JPH09296401A - Elastic direct track - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide an elastic direct-connection track that enables labor saving and simplification as much as possible for on-site construction when laying and repairing a new track. SOLUTION: The left and right subgrade beams 7, 7 are laid in parallel on the subgrade 6 along the longitudinal direction of the subgrade 6, and the left and right subgrade beams 7, 7.
A plurality of sleepers 8 and 8 installed on the 7 along the longitudinal direction of the subgrade beam 7 at predetermined intervals, and left and right rails 10 and 10 laid in parallel on the sleepers 8 and 8, Left and right subgrade beams 7,7
And an elastic body 9 interposed between the sleepers 8 and 8,
Concave groove portion 7 opening right above the upper end portions of the left and right subgrade beams 7, 7.
a, 7a are provided, groove portions 8a that are continuous in the circumferential direction of the sleeper 8 are provided on the bottom surface and side surfaces of both ends of the sleeper 8, and the elastic body 9 is formed in the concave portion formed on the PC beam 7. The groove portion 7a and the groove portion 8a formed on the sleeper 8 are formed in a substantially groove-shaped cross section that can be attached to and detached from the groove portion 7a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elastic direct coupling track which enables easy laying and repair of a railway track.

[0002]

2. Description of the Related Art FIGS. 7 (a) and 7 (b) show an example of a conventional elastic direct coupling track. In the figures, reference numeral 1 denotes a railroad track floor, 2
Left and right concrete bodies constructed on this roadbed 1, 3
Is a concrete sleeper installed between the left and right concrete bodies 2, 2 at predetermined intervals along the longitudinal direction, 4 is an elastic member interposed between the concrete sleeper 3 and the concrete body 2, and reference numeral 5 Are rails laid in parallel on the concrete sleepers 3 and 3 along the longitudinal direction of the roadbed 1.

The left and right concrete bodies 2, 2 are constructed by cast-in-place concrete, and recesses 2a, 2a having a predetermined depth are formed at the positions where the ends of the concrete sleepers 3 are placed. Elastic members 4, 4 are installed in the left and right recesses 2a, 2a.
Are attached respectively, and the left and right ends of the concrete sleeper 3 are supported in the recess 2a via the elastic members 4.

In such a configuration, the load generated by the lateral rail pressure when the train is passing is distributed to the left and right concrete bodies 2,2 via the left and right elastic members 4,4.
Distributed from 2,2 to subgrade 1.

[0005]

The conventional elastic direct coupling orbit is constructed as described above, and has the right and left concrete bodies.
Since 2 and 2 are constructed by cast-in-place concrete, it requires a lot of labor and construction time for on-site construction, and the elastic member 4 has a fairly wide range of the left and right ends of the concrete sleeper 3 (bottom part 3a, side part 3b). And the end face portion 3c) are installed (see FIGS. 7 (a) and 7 (b)), there is a problem that not only is it difficult to manufacture in terms of shape, but also material costs increase.
Further, in the future repair work, there is a problem that the elastic member 4 and the like cannot be easily replaced and the repair work is troublesome.

The present invention has been made in order to solve the above problems, and provides an elastic direct coupling track which enables the labor saving and simplification of on-site construction as much as possible when laying and repairing a new track. The purpose is to do.

[0007]

An elastic direct coupling track according to the present invention is provided with a left and right subgrade beam laid parallel to the longitudinal direction of the subgrade on the subgrade, and on the left and right subgrade beams. A plurality of sleepers installed at predetermined intervals in the longitudinal direction of the roadbed beam, left and right rails laid in parallel along the longitudinal direction of the roadbed on the sleepers, the left and right roadbed beams, and each of the above A plurality of elastic bodies interposed between the sleepers, a groove groove opening directly above is provided at the upper end of the left and right sub-bed beams, and the circumference of the sleepers is provided at the bottom and side surfaces of both ends of the sleeper. A groove portion that is continuous in the direction, and the elastic body is formed into a substantially groove-shaped cross section that can be attached to and removed from the concave groove portion and the groove portion.

