JP2000297401A - Rail installation structure and repair method for existing sleepers - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent a dent from occurring again after repairing a dent that occurs on a surface portion of a sleeper. SOLUTION: This rail installation structure holds a rail 1 with a sleeper 10 via a tie plate 3, and a fiber-reinforced hard synthetic resin layer 21 is provided on an upper surface of the sleeper 10 at least on a portion where the tie plate 3 is mounted. A hard reinforcing member 20 such as rubber is provided, and an elastic member 30 such as rubber is attached to at least a portion where the tie plate 3 is mounted on the upper surface of the reinforcing member 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail mounting structure for holding a rail by sleepers via a tie plate.
Further, the present invention relates to a method for repairing the sleeper thus installed.

[0002]

2. Description of the Related Art Conventionally, sleepers are made of wood or PC (Press-Co).
ncrete) is widely used. However, the use of wooden sleepers has not only been short-lived, but has also been refrained from being adopted due to problems such as a decline in timber resources. In addition, the sleeper made of PC is not only expensive but also heavy, and the installation work is complicated. In addition, sleepers made of PC are vulnerable to vibration, and therefore are not suitable for branching portions of rails.
As an alternative to these sleepers, synthetic sleepers formed of fiber rigid reinforced resin foams have attracted attention. The synthetic sleeper formed from the fiber rigid reinforced resin foam is light in weight, excellent in strength, and excellent in durability.

[0003]

However, since synthetic sleepers are made of long fibers and a hard foamed resin, they are more likely to be worn than PC sleepers. Therefore, when the rail 1 is fixed to the sleeper 10 via the tie plate 3 as shown in FIG. 9 (a), the portion in contact with the end of the tie plate 3 is the load when the train passes. 9 (b), and a dent A as shown in FIG. In other words, the ballast below the sleeper 10 gradually sinks due to the load when passing through the train, and the so-called "tilting phenomenon" in which the sleeper 10 moves up and down occurs.
The surface of the sleeper 10 is worn by friction with the tie plate 3 due to the vertical movement. In such a dent A, the rail 1 is located at an end of the tie plate 3 such as a railroad crossing or a branch, for example, so that the load of the train or the like can be reduced.
This occurs remarkably when it acts on the edge of the.

In order to prevent the occurrence of the depression A in the sleeper 10, a structure in which a metal plate or a rubber plate is simply interposed as a spacer may be considered. A dent is generated due to contact with the substrate. Further, although the rubber plate can absorb vibrations due to its elasticity, it cannot disperse the load when passing through the train, so that the occurrence of dents on the sleeper surface cannot be reliably prevented. Further, when the spacer is simply interposed between the tie plate 3 and the sleeper 10, sand, pebbles, and the like enter between the rubber plate and the sleeper 10, and the sand and the like wear the sleeper 10 due to vibration. Then, dents occur.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to provide a rail installation structure capable of reliably preventing the formation of a depression on the sleeper surface corresponding to a tie plate. An object of the present invention is to provide a method for repairing an existing sleeper which can accurately repair a generated dent.

[0006]

In order to solve the above problems,
The rail installation structure according to the present invention is a rail installation structure that holds a rail with sleepers via a tie plate.On the upper surface of the sleeper, at least a portion where the tie plate is mounted is made of a fiber-reinforced hard synthetic resin or the like. A hard reinforcing member is provided, and an elastic member such as rubber is interposed between the reinforcing member and the tie plate.

[0007] In the rail installation structure having the above configuration, the sleeper is provided with the reinforcing member and the elastic member at the portion where the tie plate is mounted. Therefore, the load of the train passing by the hard reinforcing member can be accurately determined. Can be properly dispersed, and abrasion of sleepers due to contact with the tie plate can be accurately prevented.

According to a second aspect of the present invention, there is provided a method for repairing an existing sleeper which repairs a concave portion of the sleeper which occurs below the tie plate. Attach an elastic member such as rubber to the upper surface of a hard reinforcing member made of synthetic resin, etc.,
The reinforcing member is attached to a concave portion of the sleeper.

