JPH09273141A - Driving work of natural fiber drain material and device therefor - Google Patents
Driving work of natural fiber drain material and device thereforInfo
- Publication number
- JPH09273141A JPH09273141A JP8529296A JP8529296A JPH09273141A JP H09273141 A JPH09273141 A JP H09273141A JP 8529296 A JP8529296 A JP 8529296A JP 8529296 A JP8529296 A JP 8529296A JP H09273141 A JPH09273141 A JP H09273141A
- Authority
- JP
- Japan
- Prior art keywords
- drain material
- natural fiber
- placing
- drain
- roller
- 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.)
- Granted
Links
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、天然繊維ドレーン
材（ファイバードレーン）の打設工法および装置に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for placing a natural fiber drain material (fiber drain).
【０００２】[0002]
【従来の技術】古くから軟弱地盤改良工法の一つとして
地盤に後に構築する構造物に見合う重量を載荷する圧密
工法が知られており、その圧密や排水を促進するために
ドレーン材を打設するバーチカルドレーン工法がある。2. Description of the Related Art As one of the methods for improving soft ground, a consolidation method has been known for a long time to load a weight corresponding to the structure to be constructed later on the ground, and a drain material is placed to accelerate the consolidation and drainage. There is a vertical drain construction method.
【０００３】バーチカルドレーン工法に使用されるバー
チカルドレーン材としては、砂を使用するサンドドレー
ン、パックドレーンと、石油化学製品であるプラスチッ
クボード系材料を使用するプラスチックドレーンがあ
る。プラスチックドレーンは長手方向に沿った多数の溝
を持つ汎用合成樹脂の帯状物を芯材とし、その両表面に
不織布などの透水膜を貼付けたドレーン材である。As the vertical drain material used in the vertical drain method, there are a sand drain using sand and a packed drain, and a plastic drain using a plastic board material which is a petrochemical product. The plastic drain is a drain material in which a belt-shaped material of general-purpose synthetic resin having a large number of grooves along the longitudinal direction is used as a core material, and a water-permeable membrane such as a nonwoven fabric is attached to both surfaces of the core material.
【０００４】[0004]
【発明が解決しようとする課題】近年、良質の砂が入手
困難になってきていることや砂採取による環境破壊が問
題視されていることから、サンドドレーン、パックドレ
ーンの使用に難がある。In recent years, it has been difficult to use sand drains and packed drains because it has become difficult to obtain good quality sand and environmental damage caused by sand extraction has become a problem.
【０００５】これに対してプラスチックドレーンの使用
は、大きな沈下（ひずみ）が生じる地盤では、このドレ
ーン材が比較的固いことから座屈、破断し、圧密遅れが
生じる場合がある。さらに、プラスチックドレーンは半
永久的に地中に残存するために後の工事の支障となる。On the other hand, the use of the plastic drain may cause buckling and breakage in the ground where a large settlement (strain) occurs, and the consolidation delay may occur because the drain material is relatively hard. In addition, the plastic drain remains in the ground semipermanently, which hinders the subsequent construction.
【０００６】現在プラスチックボード系材料は約2,200
万ｍ／年間が使用されており、原油換算で約8,000 kl相
当のエネルギー消費量となっている。Currently, there are about 2,200 plastic board materials.
10,000 m / year is used, and the energy consumption is equivalent to about 8,000 kl in crude oil equivalent.
【０００７】また、このプラスチックドレーンは図９〜
図12に示すようにリール２にセットされ、フリクション
ホイール３によりケーシング４とともに打設機１で打設
される。リール２から引き出されるドレーン材５はケー
シング４の上方を通って下端に導かれ、先端にアンカー
６を取り付ける。This plastic drain is shown in FIG.
As shown in FIG. 12, it is set on the reel 2 and driven by the friction wheel 3 together with the casing 4 by the driving machine 1. The drain material 5 drawn out from the reel 2 is guided to the lower end through the upper part of the casing 4, and the anchor 6 is attached to the tip.
【０００８】図11に示すように所定の深度まで到達した
ら、ケーシング４のみ引抜く。ドレーン材５はアンカー
６により共上がりが発生しない。図12に示すようにケー
シング４が地上まで引抜かれたらドレーン材５を切断
し、次の打設点へ移動する。When reaching a predetermined depth as shown in FIG. 11, only the casing 4 is pulled out. The anchor 6 prevents the drain member 5 from rising together. As shown in FIG. 12, when the casing 4 is pulled out to the ground, the drain material 5 is cut and moved to the next setting point.
