JP5921857B2 - Slope protection structure in which honeycomb-shaped three-dimensional solid cell structures are stacked vertically - Google Patents
Slope protection structure in which honeycomb-shaped three-dimensional solid cell structures are stacked vertically Download PDFInfo
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本発明は、ハニカム状３次元立体セル構造体の各セル内に、砂、砕石、コンクリート又は現地発生土を充填し、転圧することによって形成された複数のブロックを法面に沿って上下に積層した法面保護構造体において、上下に隣接するブロックの各セル構造体の法面に最も近いシートに設けた孔に、それぞれ、テンドンを貫通させ、該テンドンを地面に固定することにより前記複数のブロックが連結・一体化されていることを特徴とする法面保護構造体及びその構築方法に関する。 In the present invention, a plurality of blocks formed by filling sand, crushed stone, concrete, or locally generated soil in each cell of a honeycomb-shaped three-dimensional three-dimensional cell structure and rolling them down are stacked vertically along the slope. In the slope protection structure, a plurality of the plurality of the plurality of tendons are formed by penetrating the tendons through holes provided in the sheet closest to the slope of each cell structure of the vertically adjacent blocks, and fixing the tendons to the ground. The present invention relates to a slope protection structure characterized in that blocks are connected and integrated, and a construction method thereof.
従来、土木建築等の分野では、道路の路盤材、歩道の基礎材、仮設道路や擁壁等の土木用途の地盤補強材として、重荷重の支持や浸食防止等のために、ハニカム状３次元立体セル構造体が一般に使用されている。
かかるセル構造体は、例えば、図１及び図５に示すように、幅方向に並設された複数の長片状の樹脂又は繊維シートが互いに所定の間隔で千鳥状に繰り返し部分的に接合され、その幅方向と直行する方向に展張した時、該シートにより囲まれたハニカム状のセルが多数形成されるように、構成されている。
Conventionally, in the field of civil engineering and architecture, it is a honeycomb 3D as a ground reinforcement material for civil engineering applications such as roadbed materials, sidewalk foundation materials, temporary roads and retaining walls, etc. for supporting heavy loads and preventing erosion. A three-dimensional cell structure is generally used.
For example, as shown in FIG. 1 and FIG. 5, such a cell structure has a plurality of long pieces of resin or fiber sheets arranged in parallel in the width direction and is partially joined in a staggered manner at predetermined intervals. When expanded in the direction perpendicular to the width direction, a large number of honeycomb-shaped cells surrounded by the sheet are formed.
このようなハニカム状３次元立体セル構造体は、前記したセル構造により、軽量で、強度が優れるという特徴がある。かかるハニカム状３次元立体セル構造体は、通常、一定の大きさのブロックとして、折り畳まれた状態で、敷設現場に運ばれ、現場で展張して、使用される。例えば、ハニカム状３次元立体セル構造体は、略平面の地表面、例えば、河川堤防の斜面、法面に複数のブロックを連結して、あるいはさらに上下に積層して、敷設され、各ブロックを互いに連結し、ハニカム状の各セル内に、砂、砕石、コンクリート、現地発生土等の充填材を充填し、転圧し、場合により締め固めて、地盤補強材としての機能が発揮される（図１、図２参照）。 Such a honeycomb-shaped three-dimensional three-dimensional cell structure is characterized by being light in weight and excellent in strength due to the cell structure described above. Such a honeycomb-like three-dimensional three-dimensional cell structure is usually carried to a laying site in a folded state as a block having a certain size, and is used after being expanded on the site. For example, a honeycomb-like three-dimensional three-dimensional cell structure is laid by connecting a plurality of blocks to a substantially flat ground surface, for example, a slope of a river dike, or a slope, or by stacking them vertically. Connected to each other, each honeycomb-like cell is filled with fillers such as sand, crushed stone, concrete, and locally generated soil, rolled, and compacted in some cases to function as a ground reinforcement (Fig. 1, see FIG.
