JPH11336001A - Sleeper and track structure using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the track skeleton rigidity of an entire track and prevent uneven settlement between respective sleepers. SOLUTION: Concrete sleeper bodies in which bolts protruding to the same direction with rails are embedded at positions corresponding to the right and left rails are laid in the direction crossing the rails at right angles on the ballast of a ballasted track, and plates 5 are inserted between the bolts 3 protruding from the sleepers to fasten them with nuts 4. Mutual plates 5 of adjacent sleeper bodies 2 are connected to each other by connection members 7 such as I-shaped steel or the like. Then, rails are laid on the sleeper bodies 2 and the entire track composed of the ballast, the sleepers, and the rails is integrally united. In this way, the load of trains can be relievably dispersed to the whole body of these sleepers through the connection members 7, and differential settling (uneven settlement) between respective sleepers can be eliminated and further, the rigidity of the whole track skeleton composed of the ballast, the sleepers, and the rails is increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a track on which a concrete sleeper is laid on a track bed of a ballast track and rails are installed. It is related to the technology as described above.

[0002]

2. Description of the Related Art Normally, a ballast track of a railway is constructed by laying a ballast made of gravel, crushed stone, etc. on a roadbed as a base, and constructing a track bed. Rails are attached in parallel at regular intervals. In such a ballast track, the rails and sleepers sink down to some extent due to the load of the passing train and the like.
The amount of settlement differs depending on the degree of tightness of the ballast, the size and rigidity of the sleeper, the rail rigidity, and the like. That is, the amount of subsidence of the track when the train passes varies depending on the rail stiffness of the entire track including the trackbed, sleepers and rails.

Moreover, in the conventional ballast trajectory, each sleeper is separated and exists independently.
The amount of settlement differs between the sleepers, causing so-called uneven settlement. When such uneven settlement occurs, the height of the rail surface through which the train passes varies, which affects the running safety of the train, and the running speed of the train is limited, and the riding comfort is deteriorated. There is. For this reason, conventionally, in order to equalize the variation of the rail stiffness between the sleepers, which causes such uneven settlement, a maintenance vehicle such as a multiple tie tamper or a manual operation of a worker is performed every predetermined period. The ballast was being refilled and compacted.

As another conventional method, there is a method in which an elastic body is attached to the bottom of a sleeper, and the load when a train passes is received and absorbed by the elastic body, thereby suppressing the unequal settlement. As another conventional method, there is a pavement track or a slab track using pavement of a roadbed or using a concrete slab itself. As for the pavement track and the slab track, the track structure itself is a fixed structure, so that even if a load accompanying the passage of a train acts, it does not cause uneven settlement.

[0005]

However, in the above-mentioned conventional ballast track, the maintenance and inspection work of the track to suppress uneven settlement must be performed periodically and on the entire track, so that much time and labor are required. Costly, and the repair cost is high. On the other hand, with the conventional technology of attaching an elastic body to the bottom of sleepers, individual sleepers alone have the effect of suppressing uneven settlement, but when looking at the entire sleeper, uneven settlement occurs, and repairs accompanying this Could not be avoided. Further, the pavement track and the slab track have a drawback that the entire track must be constructed as a building structure, which requires a considerable period and cost.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems and has been improved and eliminated. In this invention, adjacent sleepers are connected by a connecting member along a rail direction, and the track of the entire track is connected. It is an object of the present invention to provide a technique for preventing unequal settlement between the sleepies by increasing rigidity today.

According to the first aspect of the present invention, there is provided a concrete sleeper which is installed on a track bed of a ballast track at right angles to a rail direction. The sleeper according to claim 1, wherein a bolt protruding in the same direction as the rail is buried at a position corresponding to the rail. The sleepers can be connected to each other by using the bolts.

A second aspect of the present invention is to provide a concrete sleeper in which bolts projecting in the same direction as the rails are buried at positions corresponding to the left and right rails, and the concrete sleepers are mounted on the ballast track bed at right angles to the rail direction. At the same time, insert the plate into the bolt protruding from the sleeper and fasten with a nut, connect the adjacent sleeper plates with a connecting member such as I-shaped steel, install a rail on the sleeper, This is a track structure characterized by integrating the entire track consisting of sleepers and rails and increasing its track rigidity. By connecting the neighboring sleepers with the connecting member, the train load can be dispersed and alleviated through the connecting members through the connecting members, and the variation in the amount of settlement between the sleepers can be eliminated.
That is, uneven settlement can be eliminated. Further, the stiffness of the entire track including the track bed, the sleeper and the rail is remarkably improved, and the interval of the periodic maintenance and inspection work of the ballast track can be greatly extended, and the burden can be remarkably reduced.

