JPH07138901A - Track structure - Google Patents

Abstract

PURPOSE:To precisely install a floating slab easily and rapidly. CONSTITUTION:Height-adjustable supporting legs 6 are provided for a floating slab 1 to horizontally support the slab 1 on a rigid roadbed 5, and a plurality of elastic members 7 provided on the underside of the floating slab l are placed between the roadbed 5 and the floating slab 1 in an uncompressed state to horizontally support the slab 1 by the legs 6. Filling materials 8 such as resin concrete are uniformly provided between the elastic members 7 and the roadbed 5 to install the slab 1 on the roadbed 5, thereby keeping the legs 6 apart from the rigid roadbed 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention supports a rail of a railway on a floating slab made of precast concrete or the like which is preformed to a predetermined size or is formed on-site, and between the rigid roadbed and the floating slab. The present invention relates to a track structure in which a plurality of elastic members that partially support a floating slab are provided.

[0002]

2. Description of the Related Art A track structure of this kind is disclosed in Japanese Patent Laid-Open No.
The one described in Japanese Patent No. 24701 is known. As shown in FIGS. 9 and 10, in a railroad track, a ballast 2 and sleepers 3 are provided on a plate-shaped or frame-shaped floating slab 1 to support a rail 4, and a rigid roadbed 5 and a floating slab 1 are provided. A plurality of rubbers 100 are provided between them. The size of the floating slab 1 is W = 3450 mm, L = 4250 mm, H = 88.
The thing of about 0 mm is used.

[0003]

In the conventional track structure,
Due to the unevenness of the rigid roadbed 5 such as viaducts, bridges and tunnels, in order to install the floating slab 1 horizontally, it is necessary to pad the rubber 100 and the rigid roadbed 5 with resin concrete or the like. Considering the weight of the floating slab 1, the leveling work was extremely complicated and time-consuming.

Therefore, an object of the present invention is to provide a track structure which enables accurate and easy installation of a floating slab.

[0005]

SUMMARY OF THE INVENTION To achieve the above object, the present invention supports a rail on a floating slab that is preformed to a predetermined size, and partially supports the rigid roadbed and the floating slab. In a track structure in which a plurality of elastic members supporting a floating slab are provided, a floating slab is provided with supporting legs whose height is adjustable to horizontally support the slab on a rigid roadbed, and a plurality of floating slabs are provided on the lower surface of the floating slab. The elastic material of is not compressed between the rigid roadbed and the floating slab, and the floating slab is supported horizontally by the support legs so that there is no uneven part in the gap between the elastic material and the rigid roadbed. Place the floating slab on the rigid roadbed with the padding, and keep the support legs away from the rigid roadbed. One in which was supported by the elastic material.

[0006]

Operation: The floating slab is installed horizontally on the rigid roadbed by adjusting the support legs. When the rigid roadbed is dented, the supporting legs are lengthened, and when it is raised, it is shortened to keep the floating slab horizontal. After that, the gap between the elastic material provided on the lower surface of the floating slab and the rigid roadbed is filled with padding so that there are no uneven points, and if the support legs are retracted, the floating slab is kept horizontal by the elastic material. Will be supported.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, the ballast 2, as in the conventional case,
Floating slab 1 with sleepers 3 and rails 4 installed
Are installed on the rigid roadbed 5, and at this time, the floating slab 1 is provided with a plurality of height adjustable support legs 6 for horizontally supporting the slab 1 on the rigid roadbed 5, and the support legs 6 are rotated. Then, the floating slab 1 is adjusted to be horizontal and the elastic members 7 provided on the lower surface are adjusted so as not to be compressed. When the floating slab 1 is installed on the rigid roadbed 5 by the supporting legs 6, a padding 8 such as resin concrete is applied to the gap between the plurality of elastic members 7 provided on the lower surface of the floating slab 1 and the rigid roadbed 5. . The padding 8 can be easily installed because the floating slab 1 is supported by the support legs 6.

As the elastic material 7, a laminated rubber in which metal plates 7A and rubber 7B are alternately laminated as shown in FIG. 2 is preferably used. The upper metal plate 7A and the lower metal plate 7A have a large diameter, the upper metal plate 7A is attached to the floating slab 1, and the lower metal plate 7A is resin concrete in the case of an unplanned portion. It is fixed to the rigid roadbed 5 via a padding 8 such as. It is also possible to use a vibration-isolating rubber or a vibration-proof rubber.

FIG. 3 shows an example in which the support legs 6 are provided at four corners of the floating slab 1, and FIG. 4 shows the support legs 6.
This shows an example in which three points are provided.

FIG. 5 shows an example in which a bolt is used as the support leg 6 and a receiving seat 6A is provided at the tip of the bolt. The floating slab 1 is embedded with a nut member 6B into which the bolt is screwed.

FIG. 6 shows an example in which a screw jack is used as the support leg 6.

In any of the above-described bolts and screw jacks, the support leg 6 is for adjusting the floating slab 1 to a predetermined height from the rigid roadbed 5, and by adjusting these support legs 6. The floating slab 1 can be supported horizontally. When the floating slab 1 is horizontally supported, the gap between the elastic material 7 and the rigid roadbed 5 is filled up, and then the support legs 6 are retracted, so that the floating slab 1 is kept horizontal and the elastic material 7 is used for the rigid roadbed 5. It is supported horizontally on top.