【０００９】このようにドレーン材５をリール２に巻い
てセットするのは、プラスチックボード系材料は折り目
をつけると脆弱部が生じるのでそれを防止するためであ
るが、リール２の径に応じてその収容長さには自ずから
限度があり、せいぜい200 ｍ程度である。その結果、ド
レーン材５のセット作業が頻繁に必要であり、手数がか
かるとともにその都度打設作業を中断しなければならな
い。The reason why the drain material 5 is wound and set on the reel 2 in this way is to prevent the plastic board material from forming a fragile portion when a crease is made, so that it is prevented depending on the diameter of the reel 2. There is a natural limit to the length of accommodation, which is at most 200 m. As a result, the drain material 5 needs to be set frequently, which is troublesome and the placing work must be interrupted each time.
【００１０】本発明の目的は前記の従来例の不都合を解
消し、通水能力、引張強度、地盤沈下に対する追随性、
圧密排水特性に優れるとともに、材料の有機質土化が可
能な天然繊維ドレーン材を使用することを前提に、この
ドレーン材を長い状態でセットして、しかも絡み付きな
どの障害なしに効率良く打設でき、施工の合理化を図る
ことができる天然繊維ドレーン材の打設工法および装置
を提供することにある。The object of the present invention is to solve the above-mentioned disadvantages of the prior art, to improve water permeability, tensile strength, and ability to follow ground subsidence.
This drain material can be set in a long state, and it can be efficiently placed without any obstacles such as entanglement, assuming that it uses a natural fiber drain material that has excellent consolidation drainage characteristics and can be converted to organic soil. The purpose of the present invention is to provide a method and a device for placing a natural fiber drain material that can streamline the construction.
【００１１】[0011]
【課題を解決するための手段】本発明は前記目的を達成
するため、天然繊維ドレーン材の打設工法としては、交
互に折り返した状態に畳んだ天然繊維ドレーン材をカゴ
に収めて設置し、このカゴから連続的に引き出すドレー
ン材を打設機に設けたねじれ戻し器およびそり戻し器を
通してから地盤に打設すること、および、ねじれ戻し器
とそり戻し器とは間隔を存して設け、その間をドレーン
材が架け渡りながら移動することを要旨とするものであ
る。In order to achieve the above-mentioned object, the present invention provides a method for placing a natural fiber drain material, in which a natural fiber drain material folded in an alternating folded state is housed in a basket and installed. Placing the drain material, which is continuously drawn from this basket, through the twist-back device and the reversing device provided in the driving machine, and then placing it on the ground, and the rewinding device and the reversing device are provided with a gap, The point is that the drain material moves while bridging between them.
【００１２】天然繊維ドレーン材の打設装置としては、
第１に、ドレーン材が間を通る間隔を存してローラを同
レベルで平行に設けた第１のローラ対と、ドレーン材が
縫うように間を挿通するローラを上下段に設けた第２の
ローラ対を相互い直交する向きに設けた枠体を前後・左
右方向に振れるように吊支したねじれ戻し器と、ドレー
ン材が間を通る空間を入り口部から出口部に向かって漸
次平坦にかつ偏平に形成する通し体からなるそり戻し器
とを打設機に設けたこと、第２に、ねじれ戻し器とそり
戻し器とを間隔を存して打設機に設けること、第３に、
ねじれ戻し器は、第１のローラ対のドレーン材差し入れ
側でこの第１のローラ対のローラ端にこれと直交する向
きにガイドローラを設けることを要旨とするものであ
る。As a device for placing a natural fiber drain material,
First, the first pair of rollers in which the drain members are provided in parallel at the same level with a gap passing through the drain members, and the second pair of rollers in which the drain members are sewn between the upper and lower stages are provided. A pair of rollers are installed in a direction that is orthogonal to each other and the frame is suspended and supported so that it can swing back and forth and left and right, and the space through which the drain material passes is made flat gradually from the inlet to the outlet. And a warping device made of a flat body formed in the flattening device, and secondly, the twisting device and the warping device are provided in the driving device at intervals. ,
The gist of the untwisting device is that a guide roller is provided on the drain material insertion side of the first roller pair at the roller end of the first roller pair in a direction orthogonal to the guide roller.
