JP2006016876A - Arrangement structure of face drainage material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an arrangement structure of a face drainage material, which is excellent in strength, durability, etc., and which enables vertical and horizontal proper drainage by simple work in backside drainage of a retaining wall. <P>SOLUTION: In this arrangement structure, a plurality of face drainage materials 1 are continuously arranged along the retaining wall 4. As shown in Fig 2., the face drainage material is equipped with a long strip-shaped face member 3 made of a synthetic resin, which has a continuous void by forming projections and depressions on a surface, and a permeable sheet 2 for covering the face member 3. In the face drainage material, an opening 10 is provided on the long side of the permeable sheet 2, and the permeable sheet 2 is elongated to the outside from at least either of the front side and backside of the opening 10. The face drainage materials 1 are juxtaposed in the state of making the openings 10 of the permeable sheets 2 butt against each other, and an elongated part 20 of the permeable sheet 2 is superposed on the permeable sheet 2 of the adjacent face drainage material 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an arrangement structure of a planar drainage material in the field of civil engineering, and in particular, in drainage on the back surface of a retaining wall, enables easy drainage in the vertical and horizontal directions with simple work, and is excellent in strength and durability. The present invention relates to an arrangement structure of a planar drainage material.

  Conventionally, a wide variety of planar drainage materials have been proposed in the civil engineering field, and are arranged in various forms on the back surface of the retaining wall to form a drainage structure.

As a typical example of these, Patent Document 1 discloses that the drainage material is securely fixed to the back surface of the retaining wall without causing cracks in the retaining wall, and the suspension member is attached to the back surface of the retaining wall. An arrangement structure of a planar drainage material that suspends the upper end portion of the stacked backfill drainage material is disclosed.
Further, in Patent Document 2, a support is attached using a drain hole of a retaining wall, a tension wire such as a wire is stretched between the supports, and a drainage material is held between the retaining wall and the tension wire. An arrangement structure of a planar drainage material is disclosed.
JP-A-8-189300 JP-A-63-112762

However, in the planar drainage material of Patent Document 1, the uneven resin plate is divided in units of the permeable cylindrical body, so that the drainage efficiency in the longitudinal direction of the permeable cylindrical body is in the lateral direction. In addition, the planar drainage material of Patent Document 2 has a problem that both are limited in application, such as a small compressive strength by using a meandering thread-like body as a core material.
And, in both of these conventional planar drainage material arrangement structures, when using both planar drainage materials continuously adjacent to each other, in order to ensure good drainage, the skin material is cut once and the core materials are separated from each other. After the contact, the adjacent contact portion is again required to be covered with the outer skin material.

  In view of the problems of the conventional planar drainage arrangement structure described above, the present invention enables good drainage in the vertical and horizontal directions by simple operations in the drainage of the rear surface of the retaining wall, in terms of strength, durability, etc. It is another object of the present invention to provide an excellent arrangement of planar drainage material.

  In order to achieve the above object, the planar drainage material disposing structure of the present invention is a planar drainage material disposing structure in which a plurality of planar drainage materials are continuously disposed along the retaining wall. Forming a continuous belt-shaped synthetic resin sheet-like member having continuous voids and a water-permeable sheet covering the synthetic resin-made sheet-like member, and having an opening on the long side of the water-permeable sheet While using a planar drainage material that extends the water-permeable sheet outward from at least one of the front surface side and the back surface side of the opening portion, the openings of the water-permeable sheet are butted together to arrange the planar drainage material in parallel, The extending portion of the water permeable sheet is polymerized on the water permeable sheet of the adjacent planar drainage material.

  In this case, the planar drainage material can be disposed such that the long side is horizontal or vertical.

  Moreover, a through-hole can be provided in the bottom part of the recessed part of a synthetic resin planar member, and / or the top part of a convex part.

  In addition, the synthetic resin planar member can be formed using a polyolefin-based resin as a main component.

  A water-permeable sheet can be formed with a woven fabric or a nonwoven fabric.

  The woven or non-woven fabric of the water permeable sheet can be formed of synthetic resin fibers.

