JP2002105901A - Continuously supporting sleeper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide continuously supporting sleepers which continuously support rails by the sleepers by timbers as much as possible and prevent the sleepers from differential settlement and reduce preventive works for maintenance works and reduce preventive works for maintenance works increasing the lateral resistance of the rails. SOLUTION: This sleepers are continuously laid with every distance and provided with continuously supporting sleepers having sleeper bodies 12 having both arms 12A extending along the rail direction, track pads 14, and rails 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous bearing sleeper.

[0002]

2. Description of the Related Art In conventional ballast tracks, sleepers as shown below have been laid.

FIG. 7 is a top view showing the arrangement of the sleepers of such a conventional ballast track without the rails, and FIG. 8 is a side view showing the arrangement of the sleepers of the ballast track.

In these figures, 1 is a ballast, 2 is a sleeper body, 3 is an elastic covering material (sometimes not used), 4 is a track pad, and 5 is a rail.

[0005] As described above, the conventional sleeper of the ballast track is a single bar, and independently supports the rails 5 at predetermined intervals.

[0006]

As described above, the conventional sleepers are made of one piece of timber and are laid independently at predetermined intervals, so that uneven settlement is likely to occur and a large amount of maintenance work is required. I need it.

Further, it cannot be said that the lateral resistance of the track is sufficient.

The present invention has been made in order to solve the above problems.
The aim is to provide a continuous bearing sleeper that can support the sleeper as continuously as possible, suppress unequal settlement, reduce maintenance work, and increase the lateral resistance of the track. .

[0009]

In order to achieve the above object, the present invention provides: [1] a continuous bearing sleeper which has both arms which are laid at intervals and extend in the rail direction; It has a sleeper body, a track pad, and a rail.

[2] In the continuous bearing sleeper according to the above [1], the distal ends of both arm portions of the sleeper main body are dimensioned to be close to the distal ends of one arm portion of an adjacent sleeper main body. I do.

[3] In the continuous bearing sleeper according to the above [2], the tip of the track pad is disposed up to the tip of both arms of the sleeper body.

[4] In the continuous bearing sleeper according to the above [2] or [3], an elastic covering material is provided on a bottom surface of the sleeper body.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a top view showing the arrangement of the sleepers excluding the rails of the ballast track showing the first embodiment of the present invention, and FIG. 2 is a side view showing the arrangement of the sleepers.

In these figures, 11 is a ballast, 1
Reference numeral 2 denotes a sleeper main body having both arm portions 12A laid on the ballast, and has a substantially "-" shape. The track pad 14 is provided only on the sleeper body 12. In addition, a rail 15 is laid along the arm portions 12A of the sleeper body 12 via the track pads 14.

FIG. 3 is a top view showing an arrangement of a sleeper provided with a track pad on a sleeper body of a ballast track according to a second embodiment of the present invention, and FIG. 4 is a ballast track showing a second embodiment of the present invention. It is a side view which shows arrangement | positioning of the sleeper with which a track pad is provided on the sleeper main body.

In this embodiment, the sleeper body 12 having both arms 12A laid on the ballast 11 and the arms 1
A long track pad 14 'is arranged on 2A. The rail 15 is laid along the long track pad 14 '.

FIG. 5 is a side view showing a third embodiment of the present invention, in which the configuration of a sleeper provided with a track pad on a sleeper body of a ballast track is shown.

In this embodiment, the track pad 14 is arranged on the sleeper body 12 having both arm portions 12A, particularly on the portion of the sleeper body 12, and the sleeper body 12 having both arm portions 12A and An elastic covering material 13 is provided on the bottom surface of both arms 12A.

FIG. 6 is a side view showing an arrangement of a sleeper in which a track pad is provided on a sleeper body of a ballast track according to a fourth embodiment of the present invention.

In this embodiment, a sleeper body 12 having both arms 12A and a long track pad 14 'are arranged on both arms 12A. An elastic covering material 13 is provided on the bottom surface of the arm 12A.

As shown in FIGS. 1 to 6, when the sleeper main body 12 having the both arm portions 12A is laid, the sleeper main body 12 is sequentially brought close to the adjacent arm portions 12A, and the continuous rail support portion is formed. Can be formed.

As described above, according to the present invention, by extending the rail supporting portion of the sleeper, the rail is supported continuously with the adjacent sleeper, the train load is widely dispersed, and the maintenance work amount is reduced. Can be achieved. In other words, by increasing the rail support length of the sleeper, a substantially uniform support state (continuous support state) is realized, whereby uneven settlement can be suppressed.

