JP3702871B2 - Sandbag, sandbag installation method and banking method using the sandbag - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a large sandbag that can be applied to embankments and the like, and has high strength as a whole and can be used regardless of the state of the soil to be put inside. . In addition, what is referred to as soil in the present application includes dredged sand, sludge, construction residual soil, and the like. Furthermore, the present invention relates to a sandbag installation method and a banking method using the sandbag according to the present invention.
[0002]
[Prior art]
Conventionally, there are large-sized bag-like sandbags, but these are mainly used for transporting materials and feed rather than using as sandbags.
[0003]
[Problems to be solved by the invention]
Therefore, the conventional one has problems in strength and long-term durability. Although it is in time for emergency use at the time of disaster recovery etc., there are problems in using it as a permanent structure, and there are also inconveniences in usability.
[0004]
That is, since the structure is not intended for long-term durability, its strength is not sufficient for use as a sandbag for use in banking or the like. Further, in the case of using a high water content soil or the like, the material and structure of the bag is not taken into consideration with respect to water permeability, so the moisture in the bag is not quickly discharged to the outside and is not stable.
[0005]
On the other hand, when conventional large sandbags are used for high embankments, there is a fear of falling or collapsing because there is no bonding force between the sandbags installed, so it is difficult to pile up the sandbags, In order to prevent collapse, sandbags need to be stacked in the vertical direction instead of being stacked vertically, and as a result, a vertical slope cannot be formed.
[0006]
[Means for Solving the Problems]
In other words, in order to apply large sandbags to embankments, the bags as a whole have sufficient strength, consider the material of the bags so that the water in the soil can be quickly drained, and do not fall or collapse after installation. To prevent this, it is necessary to be able to easily connect adjacent sandbags. Furthermore, in order to be able to lay the sandbags without gaps, it is necessary to have a structure that keeps the cylindrical shape as much as possible without causing the bag to swell due to the soil put in.
[0007]
In addition, in order to be stable even when several sandbags are stacked, not only the adjacent sandbags are joined, but also a support made of H steel or the like that penetrates the stacked sandbags up and down is easily hit. It is necessary to have a structure that can be filled.
[0008]
Therefore, in order to solve the above-mentioned problem, the sandbag according to the present invention is made of a material having a desired area water permeability at the bottom center part and the lower side of the bottomed cylindrical bag body, and the other part is non-permeable. It is made of a material, and a desired number of annular reinforcing bands are sewn on the outer periphery of the side of the bag body. The central part of the two hanging bands bent in a U-shape is the hanging part, and both side parts are annularly reinforced at equal intervals. The suspension band is sewn to the annular reinforcement band at the intersection of the annular reinforcement band, and the bottom reinforcement band is formed at the boundary between the water permeable material part at the center of the bottom and the surrounding non-permeable material part. And each end of the suspension band is sewn to the bottom reinforcing band.
[0009]
Alternatively, in addition to this, the upper surface of the bag body is closed with a water-permeable material or a non-water-permeable material, and a radial cut is formed in the central portion to form an input port, and the content inside the input port portion is for preventing scattering of contents. One side of the cloth is sewn, and the length of the hanging part is 1.2 to 3.0 times the diameter of the sandbag.
[0010]
In addition, the sandbag installation method according to the present invention is that the soil is placed in the sandbag bag of the present invention, and the sandbag is spread or laid at a predetermined location, and then the hanging portion of each sandbag bag is cut at an arbitrary location and the cut suspension The sandbag is integrated by tying the part to the hanging band part of the adjacent sandbag, and the sandbag is stacked so that the upper and lower sandbags of the desired number of stages are located on the same axis by the above method. For the sandbag at the location, a support is driven so as to penetrate the water permeable material part at the bottom of the bottom sandbag from the upper surface opening of the top sandbag.
[0011]
On the other hand, in the embankment method according to the present invention, the sandbags are installed by the above-mentioned method, a simple wall is constructed with an interval from the outermost sandbags, and backfill soil is put between the sandbags and the simple walls and stacked. The soil is filled up to the desired height inside the sandbag.
[0012]
[Action]
Even if high-moisture soil is introduced into the sandbag by using a non-permeable material in the center and bottom side of the bottom of the sandbag, moisture is formed with this water-permeable material due to the weight of the soil. It is easily discharged from the part.
[0013]
In addition, since the annular reinforcing band is sewn on the cylindrical part of the bag and the bottom reinforcing band is sewn on the bottom part, the bag as a whole has extremely high strength, and the hanging band has these annular reinforcing band and bottom reinforcing band. Since it is connected, it is possible to prevent the bag from being damaged by the weight of the soil inside when the sandbag is lifted.
