JP2592012B2 - Track laying method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a track for repeatedly running a vehicle such as a train, a train, a minecart, etc. over a specific distance.

(Prior Art) As shown in FIG. 5, a conventional track forms a subgrade 15 by excavating and compacting a ground L, then performing earth leveling and embedding gravel, crushed stone, and the like. The sleepers 16 are placed on the sleepers 16 at regular intervals, and the rails 2 and 2 are installed above the sleepers 16. The lower side of each rail 2 is fixed to the sleeper 16 with dog nails 18 supported by fastening plates 17, 17.

As a result, the vehicle load, impact, etc., received by the rail 2
It is dispersed from 16 to the subgrade 15.

(Problems to be Solved by the Invention) However, since the conventional track requires the work of maintaining the subgrade over the entire distance of the laying distance, it takes a lot of time and labor to lay the rails. . Also,
As the vehicle repeatedly passes and loads on the track, the subgrade gradually loosens over time. In addition, the roadbed may be washed away by rainwater, and may collapse due to large swings such as earthquakes.

In order to recover from such loosening and collapse, it is necessary to stop the operation of the vehicle and to work with a great deal of labor and days, resulting in a large loss due to suspension of operation.

The present invention provides a track laying method for easily forming a strong roadbed which does not collapse or flow out in consideration of these circumstances, and laying a rail on an upper portion thereof.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides two parallel rows of sheet piles by press-fitting the adjacent sheet piles into the ground in a state where they are connected to each other. The sheet piles thus formed are connected at regular intervals by a fixing material, and the base plate along the direction of the row row is directly fixed to the upper end of each row row, and then the rail is fixed on each base sheet.

(Operation) Using a self-propelled pile press-in / draw-out machine or the like, the piles are pressed into the ground so that the upper ends of the piles are arranged at a certain height from the ground in a state where the piles are continuous to form a pile of piles. The web portions of the opposing sheet piles of the two sheet piles formed by press-fitting the sheet piles are connected by a fixing material to prevent the sheet piles from opening or narrowing left and right.

The base plate is directly fixed to the upper end of the row of sheet piles. Since the sheet piles of the sheet pile are not pressed by hitting or the like but by press-fitting, no irregularities are formed at the upper end of each sheet pile. Therefore, the base plate can be fixed easily and easily. A rail is fixed to this base plate to form a track. In this method, since the rail is fixed by using the base plate, it is not necessary to mount a concrete plate for supporting the rail and assemble a concrete plate for the rail, or to train the concrete. Further, even when a load or vibration is applied to the track or the sheet pile, the sheet pile stably supports the rail.

(Embodiment) FIG. 1 is a side view for explaining a first step of an embodiment of the present invention, FIG. 2 is a plan view for explaining the second step and the third step, and FIG. It is a longitudinal section front view of the constructed track.

The track laying method of this embodiment includes first to third steps. In the first step, the upper end of each sheet pile P is press-fitted from the ground at a fixed height, and two parallel sheet piles P1, P2 are inserted.
To form

In this embodiment, as shown in FIG. 1 and FIG.
Using a U-shaped steel sheet pile, a self-propelled pile press-in and pull-out machine A,
This is press-fitted simultaneously using two B's. However, the present invention is not limited to this as long as the two sheet piles P1 and P2 can be pressed into the ground in parallel, and another pressing method may be used. In this press-fitting of the sheet piles, adjacent sheet piles in each sheet pile P1, P2 are continuously press-fitted to each other, and since the sheet piles in the sheet piles are connected, the strength of the sheet piles increases. I do.

In the second step, the fixing members 1 are arranged at regular intervals between the press-fitted sheet piles P1 and P2, and the web portions Pw of the sheet piles P facing each other.
Concatenate Pw. In this embodiment, welding is used as the connecting means, but it may be fixed with bolts and nuts.

