JPH058282B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Field of Application> The present invention relates to a method of constructing a running track for trains.

<Conventional technology> When laying rails on a concrete track bed, there are the following problems.

<B> Sleepers on the concrete track bed must be installed at the correct height and position.

However, since the planar shape of the concrete track bed is not accurate, determining the height and position of the sleepers while inserting wedges is a time-consuming task.

<B> The sleepers must be fixed by placing filler concrete around the sleepers that have been positioned at the specified height and position.

In this way, a double work is required: setting the surface of the track bed concrete somewhat low and then placing filler concrete.

<C> As the weight of concrete sleepers and filler concrete increases, the load applied to the slab increases.

Therefore, the dimension on the slab side becomes excessive.

<Objective of the present invention> The present invention has been made in order to improve the above-mentioned points, and an object of the present invention is to provide the following method of constructing a vehicle running road.

<A> Construction method that allows easy rail height adjustment <B> Concrete pouring work for slab structure
A construction method that can be completed in just one step and eliminates the need for a second pouring of filler concrete.

<Configuration of the present invention> Next, one embodiment of the present invention will be described with reference to the drawings.

<A> Gate material The gate material 1 is the main girder 1 located in the cross-track direction.
1 and pillars 12 provided vertically at both ends thereof.

The length of the main girder 11 of the gate member 1 is set to be long enough to straddle one set of rails 2.

A wheel 13 is pivotally supported at the lower end of the pedestal 12 by a pin perpendicular to the pedestal 12.

<B> Hanging device The main girder 11 is provided with a hanging device 3 for hanging the rail.

The hanging device 3 is, for example, a bolt 3 installed vertically.
1 and a pawl 32 attached to the lower end of the bolt.

The bolts 31 are slidable along the long holes formed in the main girder 11 in the axial direction of the main girder 11, that is, in the rail transverse direction.

The bolt 31 can be moved up and down by rotating a nut 33 on the top thereof.

Of course, the combination is not limited to the above, and other known devices can be used as long as the main girder 11 can be freely moved up and down in the axial direction.

<C> Connection of gate-shaped members A plurality of gate-shaped members 1 having the same shape and dimensions are installed in parallel, and each gate-shaped member 1 is connected by a connecting member 4 parallel to the direction of the rail.

In this case, by connecting the gate-shaped members 1 and the connecting members 4 through vertical pins or the like instead of rigidly connecting them, it becomes possible to change the angle between each gate-shaped member 1 when passing through a curved portion.

<D> Target A target 5 may be provided at a certain position, preferably at the center, of the first group of portal members.

Although a simple scale may be used as the target 5, it is convenient to use a known target that can be used with a laser surveying instrument to set a straight line.

<Construction method of the present invention> Next, the construction method will be explained.

<B> Equipment on the rail side Attach the fixing plates 21 to the lower surface of the rail 2 via clamps 22 at appropriate intervals.

This fixed plate 21 is different from a sleeper that crosses between rails, and is a small metal plate attached to the lower surface of one rail.

A plurality of vertical bolts are passed through one fixing plate 21, and a nut cylinder 23 is embedded in the lower part of the bolt.
is screwed in to expose it on the lower surface of the fixing plate 21.

<B> Hanging the rails Two fully equipped rails 2 are suspended in parallel using the hanging device 3 of multiple sets of gate materials 1, and the wheels 1 are suspended.
3 to move it forward to the specified position.

<C> Shape of the slab In this case, the slab 6 has a groove 61 for installing the track in the center in the direction of rail extension (Figure 3)
In some cases, the groove 61 is not recessed and the upper surface of the slab 6 is finished in a planar shape (Fig. 4).
The latter will be discussed later.

<D> Concrete pouring After moving the first group of gate materials to the specified position, set the rail center line using target 5.

The suspension device 3 is then moved transversely and vertically to hold the rail 2 in the correct position.

Therefore, the rail 2 is floating in the air within the groove 61.

If concrete is poured into the groove 61 in this state, the embedded nut cylinder 23 on the lower surface of the rail 2 will be embedded in the concrete at the correct position, and the rail 2
fixation is completed.

<E> Other Embodiment 1 (FIG. 4) It is also possible to adopt a configuration in which the formwork 7 is similarly suspended from the gate material 1 on both outsides of the two hanging devices 3.

By fixing this formwork 7 to the lower part of the rod 71 which can slide and move up and down, the concrete pouring range can be easily set.

<F> Other Example 2 (Fig. 5) When constructing a running track for a linear motor train, from the gate material 1 to the reaction plate 8
is suspended, and concrete is poured in such a state that the embedded nut cylinder 81 provided on the lower surface of the reaction plate 8 is buried.

<Effects of the Present Invention> Since the present invention is as described above, the following effects can be expected.

<B> Before pouring concrete, support the rails with gate blocks.

Therefore, height adjustment and transverse position adjustment are extremely easy.

<B> Concrete is poured after a fixing plate to which the rail will be fixed in the future is suspended from the rail, which is suspended in the air at a precise position supported by the gate-shaped material.

Therefore, the rail is in the correct position as designed,
It will be fixed on hardened concrete.

<C> Therefore, there is no need for sleepers to be arranged on slabs and height adjusted as in the future, and there is no need to transport or install sleepers in areas with poor footing.

<D> Since the construction is completed by simply placing slab concrete, there is no need for filler concrete as in the past.

Therefore, unnecessary dead loads are reduced, and the dimensions of the lower structure can be reduced to the minimum necessary.

<E> Since sleepers are not used, the lower height of the rail can be reduced.

As a result, the height of the train floor is lowered, making it possible to lower the height of peripheral equipment such as platforms.

＜F＞ Since the portal has wheels, it can be moved to the next section as soon as the concrete hardens.

Therefore, the time and work required for transporting, setting, and adjusting the rails can be shortened and simplified, thereby shortening the process.

<G> Conventional technology includes a top suspension type in which a rail is mounted on the top surface of the main girder of a rail support device in a direction perpendicular to the main girder, sleepers are attached to the bottom surface of this rail, and then concrete is poured. Construction methods exist.

However, with this method, the main girder is located below the rail in a direction perpendicular to the track, which becomes an obstacle when pouring concrete, and the shape of the formwork is complicated, making the pouring work complicated. .

In contrast, in the present invention, the rails are suspended from the gate material and concrete is poured.
There is no other equipment in the concrete placement space below the rail.

Therefore, there is no problem with concrete pouring, it is only necessary to install formwork on both sides, and the pouring work can be carried out easily.

[Brief explanation of drawings]

Fig. 1: An explanatory diagram of one embodiment of the construction method of the present invention under construction, Figs. 2 and 3: An explanatory diagram of the construction order, Figs. 4 and 5: An explanatory diagram of other embodiments 1... Gate material, 2...Rail, 3...Hanging device, 7...Formwork, 8...Reaction plate.

Claims (1)

[Claims] 1. Before pouring concrete slabs, a rail suspended by a group of portal members is positioned in the slab space, and after setting the height and direction of the rail, the rail is suspended from the rail. A construction method for train tracks that involves placing slab concrete with rail fixing plates buried.