JP2016102313A - Retaining wall structure and construction method thereof - Google Patents
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本発明は、擁壁構造体及びその構築工法に関する。 The present invention relates to a retaining wall structure 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、擁壁、堤防斜面又は法面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、ハニカム状３次元立体セル構造体が使用されている。
しかしながら、日本国内では、かかる立体セル構造体を、河川護岸に適用した例、すなわち、河川の堤防などを保護する工作物として利用した例は、ほとんどない。
以下の特許文献１には、河川、沼沢、湖あるいは海岸等の護岸、水中構造物の根固め、法面の保護等の各種土木工事に用いられる「ふとんかご」と、この「ふとんかご」を用いた保護工並びに該ふとんかごへの中詰め材の充填方法が開示されている。かかる「ふとんかご」は、編目構造のメッシュ体で囲われた型枠であって、その内部に中詰め材を充填するものであるが、特許文献１には、かかる中詰め材として、土壌、例えば、植物種子あるいは発芽可能な根塊等を含む土壌、石塊等が挙げられているに過ぎない。
Conventionally, in the field of civil engineering and construction, as a ground reinforcement for civil engineering applications such as road base materials, sidewalk foundation materials, temporary roads, retaining walls, levee slopes or slopes, to support heavy loads and prevent erosion, etc. In addition, a honeycomb-like three-dimensional solid cell structure is used.
However, in Japan, there are almost no examples in which such a three-dimensional cell structure is applied to a river revetment, that is, as a work for protecting a river bank.
In the following Patent Document 1, “Futon basket” used for various civil engineering works such as river, marsh, lake or coastal revetment, underwater structure consolidation, slope protection, etc. The protective work used and the filling method of the filling material in the futon basket are disclosed. Such a “futon basket” is a form surrounded by a mesh body having a stitch structure, and is filled with a filling material therein. Patent Document 1 discloses, as such filling material, soil, For example, only soil including a plant seed or germinable root mass, a stone mass, etc. are mentioned.
前記したハニカム状３次元立体セル構造体は、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、その幅方向と直交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。 In the above honeycomb-shaped three-dimensional cell structure, 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 orthogonal to the width direction. When the sheet is stretched in the 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、そのセル構造により、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、現場で展張されて使用される。そして、一般に、略平面又は法面の地表面に複数のブロックとして敷設され、各ブロックを互いに連結し、ハニカム状の各セル内に、１つの塊でなく、多数の塊、粒状物、粉体、固化物の形状である、砂、砕石、又は現地発生土の充填材を、立体セル構造体の天端まで充填し、転圧して、地盤補強材としての機能を発揮しうるものとされる。 Such a honeycomb-like three-dimensional three-dimensional cell structure is characterized by being lightweight and excellent in strength due to the cell structure. Such a honeycomb-shaped three-dimensional three-dimensional cell structure is usually transported to a laying site in a folded state as a block having a certain size, and is used after being expanded on the site. In general, the blocks are laid as a plurality of blocks on the substantially flat or sloped ground surface, and the blocks are connected to each other, and not a single lump, but a large number of lumps, granular materials, and powders in each honeycomb cell. It is assumed that the solid material is filled with sand, crushed stone, or locally generated soil filler up to the top of the three-dimensional cell structure and rolled to exert its function as a ground reinforcement. .
しかしながら、充填材として砕石を充填した立体セル構造体ブロックで構築した河川護岸において、増水の影響によりセルからの砕石や砂の流出が見られる場合がある。
かかる状況に鑑みて、立体セル構造体を河川護岸等の水際用に適用する場合に、充填材として適したものを選定することによって強度、防水性及び排水性を向上させ、護岸としての安定性が高く、かつ、施工が容易な護岸保護構造体を提供する必要がある。
However, in river revetments constructed with a three-dimensional cell structure block filled with crushed stone as a filler, crushed stone and sand outflow from the cell may be seen due to the increase in water.
In view of such a situation, when applying a three-dimensional cell structure to the waterside such as a river revetment, the strength, waterproofness and drainage are improved by selecting a suitable filler, and stability as a revetment It is necessary to provide a revetment protection structure that is expensive and easy to construct.
本発明は、上述した従来の実情に鑑みてなされたものであり、強度及び排水性を向上させ、河川護岸等の水際用に使用でき、かつ、施工が容易な擁壁構造体及びその構築工法を提供することを目的とする。 The present invention has been made in view of the above-described conventional situation, improves the strength and drainage, can be used for the riverside such as river revetment, and can be easily constructed, and its construction method The purpose is to provide.
発明者らは、鋭意検討し、実験を重ねた結果、立体セル構造体の中詰め材としてコンクリート又はモルタルを用い、後方の法面との間に排水層を有し、排水層に連通して立体セル構造体を貫通する排水管を有することにより、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 studies and repeated experiments, the inventors have used concrete or mortar as the filling material for the three-dimensional cell structure, have a drainage layer between the rear slope, and communicated with the drainage layer. It has been found that the above problem can be solved by having a drain pipe penetrating the three-dimensional cell structure, and the present invention has been completed. 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、中詰め材を充填することによって形成された複数のブロックが上下に積層されてなり、
前記中詰め材がコンクリート又はモルタルであり、
後方の法面との間に排水層を有し、
前記排水層に連通し前記立体セル構造体を貫通する排水管を有することを特徴とする擁壁構造体。
［２］
前記法面が、河川、池又は湖の護岸である、[１]に記載の擁壁構造体。
［３］
前記排水管が逆止弁を有する、[１]又は[２]に記載の擁壁構造体。
［４］
前記立体セル構造体の一片の長さは４００〜８００ｍｍ、高さは２００〜４００ｍｍであり、
幅方向と直交する方向のセルの数が２である、[１]〜[３]のいずれか一項に記載の擁壁構造体。
［５］
以下の工程：
（１）幅方向に並設された複数の長辺状の樹脂又は繊維シートを互い所定の間隔で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複数のブロックを用意し、
（２）コンクリート又はモルタルを用意し、
（３）前記立体セル構造体の所定の位置に立体セル構造体を貫通する排水管を擁壁と直角方向に取り付け、
（４）前記立体セル構造体の第１のブロックを、補助枠を用いて展張しつつ所定の設置箇所に敷設し、
（５）該展張された立体セル構造体の各セル内に、前記コンクリート又はモルタルを充填し、前記補助枠を外し、
（６）前記立体セル構造体と後方の法面の間に砕石を充填し、
（７）前記立体セル構造体の第２のブロックを、補助枠を用いて展張しつつ敷設し、
（８）前記立体セル構造体の所望の数のブロックの前記コンクリート又はモルタルの充填が完了するまで、工程（４）〜（７）を繰り返して、所望の段数の前記立体セル構造体のブロックを積み重ねる、を含む擁壁構造体の構築工法。
[1]
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 In each cell of the honeycomb-shaped three-dimensional three-dimensional cell structure forming the cell, a plurality of blocks formed by filling the filling material are stacked one above the other,
The filling material is concrete or mortar,
A drainage layer between the rear slope and
A retaining wall structure having a drain pipe communicating with the drainage layer and penetrating the three-dimensional cell structure.
[2]
The retaining wall structure according to [1], wherein the slope is a river, pond or lake revetment.
[3]
The retaining wall structure according to [1] or [2], wherein the drain pipe has a check valve.
[4]
The length of one piece of the three-dimensional cell structure is 400 to 800 mm, the height is 200 to 400 mm,
The retaining wall structure according to any one of [1] to [3], wherein the number of cells in a direction orthogonal to the width direction is two.
[5]
The following steps:
(1) A plurality of long-sided resins or fiber sheets arranged side by side in the width direction are partially joined repeatedly at a predetermined interval, and this is stretched in a direction perpendicular to the width direction to form a honeycomb-like Preparing a plurality of blocks of a honeycomb-shaped three-dimensional three-dimensional cell structure forming cells;
(2) Prepare concrete or mortar,
(3) A drain pipe penetrating the three-dimensional cell structure is attached to a predetermined position of the three-dimensional cell structure in a direction perpendicular to the retaining wall,
(4) The first block of the three-dimensional cell structure is laid at a predetermined installation location while being extended using an auxiliary frame,
(5) In each cell of the expanded three-dimensional cell structure, the concrete or mortar is filled, and the auxiliary frame is removed.
(6) A crushed stone is filled between the three-dimensional cell structure and the rear slope.
(7) Laying out the second block of the three-dimensional cell structure using an auxiliary frame,
(8) Steps (4) to (7) are repeated until the filling of the desired number of blocks of the three-dimensional cell structure with the concrete or mortar is completed, and the blocks of the three-dimensional cell structure having the desired number of steps are obtained. Retaining wall structure construction method including stacking.
本発明の擁壁構造体によれば、ハニカム状３次元立体セル構造体の各セル内に、中詰め材としてコンクリート又はモルタルが充填されているので、十分な強度を有するとともに、水につかっても中詰め材が流出することはない。また、排水層、及び立体セル構造体を貫通する排水管を有するので、排水性が向上する。これにより本発明では、河川護岸等の水際用に使用でき、かつ、施工が容易な擁壁構造体及びその構築工法を提供することができる。 According to the retaining wall structure of the present invention, each cell of the honeycomb-shaped three-dimensional cell structure is filled with concrete or mortar as the filling material, so that it has sufficient strength and is immersed in water. However, the filling material will not flow out. Moreover, since it has the drainage pipe which penetrates a drainage layer and a three-dimensional cell structure, drainage property improves. Thereby, in this invention, the retaining wall structure which can be used for the watersides, such as a river revetment, and is easy to construct, and its construction method can be provided.
以下、本発明の実施の形態について、図面を参照しながら説明する。
図１は、本発明の擁壁構造体の一構成例を模式的に示す図である。
本発明の擁壁構造体１０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２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３を形成するハニカム状３次元立体セル構造体１の各セル３内に、中詰め材４を充填することによって形成された複数のブロックが上下に積層されてなる。
そして本発明の擁壁構造体１０は、中詰め材４がコンクリート又はモルタルであり、後方の法面２０との間に排水層１１を有し、排水層１１に連通し立体セル構造体１を貫通する排水管１２を有することを特徴とする。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram schematically illustrating a configuration example of a retaining wall structure according to the present invention.
The retaining wall structure 10 according to the present invention is configured such that a plurality of long pieces of resin or fiber sheets 2 arranged in parallel in the width direction are partially joined in a staggered manner at predetermined intervals, and this is orthogonal to the width direction. A plurality of blocks formed by filling the filling material 4 in each cell 3 of the honeycomb-shaped three-dimensional three-dimensional cell structure 1 that forms the honeycomb-shaped cell 3 by extending in the direction of the stack. Being done.
The retaining wall structure 10 according to the present invention has the filling material 4 made of concrete or mortar, and has a drainage layer 11 between the rear slope 20 and the three-dimensional cell structure 1 communicated with the drainage layer 11. It has the drain pipe 12 penetrated.
本発明に係る擁壁構造体１０を構成する、ハニカム状３次元立体セル構造体１（立体セル構造体１）とは、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２を互い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３を形成する。このようなハニカム状３次元立体セル構造体１としては、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使用されている、図２に示すような、ハニカム状３次元立体セル構造体１であることができるが、これに限定されるものではない。該立体セル構造体１は、例えば、ジオウェブ（登録商標）であることができる。 The honeycomb-shaped three-dimensional three-dimensional cell structure 1 (three-dimensional cell structure 1) constituting the retaining wall structure 10 according to the present invention is a plurality of long pieces of resin or fiber sheet 2 arranged in parallel in the width direction. Are partially joined in a staggered manner at predetermined intervals, and this is stretched in a direction perpendicular to the width direction to form a honeycomb-shaped cell 3. Such a honeycomb-shaped three-dimensional three-dimensional cell structure 1 is generally used as a ground reinforcing material for civil engineering applications such as road base materials, sidewalk foundation materials, temporary roads and retaining walls in the field of civil engineering and construction. Although it can be a honeycomb-like three-dimensional three-dimensional cell structure 1 as shown in FIG. 2 that is used for supporting a load or preventing erosion, the present invention is not limited to this. The three-dimensional cell structure 1 can be, for example, Geoweb (registered trademark).
前記樹脂又は繊維シート２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２の接合の間隔（ピッチ）は４００〜８００ｍｍ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。接合部の幅は通常１０〜２０ｍｍであり、かかる接合部の一定幅の存在により、展張時に略菱形となるセル形状において、対抗する２つの角はセルの内側に向かって潰れたものとなる（図２参照）。 The material of the resin or fiber sheet 2 is not particularly limited, but polyethylene is preferable from the viewpoint of weather resistance. The bonding interval (pitch) of the resin or fiber sheet 2 is preferably 400 to 800 mm. The joining is performed by means such as heat fusion. The width of the joint is usually 10 to 20 mm, and due to the presence of the constant width of the joint, two opposing corners are crushed toward the inner side of the cell in the cell shape that becomes a substantially rhombus during expansion ( (See FIG. 2).
図２に示すように、前記立体セル構造体１の長片状の樹脂又は繊維シート２として、予め大小複数の孔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、立体セル構造体自体を軽量化するための孔としても機能する。 As shown in FIG. 2, a perforated sheet in which a plurality of large and small holes are provided in advance may be used as the long piece of resin or fiber sheet 2 of the three-dimensional cell structure 1. These holes also function as, for example, holes for connecting the blocks and holes for reducing the weight of the three-dimensional cell structure itself.
かかる立体セル構造体１は、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３に、中詰め材４としてコンクリート又はモルタルを、樹脂又は繊維シート２の高さ（立体セル構造体１の天端）まで充填（中詰め）し、転圧し、締め固めることにより、例えば、河川の堤防法面（法面２０）に敷設される。また、かかる立体セル構造体１は、河川、池、湖等の護岸等の斜面（法面２０）に沿って複数のブロックを階段状に積層されて盛土壁面等を構築するために使用される。 The three-dimensional cell structure 1 is folded for each block, carried to the site, expanded on the surface of the construction site, connected to each other, and each formed cell 3 is filled with concrete or mortar as the filling material 4. For example, the resin or fiber sheet 2 is laid on the river dike slope (slope 20) by filling (inner filling) up to the height (top of the three-dimensional cell structure 1), rolling and compacting. The In addition, the three-dimensional cell structure 1 is used for constructing a bank wall or the like by stacking a plurality of blocks in a staircase pattern along a slope (slope 20) of a bank, such as a river, pond, or lake. .
従来、各セルに、中詰め材として砕石やブロック、現場土などが充填されていたが、本発明では、中詰め材４としてコンクリート又はモルタルを充填している。これにより構造体としての強度が高く、また、防水性を有するものとなる。
立体セル構造体１にコンクリート又はモルタルを充填して擁壁構造体１０を構成することにより、従来のコンクリート積み、現場打ちコンクリートによる擁壁構造体１０に比較して、迅速な施工が可能である。また、中詰め材４として砂、砕石又は現地発生土を充填した場合、増水時に水につかるなどして、中詰め材４の流出及び強度低下のおそれがあるが、本発明では中詰め材４の流出のおそれはなく、水につかる場所でも使用可能である。したがって本発明の擁壁構造体１０を、河川護岸等の、水際用に使用できる。
Conventionally, each cell is filled with crushed stones, blocks, on-site soil or the like as the filling material, but in the present invention, concrete or mortar is filled as the filling material 4. As a result, the strength of the structure is high and it has waterproofness.
By constructing the retaining wall structure 10 by filling the three-dimensional cell structure 1 with concrete or mortar, it is possible to perform construction more quickly than the retaining wall structure 10 made of conventional concrete piles and cast-in-place concrete. . In addition, when sand, crushed stone, or locally generated soil is filled as the filling material 4, there is a risk that the filling material 4 may flow out and the strength may be reduced due to water immersion or the like. There is no risk of spillage, and it can be used even in places where it gets wet. Therefore, the retaining wall structure 10 of the present invention can be used for waterside such as river revetment.
本発明に係る擁壁構造体１０に使用されるハニカム状３次元立体セル構造体１の樹脂又は繊維シート２の高さは例えば２００〜４００ｍｍであり、セル３の一辺の長さ（接合の間隔）Ｌは例えば４００〜８００ｍｍであることができる。セル３の大きさを上記範囲にすることで、敷設作業が容易となる。セル３の一辺の長さが８００ｍｍを超えると、取扱いにかなりの力を要し、また、セル３の一辺の長さが４００ｍｍよりも小さいとセル内部にコンクリート又はモルタルを充填する作業が困難となり、全体としての堤防構築速度が低下する。コンクリート又はモルタルとしては、例えばスランプが８ｃｍ程度のものを用いることが作業性の観点から好ましい。
セルサイズを従来に比べて大きくすることで、コンクリート又はモルタルの充填において迅速に作業が可能となる。従来の立体セル構造体１のように中詰め材が砕石あるいは土の場合、セル３が大きいと構造体の強度が低くなってしまい不利であるが、本発明では、この問題はない。また、セル３が大きいと、法面２０が曲面である場合でも施工しやすく、現場に搬入しやすいという利点もある。
The height of the resin or fiber sheet 2 of the honeycomb-shaped three-dimensional three-dimensional cell structure 1 used in the retaining wall structure 10 according to the present invention is, for example, 200 to 400 mm, and the length of one side of the cell 3 (interval of joining) ) L can be, for example, 400-800 mm. By setting the size of the cell 3 within the above range, the laying operation is facilitated. When the length of one side of the cell 3 exceeds 800 mm, a considerable force is required for handling, and when the length of one side of the cell 3 is smaller than 400 mm, it becomes difficult to fill the cell with concrete or mortar. As a whole, the speed of building a dike is reduced. As concrete or mortar, for example, it is preferable from the viewpoint of workability to use one having a slump of about 8 cm.
By making the cell size larger than before, it is possible to work quickly in filling concrete or mortar. When the filling material is crushed stone or earth as in the conventional three-dimensional cell structure 1, if the cell 3 is large, the strength of the structure is lowered, which is disadvantageous, but the present invention does not have this problem. In addition, when the cell 3 is large, there is an advantage that it is easy to construct even when the slope 20 is a curved surface and is easy to carry into the site.
また、このハニカム状３次元立体セル構造体１のブロックは、擁壁構造体１０の幅方向と直交する方向（縦方向）に２〜３個、擁壁構造体１０の幅方向（横方向）に５〜８個のセル３を有する。好ましいセル３の数は、縦方向に２個、横方向に５個である（図２参照）。立体セル構造体１の展張後の大きさ（セルの対角線方向の長さ）は、好ましくは縦３００〜７００ｍｍ、横３００〜７００ｍｍである。
所望の長さ（横方向）の擁壁構造体１０を構築するためには、前記ブロックを複数、隣接して敷設し、必要により隣接するブロック同士を、連結具等を用いて連結すればよい。複数のブロックの敷設の仕方により、線状、半円状の擁壁構造体１０を構築することができる。
また、所望の高さ（縦方向）の擁壁構造体１０を構築するためには、前記ブロックを複数、積層して敷設すればよい。下段となるブロック打設後、引き続いて上段となるブロックを打設可能である。通常、1日あたり３段程度まで敷設可能である。必要により各段のブロック同士を縦に連結する鉄筋を設置してもよい。
The honeycomb-shaped three-dimensional three-dimensional cell structure 1 has two to three blocks in the direction (vertical direction) orthogonal to the width direction of the retaining wall structure 10 and the width direction (lateral direction) of the retaining wall structure 10. 5 to 8 cells 3. The preferred number of cells 3 is 2 in the vertical direction and 5 in the horizontal direction (see FIG. 2). The size of the three-dimensional cell structure 1 after stretching (the length in the diagonal direction of the cell) is preferably 300 to 700 mm in length and 300 to 700 mm in width.
In order to construct the retaining wall structure 10 having a desired length (lateral direction), a plurality of the blocks may be laid adjacent to each other, and the adjacent blocks may be connected using a connector or the like if necessary. . A linear or semicircular retaining wall structure 10 can be constructed depending on the way of laying a plurality of blocks.
Moreover, in order to construct the retaining wall structure 10 having a desired height (vertical direction), a plurality of the blocks may be laminated and laid. After the lower block is placed, the upper block can be subsequently placed. Usually, it can be laid up to about 3 levels per day. You may install the reinforcing bar which connects the block of each step | paragraph vertically if necessary.
そして本発明の擁壁構造体１０では、後方の法面２０との間に排水層１１を有している（図１参照）。法面２０は、河川、池、湖等の護岸等の斜面であり、積層された立体セル構造体１と法面２０との間に排水層１１を設けることによって、擁壁構造体１０の排水性を向上することができる。
排水層１１は、特に限定されるものではないが、例えば法面２０と立体セル構造体１との間に例えば砕石などが充填されることにより形成される。このような砕石の粒径としては特に限定されるものではないが、例えば１〜１０ｃｍ、好ましくは２〜５ｃｍである。
And in the retaining wall structure 10 of this invention, it has the drainage layer 11 between back slopes 20 (refer FIG. 1). The slope 20 is a slope such as a bank, river, pond, lake, etc., and the drainage layer 11 is provided between the stacked three-dimensional cell structure 1 and the slope 20 to thereby drain the retaining wall structure 10. Can be improved.
The drainage layer 11 is not particularly limited, and is formed by, for example, filling crushed stone or the like between the slope 20 and the three-dimensional cell structure 1. Although it does not specifically limit as a particle size of such a crushed stone, For example, it is 1-10 cm, Preferably it is 2-5 cm.
さらに、本発明の擁壁構造体１０では、立体セル構造体１を貫通するように、排水管１２が設けられている（図１参照）。この排水管１２は前記排水層１１と連通している。これにより排水層１１からの水を、排水管１２を通じて外部に排出することができ、擁壁構造体１０の排水性を向上することができる。
排水管１２は、排水の目的を考えると、排水層１１側から擁壁構造体１０の外側に向かって水平〜下向きになるように配されている。
排水管１２が貫通される位置は特に限定されるものではない。図１に示す例では、２つのセル３を貫通するように配されているが、例えば、図３に示すように、立体セル構造体１の幅方向で１つのセル３を貫通するように配してもよい。すなわち立体セル構造体１の幅方向で最も狭い箇所に排水管１２を配することで、排水管１２の長さを短くすることができ、コスト削減に寄与する。
排水管１２の材質としては特に限定されるものではないが、例えば、ポリエチレン、ポリ塩化ビニル等が挙げられる。また、排水管１２の径（内径）としては特に限定されるものではないが、例えば５ｃｍ程度である。
さらに、排水管１２は、逆止弁を有することが好ましい。これにより水が排水層１１側に逆流することが防止される。
Furthermore, in the retaining wall structure 10 of the present invention, a drain pipe 12 is provided so as to penetrate the three-dimensional cell structure 1 (see FIG. 1). The drain pipe 12 communicates with the drain layer 11. Thereby, the water from the drainage layer 11 can be discharged | emitted through the drainage pipe 12, and the drainage property of the retaining wall structure 10 can be improved.
Considering the purpose of drainage, the drainage pipe 12 is arranged so as to be horizontal to downward from the drainage layer 11 side toward the outside of the retaining wall structure 10.
The position through which the drain pipe 12 passes is not particularly limited. In the example shown in FIG. 1, the two cells 3 are arranged so as to penetrate, but for example, as shown in FIG. 3, the three-dimensional cell structure 1 is arranged so as to penetrate one cell 3 in the width direction. May be. That is, by arranging the drain pipe 12 at the narrowest portion in the width direction of the three-dimensional cell structure 1, the length of the drain pipe 12 can be shortened, which contributes to cost reduction.
Although it does not specifically limit as a material of the drainage pipe 12, For example, polyethylene, polyvinyl chloride, etc. are mentioned. Further, the diameter (inner diameter) of the drain pipe 12 is not particularly limited, but is about 5 cm, for example.
Furthermore, the drain pipe 12 preferably has a check valve. This prevents water from flowing back to the drainage layer 11 side.
本発明の擁壁構造体の構築工法は、以下の工程を含む。すなわち、
（１）幅方向に並設された複数の長辺状の樹脂又は繊維シートを互い所定の間隔で繰り返し部分的に接合し、これを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複数のブロックを用意する。
（２）コンクリート又はモルタルを用意する。
（３）立体セル構造体の所定の位置に立体セル構造体を貫通する排水管を擁壁と直角方向に取り付ける。
（４）立体セル構造体の第１のブロックを、補助枠を用いて展張しつつ所定の設置箇所に敷設する（図３参照）。
（５）展張された立体セル構造体の各セル内に、コンクリート又はモルタルを充填し、補助枠を外す（図４参照）。
（６）立体セル構造体と後方の法面の間に砕石を充填する。
（７）立体セル構造体の第２のブロックを、補助枠を用いて展張しつつ敷設する（図５参照）。
（８）立体セル構造体の所望の数のブロックのコンクリート又はモルタルの充填が完了するまで、工程（４）〜（７）を繰り返して、所望の段数の立体セル構造体のブロックを積み重ねる（図６参照）。
The construction method of the retaining wall structure of the present invention includes the following steps. That is,
(1) A plurality of long-sided resin or fiber sheets arranged side by side in the width direction are partially joined to each other at a predetermined interval, and then expanded in a direction perpendicular to the width direction to form a honeycomb-like cell A plurality of blocks of the honeycomb-shaped three-dimensional three-dimensional cell structure that forms the film is prepared.
(2) Prepare concrete or mortar.
(3) A drain pipe penetrating the three-dimensional cell structure is attached to a predetermined position of the three-dimensional cell structure in a direction perpendicular to the retaining wall.
(4) The first block of the three-dimensional cell structure is laid at a predetermined installation location while being extended using an auxiliary frame (see FIG. 3).
(5) Each cell of the expanded three-dimensional cell structure is filled with concrete or mortar, and the auxiliary frame is removed (see FIG. 4).
(6) The crushed stone is filled between the three-dimensional cell structure and the rear slope.
(7) The second block of the three-dimensional cell structure is laid while being extended using an auxiliary frame (see FIG. 5).
(8) The steps (4) to (7) are repeated until the filling of the desired number of blocks of the three-dimensional cell structure with concrete or mortar is completed, and the blocks of the three-dimensional cell structure having the desired number of steps are stacked (see FIG. 6).
以上、本発明の実施の形態について説明してきたが、本発明はこれに限定されるものではなく、発明の趣旨を逸脱しない範囲で適宜変更可能である。 Although the embodiment of the present invention has been described above, the present invention is not limited to this, and can be appropriately changed without departing from the spirit of the invention.
本発明による擁壁構造体を用いることで、強度及び排水性が向上したものとなり、河川、池、湖の護岸等、擁壁構造体として広く利用することができる。 By using the retaining wall structure according to the present invention, strength and drainage are improved, and it can be widely used as a retaining wall structure such as a river, a pond, a lake revetment and the like.
１ ハニカム状３次元立体セル構造体（立体セル構造体）
２ 樹脂又は繊維シート
３ セル
４ 中詰め材
１０ 擁壁構造体
１１ 排水層
１２ 排水管
２０ 法面
1 Honeycomb three-dimensional cell structure (3D cell structure)
2 Resin or fiber sheet 3 Cell 4 Filling material 10 Retaining wall structure 11 Drainage layer 12 Drainage pipe 20 Slope
Claims (5)
前記中詰め材がコンクリート又はモルタルであり、
後方の法面との間に排水層を有し、
前記排水層に連通し前記立体セル構造体を貫通する排水管を有することを特徴とする擁壁構造体。 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 In each cell of the honeycomb-shaped three-dimensional three-dimensional cell structure forming the cell, a plurality of blocks formed by filling the filling material are stacked one above the other,
The filling material is concrete or mortar,
A drainage layer between the rear slope and
A retaining wall structure having a drain pipe communicating with the drainage layer and penetrating the three-dimensional cell structure.
幅方向と直交する方向のセルの数が２である、請求項１〜３のいずれか一項に記載の擁壁構造体。 The length of one piece of the three-dimensional cell structure is 400 to 800 mm, the height is 200 to 400 mm,
The retaining wall structure according to any one of claims 1 to 3, wherein the number of cells in a direction orthogonal to the width direction is two.
（１）幅方向に並設された複数の長辺状の樹脂又は繊維シートを互い所定の間隔で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複数のブロックを用意し、
（２）コンクリート又はモルタルを用意し、
（３）前記立体セル構造体の所定の位置に該立体セル構造体を貫通する排水管を擁壁と略直角方向に取り付け、
（４）前記立体セル構造体の第１のブロックを、補助枠を用いて展張しつつ所定の設置箇所に敷設し、
（５）該展張された立体セル構造体の各セル内に、前記コンクリート又はモルタルを充填し、前記補助枠を外し、
（６）前記立体セル構造体と後方の法面の間に砕石を充填し、
（７）前記立体セル構造体の第２のブロックを、補助枠を用いて展張しつつ敷設し、
（８）前記立体セル構造体の所望の数のブロックの前記コンクリート又はモルタルの充填が完了するまで、工程（４）〜（７）を繰り返して、所望の段数の前記立体セル構造体のブロックを積み重ねる、を含む擁壁構造体の構築工法。 The following steps:
(1) A plurality of long-sided resins or fiber sheets arranged side by side in the width direction are partially joined repeatedly at a predetermined interval, and this is stretched in a direction perpendicular to the width direction to form a honeycomb-like Preparing a plurality of blocks of a honeycomb-shaped three-dimensional three-dimensional cell structure forming cells;
(2) Prepare concrete or mortar,
(3) At a predetermined position of the three-dimensional cell structure, a drain pipe penetrating the three-dimensional cell structure is attached in a direction substantially perpendicular to the retaining wall,
(4) The first block of the three-dimensional cell structure is laid at a predetermined installation location while being extended using an auxiliary frame,
(5) In each cell of the expanded three-dimensional cell structure, the concrete or mortar is filled, and the auxiliary frame is removed.
(6) A crushed stone is filled between the three-dimensional cell structure and the rear slope.
(7) Laying out the second block of the three-dimensional cell structure using an auxiliary frame,
(8) Steps (4) to (7) are repeated until the filling of the desired number of blocks of the three-dimensional cell structure with the concrete or mortar is completed, and the blocks of the three-dimensional cell structure having the desired number of steps are obtained. Retaining wall structure construction method including stacking.
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