JPH0351423A - Banking forming method and forming material - Google Patents

Abstract

PURPOSE:To easily form a uniform face of a steep slope with less efforts and labor by installing molds formed by integrating a L-shaped frame and a lattice like member on a slope forming sections, and filling up the space behind the molds. CONSTITUTION:A plastic network-material 1 is laid on the ground, plural molds 7 formed by integrating L-shaped frames and lattic-like members are joined in series, and installed on a slope-face forming section 1a of the network- material 1. Further, plastic nets 8 are arranged along the molds 7. After earth and sand 3 are filled up on a banking forming section 1b and the bottom face of the mold 7, and then compacted, the end part 1c of the network-material 1 is bent backward so as to wrap the mold 7. After the earth and sand are compacted, a next-stage network-material 1 is laid on the compacted earth and sand, and lapped on the end part 1c of the lower-stags network-material 1 to be joined to it by a joining member 4. The process is repeated to fill up the earth and sand to form a banking.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an embankment forming method for reinforcing an embankment with a plastic net-like material, and in particular to an embankment forming method and forming material capable of forming a steep slope.

[Conventional technology]

FIG. 7 is a partially cutaway perspective view of an embankment formed by a conventional embankment forming method using a plastic mesh.

In the conventional embankment formation method, a flexible plastic net 1 is laid on the ground, a sandbag 2 for shaping the slope is placed on the slope forming part 1a on the plastic net 1, and the sandbag is After filling the earth and sand 3 on the embankment forming part ib of the plastic net-like material 1 inside the plastic net-like material 1 and applying tension, the end portion 1c of the plastic net-like material 1 is rolled back so as to wrap around the sandbag 2, and placed on top of the stressed embankment. The plastic net-like material 1 of the next stage is laid down and joined to the rolled-back end portion 1c of the lower stage using the joining member 4, and this operation is repeated one after another to form a slope.

If an embankment is formed using this method, it takes a lot of effort and effort to prepare and install the sandbags 2, and the slope formed by the sandbags 2 tends to have unevenness, making it difficult to create a uniform slope. Difficult to shape.

Furthermore, Japanese Patent Publication No. 11488/1988 discloses a method using an L-shaped net member whose sides are joined by rod-shaped members. In this method, an L-shaped net member with an angle corresponding to the slope is installed at the slope formation position, earth is embanked inside the net member, and the tensile layers are stacked in multiple stages to create a steep slope. Embankments with slopes can be shaped.

However, in an embankment formed by arranging the net members in this way, the lower net member deforms due to compression, subsidence, etc. of the embankment, making it difficult to connect it with the second-tier net member.
Therefore, there were problems such as not being able to obtain sufficient strength on the slope.

[Problem to be solved by the invention]

The purpose of this invention is to solve the above-mentioned problems by making it possible to easily form a uniform steep slope, and to form a strong and safe embankment with less labor and effort. An object of the present invention is to provide an embankment forming method and forming material.

[Means to solve the problem]

This invention relates to the following embankment-forming method and forming material.

(1) Lay a flexible plastic net on the ground, install a formwork with integrated lattice members between the L-shaped frames on the slope forming part on the plastic net, and After filling the netted material and the inside of the formwork and applying tension, the end portion of the plastic netting is rolled back to wrap around the formwork, and the next stage of plastic meshing is laid on top of the tensioned embankment. A method for forming an embankment, comprising: joining the rolled-back end portion of the lower tier, and repeating the above operation one after another.

3 (2) A flexible plastic net that is laid on the ground, a type that integrates a lattice member between L-shaped frames and is installed on the slope forming part on the plastic net The upper plastic mesh is laminated with the end portion of the plastic mesh, which is filled with earth on the frame, the plastic mesh, and inside the form, and is rolled back to wrap around the form under pressure. An embankment forming material characterized by being composed of joining members that join together.

The plastic net-like material used is one that has enough flexibility to be rolled back at the slope forming part, and has enough rigidity and strength to hold the embankment and formwork. As such a plastic mesh material,
It is preferable to use a polyolefin such as polyethylene mixed with a filler such as carbon black, and it is particularly preferable to use l-axis or biaxial stretching to impart rigidity. There is no particular restriction on the size of the mesh, but it is preferable that it is large enough to allow the earth and sand in the upper and lower layers to come into contact with each other and to be able to hold the earth and sand on the slope. Generally length: 4-20cm, preferably 2-16cs, width: 1-1Oc
xn, preferably about 2 to 7(1).