According to the existing sleeper repair method having the above-mentioned structure, the sleeper whose dent is generated due to contact with the tie plate can be repaired, and the repaired sleeper is provided with a reinforcing member at a portion where the tie plate is placed. And since the elastic member is located, abrasion of the lower portion of the sleeper tie plate due to a load or the like when the train passes is accurately prevented.

The method for repairing an existing sleeper according to the present invention employs a method of grinding the surface of the sleeper recess with a sander or the like before attaching the reinforcing member to the sleeper recess. Is preferred.

According to the third aspect of the present invention, the recessed portion is ground in advance before the reinforcing member is mounted, so that the mounting surface of the reinforcing member can be cleaned in advance, and the reinforcing member can be reliably and accurately fixed to the sleeper. Can be installed.

[0012]

FIG. 1 is a front view of a sleeper in a rail installation structure according to an embodiment of the present invention. FIG. 2 shows FIG.
1 is a sectional view of a rail installation structure according to an embodiment of the present invention using a sleeper. FIG. 3 shows a front view of a sleeper according to another embodiment. FIG. 4 shows a sleeper according to another embodiment, (a) is a sectional front view, and (b) is a sectional side view. FIG. 5 and FIG. 6 each show a cross-sectional front view of a sleeper according to another embodiment. FIG. 7 shows a perspective view including a cross section of a sleeper according to another embodiment. FIG. 8 shows a front sectional view of the sleeper main body in one step of the existing sleeper repair method of the present invention.

A sleeper 10 shown in FIG. 1 has a main body 11 made of a plate material of a fiber-reinforced hard synthetic resin foam.
As the type of the foamed resin constituting the plate material, for example,
Hard thermosetting resins such as urethane, epoxy resin, vinyl ester resin, unsaturated polyester resin, and phenol resin are preferably used. In order to improve the compressive strength and reduce the cost in the foamed resin, inorganic fillers such as calcium carbonate, gypsum, talc, aluminum hydroxide, and clay, and lightweight bones such as shirasu balloons, pearlite, and glass balloons are used. A material may be added. As the fiber for reinforcing the rigid resin foam material of the plate material, for example, any one of inorganic fiber such as glass fiber, carbon fiber, metal fiber, and ceramic fiber, and organic fiber such as synthetic fiber such as aromatic polyamide fiber and natural fiber is used. However, glass fiber is suitable in terms of strength and economy. The fiber form is preferably a long fiber form such as yarn, cloth, roving, roving cloth, cross mat, and, if necessary, a short fiber such as a chip or middle fiber or a hollow filler such as a shirasu balloon. You may. Examples of the glass fiber include a glass roving, a glass roving cloth, a glass mat, and a continuous strand mat. 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 most preferable material is a foam in which a hard urethane resin is reinforced with long glass fibers (for example, trade name “Eslon Neo Lumber FF”).
U "Sekisui Chemical Co., Ltd.).

On the upper surface of the sleeper body 11, a reinforcing layer 21 made of a fiber-reinforced hard synthetic resin (excluding foam) is formed over the entire surface. In this embodiment,
The reinforcing member 20 is composed of the reinforcing layer 21 made of the fiber-reinforced hard synthetic resin. At least two types of glass fibers constituting the reinforcing layer 21 are laminated. For example, a resin layer can be formed by alternately stacking glass mats and glass rovings. The number of glass fibers to be laminated can be appropriately determined according to the abrasion resistance, for example,
An FRP11 ply (MRRMRMRMM) in which a glass mat (M) and a glass roving (R) are laminated in a total of one layer can be obtained.

A rubber plate 30 is attached to the entire upper surface of the reinforcing layer 21. The rubber plate 30 is adhered by applying an adhesive to the entire upper surface of the reinforcing layer 21 or the lower surface of the rubber plate 30, and the rubber plate 30 is adhered by the adhesive. In this embodiment, the rubber plate 3
0 constitutes an elastic member. As the rubber plate 30, for example, a plate made of chloroprene rubber can be used.

