JPH04281902A - Track construction without ballast - Google Patents

Abstract

PURPOSE:To easily correct the rail level when paved concrete subsided. CONSTITUTION:A track girder 1 in which protrusions 2 made of concrete for sleepers and recessions 3 made of concrete for installation of adjusting sleepers are provided in turn, is installed as a unit at the placing position of respective rails of the paved concrete 6 to lay the rails on the protrusions 2. When the track girder 1 is a ready made material, it is united with the paved concrete 6 through a supporting concrete 7. The track girder 1 may be formed by cast in place concrete.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing tracks for railways and the like.

0002

[Prior art and its problems] It is known that tracks are constructed using track slabs without ballast, but in tracks using track slabs (slab track), the pavement concrete supporting the track slabs In order to correct the height of the rail surface when the track slab sinks, it is necessary to replace the filling layer of asphalt concrete that is interposed between the track slab and the paving concrete, and this work is quite difficult and requires a lot of effort. It requires time and money.

0003

OBJECTS OF THE INVENTION An object of the present invention is to provide a method of constructing a track without using ballast, which makes it easy to correct the height of the rail surface when the paving concrete sinks.

0004

[Structure of the Invention] The method of the present invention is to lay track girders made of concrete and having convex portions for sleepers and concave portions for installing adjustment sleepers alternately in the length direction, on the top surface of paving concrete, for each rail. It is characterized by being installed integrally at a certain position and laying rails on the convex portion, and can be applied to both the construction of new tracks and the renovation of existing tracks, and its implementation. In this case, the track girder may be a ready-made product or may be formed from cast-in-place concrete.

[0005] When the paving concrete of the track constructed by the method of the present invention sinks and it becomes necessary to correct the height of the rail surface, remove the rail laid on the convex part of the track girder, After inserting and installing the adjustment sleeper of the required dimensions into the recess, you can move the rail onto the adjustment sleeper.
The work is relatively simple.

[0006]

[Description of Examples] In FIG. 1, which is an explanatory diagram of the case where the present invention is implemented using a ready-made product for the track girder, the track girder 1 is a precast material with a length of 5 to 7 m and a weight of about 2 tons. ,
Convex portions 2 for sleepers and concave portions 3 for installing adjustment sleepers are alternately formed in the length direction, and bolt mounting holes 4 and 5 are provided on the top surface of the convex portion 2 and the bottom surface of the concave portion 3, respectively. It is provided.

[0007] The track girder 1 produced at the factory is delivered to the site and installed accurately at the position of each rail on the paving concrete 6, and each rail (not shown) is laid using the protrusions 2 as sleepers. At this time, when the rail surface is at a predetermined height, a gap is created between the track girder 1 and the paving concrete 6, and the surface of the paving concrete 6 is Make adjustments if the accuracy of the level is poor.

That is, the track girder 1 is moved up and down at the installation position using appropriate means to adjust the rail surface to a predetermined height, and then the supporting concrete is placed in the gap between the track girder 1 and the paving concrete 6. 7 is cast to integrate the track girder 1 and the paving concrete 6.

If the paving concrete 6 of the track constructed as described above sinks and it becomes necessary to correct the height of the rail surface, once the rail is removed, the recess 3
An adjustment sleeper 8 of a predetermined size is inserted and installed (see FIG. 2), and the rail is transferred onto this adjustment sleeper 8.

The adjustment sleeper 8 is made of concrete, has a height corresponding to the depth of the recess 3 plus the amount of settlement of the paving concrete 6, and a width corresponding to the width of the recess 3, and has bolt holes for installation. Bolt holes for rail fastening are provided.

[0011] If it becomes necessary to correct the height of the rail surface again, the convex portion 2 may be used to correct the height.

0012

[Effects of the Invention] Since the method of the present invention is as described above, in addition to the general effect that it is possible to construct a track that is easy to maintain by not using ballast, the method of the present invention has the following effect: An excellent effect can be expected in that it is possible to construct a track in which the height of the rail surface is simple and easy to correct. It is simple.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a ready-made track girder installed on paving concrete.

FIG. 2 is a side sectional view showing how the adjustment sleeper is inserted and installed.

[Explanation of symbols]

1: Track girder, 2: Protrusion, 3: Recess, 4, 5: Bolt mounting hole, 6: Paving concrete, 7: Supporting concrete, 8: Adjustment sleeper.

Claims (4)

[Claims] [Claim 1] A track girder made of concrete and having convex parts for sleepers and recesses for installing adjustment sleepers alternately in the length direction is installed integrally at each rail laying position on the upper surface of the paving concrete. A method for constructing a track without using ballast, comprising: laying a rail on the convex portion. 2. The method of constructing a track without using ballast according to claim 1, wherein ready-made materials are used for the track girders and are integrated with paving concrete via supporting concrete. 3. The method of constructing a track without using ballast according to claim 1, wherein the track girder is formed using cast-in-place concrete on existing paving concrete. 4. The method of constructing a track without using ballast according to claim 1, wherein both the track girder and the paving concrete are made of cast-in-place concrete.