JP2556130Y2 - Construction structure of backfill drainage material - Google Patents
Construction structure of backfill drainage materialInfo
- Publication number
- JP2556130Y2 JP2556130Y2 JP10588491U JP10588491U JP2556130Y2 JP 2556130 Y2 JP2556130 Y2 JP 2556130Y2 JP 10588491 U JP10588491 U JP 10588491U JP 10588491 U JP10588491 U JP 10588491U JP 2556130 Y2 JP2556130 Y2 JP 2556130Y2
- Authority
- JP
- Japan
- Prior art keywords
- retaining wall
- drainage material
- drainage
- back surface
- backfill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Retaining Walls (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、盛土やトンネルなどの
擁壁に沿って埋設される裏込め用排水材を定位置に保持
するための裏込め用排水材の施工構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backfill drainage construction structure for holding backfill drainage buried along a retaining wall such as an embankment or a tunnel in a fixed position.
【０００２】[0002]
【従来の技術】適所に水抜き孔を有する擁壁の裏面に縦
横に並べた面状の排水材を重ね合わせると共に、擁壁の
裏面側に盛土をして排水材を埋設するという工法は知ら
れている。この工法で施工された宅地用造成地や道路、
堤防、トンネルなどの構築物において、排水材は、盛土
中の水分を擁壁の裏面に導いた後、水抜き孔に排出する
という働きをする。2. Description of the Related Art It is known that a drainage material arranged vertically and horizontally is overlapped on the back surface of a retaining wall having a drain hole in an appropriate place, and the drainage material is buried by embankment on the back side of the retaining wall. Have been. Residential land development and roads constructed using this method,
In structures such as embankments and tunnels, the drainage material serves to guide the water in the embankment to the backside of the retaining wall and then drain it to the drain hole.
【０００３】上記工法において、擁壁は通常コンクリー
ト壁で形成され、従来は、排水材がそのような擁壁に釘
打ちやねじ止めすることにより固定されていた。しか
し、コンクリート壁である擁壁に釘打ちやねじ締めを行
うとひび割れを生じやすく、ひび割れを生じた場合に
は、そこから漏水を生じたり崩壊を生じたりするおそれ
がある。In the above method, the retaining wall is usually formed of a concrete wall, and conventionally, a drainage material is fixed to such a retaining wall by nailing or screwing. However, when nailing or screwing is performed on the retaining wall, which is a concrete wall, cracks are likely to occur, and when cracks occur, water leakage or collapse may occur from the cracks.
【０００４】[0004]
【考案が解決しようとする課題】そこで、両面粘着テー
プで擁壁の裏面に排水材を接合するという方法を採用す
ることがあった。しかし、強風時や降雨時には両面粘着
テープが排水材や擁壁の裏面にうまく付着しなかった
り、付着したとしてもその後に剥がれたりするといった
事態を多々生じることがあった。Therefore, a method of joining a drainage material to the back surface of the retaining wall with a double-sided adhesive tape has sometimes been adopted. However, the double-sided pressure-sensitive adhesive tape often did not adhere well to the drainage material or the back surface of the retaining wall during strong winds or rainfall, and even if it did adhere, it often peeled off.
【０００５】また、擁壁の裏面は垂直に立ち上げられて
いるとは限らず、擁壁の裏面が傾いて水平線に対して鋭
角になるように立ち上がっているような擁壁もある。[0005] The rear surface of the retaining wall is not always vertically raised, and there is a retaining wall in which the rear surface of the retaining wall is inclined and rises at an acute angle with respect to a horizontal line.
【０００６】本考案は以上の事情に鑑みてなされたもの
で、擁壁の裏面に排水材を確実に固定することができ、
しかも擁壁にひび割れを生じさせるおそれがなく、さら
に、裏面が水平線に対して鋭角になるように立ち上がっ
ているような擁壁に対しても確実に裏込め用排水材をそ
の擁壁の裏面に重ね合わせることの可能な裏込め用排水
材の施工構造を提供することを目的とする。[0006] The present invention has been made in view of the above circumstances, it is possible to reliably fix the drainage material on the back of the retaining wall,
In addition, there is no danger of cracking of the retaining wall, and the drainage material for backfilling is surely applied to the back surface of the retaining wall whose back surface rises at an acute angle to the horizontal line. An object of the present invention is to provide a construction structure of a backfill drainage material that can be overlapped.
