JP3574014B2 - Embankment reinforcement pack and embankment method using the same - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an embankment reinforcing pack and an embankment construction method using the same, and more specifically, can easily modify any kind of soil without selecting a soil such as sandy soil or coarse-grained soil, and handle the soil. The present invention relates to an embankment reinforcing pack which is easy to transport, store and construct, and an embankment method using the same.
[0002]
[Prior art]
Conventionally, in various civil engineering structures such as roads, railways, residential land development, etc., a band-shaped reinforcing material such as a steel strip is inserted and laid in the backfill material of the wall to enhance the strength and stability of the entire embankment. However, in general, it is widely implemented as a tail army method.
[0003]
However, in the above-mentioned construction method, the strength and stability of the embankment are maintained by the frictional force between the embankment and the band-shaped reinforcement (usually referred to as a strip) inserted and laid in the embankment. It is said that the embankment material which does not generate a frictional force between them is not suitable. For example, it is said that the above method cannot be carried out in the place of the soil material containing a certain amount or more of fine particles.
[0004]
In order to solve the above-mentioned problem, as shown in FIG. A sandwich method has been implemented.
However, over a vast area such as a road, a railroad, and a residential land development site, the work of shaving the fine-grained soil 21 in a portion where the belt-shaped reinforcing material 22 is laid out and then putting the coarse-grained soil 23 is extremely enormous. It requires time and effort, and the construction period is prolonged and the cost is inevitably increased. Moreover, the embankment method is often performed on the slopes of slopes, so that it is often difficult to carry large-scale machines because of poor scaffolding, and the sandwich method under such circumstances is enormous. Complicated, poor workability, and low productivity is unavoidable.
[0005]
[Problems to be solved by the invention]
The present invention solves the above problems, and uses an embankment reinforcing pack and an embankment reinforcing pack that can be easily modified even if the soil is unsuitable for the embankment method and can improve the strength and stability of the embankment. It provides an embankment method.
[0006]
[Means for Solving the Problems]
The inventor of the present invention has conducted intensive studies to solve the above problems, and as a result, an embankment reinforcing pack in which an embankment modifying material such as coarse-grained soil is stored in a water-soluble bag can be manufactured in advance at a factory at low cost, and Because it is stored inside, it can be easily transported to the construction site, and can be easily laid on one or both sides of the upper and lower sides of the belt-shaped reinforcement by machine or human power, and the water-soluble bag is It melt | dissolves and becomes the state similar to the conventional sandwich construction method, As a result, it discovered that the soil quality was improved and the embankment excellent in intensity | strength and stability was obtained, and arrived at this invention.
[0007]
That is, the first aspect of the present invention is that the embankment modifying material is stored in a bag made of a water-soluble resin film, and the upper and lower portions of the band-shaped reinforcing member buried in the soil to exert a frictional effect with the soil. The embankment reinforcing pack is characterized in that it is used by laying it on one side or both sides (Claim 1).
[0008]
In a preferred embodiment, the embankment modifying material is a material having high friction, and the embankment modifying material is a material having a high friction.
[0009]
In a preferred embodiment, the embankment reinforcing material is a banking reinforcing pack according to claim 1, wherein the embankment modifying material comprises a coarse-grained soil having a fine particle size of 75 μm or less and 25% or less.
[0010]
In a preferred embodiment, the embankment-reinforcing pack according to claim 1, wherein the embankment modifying material is a foam glass piece.
[0011]
A second aspect of the present invention is that a band-like reinforcement buried in the soil and exerting a frictional effect with the soil is attached to the inside of the standing wall in a substantially horizontal direction, and embankments are formed above and below the band-like reinforcement. The embankment method according to any one of claims 1 to 4 is laid on one or both sides of the upper and lower sides of the belt-shaped reinforcing body when performing the embankment method. 5).
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Examples of the water-soluble resin that is the material of the film used in the present invention include polyacrylamide, polyacrylic acid, polymethacrylic acid, polyitaconic acid, polyvinyl alcohol, polyethylene oxide, polyvinyl pyrrolidone, polyvinyl methyl ether, methyl cellulose, and the like. Among them, polyvinyl alcohol, polyethylene oxide, and methylcellulose are particularly preferable from the viewpoint of film forming property and the like.
[0013]
The embankment modifying material used in the present invention is not particularly limited as long as it is a material having a large friction with the belt-shaped reinforcing member. For example, the content of fine particles having a soil particle diameter of 75 μm or less is 25% or less. Foamed glass pieces such as coarse-grained soil and foamed glass aggregate obtained by foaming glass dust are suitable, and these are used alone or in combination as necessary.
[0014]
The embankment modifying material is housed in a bag made of the water-soluble resin film to form an embankment reinforcing pack of the present invention. The shape of the bag is not particularly limited, and may be any of a rectangle, a circle, an ellipse, and the like.
