JPH0348267Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a retaining basket used for earth retaining work.

[Prior Art] In recent years, with the increase in land development, the demand for earth retaining construction has rapidly increased. For such earth retaining work, earth retaining cages called gabions filled with natural stones (chestnut stones) are usually used, but the number of natural stones that can be used for earth retaining work is decreasing year by year, and it is becoming difficult to obtain them. It's summery. Crushed stone has also been used, but such crushed stone is very expensive, and when earth retaining work is carried out in mountainous areas, transportation costs are added, making it even more expensive. Therefore, in recent years, there have been an increasing number of cases in which earth and sand, stones, etc. from around construction sites are filled into earth retaining baskets.

However, the above-mentioned conventional earth retaining baskets, called gabions, are made entirely of diamond-shaped wire mesh and are intended to be filled with stones of a certain size or more, so they are not used by being filled with earth and sand or small stones. Not suitable for things. Moreover, since the diamond-shaped wire mesh is flexible, the surrounding surfaces are likely to bulge and deform by filling with stones, causing various problems. In particular, when the front surfaces of many earth retaining baskets are exposed on a constructed slope, they are most likely to deform because the entire surface is not supported from the outside, and this bulging deformation causes many earth retaining baskets to become uneven. The height of the earth retaining basket is reduced by the amount of bending and deformation, causing the upper earth retaining basket to sink or tilt, which tends to make the slope cluttered and seriously spoil the appearance.

In addition, there is a strong demand for effective use of thinned wood for forest conservation and forestry promotion in the earth retaining works mentioned above. However, there is a need to use organic materials such as the thinned wood mentioned above to promote greening and create a vibrant forest.

However, in earth retaining construction using only thinned wood, it is difficult to create sufficient topsoil and vegetation because the wood rots quickly, which can lead to slope movement and collapse.

[Problems to be solved by the invention] The problem of the invention is to combine organic materials such as thinned wood with wire mesh to ensure that even when earth, sand, gravel, etc. are used as filler, they can be held securely. To provide an earth-retaining basket which can be used for soil retention, does not undergo bulging deformation due to earth pressure, and can maintain its earth-retaining effect over a long period of time even when organic materials decay.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a body net having at least a bottom portion and left and right side portions, a front net and a rear net attached to the body net, and the entire surface. Equipped with an inner net with a small mesh laid over the inside of the net,
The present invention is characterized in that a large number of rods made of natural wood are arranged between the above-mentioned entire surface net and the inner net.

[Function] Earth retaining cages are placed at predetermined locations such as slopes,
The earth retention basket is installed by filling its interior with earth, sand, stones, etc. using an appropriate method.

Filled earth, sand and gravel are caught by the inner mesh with a small mesh to prevent it from flowing out, and the force of earth pressure acting on this inner mesh is supported by the front mesh through the bars. . Therefore, the earth pressure acts evenly on the entire front net through the inner net and the bars, and no bulging deformation occurs therein.

Moreover, since the earth and sand and gravel do not come into direct contact with the bar, the decay of the bar is slowed down and the durability is improved. Moreover, even if the rods rot, the inner net supports the earth pressure to some extent, so that the earth pressure does not act on the rotten rods and accelerate their collapse.

[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.

As can be seen from the exploded view shown in FIG. 1 and the cross-sectional view of the assembled state shown in FIG. A net 3 and a rear surface 4, an inner net 5 disposed inside the front net 3, and a bar 6 made of a large number of natural wood logs and the like disposed between the front net 3 and the inner net 5. It is made up of.

The body net 2 has a bottom part 2a and left and right side parts 2.
b, 2b and an upper surface part 2c, which are made of a flexible wire mesh such as a rhombic wire mesh that is flexible to the extent that it can be easily deformed according to the unevenness of the ground. A bone line 7 is inserted through each ridge, and frame lines 8a, 8 are formed at the edges of both ends of the trunk net 2.
b are attached respectively. This body net 2 is
Although it can be formed by bending one piece of wire mesh into a predetermined shape, it is also possible to form each of the pieces 2a to 2c from independent wire mesh and connect them to each other.

Further, the front mesh 3 and rear mesh 4 attached to the front and rear of the body mesh 2 can be constructed using any wire mesh, but they can also be constructed by filling with earth and stones, such as welded wire mesh or expanded metal wire mesh. It is desirable to form the wire mesh with a rigid wire mesh having a high rigidity to the extent that it does not easily undergo bulging deformation, and in the embodiment, the row lines 12 of the rhombic wire mesh forming the body mesh 2 are of the same or thicker strength. A welded wire mesh formed of large wires 10 and 11 is used. in this case,
Even if the rear surface of the earth retaining basket 1, which is buried in the soil, is slightly deformed, it often does not pose much of a problem in terms of appearance.
Therefore, the rear mesh 4 may be formed using a wire mesh that is less rigid than the front mesh 3.

Furthermore, the inner net 5 is for preventing the earth, sand, gravel, etc. filled in the earth retaining basket 1 from flowing out from the front thereof, and is small enough to prevent the outflow depending on the filling. It is formed from any wire mesh, synthetic resin net, wood, bamboo, or other material with mesh. Although it is desirable that the lower end 5a of this inner mesh 5 is bent toward the rear as shown in the figure, it is not necessarily bent.

