JP2000290901A - Sleeper and rail installation structure - Google Patents

Abstract

(57) [Problem] To provide a sleeper and a rail installation structure capable of easily performing rail installation work even at a boundary between a land and a bridge, and ensuring sufficient strength at the boundary. SOLUTION: The rail installation structure of the present invention comprises a land 20 and a bridge.
A sleeper body located at a boundary between a land 20 and a bridge 21, comprising a rail 10 spanned by the rail 21 and sleepers 1 and 2 laid below the rail 10 so as to intersect with the rail 10.
1 has a shape in which at least one side in the direction of intersection Y with the rail 1 is inclined, and this side is laid along the boundary line 22 between the land 20 and the bridge 21, and the sleeper body 1 is made of fiber-reinforced hard material. It is composed of a plate made of synthetic resin foam.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sleeper and a rail mounting structure, and is suitable for a sleeper laid below a rail erected from a land to a bridge.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
Is known to be made by processing wood or concrete into a square shape, and this square sleeper 1 'is laid at the lower part of the rail 10' so as to intersect the rail 10 'at 90 degrees.

[0003]

[Problems to be solved by the invention]

However, as shown in FIG. 6, a rectangular sleeper 1 'is also laid at the boundary between the land 20' and the bridge 21 'so as to cross the rail 10' at 90 degrees. When the rail 10 'is inclined with respect to the boundary line 22' between the land 20 'and the bridge 21',
The sleeper 1 'at the border is the land 22' and the bridge 2
1 ′ will be laid. Therefore, it is difficult to construct the boundary portion, and there is a problem in strength.

Conventional sleepers made of wood have a problem in terms of resources, and sleepers made of concrete are heavy in weight and have poor workability.

Accordingly, the present invention has been made to solve the above problems, and a first object of the present invention is to facilitate rail installation work, especially at the boundary between a land and a bridge. It is an object of the present invention to provide a sleeper and a rail installation structure that can easily perform the operation even when the operation is performed and can sufficiently secure the strength of the boundary portion.

A second object of the present invention is to provide a sleeper and a rail installation structure which can easily perform a rail installation operation and have excellent durability.

[0008]

In order to solve the above-mentioned first problem, a sleeper according to the first aspect of the present invention is a sleeper laid below a rail so as to intersect with the rail, and a sleeper body. Has a shape such that at least one side in a direction intersecting with the rail when laid is inclined with respect to the rail, and the sleeper body is made of a plate material made of fiber-reinforced hard synthetic resin foam. And

In the sleeper having the above-mentioned structure, even if the rail is inclined with respect to the boundary between the land and the bridge, one side of the sleeper body is inclined along the inclination of the boundary. Can be laid. For this reason, even in this boundary portion, the sleeper can be laid so as not to straddle both the bridge and the land.

Further, since the sleeper body is made of a fiber-reinforced hard synthetic resin foam, the sleeper has sufficient strength and is lightweight.

According to another aspect of the present invention, a sleeper according to the second aspect of the present invention is a sleeper laid below a rail so as to intersect with the rail, and the sleeper body is made of a fiber-reinforced hard composite. Consisting of a plurality of plate members made of resin foam, and at least one plate member,
It is characterized in that the fiber direction is provided so as to be different from the fiber direction of the other plate material.

The sleeper having the above structure is lightweight because the sleeper body is made of a fiber-reinforced hard synthetic resin foam.

Moreover, since at least one plate material of the sleeper body is provided so that its fiber direction is different from the fiber direction of the other plate materials, since the number of fiber directions in the sleeper body becomes plural, the strength is excellent. I have.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment)

FIG. 1 is a plan view of a sleeper according to a first embodiment of the present invention including a partially cut-out portion. In addition, in the figure, the arrow described on the plate material indicates the direction in which the long fiber members are aligned. FIG. 2 is a plan view of the sleeper-installed rail mounting structure of FIG. 1.

The sleeper according to the embodiment of the present invention is a plate material 3a, 3b, 3 made of a fiber-reinforced hard synthetic resin foam formed so that long fiber members are aligned in a certain direction.
c is laminated and bonded (three layers in the present embodiment).

Each of the plate members 3a has the same shape in plan view, and is formed in a trapezoidal shape in which opposite sides in the short direction (X direction in the drawing) are parallel. By laminating and bonding the plate members 3a, the sleeper body 1 has a shape in which one side in a crossing direction (longitudinal direction, Y direction in the drawing) with the rail 10 is inclined with respect to the rail 10 when laid. Is formed.