In FIG. 7, a supporting leg 6 and an elastic member 7 are provided on a semi-finished slab frame 20 of only the framework of the floating slab 1 so that the elastic member 7 is not compressed by the supporting leg 6, respectively. The slab frame 20 is supported horizontally, and a padding 8 such as resin concrete is applied to the unsupported portion of the elastic material 7. After the filling 8 is applied, concrete is poured into the slab frame 20 to complete the floating slab 1. At this time, a reinforcing material 21 or a urethane chip may be set in advance in the slab frame 20 in order to reduce the weight. Also, a so-called Dramix (trademark of Dramix), in which fibers having hooks at both ends are stuck together with a water-soluble adhesive, is stirred in a concrete mixer and uniformly dispersed in concrete for use. You can also

As a case where the slab frame 20 is used,
When installing in a tunnel, the workability is better if the slab frame 20 that is lighter than the extremely heavy floating slab 1 is carried in and concrete is placed in the tunnel to form the floating slab 1. Can be considered.

In FIG. 8, a bolt 9 screwed into the floating slab 1 is provided between the elastic material 7 and the floating slab 1, and the height of the floating slab 1 from the rigid roadbed 5 is adjusted by rotating the bolt 9. With the floating slab 1 supported horizontally on the rigid roadbed 5, the space between the floating slab 1 and the elastic material 7 is filled with resin padding 8 such as resin concrete.
It shows an example of applying. The bolt 9 is screwed into the nut member 6B embedded in the floating slab 1. By rotating the bolt 9, the heights of the floating slab 1 and the rigid roadbed 5 are adjusted to keep the floating slab 1 horizontal. If the floating slab 1 is kept horizontal, the nut 10 is fastened to the bolt 9 and the packing 11 is provided so as to surround the gap formed between the floating slab 1 and the elastic material 7. The filling 8 such as resin concrete is filled through the injection port 12. In the structure shown in FIG. 8, supporting legs 6 may be provided on the floating slab 1 as shown in FIG. Of course, only the structure shown in FIG. 8 may be used. The slab frame 20 may have a similar structure.

[0017]

As described above, according to the present invention, the floating slab is provided with the height adjustable support leg for horizontally supporting the slab on the rigid roadbed, and the support leg horizontally supports the floating slab. In this condition, the elastic slabs are elastic because the padding is adjusted between the elastic material and the rigid roadbed and adjusted so that there are no uneven points, and then the supporting legs are moved away from the rigid roadbed. The work of horizontally supporting the material becomes easy and quick. In addition, a bolt is provided between the elastic material and the floating slab or slab frame, and the height of the floating slab or slab frame from the rigid roadbed can be adjusted by screwing this bolt into the floating slab or slab frame. In the state in which the slab is supported horizontally on the rigid roadbed and the gap formed between the floating slab or slab frame and the elastic material is filled with resin concrete or the like, between the elastic material and the rigid roadbed. It is much easier and quicker than the conventional leveling work where filling is done. When using the slab frame, workability is improved when installing the track structure in the tunnel.

[Brief description of drawings]

FIG. 1 is a front view showing a preferred embodiment of the present invention.

FIG. 2 is a sectional view of a portion of an elastic material.

FIG. 3 is a plan view showing a place where a support leg is installed.

FIG. 4 is a plan view showing an example in which the installation location of the support leg is changed.

FIG. 5 is a sectional view of a portion of a support leg.

FIG. 6 is a cross-sectional view showing another example of the support leg.

FIG. 7 is a perspective view when a slab frame is installed.

FIG. 8 is a cross-sectional view showing an example in which a bolt is provided on an elastic material.

FIG. 9 is a perspective view showing a conventional example.

FIG. 10 is a sectional view showing a conventional example.

[Explanation of symbols]

 1 Floating slab 5 Rigid roadbed 6 Support legs 7 Elastic material 8 Stuffing 9 Bolts

Claims (3)

[Claims] 1. A track structure in which a rail is supported on a floating slab formed in advance to a predetermined size, and a plurality of elastic members for partially supporting the floating slab are provided between a rigid roadbed and the floating slab. The floating slab is provided with supporting legs whose height can be adjusted horizontally to support the slab on the rigid roadbed, and a plurality of elastic materials provided on the lower surface of the floating slab are compressed between the rigid roadbed and the floating slab. The floating slab is supported horizontally by the support legs in a state where it is not installed, and the floating slab is installed on the rigid roadbed by filling it with resin concrete or the like so that there is no uneven part in the gap between the elastic material and the rigid roadbed. A track structure characterized in that the legs are kept away from the rigid roadbed and the floating slab is supported by elastic material. 2. A track structure in which a rail is supported on a floating slab and a plurality of elastic members are provided between the rigid roadbed and the floating slab to partially support the floating slab, which is a semi-finished product of the floating slab. The slab frame is provided with supporting legs whose height can be adjusted horizontally for supporting the slab frame on the rigid roadbed, and a plurality of elastic materials provided on the lower surface of the slab frame are compressed between the rigid roadbed and the slab frame, respectively. The slab frame is supported horizontally by the support legs in the unloaded condition, and the floating slab is installed on the rigid roadbed by filling it with resin concrete or the like so that there are no uneven points in the gap between the elastic material and the rigid roadbed. A concrete feature is that concrete is cast into the frame to form a floating slab, the supporting legs are kept away from the rigid roadbed, and the floating slab is supported by elastic material. Orbit structure to be. 3. A bolt screwed into the floating slab or the slab frame is provided between the elastic material and the floating slab or the slab frame, and the height of the floating slab or the slab frame from the rigid roadbed can be adjusted by rotating the bolt. With the floating slab supported horizontally on a rigid roadbed, fill the gap formed between the floating slab and the elastic material with resin concrete or the like, and in the case of a slab frame, pour concrete into the slab frame. The track structure according to claim 1 or 2, wherein the track structure is provided to form a floating slab.