[0014]
Further, after the installation, by cutting the suspension part in the middle, it is possible to connect to the hanging band of the adjacent sandbag by using the cut suspension part, and the fall and collapse after the sandbag installation can be prevented. Further, a pillar such as H steel can be easily driven vertically by using the center of the bottom formed of the inlet and the water-permeable material, and the stability of the sandbag at the time of embankment can be further enhanced. On the other hand, most of the earth pressure of the embankment can be received by the sandbag, and a simple wall for makeup can be constructed on the outside of the sandbag by a concrete building block or a sheet pile for construction.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of a sandbag according to the present invention will be described with reference to FIGS.
Reference numeral 1 denotes a bottomed cylindrical bag body, and the bottom center part 2 and the side lower part 3 are made of a material having a desired area water permeability. And the other part 4 of the bag body 1 is formed with the non-permeable material. For example, a net-like material can be used as the non-permeable material, but the other bag body 1 is made of polypropylene, and the bottom center portion 2 and the side lower portion 3 are not waterproofed. You may make it water-impermeable by waterproofing. Moreover, the location formed with a water-impermeable material is not limited to the area and location shown in the figure, and it is sufficient that moisture can be quickly discharged from the lower side of the bag body 1.
[0016]
A desired number of annular reinforcing bands 5 are sewn on the outer periphery of the bag body at desired intervals. In the example shown in the figure, an example is shown in which the bottom of the side and the upper end are slightly spaced and sewn at regular intervals, but these may be selected as appropriate depending on the size of the bag and the like. Further, instead of sewing, it may be bonded by an adhesive or may be fixed by a method such as heat welding depending on the material of the annular reinforcing band 5 and the bag body 1. The material of the annular reinforcing band 5 may be made of synthetic fiber or natural fiber as long as it has a certain tensile strength. In addition, for example, in the illustrated example (the bag body 1 is made of polypropylene and both the diameter and the height are 110 cm), the width of the annular reinforcing band 5 is 10 cm, and the bottom of the side surface of the bag body 1 is The top ends are separated by 10 cm and are equally spaced.
[0017]
Reference numeral 6 denotes two suspension bands bent in a U-shape, and the central part thereof is a suspension part 7. The both side portions are made to be orthogonal to the annular reinforcing band 5 at equal intervals (at intervals of ¼ circumference of the circumference in the bottom view of FIG. 3), and the suspension band 6 is a crossing portion 8 orthogonal to the annular reinforcing band 5. It is sewn to the annular reinforcing band 5. That is, the suspending band 6 is separated from the bag body 1 except for the crossing part 8 that crosses the annular reinforcing band 5, and can be combined with the adjacent sandbag using this separating part 9 as described later.
[0018]
Further, a bottom reinforcing band 11 is sewn to the boundary between the water permeable material portion at the bottom center portion 2 and the non-water permeable material portion 10 around it. Each end 12 of the suspension band 6 is sewn to the bottom reinforcing band 11. In addition, the length of the suspension part 7 of the suspension band 6 is 1.2 to 3.0 times the diameter of the bag body 1. As will be described later, the hanging portion 7 is cut and convenient after being installed and used as a connecting rope. However, if it is too long, the sandbag must be lifted unnecessarily at the time of sandbag installation work. Since the work efficiency is deteriorated, it is appropriate to set the length to the above as a compromise.
[0019]
The upper surface 13 of the bag body 1 is closed with a water-permeable material or a non-water-permeable material as necessary, and a slit 14 is formed radially at the center portion to serve as an inlet 15. Two cloths 16 sized to block the charging port 15 so as to sandwich the charging port 15 to prevent scattering of contents are placed inside the charging port 15 part, and each side of the upper surface 13 is an end of the charging port 15. It is sewn on. Then, the string 17 is passed through the tip of the radial cut 14 on the upper surface 13, and the opening that is the input port 15 in a purse-like shape can be narrowed. That is, the insertion port 15 is closed by three pieces of material, that is, two cloths 16 for preventing the contents from scattering and the upper surface 13 of the bag body 1 that can be narrowed in a purse-like manner.
[0020]
Next, a sandbag installation method using the sandbag bag of the present invention will be described with reference to FIGS.
The above-mentioned sandbag bag inlet 15 is opened and a suitable soil is put therein. Since the drainage in the sandbag is also taken into consideration, it can be used even when the moisture content is high. Then, after the earth and sand are put in the sandbag bag, the string 17 is squeezed to narrow the insertion port 15. The operation up to this point may be performed at the sandbag installation location, or may be performed at other locations.