従来、ハニカム状３次元立体セル構造体を、河川堤防の斜面（法面）等に複数のブロックとして上下に積層して敷設する擁壁の構築方法においては、以下の特許文献１及び特許文献２に記載されるように、該セル構造体の層間を貫くように垂直に杭を打つことにより、ハニカム構造体間に一体性を持たせ、より強固で、壁高が高く、安全性の高い擁壁を構築することが提案されている。 Conventionally, in a method for constructing a retaining wall in which a honeycomb-shaped three-dimensional three-dimensional cell structure is laminated and laid as a plurality of blocks on a slope (slope) of a river embankment, etc., Patent Document 1 and Patent Document 2 below are used. The piles are driven vertically so as to penetrate between the layers of the cell structure, so that the honeycomb structure is integrated, stronger, higher in wall height, and higher in safety. It has been proposed to build a wall.
しかしながら、特許文献１に記載された発明においては、少なくとも３層のハニカム構造体層を貫く杭を打ち込むことが要求される。しかしながら、作業上の観点から、ある程度緩やかな斜面（法面）でないと、このような杭を打ち込むことはできないという問題がある。また、擁壁構築後に杭を打ち込むため、杭打ち機が必要である上、セル構造体を破損する虞がある。 However, in the invention described in Patent Document 1, it is required to drive a pile penetrating at least three honeycomb structure layers. However, from the viewpoint of work, there is a problem that such a pile cannot be driven unless the slope (slope) is somewhat gentle. Moreover, since a pile is driven after construction of a retaining wall, a pile driving machine is required and there is a risk of damaging the cell structure.
また、特許文献２に記載された発明においては、図３に示すように、段（層）を構築しながら、上下に隣接する段と段の間に杭を埋め込んでいく必要があるため、作業が面倒であり、杭の材料費が嵩み、また、水平方向には抵抗性があるものの、杭の長さが短いので上下方向の抵抗性はあまり高くないという問題がある。 In addition, in the invention described in Patent Document 2, as shown in FIG. 3, it is necessary to embed a pile between steps adjacent to each other while constructing steps (layers). However, there is a problem that the material cost of the pile is high and the resistance in the horizontal direction is high, but the resistance in the vertical direction is not so high because the length of the pile is short.
また、以下の特許文献３には、セル構造体の４隅のセル内に比較的長い杭を打ち込んだ積層構造体が開示されている。しかしながら、かかる４隅の杭は、セル構造体の展張治具を兼ねており、また、セル構造体を垂直方向に積み上げるために役立つものの、法面を保護するためには役立たない。 Patent Document 3 below discloses a laminated structure in which relatively long piles are driven into cells at four corners of the cell structure. However, the four corner piles also serve as a cell structure extension jig and are useful for stacking the cell structures vertically, but are not useful for protecting the slope.
一方、以下の特許文献４には、単層のセル構造体の展張方向に、セル構造体の樹脂又は繊維シートの孔にテンドンを貫通させ、該テンドンの一端を法面上部の地面に固定したアンカーに接続することにより、法面に敷設する単層のセル構造体の変位を防止する方法が開示されている。かかる発明においては、該テンドンの他端は、セル構造体の最下部及び／又は中間部においてセル構造体のシートの孔に固定されている。しかしながら、特許文献４に係る発明は、ハニカム状３次元立体セル構造体を、河川堤防の斜面（法面）等に複数のブロックとして上下に積層して敷設する擁壁の構築方法において、上下する層間の摩擦力を高めるための技術に関するものではない。 On the other hand, in Patent Document 4 below, in the extending direction of the single-layer cell structure, tendon is passed through the resin or fiber sheet hole of the cell structure, and one end of the tendon is fixed to the ground above the slope. A method for preventing displacement of a single-layer cell structure laid on a slope by connecting to an anchor is disclosed. In this invention, the other end of the tendon is fixed to the hole of the sheet of the cell structure at the lowermost part and / or the middle part of the cell structure. However, the invention according to Patent Document 4 moves up and down in a method for constructing a retaining wall in which a honeycomb-like three-dimensional three-dimensional cell structure is laminated and laid as a plurality of blocks on a slope (slope) of a river bank. It does not relate to a technique for increasing the frictional force between layers.
本発明が解決しようとする課題は、ハニカム状３次元立体セル構造体の各セル内に、砂、砕石、コンクリート又は現地発生土を充填し、転圧することによって形成される複数のブロックを法面に沿って上下に積層した法面保護構造体において、前記上下に積層した複数のブロック同士を、及び前記複数のブロック全体を法面に、強固に固定することができ、かつ、高い作業効率で構築することができる法面保護構造体、及びその構築方法を提供することである。 A problem to be solved by the present invention is that a plurality of blocks formed by filling sand, crushed stone, concrete, or locally generated soil in each cell of a honeycomb-shaped three-dimensional three-dimensional cell structure and rolling it to a slope. In the slope protection structure laminated up and down along the plurality of blocks, the plurality of blocks laminated up and down, and the whole of the plurality of blocks can be firmly fixed to the slope, and with high work efficiency It is to provide a slope protection structure that can be constructed, and a construction method thereof.
発明者らは、鋭意検討し、実験を重ねた結果、上下に隣接するブロックの各セル構造体の法面に最も近いシートに設けた孔に、それぞれ、テンドンを貫通させ、該テンドンを地山又は法面又は地面又は裏込材に固定することにより、前記課題を解決しうることを見出し、本発明を完成するに至った。すなわち、本発明は以下のとおりのものである。 As a result of intensive investigations and repeated experiments, the inventors have made tendons penetrate through holes provided in the sheet closest to the slope of each cell structure of adjacent blocks, and the tendons are grounded. Or it discovered that the said subject could be solved by fixing to a slope, the ground, or a backing material, and came to complete this invention. That is, the present invention is as follows.
［１］幅方向に並設された複数の長片状の樹脂又は繊維シートを互いに所定の間隔で千鳥状に繰り返し部分的に接合し、これを前記幅方向と直交する方向に展張することによってハニカム状のセルを形成するハニカム状３次元立体セル構造体の該各セル内に、砂、砕石、コンクリート又は現地発生土を充填し、転圧することによって形成された複数のブロックを法面に沿って上下に積層した法面保護構造体であって、
前記上下に隣接するブロックの各セル構造体の法面に最も近いシートに設けた孔に、法面に打設されたアンカーの係止部を経由して、それぞれ、テンドンを貫通させ、該テンドンを地山に固定することにより、前記複数のブロックが連結されていることを特徴とする法面保護構造体。
[1] By repeatedly joining a plurality of long pieces of resin or fiber sheets arranged in parallel in the width direction in a staggered manner at predetermined intervals, and extending them in a direction perpendicular to the width direction A plurality of blocks formed by filling sand cells, crushed stones, concrete, or locally generated soil into the respective cells of the honeycomb-shaped three-dimensional three-dimensional cell structure forming the honeycomb-shaped cells and rolling them along the slope. A slope protection structure laminated vertically
The tendons are passed through holes provided in the sheet closest to the slope of each cell structure of the block adjacent to the upper and lower sides through anchor locking portions placed on the slope , respectively. The slope protection structure according to claim 1, wherein the plurality of blocks are connected by fixing to a natural ground.
［２］前記テンドンの両端が、地中に打設したアンカーに結束することにより地山に固定されている、前記［１］に記載の法面保護構造体。 [2] The slope protecting structure according to [1], wherein both ends of the tendon are fixed to a natural ground by binding to anchors placed in the ground.
［３］前記テンドンの両端が、前記複数のブロックと法面との間に存在する裏込材の内部に埋設することにより、地山に固定されている、前記［１］に記載の法面保護構造体。 [ 3 ] The slope according to [1], wherein both ends of the tendon are fixed to a natural ground by being embedded in a backing material existing between the plurality of blocks and the slope. Protective structure.
［４］幅方向に並設された複数の長片状の樹脂又は繊維シートを互いに所定の間隔で千鳥状に繰り返し部分的に接合し、これを前記幅方向と直交する方向に展張することによってハニカム状のセルを形成するハニカム状３次元立体セル構造体の該各セル内に、砂、砕石、コンクリート又は現地発生土を充填し、転圧することによって形成された複数のブロックを法面に沿って上下に積層する法面保護構造体の構築方法において、以下のステップ：
（１）展張した最下層のセル構造体の法面に最も近いシートに設けた孔に、一端を地面に固定したテンドンを貫通させ、
（２）前記最下層のセル構造体の各セル内に、砂、砕石、コンクリート又は現地発生土を充填し、転圧し、
（３）前記最下層のセル構造体の上に、展張した次層のセル構造体を配置し、前記展張した次層のセル構造体の法面に最も近いシートに設けた孔に、法面に打設されたアンカーの係止部を経由して、前記テンドンを貫通させ、
（４）前記次層のセル構造体の各セル内に、砂、砕石、コンクリート又は現地発生土を充填し、転圧し、
（５）所定の層を構築するまで、前記ステップ（３）及び（４）を繰り返し、そして
（６）前記テンドンの他端を、地山に固定して、前記複数のブロックを連結し、一体化する、
を含む前記構築方法。
[ 4 ] By repeatedly joining a plurality of long pieces of resin or fiber sheets arranged in parallel in the width direction in a staggered manner at predetermined intervals, and extending them in a direction perpendicular to the width direction A plurality of blocks formed by filling sand cells, crushed stones, concrete, or locally generated soil into the respective cells of the honeycomb-shaped three-dimensional three-dimensional cell structure forming the honeycomb-shaped cells and rolling them along the slope. In the method of constructing a slope protection structure that is stacked up and down, the following steps:
(1) A tendon with one end fixed to the ground is passed through a hole provided in the sheet closest to the slope of the cell structure of the lowest layer that is spread,
(2) Fill each cell of the cell structure of the lowermost layer with sand, crushed stone, concrete or locally generated soil, and roll it.
(3) the above of the lowermost cell structure, arranged cell structures stretched the following layers, the hole provided in the closest sheet to the slope of the cell structure of the stretched the following layers, slope Through the anchoring portion of the anchor placed in, penetrating the tendon,
(4) Each cell of the cell structure of the next layer is filled with sand, crushed stone, concrete or locally generated soil, and rolled,
(5) Repeat steps (3) and (4) until a predetermined layer is constructed, and (6) fix the other end of the tendon to a natural ground and connect the plurality of blocks together. ,
The construction method comprising:
本発明に係る法面保護構造体において、上下に積層されたセル構造体層同士を連結し、一体化することができるだけでなく、該セル構造体層の全体を法面と一体化することもできる。さらに、本発明に係る法面保護構造体の構築方法においては、転圧され、締め固められたセル内の充填材に杭を打ち込む方法に比較して、水平方向だけではなく上下方向にも固定することができ、また作業もより簡単・短時間であり、さらに柔軟性のあるテンドンを使用することにより、セル構造体の各層を法面（地山）に固定することができる。 In the slope protection structure according to the present invention, not only the cell structure layers stacked one above the other can be connected and integrated, but also the whole cell structure layer can be integrated with the slope. it can. Furthermore, in the construction method of the slope protection structure according to the present invention, it is fixed not only in the horizontal direction but also in the vertical direction as compared with the method of driving the pile into the packing material in the compacted and compacted cell. In addition, the work is simpler and shorter, and each layer of the cell structure can be fixed to a slope (natural ground) by using a flexible tendon.
以下、本発明を詳細に説明する。
本発明は、幅方向に並設された複数の長片状の樹脂又は繊維シートを互いに所定の間隔で千鳥状に繰り返し部分的に接合し、これを前記幅方向と直交する方向に展張することによってハニカム状のセルを形成するハニカム状３次元立体セル構造体の該各セル内に、砂、砕石、コンクリート又は現地発生土を充填し、転圧することによって形成された複数のブロックを法面に沿って上下に積層した法面保護構造体であって、
前記上下に隣接するブロックの各セル構造体の法面に最も近いシートに設けた孔に、それぞれ、テンドンを貫通させ、該テンドンを地山に固定することにより、前記複数のブロックが連結されていることを特徴とする法面保護構造体に関する。
Hereinafter, the present invention will be described in detail.
According to the present invention, a plurality of long pieces of resin or fiber sheets arranged side by side in the width direction are partially joined in a staggered manner at predetermined intervals, and are stretched in a direction perpendicular to the width direction. A plurality of blocks formed by filling sand, crushed stone, concrete, or locally generated soil into each cell of the honeycomb-shaped three-dimensional three-dimensional cell structure forming the honeycomb-shaped cell by the rolling, and using as a slope A slope protection structure laminated vertically along
The plurality of blocks are connected by penetrating tendons through holes provided in the sheet closest to the slope of each cell structure of the blocks adjacent above and below, and fixing the tendons to the ground. The present invention relates to a slope protection structure.
幅方向に並設された複数の長片状の樹脂又は繊維シートを互いに所定の間隔で千鳥状に繰り返し部分的に接合し、これを前記幅方向と直交する方向に展張することによってハニカム状のセルを形成するハニカム状３次元立体セル構造体とは、一般に、土木建築等の分野で、道路の路盤材、歩道の基礎材、仮設道路や擁壁、河川堤防の法面保護等の土木用途の地盤補強材として、重荷重の支持、浸食防止等のために使用されるハニカム状３次元立体セル構造体であることができる。前記樹脂又は繊維シートの材質は特に限定されないが、耐候性の観点からポリエチレンが好ましい。樹脂又は繊維シートの接合の間隔（ピッチ）は２００〜８００ｍｍが好ましい。前記接合は、例えば、熱融着等の手段によって行われる。前記ハニカム状３次元立体セル構造体の各ブロックは、好ましくは縦３〜４０個、横５〜１０個のセルを有する。該セル構造体の展張後の大きさは、好ましくは縦７００〜８０００ｍｍ、横２０００〜３５００ｍｍ、長辺状の樹脂又は繊維シートの高さ１００〜４００ｍｍである。 A plurality of long pieces of resin or fiber sheets arranged in parallel in the width direction are partially joined in a staggered manner at predetermined intervals to each other, and this is stretched in a direction perpendicular to the width direction to form a honeycomb-like The honeycomb-shaped three-dimensional cell structure forming cells is generally used in civil engineering and other fields, such as roadbed materials, foundation materials for sidewalks, temporary roads and retaining walls, and protection of slopes on river dikes. As the ground reinforcing material, a honeycomb-shaped three-dimensional cell structure used for supporting heavy loads, preventing erosion and the like can be used. The material of the resin or fiber sheet is not particularly limited, but polyethylene is preferable from the viewpoint of weather resistance. The bonding interval (pitch) of the resin or fiber sheet is preferably 200 to 800 mm. The joining is performed by means such as heat fusion. Each block of the honeycomb-shaped three-dimensional three-dimensional cell structure preferably has 3 to 40 vertical cells and 5 to 10 horizontal cells. The size of the cell structure after stretching is preferably 700 to 8000 mm in length, 2000 to 3500 mm in width, and 100 to 400 mm in height of the long-sided resin or fiber sheet.
かかるセル構造体は、一般に、ブロック毎に、折り畳んで現場に搬入され、施工地表面上で展張され、ブロック同士を連結し、形成された各セルに砂、砕石、コンクリート、現地発生土等の充填材を充填し、転圧し、締め固めることにより、例えば、河川の堤防法面に敷設される。また、かかるセル構造体のブロックは上下に積層されて盛土壁面等を構築するために使用される。 Such a cell structure is generally folded into each block, carried to the site, spread on the surface of the construction site, connected to each other, and sand, crushed stone, concrete, locally generated soil, etc. are formed in each formed cell. For example, it is laid on the dike slope of a river by filling, rolling and compacting the filler. Moreover, the block of this cell structure is laminated | stacked up and down, and is used in order to construct | fill a bank wall surface etc.
図５に示すように、前記ハニカム状３次元立体セル構造の長片状の樹脂又は繊維シートとして、予め大小複数の孔４が設けられた有孔シートを用いてもよい。これらの孔は、例えば、各ブロックを連結するための孔、セル構造体自体を軽量化するための孔、充填材の水はけのための孔としても機能する。
図６と図７に示すように、本発明においては、かかる孔４は、テンドン７がその中に貫通することができる程度の大きさであることができる。
一方、前記セル構造体の法面に最も近いシートに設けた孔は、施工現場において穿孔されたものであってもよい。
As shown in FIG. 5, a perforated sheet in which a plurality of large and small holes 4 are provided in advance may be used as the long piece-like resin or fiber sheet having the honeycomb-shaped three-dimensional cell structure. These holes also function as, for example, holes for connecting the blocks, holes for reducing the weight of the cell structure itself, and holes for draining the filler.
As shown in FIGS. 6 and 7, in the present invention, the hole 4 can be large enough to allow the tendon 7 to penetrate therethrough.
On the other hand, the hole provided in the sheet closest to the slope of the cell structure may be drilled at a construction site.
「テンドン」とは、一般に、地すべり抑止工法としてのアンカー工法に使用される、アンカー体、引張り部、アンカー頭部から構成されるグラウンドアンカーの引張り部を構成する通常ＰＣ鋼棒、ＰＣ鋼より線、多重ＰＣ鋼より線、連続繊維補強材などの材料、すなわち、引張り力又は緊張力に耐える線条体、好ましくは、連続繊維補強材、炭素繊維より線等である。連続繊維補強材としては、ポリエステル、ポリプロピレン等の合成繊維テープ又はロープが好ましく用いられる。本発明において使用するテンドンは、曲がることができる柔軟性のある連続繊維補強材であることが好ましい。 “Tendon” is a normal PC steel bar and PC steel strand that constitutes the tensile part of a ground anchor that is generally composed of an anchor body, a tension part, and an anchor head, which is used in an anchor method as a landslide prevention method. In addition, a material such as a multi-PC steel strand or continuous fiber reinforcement, that is, a linear body that can withstand tensile force or tension, preferably a continuous fiber reinforcement, carbon fiber strand, or the like. As the continuous fiber reinforcing material, a synthetic fiber tape or rope such as polyester or polypropylene is preferably used. The tendon used in the present invention is preferably a flexible continuous fiber reinforcing material that can be bent.
図６に示すように、本発明の第１の態様においては、テンドン７の両端が、地中に打設した鉄筋アンカー９に結束することにより地山に固定されている。 As shown in FIG. 6, in the 1st aspect of this invention, the both ends of the tendon 7 are being fixed to the natural ground by binding to the reinforcing bar anchor 9 pierced in the ground.
図７に示すように、本発明の第２の態様においては、上下に隣接するブロックの各セル構造体の法面に最も近いシートに設けた孔４の間に貫通するテンドン７が、法面に打設された鉄筋アンカー９の係止部を経由している。これにより、第２の態様は、第１の態様に比較して、各層をより強固に法面に固定することが可能となる。 As shown in FIG. 7, in the second aspect of the present invention, the tendon 7 penetrating between the holes 4 provided in the sheet closest to the slope of each cell structure of the vertically adjacent blocks is a slope. It passes through the locking portion of the reinforcing bar anchor 9 that has been driven into. Thereby, the 2nd mode can fix each layer to a slope more firmly compared with the 1st mode.
図８に、本発明の第３の態様を示す。かかる態様においては、テンドンの両端が、複数のブロックと法面との間に存在する裏込材の内部に埋設することにより、地山に固定されている。一般に、テンドン７は、その両端を、さらに中間部を、地中に打設した鉄筋アンカー９に結束することにより確実に固定することができるが、裏込材の内部に一定長埋設することによっても、充分な力で固定することができる場合がある。したがって、本発明においては、テンドンの両端の地山又は地面への固定方法は、上記いずれの態様であっても構わない。 FIG. 8 shows a third aspect of the present invention. In such an embodiment, both ends of the tendon are fixed to the natural ground by being embedded in the backing material existing between the plurality of blocks and the slope. In general, the tendon 7 can be securely fixed by binding its both ends and further the intermediate part to a reinforcing bar anchor 9 placed in the ground, but by embedding a fixed length inside the backing material. In some cases, it can be fixed with sufficient force. Therefore, in the present invention, the method of fixing the tendons to both ends of the tendon or the ground may be any of the above-described modes.
本発明においては、上下に隣接するブロックの各セル構造体の法面に最も近いシートに設けた孔に、それぞれ、テンドンを貫通させ、該テンドンを地山に固定することにより、前記複数のブロックが連結されている。そしてこのように配置されたテンドンは、各セル内に充填材を充填し、転圧し、場合により締め固めることにより、上下に隣接するセル構造体層同士を、強い摩擦力をもって、水平方向だけではなく垂直方向にも、固定することができる。また、該テンドンの両端を、地中に打設した鉄筋アンカーに結束することによって、積層されたセル構造体の全体を、法面に確実に固定することができる。かかる固定の摩擦力は、各層毎に鉄筋アンカーを設けた図７に示す第２の態様において最大となるであろう。 In the present invention, each of the plurality of blocks is formed by penetrating tendons through holes provided in a sheet closest to the slope of each cell structure of blocks adjacent to each other vertically, and fixing the tendons to natural ground. Are connected. And the tendons arranged in this way are filled with fillers in each cell, rolled, and optionally compacted, so that the cell structure layers adjacent to each other with a strong frictional force in the horizontal direction alone. It can also be fixed vertically. Further, by binding both ends of the tendon to a reinforcing bar anchor placed in the ground, the entire stacked cell structure can be reliably fixed to the slope. Such a fixed frictional force will be greatest in the second embodiment shown in FIG. 7 in which a reinforcing bar anchor is provided for each layer.
本発明は、幅方向に並設された複数の長片状の樹脂又は繊維シートを互いに所定の間隔で千鳥状に繰り返し部分的に接合し、これを前記幅方向と直交する方向に展張することによってハニカム状のセルを形成するハニカム状３次元立体セル構造体の該各セル内に、砂、砕石、コンクリート又は現地発生土を充填し、転圧することによって形成された複数のブロックを法面に沿って上下に積層する法面保護構造体の構築方法において、以下のステップ：
（１）展張した最下層のセル構造体の法面に最も近いシートに設けた孔に、一端を地面に固定したテンドンを貫通させ、
（２）前記最下層のセル構造体の各セル内に、砂、砕石、コンクリート又は現地発生土を充填し、転圧し、
（３）前記最下層のセル構造体の上に、展張した次層のセル構造体を配置し、
前記展張した次層のセル構造体の法面に最も近いシートに設けた孔に、前記テンドンを貫通させ、
（４）前記次層のセル構造体の各セル内に、砂、砕石、コンクリート又は現地発生土を充填し、転圧し、
（５）所定の層を構築するまで、前記ステップ（３）及び（４）を繰り返し、そして
（６）前記テンドンの他端を、地山に固定して、前記複数のブロックを連結し、一体化する、
を含む前記構築方法にも関する。
According to the present invention, a plurality of long pieces of resin or fiber sheets arranged side by side in the width direction are partially joined in a staggered manner at predetermined intervals, and are stretched in a direction perpendicular to the width direction. A plurality of blocks formed by filling sand, crushed stone, concrete, or locally generated soil into each cell of the honeycomb-shaped three-dimensional three-dimensional cell structure forming the honeycomb-shaped cell by the rolling, and using as a slope In the method of constructing a slope protection structure that is laminated up and down along the following steps:
(1) A tendon with one end fixed to the ground is passed through a hole provided in the sheet closest to the slope of the cell structure of the lowest layer that is spread,
(2) Fill each cell of the cell structure of the lowermost layer with sand, crushed stone, concrete or locally generated soil, and roll it.
(3) A cell structure of the extended next layer is disposed on the cell structure of the lowermost layer,
The tendon is passed through a hole provided in the sheet closest to the slope of the cell structure of the extended next layer,
(4) Each cell of the cell structure of the next layer is filled with sand, crushed stone, concrete or locally generated soil, and rolled,
(5) Repeat steps (3) and (4) until a predetermined layer is constructed, and (6) fix the other end of the tendon to a natural ground and connect the plurality of blocks together. ,
The construction method including:
かかる方法は、特許文献２又は３に記載された杭を用いる方法に比較して、杭打ちの手間や材料費が不要である点で、コスト面で有利であるばかりでなく、短時間での作業が可能となる点でも有利である。このように短時間で法面保護構造を構築できることは、特に、水害発生時又は予測時に、河川堤防の法面を緊急に保護・復旧する必要がある場合に、極めて有益である。 Such a method is not only advantageous in terms of cost, but also in a short period of time because it eliminates the need for pile driving and material costs compared to the method using a pile described in Patent Document 2 or 3. It is also advantageous in that the work can be performed. The ability to construct a slope protection structure in such a short time is extremely beneficial especially when it is necessary to urgently protect and restore the slope of a river embankment when a flood occurs or is predicted.
本発明に係る法面保護構造体においては、上下に積層したセル構造体層同士を連結し、一体化することができるだけでなく、該セル構造体層の全体を法面と一体化することもできる。さらに、本発明に係る法面保護構造体の構築方法においては、転圧し、締め固めたセル内の充填材に杭を打ち込む方法に比較して、水平方向だけではなく上下方向にも固定することができ、また、作業もより簡単・短時間であり、さらに、柔軟性のあるテンドンを使用することにより、セル構造体の各層を法面（地山）に固定することができる。したがって、本発明に係る法面保護構造体及びその構築方法は、河川堤防の法面保護等に好適に利用可能である。 In the slope protection structure according to the present invention, not only the cell structure layers stacked one above the other can be connected and integrated, but also the whole cell structure layer can be integrated with the slope. it can. Furthermore, in the construction method of the slope protection structure according to the present invention, it is fixed not only in the horizontal direction but also in the vertical direction as compared with the method of driving the pile into the packing material in the compacted and compacted cell. In addition, the work is easier and shorter, and each layer of the cell structure can be fixed to a slope (natural ground) by using a flexible tendon. Therefore, the slope protection structure and the construction method thereof according to the present invention can be suitably used for slope protection of river banks.
１ ハニカム状３次元立体セル構造体
２ セル構造体のセル
３ 砂、砕石、コンクリート、現地発生土等の充填材
４ ハニカム状３次元立体セル構造の長片状の樹脂又は繊維シートに設けられた大小複数の孔
５ 杭
６ 斜面（法面）又は地山
７ テンドン
８ アンカー
９ 鉄筋アンカー
１０ 裏込材
DESCRIPTION OF SYMBOLS 1 Honeycomb three-dimensional three-dimensional cell structure 2 Cell of cell structure 3 Filler such as sand, crushed stone, concrete, locally generated soil 4 Provided on long piece of resin or fiber sheet of honeycomb three-dimensional three-dimensional cell structure Large and small holes 5 Pile 6 Slope (slope) or ground 7 Tendon 8 Anchor 9 Rebar anchor 10 Backing material
Claims (4)
前記上下に隣接するブロックの各セル構造体の法面に最も近いシートに設けた孔に、法面に打設されたアンカーの係止部を経由して、それぞれ、テンドンを貫通させ、該テンドンを地山に固定することにより、前記複数のブロックが連結されていることを特徴とする法面保護構造体。 A plurality of long pieces of resin or fiber sheets arranged in parallel in the width direction are partially joined in a staggered manner at predetermined intervals to each other, and this is stretched in a direction perpendicular to the width direction to form a honeycomb-like A plurality of blocks formed by filling sand cells, crushed stone, concrete, or locally generated soil into the cells of the honeycomb-shaped three-dimensional three-dimensional cell structure forming the cells and rolling them up and down along the slope A laminated slope protection structure,
The tendons are passed through holes provided in the sheet closest to the slope of each cell structure of the block adjacent to the upper and lower sides through anchor locking portions placed on the slope , respectively. The slope protection structure according to claim 1, wherein the plurality of blocks are connected by fixing to a natural ground.
（１）展張した最下層のセル構造体の法面に最も近いシートに設けた孔に、一端を地面に固定したテンドンを貫通させ、
（２）前記最下層のセル構造体の各セル内に、砂、砕石、コンクリート又は現地発生土を充填し、転圧し、
（３）前記最下層のセル構造体の上に、展張した次層のセル構造体を配置し、前記展張した次層のセル構造体の法面に最も近いシートに設けた孔に、法面に打設されたアンカーの係止部を経由して、前記テンドンを貫通させ、
（４）前記次層のセル構造体の各セル内に、砂、砕石、コンクリート又は現地発生土を充填し、転圧し、
（５）所定の層を構築するまで、前記ステップ（３）及び（４）を繰り返し、そして
（６）前記テンドンの他端を、地山に固定して、前記複数のブロックを連結し、一体化する、
を含む前記構築方法。 A plurality of long pieces of resin or fiber sheets arranged in parallel in the width direction are partially joined in a staggered manner at predetermined intervals to each other, and this is stretched in a direction perpendicular to the width direction to form a honeycomb-like A plurality of blocks formed by filling sand cells, crushed stone, concrete, or locally generated soil into the cells of the honeycomb-shaped three-dimensional three-dimensional cell structure forming the cells and rolling them up and down along the slope In the construction method of the slope protection structure to be laminated, the following steps are performed:
(1) A tendon with one end fixed to the ground is passed through a hole provided in the sheet closest to the slope of the cell structure of the lowest layer that is spread,
(2) Fill each cell of the cell structure of the lowermost layer with sand, crushed stone, concrete or locally generated soil, and roll it.
(3) the above of the lowermost cell structure, arranged cell structures stretched the following layers, the hole provided in the closest sheet to the slope of the cell structure of the stretched the following layers, slope Through the anchoring portion of the anchor placed in, penetrating the tendon,
(4) Each cell of the cell structure of the next layer is filled with sand, crushed stone, concrete or locally generated soil, and rolled,
(5) Repeat steps (3) and (4) until a predetermined layer is constructed, and (6) fix the other end of the tendon to a natural ground and connect the plurality of blocks together. ,
The construction method comprising:
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