B1/de active Active
  • 2015-02-26 WO PCT/FR2015/050459 patent/WO2015132507A1/fr active Application Filing
  • 2015-02-26 ES ES15715333.9T patent/ES2689569T3/es active Active
• 2016
  • 2016-08-22 IL IL247420A patent/IL247420B/en active IP Right Grant

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