[0021]
In addition to the various types of earth and sand as mentioned above, the soil to be put in the sandbag bag may be a case where the sandbag bag is damaged due to weather such as rainfall or sunshine or other external factors, or construction of a permanent structure. Considering it, it is desirable to use stable soil. However, fast-stiffened soil that hardens before the sandbag is installed, such as cement-stabilized soil, is inappropriate from the standpoint of stability and can be squeezed to some extent, and the progress of material age In addition, a treated soil whose strength increases with pressure is desirable. For example, what is known as so-called Fe lime-based treated soil is suitable. This is a soil stabilizer for natural soil, natural soil and crushed stone, Al-Fe-Ti-based oxide composition mainly composed of iron oxide and lime, aluminum oxide, iron oxide and titanium oxide or aluminum oxide, iron oxide and It is a mixture of titanium oxide and lime, Fe-based oxidation mixture mainly composed of iron oxide, sewage sludge incinerated ash and lime mainly composed of CaO, SiO2, Al2O3.
[0022]
Then, after sandbags are laid flat at predetermined locations, the hanging portions 7 of the sandbag bags are cut at arbitrary locations to form a connecting rope 18. Then, the cut suspending portion 7, that is, the connecting rope 18, is tied to the separating portion 9 of the adjacent sandbag suspending band 6. The portion for cutting the suspension part 7 may be selected according to the length of the suspension part 7, but both sides of the cut part (a total of four coupling ropes are formed) as coupling ropes 18. When it is desired to use it, it is cut at the center, and when only one side (a total of two connecting ropes can be formed) is required, it may be cut near the upper surface 13 of one of the bags 1. The adjacent sandbag joining operation may be performed after all the sandbags are laid, but in some cases, the sandbags may be sequentially performed in parallel while performing the laying work. This may be arbitrarily selected according to the working environment and conditions at that time.
[0023]
In this way, as shown in FIG. 6, the sandbags are stacked so that the desired number of upper and lower sandbags are located on the same axis. Of course, it is possible to stack in a stepped manner as in the prior art, but it is a feature of the sandbag bag of the present invention that the sandbags can be stacked vertically on the same axis in order to reduce the laying area and the required number of sandbags. Next, as shown in FIG. 7, the column 19 is driven so as to penetrate the water permeable material part on the bottom surface of the lowermost sandbag bag from the upper surface opening part of the uppermost sandbag bag with respect to the sandbag bag at any place among the stacked sandbags. For example, H steel is used as the support. An appropriate number and location of the support columns 19 may be selected according to the number of stacked sandbags and various conditions of the location where the sandbag is laid.
[0024]
Next, the embankment method using the sandbag of the present invention will be described with reference to FIGS. The sandbags are piled up by the above method as shown in FIG. Then, as shown in FIG. 7, the sheet pile 21 is driven as a simple wall with a space from the outermost sandbag 20, and the backfill soil 22 is inserted between the sandbag 20 and the sheet pile 21. In addition, the soil 23 is filled up to the desired height inside the piled sandbags. The earth pressure of the working soil 23 can be received by the sandbag, and the sheet pile 21 to be constructed on the outside of the soil 23 only needs to be able to receive the earth pressure of the backfill soil 22, so the sheet pile 21 is not so serious. Also good.
[0025]
In the illustrated example, the sheet pile 21 is driven as a simple wall. However, the simple wall also has a cosmetic meaning outside the piled sandbag, and as described above, the earth pressure of the backfill soil 22 is used as the earth pressure. Therefore, in addition to what is built by driving into the ground like a sheet pile, it may be constructed by stacking things such as concrete building blocks for construction. In addition, as shown in FIG. 6, the support | pillar 19 can also be embanked without using it.
[0026]
【The invention's effect】
As described above, according to the sandbag according to the present invention, the bottom center portion and the lower side of the bottomed cylindrical bag body are made of a material having a desired area water permeability, and the other portions are non-permeable materials. A ring reinforcement band is formed on the outer periphery of the bag body at a desired interval and sewn in a desired number. The central part of the two suspension bands bent in a U-shape is used as a hanging part, and both side parts are formed at equal intervals. The suspension band is sewn to the annular reinforcement band at the intersection of the annular reinforcement band, and the bottom reinforcement band is attached to the boundary between the water-permeable material part at the center of the bottom and the surrounding non-permeable material part. Since each end of the suspending band is sewn and sewn on this bottom reinforcing band, the annular reinforcing band can suppress the bulging of the side surface against high moisture content and heavy weight, making it easy to lay the sandbag without any gaps Can be lifted and stacked with bottom reinforcement band Rupture of the bag can be prevented, it is possible to soil containing much moisture aggressively utilized by using a more permeable material on the bottom surface and the lower side. In addition, the suspension band can be used as a material for binding with an adjacent sandbag after the sandbag is installed.