According to the arrangement structure of the planar drainage material of the present invention, in the arrangement structure of the planar drainage material in which a plurality of planar drainage materials are continuously arranged along the retaining wall, by forming irregularities on the surface A long strip-shaped synthetic resin sheet-like member having continuous voids and a water-permeable sheet covering the synthetic resin sheet-like member, and an opening is provided on the long side of the water-permeable sheet, and the opening Using a planar drainage material with a water-permeable sheet extending outward from at least one of the front and back sides of the part, the openings of the water-permeable sheet are butted together and the planar drainage material is juxtaposed, and the water-permeable sheet is extended Since the part is polymerized on the water-permeable sheet of the adjacent planar drainage material, the synthetic resin sheet-like member is directly connected at the opening of the water-permeable sheet, and a large gap is formed in the synthetic resin sheet-like member also at the joint. And ensure maximum water distribution By superposing the extended part of the water permeable sheet on the water permeable sheet of the adjacent planar drainage material, the planar drainage material is continuously arranged on the back surface of the retaining wall while preventing the inflow of earth and sand into the internal gap. can do.
The total drainage volume and capacity of all the planar drainage materials arranged on the back of the retaining wall are almost the same as the maximum drainage volume and capacity of each individual planar drainage material. It is obtained and can be used for a long time.

  In addition to the above-described effects, the work efficiency is greatly improved by arranging the planar drainage material so that the long side is horizontal or vertical.

  Further, by providing a through-hole at the bottom of the concave portion and / or the top of the convex portion of the synthetic resin planar member, the detour between the inner front and back surfaces of the synthetic resin planar member is reduced and the detour is reduced. The amount of water will immediately flow downward.

  In addition, by forming the synthetic resin sheet-like member with polyolefin resin as the main component, the necessary strength and flexibility can be maintained for a long time without corrosion, and the problem of environmental pollution can be avoided. Can do.

  In addition, by providing the water-permeable sheet with a woven fabric or a non-woven fabric, the required water permeability level and strength can be easily selected according to these grades. Furthermore, by forming with a synthetic resin fiber, it is necessary without being corroded. The strength and flexibility can be maintained for a long time.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a planar drainage arrangement structure of the present invention will be described with reference to the drawings.

In FIG. 1, the 1st Example of the arrangement | positioning structure of the planar drainage material of this invention is shown.
This arrangement structure of the planar drainage material is to continuously arrange a plurality of planar drainage materials 1 along the retaining wall 4, and is continuous by forming irregularities on the surface as shown in FIG. A long strip-shaped synthetic resin sheet-shaped member 3 having a gap and a water-permeable sheet 2 covering the synthetic resin sheet-shaped member 3 are provided, and an opening 10 is provided on the long side of the water-permeable sheet 2. The planar drainage material 1 in which the water-permeable sheet 2 is extended outward from at least one of the front surface side and the back surface side of the opening 10 is used.
And it arrange | positions the opening part 10 of the water-permeable sheet 2, and arranges the planar drainage material 1 in parallel, and superposes the extension part 20 of the water-permeable sheet 2 on the water-permeable sheet 2 of the adjacent planar drainage material 1. To do.
In this case, the respective planar drainage materials 1 are arranged such that the long sides lie sideways, and are sequentially installed from the bottom on the back surface of the retaining wall 4.

The uppermost and lowermost planar drainage materials 1 are provided with an opening 10 on one long side of the water-permeable sheet 2, and the water-permeable sheet 2 is extended from the front side or the back side of the opening 10. .
In addition, as shown in FIG. 3A, the intermediate planar drainage material 1 is provided with openings 10 on two long sides of the water-permeable sheet 2, and the water-permeable sheet is formed from the surface side at one opening 10. 2 is extended, the water permeable sheet 2 is extended from the back surface side at the other opening 10, and the extended portion 20 is joined to the front and back surfaces of the connection partner with the connected planar drainage materials 1. I am doing so.
In addition, as shown in FIG. 3 (b), the planar drainage material 1 can extend the water permeable sheet 2 from the front and back both sides with the opening 10 on one side, whereby the extending portion 20. Can be bonded to the front and back surfaces of the connection partner.
Moreover, as shown in FIG.3 (c), although the length direction edge part of the planar drainage material 1 cut | disconnects the wound long thing and obtains the planar drainage material 1, it usually opens, Since the opening is separately covered with another water-permeable sheet 2 to prevent inflow of earth and sand, the extended portion 20 may or may not be provided.
In the case of the present invention, the number of the extending portions 20 provided in the planar drainage material 1 and the portions to be provided are not particularly limited, and one extending portion 20 between the adjacent planar drainage materials 1 is the other. It is only necessary to overlap the water permeable sheet 2.

