JP3220309U - Pressure resistant sandbag - Google Patents

Abstract

An object of the present invention is to provide a pressure-resistant soil bag that prevents the opening of the sandbag bag from opening with a simple structure and has a high effect of preventing leakage of filling material.
SOLUTION: A bottomed cylindrical bag body 20 and a tying strap 30 attached near the opening of the bag body 20, the bag body 20 is provided with an accommodating portion 21 for accommodating a filling material, and a folding member. And the wrapping surplus length portion 22 has a length that can be wound in multiples to form a thick winding portion, and the tie strap 30 is thickly wound at a position directly below the thick winding portion. It has a total length that can be wound around a neck portion that has a smaller diameter than the portion.
[Selection] Figure 1

Description

  The present invention relates to a pressure-resistant soil bag having a high pressure-proofing effect that prevents leakage of filling material, and more particularly to a pressure-resistant soil bag suitable for a point-end reinforcement work in which a plurality of sandbags are stacked and used.

As one of the seismic reinforcement works for existing embankments that support roads and railroad roadbeds, foreground reinforcement works that limit the scope of reinforcement to the forefront have been proposed.
This method uses a pillow-shaped sandbag filled with a filling material such as sand and sand in a sandbag, and stacks several sandbags horizontally while stacking them in a space area that has been cut out from the heel of the reinforcement area. A large earth structure is built by preloading or prestressing in the direction and integrating.
In this way, the tip reinforcement works are intended to suppress the slip failure of the existing embankment during an earthquake by constructing a gravitational earth structure and reinforcing the tip of the existing embankment.

A typical sandbag has a bag body formed by stitching two sides of a sheet piece, and a tie strap attached to an opening end of the bag body.
As a method of closing the mouth of the bag main body, a method of narrowing the mouth of the bag main body by pulling a loop-shaped tying string inserted over the entire circumference of the opening end of the bag main body (Patent Document 1), A form (Patent Document 2) is known in which a tying string attached to the outside is wound around a bag body and the mouth is closed.

Japanese Patent Laid-Open No. 9-324428 Japanese Patent Laying-Open No. 2015-214876

Conventional sandbags have the following problems.
<1> Since conventional sandbags are assumed to be used in a vertical orientation, no measures are taken to prevent leakage of the filling material through the mouth of the bag body.
For this reason, when a plurality of sandbags are stacked side by side and used in an environment where a large load is applied in the vertical direction, such as in a point reinforcement, the filling material tends to leak from the mouth of the sandbag. .
<2> When an earthquake occurs in an environment in which a large load is applied in the vertical direction, the earthenware is overstruck and the earth pressure (internal pressure) in the earthenware is further increased.
As a result, the tying string slides down from the mouth of the sandbag and the mouth of the sandbag opens.
<3> As described above, when a conventional sandbag is used in a horizontal position for a point-end reinforcement work, there is a problem that the filling material leaks out, and a proposal for an improvement technique is demanded.

The present invention has been made in view of the above points, and an object thereof is to provide the following pressure-resistant soil bag.
<1> To prevent the opening of the sandbag bag from opening with a simple structure and enhance the leakage prevention effect of the filling material.
<2> The ability to tie up sandbags easily.
<3> It can be used for point reinforcement for existing embankments.

A pressure-resistant soil bag for a sandbag according to the present invention has a bottomed cylindrical bag body and a tying string attached near the opening of the bag body.
The bag body includes a storage portion for storing the filling material, and a fold surplus portion formed in the extending direction of the storage portion and having an opening at the end. The winding excess length portion has a length that can be wound in multiple layers to form a thick winding portion.
The tying rope attached to a part of the wrapping surplus length part has a total length that can be tied around the neck part formed in a smaller diameter than the thick winding part at a position directly below the thick winding part.
In another embodiment of the present invention, the tying strap is attached over a half circumference of the opening, and both ends of the tying cord extend outward from both sides of the fold excess length portion constituting the bag body.
In another embodiment of the present invention, the bag body may be vertically long.
In another embodiment of the present invention, the bag body is constituted by a fabric sheet, and the joining end portion of the fabric sheet is joined in a bag shape by sewing or adhesion.
In the case of sewing, it is desirable that the joining end portions of the fabric sheets are joined together by sewing.

The present invention has at least one of the following effects.
<1> Forming a surplus length portion in the extending direction of the housing portion of the bag body to form a thick winding portion having a large diameter by wrapping the surplus length portions in a multiple manner when producing a sandbag, A tying rope can be tied to the neck part formed between the thick winding part and the accommodating part of the bag body filled with the filling material so as not to slide.
Therefore, the opening of the sandbag can be prevented from opening with a simple structure, and the effect of preventing leakage of the filling material can be enhanced.
<2> When making a sandbag, it is possible to attach a tying rope simply by forming a large-diameter thick winding part by wrapping the extra length part of the fold, so the tying work of the sandbag is easy. Can do.
<3> Since the effect of preventing leakage of the filling material is high, it is most suitable as a pressure-resistant soil bag for a point reinforcement for an existing embankment in which a plurality of sandbags are placed horizontally and stacked.