As for the size of the embankment reinforcing pack, the width is preferably about 2 to 4 times the width of the band-shaped reinforcing body, the length is preferably about 1 to 1.2 times the length of the band-shaped reinforcing body, and the thickness is preferably about 5 to 20 cm. However, it is not always necessary to continuously lay the length, and the length may be intermittently laid. In this case, the length is, for example, in the range of about 30 cm to 1.5 m, and preferably about 5 to 15 kg in weight and large enough to be easily transported by human power. The thickness of the film is appropriately determined so that the film is not broken at the time of handling or transportation while the embankment modifying material is stored, and is dissolved in a short time with moisture.
[0015]
In order to perform embankment using the embankment reinforcing pack of the present invention as described above, a wall body is erected, and a band-shaped reinforcement body is attached to the inside of the wall body (that is, the embankment side) in a substantially horizontal direction. The above-mentioned embankment reinforcing pack is laid on one or both sides of the upper and lower sides of the body, and after embankment is carried out in accordance with a conventional method, rolling is completed to complete the construction.
It should be noted that the strength and stability of the embankment reinforcing pack are greater when the embankment reinforcing pack is laid on both sides than on one side of the belt-shaped reinforcing body. Therefore, whether to lay on one side or on both sides may be appropriately determined according to the desired strength and stability.
If the soil has little moisture, the embankment can be performed while spraying water on the soil near the embankment reinforcing pack.
[0016]
The wall used in the present invention is made of a material having high water resistance and durability such as concrete, reinforced concrete with glass fiber or carbon fiber, lightweight cellular concrete, slate, and metal such as aluminum, stainless steel, galvanized steel and the like. It is preferable that a metal fitting having a connecting means such as a bolt hole for mounting the belt-shaped reinforcing member is buried or mounted in advance on the inside of the wall, that is, on the embankment side.
[0017]
The belt-shaped reinforcing member used in the present invention is made of a steel material subjected to a rust prevention treatment such as galvanization or a synthetic resin.In order to increase the frictional force, it is preferable to provide ribs or projections on the surface. Those not provided can of course be used. Examples of the synthetic resin include polyethylene, polyolefin such as polypropylene, styrene resin, acrylic resin, methacrylic resin, vinyl chloride resin, vinylidene chloride resin, ABS resin, polyamide resin, and polyester resin. Depending on the type, two or more types are used in combination. For example, the size of the belt-shaped reinforcement is preferably a galvanized steel material having a width of about 60 mm and a thickness of about 5 mm.
[0018]
At one end of the belt-shaped reinforcing member, a connecting means such as a bolt hole for attaching to a metal fitting provided inside the wall body is provided. Connecting means can also be provided at the other end of the belt-shaped reinforcement so that it can be connected to another belt-shaped reinforcement and extended to a desired length.
[0019]
After attaching the band-shaped reinforcement body inside the wall body erected on the foundation concrete, perform soil extraction, fill up to the level of the band-shaped reinforcement body, and then lay the embankment reinforcement pack on the surface, Alternatively, a groove having substantially the same size as that of the embankment reinforcing pack is dug under the belt-like reinforcing body, and the embankment reinforcing pack is accommodated and laid in the groove. Furthermore, if necessary, after laying the embankment reinforcing pack also on the upper part of the belt-shaped reinforcing body, the soil is unwound, the above operation is repeated as necessary, and then the embankment is rolled. I do.
[0020]
The embankment reinforcement pack buried in the embankment dissolves the bag made of the water-soluble resin film due to the moisture in the soil, so that the bag originally did not exist, and the embankment modifying material was directly in contact with the belt-shaped reinforcement. They contact and interact with each other to exert the effect of reinforcing and stabilizing the embankment.
[0021]
【Example】
Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to only these examples.
[0022]
Example 1
In a substantially rectangular long bag 2 made of a polyvinyl alcohol film (trade name: Hitheron (registered trademark), manufactured by Nippon Synthetic Chemical Industry Co., Ltd., thickness: 40 μm), an embankment modifying material 3 made of river sand (particle size: 75 μm) The content of the following fine soil particles was about 20%) to obtain an embankment reinforcing pack 1 of the present invention as shown in FIG.
[0023]
Example 2
A heat-sealing section in which substantially rectangular sachets 2a, 2b, and 2c made of a polyvinyl alcohol film (trade name: Hitheron (registered trademark), manufactured by Nippon Synthetic Chemical Industry Co., Ltd., thickness: 20 μm) have perforations (not shown). The embankment modifying material 3 made of river sand (content of fine soil particles having a particle diameter of 75 μm or less is about 20%) is stored in each of the sachets 2a, 2b, and 2c. An embankment reinforcing pack 1 of the present invention as shown was obtained.
The embankment reinforcing pack 1 of the present embodiment can be used as a long strip as it is, and the sachets 2a, 2b, and 2c obtained by being separated by the heat sealing portion 4 can be used as the embankment reinforcing pack.
[0024]
Example 3
Embankment was performed using the embankment reinforcing pack shown in FIG.