As the kind of the foamed resin constituting the plate material, for example, a thermosetting resin such as urethane, epoxy resin, vinyl ester resin, unsaturated polyester resin, and phenol resin, which is hard, is suitably used. . In addition, in the foamed resin, in order to improve the compressive strength and reduce the cost, inorganic fillers such as calcium carbonate, gypsum, talc, aluminum hydroxide, clay, shirasu balloon,
Light aggregates such as pearlite and glass balloons may be added.

The fiber for reinforcing the rigid resin foam material of the plate material may be any of inorganic fibers such as glass fiber, carbon fiber and metal fiber, and organic fibers such as natural fiber and synthetic fiber. Glass fiber is suitable from the viewpoint of economy and economy.

As glass fiber, glass roving,
Glass roving cloths, glass mats, continuous strand mats, and the like can be used. These fibers may be used alone, or may be used by laminating two or more layers, or a mixture of long fibers and short fibers may be used.

The fibers in the plate material are arranged in a certain direction, but the directionality is different depending on the plate material 3a. Specifically, as shown in FIG. 1, the fibers are aligned in the longitudinal direction (Y direction shown in the drawing) in the upper and lower plate members 3a and 3c, and in the transverse direction X in the intermediate layer plate member 3c. I have.

The sleeper according to the first embodiment has the above-described configuration. Next, a rail installation structure using this sleeper will be described.
This will be described with reference to FIG.

This rail installation structure comprises a land 20 and a bridge 21
A pair of parallel rails 10 spanned by the
It comprises a plurality of sleepers 1, 2 laid below the rail 10 so as to intersect with zero.

Of the sleepers 1 and 2, the sleeper 2 laid at a portion other than the boundary between the land and the bridge (the land portion and the bridge portion) has a rectangular shape in plan view as shown in FIG. The side in the longitudinal direction Y is 90
It is laid to intersect (orthogonal) at degrees. These square sleepers 2 are laid in parallel with each other at a predetermined interval.

The trapezoidal sleeper 1 shown in FIG.
At the boundary between the bridge 0 and the bridge 21, the side in the short direction X is the rail 1
It is laid so as to be substantially parallel to 0. The trapezoid sleeper 1 is laid so that one side in the longitudinal direction Y that is not orthogonal to the adjacent side (side in the short direction) is substantially parallel to the boundary line 22 between the land 20 and the bridge 21. I have. In addition,
In the present embodiment, the trapezoidal sleepers 1 are laid on both the land side and the bridge side of the boundary portion. Each of these trapezoidal sleepers 1 is laid so as to be placed on only one of the land and the bridge. Also, sleeper 1 on the land side and sleeper 1 on the bridge side
Have a point-symmetrical shape and are laid at predetermined intervals so that the sides in the longitudinal direction Y are parallel to each other.

As described above, the sleeper body 1 is composed of the plate members 3a,... Made of fiber-reinforced hard synthetic resin foam, so that the sleeper body 1 has sufficient strength as a sleeper and has a higher strength than conventional sleepers such as concrete. Lightening is achieved.

Moreover, the plurality of plate members 3a made of fiber-reinforced hard synthetic resin foam are configured so that the fibers in the sleeper body 1 are directed in two directions, so that the sleeper 1 has sufficient strength and durability. Is excellent.

At the boundary between the land 20 and the bridge 21 where the rail 10 is inclined to the boundary 22, another sleeper 2
Even if the trapezoidal sleeper 1 is laid continuously from
It can be laid so that it does not straddle both the bridge 0 and the bridge 21. Therefore, the rail installation work can be easily performed, and the rail installation structure can have sufficient strength.

(Second embodiment)

FIG. 3 is a plan view of a sleeper according to a second embodiment of the present invention including a partially cut-out portion. In the drawing, the arrows described on the plate material indicate that the long fiber members are aligned as in FIG. Indicates the direction in which it was performed

The sleeper according to the second embodiment is formed by laminating a plurality of layers (three layers in the second embodiment) of plate members 3a, 3b, 3c made of a fiber-reinforced hard resin foam. Are the same as those of the first embodiment.