Further, the lateral resistance of the track can be increased.

In the above embodiment, the case of a ballast trajectory has been described. However, the present invention can be applied to a slab trajectory. In that case, it is desirable to provide an elastic covering material on the bottom surface of the sleeper body.

Next, let's look at the stress distribution of the lower surface ballast of each of the continuous bearing sleepers of the present invention and the conventional sleepers of the ballast track.

FIG. 9 is a view showing an analysis model of a conventional sleeper, FIG. 10 is a view showing an analysis result of the conventional sleeper, FIG. 11 is a view showing an analysis model of a continuous bearing sleeper showing a second embodiment of the present invention, FIG. 12 is a diagram showing an analysis result of the continuous bearing sleeper.

In order to clarify the load distribution effect of the continuous bearing sleepers, analysis was performed by the finite element method. The analysis model used for the analysis is shown in FIG. 9 for a conventional sleeper and in FIG. 11 for a continuous bearing sleeper. 9, 1 is a ballast, 2 is a sleeper body, and 5 is a rail. In FIG. 11, 11 is a ballast, 12 is a sleeper body, and 15 is a rail.

Using these analysis models, an analysis was performed in the case where a load was loaded just above the sleeper. The results are shown in FIGS. The material constants used in the analysis are the same for both sleepers. The stress distribution diagrams of FIGS. 9 and 12 indicate that the darker the color, the higher the stress level. From these figures, it can be seen that the continuous bearing sleeper of the present invention has fewer portions with a higher stress level than the conventional sleepers, widely disperses the train load, and supports the train continuously.

It should be noted that the present invention is not limited to the above-described embodiment, and various modifications are possible based on the spirit of the present invention, and they are not excluded from the scope of the present invention.

[0031]

As described above, according to the present invention, the following effects can be obtained.

(A) By extending the rail support portion of the sleeper, the rail is supported continuously with the adjacent sleeper, the train load is widely dispersed, uneven settlement is suppressed, and the amount of maintenance work is reduced. Can be planned.

(B) By supporting the rail with a sleeper having long arms, the lateral resistance of the track can be increased.

[Brief description of the drawings]

FIG. 1 is a top view showing an arrangement of sleepers excluding a rail of a ballast track showing a first embodiment of the present invention.

FIG. 2 is a side view showing the arrangement of the sleepers provided with the track pads on the sleeper body of the ballast track showing the first embodiment of the present invention.

FIG. 3 is a top view showing an arrangement of a sleeper provided with a track pad on a sleeper body of a ballast track according to a second embodiment of the present invention.

FIG. 4 is a side view showing an arrangement of a sleeper provided with a track pad on a sleeper body of a ballast track showing a second embodiment of the present invention.

FIG. 5 is a side view showing an arrangement of a sleeper provided with a track pad on a sleeper body of a ballast track according to a third embodiment of the present invention.

FIG. 6 is a side view showing an arrangement of a sleeper provided with a track pad on a sleeper body of a ballast track according to a fourth embodiment of the present invention.

FIG. 7 is a top view showing an arrangement of sleepers excluding a conventional ballast track rail.

FIG. 8 is a side view showing the arrangement of the sleepers of the conventional ballast track.

FIG. 9 is a diagram showing an analysis model of a conventional sleeper.

FIG. 10 is a diagram showing an analysis result of a conventional sleeper.

FIG. 11 is a view showing an analytical model of a continuous bearing sleeper according to a second embodiment of the present invention.

FIG. 12 is a view showing an analysis result of a continuous bearing sleeper according to the second embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 11 ballast 12 sleeper body 12A both arms 13 elastic covering material 14 track pad 14 'long track pad 15 rail

Claims (4)

[Claims] 1. A continuous bearing sleeper, comprising a sleeper body having two arms extending in the rail direction, being laid at an interval, a track pad, and a rail. Bearing sleepers. 2. The continuous bearing sleeper according to claim 1, wherein the ends of both arm portions of the sleeper main body have dimensions close to the end of one arm portion of an adjacent sleeper main body. Bearing sleepers. 3. The continuous bearing sleeper according to claim 2, wherein a tip of said track pad is arranged up to a tip of both arms of the sleeper body. 4. The continuous bearing sleeper according to claim 2, wherein an elastic covering material is provided on a bottom surface of the sleeper main body.