JP2004084183A - Sandbag, sandbag installation method using the same, and banking method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a large-size sandbag applicable to banking, having a high strength as a whole, and being used irrelevant to soil types and their states to be put therein. <P>SOLUTION: This sandbag is formed such that the bottom central part and side lower parts of a bottomed and cylindrical bag body are formed of a material having permeability in their prescribed areas, the other parts are formed of a impermeable material, a prescribed number of annular reinforcing belts are sewn in the outer circumference in the side of the bag body at prescribed intervals, the central parts of two suspension belts curved into U shape are set to suspension parts, the both-side parts are orthogonally crossed with the annular reinforcing belts at same intervals respectively, the suspension belts are sewn to the annular reinforcing belts in the parts crossing with the annular reinforcing belts, a bottom reinforcing belt is sewn to a boundary between the permeable material part in the bottom central part and the impermeable material part in its circumference and the respective tips of the suspension belts are sewn to the bottom reinforcing belt. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a large sandbag applicable to embankment or the like, and has high strength as a whole and can be used regardless of the state of soil to be put into the inside. . In the present application, what is referred to as the soil includes dredged soil, sludge, construction residual soil, and the like and the soil. Further, the present invention relates to a method for installing a sandbag using the sandbag according to the present invention, and an embankment method.
[0002]
[Prior art]
Conventionally, there are also large-sized sandbags, but these are intended to be mainly used for transporting materials and transporting feed rather than being used 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 sufficient for emergency use at the time of disaster recovery, it is problematic to use it as a permanent structure, and its use is inconvenient.
[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 embankment or the like. In the case of using a medium with high water content, the material and structure of the bag are not taken into consideration with respect to water permeability, so that moisture in the bag is not quickly discharged to the outside and is not stable.
[0005]
On the other hand, when a conventional large sandbag is used for high embankment, there is no binding force between the installed sandbags, so there is a concern that the sandbags may fall over and collapse.Therefore, it is difficult to pile the sandbags high, To prevent collapse, sandbags must not be stacked vertically, but stacked alternately in the vertical direction. As a result, stacking that forms a vertical slope cannot be performed.
[0006]
[Means for Solving the Problems]
In other words, in order to apply a large sandbag to the embankment, the bag must have sufficient strength as a whole, and the material of the bag must be considered so that the moisture of the soil can be discharged quickly. It is necessary to be able to easily join adjacent sandbags to prevent them. Furthermore, in order to be able to lay the sandbags without gaps when laying the sandbags, it is necessary to have a structure that keeps the bag as much as possible without expanding the bags due to the soil material placed therein.
[0007]
In addition, in order to maintain stability even when several sandbags are stacked, not only are the sandbags connected to each other but also a strut made of H steel or the like that penetrates the stacked sandbags up and down easily is struck. It is necessary to have a structure that fits.
[0008]
Therefore, in order to solve the above problem, the sandbag according to the present invention is made of a material having a desired area of water permeability at the bottom center and the lower side of the bottomed cylindrical bag, and the other parts are non-water permeable. It is made of a material, and a desired number of annular reinforcing bands are sewn on the outer periphery of the side surface of the bag at a desired interval, and the central portion of the two hanging bands bent into a U-shape is used as a hanging portion, and both side portions are annularly reinforced at equal intervals. The suspension belt should be perpendicular to the belt, and the suspension band should be sewn to the annular reinforcement band at the intersection with the annular reinforcement band. And each end of the hanging band is sewn to this 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 water-impermeable material, and a radial cut is formed in a central portion as an input port, and inside the input port portion is used for preventing content scattering. And the length of the hanging portion is 1.2 to 3.0 times the diameter of the sandbag.
[0010]
Further, the sandbag installation method according to the present invention cuts the hanging portion of each sandbag bag at an arbitrary position while putting the soil in the sandbag bag of the present invention and laying the sandbag at a predetermined position or after laying the sandbag at the predetermined position. The sandbags are connected to the hanging part of the adjacent sandbag so that the sandbags are integrated, and the sandbags are stacked by the above-mentioned method so that the desired number of steps of the sandbags are positioned coaxially. The struts are driven into the sandbags at the locations so as to penetrate through the permeable material portion on the bottom surface of the lowermost sandbag from the upper surface opening of the uppermost sandbag.
[0011]
On the other hand, in the embankment method according to the present invention, sandbags are installed by the above-described method, a simple wall is constructed at an interval from the outermost sandbags, backfill soil is injected between the sandbags and the simple walls, and the piled up. The soil is filled up to the desired height inside the sandbag.