Overall perspective view of pressure-resistant soil bag according to the present invention Perspective view of a sandbag made by filling a filling material into a pressure-resistant sandbag with a part broken. It is explanatory drawing of the manufacturing method of a sandbag, (A) is explanatory drawing of the process of filling a filling material in a pressure-resistant clay bag, (B) is explanatory drawing of the process of winding the fold excess part of a pressure-resistant sandbag, (C) is an explanatory diagram of the process of tying a pressure-resistant soil bag with a tying string

  Hereinafter, the present invention will be described in detail with reference to the drawings.

<1> Configuration of pressure-resistant soil bag (Figs. 1 and 2)
A pressure-resistant soil bag 10 according to the present invention includes a bottomed cylindrical bag body 20 made of a sheet material having flexibility and pressure resistance, and a tie strap 30 attached near the opening 23 of the bag body 20. .
The bag body 20 includes a storage portion 21 that can store the filling material 40, and a folding excess length portion 22 that is formed by extending the storage portion 21.
The accommodating part 21 and the winding surplus length part 22 which comprise the bag body 20 are formed in the same width | variety with the same raw material, The inner space is formed as continuous space.

<1.1> Storage Unit The storage unit 21 is a part for filling the filling material 40 and points to a substantially lower half of the bag body 20. The lateral width and height of the accommodating portion 21 are appropriately selected according to the filling amount of the filling material 40.

<1.2> Folding surplus length part The folding surplus length part 22 points out the substantially upper half site | part of the bag body 20 which is not filled with the filling material 40. FIG.
The winding excess length part 22 has a length that allows multiple folding.
The pressure-resistant clay bag 10 according to the present invention is formed by forming a wrapping length portion 22 above the housing portion 21 in order to reliably prevent the opening 23 from opening.

<2> Bag Body The bag body 20 is made of a water-impermeable or water-permeable fabric sheet excellent in pressure resistance.
In this example, the fabric sheet having a square shape is folded in two, and the both sides that have been polymerized are joined to form a vertically long cylinder, and the bottom end opening of the cylinder is closed with a circular bottom cloth sheet. The bag body 20 can be formed.

As the means for joining the fabric sheets, stitching means and adhesion means can be applied.
When the stitching means is employed, the joint end of the fabric sheet is folded back, and the two joint ends folded back are sewn with a high-strength thread.

When a woven fabric is applied to the fabric sheet of the bag body 20, synthetic fibers, regenerated fibers, semi-synthetic fibers, or natural fibers can be applied.
As synthetic fibers, for example, polyester fibers, polyvinyl chloride fibers, polyvinylidene chloride fibers, modacrylic fibers, acrylic fibers, polyamide fibers, polyethylene fibers, polystyrene fibers, and the like can be used. Fiber is preferred.
Examples of natural fibers that can be used include hemp fibers, cotton fibers, and cellulose fibers.

The bag body 20 may be formed of a resin sheet in addition to the woven fabric.
Although there is no restriction | limiting in particular in the material of the bag body 20, What is necessary is just the fabric sheet which has the intensity | strength which can endure the maximum internal pressure of the assumed filling material 40. FIG.

<3> Tying string 30 A tying string 30 for closing the opening 23 is attached to a part of the fold surplus portion 22.
In this example, the tying-string 30 is attached over the half circumference of the opening 23, and both ends of the tying-string 30 extend outward from both sides of the folding excess length portion 22.
The entire length of the tying-up string 30 is only required to have a length that can be wound around the neck portion 25 of the bag body 20 and can be tied up.

[How to make sandbags]
A method for manufacturing the sandbag 50 will be described with reference to FIG.

<1> Filling with filling material (FIG. 3A)
The filling material 40 is put into the pressure-resistant soil bag 10 through the opening 23, and the filling material 40 is filled up to the height of the accommodating portion 21.
As the filling material 40, a known granular material such as earth and sand, aggregate, and recycled aggregate can be used.

<2> Formation of thick winding part (FIG. 3B)
While the fabric sheets are overlapped so that the opening 23 of the pressure-resistant soil bag 10 is closed, the winding excess length portion 22 is wound to the vicinity of the boundary of the housing portion 21.
As a winding method of the winding excess length portion 22, for example, it is wound several times with a width of about 5 to 10 cm along a horizontal folding curve, or wound in a roll shape.
The thick winding part 24 is formed by winding the winding excess length part 22 in multiple directions along the horizontal transverse direction of the pressure-resistant soil bag 10.
When winding the wrapping excess length portion 22, the tying strap 30 is extended outward from the left and right ends of the thick winding portion 24.

<3> Bending the thick roll (Fig. 3 (C))
Hold the left and right sides of the thick winding portion 24 by hand and bend each other in the approaching direction to make the thick winding portion 24 into a dumpling shape. Since the bag body 20 is made of a flexible fabric sheet, a large bending force is not required for folding the thick winding portion 24 into a dumpling shape.
By bending the thick winding portion 24 into a dumpling shape, the base fabric sheet of the thick winding portion 24 is drawn in the reduced diameter direction to form the neck portion 25.
The diameter of the neck portion 25 is smaller than that of the dumpling-shaped thick winding portion 24, and a large step is generated between the dumpling-shaped thick winding portion 24 and the neck portion 25.

