JP2649076B2 - Construction method of embankment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for constructing an embankment.

<Conventional technology> When laying a railroad or a road higher than the ground, there is a case where a soil or the like is raised to build an embankment, and a railroad or a road is laid on the upper surface of the embankment.

As a method of constructing the embankment, there is a method in which sandbags are piled up at intervals to construct a wall body, and soil and the like are erected between the sandbag walls.

<Problems to be Solved by the Present Invention> A conventional sandbag is obtained by filling a bag body with a filler such as sand manually.

Therefore, formation of sandbags requires a great deal of time and labor.

In addition, if the wall is constructed only by stacking the sandbags, the sandbag wall may fall down due to the earth pressure applied between the sandbag walls, and the embankment may collapse.

<Object of the present invention> The present invention has been made in order to solve the above-mentioned problems, and provides a method for constructing an embankment capable of easily and quickly forming a sandbag and constructing a stable embankment. The purpose is to do.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

<A> Formation of Bag Body (FIG. 2) The bag body 1 is formed of a flexible sheet having at least air permeability, for example, cloth.

The shape and size of the bag 1 are selected according to the scale of the embankment and the like. In this embodiment, a long pillow-shaped bag 1 is formed.

The bag 1 is closed, and a room for filling a filler such as sand is formed inside.

The bag 1 is provided with one or more inlets 11 for a filler such as sand.

The inlet 11 has a pocket shape, and the hose 2 for injecting sand or the like can be inserted therein.

Then, when the hose 2 is pulled out after being filled with sand or the like, the inlet 11 is naturally closed.

<B> Reinforcement Sheet (FIG. 3) The reinforcement sheet 3 is a flexible sheet having water permeability.

The end of the reinforcing sheet 3 is folded in a loop as shown in FIG. 3, and the folded end is fixed by a clasp 31 to form a loop 32.

In addition, a flat portion other than the loop-shaped portion 32 is a flat portion 33.

The width of the reinforcing sheet 3 is substantially the same as the length of the bag body 1 in the longitudinal direction, and the length of the reinforcing sheet 3 in the longitudinal direction is formed so as to obtain a predetermined embankment strength.

Then, the bag 1 is stored in the loop-shaped portion 32 of the reinforcing sheet 3.

<C> Pressure feeding of filler (FIG. 2) Sand 4 or the like is used in the filling of the bag 1.

For example, as shown in FIG. 2, a device for feeding a filling material in which a compressor 22 is connected to a feeding device 21 having a filling hose 2 can be considered.

First, the tip of the hose 2 is inserted into the inlet 11 of the bag 1.

Next, the pumping machine 21 and the compressor 22 are operated, and the sand 4 is charged into the pumping machine 21 by a belt conveyor or the like, and is pumped into the hose 2.

Then, the sand 4 is vigorously squirted into the bag 1 from the end of the hose 2, and the sand 4 can be immediately filled in the bag 1 by the pumping force of the machine.

At this time, since the bag 1 has air permeability, air escapes from the bag 1 to the outside, and only the sand 4 is filled in the bag 1.

After the filling of the sand 4 is completed, the compressor 21 and the compressor 22 are stopped, and the hose 2 is pulled out from the bag 1.

At this time, since the inlet 11 is configured to close naturally when the hose 2 is pulled out, the work of closing the inlet 11 can be omitted.

As another method of feeding the filler, a method of pushing the filler into the bag body 1 using a piston or the like can be considered.

<D> Construction of embankment (Fig. 4) The sandbag-containing reinforcing sheet 3 is placed on the embankment ground.

At this time, the flat portion 33 of the reinforcing sheet 3 is laid so as to be located on the embankment side.

Next, the embankment material 5 such as soil is put on the flat portion 33, the embankment material 5 is rolled by the roller 6, and embankment is performed to the height of the loop portion 32.

Then, the reinforcing sheets 3 containing the sandbags are piled up in a plurality of steps in the same manner, and the embankment material 5 is supplied, thereby constructing an embankment having a predetermined height.

<E> Construction of rigid wall (Fig. 1) A formwork is assembled along the edge of the embankment constructed as described above.