[0012]
[Action]
Even if a highly hydrous soil is put into the sandbag by making the middle part of the bottom of the sandbag and the lower side of the sandbag a non-permeable material, moisture is formed by this water-permeable material due to the weight of the soil itself. It is easily discharged outside from the part where it was done.
[0013]
In addition, an annular reinforcing band is sewn to the cylindrical portion of the bag and a bottom reinforcing band is sewn to the bottom, so that the bag has extremely high strength as a whole, and the hanging band has these annular reinforcing band and bottom reinforcing band. Since the bag is connected, it is possible to prevent the bag from being damaged by the weight of the internal soil when the sandbag is lifted.
[0014]
Further, after the installation, the hanging portion is cut in the middle, and the cut hanging portion can be used to connect to the hanging band of the adjacent sandbag, so that the falling and the collapse after the installation of the sandbag can be prevented. In addition, a column such as H steel can be easily driven vertically by using the inlet and the bottom center portion formed of a water-permeable material, and the stability of the sandbag at the time of embankment can be further enhanced. On the other hand, the earth pressure itself of the embankment can be almost completely received by the sandbag, and a simple decorative wall can be constructed on the outside of the sandbag with a concrete building block for construction or a sheet pile.
[0015]
DESCRIPTION OF THE PREFERRED EMBODIMENTS
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, and a bottom central portion 2 and a lower side portion 3 are formed of a material having a desired area of water permeability. The other portion 4 of the bag 1 is formed of a water-impermeable material. As the non-permeable material, for example, a mesh material can be used. However, the entire bag body 1 is made of polypropylene, and the bottom center part 2 and the lower side part 3 are not waterproofed. A waterproof treatment may be performed so as to be impermeable. Further, the location formed of the water-impermeable material is not limited to the illustrated area and location, and it is sufficient that moisture can be quickly discharged from the lower side of the bag body 1 to the outside.
[0016]
A desired number of annular reinforcing bands 5 are sewn on the outer periphery of the side surface of the bag at desired intervals. In the illustrated example, an example is shown in which three stitches are sewn at equal intervals with a slight gap between the side bottom and the upper end, but these may be selected as appropriate according to the size of the bag. Further, instead of sewing, it may be adhered by an adhesive or fixed by a method such as heat welding depending on the material of the annular reinforcing band 5 and the bag 1. The material of the annular reinforcing band 5 may be made of synthetic fiber or natural fiber as long as the material has a certain degree of tensile strength. The width may be appropriate. For example, in the illustrated example (the bag 1 is made of polypropylene and both the diameter and the height are 110 cm), the width of the annular reinforcing band 5 is set to 10 cm, and The upper ends are spaced at equal intervals by 10 cm and are three at equal intervals.
[0017]
Reference numeral 6 denotes two suspension bands bent in a U-shape, and a central portion thereof serves as a suspension portion 7. The both side portions are orthogonal to the annular reinforcing band 5 at equal intervals (at a quarter 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 hanging band 6 is separated from the bag body 1 except for the crossing portion 8 crossing the annular reinforcing band 5, and can be connected to the adjacent sandbag using the separating portion 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 the water-permeable material portion. Each end 12 of the suspension band 6 is sewn to the bottom reinforcing band 11. The length of the hanging portion 7 of the hanging band 6 is set to 1.2 to 3.0 times the diameter of the bag 1. The hanging part 7 is more convenient because it is used as a connecting rope by cutting this part after installation as described later, but if it is too long, the sandbag must be unnecessarily lifted high during sandbag installation work. Since the working efficiency is deteriorated, it is appropriate to set the above length as a compromise.
[0019]
The upper surface 13 of the bag 1 is closed with a water-permeable material or a non-water-permeable material as necessary, and a cutout 14 is formed radially at the center to serve as an inlet 15. Inside the input port 15, two cloths 16 each facing the input port 15 so as to sandwich the input port 15 so as to prevent the content from being scattered, each having one side end of the input port 15 on the upper surface 13. It is sewn to. An aperture string 17 is passed through the distal end of the radial cut 14 on the upper surface 13 so that the opening serving as the insertion port 15 in the form of a purse can be narrowed. That is, the charging port 15 is closed by the two cloths 16 for preventing the contents from scattering and the three materials of the upper surface 13 of the bag body 1 which can be narrowed like a drawstring.
[0020]
Next, a method for setting a sandbag using the sandbag according to the present invention will be described with reference to FIGS.
Open the inlet 15 of the sandbag described above and put an appropriate soil therein. Since the drainage in the sandbag is also considered, it can be used even when the water content is high. Then, when the earth and sand are put into the sandbag, the drawstring 17 is squeezed to narrow the inlet 15. The work up to this point may be performed at the sandbag setting location, or may be performed at another location.
