JPS5851086B2 - Ankiyo Oyobi Sonosekohouhou - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a culvert buried in the soil and a method for constructing the same, and its purpose is to facilitate the transportation of materials for constructing the culvert and to simplify its assembly. I can do it,
Moreover, it is an object of the present invention to provide an underdrain that can withstand earth pressure when buried in the soil, and a method for constructing the same.

An embodiment of the present invention will be described in detail below with reference to the drawings.

Reference numeral 1 denotes a net-like sheet made of metal or synthetic resin, which is formed into a regular or long length by ordinary means, or may be an ordinary sheet with a large number of small holes formed therein.

Reference numeral 2 denotes a cylindrical body, which is formed by wrapping the mesh sheet 1 in a single layer in a cylindrical shape and tightening key points around it with a tightening band 5. An annular body 3 is disposed at a certain position, and a cylindrical body 2 is formed by wrapping a mesh sheath 1 around the annular body 3.

The annular body 3 is made of a rigid material such as metal or hard synthetic resin, and has a plurality of protruding claws 6 integrally protruding from its outer peripheral surface. The annular body 3 is engaged to prevent the annular body 3 from slipping within the cylindrical body 2.

As shown in FIGS. 4a and 4b, the tightening band 5 has semicircular metal band bodies 8, 8 whose one ends are pivoted 7 to each other, and whose other ends are connected by a hook engaging part 9 or a latch part 10. In addition to the metal one with a round protrusion 11 on one end, as shown in c and d of the same figure,
One end has a plurality of keyhole-shaped holes 12, one end has a band insertion engagement part 13, and the other end has a concave and convex part 14 for preventing removal.
A synthetic resin fastening band, such as a synthetic resin fastening band 5, is used, and the fastening band 5 may also be a simple wire.

When constructing a culvert, a net-like sheet 1 cut to a desired width is laid in a drainage ditch that has been dug in advance.

Next, the annular bodies 3 are placed on the mesh sheet 1 at intervals necessary to form the cylindrical bodies 2.

Thereafter, the protruding claws 6 on the outer circumference of the annular body 3 are engaged with the mesh of the mesh sheet 1, and the mesh sheet 1 is wound around the annular body 3 to form a cylindrical body 2. The cylindrical body 20 is tightened at arbitrary points with a tightening band 5 to prevent the cylindrical body 20 from coming off, and the culvert is buried in the soil 4 to complete the culvert.

In the above embodiment, the cylindrical body 2 is tightened by the tightening band 5 in order to keep the mesh sheet 1 in the cylindrical state. Also, as shown in FIG. 5, the portion of the net-like sheet 10 corresponding to the bottom of the cylindrical body 2 is made a blind part 15, so that water does not leak from the bottom of the cylindrical body 2. It can be used as a culvert for drainage planting.

In addition, when the cylindrical bodies 2 are used in a connected manner, for example, the connection can be easily made by rolling the reticulated sheets of the cylindrical bodies 2 connected together so as to overlap each other, or by other means. 2 may be connected.

As described above, in the present invention, the mesh sheet is wrapped around the rigid annular body, and the cylindrical body formed thereby is buried in the soil. Since it is only necessary to transport the materials such as bodies, there is no need for the materials to be transported to be bulky, unlike when a cylindrical body is formed in advance. Furthermore, since the annular body is placed inside the cylindrical body, it becomes a core material when the cylindrical body is rolled up with a mesh sheet, simplifying the construction when rolling it in, and when buried in the soil. The annular body has the effect of supporting earth pressure from the inside of the cylinder, regulating the shape of the cylinder so that there is no risk of the cylinder collapsing, and the cylinder is formed by winding and fixing a mesh sheet. By giving the net-like sheet a certain degree of rigidity, it is possible to give the cylindrical body itself the power to withstand earth pressure, and for this reason, the annular body that is the core material does not exist in the axial direction of the cylindrical body. Since the annular bodies can be placed at appropriate intervals at key points, it is easy to bend the cylindrical body to a desired curvature and construct the annular bodies independently. However, since each ring-like body has protruding claws on its outer circumferential surface that engage with the mesh, the ring-like body does not fall inside the cylinder, and the cylinder is held securely. The cylindrical body is formed by winding a mesh sheet into a cylindrical shape, and the annular body has protruding claws that engage with the mesh. It is particularly easy to assemble because it can be wound into a cylindrical shape by engaging the mesh.

[Brief explanation of drawings]

Figure 1 is a sectional view of an embodiment of the present invention, Figure 2 is a perspective view of a mesh sheet used in the embodiment, Figure 3 is a perspective view of an annular body, and Figure 4 ayb is a metal of the same. Fig. 5 is a front view of a tightening band made of synthetic resin, Figures c and d are perspective views of the tightening band made of synthetic resin, respectively, Fig. 5 is a cross-opening of another embodiment of the same, and 1 is a reticulated sheet. , 2 is a cylindrical body, 3 is an annular body, 4
is underground, and 6 is a protruding claw.

Claims (1)

[Scope of Claims] 1. A cylindrical body formed by winding and fixing a mesh sheet into a cylindrical shape and buried in the soil. A plurality of protruding claws on the outer peripheral surface that engage with the mesh of the mesh sheet at key points inside the cylinder. A culvert characterized by being constructed by arranging rigid annular bodies. 2 Wrap a plurality of mesh sheets of appropriate length around a rigid annular body arranged at appropriate intervals, and engage a plurality of protruding claws provided on the outer peripheral surface of the annular body with the mesh of the mesh sheet, and tighten the annular body. A method for constructing an underdrain, which comprises fixing a net-like sheet to form a cylindrical body and then burying the cylindrical body in the soil.