【００１３】本発明によれば、ドレーン材としては植物
繊維（黄麻繊維およびココヤシ皮繊維）で構成した天然
繊維ドレーン材を用いるので、材料の引張り強度は十分
あり、また、たわみ性があるので打設時に切れたり折れ
たりすることがなく、品質の高い材料である。According to the present invention, since a natural fiber drain material composed of vegetable fibers (burlap fiber and coconut skin fiber) is used as the drain material, the material has sufficient tensile strength and is flexible. It is a high quality material that does not break or break during installation.
【００１４】さらに、沈下量の大きい大変形時において
も、ドレーン材が地盤の変形に追随するために座屈する
ことがないので圧密を促進する材料であり、材料は１年
生の黄麻と東南アジアでは廃棄物である椰子の実の外皮
繊維であり、森林破壊とは無縁かつ供給は無尽蔵である
ので環境に優しい材料である。Further, even in the case of large deformation with a large amount of subsidence, the drain material does not buckle because it follows the deformation of the ground, so it is a material that promotes consolidation, and the material is discarded in first grade jute and Southeast Asia. It is a coconut fiber of coconut, which is a product, and is an environmentally friendly material because it is unrelated to deforestation and the supply is inexhaustible.
【００１５】そして、天然繊維であるからドレーン材と
しての機能を果たした後は地中のバクテリアによって生
分解され土に戻る材料である。Since it is a natural fiber, it functions as a drain material and is then biodegraded by underground bacteria to return to soil.
【００１６】請求項１記載の本発明によれば、この天然
繊維ドレーン材の優れた点に着目し、施工に際してはプ
ラスチックドレーン工法で通常用いられるドレーン打設
機が使用できることを可能とする他、交互に折り返した
状態に畳んだ輸入梱包詰めのままの状態でカゴに収めて
設置し、長い（1000〜3000ｍ）ドレーン材を打設機へ連
続して迅速な供給を自動的に行うことができる。According to the present invention as set forth in claim 1, paying attention to the excellent point of the natural fiber drain material, it is possible to use the drain driving machine normally used in the plastic drain construction method at the time of construction. It can be installed in a basket as it is packed in imported packaging that is folded back in an alternating manner, and long (1000 to 3000 m) drain material can be continuously and quickly supplied to the machine. .
【００１７】特に、交互に折り返した状態に畳んだ状態
からの引出しを行うとドレーン材に折り目がついてお
り、ねじれやそりが生じ、このままでは打設機への絡み
や引っ掛かりが生じるおそれがあるが、ねじれ戻し器お
よびそり戻し器を通してから地盤に打設するので、折り
目を無くし、ねじれやそりが矯正されたドレーン材を供
給することができ、前記不都合は無くなる。In particular, if the drain member is folded in an alternately folded state, the drain member has a crease, and twisting or warping may occur, which may cause entanglement or catching on the driving machine. Since it is placed on the ground after passing through the twist return device and the warp return device, it is possible to supply the drain material in which the folds are eliminated and the twist and warp are corrected, and the above inconvenience is eliminated.
【００１８】請求項２および請求項４記載の本発明によ
れば、前記作用に加えて、ねじれ戻し器とそり戻し器と
は間隔を存して設け、その間をドレーン材が架け渡りな
がら移動することによりこの間でもねじれが矯正され、
より完璧なものとなる。According to the present invention as set forth in claims 2 and 4, in addition to the above-mentioned action, the twist rewinding device and the reversing device are provided with a space therebetween, and the drain member moves while bridging between them. By this, the twist is corrected even during this period,
It will be more perfect.
【００１９】請求項３記載の本発明によれば、ドレーン
材はねじれ戻し器の狭い間隔の第１のローラ対を通ると
きにねじれやそりを矯正され、さらに第１のローラ対と
第２のローラ対を相互い直交する向きに設けたのでここ
でもねじれが一定方向に強制的に矯正され、また、第２
のローラ対をドレーン材が縫うように間を挿通すること
でさらにねじれがやそりが矯正される。According to the third aspect of the present invention, the drain material is corrected for twist and warp when passing through the first pair of closely spaced rollers of the untwister, and further the first pair of rollers and the second pair of rollers. Since the pair of rollers are provided in directions orthogonal to each other, the twist is forcibly corrected in a certain direction here as well.
By twisting the pair of rollers so that the drain material is sewn, the twist and the warp are further corrected.