As shown in FIG. 2, the synthetic resin sheet-like member 3 is provided with a concave portion 31 and a convex portion 32 that are both regular and hollow with regularity on both the front surface and the back surface thereof. A through hole 30 is provided at the bottom of the projection and the top of the projection 32.
In this case, the concave portion 31 on the front surface side becomes the convex portion 32 on the rear surface side, but the position and number of the through holes 30 provided in the synthetic resin planar member 3 are not particularly limited.
In addition, the synthetic resin planar member 3 can be preferably used because of its good corrosion resistance, and is preferably a thermoplastic resin because of its good moldability. Polyvinyl chloride, vinyl acetate, etc., polyolefin polyethylene, polypropylene, etc., mixtures of these synthetic resins, copolymers of these synthetic resins with ethylene-vinyl acetate, elastomers, modified polyolefins, etc. Since the mixture can be used more suitably and there are few pollution factors, a polyolefin-based synthetic resin can be optimally used. It goes without saying that rubber or the like can be used regardless of natural or synthetic.

  Moreover, the permeable sheet 2 joined to the peripheral surface of the synthetic resin sheet-like member 3 can use a woven fabric or a nonwoven fabric made of fibers regardless of natural or synthetic, and synthetic fibers are preferably used because of high corrosion resistance. It will be possible. In this case, there are many types of woven fabrics and non-woven fabrics in thickness, strength, porosity, price, etc., and these may be selected as appropriate according to usage conditions and design.

On the other hand, the surface drainage material is disposed on the back surface of the retaining wall 4 with the strip-shaped surface drainage material 1 disposed horizontally at the lowermost portion, and crushed stones, cobblestones, and earth and sand are disposed in order behind them. Set up.
Next, the second-stage strip-shaped surface drainage material 1 is disposed horizontally while the openings 10 are brought into contact with each other, and one extended portion 20 is placed on the other water-permeable sheet 2 while being stacked horizontally. Arrange crushed stones, cobblestones, and earth and sand in order behind them.
By repeating such an operation up to the uppermost part of the back surface of the retaining wall 4, the disposition construction of the planar drainage material is performed.

  Thus, since the arrangement | positioning structure of the planar drainage material of a present Example can connect the edge parts of the synthetic resin planar member 3 directly with the opening part 10 along the opening part 10, also in this connection part, too. The amount of drainage equivalent to that of a single planar drainage material can be secured, there is no reduction in drainage capacity when using a plurality of sheets with no gaps, and the extended portion 20 of the extended water-permeable sheet 2 is connected to the connection partner. By lap-joining on the water-permeable sheet 2, the infiltration of earth and sand into the connecting portion can be completely prevented.

Moreover, while providing the opening part 10 in two adjacent sides of the water-permeable sheet 2, the water-permeable sheet 2 is extended from at least one of the surface side and the back surface side of each opening part 10, and thereby a horizontal and horizontal grid-like connection is achieved. It becomes possible.
Furthermore, while providing the opening part 10 in 2 sides which the water-permeable sheet 2 opposes, by extending the water-permeable sheet 2 from at least one of the surface side of each opening part 10 and a back surface side, it is linear form, such as a vertical alignment or a horizontal alignment Can be connected.

Further, by extending the water permeable sheet 2 from the front surface side at one opening 10 and extending the water permeable sheet 2 from the back surface side at the other opening 10, the planar drainage materials 1 connected to each other can be extended. The provided water-permeable sheet 2 can be bonded to the front and back surfaces of the connection partner.
And by extending the water-permeable sheet 2 from the front and back both sides with the opening part 10 of one side, the extended water-permeable sheet 2 can be joined to the surface and back surface of a connection other party.

  Moreover, by providing the through hole 30 at the bottom of the recess 31 or / and the top of the protrusion 32, the water passage state is qualitatively, the amount of water inside the planar drainage material 1 is more equalized, and the rectangular shape is If it is a long belt-like body, the connection work in the long direction will be reduced.

  Further, by forming the synthetic resin planar member 3 with a polyolefin resin as a main component, the necessary strength and flexibility can be maintained for a long time without corrosion, and the problem of environmental pollution can be avoided. Moreover, if the water-permeable sheet 2 is a woven fabric or a nonwoven fabric, a required water-permeable level and intensity | strength can be easily selected with these grades.

In addition, the water-permeable sheet 2 made of woven fabric is arranged on one side of the synthetic resin sheet-like member 3, and the water-permeable sheet 2 made of nonwoven fabric is arranged on the other side, and these water-permeable sheets 2 are joined. Depending on the situation of use, the characteristics of each woven fabric and non-woven fabric can be utilized.
Furthermore, by forming the woven or non-woven fabric of the water-permeable sheet 2 with synthetic resin fibers, the water-permeable sheet 2 can be maintained over a long period of time with the necessary strength and flexibility without being corroded. In addition, the range of material selection is greatly expanded.