A tie plate 3 is fixed to the upper surface of the sleeper 10 having the above-described structure, and the rail 1 is mounted on the tie plate 3.
Is mounted and fixed. Here, an example in which the sleeper 10 is used as a sleeper 10 inside a railroad crossing as shown in FIG. 2 will be described.

On the sleeper 10, on the upper surface of the rubber plate 30,
A tie plate 3 for mounting and fixing the rail 1 is fixed to two places on the left and right (illustration of the tie plate on the right side is omitted).

The rail 1 is mounted on the tie plate 3, and the rail 1 is integrally fixed to the tie plate 3 and the sleeper 10 by fixing means (not shown) such as a dog nail.

In the rail installation structure shown in FIG. 2, a pair of guide rails 1 are laid inside along a pair of parallel main rails 1, and each tie plate 3 has one main rail 1 and an adjacent one. One guide rail 1 is mounted and fixed.

Inside of the guide rail 1 (right side in FIG. 2)
A rail splint 5 is provided upright along the rail 1 outside the main line rail 1 (left side in FIG. 2). The rear side of the rail splint 5 erected on the inner side of the guide rail 1 (the right side of the rail splint 5 in FIG. 2) and the side of the main rail 1 (FIG. 2).
The left side of the rail splint 5) is filled with a pavement material 7 such as asphalt, so that the level crossing is paved to eliminate a step with the rail 1.

Since the rail installation structure of the present embodiment has the above-described structure, the load and vibration when passing through the train are absorbed more accurately by the reinforcing layer 21 made of a fiber-reinforced hard synthetic resin and the rubber plate 30, so that the fiber is reinforced. Abrasion of the sleeper body 11 made of a rigid synthetic resin foam can be prevented. In particular, the main line rail 1 through which the train passes is located at an end of the tie plate 3 rather than at the center, and the load of the train or the like acts on the end of the tie plate 3, but this load is made of fiber-reinforced hard synthetic resin. The reinforcement layer 21 can accurately disperse, and the wear of the sleeper body 11 due to the concentrated load can be accurately prevented.

In the present embodiment, the reinforcement layer 21 is formed over the entire surface of the sleeper 10 and the rubber plate 30 is adhered. However, the present invention is not limited to this. For example, as shown in FIG. The structure in which the reinforcing layer 21 serving as the reinforcing member 20 is partially formed and the rubber plate 30 serving as the elastic member is partially adhered to the place to be fixed is also within the range intended by the present invention.

On the upper surface of the sleeper body 11, there is formed a housing portion 11a for housing the reinforcing member 20 at a position corresponding to the tie plate 3, and the housing portion 11a is provided with the housing portion 11a shown in FIGS. Even if the reinforcing member 20 is attached as shown in FIG. 7, it is within the intended range of the present invention.

Further, the material of the reinforcing member 20 is not limited to a fiber-reinforced hard synthetic resin, and it is also within the scope of the present invention to form the reinforcing member 20 by a metal plate 22 as shown in FIG. In the sleeper 10 shown in FIG. 4, a rubber plate 30 as an elastic member is attached to the upper surface of a metal plate 22 (reinforcing member 20) made of an iron plate, and this is fixed to the sleeper body 11 by fixing means 23 such as a coach screw. Is what you are doing. More specifically, the sleeper body 11
The upper portion and the upper surface of the portion on which the tie plate 3 is mounted are shaved to form a receiving portion 11a for the reinforcing member 20. The receiving portion 11a is provided with a substantially inverted U-shaped metal plate 22. Screw member 23 is accommodated through a hole 22 a formed in the side of the metal plate 22.
Is screwed to the sleeper body 11, and the metal plate 22 having the rubber plate 30 on the upper surface is fixed to the sleeper body 11.