As shown in FIG. 3, the fibers in the plate are
The upper and lower plate members 3a and 3c are aligned in the longitudinal direction (Y direction shown in the drawing), and the intermediate plate member 3b is aligned in a direction parallel to the inclined side unlike the first embodiment. .

(Third Embodiment)

FIG. 4 shows a sleeper according to a third embodiment of the present invention, wherein (a) is a plan view and (b) is a front view. In addition, in the figure, the arrow described on the member indicates the direction in which the long fiber members are aligned as in FIG.

The sleeper 1 according to the third embodiment includes a heartwood 5
And an end member 7 of a fiber-reinforced hard synthetic resin foam fixed to an edge of the core 5 in a direction (longitudinal direction Y) intersecting with the rail 10 and formed so as to align the long fiber member in a certain direction. Consists of

The core member 5 is also formed of a fiber-reinforced hard synthetic resin foam into a trapezoidal shape in plan view. On two sides in the longitudinal direction of the core 5, a step 5a having a certain depth is formed on each of the upper surface and the rear surface. The steps 5a are respectively formed along the sides.

The end member 7 is made of a plate having substantially the same thickness as the depth of the step 5a, and is fixed so as to fit into each step 5a. Adjacent side (transverse direction X
The end member 7 located on the side (the side on the left side in FIG. 4) orthogonal to the side (a side in FIG. 4) is formed in a square shape so as to fit into the step 5a. The end member 7 located on the side (the right side in FIG. 4) that is not orthogonal to the adjacent side (the side in the lateral direction X) is formed in a parallelogram so as to fit into the step 5a.

As shown in FIG. 4, the fibers of the core member 5 and the end member 7 are aligned in the short direction X of the core member 5 and in the direction parallel to each side of the end member 7.

The sleeper according to the third embodiment has the same advantages as those of the above-described embodiment. In addition, since the engagement portion (step 5a) for engaging the end member 7 with the core material 5 is formed, the sleeper 5
And the end member 7 can be easily and firmly fixed.

(Fourth Embodiment)

FIG. 5 shows a sleeper according to a fourth embodiment of the present invention, wherein (a) is a plan view and (b) is a front view. In addition, in the figure, the arrow described on the member indicates the direction in which the long fiber members are aligned as in FIG.

The sleeper according to the fourth embodiment is, similarly to the sleeper according to the third embodiment, fixed to a core member 5 and an edge (longitudinal direction Y) of the core member 5 in a direction intersecting the rails 10 and a long fiber member. And end members 7 of a fiber-reinforced hard synthetic resin foam formed so as to be aligned in a certain direction.

The core member 5 also has a trapezoidal shape in a plan view from a fiber-reinforced hard synthetic resin foam. Here, the core material 5 is formed in a trapezoidal shape smaller than the final shape in plan view, and the core material 5 has a protrusion protruding outward from two sides in the longitudinal direction as shown in FIG. A portion 5b is formed.
The protruding portions 5b are formed along the respective sides.

The end members 7 are located on both sides of the core material 5, but are perpendicular to the adjacent sides (the sides in the transverse direction X) (FIG. 5).
The end member 7 located on the left side of FIG. 5 has a rectangular shape in plan view, and the end member 7 located on the side (the right side in FIG. 5) that is not orthogonal to the adjacent side (side in the lateral direction X) is viewed in plan. It is formed in a parallelogram shape. The end member 7 is provided with a concave portion 7a on a side surface into which the protruding portion 5b of the core material 5 can be fitted. I have. Further, each of the end members 7 has the same thickness as the core material 5 and is formed to be flush with the fixed core material 5 on the upper surface and the rear surface.

The core member 5 and the end member 7 are both formed of a fiber-reinforced hard resin foam. However, as shown in FIG. The members 7 are arranged in a direction parallel to each side.

The sleeper according to the fourth embodiment has the same advantages as those of the above-described embodiment, and furthermore, an engaging portion (protruding portion 5b) and an engaged portion to be engaged with the core member 5 and the end member 7, respectively. (Recess 7b) is formed, the core 5 and the end member 7
Has the advantage that can be more firmly fixed.

(Other Embodiments)

The sleeper according to each of the above embodiments has the above configuration and the above advantages, but the present invention is not limited to the configuration of the above embodiment and is intended by the present invention. The design can be changed within the range. That is, although the sleeper according to any of the above embodiments has been described as having a trapezoidal shape in plan view, the invention described in claim 1 is not necessarily limited thereto, and for example, a triangular shape, a non-square shape such as a parallelogram shape, or the like may be used. It is possible to adopt one.