In addition, in the said Example, although the extension part 20 of the water-permeable sheet 2 was superposed | polymerized on the water-permeable sheet 2 of the adjacent planar drainage material 1 also on the side which faces the retaining wall 4, FIG. Polymerization of a water-permeable sheet on the side facing the retaining wall 4 where there is no fear of inflow of earth and sand into the internal gap, as in the modification of the first embodiment of the planar drainage arrangement structure of the present invention shown in a) Can be omitted.
In this case, for example, by covering the opening 10 at the lower end surface of the lowermost sheet drainage material 1 with the extending portion 20 of the water permeable sheet 2, the water permeable sheet 2 as shown in FIG. It is possible to construct a drainage structure with one type of planar drainage material 1 in which the opening 10 is provided on the two long sides of the sheet and the permeable sheet 2 is extended from the surface side at one opening 10. it can.

FIG. 5 shows a second embodiment of the planar drainage arrangement structure of the present invention.
The arrangement structure of this planar drainage material is the same as the first embodiment, in which a plurality of planar drainage materials 1 are continuously arranged along the retaining wall 4, and by forming irregularities on the surface. A long strip-shaped synthetic resin sheet-like member 3 having continuous voids and a water-permeable sheet 2 covering the synthetic resin sheet-like member 3, and an opening 10 is formed on the long side of the water-permeable sheet 2. While providing, the planar drainage material 1 which extended the water-permeable sheet 2 to the outer side from at least one of the surface side of this opening part 10 and a back surface side is used.
And it arrange | positions the opening part 10 of the water-permeable sheet 2, and arranges the planar drainage material 1 in parallel, and superposes the extension part 20 of the water-permeable sheet 2 on the water-permeable sheet 2 of the adjacent planar drainage material 1. To do.
In this case, each planar drainage material 1 is disposed on the back surface of the retaining wall 4 so that the long side is vertical.

The planar drainage material 1 on both sides is provided with an opening 10 on one long side of the water-permeable sheet 2, and the water-permeable sheet 2 is extended from the front side or the back side of the opening 10.
In addition, the intermediate planar drainage material 1 is provided with openings 10 on two long sides of the water-permeable sheet 2, and the water-permeable sheet 2 is extended from the surface side at one opening 10, and the other opening In FIG. 10, the water permeable sheet 2 is extended from the back surface side, and the extended portion 20 is joined to the front and back surfaces of the connection partner with the planar drainage materials 1 to be connected.
In addition, since the other structure of the planar drainage material 1 used by this 2nd Example becomes the same as that of a 1st Example, the description is abbreviate | omitted.

  Moreover, the planar drainage material 1 used by the arrangement | positioning structure of this invention is the surface side of each edge | side as needed, as the extension part 20 of the water-permeable sheet 2 is 1st Example and 2nd Example. Although it can be provided on the back surface side or the both surface side, all will be left to the design as appropriate, and the same applies to performance such as water permeability, water flow, durability and the like.

Further, in the planar drainage material 1, the joining means between the water permeable sheet 2 and the synthetic resin planar member 3 includes adhesion, adhesion, welding, screwing, staple prevention, and the like.
And the joining of the extending part 20 and the water-permeable sheet 2 adjacent to each other may be simply overlapped, or a joining means similar to the above may be adopted.
These are appropriately determined according to the production design and usage of the planar drainage material 1.

Thus, the planar drainage material disposing structure of the present embodiment is formed in the surface drainage material disposing structure in which the plural planar drainage materials 1 are continuously disposed along the retaining wall 4. A long strip-shaped synthetic resin sheet-like member 3 having continuous voids and a water-permeable sheet 2 covering the synthetic resin sheet-like member 3, and an opening is formed in the long side of the water-permeable sheet 2. While providing the part 10, and using the planar drainage material 1 which extended the water-permeable sheet 2 to the outer side from at least one of the surface side of the opening part 10, and the back surface side, the opening parts 10 of the water-permeable sheet 2 are faced | matched and planar Since the drainage material 1 is juxtaposed and the extending portion 20 of the water permeable sheet 2 is polymerized on the water permeable sheet 2 of the adjacent planar water drainage material 1, the synthetic resin planar member is formed at the opening 10 of the water permeable sheet 2. 3 is connected directly to the surface member 3 made of synthetic resin at the joint. As a result, it is possible to maximize the flow of water and to polymerize the extended portion 20 of the water-permeable sheet 2 on the water-permeable sheet 2 of the adjacent planar drainage material 1 to the internal space. The surface drainage material 1 can be continuously disposed on the back surface of the retaining wall 4 while preventing inflow of earth and sand.
The total drainage amount and capacity of all the planar drainage materials 1 arranged on the back surface of the retaining wall 4 show the same numerical values as the maximum drainage amount and total capacity of the individual planar drainage materials 1, and the highest Safety is obtained and it can be used for a long time.