[0027]
In addition to the above, the upper surface of the bag body is closed with a water-permeable material or a non-water-permeable material, and a radial cut is formed in the center portion to form an input port, and the content inside the input port portion is for preventing scattering of contents. Since one side of the cloth is sewn, the cut portion from the inlet serves as a hopper, making it easy to put in the soil, while sewing the cloth to prevent the contents from scattering inside the inlet. By doing this, it is possible to prevent the soil once inside from jumping out. Or since the length of the hanging part is 1.2 to 3.0 times the diameter of the sandbag, the length of the hanging part is not too long when the sandbag is lifted. In order to use as a string, a moderate length can be secured for tying to an adjacent sandbag.
[0028]
Further, according to the sandbag bag installation method according to the present invention, after putting the soil into the sandbag bag of the present invention and laying the sandbag in a predetermined place, each sandbag bag is cut at an arbitrary position of the hanging portion, and the cut hanging Since the sandbag was integrated by tying the part to the hanging band part of the adjacent sandbag bag, the adjacent sandbags can be securely connected, the sandbag can be prevented from falling, and structural stability can be ensured, Therefore, the sandbags can be stacked vertically without shifting in a staircase pattern.
[0029]
Furthermore, the sandbags of the present invention are stacked by the above-described method so that the upper and lower sandbags of the desired number of stages are located on the same axis, and the sandbags at arbitrary positions among the stacked sandbags from the upper surface opening of the uppermost sandbag. Since the struts were driven so as to penetrate the permeable material part of the bottom of the sandbag, the sandbags were stacked vertically without shifting in steps, so that the struts could be penetrated to skewer the sandbag center. The vertical stability can be further improved.
[0030]
On the other hand, according to the embankment method according to the present invention, a sandbag is installed by the above-mentioned method, a simple wall is constructed with a space from the outermost sandbag, and backfilling soil is inserted between the sandbag and the simple wall. In addition, since the soil was filled up to the desired height inside the piled sandbags, compared to the conventional method of piled up sandbags in steps, the sandbag installation area and The number of necessary sandbags can be reduced, and the simple wall hardly receives the earth pressure of the embankment, so that the outside of the sandbag can be constructed by a simple method.
[Brief description of the drawings]
FIG. 1 is a front view of a sandbag of the present invention.
FIG. 2 is a bottom view of the sandbag of the present invention.
FIG. 3 is a plan view of a sandbag of the present invention.
FIG. 4 is an explanatory front view showing the sandbag installation method of the present invention.
FIG. 5 is an explanatory plan view showing the sandbag installation method of the present invention.
FIG. 6 is an explanatory view showing an embodiment of the embankment method according to the present invention.
FIG. 7 is an explanatory view showing another embodiment of the embankment method of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bag body 2 Bottom center part 3 Side lower part 4 Other parts 5 Annular reinforcement band 6 Suspension band 7 Suspension part 8 Crossing part 9 Separation part 10 Non-permeable material part 11 Bottom reinforcement band 12 Tip 13 Upper surface 14 Break 15 Input Mouth 16 Cloth 17 Wrapped string 18 Joining rope 19 Strut 20 Sandbag 21 Sheet pile 22 Backfill soil 23 Soil

Claims (6)

The bottom central part and bottom side of the bottomed cylindrical bag are made of a material having a desired area water permeability, and the other part is made of a water-impermeable material. The center part of the two suspension bands that are sewn in the desired number and bent into a U-shape is the suspension part, so that both sides are perpendicular to the annular reinforcement band at equal intervals, and the suspension band intersects the annular reinforcement band At the same time, the bottom reinforcing band is sewn to the boundary between the water-permeable material part at the center of the bottom and the non-permeable material part around it, and each end of the suspension band is sewn to this bottom reinforcing band. A sandbag bag characterized by that. The upper surface of the bag body is closed with a water-permeable material or a non-water-permeable material, and a slit is radially formed in the central portion to form an inlet, and one side of the cloth for preventing content scattering is placed inside the inlet portion. The sandbag bag according to claim 1, which is sewn. The sandbag bag according to claim 1 or 2, wherein the length of the hanging part is 1.2 to 3.0 times the diameter of the sandbag bag. After putting the soil into the sandbag bag according to claim 1 and spreading the sandbag at a predetermined position, each sandbag bag is cut at an arbitrary portion of the hanging portion, and the cut hanging portion is suspended by the adjacent sandbag bag. A sandbag installation method characterized in that the sandbag is integrated by tying to the belt portion. 5. The method according to claim 4, wherein the sandbags according to claim 1 are stacked such that a desired number of upper and lower sandbags are coaxially positioned, and an upper surface opening of the uppermost sandbag with respect to the sandbags at arbitrary locations among the stacked sandbags A sandbag installation method, wherein a strut is driven so as to penetrate the water-permeable material portion on the bottom of the bottom sandbag. A sandbag is installed by the method according to claim 5, a simple wall is constructed with a space from the outermost sandbag, backfill soil is put between the sandbag and the simple wall, and a desired inside of the piled sandbag is desired. An embankment method characterized by embedding the soil until the height is reached.

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