<4> Tying with a tying string (FIGS. 3B and 3C)
After the tying string 30 extending from both ends of the thick winding part 24 is wound around the neck part 25 a plurality of times, the tying string 30 is tied so that both ends of the tying string 30 cannot be unwound, and the production of the sandbag 50 is completed.

<5> Pressure resistance of sandbags Since conventional sandbags have a flat structure from the mouth of a sandbag bag closed in the direction of diameter reduction, the straps tied to the mouth of the sandbag were easily slipped off.
In contrast, the present invention has a structure in which a tying string 30 is tied to a small-diameter neck portion 25 formed between a housing portion 21 swelled to a large diameter and a dumpling-shaped thick winding portion 24.
Therefore, even if the tying-up string 30 tries to slide at the neck part 25, the dumpling-shaped thick winding part 24 reliably regulates the sliding of the tying-up string 30.
Therefore, even when a plurality of sandbags 50 are stacked side by side and used in an environment where a large load is applied in the vertical direction, leakage of the filling material 40 through the opening 23 of the pressure-resistant soilbag 10 is ensured. Can be prevented.
Even if an earthquake occurs in an environment in which a large load is applied in the vertical direction, the tying string 30 does not come off, so that leakage of the filling material 40 can be restricted.
Further, even if the sandbag 50 falls from a high place, the pressure-resistant sandbag 10 does not open unless the strap 30 is unfastened and removed.

DESCRIPTION OF SYMBOLS 10 ... Pressure-resistant soil bag 20 ... Bag body 21 ... Bag body accommodation part 22 ... Unfolding length part of bag body 23 ... Opening 24 …… Thick roll 25 …… Neck 30 ...... Tie-up string 40 …… Filling material 50 …… Dougou

A pressure-resistant soil bag for a sandbag according to the present invention has a bottomed cylindrical bag body and a tying string attached near the opening of the bag body.
The bag body includes a storage portion for storing the filling material, and a fold surplus portion formed in the extending direction of the storage portion and having an opening at the end. The winding excess length portion has a length that can be wound in multiple layers to form a thick winding portion.
The tying strap attached to a part of the wrapping surplus length part has a total length that can be tied around the neck part formed in a smaller diameter than the thick winding part at a position directly below the thick winding part.
In another embodiment of the present invention, the tying strap is attached over a half circumference of the opening, and both ends of the tying cord extend outward from both sides of the fold excess length portion constituting the bag body.
In another embodiment of the present invention, the bag body may be vertically long.
In another embodiment of the present invention, the bag body is constituted by a fabric sheet, and the joining end portion of the fabric sheet is joined in a bag shape by sewing or adhesion.
In the case of sewing, it is desirable that the joining end portions of the fabric sheets are joined together by sewing.

The present invention has at least one of the following effects.
<1> Forming a surplus length portion in the extending direction of the housing portion of the bag body to form a thick winding portion having a large diameter by wrapping the surplus length portions in a multiple manner when producing a sandbag, A tying string can be tied non-slidably to the neck formed between the thick winding part and the accommodating part of the bag body filled with the filling material.
Therefore, the opening of the sandbag can be prevented from opening with a simple structure, and the effect of preventing leakage of the filling material can be enhanced.
<2> When making a sandbag, it is possible to attach a tying string simply by wrapping the extra length of the fold and forming a large-diameter thick winding part. Can do.
<3> Since the effect of preventing leakage of the filling material is high, it is most suitable as a pressure-resistant soil bag for a point reinforcement for an existing embankment in which a plurality of sandbags are placed horizontally and stacked.

Claims (5)

A pressure-resistant soil bag for enclosing a filling material inside to form a sandbag,
A bottomed cylindrical bag,
Having a tying strap attached near the opening of the bag,
The bag body includes a storage portion that stores the filling material;
A winding surplus length portion formed in an extending direction of the housing portion and having an opening formed at an end portion;
A tying rope is attached to a part of the fold surplus part,
The winding surplus length has a length that can be wound multiple times to form a thick winding,
The tying strap has a total length that can be tied around the neck formed in a smaller diameter than the thick winding portion at a position directly below the thick winding portion,
Pressure-resistant soil bag.   The said tying-up string is attached over the half periphery of opening, and the both ends of the tying-down string have extended outward from the both sides of the fold excess length part which comprises a bag body, It is characterized by the above-mentioned. Pressure resistant sandbag.   The pressure-resistant soil bag according to claim 1 or 2, wherein the bag body is elongated.   The pressure-resistant soil container according to any one of claims 1 to 3, wherein the bag body is formed of a fabric sheet, and a joining end portion of the fabric sheet is joined in a bag shape by sewing or adhesion. bag.   The pressure-resistant soil bag according to claim 4, wherein the joint end portions of the fabric sheet are joined by sewing.

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