The formwork is a fill-in formwork that has enough strength and rigidity to hold the earth and sand in the slope forming part and form the slope. Such a formwork has L-shaped frames arranged on both sides with an inclination angle comparable to that of the slope.
It is preferable that both ends of each are joined by a frame material, and a lattice-like member is integrated by welding or the like between the L-shaped frames on both sides.
A plurality of such molds can be arranged in a row and the respective L-shaped frames can be joined with bolts or the like.

The size of the mesh of the lattice member may be the same as the mesh of the plastic mesh, or may be larger or smaller, and can be arbitrarily determined depending on which will mainly hold the earth and sand on the slope, but in general It is preferably larger than the plastic mesh, for example 2-15 an, preferably 3-j
O(7) can be used.

Such a formwork is preferably made of metal such as steel, but may also be made of hard plastic.

The joining member may have a structure that joins the rolled end portion of the lower plastic net-like material and the upper plastic net-like material, and may be formed integrally with these plastic net-like materials, or may be a separate member.

It is preferable to arrange a plastic net with a finer mesh, for example, 0.5 to 50, preferably 1 to 3, along the formwork.

[For production]

In the present invention, first, a plastic mesh material is laid on the ground, a formwork is installed on the slope forming part on the plastic mesh material, earth and sand is filled on top of the plastic mesh material and inside the formwork, and the material is compressed. After that, the end portion of the plastic mesh is rolled back so as to wrap around the formwork. Next, the next stage of plastic net-like material is laid on top of the loaded embankment, and is joined to the rolled-up end of the lower stage using a joining member, and this operation is repeated to form the embankment.

Formwork may be stacked in multiple stages for one piece of plastic net-like material, and these may be wrapped all at once in one sheet of plastic net-like material. It is also preferable to place another fine mesh material along the formwork to prevent soil from flowing out.

In the embankment formed in this way, the rising surface forms a slope while the bottom of the formwork is fixed by the embankment. Therefore, the slope becomes a uniform surface with few irregularities. This formwork is lightweight, easy to handle, and easy to install, and because the embankment is exposed through the lattice-like members, it is also possible to green the slope.

Most of the plastic mesh is buried in the embankment and fixed, then rolled back around the formwork and joined to the next plastic mesh, supporting the formwork from the outside of the slope. It can be reinforced and forms safe steep slopes, and prevents formwork from shifting due to compression of embankment, etc.

〔Example〕

The present invention will be explained below with reference to embodiments of the drawings.

Figure 1 is a cross-sectional view of the multi-layered embankment, Figure 2 is a front view of the plastic mesh, Figure 3 is a perspective view of the formwork, Figure 4
The figure is an A-A sectional view, Figure 5 is a perspective view of the connection part, and Figure 6 is a perspective view of the connection part.
The figure is its front view.

-7- The embankment forming material in this embodiment is a plastic mesh material which is flexible and is laid on the ground, and a lattice member 6 is integrated between the L-shaped frames 5, and the plastic mesh material is The formwork 7 installed on the slope forming part 1a on l, the formwork 7
A narrow plastic net 8 is placed along the plastic net 8, and the plastic is placed on the embankment forming portion 1b of the plastic mesh 1 and inside the formwork 7, and is rolled back to wrap around the formwork 7 under tension. It consists of a joining member 4 that joins the end portion 1c of the net-like material and the laminated upper plastic net-like material l.

As shown in FIG. 2, the plastic net-like material 1 is formed by biaxially stretching a plastic net-like molded product, but it may also be made by punching holes in a plastic sheet and stretching it.

As shown in FIGS. 3 and 4, the formwork 7 is made of an L-shaped cross section, with an L shape having an inclination angle that corresponds to the inclination angle of the slope.
With the L-shaped frames 5 joined in a letter shape arranged on both sides, the frame members 5a are made of straight angle members at both ends of each frame member 5a.
The periphery of the lattice-like member 6 is welded between the L-shaped frame 5 and the frame material 5a on both sides to be integrated. The lattice-like member 6 has a structure in which a linear vertical member 6a and an L-shaped horizontal member 6b made of steel are welded at their intersection points. This formwork 7 is used by connecting a plurality of formworks in a row using bolt holes 5b provided in the L-shaped frame 5 with bolts and nuts. This formwork 7
, a reinforcing member 7c connects the rising surface 7a and the bottom surface 7b.
can be provided.