Further, the present invention is not limited to the case where the reinforcing member 20 is made of a single material. As shown in FIGS. 5, 6, and 7, the reinforcing member 20 has a multilayer structure. It is also possible. Reinforcing member 2 shown in FIG.
Numeral 0 indicates a resin layer 24 made of a fiber-reinforced hard synthetic resin (excluding a foam) formed on the upper surface of a core material 25 made of a plate material of a fiber-reinforced hard synthetic resin foam material similar to the material of the sleeper body 11. is there. Further, the reinforcing member 20 shown in FIG.
Is formed by forming a resin layer 24 made of fiber-reinforced hard synthetic resin (excluding foam) on the upper and lower surfaces of a core material 25 made of a plate material of the same fiber-reinforced hard synthetic resin as the material of the sleeper body 11. It is. Further, the reinforcing member 20 shown in FIG.
A core material 25 made of a fiber-reinforced hard synthetic resin foam plate material similar to the above material is fixed.

In the sleeper 10 shown in FIGS. 4, 5, 6 and 7, the step of the housing portion 11 a of the sleeper body 11 and the thickness of the reinforcing member 20 are substantially the same, and the reinforcing member The upper surface of the sleeper body 11 and the upper surface of the sleeper body 11 are substantially flush with each other.
Are provided so as to protrude upward.
It is also possible to make the step a larger than the thickness of the reinforcing member 20 so that the upper surface of the elastic member 30 and the upper surface of the sleeper body 11 are substantially flush.

Further, in the above embodiment, the rubber plate 30 and the reinforcing member 20 are entirely bonded with the adhesive, but the method of attaching the elastic member 30 to the reinforcing member 20 is not limited to this. However, as in the above embodiment, the elastic member 3
It is preferable that the elastic member 30 is attached by bonding the entirety of the elastic member 30 to the reinforcing member 20, thereby preventing sand, pebbles and the like from entering between the elastic member 30 and the reinforcing member 20.

Further, the reinforcing member 20 and the sleeper body 11
For example, the reinforcing member 20 and the sleeper body are integrally bonded by an adhesive, or the reinforcing member 20 (the reinforcing layer 21) is integrally formed on the sleeper body 11 as shown in FIG. 1 or FIG. It is preferable that the sleeper member 10 is provided with the reinforcing member 20 so that no gap is formed between the sleeper member 11 and the sleeper member 11. Thus, it is possible to prevent the sleeper body 11 from being worn by sand or the like entering between the two, and the vibration of the train passing.

Further, the above embodiment has been described by taking the rail installation structure at a railroad crossing as an example, but the present invention can also be applied to a general rail installation structure. However, the present invention is a railroad crossing,
If applied to the rail installation structure where the load of train passing, etc., is applied to the end of the tie plate 3 from the center, such as a branch,
In such a place, abrasion of the sleeper body 11, which has a significant problem, can be accurately prevented.

In the above embodiment, the sleeper body 11 is made of a fiber-reinforced hard synthetic resin foam, so that it has excellent strength, is lightweight and is easy to handle. However, the sleeper body 11 is made of wood, PC or the like. This is also within the scope of the present invention.

Further, the technical idea of the present invention, in particular, the technical idea of dispersing and absorbing the load and vibration of train passing by the reinforcing member 20 and the elastic member 30 attached to the upper surface thereof, is also adopted in the repair method of the existing sleeper. I can do it. Next, a method of repairing a sleeper in which a dent A has occurred on the upper surface of the sleeper body 11 due to friction with the tie plate 3 as shown in FIG.

First, as shown in FIG. 9 (b), the tie plate 3 biting into the upper surface of the sleeper body 11 is separated from the sleeper body 11, and the concave portion A is cleaned by a grinding means such as a sander. At the same time, the receiving portion 11a of the reinforcing member 20 as shown in FIG. 8 is formed.