【０００７】[0007]
【考案が解決しようとする課題】本考案による裏込め用
排水材の施工構造は、擁壁に具備されている水抜き孔に
保持された支持体相互にワイヤーなどの張線が張設さ
れ、擁壁の裏面側に並べられた複数の裏込め用排水材が
上記張線と擁壁との間で挾まれているものである。According to the construction of the backfill drainage material according to the present invention, a wire or the like is stretched between supports held in a drain hole provided in a retaining wall. A plurality of backfill drainage materials arranged on the back side of the retaining wall are sandwiched between the tension line and the retaining wall.
【０００８】[0008]
【作用】この構成であると、擁壁に釘打ちやねじ締めを
行わずに張線が張設される。また、擁壁の裏面が水平線
に対して鋭角に傾斜していても排水材が擁壁の裏面と張
線との間に挾まれて保持される。According to this structure, the cable is stretched on the retaining wall without nailing or screwing. Further, even if the back surface of the retaining wall is inclined at an acute angle with respect to the horizontal line, the drainage material is held between the back surface of the retaining wall and the tension line.
【０００９】[0009]
【実施例】図１に本考案の実施例による裏込め用排水材
の施工構造を示している。面状の排水材２は擁壁１の裏
面１１に重ね合わされている。また、擁壁１の複数箇所
に形成されている水抜き孔Ｈ…のうち所定のものには、
支持体３が保持され、この支持体３の端部が擁壁１の裏
面１１側に突出している。そして、支持体３…の相互に
張設された張線４と上記擁壁１の裏面１１との間で排水
材２が挾まれている。擁壁１における裏面１１の下端部
に有孔排水管５が配設されている。1 shows the construction of a drainage material for backfill according to an embodiment of the present invention. The planar drainage material 2 is overlaid on the back surface 11 of the retaining wall 1. In addition, predetermined ones of the drainage holes H formed at a plurality of locations of the retaining wall 1 include:
The support 3 is held, and an end of the support 3 protrudes toward the back surface 11 of the retaining wall 1. The drainage material 2 is sandwiched between the extending wires 4 of the supports 3 and the back surface 11 of the retaining wall 1. At the lower end of the back surface 11 of the retaining wall 1, a perforated drain pipe 5 is provided.
【００１０】図２に水抜き孔Ｈに保持された支持体３を
示している。この支持体３は、軸体３１と、軸体３１に
軸方向摺動自在にかつ回転自在に嵌合された外筒３２
と、一端が軸体３１に軸支され他端が外筒３２に軸支さ
れた複数の中折れリンク３３…と、外筒３２の端部に固
着されたナット体３４と、このナット体３４のねじ孔に
螺合し上記軸体３１に形成されたねじ部３５と、軸体３
１の端部に設けられた掛止部３６とを有する。FIG. 2 shows the support 3 held in the drain hole H. The support 3 is composed of a shaft 31 and an outer cylinder 32 that is slidably and rotatably fitted to the shaft 31 in the axial direction.
A plurality of bent links 33 each having one end pivotally supported by the shaft body 31 and the other end pivotally supported by the outer cylinder 32; a nut body 34 fixed to an end of the outer cylinder 32; A screw portion 35 screwed into the screw hole of the shaft body 31 and formed on the shaft body 31;
And a hook 36 provided at one end.
