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Railway sleeper

A sleeper and track technology, applied in the field of track sleepers, can solve the problem that the attenuation of mechanical vibration is not completely satisfactory

Inactive Publication Date: 2008-04-23
ALSTOM TRANSPORT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] [10] However, the currently known attenuation of mechanical vibrations when a train passes over such a track system is not entirely satisfactory.

Method used

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Examples

Experimental program
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Embodiment Construction

[0030] [30] The track section 2 in the first embodiment of the present invention is schematically shown in FIG. 1 . The track section 2 comprises two longitudinal rails 4 fastened to sleepers 8 . The sleeper 8 comprises a single concrete block 9 and two elastic support elements 10 arranged between each track 4 and the concrete block 9 .

[0031] [31] By convention, the longitudinal rail 4 is determined to be used as a reference for the longitudinal direction.

[0032] [32] The elastic support element 10 is substantially in the form of a cuboid. In the embodiment shown in FIG. 1 , their width is substantially equal to the width of the base of the track 4 and their length is substantially equal to the width of the block 9 .

[0033] [33] The elastic support elements 10 are received in respective grooves 12 in the block 9 . The profile of each groove 12 in the sectional view is substantially rectangular. The width and length of each groove 12 are substantially equal to the co...

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Abstract

The rail track tie including: a rigid block presenting a bottom face, and a top face for receiving at least one longitudinal rail; a cover for receiving the rigid block and in the form of a rigid shell including a bottom and a peripheral rim around the bottom; and a resilient soleplate disposed between the bottom face of the rigid block and the bottom of the cover. The resilient soleplate has dynamic stiffness k2 lying in the range of 6 kN / mm to 10 kN / mm, and preferably in the range of 6 kN / mm to 8 kN / mm.

Description

technical field [0001] [01] The present invention relates to a rail sleeper (also known as a "sleeper"), a type of rail sleeper comprising: [0002] [02] - a rigid block having a bottom surface and a top surface for receiving at least one longitudinal rail; [0003] [03] - A casing for receiving said rigid mass, in the form of a rigid shell comprising a base and a perimeter frame surrounding said base; and [0004] [04] - An elastic backing plate arranged between the bottom surface of said rigid block and the bottom of said casing. Background technique [0005] [05] Such sleepers are often used for laying tracks without ballast, for example in or on structures such as tunnels or viaducts, where the sleepers are supported by roadbeds or slabs. [0006] [06] EP-A-0 919 666 describes a sleeper of this type. The rigid casing is embedded in the concrete slab and together with it forms a rigid unit. [0007] [07] Each track typically rests on elastic support elements arranged ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B3/00
CPCE01B3/44E01B3/40E01B1/005E01B9/68E01B2204/01
Inventor M·吉拉尔迪C·珀蒂F·勒科尔I·罗伯特森
Owner ALSTOM TRANSPORT SA
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