In the next third step, as shown in FIGS. 2 and 3, the rail 2 is attached to the upper ends of the existing sheet pile rows P1 and P2. At the time of mounting, the base plates 4, 4 are directly fixed to the upper ends of both row rows P1, P2 by welding or bolting, and the rails 2, 2 are placed on the base plates 4, 4. In this case, the base plate 4 is provided along the direction of the rail 2. Both sides of each mounted rail 2 are supported by fasteners 5, and the fasteners 5 are fixed to the base plate 4 by pins 6.
Fixed to Then, a ballast 3 such as gravel or crushed stone is placed between and on both sides of the sheet piles P1 and P2 to complete the track. The arrangement of the ballast 3 is not an essential component of the present invention.

Next, the operation and effect of the present embodiment will be described. The track laid according to the present embodiment has a high supporting force that originally uses the sheet pile P used as a retaining wall or the like as a roadbed. In this embodiment, this sheet pile is used as a self-propelled pile press-in and pull-out machine A,
Since the press-fitting is performed using B, the upper end of the sheet pile P on which the base plate 4 is placed has excellent horizontal ascending accuracy and the construction speed is fast.

That is, the sheet pile that is driven by press-fitting is not driven by hitting, etc.
Flat and without irregularities. The fixing of the base plate 4 to the upper end of such a flat sheet pile does not require an extra operation for repairing irregularities, and can favorably support the base plate 4. Moreover, even if the base plate 4 is directly fixed to the upper end of the sheet pile, the base plate 4 can be reliably supported. Therefore, there is no need to provide any intermediate member such as a spacer or a pedestal between the upper end of the sheet pile and the base plate 4 to secure the support of the base plate 4, and the base plate can be fixed easily and quickly. .

Further, since the opposing sheet piles are connected by the fixing material 1, the parallelism of the sheet pile rows P1, P2 and the rails 2, 2 is accurately maintained. Further, if the sheet piles that are continuously driven are fixed by welding or the like, the sheet piles become stronger.

Therefore, it is not necessary to raise or compact the ground L, and the labor and time required for laying can be greatly reduced. Also, rainwater,
There is no fear of running out, loosening or collapse of the subgrade caused by a load or the like, and damage due to an earthquake can be minimized.

As described above, the present embodiment is most suitable for the construction of a track requiring high endurance, and is not affected by the shape of the ground L even when the laying point is an inclined place as shown in FIG. There is no.

FIG. 4 is a plan view of another example of a track constructed using an H-shaped sheet pile for the sheet pile. In the above embodiment, the track was constructed by using a steel sheet pile for the sheet pile P. As described above, various sheet piles can be used in the present invention, but a joint fitting type sheet pile is desirable.

This embodiment also provides the same functions and effects as those of the above-described embodiment, but by using the H-shaped steel sheet pile, the connection strength between the sheet piles H can be increased, and a larger supporting force can be obtained.

(Effects of the Invention) The present invention can significantly reduce the time required for the work of laying tracks, and since the laid tracks are installed on a sheet pile through a base plate, the effects of collapse or subsidence of the roadbed are reduced. In addition, the orbit can be stably supported even if a natural phenomenon changes. Therefore, it is possible to reduce the damage caused by the collapse or subsidence of the subgrade, and the like.

In addition, according to the present invention, since the sheet piles are constructed by press-fitting the sheet piles, the upper surface of the sheet piles has a regular surface without being damaged. Therefore, the work of restoring the upper end of the sheet pile is not required, and the base plate can be securely fixed. Furthermore, since an intermediate member for supporting the base plate is not required, and the base plate can be directly fixed to the row of sheet piles, the mounting of the base plate can be performed easily and quickly.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view for explaining a first step of one embodiment of the present invention, FIG. 2 is a plan view for explaining the second and third steps, and FIG. FIG. 4 is a longitudinal sectional front view of a track constructed by using an H-shaped sheet pile, and FIG. 5 is a longitudinal sectional front view of a conventional track constructed using an H-shaped sheet pile. P… Pile, P1, P2… Pile row A, B… Self-propelled pile press-in / pull-out machine 1… Fixed material, 2… Rail

Claims (1)

(57) [Claims] 1. An adjacent sheet pile is press-fitted into the ground while being connected to each other to form two parallel sheet piles, and the opposing sheet piles of the sheet pile are connected at regular intervals by a fixing material, and After directly fixing the base plate along the direction of the above to the upper end of each sheet pile row,
A method of laying tracks to fix rails on each base plate.