【００１１】この構成の支持体３において、軸体３１を
正回転させることによりそのねじ部３５をナット体３４
のねじ孔に対して前進（矢符Ｘ）させると、複数の中折
れリンク３３…が伸長してそれらの屈伸部３３ａ…が軸
体３１に近づき、軸体３１を逆回転させることによりそ
のねじ部３５をナット体３４のねじ孔に対して後退（矢
符Ｙ）させると、複数の中折れリンク３３…が屈曲して
外側に張り出し、屈伸部３３ａが軸体３１から遠ざか
る。したがって、屈伸部３３ａ…を軸体３１に近づけた
状態で中折れリンク３３…を水抜き孔Ｈに挿入し、その
後に、軸体３１を逆回転させて屈伸部３３ａ…を軸体３
１から遠ざけると、屈伸部３３ａ…が水抜き孔Ｈの内面
に強く当接して支持体３が水抜き孔Ｈに保持される。な
お、支持体３の構成は図例に限定されない。In the support 3 having this configuration, by rotating the shaft body 31 forward, the screw portion 35 is connected to the nut body 34.
Are advanced (arrows X) with respect to the screw holes of a plurality of the center bending links 33... Extend and their bending and extending portions 33 a approach the shaft body 31, and by rotating the shaft body 31 in the reverse direction, When the portion 35 is retracted (arrow Y) with respect to the screw hole of the nut body 34, the plurality of center bending links 33 bend and project outward, and the bending / extending portion 33a moves away from the shaft body 31. Therefore, the bending links 33 are inserted into the drain holes H with the bending portions 33a approaching the shaft 31, and then the shaft 31 is rotated in the reverse direction so that the bending portions 33a
When it is moved away from 1, the bent portions 33a strongly contact the inner surface of the drainage hole H, and the support 3 is held in the drainage hole H. The configuration of the support 3 is not limited to the illustrated example.
【００１２】上記張線４に金属製などのワイヤーやポリ
プロピレン製の延伸バンドを用いると、これらが大きな
引張強度を有するために、排水材２を確実に擁壁１の裏
面に押し付けて重ね合わせた状態に保持することができ
る。If a wire made of metal or the like or a drawn band made of polypropylene is used for the tension wire 4, since these have a large tensile strength, the drainage material 2 is surely pressed against the back surface of the retaining wall 1 and overlapped. Can be kept in a state.
【００１３】ところで、擁壁１の裏面１１は垂直である
とは限らず、場合によっては図１のように鉛直線Ｃに対
して角度θだけ傾斜し、水平線に対して鋭角に立ち上が
っていることもある。このような場合でも、排水材２が
擁壁１の裏面１１と張線４とで挾まれることにより、排
水材２は擁壁１の裏面１１に確実に接触する。By the way, the back surface 11 of the retaining wall 1 is not always vertical, but may be inclined at an angle θ with respect to a vertical line C and rise up at an acute angle with respect to a horizontal line as shown in FIG. There is also. Even in such a case, since the drainage material 2 is sandwiched between the back surface 11 of the retaining wall 1 and the tension wire 4, the drainage material 2 reliably contacts the rear surface 11 of the retaining wall 1.
【００１４】排水材２…を粘着テープで擁壁１の裏面１
１に貼り付けるという方法を、上述した方法と併用して
もよく、そのようにすることによって排水材２…がいっ
そう確実に擁壁１の裏面１１に重ね合わされる。The drainage materials 2 are attached to the back surface 1 of the retaining wall 1 with an adhesive tape.
1 may be used in combination with the above-described method, whereby the drainage materials 2... Are more reliably overlapped on the back surface 11 of the retaining wall 1.
【００１５】擁壁１の裏面側には、排水材２…の施工後
に盛土が施される。こうして施工された盛土中の水分
は、排水材２…の内部の空隙を“水みち”として円滑に
流れ、一部の水が擁壁１に形成された水抜き孔Ｈを経て
法面に流出し、残りの水が下側の有孔排水管５を経て排
出される。The embankment is applied to the back side of the retaining wall 1 after the drainage materials 2 are constructed. The water in the embankment constructed in this manner smoothly flows through the voids in the drainage material 2 as “water channels”, and a part of the water flows out to the slope through the drain holes H formed in the retaining wall 1. Then, the remaining water is discharged through the perforated drain pipe 5 on the lower side.