The elastic member 30 is separately provided on the reinforcing member 20.
Is attached to form a composite board, and this composite board is attached to the sleeper body 11. Specifically, for example, a composite plate formed by attaching an elastic member 30 made of a rubber plate or the like to the upper surface of a reinforcing member 20 made of, for example, a fiber-reinforced hard synthetic resin (excluding a foam) is attached to the sleeper body 11. The reinforcing member 20 and the sleeper body 11 are housed in the formed housing portion 11a and adhered by an adhesive or the like. According to the method of preparing a composite plate composed of the reinforcing member 20 and the elastic member 30 in advance and attaching the composite plate to the sleeper body 11, the work at the repair site can be simplified.

The sleeper body 11 having the elastic member 30 adhered to the upper surface in this manner is mounted again on the ballast,
The tie plate 3 is placed and fixed on a portion where the elastic member 30 is exposed, and the rail 1 is fastened with a dog nail or the like while the rail 1 is placed on the tie plate 3. This allows
By utilizing the sleeper body 11 in which the dent has occurred, a rail installation structure in which the dent of the sleeper body 11 described in the above embodiment is properly prevented can be obtained.

[0035]

According to the rail installation structure of the present invention, since the hard reinforcement member and the elastic member are located at the portion where the tie plate is mounted on the sleeper, the load of the train passing by the reinforcement member can be accurately determined. It can be dispersed and the occurrence of dents on the sleeper's surface can be reliably prevented.

In the method for repairing an existing sleeper according to the present invention, an elastic member is attached to the upper surface of a hard reinforcing member, and the reinforcing member is attached to a concave portion of the sleeper. The sleeper can be repaired, and the repaired sleeper has a reinforcing member and an elastic member attached to the portion where the tie plate is placed, so that the occurrence of dents on the surface of the sleeper is reliably prevented. .

[Brief description of the drawings]

FIG. 1 is a front view of a sleeper in a rail installation structure according to an embodiment of the present invention.

FIG. 2 is a sectional view of a rail installation structure according to an embodiment of the present invention using the sleeper of FIG. 1;

FIG. 3 shows a front view of a sleeper according to another embodiment of the present invention.

4A and 4B show a sleeper according to another embodiment of the present invention, wherein FIG. 4A is a sectional front view, and FIG. 4B is a sectional side view.

FIG. 5 shows a cross-sectional front view of a sleeper according to another embodiment of the present invention.

FIG. 6 shows a cross-sectional front view of a sleeper according to another embodiment of the present invention.

FIG. 7 is a perspective view including a cross section of a sleeper according to another embodiment of the present invention.

FIG. 8 is a front sectional view of the sleeper body in one step of the method for repairing an existing sleeper according to the present invention.

FIG. 9 is a conventional rail installation structure, in which (a) is a front sectional view, and (b) is an enlarged front sectional view of a waist showing a sleeper and a tight plate.

[Explanation of symbols]

 Reference Signs List 1 rail 3 tie plate 10 sleeper 11 sleeper main body 11a housing portion 20 reinforcing member 21 reinforcing layer 22 metal plate 24 resin layer 25 core material 30 rubber plate (elastic member) A recessed portion

Claims (3)

[Claims] 1. A rail installation structure for holding a rail with sleepers via a tie plate, wherein a hard reinforcement made of a fiber-reinforced hard synthetic resin or the like is provided on an upper surface of the sleeper at least on a portion where the tie plate is mounted. A rail installation structure, wherein a member is provided, and an elastic member such as rubber is interposed between the reinforcing member and the tie plate. 2. A method for repairing an existing sleeper which repairs a concave portion of a sleeper which is generated below a tie plate, wherein an elastic member such as rubber is attached to an upper surface of a hard reinforcing member made of fiber reinforced hard synthetic resin or the like. And repairing the existing sleeper, wherein the reinforcing member is attached to a concave portion of the sleeper. 3. The method of repairing an existing sleeper according to claim 2, wherein the recessed portion of the sleeper is ground with a sander or the like before attaching the reinforcing member to the recessed portion of the sleeper.