[0008]

1 to 6 show an embodiment of an elastic direct coupling track according to the present invention. In the figures, reference numeral 6 is a railroad track subbed, and 7 is precast concrete or cast-in-place concrete. And the roadbed beams laid in parallel on the roadbed 6 along the continuous direction, 8 is a predetermined distance between the left and right roadbed beams 7,7 along the continuous direction of the left and right roadbed beams 7,7. Sleepers installed at intervals (hereinafter referred to as "concrete sleepers 8"), 9 is an elastic body interposed between the left and right subgrade beams 7,7 and each concrete sleeper 8, and 10 is between the concrete sleepers 8 and 8. Rails laid in parallel along the longitudinal direction of the roadbed 6, 11 sound-absorbing materials such as ballasts or volcanic debris that are laid around the periphery of the concrete sleepers 8 and absorb noise when trains pass, and reference numeral 12 Is interposed between the subgrade 6 and the subgrade beam 7, It is an adjusted concrete that adjusts the level of the floor beam 7.

Grooves 7a, 7a having a predetermined depth are formed in the mounting portions of the concrete sleepers 8 of the left and right sub-bed beams 7, 7 and the both ends of the concrete sleepers 8 face the concave grooves 7a, 7a. Thus, the groove-shaped portion 8a is formed, and the elastic body 9 is attached between the concave groove portion 7a and the groove-shaped portion 8a.

The elastic body 9 is formed in such a size that it can be easily attached to and detached from the recessed groove portion 7a, and is formed in a groove shape that opens directly above so as to be easily attached to and detached from the grooved portion 8a. (See Figure 6).

The left and right rails 10, 10 are installed on the concrete sleepers 8 so as to be located right above the left and right subgrade beams 7, 7.

In such a construction, the rail lateral pressure load generated when the train passes is mediated by the elastic members 9 and the left and right sub-bed beams 7,7.
And are distributed from the left and right subgrade beams 7, 7 to the subgrade 6.

[0013]

EFFECTS OF THE INVENTION The elastic direct coupling track according to the present invention is configured as described above, and serves as a member for distributing the rail lateral pressure generating load to the roadbed between the roadbed and the sleepers, as an alternative to the concrete slab. A beam (PC beam) is laid, and the elastic body interposed between the roadbed beam and the sleeper is formed in a size that can be easily attached to and removed from the recess formed in the roadbed beam, and the sleeper. Since it is formed in a groove shape that can be easily installed and removed in the concave part formed in the, it is possible to omit assembly and dismantling of the formwork at the site, placing and curing concrete, etc., and putting in and out of sleepers during repair work. Since the elastic body can be easily replaced, there is an effect that labor saving and simplification of on-site construction can be achieved when laying and repairing a new track.

Further, since the groove shape is formed so as to cover the bottom surface and the side surface of the sleeper only at the connecting portion between the elastic body, the roadbed beam and the sleeper, the material cost can be significantly reduced. There is. Furthermore, by using a subgrade beam instead of a concrete slab, it is possible to secure a space that can be filled with sufficient ballast around the sleepers. There is also an effect that can be.

[Brief description of drawings]

FIG. 1 is a plan view of a railway track showing an embodiment of an elastic direct coupling track according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

5 is a sectional view taken along line VV in FIG.

FIG. 6 is a perspective view of an elastic member.

7A is a plan view showing an example of a conventional elastic direct coupling track, and FIG. 7B is a sectional view taken along line VII-VII in FIG. 7A.

[Explanation of symbols]

1 ... Rail track subbed, 2 ... Concrete, 3 ... Concrete sleepers, 4 ... Elastic member, 5 ... Rail, 6 ... Roadbed, 7 ...
Roadbed beams, 8 ... Concrete sleepers, 9 ... Elastic bodies, 10 ... Rails, 11 ... Ballast or sound absorbing materials, 12 ... Adjusting mortar.

Claims (1)

[Claims] 1. A subgrade beam laid on the subgrade in parallel with the longitudinal direction of the subgrade, and a plurality of subgrades installed on the left and right subgrade beams at predetermined intervals in the longitudinal direction of the subgrade beam. Sleepers, left and right rails laid parallel to the longitudinal direction of the roadbed on the sleepers, a plurality of elastic bodies interposed between the left and right roadbed beams and the sleepers, A grooved portion that opens directly above is provided at the upper ends of the left and right subgrade beams, grooved portions that are continuous in the circumferential direction of the sleeper are provided at both ends of the sleeper, and the elastic body is provided with the grooved portion and the grooved portion. An elastic direct coupling orbit, characterized in that it is formed in a substantially groove-shaped cross section that can be attached to and detached from.