[0021]
The soil to be put into the sandbag is not limited to the various types of soil described above, but may be damaged when the sandbag is damaged due to the weather such as rainfall or sunshine, or other external factors, or the construction of a permanent structure. Considering this, it is desirable to use stabilized soil. However, even in the case of stabilized soil, such as cement stabilization, which is hardened quickly before setting sandbags, is not suitable from the viewpoint of stability. In addition, a treated soil whose strength increases in response to pressure is desirable. For example, what is known as so-called Fe lime-based treated soil is suitable. This is a natural soil or natural soil and crushed stone as a soil stabilizer, iron oxide and lime, Al-Fe-Ti-based oxide composition or aluminum oxide, iron oxide and iron oxide containing aluminum oxide, iron oxide and titanium oxide as main components. It is a mixture of a mixture of titanium oxide and lime, or an oxidized Fe-based mixture containing iron oxide as a main component and sewage sludge incineration ash containing CaO, SiO2, and Al2O3 as a main component.
[0022]
Then, after the sandbags are laid flat at predetermined positions, the hanging portions 7 of the sandbags are cut at arbitrary positions to form connection ropes 18. Next, the cut hanging portion 7, that is, the connecting rope 18 is connected to the separating portion 9 of the hanging band 6 of the adjacent sandbag. An appropriate place to cut the hanging portion 7 may be selected according to the length of the hanging portion 7, but both sides of the cut portion (a total of four connecting ropes are formed) as connecting ropes 18. If it is desired to use it, it is cut at the center, and if only one side is required (total two connecting ropes), it may be cut near the upper surface 13 of one of the bags 1. The joining operation of the adjacent sandbags may be performed after all the sandbags are laid, but may be sequentially performed in parallel while performing the laying operation in some cases. This may be arbitrarily selected according to the working environment and conditions at that time.
[0023]
Then, as shown in FIG. 6, the sandbags are stacked in such a manner that the sandbags above and below the desired number of steps are positioned coaxially. It is of course possible to stack the sandbags in a stepped manner as in the prior art, but it is a feature of the sandbags of the present invention that they are stacked vertically coaxially in order to reduce the laying area and required number of sandbags. Then, as shown in FIG. 7, the struts 19 are driven into the sandbags at an arbitrary position in the piled sandbags so as to penetrate through the permeable material portion on the bottom surface of the lowermost sandbag from the upper opening of the uppermost sandbag. For example, H steel is used as the support. The number and number of the struts 19 may be appropriately selected according to the number of stacked sandbags and various conditions of the place where the sandbags are laid.
[0024]
Next, an embankment method using a sandbag according to the present invention will be described with reference to FIGS.
According to the above-described method, sandbags are stacked in a required number of steps as shown in FIG. Then, as shown in FIG. 7, a sheet pile 21 is driven as a simple wall at a distance from the sandbags 20 in the outermost row, and backfill soil 22 is put between the sandbags 20 and the sheet piles 21. Further, the soil 23 is buried inside the piled sandbags until the desired height is reached. Since the earth pressure of the soil 23 can be received by the sandbag, and the sheet pile 21 to be constructed outside thereof only needs to be able to receive only the earth pressure of the backfill soil 22, the sheet pile 21 is not so full-scale. Is also good.
[0025]
In the illustrated example, an example is shown in which 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. Since it is only necessary to be able to receive the above, it may be constructed by driving into the ground like a sheet pile, or by stacking, for example, concrete building blocks for construction. In addition, as shown in FIG. 6, it is also possible to embed without using the support | pillar 19.
[0026]
【The invention's effect】
As described above, according to the sandbag according to the present invention, the bottom central part and lower side of the bottomed cylindrical bag are made of a material having a desired area of water permeability, and the other parts are made of a water-impermeable material. A ring-shaped reinforcing band is sewn at a desired interval on the outer periphery of the side surface of the bag body at a desired interval, and the central portion of the two hanging bands bent into a U-shape is used as a hanging portion, and both side portions are respectively formed at equal intervals. The suspension belt is sewn to the annular reinforcement band at the intersection with 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 surface and the non-permeable material part around it. Each end of the hanging band is sewn to this bottom reinforcing band, so that the annular reinforcing band can suppress side swelling of heavy contents with high water content, making it easy to lay sandbags without gaps. Can be carried out, and when lifting and stacking with the 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. Further, the hanging band can be used as a material for binding with an adjacent sandbag after the sandbag is installed.