In addition to the above-described effects, the work efficiency is greatly improved by arranging the long planar drainage material 1 so that the long side is horizontal or vertical.
Further, by providing the through hole 30 at the bottom of the concave portion 31 and / or the top of the convex portion 32 of the synthetic resin planar member 3, detouring between the inner and rear surfaces of the synthetic resin planar member 3 is reduced. Therefore, the decreasing amount of detour water immediately flows downward.
Further, by forming the synthetic resin planar member 3 with a polyolefin-based resin as a main component, necessary strength and flexibility can be maintained for a long time without being corroded, and the problem of environmental pollution can be avoided. be able to.
Moreover, by providing the water-permeable sheet 2 with a woven fabric or a non-woven fabric, the required water permeability level and strength can be easily selected according to these grades, and further, by forming with a synthetic resin fiber, there is no corrosion. Necessary strength and flexibility can be maintained over a long period of time.

  As mentioned above, although the arrangement | positioning structure of the planar drainage material of this invention was demonstrated based on the Example, this invention is not limited to the structure described in the said Example, For example, of planar drainage material The configuration of the extended portion 20 on the back surface can be appropriately changed within a range not departing from the gist, such as being symmetrical in the vertical direction.

  The arrangement structure of the planar drainage material according to the present invention can be suitably used not only in mountainous areas and urban areas but also in all areas on planes, slopes, vertical surfaces and the like where underground drainage is desired.

It is a longitudinal cross-sectional view which shows 1st Example of the arrangement | positioning structure of the planar drainage material of this invention. The planar drainage material used by the Example is shown, (a) is the perspective view which notched a part, (b) is the top view which notched a part, (c) is sectional drawing. The planar drainage material used in the embodiment is shown, (a) is a sectional view in the width direction, (b) is a sectional view in the width direction of another example, and (c) is the length of (a) or (b). FIG. The modification of 1st Example of the arrangement | positioning structure of the planar drainage material of this invention is shown, (a) is a longitudinal cross-sectional view, (b) is the planar drainage material used in the Example. The 2nd Example of the arrangement | positioning structure of the planar drainage material of this invention is shown, (a) is a front view, (b) is a cross-sectional view, (c) is a longitudinal cross-sectional view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Planar drainage material 10 Opening part 2 Permeable sheet 20 Extension part 3 Synthetic resin planar member 30 Through-hole 31 Concave part of synthetic resin planar member 32 Convex part of synthetic resin planar member 4 Retaining wall

Claims (7)

  In the arrangement structure of a planar drainage material in which a plurality of planar drainage materials are continuously arranged along the retaining wall, a long strip-like synthetic resin planar member having continuous voids by forming irregularities on the surface And a water-permeable sheet that covers the surface member made of synthetic resin, and an opening is provided on the long side of the water-permeable sheet, and the water-permeable sheet is disposed outside from at least one of the front side and the back side of the opening. Using the planar drainage material extended to the surface, the openings of the water permeable sheets are butted together so that the planar drainage materials are juxtaposed, and the extended portion of the water permeable sheet is polymerized on the water permeable sheet of the adjacent planar drainage material An arrangement structure of a planar drainage material characterized by that.   The arrangement structure of the planar drainage material according to claim 1, wherein the planar drainage material is arranged such that the long side is horizontal.   2. The planar drainage material disposing structure according to claim 1, wherein the planar drainage material is disposed such that a long side is vertical.   4. The planar drainage material disposing structure according to claim 1, 2, or 3, wherein a through hole is provided in the bottom of the concave portion and / or the top of the convex portion of the synthetic resin planar member.   The surface drainage material disposing structure according to claim 1, 2, 3, or 4, wherein the surface member made of a synthetic resin is formed with a polyolefin resin as a main component.   The arrangement structure of the planar drainage material according to claim 1, 2, 3, 4, or 5, wherein the water-permeable sheet is formed of a woven fabric or a non-woven fabric.   The arrangement structure of the planar drainage material according to claim 6, wherein the woven or non-woven fabric of the water permeable sheet is formed of synthetic resin fibers.

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