According to a third aspect of the present invention, a connecting member for connecting adjacent sleeper plates is cut in the middle, and the cut portion is welded or connected directly or via a seam plate of a metal plate. 3. The track structure according to claim 2, wherein the track structure is connected by bolts and nuts. By doing so, the sleeper laying work and the sleeper connection work can be separated and the period can be extended, which is convenient in the construction work.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to the embodiments of the invention shown in the drawings. 1 and 2 relate to a first embodiment of the present invention. FIG. 1 (A) is a plan view of a connected sleeper, and FIG. 1 (B) is a longitudinal sectional front view thereof. FIG. 2 (A)
Is a perspective view of a partial cross section of the plate and the connecting member, FIG. (B) is a front view of the vertical cross section, and FIG. (C) is a plan view of the horizontal cross section. As shown in the figure, the sleeper 1 has a buried bolt 3 protruding in the same direction as the rail at a position corresponding to the left and right rails of the sleeper body 2. In this embodiment,
A total of eight bolts 3 are provided, four on each of the left and right sides of the sleeper body 2. Both ends of each bolt 3 protrude forward and backward of the sleeper body 2 so that the nut 4 can be screwed thereon. The sleeper body 2 is made of prestressed concrete.
It has a size of 00 mm, a height of 200 mm, and a total length of 2400 mm.

The bolt 3 of the sleeper body 2 is
Is fastened. The plate 5 is provided with two U-shaped grooves 6 which can be inserted into the bolt 3 from above or below (the drawing shows a case where the plate 3 is inserted from above). A connecting member 7 such as an I-shaped steel is integrally attached between the grooves 6 and 6 by welding. The plate 5 attached to the adjacent sleeper body 2 is also integrally attached to the other end of the connecting member 7 by welding. Therefore, when the U-shaped grooves 6 of the plates 5 and 5 welded to both ends of the connecting member 7 are inserted into the bolts 3 of the adjacent sleepers 2 and 2 and fastened with the nuts 4, the adjacent sleepers The two and two are integrally connected by a connecting member 7 such as an I-beam. When all the sleepers 2 laid on the ballast ballast are connected in a similar manner, the rigidity of the entire sleeper can be increased, and the train load does not concentrate on one sleeper body 2 but is distributed to each sleeper body 2. It also has the effect of being relaxed.

Also, an I connecting the sleeper bodies 2 to each other
The bottom area is increased by the amount of the connecting member 7 such as a shape steel, and the train load is more effectively dispersed and alleviated to the roadbed by that much. The rate of increase in the bottom area depends on the connecting member 7 such as I-beam used.
When used for sleepers for Shinkansen, the commercially available I-beam is cut into a height of 200 mm, a width of 150 mm, and a length of 280 mm. In this case, the bottom area of the connecting member 7 is 840 cm ² , which is equivalent to 12% of the bottom area of the sleeper body 2 for the Shinkansen. In addition, the connecting member 7 that connects the adjacent sleeper bodies 2 acts as a resistance to the lateral movement of the sleeper bodies 2 accompanying the train passing, and has an effect of suppressing this.
In short, when such a track structure and its operation and effect are viewed from the viewpoint of the entire track, the rail stiffness composed of the ballast roadbed, the sleeper body 2 and the rail is greatly improved. As a result, it is possible to greatly reduce uneven settlement in which the amount of settlement between the sleepies of the ballast track is different, and it is possible to realize safe traveling of the train and comfortable and comfortable traveling.

FIG. 3 shows a second embodiment of the present invention. FIG. 3 (A) is a plan view of the sleeper bodies 2 connected to each other, and FIG. 3 (B) is a side view of the same. In this embodiment, a connecting member 7 such as an I-shaped steel for connecting adjacent sleeper bodies 2 is cut at an intermediate position, and the cut connecting member 7 has a web (a vertical connecting upper and lower parallel flanges). Parts), seam plates 8, 8 disposed on both side surfaces thereof, and bolts 9 and nuts 1 penetrating therethrough.
0 is mutually connected. Thus, by cutting and separating the connecting member 7 on the way,
The plate 5 and the cutting member 7 previously cut to the sleeper body 2 are fastened with bolts 3 and nuts 4 to form a single unit, which is shipped from the factory in this state, transported to the site, and the seam plate 8 , 8 and bolts 9 and nuts 10 to integrally connect the sleeper body 2 as a whole.

Thus, the construction work at the site can be simplified, the burden on the workers can be reduced, and efficient work can be realized. Also, the sleeper body 2 in a unitized state can be laid first on the ballast ballast, and then the connection members 7 cut and separated can be connected to each other. The work of laying the sleeper body 2 and the connection of the sleeper body 2 to each other Since the operation can be performed separately from the operation, it is possible to flexibly cope with a change in the process. Further, when the sleeper body 2 needs to be individually replaced during track maintenance and inspection, the structure can be separated at the intermediate portion of the connecting member 7, so that the tool does not interfere with the rail and can be smoothly performed. Is possible. The other configuration and operation and effect are the same as those of the first embodiment.