The body net 2, the front net and the rear net 4 have an inner net 5 disposed inside the entire surface net 3, and
These front net 3 and inner net 5 are connected to each other with bars 6 piled up between them, thereby assembling a retaining cage 1 as shown in FIG. 2. At this time, the inner mesh 5 can be connected to the front mesh 3 by any means. For example, by connecting the inner mesh 5 to the front mesh 3 with wire or the like between each bar 6, the inner mesh 5 can be connected to the front mesh 3 by any means.
Not only can the inner net 5 be stably arranged one by one, but also the inner net 5 can be reliably installed along each bar 6 even if the thickness of the bars 6 varies. Further, the trunk net 2, the front net 3, and the rear net 4 can be connected by any means. For example, the outermost edges of the front net 3 and the rear net 4 can be The strands 10a and 11a may be connected with appropriate connecting fittings, or as shown in FIG.
The frame lines 8a, 8b are removed from the rings 13 at the ends of the row lines 12 in the body net 2, and the outermost strands 10a, 11a in the front net 3 and rear net 4 are placed between the adjacent row lines 12, 12. The frame lines 8a, 8b are inserted through the ring 13 while being held, and each frame line 8a, 8
A method such as tightening and connecting b is preferably adopted.

In addition, in order to more reliably prevent the bulging deformation of the front screen 3, as shown in FIG.
and the rear screen 4, or between the front screen 3 and the bottom part 2a.
15, 16 between or both.
It is preferable that a tension wire 17 be stretched between the upper end of the front mesh 3 and the lower end of the rear mesh 4.

The earth retaining basket 1 having the above configuration is placed at a predetermined location such as a slope, and after filling the basket with earth and sand, gravel, etc. with the top surface 2c open, the top surface 2c is closed. They are installed in one stage or in multiple stages as shown in Fig. 4.

Here, the earth and gravel filled in the earth retaining basket 1 is received by the inner mesh 5 with a small mesh, and at this time, the earth pressure acting on the inner mesh 5 is supported by the rods 6, and the earth pressure acting on the inner mesh 5 is supported by the rods 6. The material 6 is supported by the front screen 3.

Therefore, the force acting on the front mesh 3 is made uniform and reduced by the bars 6, and local bulging deformation of the front mesh 3 is less likely to occur. Furthermore, as soil and gravel come into contact with the bars 6 through the inner net 5, the rate of decay of the bars 6 slows down compared to when they come into direct contact with each other, and the land is sufficiently stabilized. Even if some of the bars 6 rot, the inner net 5 prevents large earth pressure from acting on the bars 6.
There is no possibility that the soil retaining basket will be locally damaged due to accelerated decay.

Furthermore, organic matter and microorganisms flowing by rainwater etc. stay in the gaps between the inner net 5 and the rods 6, and the synergistic effect of this and the rotting of the rods 6 causes vegetation greening. It will proceed.

In the above embodiment, the body net 2 is formed into a rectangular cylindrical shape, but the upper surface portion 2c may be omitted, and the wire mesh constituting the body net 2 may be the same as described above. The wire mesh is not limited to the diamond-shaped wire mesh, but any wire mesh such as a welded wire mesh or an expanded metal wire mesh can be used.

In addition, as the above-mentioned bar material 6, a log with a diameter of about 10 cm at the end is usually suitable, and although it is common to arrange it horizontally as shown in the figure, it is also possible to arrange it vertically. In this way, the bar 6
The thickness, cross-sectional shape, installation direction, etc. of the earth retaining basket may be determined as appropriate depending on the installation conditions of the earth retaining basket, such as the size of the earth retaining basket and the soil quality of the site.

5 and 6 respectively show other embodiments of the earth retaining basket 1 of the present invention. In the one shown in FIG. The one shown in the figure has a parallelogram shape in which both the front surface mesh 3 and the rear surface mesh 4 are inclined. The inclination angle of these front mesh surfaces 3 is preferably about 73 degrees when considering workability, earth retaining effect, etc., but the angle of the slope to be constructed, etc. It is set appropriately according to the installation conditions of the earth retaining basket.

[Effects of the invention] An inner mesh with a small mesh is placed inside the front mesh, and natural wooden bars are sandwiched between the inner mesh and the front mesh, so earth and sand or small stones can be used as filler. Not only can this be used, but by supporting the earth pressure related to the inner mesh with rods, it is possible to prevent the earth pressure from being applied directly to the front mesh, thereby preventing bulging deformation of the front mesh. I can do it.

In addition, not only can vegetation greening be promoted by the rotting of the rods, but also the rotting of the rods can be delayed by supporting the earth and sand with the inner netting, and the created land can be sufficiently stabilized. I can do it.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view of the earth retaining basket according to the present invention.
Figure 2 is a sectional view of the assembled state, Figure 3 is a perspective view of the main parts showing an example of the assembly method, Figure 4 is a sectional view of the earth retaining basket in use, and Figures 5 and 6 are each of the earth retaining baskets. It is a side view which shows another Example. 1... Earth retaining basket, 2... Trunk net, 2a... Bottom part, 2b... Side part, 3... Front net, 4... Back net, 6... Bar material.

Claims (1)

[Scope of utility model registration request] A body net having at least a bottom portion and left and right side portions, a front net and a rear net attached to the body net, and an inner net with a small mesh installed inside the front net; A dome basket characterized by a large number of rods made of natural wood arranged between the inner net and the inner net.