At this time, a space is provided between the mold and the loop-shaped portion 32 of the reinforcing sheet 3.

Then, concrete is poured into the formwork to construct the rigid wall 7 as shown in FIG.

<F> Connection of sandbag and rigid wall (FIGS. 5 and 6) Next, rigid wall 7 and sandbag are connected by connecting rod 8 with a hook.

The connecting rod 8 with a hook is a steel rod or the like having a hook at one end as shown in FIG.

The hook of the connecting rod 8 with a hook is hooked on the reinforcing sheet 3 of the sandbag, and the other end is fixed to the rigid wall 7 so that the rigid wall 7 and the sandbag can be connected.

The fixing of the connecting rod 8 with the hook to the rigid wall 7 is performed by a screw-in type or an embedded type.

The number of connecting rods 8 with hooks is set up and down or laterally according to the scale of the embankment so that the rigid wall 7 and the sandbag can be firmly connected.

<G> Filling of drainage material (Fig. 1) Between the rigid wall 7 and the loop-shaped portion 32 of the reinforcing sheet 3,
A gap is provided in advance.

 This gap is filled with drainage material 9 such as gravel.

This allows drainage of the back surface of the rigid wall 7 and eliminates the risk that the rigid wall 7 will be weakened by flooding or collapsed by water pressure.

<Other Examples> As another example, the inside of the bag 1 may be divided into a plurality of rooms.

In this case, the inside of the bag 1 may be partitioned by a sheet having the same air permeability as the sheet forming the bag 1.

For example, as shown in FIG. 7, according to a method in which the longitudinal end of the sheet is folded inward and the edge is fixed by the clasp 12, the sheet can be easily divided.

By dividing the inside of the bag 1 in this manner, the bag 1
Installation stability can be improved.

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

<B> As in the related art, simply constructing a wall by stacking sandbags may cause the sandbag walls to fall down due to the earth pressure applied between the sandbag walls, and the embankment may collapse.

On the other hand, the present invention has a structure in which a reinforcing sheet is attached to a sandbag and an embankment material is put on the reinforcing sheet.

That is, since the reinforcing sheet is embedded in the embankment material, the reinforcing sheet is fixed in the embankment material by frictional resistance.

Therefore, since the reinforcing sheet is not pulled out, the sandbag can be prevented from falling down, and a stable embankment can be built.

Further, the stability of the embankment can be further improved by connecting the rigid wall and the reinforcing sheet.

<B> In the conventional sandbag, since a bag body is filled with a filler such as sand manually, a great deal of time and labor is required for forming the sandbag.

On the other hand, in the present invention, a filling material such as sand is efficiently filled into a bag having air permeability by a pumping force of a machine.

Therefore, the sandbag can be formed very quickly and easily as compared with the case of the conventional manual operation.

<C> In the present invention, since the filler such as sand can be efficiently filled by the pumping force of the machine, a large-capacity sandbag can be formed in a short time.

<D> When the inside of the sandbag is divided into a plurality of rooms, the installation stability of the sandbag can be improved, and the stability of the entire embankment can be improved.

[Brief description of the drawings]

 Fig. 1: Illustration of one embodiment of the present invention Fig. 2: Illustration of bag body Fig. 3: Illustration of reinforcing sheet Fig. 4: Illustration of construction method of embankment Fig. 5, 6: With hook Illustration of connecting rod Fig. 7: Illustration of another embodiment

Claims (2)

(57) [Claims] An end of a flat portion of a flexible sheet having water permeability is turned up to form a loop portion, and a closed bag is formed by at least a flexible sheet having air permeability. The bag body is placed in the loop-shaped portion, and a filler is filled into the bag body by pressure feeding from an injection port provided in the bag body to form a sandbag. Then, a formwork is assembled along the edge of the embankment, concrete is poured into the formwork to construct a rigid wall, and a connecting rod having a hook at one end is used. An embankment construction method in which a hook is hooked and the other end is fixed to a rigid wall, and the rigid wall and sandbag are connected. 2. The method for manufacturing an embankment according to claim 1, wherein
An embankment construction method in which the inside of a bag installed in a loop of a sheet is divided into a plurality of rooms.