【００２０】しかも、このねじれ戻し器は前後・左右に
自由に首を振るので、カゴに収めたドレーン材が交互に
折り返した状態に畳んだ状態から引き出されのに、その
引き出し位置が順次に移動し、折り返すようになっても
それに追随してねじれ戻し器が動き、常に弛みなく、極
力近い位置でねじれ戻し器に送り込まれるようになるの
で、からみ、ねじれをドレーン材に生じにくくすること
ができる。Moreover, since the untwisting device can freely swing its head back and forth and left and right, the drain material stored in the basket is pulled out from the folded state in which the drain material is alternately folded back, but the pulling position is sequentially moved. However, even if it comes to fold back, the twisting device moves following it, and it is always slack and is fed into the twisting device at a position as close as possible, so it is possible to prevent entanglement and twisting in the drain material. .
【００２１】また、そり戻し器はドレーン材が間を通る
空間を入り口部から出口部に向かって漸次平坦にかつ偏
平に形成する通し体からなるので、ここを通過させるだ
けでドレーン材のそりを矯正し、平らなものとすること
ができる。Further, the warping device is composed of a through body which forms a space through which the drain material passes through gradually and flatly from the entrance portion to the exit portion. It can be straightened and made flat.
【００２２】請求項５記載の本発明によれば、ねじれ戻
し器はドレーン材差し入れ側にガイドローラを設けるこ
とにより、第１のローラ対に導入するドレーン材がむり
な方向からの場合はこのガイドローラでガイドでき、さ
らにガイドローラは第１のローラ対と直交する向きであ
るので、ドレーン材が第１のローラ対の向きと異なって
いてもガイドローラに端部が当接して誘導される。According to the fifth aspect of the present invention, the untwisting device is provided with a guide roller on the drain material insertion side, so that when the drain material introduced into the first roller pair is in a muddy direction, the guide roller is provided. Since the guide rollers can be guided by the rollers and the guide rollers are oriented in the direction orthogonal to the first roller pair, even if the drain material is different from the orientation of the first roller pair, the end portions of the guide rollers contact and are guided.
【００２３】[0023]
【発明の実施の形態】以下、図面について本発明の実施
の形態を詳細に説明する。図１は本発明の天然繊維ドレ
ーン材の打設工法の１実施形態を示す説明図、図２は本
発明装置の全体の説明図である。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory view showing an embodiment of a method for placing a natural fiber drain material according to the present invention, and FIG. 2 is an overall explanatory view of an apparatus according to the present invention.
【００２４】先にドレーン材５について説明すると、図
13に示すように３つの連続した縦の縫目７で合わせた四
つのコア８の紐に巻き付けたジュート麻布の外層９ａ、
内層９ｂの二つの層からなり、幅80〜100mm 、厚さ５〜
10mmである。コア８はココナッツ繊維を素材とする。First, the drain material 5 will be described.
Outer layer 9a of jute linen wrapped around a string of four cores 8 joined by three continuous vertical seams 7 as shown in 13,
It consists of two layers, inner layer 9b, width 80 ~ 100mm, thickness 5 ~.
10 mm. The core 8 is made of coconut fiber.
【００２５】本発明装置は、打設機１に設けるねじれ戻
し器10とそり戻し器11とからなる。先にねじれ戻し器10
について説明すると、図２〜図５に示すように、枠体12
の下部にドレーン材５が間を通る間隔を存してローラ13
ａ，13ｂを同レベルで平行に設けた第１のローラ対13を
設ける。The apparatus of the present invention comprises a twist rewinder 10 and a warp rewinder 11 provided in the driving machine 1. First twister 10
2 to 5, the frame body 12 will be described.
There is a gap between the drain material 5 at the bottom of the roller 13
A first roller pair 13 in which a and 13b are provided in parallel at the same level is provided.
【００２６】さらに、枠体12の中部と上部にドレーン材
が縫うように間を挿通するローラ14ａ，14ｂを鉛直に並
ぶように上下段に設けた第２のローラ対14を設け、前記
第１のローラ対13とこの第２のローラ対14とは第１のロ
ーラ対13のローラ13ａ，13ｂが枠体12の厚さ方向に設
け、第２のローラ対14のローラ14ａ，14ｂは枠体12の幅
方向に設けることで、相互い直交する向きに設けた。Further, a second roller pair 14 is provided in the middle and upper portions of the frame 12 so that the rollers 14a and 14b, through which the drain material is sewn, are arranged vertically so as to be vertically arranged. The roller pair 13 and the second roller pair 14 are the rollers 13a and 13b of the first roller pair 13 provided in the thickness direction of the frame body 12, and the rollers 14a and 14b of the second roller pair 14 are the frame body. By providing 12 width directions, they were provided in directions orthogonal to each other.