As shown in FIGS. 5 and 6, the joining member 4 is made of a beam-shaped body, and connects the rolled-up end portion 1c of the lower plastic net-like material 1 to the upper plastic net-like material 1.
By inserting the bonding member 4 into the mesh and rolling back the bonding member 4,
The upper and lower plastic mesh members 1 are to be joined together.

To form an embankment using the above-mentioned embankment forming material, first, a plastic net-like material l is laid on the ground, a plurality of formworks 7 are joined in a row, and a slope is formed on the plastic net-like material l. At the same time, a plastic net 8 is placed along the formwork 7, and earth and sand 3 is filled on the embankment forming part 1b of the plastic net-like soil and on the inner bottom surface 7b of the formwork 7, and is then compressed. , terminal part 1 of plastic mesh 1
Roll c back up so as to wrap around the formwork 7. Next, the next stage of plastic net material is laid on the loaded embankment, overlapped with the rolled-up lower end portion 1c, and joined with the joining member 4. The plastic net-like material 1 is tensed and the above-mentioned operations are sequentially repeated to perform MM, thereby forming an embankment. Then, a sandbag 2 is installed on the slope forming position of the uppermost plastic net-like material 1 and adjusted to the desired height to complete the embankment.

In the embankment formed in this way, the vertical slope 7a forms a slope while the bottom surface 7b of the formwork 7 is buried and fixed in the embankment. Therefore, the slope becomes a flat surface with few irregularities. This formwork 7 is lightweight, easy to handle, and easy to install, and since the embankment is exposed through the lattice member 6, it is possible to green the slope.

The plastic meshwork is rolled back so as to wrap around the formwork 7 with the embankment forming part 1b buried in the embankment and fixed, and is joined to the next stage of plastic meshwork, so the formwork 7 is It can be supported and reinforced from the outside of the slope, forming a safe and steep slope, and preventing the formwork 7 from shifting due to compression of embankment, etc.

The plastic net 8 prevents earth and sand from flowing out from the coarse plastic mesh 1 and the grid member 6 of the formwork 7.

〔Effect of the invention〕

According to the embankment forming method and forming material of the present invention, a formwork in which an L-shaped frame and a lattice-like member are integrated is installed on a slope forming part on a plastic net-like material to form an embankment, and the plastic net-like material is rolled back. Since the mold is wrapped around the formwork and the end part is joined and fixed with the next plastic mesh material, it is possible to easily form a uniform steep slope with no irregularities, and with less labor and effort, it is strong and safe. Embankments can be formed.

[Brief explanation of drawings]

The upper figure is a cross-sectional view of the embankment of the example, Figure 2 is a front view of the plastic mesh, Figure 3 is a perspective view of the formwork, 11 Figure 4 is a sectional view taken along line A-A, and Figure 5 is the joint. perspective view of the section;
FIG. 6 is a front view thereof, and FIG. 7 is a partially cutaway perspective view of a conventional embankment. In each figure, the same reference numerals indicate the same or equivalent parts, ↓ is a plastic mesh, 2 is a sandbag, 3 is earth and sand, 4 is a joining member, 5 is an L-shaped frame, 6 is a lattice member, and 7 is a formwork. , 8 is a plastic net.

Claims (2)

[Claims] (1) Lay a flexible plastic net on the ground, install a formwork with integrated lattice members between the L-shaped frames on the slope forming part on the plastic net, and After filling the netted material and the inside of the formwork and applying tension, the end portion of the plastic netting is rolled back to wrap around the formwork, and the next stage of plastic meshing is laid on top of the tensioned embankment. A method for forming an embankment, comprising: joining the rolled-back end portion of the lower tier, and repeating the above operation one after another. (2) A flexible plastic net-like material that is laid on the ground, a formwork that integrates a lattice-like member between L-shaped frames and is installed on the slope forming part on the plastic net-like material. , and the end portion of the plastic net that is filled with earth on top of the plastic net and inside the formwork, and is rolled back to wrap around the form under pressure, and the upper laminated plastic net is joined. An embankment forming material characterized in that it consists of joining members.