[0027]
Furthermore, 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, a cut is formed radially in the center portion to form an inlet, and the inside of the inlet portion is for preventing content scattering. Because one side of the cloth is sewn, the cut from the input port functions as a hopper, making it easy to put in the soil, while sewn a cloth to prevent the contents from scattering. This can prevent the soil once inside from jumping out. Alternatively, 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 unnecessarily long when the sandbag is lifted, and the length of the hanging part for connection is set after installation. When used as a string, it is possible to secure a length suitable for tying to an adjacent sandbag.
[0028]
According to the method for setting a sandbag according to the present invention, after putting the soil into the sandbag of the present invention and laying the sandbag at a predetermined position, each sandbag is cut at an arbitrary position of a hanging portion, and the cut suspension is used. The part is tied to the hanging part of the adjacent sandbag so that the sandbags can be integrated, so that the adjacent sandbags can be securely connected, the sandbags can be prevented from falling and structural stability can be secured, Therefore, it becomes possible to stack the sandbags vertically without shifting them stepwise.
[0029]
Furthermore, the sandbags of the present invention are stacked by the above-described method so that the desired number of upper and lower sandbags are coaxially positioned. The struts were driven so as to penetrate through the permeable material part on the bottom of the sandbag, so the sandbags were stacked vertically without shifting in steps, so that the struts could be penetrated as if skewered in the center of the sandbag. Can be further enhanced in the vertical direction.
[0030]
On the other hand, according to the embankment method according to the present invention, sandbags are installed by the above-described method, a simple wall is constructed at an interval from the outermost sandbag, and backfill soil is injected between the sandbags and the simple walls. In addition, since the soil was laid up to the desired height inside the piled sandbags, compared to the conventional method of stacking sandbags stepwise, the installation area of sandbags and the same height for stacking sandbags at the same height The required number of sandbags can be reduced, and the simple wall hardly receives the earth pressure of the embankment, so that the outside of the sandbags can be constructed by a simple method.
[Brief description of the drawings]
FIG. 1 is a front view of a sandbag according to the present invention.
FIG. 2 is a bottom view of the sandbag of the present invention.
FIG. 3 is a plan view of the 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 a sandbag installation method of the present invention.
FIG. 6 is an explanatory view showing an embodiment of the embankment method of 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 2 Bottom center part 3 Side lower part 4 Other part 5 Annular reinforcing band 6 Hanging band 7 Hanging part 8 Crossing part 9 Separating part 10 Non-permeable material part 11 Bottom reinforcing band 12 Tip 13 Upper surface 14 Cut 15 Injection Mouth 16 Cloth 17 Squeezing cord 18 Connecting rope 19 Prop 20 Sandbag 21 Sheet pile 22 Backfill soil 23

Claims (6)

The bottom central part and the lower side of the bottomed cylindrical bag are made of a material having a desired area of water permeability, and the other parts are formed of a non-permeable material, and annular reinforcing bands are formed at desired intervals around the outer periphery of the bag body. The center part of the two hanging bands sewn in a desired number and bent in a U-shape is used as a hanging portion, and both side portions are respectively orthogonal to the annular reinforcing band at equal intervals, and the hanging band intersects with the annular reinforcing band. Sewn to the annular reinforcing band, and sewn the bottom reinforcing band at the boundary between the permeable material part at the center of the bottom surface and the non-permeable material part around it, and sewed each tip of the hanging band to this bottom reinforcing band Sandbag bag characterized by doing. Close the upper surface of the bag with a water-permeable material or a water-impermeable material, form a radial cut in the center part and use it as an input port, and inside the input port part, put one side of a cloth to prevent content scattering. The sandbag according to claim 1 sewn. The sandbag according to claim 1 or 2, wherein the length of the hanging portion is 1.2 to 3.0 times the diameter of the sandbag. After putting the soil in the sandbag according to claim 1, or after laying the sandbag at a predetermined position, each sandbag is cut at an arbitrary position of a hanging portion, and the cut hanging portion is suspended from an adjacent sandbag. A method for setting a sandbag, wherein the sandbag is integrated with a band portion. The method according to claim 4, wherein the sandbags according to claim 1 are stacked such that the desired number of upper and lower sandbags are positioned coaxially, and the uppermost opening of the uppermost sandbag for any given sandbag among the stacked sandbags. A sandbag installation method, characterized in that a strut is driven so as to penetrate through the water-permeable material portion on the bottom of the sandbag at the bottom of the sandbag. A sandbag is installed by the method according to claim 5, a simple wall is constructed at a distance from the outermost sandbag, backfill soil is injected between the sandbags, and the desired sandbag is placed inside the stacked sandbag. An embankment method characterized by embankment of the soil up to the height.

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