【００２７】前記枠体12の下方の第１のローラ対13のド
レーン材差し入れ側で、この第１のローラ対13のローラ
13ａ，13ｂの端に位置するように、かつこれらローラ13
ａ，13ｂを直交する向きにガイドローラ15ａ，15ｂを設
けた。このガイドローラ15ａ，15ｂの相互間隔はローラ
13ａ，13ｂの幅に近いものであり、ドレーン材の幅より
大きい。At the drain material insertion side of the first roller pair 13 below the frame body 12, the rollers of the first roller pair 13 are provided.
The rollers 13a and 13b are located at the ends of the rollers 13a and 13b.
Guide rollers 15a and 15b are provided so that a and 13b are orthogonal to each other. The guide rollers 15a and 15b are separated from each other by a distance.
It is close to the width of 13a and 13b, and is larger than the width of the drain material.
【００２８】そしてねじれ戻し器10は、枠体12の上端を
該枠体12の厚さ方向に回転できるように軸支し、さらに
この軸支するブラケット部16を枠体12の幅方向に回転で
きるように打設機１側の支持体17に軸着した。このよう
にしてねじれ戻し器10は支持体17に対して前後・左右方
向に振れるように吊支される。なお、枠体12の軸支部に
はローラ13ａ，13ｂと同じようなローラを配した。The untwisting device 10 pivotally supports the upper end of the frame body 12 so as to be rotatable in the thickness direction of the frame body 12, and further rotates the bracket portion 16 which supports the frame body 12 in the width direction of the frame body 12. It was attached to the support 17 on the side of the driving machine 1 so that it could be mounted. In this way, the untwisting device 10 is suspended and supported so as to swing in the front-back and left-right directions with respect to the support body 17. In addition, rollers similar to the rollers 13a and 13b are arranged on the pivotal support portion of the frame body 12.
【００２９】そり戻し器11は図６〜図８に示すように、
横置きに設置するもので、側部に開口18を適宜間隔に開
けた横長の箱体19の前後端をドレーン材の入り口20と出
口21として開放し、この箱体19の底からは漸次高さを増
し、かつ、後方端側は相互にハの字形に開くような配列
の縦板22，23を立ち上げた。縦板23，23はその先端が縦
板22,22 間に入り込み、また、後方半分はそれ以上高さ
が高くならない水平としている。As shown in FIGS. 6 to 8, the sled return device 11 is
It is installed horizontally, and the front and rear ends of a horizontally long box body 19 with openings 18 opened at appropriate intervals on the side are opened as inlet 20 and outlet 21 of the drain material, and the height gradually increases from the bottom of this box 19. The vertical plates 22 and 23 are arranged in such a manner that the rear ends of the rear plates open in a V shape. The vertical plates 23, 23 have their tips inserted between the vertical plates 22, 22, and the rear half is horizontal so that the height does not rise any further.
【００３０】そり戻し器11は、このような縦板22，23を
立ち上げることで入り口20と出口21に形成されるドレー
ン材が間を通る挿通空間24を漸次平坦にかつ偏平にに形
成する通し体として構成した。The sledback device 11 forms the insertion space 24 through which the drain material formed at the inlet 20 and the outlet 21 passes by gradually raising the vertical plates 22 and 23 so as to be flat and flat. Configured as a threaded body.
【００３１】さらにこのそり戻し器11の入り口20と出口
21の前後には、上下に間隔を存してガイドローラ25を設
けた。Further, the entrance 20 and the exit of the sled 11
Before and after 21, the guide rollers 25 were provided at intervals in the vertical direction.
【００３２】前記ねじれ戻し器10とそり戻し器11とは打
設機１の左側と右側に設けるなどして（図２参照）一定
の間隔を置くようにした。また、そり戻し器11の近くに
はバックテンション機構を備えたリール２が設けられ
る。The twist rewinding device 10 and the reversing device 11 are provided on the left side and the right side of the driving machine 1 (see FIG. 2) so as to be spaced from each other at a constant interval. Further, a reel 2 having a back tension mechanism is provided near the sled return device 11.
【００３３】次に、前記装置を使用して行う本発明工法
について説明する。前記天然繊維によるドレーン材５は
交互に折り返した状態に畳んで梱包されて輸入される。Next, the method of the present invention performed by using the above apparatus will be described. The drain material 5 made of natural fibers is alternately folded, folded, packed and imported.