That is, as shown in FIG. 3, a crushed stone 6 is laid on the lower part of the wall of the slope 5 formed by cutting out a part of the sloping ground, leveling is performed, and the foundation concrete 7 is cast thereon. Next, the wall unit 8a is erected on the foundation concrete 7, and the soil (fine-grained soil) 10 is unwound to the level of the band-shaped reinforcing member mounting bracket (not shown) inside the wall unit 8a. And then roll it.
[0025]
Next, a groove having a size capable of accommodating the embankment reinforcing pack is dug in the surface of the compacted soil, and the embankment reinforcing pack 11a is accommodated and laid in the groove.
Next, the band-shaped reinforcing member 9a with the rib 12 is attached to the band-shaped reinforcing member mounting bracket inside the wall unit 8a, and the embankment reinforcing pack 11a is laid on the reinforcing member 9a.
[0026]
Next, another wall unit 8b is piled up again on the wall unit 8a, the soil (fine-grained soil) 10 is unwound, and after compaction, a groove is dug, and the embankment reinforcing pack 11b is placed in the groove. After that, the band-shaped reinforcing member 9b is attached inside the wall unit 8b, and the embankment reinforcing pack 11b is laid on the reinforcing member 9b. Thereafter, the above operation is repeated to complete the predetermined embankment.
In addition, as shown in FIG. 4, the width of the embankment reinforcing pack (11a in the figure) was larger (about twice) than the width of the belt-shaped reinforcing body (9a in the figure).
Furthermore, although not shown, the top of the embankment is provided with, for example, a drainage groove and is paved to be a road or the like.
[0027]
Example 4
Embankment was performed using the embankment reinforcing pack shown in FIG.
That is, as shown in FIG. 5, the pouches 2a, 2b, and 2c of the pack are separated from the perforations of the heat seal portion 4, and grooves for accommodating the pack are formed above and below the band-shaped reinforcing members 9a, 9b, and 9c. It is the same as Example 3 except that it was laid intermittently on the surface of the compacted soil without digging.
[0028]
In the third and fourth embodiments, the case of modifying the geology of the fine-grained soil having a small particle diameter such that the frictional force with the belt-shaped reinforcing body cannot be sufficiently expected has been described. The present invention is not limited to this, and can be applied to the case of coarse-grained soil having a large particle size in which the frictional force with the belt-shaped reinforcing member cannot be sufficiently expected, and it goes without saying that the soil can be modified.
[0029]
【The invention's effect】
As described above, the embankment reinforcing pack of the present invention can be manufactured in a factory in advance, and can be prepared in a desired size, large and small, so that handling, transportation, storage, and inventory management are easy.
[0030]
Further, since it is only necessary to lay the pack in the field, it can be laid easily by human power without using a large-sized machine, and it is particularly suitable for a field where the scaffold is poor and the machine is difficult to enter.
[0031]
In addition, according to the present invention, while reducing wall creep, which is one of the structural problems involved in fine-grained soil, and improving the drainage effect, the secondary pressure of reducing water pressure affecting earth pressure is reduced. You can also get a positive effect.
[0032]
As described above, the present invention aims to industrialize and modernize the conventional site-dependent embankment method for the first time, and its usefulness is extremely large.
[Brief description of the drawings]
FIG. 1 is a partially cutaway perspective view showing an embodiment of an embankment reinforcing pack of the present invention.
FIG. 2 is a partially cutaway schematic view showing another embodiment of the embankment reinforcing pack of the present invention.
FIG. 3 is a schematic view showing an example of an embankment method of the present invention.
FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;
FIG. 5 is a schematic view showing another example of the embankment method of the present invention.
FIG. 6 is a schematic view showing a conventional embankment method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Embankment reinforcement pack 2 Long bag 2a, 2b, 2c Small bag 3 Embankment modification material 4 Heat seal part 5 Slope 6 Crushed stone 7 Basic concrete 8 Wall 8a, 8b, 8c Wall unit 9a, 9b, 9c Belt reinforcement 10 soil (fine grain soil)
11a, 11b, 11c Embankment Reinforcement Pack 12 Rib 21 Fine Grain Soil 22 Band Reinforcement Material 23 Coarse Grain

Claims (5)

The embankment modifying material is stored in a bag made of a water-soluble resin film, and laid on the upper or lower one or both sides of a belt-shaped reinforcing body buried in the soil and exerting a friction effect with the soil. An embankment reinforcement pack characterized by being used. The embankment reinforcing pack according to claim 1, wherein the embankment modifying material is made of a material having high friction. The embankment reinforcing pack according to claim 1, wherein the embankment modifying material comprises a coarse-grained soil having a fine-grained portion having a particle size of 75 µm or less and 25% or less. The embankment reinforcing pack according to claim 1, wherein the embankment modifying material comprises a foam glass piece. Inside the standing wall, a band-shaped reinforcement body buried in the soil and exerting a friction effect with the soil is attached in a substantially horizontal direction, and when embankment is applied above and below the band-shaped reinforcement body, the band-shaped reinforcement is applied. An embankment method comprising laying the embankment reinforcing pack according to any one of claims 1 to 4 on one or both sides of the body.

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