Incidentally, the present invention is not limited to the above-described embodiment, and can be appropriately changed. For example, a plurality of sleeper bodies 2 may be integrally connected by a plate 5 and a connecting member 7 to form a unit, which may be carried to the site and constructed. The type and size of the connecting member 7 to be used can be appropriately changed according to the size of the sleeper body 2 and the type of track such as a bullet train or a conventional line. Further, in a method in which the connecting member 7 is cut in the middle and connected to each other at a site or the like,
The cut connecting members 7 may be directly connected to each other by welding. An end plate parallel to the sleeper is attached to the cut portion by welding or the like, and the end plates are brought into abutment with bolts and nuts. You may make it connect. Further, the connecting member may be made of a material such as a synthetic resin such as NC nylon or another alloy as long as it has sufficient rigidity other than the I-shaped steel.

[0016]

As described above, in the present invention,
A concrete sleeper with embedded bolts protruding in the same direction as the rail direction at positions corresponding to the left and right rails,
While laying on the track bed of the ballast track perpendicular to the rail direction, inserting a plate into bolts protruding from the sleeper and fastening with nuts, connecting the adjacent sleeper plates with a connecting member such as I-shaped steel, Since the rails are installed on the top and the entire track consisting of the trackbed, sleepers and rails is integrated, the train load can be dispersed and alleviated through these sleepers through the connecting members, and the amount of settlement between the sleepers varies. (Unequal settlement) can be eliminated. In addition, the stiffness of the entire track including the track bed, the sleepers and the rails is remarkably improved, and the interval between regular maintenance and inspection work on the ballast track can be greatly extended, and the burden on the track can be significantly reduced. Further, the connecting member has an effect of suppressing lateral movement of the sleeper body.

In the present invention, a connecting member for connecting adjacent sleeper plates is cut in the middle, and the cut portion is welded directly or via a seam plate of a metal plate. Since the connection is made by bolts and nuts, the sleeper laying work and the sleeper connection work can be separated and performed with a longer interval, which is convenient for the construction work.

[Brief description of the drawings]

FIG. 1 relates to a first embodiment of the present invention,
Fig. (A) is a plan view of the connected sleeper, and Fig. (B) is a longitudinal sectional front view thereof.

FIG. 2 relates to the first embodiment of the present invention,
FIG. 1A is a partial cross-sectional perspective view of a plate and a connecting member, FIG. 1B is a vertical cross-sectional front view, and FIG. 1C is a horizontal cross-sectional plan view.

FIG. 3 relates to a second embodiment of the present invention,
FIG. (A) is a plan view of the sleeper bodies connected to each other, and FIG. (B) is a side view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... sleeper 2 ... sleeper main body 3 ... bolt 4 ... nut 5 ... plate 6 ... U-shaped groove 7 ... connecting member such as I-shaped steel 8 ... joint plate 9 ... bolt 10 ... nut

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenzo Tokuoka 2-4-2, Shibata, Kita-ku, Osaka City Inside West Japan Railway Company (72) Inventor Yasuhiro Okamura 2-4-2, Shibata, Kita-ku, Osaka City No. West Japan Railway Company (72) Inventor Shinichi Handa 2-4-2 Shibata, Kita-ku, Osaka City Inside West Japan Railway Company (72) Inventor Torazaburo Ide 2-4-1 Shibata, Kita-ku, Osaka City 24 West Japan Railway Company (72) Inventor Katsutoshi Ando 2--8 Hikaricho, Kokubunji-shi, Tokyo 38 Within The Railway Technical Research Institute (72) Takahiro Horiike 2--8 Hikaricho, Kokubunji-shi, Tokyo No. 38 Inside the Railway Technical Research Institute (72) Inventor Kenichi Takao 2-8 Hikaricho, Kokubunji-shi, Tokyo, Japan 38 Inside the Railway Technical Research Institute (72) Inventor Masayuki Kusuda 2-8-8 Hikarimachi, Kokubunji-shi, Tokyo 38 Within the Railway Technical Research Institute (72) Inventor Tadatomo Watanabe 2-7-60 Miyanomori, Chuo-ku, Sapporo, Hokkaido

Claims (3)

[Claims] In a concrete sleeper which is installed on a track bed of a ballast track at right angles to a rail direction, bolts projecting in the same direction as the rail direction are buried at positions corresponding to left and right rails of the sleeper body. A sleeper that is characteristic. 2. A concrete sleeper in which bolts projecting in the same direction as the rail direction are buried at positions corresponding to the left and right rails, and the concrete sleeper is laid perpendicular to the rail direction on the ballast track bed and protrudes from the sleeper. Insert the plate into the bolts, fasten with nuts, connect the adjacent sleeper plates with connecting members such as I-shaped steel, install the rail on the sleeper, and integrate the entire track consisting of the roadbed, sleeper and rail A track structure characterized by increased rail rigidity. 3. A connecting member for connecting adjacent sleeper plates is cut in the middle, and the cut portion is welded directly or through a seam plate of a metal plate or the like with bolts and nuts. Claim 2 adapted to be connected
Orbital structure described in 1.