【００３４】図１に示すようにドレーン材５はこの交互
に折り返した状態に畳んだ状態のまま金属製の網で製造
したカゴ26に収めて設置する。カゴ26の一つに収納する
ドレーン材５の長さは1,000 ｍ程度であるが、カゴ26を
３つ並べ、3,000 ｍ程度に伸びるドレーン材５としてお
いてもよい。As shown in FIG. 1, the drain member 5 is placed in the basket 26 made of a metal net while being folded in the alternating folded state. The length of the drain material 5 stored in one of the baskets 26 is about 1,000 m, but it is also possible to arrange three baskets 26 so that the drain material 5 extends to about 3,000 m.
【００３５】カゴ26から連続的に引き出すドレーン材５
をねじれ戻し器10にかけるが、ドレーン材５は第１のロ
ーラ対13のローラ13ａ，13ｂ間を通り、その後、第２の
ローラ対14のローラ14ａ，14ｂを間を縫うように挿通し
て、打設機１を横切るように伸びる。Drain material 5 continuously drawn from the basket 26
The drain member 5 passes between the rollers 13a and 13b of the first roller pair 13, and then the rollers 14a and 14b of the second roller pair 14 are sewn between them. , Extends across the placing machine 1.
【００３６】そして、ガイドローラ25間からそり戻し器
11は入り口20に入り、挿通空間24を通り、出口21から出
てガイドローラ25間を通り、リール２に至り、ここに巻
回しないで打設機１の打設部へと導かれる。Then, a warping device is provided between the guide rollers 25.
11 enters the entrance 20, passes through the insertion space 24, exits the exit 21, passes between the guide rollers 25, reaches the reel 2, and is guided to the setting section of the setting machine 1 without being wound here.
【００３７】交互に折り返した状態に畳んだ状態からの
引出してドレーン材５に折り目がついており、また、ね
じれやそりが生じ、このままでは打設機１への絡みや引
っ掛かりが生じるおそれがある。Since the drain member 5 is folded in an alternating folded state and the drain member 5 has a crease, and twisting or warping occurs, there is a risk that entanglement or catching on the driving machine 1 may occur.
【００３８】ドレーン材５はねじれ戻し器10の狭い間隔
の第１のローラ対13を通るときにねじれやそりを矯正さ
れ、さらに第１のローラ対13と第２のローラ対14を相互
い直交する向きに設けたのでここでもねじれが一定方向
に強制的に矯正され、また、第２のローラ対14をドレー
ン材が縫うように間を挿通することでさらにねじれやそ
りが矯正される。The drain member 5 is straightened by twisting and warping when passing through the first roller pair 13 of the untwisting device 10 at a narrow interval, and the first roller pair 13 and the second roller pair 14 are orthogonal to each other. Since it is provided in such a direction, the twist is forcibly corrected in a certain direction also here, and the twist and warp are further corrected by inserting the second roller pair 14 so that the drain material is sewn.
【００３９】しかもこのねじれ戻し器10は前後・左右に
自由に首を振るので、カゴ26に収めたドレーン材５が交
互に折り返した状態に畳んだ状態から引き出されのに、
その引き出し位置が順次に移動し、折り返すように移動
してもそれに追随してねじれ戻し器10が動き、常に弛み
なく、極力近い位置でねじれ戻し器に送り込まれるよう
になるので、からみ、ねじれをドレーン材５に生じにく
くすることができる。Moreover, since the untwisting device 10 freely swings its head back and forth and left and right, the drain member 5 stored in the basket 26 is pulled out from the folded state in which it is folded back alternately.
Even if the pull-out position moves in sequence and moves back and forth, the twist rewinder 10 moves following it, and it always comes into the twist rewinder at a position as close as possible without sagging. It is possible to prevent the drain material 5 from being easily generated.
【００４０】このねじれ戻し器10から出たドレーン材５
は、そり戻し器11に入り、入り口20から出口21に向かう
挿通空間24を通る際にこの挿通空間24が漸次平坦にかつ
偏平になるものなので、そりが矯正され、平らなものと
なる。Drain material 5 coming out of the untwisting device 10
When entering the sled backing device 11 and passing through the insertion space 24 from the entrance 20 to the exit 21, the insertion space 24 gradually becomes flat and flat, so that the warp is corrected and becomes flat.
【００４１】なお、ねじれ戻し器10のドレーン材差し入
れ側に設けたガイドローラ15ａ，15ｂは第１のローラ対
13に導入するドレーン材５がむりな方向からの場合はこ
れでガイドでき、ドレーン材５が第１のローラ対13の向
きと異なっていてもガイドローラ15ａ，15ｂにドレーン
材５の端部が当接してスムーズに誘導できる。The guide rollers 15a and 15b provided on the drain material insertion side of the untwisting device 10 are the first roller pair.