【００１６】図４に面状の排水材２の一例を示してあ
る。このものは、高密度ポリエチレン樹脂を加圧成形す
ることにより製作された面状の立体構造体２１とその立
体構造体２１に接着剤で貼り付けられた透水シート２３
とからなる。立体構造体２１はその両面側に突出する格
子配列の多数の突起２２を備えており、それらの突起２
２の相互間の空隙が“水みち”として役立つ。そして、
多数の突起２２を備えた高密度ポリエチレン樹脂板をポ
リプロピレン樹脂でなる不織布で作った透水シート２３
で包囲したものである。透水シート２３による被覆は、
立体構造体２１の前面とその周囲の４つの端面だけであ
っても、あるいは立体構造体２１の前面とその周囲の４
つの端面と背面の一部であってもよい。FIG. 4 shows an example of a planar drainage material 2. This is a planar three-dimensional structure 21 produced by press-molding a high-density polyethylene resin, and a water-permeable sheet 23 attached to the three-dimensional structure 21 with an adhesive.
Consists of The three-dimensional structure 21 has a large number of protrusions 22 in a lattice arrangement protruding on both sides thereof.
The gap between the two serves as a "water path". And
A water-permeable sheet 23 made of a high-density polyethylene resin plate provided with a large number of projections 22 with a nonwoven fabric made of polypropylene resin
It is surrounded by. The covering with the water-permeable sheet 23
Even if only the front surface of the three-dimensional structure 21 and the four end faces around it, or the front surface of the three-dimensional structure 21 and the four
One end face and a part of the back face may be used.
【００１７】[0017]
【考案の効果】この考案によれば、擁壁にひび割れを生
じてそこから漏水したり崩壊したりする心配がなくなる
のみならず、擁壁の裏面が水平線に対して鋭角に傾斜し
ていても排水材を擁壁の裏面に確実に重ね合わせて保持
させることができるという効果がある。[Effect of the Invention] According to the invention, not only is there no concern that the retaining wall will crack and leak or collapse from the crack, and even if the back surface of the retaining wall is inclined at an acute angle to the horizontal line. There is an effect that the drainage material can be reliably overlapped and held on the back surface of the retaining wall.
【図１】本考案の実施例による裏込め用排水材の施工構
造を示す概略斜視図である。FIG. 1 is a schematic perspective view showing a construction structure of a backfill drainage material according to an embodiment of the present invention.
【図２】図１の要部の断面図である。FIG. 2 is a sectional view of a main part of FIG.
【図３】排水材の概略斜視図である。FIG. 3 is a schematic perspective view of a drainage material.
１ 擁壁 ２ 排水材 ３ 支持体 ４ 張線 １１ 擁壁の裏面 Ｈ 水抜き孔 DESCRIPTION OF SYMBOLS 1 Retaining wall 2 Drainage material 3 Support 4 Tension line 11 Backside of retaining wall H Drainage hole
Claims (1)
れた支持体相互にワイヤーなどの張線が張設され、擁壁
の裏面側に並べられた複数の裏込め用排水材が上記張線
と擁壁との間で挟まれていることを特徴とする裏込め用
排水材の施工構造。1. A plurality of drainage materials for backfill arranged on the back surface side of the retaining wall, wherein the supporting members held in the drainage holes provided in the retaining wall are stretched with each other by wires or the like. A construction structure for drainage material for backfill, wherein the construction material is sandwiched between the cable and the retaining wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10588491U JP2556130Y2 (en) | 1991-11-27 | 1991-11-27 | Construction structure of backfill drainage material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10588491U JP2556130Y2 (en) | 1991-11-27 | 1991-11-27 | Construction structure of backfill drainage material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH072545U JPH072545U (en) | 1995-01-13 |
| JP2556130Y2 true JP2556130Y2 (en) | 1997-12-03 |
Family
ID=14419362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10588491U Expired - Fee Related JP2556130Y2 (en) | 1991-11-27 | 1991-11-27 | Construction structure of backfill drainage material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2556130Y2 (en) |
-
1991
- 1991-11-27 JP JP10588491U patent/JP2556130Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH072545U (en) | 1995-01-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |