JPH0587628B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a simple artificial ground for planting, which is mainly provided in the roof of a building.

BACKGROUND OF THE INVENTION In recent years, greening has been promoted as part of environmental improvement in cities, and rooftop gardens and promenades with trees have been installed on the roofs of buildings and other structures. Such artificial ground includes, for example, a rooftop made of concrete or the like, filled with lightweight soil material to which lightweight aggregates such as perlite and vermiculite are appropriately added. By the way, it is better for such artificial ground for planting to have less load on the structure of the building.
Therefore, in the past, the layer of lightweight soil material was made as thin as possible to reduce the load on the building.

Problems to be Solved by the Invention However, in the conventional artificial ground as described above, the soil is soft and lacks support strength for trees, and even when reinforced with splints, even the splints become unstable. However, the problem was that the trees could not be adequately supported. In particular, in the case of tall trees that are taller than the height of a human, the soil layer cannot be thickened or the soil is soft, resulting in insufficient anchorage, and if they are shaken by strong winds. The problem was that the plants would not take root and wither, or sometimes fall over.

In view of these problems, the present invention aims to provide a simple artificial ground for planting on which even tall trees can be planted.

Means for Solving the Problems A configuration for achieving the above object will be explained using FIGS. 1 to 6, which correspond to an embodiment of the present invention.

In the present invention, a space 4 is formed between the structures 3, 3, and a net-like support member 5 provided with a nonwoven fiber molded material 9 on one side is arranged in the space 4 at a vertical interval, and It is attached to the structures 3, 3. Moreover, the space 4 is filled with soil material.

Effect By having the above-mentioned structure, moisture easily adheres to the non-woven fiber molded material 9 provided in the net-like support member 5, thereby promoting the development of fine roots of trees, and the fine roots become non-woven. The tree will take root in the fiber molded material 9 and be reliably supported via the net-like support member 5.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings.

In FIG. 2, reference numeral 1 indicates an elevated walkway that constitutes the building according to the present invention, and the basic structure of the elevated walkway 1 is composed of two steel support legs erected on a foundation (not shown) provided below. , 2, a structure 3 such as a truss beam is supported.

In this embodiment, as shown in FIG.
In the space 4 between the structures 3, 3 arranged in parallel, two net-like support members 5, 5 are arranged horizontally with a vertical interval between them.

As this net-like support member 5, one as shown in FIG. 4 is used. That is, to the rectangular support frame 6 is fixed a net main body 8 made of slightly thick net material 7 woven into a hexagonal shape. As this net material 7,
It is desirable to use a material that does not deteriorate in quality due to moisture and has high mechanical properties, especially tensile strength. As such a material, specifically, so-called synthetic resin fibers such as nylon can be considered. Note that the net main body 8 may be made by knitting the above-mentioned net material 7 in a checkerboard shape.

A non-woven fiber molded material 9 is provided on one side of the net main body 8 so as to close the gaps in the net main body 8. The nonwoven fiber molded material 9 is integrally fixed to the net material 7, as shown in FIG. The nonwoven fiber molded material 9 is a nonwoven fabric made of nylon, Tetron (registered trademark), polyester, etc., which is a material that does not easily lose its shape due to moisture and has water permeability, water retention, and strength. It is preferable to use

Further, inside the nonwoven fiber molded material 9, irrigation pipes 10, 10 are arranged vertically and horizontally so that liquid such as water can be discharged into the nonwoven fiber molded material 9.

In this embodiment, the net-like support member 5 having the above-described structure is removably connected to the structures 3, 3 by means of the support frame 6 described above.

Further, the space 4 is filled with lightweight soil material as shown in FIG. This lightweight soil material may be one in which lightweight materials such as vermiculite, perlite, or peat moss are added to field soil, as in the past, or artificial lightweight aggregate with appropriate properties without using field soil at all. It may also be one artificially prepared by. Although not particularly distinguished in the drawings, the composition of the lightweight soil material is divided into the upper and lower mesh support members 5, 5, the intermediate support layer 11 in the middle, the drainage layer 12 in the lower part, and the drainage layer 12 in the upper part. Topsoil layer 13
You may make some changes. In that case, it is preferable to use the intermediate support layer 11 as the basic structure, use a material with excellent drainage properties for the drainage layer 12, and use a material that is difficult to be blown away by the wind for the topsoil layer 13. .

In the figure, 14 indicates lightweight soil material and structure 3,
15 indicates a water collection bottom wall that is continuous with the lower end of the boundary wall 13 and continues in an inclined manner toward the drainage channel 16 provided at the lowest part. There is. That is, the liquid discharged from the irrigation pipe 10 first moistens the nonwoven fiber molded material 9 and then flows out onto the water collection bottom wall 15 via the intermediate support layer 11 or the drainage layer 12. , and is collected in the drainage channel 16 along the water collection bottom wall 15. Note that the water collected in the drainage channel 16 may be circulated to the irrigation pipe 10 described above.

Further, below the water collection bottom wall 15, a bottom plate 17 is provided which extends over the bottoms of the structures 3, 3.

In actual construction, before attaching the lower net-like support member 5, a lightweight soil material is filled on the water collection bottom wall 15 to form the drainage layer 12, and then the lower net-like support member 5 is attached. After installing the
The intermediate portion is again filled with lightweight soil material to form the intermediate support layer 11. Then, on the intermediate support layer 11 thus formed, the upper mesh support member 5 is attached, and finally the topsoil layer 13 is formed.
In that case, when transplanting a seedling that has grown to a certain extent, holes 18 are pre-drilled in the nonwoven fiber molded material 9 provided on the upper net-like support member 5, as shown by the two-dot chain line in FIG. It is preferable to insert the tap root portion of the seedling into the hole 18, and then fix the upper mesh support member 5 to the structures 3, 3. In addition, when growing from seeds, the seeds are scattered on the topsoil layer 13.

Next, FIG. 6 shows a state in which the plants of the present invention are planted on the artificial ground. That is, the main root part 2 of the tree 19
0 passes through the upper net-like support member 5 and reaches the intermediate support layer 11. And its taproot 20
The lateral roots 21, 21... branched out laterally and supported the entire tree 19, and the countless fine roots 22, 22... branched further from the lateral roots 21, 21..., which supported the nonwoven fabric of the upper and lower net-like support members 5, 5. It especially develops near the fiber molded materials 9, 9, and these non-woven fiber molded materials 9, 9
It becomes intertwined with the fibers that make up the fibers. Therefore, the trees 19 are supported not only by the soil parts such as the intermediate support layer 11 but also by the net-like support members 5, 5 supported by the structures 3, 3 through the non-woven fiber molded material 9. It will be supported no matter what.

In this case, if drop irrigation is performed through the irrigation pipe 10, the nonwoven fiber molded material 9 will always be in a moderately moist state, so that the fine roots 2
2, 22... is particularly promoted, and water and nutrients are not only efficiently absorbed, but also the fine roots 22, 22... take root in the non-woven fiber molded material 9 more quickly, and the tree 19 becomes more secure. It will be supported. Further, from the irrigation pipe 10, it is possible to supply liquid fertilizer, which tends to be in short supply in this type of artificial ground, and to inject a pest control chemical solution for preventing insect damage and the like.

Effects of the Invention As described above, in the present invention, a space is formed between structures, a mesh support member supported by the above structure is disposed in the space, and soil is placed in the space. By filling the material with artificial ground for planting, there is not much load on the structure, so it can be used on elevated roads and elevated walkways, where the load is structurally limited unlike buildings. , can form a green belt. Moreover,
By providing the net-like support member with a nonwoven fiber molded material such as a nonwoven fabric that has excellent water retention and water permeability, moisture adheres to the nonwoven fiber molded material, increasing water retention and promoting root development. This has the effect of making it easier for trees to take root. Moreover, the roots are entangled with the non-woven fiber molded material, and the whole tree is supported not only by the soil part but also by the net-like support member through the non-woven fiber molded material, providing sufficient support even against strong winds. It has the advantage of being able to

In addition, as in this embodiment, if the irrigation pipe is arranged in the nonwoven fiber molded material provided in the net-like support member, the nonwoven fiber molded material can be used as an irrigation passage, and water supply, It has the advantage that fertilization and pest control can be carried out in a timely manner, making maintenance management easier.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of the artificial ground of the present invention, Fig. 2 is a schematic front view of an elevated road to which the artificial ground is applied, and Fig. 3 is a similar structure with a mesh support member attached. FIG. 4 is a partially cutaway plan view of the net-like support member according to the present invention, and FIG. 5 is a cross-sectional view of the main part showing the state in which the nonwoven fiber molded material is attached to the net-like support member. , FIG. 6 is a partial cross-sectional view showing the state of planting on the artificial ground of the present invention. 3... Structure, 4... Space, 5... Net-like support member, 9... Non-woven fiber molded material.

Claims (1)

[Claims] 1 A space 4 is formed between the structures 3, 3, and a net-like support member 5 having a non-woven fiber molded material 9 provided on one side is disposed within the space 4 at a vertical interval, thereby forming the above-mentioned structure. 3, 3, and the space 4 mentioned above.
An artificial ground for planting characterized by being filled with soil material.