If the drain material 5 to be introduced into the guide member 13 is guided from the unneeded direction, it can be guided, and even if the drain material 5 is different from the direction of the first roller pair 13, the end portions of the drain material 5 are guided to the guide rollers 15a and 15b. Can be brought into contact with and smoothly guided.
【００４２】これに加えて、ねじれ戻し器10とそり戻し
器11とは間隔を存して設け、その間をドレーン材５が架
け渡りながら移動することによりこの間でもねじれが矯
正され（図１参照）、より完璧なものとなる。In addition to this, the twist return device 10 and the warp return device 11 are provided with a space therebetween, and the drain member 5 moves while bridging between them to correct the twist even during this period (see FIG. 1). , Will be more perfect.
【００４３】このように本発明は、ドレーン材５をねじ
れ戻し器10およびそり戻し器11を通してから地盤に打設
するので、折り目を無くし、ねじれやそりが矯正させた
ドレーン材５を常に供給することができる。As described above, according to the present invention, since the drain material 5 is placed on the ground after passing through the twist rewinder 10 and the warp rewinder 11, the drain material 5 in which the folds are eliminated and the twist and the warp are corrected is always supplied. be able to.
【００４４】[0044]
【発明の効果】以上述べたように本発明の天然繊維ドレ
ーン材の打設工法および装置は、通水能力、引張強度、
地盤沈下に対する追随性、圧密排水特性に優れるととも
に、材料の有機質土化が可能なドレーン材を使用するこ
とを前提に、このドレーン材を長い状態でセットして、
しかも絡み付きなどの障害なしに効率良く打設でき、施
工の合理化を図ることができるものである。As described above, the method and apparatus for placing a natural fiber drain material according to the present invention have water permeability, tensile strength,
This drain material is set in a long state on the premise that it uses a drain material that can follow the subsidence of ground and drainage characteristics of compaction drainage and can convert the material into organic soil.
Moreover, it is possible to efficiently place the structure without any obstacle such as entanglement and to rationalize the construction.
【図１】本発明の天然繊維ドレーン材の打設工法の１実
施形態を示す説明図である。FIG. 1 is an explanatory view showing an embodiment of a method for placing a natural fiber drain material according to the present invention.
【図２】本発明の天然繊維ドレーン材の打設装置の全体
の説明図である。FIG. 2 is an explanatory view of an entire natural fiber drain material placing device according to the present invention.
【図３】ねじれ戻し器の側面図である。FIG. 3 is a side view of the untwister.
【図４】ねじれ戻し器の正面図である。FIG. 4 is a front view of the untwisting device.
【図５】ねじれ戻し器の底面図である。FIG. 5 is a bottom view of the untwisting device.
【図６】そり戻し器の側面図である。FIG. 6 is a side view of the warping device.
【図７】そり戻し器の平面図である。FIG. 7 is a plan view of the warping device.
【図８】そり戻し器の正面図である。FIG. 8 is a front view of the warping device.
【図９】ドレーン打設の第１工程を示す側面図である。FIG. 9 is a side view showing a first step of placing a drain.
【図１０】ドレーン打設の第２工程を示す側面図であ
る。FIG. 10 is a side view showing a second step of placing a drain.
【図１１】ドレーン打設の第３工程を示す側面図であ
る。FIG. 11 is a side view showing a third step of placing a drain.
【図１２】ドレーン打設の第４工程を示す側面図であ
る。FIG. 12 is a side view showing a fourth step of placing a drain.
【図１３】天然繊維ドレーン材の断面図である。FIG. 13 is a cross-sectional view of a natural fiber drain material.