[0049]

The sleeper according to claim 1 is made of a plate made of a fiber-reinforced hard synthetic resin foam, so that it has sufficient strength as a sleeper and is lighter in weight than conventional sleepers such as concrete. Is planned,
Workability of rail installation work is improved. Moreover, since at least one side has a shape inclined with respect to the rail, even when the rail is at the boundary between the land and the bridge that is inclined to the boundary line, the sleeper does not straddle both the bridge and the land. The sleeper can be easily laid on the rail, so that the rail installation work is easy and the strength of this boundary portion can be sufficiently secured.

The sleeper according to claim 2 is composed of a plurality of plate members made of a fiber-reinforced hard synthetic resin foam, has sufficient strength as a sleeper, is lighter in weight than a conventional sleeper, and has a rail structure. The workability of the installation work is improved. Furthermore, at least one plate material of the sleeper body is provided so that its fiber direction is different from the fiber direction of the other plate materials, and since there are a plurality of fiber directions in the sleeper body, its strength is excellent and durability is further improved. it can.

[Brief description of the drawings]

FIG. 1 shows a plan view of a sleeper according to a first embodiment of the present invention, which includes a cutout.

FIG. 2 shows a plan view of the rail installation structure of the first embodiment.

FIG. 3 is a plan view of a sleeper according to a second embodiment of the present invention including a partially cut-out portion.

FIG. 4 shows a sleeper according to a third embodiment of the present invention,
(A) is a plan view and (B) is a front view.

FIG. 5 shows a sleeper according to a fourth embodiment of the present invention;
(A) is a plan view and (B) is a front view.

FIG. 6 shows a plan view of a conventional rail installation structure.

[Explanation of symbols]

 Reference Signs List 1 sleeper body 3a upper plate 3b intermediate plate 3c lower plate 5 core 5a step (engagement) 5b protrusion (engagement) 7 end member 7a recess (engagement)

Claims (6)

[Claims] 1. A sleeper laid below a rail so as to intersect with the rail, wherein the sleeper body has a shape in which at least one side in a crossing direction with the rail is inclined with respect to the rail when laid. A sleeper body, wherein the sleeper body is made of a plate made of fiber-reinforced hard synthetic resin foam. 2. A sleeper laid below the rail so as to cross the rail, wherein the sleeper body is composed of a plurality of plate members made of a fiber-reinforced hard synthetic resin foam, and at least one plate member is A sleeper which is provided so that its fiber direction is different from the fiber direction of another plate material. 3. A sleeper laid below the rail so as to intersect with the rail, wherein the sleeper body has a shape in which at least one side in the direction of intersection with the rail is inclined with respect to the rail when laid. And the sleeper body is composed of a plurality of plate members made of fiber-reinforced hard synthetic resin foam, and at least one plate member is provided such that its fiber direction is different from the fiber direction of the other plate members. A sleeper characterized by the following. 4. A rail installation structure comprising a rail bridged between a land and a bridge, and a sleeper laid below the rail so as to intersect with the rail, wherein the rail is located at a boundary between the land and the bridge. The sleeper body has a shape in which at least one side in the direction intersecting with the rail is inclined, and this side is laid along the boundary between the land and the bridge, and the sleeper body is made of a fiber-reinforced hard composite. A rail installation structure comprising a plate made of a resin foam. 5. A rail installation structure comprising a rail bridged between a land and a bridge and a sleeper laid below the rail so as to intersect with the rail, wherein the sleeper body is made of fiber-reinforced hard synthetic resin foam. A rail installation structure comprising a plurality of plate members made of a body, wherein at least one plate member is provided so that a fiber direction thereof is different from a fiber direction of another plate member. 6. A rail installation structure comprising a rail bridged between a land and a bridge and a sleeper laid below the rail so as to intersect with the rail, wherein the rail is located at a boundary between the land and the bridge. The sleeper body has a shape in which at least one side in the direction intersecting with the rail is inclined, and this side is laid along the boundary between the land and the bridge, and the sleeper body is made of a fiber-reinforced hard composite. A rail installation structure comprising a plurality of plate members made of resin foam, wherein at least one plate member is provided so that a fiber direction thereof is different from a fiber direction of another plate member.