１…打設機 ２…リール ３…フリクションホイール ４…ケーシング ５…ドレーン材 ６…アンカー ７…縫い目 ８…コア ９ａ…外層 ９ｂ…内層 10…ねじれ戻し器 11…そり戻し器 12…枠体 13…第１のローラ対 13ａ，13ｂ…ローラ 14…第２のローラ対 14ａ，14ｂ…ローラ 15ａ，15ｂ…ガイドロ
ーラ 16…ブラケット部 17…支持体 18…開口 19…箱体 20…入り口 21…出口 22,23 …縦板 24…挿通空間 25…ガイドローラ 26…カゴDESCRIPTION OF SYMBOLS 1 ... Placing machine 2 ... Reel 3 ... Friction wheel 4 ... Casing 5 ... Drain material 6 ... Anchor 7 ... Seam 8 ... Core 9a ... Outer layer 9b ... Inner layer 10 ... Twist rewinder 11 ... Rewinder 12 ... Frame body 13 ... 1st roller pair 13a, 13b ... Roller 14 ... 2nd roller pair 14a, 14b ... Roller 15a, 15b ... Guide roller 16 ... Bracket part 17 ... Support 18 ... Opening 19 ... Box 20 ... Entrance 21 ... Exit 22 , 23… Vertical plate 24… Insertion space 25… Guide roller 26… Basket
フロントページの続き (72)発明者 村上 禎 兵庫県明石市魚住町西岡1865−１−５− 401 (72)発明者 鬼塚 学 大阪府堺市新金岡３−４−４−305(72) Inventor Sada Murakami 1865-1-5-401 Nishioka, Uozumi-cho, Akashi-shi, Hyogo (72) Inventor Manabu Onizuka 3-4-4-305 Shinkanaoka, Sakai-shi, Osaka
Claims (5)
ドレーン材をカゴに収めて設置し、このカゴから連続的
に引き出すドレーン材を打設機に設けたねじれ戻し器お
よびそり戻し器を通してから地盤に打設することを特徴
とする天然繊維ドレーン材の打設工法。1. A natural fiber drain material folded in an alternating folded state is housed in a basket and installed, and a drain material continuously drawn from the basket is passed through a twisting device and a warping device provided in a driving machine. A method of placing natural fiber drain material, which is characterized by placing it on the ground.
して設け、その間をドレーン材が架け渡りながら移動す
る請求項１記載の天然繊維ドレーン材の打設工法。2. The method for placing a natural fiber drain material according to claim 1, wherein the twist rewinder and the warp rewinder are provided with a space therebetween, and the drain material moves while bridging between them.
ラを同レベルで平行に設けた第１のローラ対と、ドレー
ン材が縫うように間を挿通するローラを上下段に設けた
第２のローラ対を相互い直交する向きに設けた枠体を前
後・左右方向に振れるように吊支したねじれ戻し器と、
ドレーン材が間を通る空間を入り口部から出口部に向か
って漸次平坦にかつ偏平に形成する通し体からなるそり
戻し器とを打設機に設けたことを特徴とする天然繊維ド
レーン材の打設装置。3. A first roller pair in which rollers are provided in parallel at the same level with a drain material passing therethrough, and a roller in which upper and lower rollers are provided so that the drain material can be sewn between them. A twist return device in which a frame body provided with two roller pairs in directions orthogonal to each other is suspended and supported so as to swing in the front-back and left-right directions,
A striking machine is provided with a warping device composed of a threaded body that gradually and flatly forms a space through which the drain material passes from the inlet portion to the outlet portion. Equipment.
して打設機に設ける請求項３記載の天然繊維ドレーン材
の打設装置。4. The apparatus for placing a natural fiber drain material according to claim 3, wherein the twisting-back device and the warping-back device are provided in the placing machine at intervals.
ーン材差し入れ側でこの第１のローラ対のローラ端にこ
れと直交する向きにガイドローラを設ける請求項３また
は請求項４記載の天然繊維ドレーン材の打設装置。5. The twist rewinder according to claim 3 or 4, wherein a guide roller is provided at a roller end of the first roller pair on the drain material insertion side in a direction orthogonal to the roller end. Equipment for placing natural fiber drain material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8529296A JP2879423B2 (en) | 1996-04-08 | 1996-04-08 | Construction method and equipment of natural fiber drain material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8529296A JP2879423B2 (en) | 1996-04-08 | 1996-04-08 | Construction method and equipment of natural fiber drain material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09273141A true JPH09273141A (en) | 1997-10-21 |
| JP2879423B2 JP2879423B2 (en) | 1999-04-05 |
Family
ID=13854514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8529296A Expired - Lifetime JP2879423B2 (en) | 1996-04-08 | 1996-04-08 | Construction method and equipment of natural fiber drain material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2879423B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008163720A (en) * | 2007-01-05 | 2008-07-17 | Amano:Kk | Draining material used for improvement method of soft ground such as landfill |
-
1996
- 1996-04-08 JP JP8529296A patent/JP2879423B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008163720A (en) * | 2007-01-05 | 2008-07-17 | Amano:Kk | Draining material used for improvement method of soft ground such as landfill |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2879423B2 (en) | 1999-04-05 |
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