JP3431783B2 - Protection structure for slopes and walls - Google Patents
Protection structure for slopes and wallsInfo
- Publication number
- JP3431783B2 JP3431783B2 JP33495196A JP33495196A JP3431783B2 JP 3431783 B2 JP3431783 B2 JP 3431783B2 JP 33495196 A JP33495196 A JP 33495196A JP 33495196 A JP33495196 A JP 33495196A JP 3431783 B2 JP3431783 B2 JP 3431783B2
- Authority
- JP
- Japan
- Prior art keywords
- frame fence
- lattice frame
- wall portion
- bottom wall
- geotextile
- 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
- 239000000463 material Substances 0.000 claims description 57
- 230000003014 reinforcing effect Effects 0.000 claims description 32
- 239000004746 geotextile Substances 0.000 claims description 26
- 239000011435 rock Substances 0.000 claims description 25
- 239000004745 nonwoven fabric Substances 0.000 claims description 22
- 239000002657 fibrous material Substances 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 230000001788 irregular Effects 0.000 claims description 2
- 239000002689 soil Substances 0.000 description 23
- 238000010276 construction Methods 0.000 description 21
- 239000010410 layer Substances 0.000 description 14
- 239000007921 spray Substances 0.000 description 13
- 239000004744 fabric Substances 0.000 description 9
- 241000196324 Embryophyta Species 0.000 description 8
- 239000004567 concrete Substances 0.000 description 7
- 239000000945 filler Substances 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000005507 spraying Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 229920002472 Starch Polymers 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000012010 growth Effects 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 230000036961 partial effect Effects 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- 235000019698 starch Nutrition 0.000 description 3
- 239000002759 woven fabric Substances 0.000 description 3
- 240000000161 Lagerstroemia indica Species 0.000 description 2
- 235000000283 Lagerstroemia parviflora Nutrition 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000035784 germination Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000186361 Actinobacteria <class> Species 0.000 description 1
- 235000015701 Artemisia arbuscula Nutrition 0.000 description 1
- 235000002657 Artemisia tridentata Nutrition 0.000 description 1
- 235000003261 Artemisia vulgaris Nutrition 0.000 description 1
- 240000006891 Artemisia vulgaris Species 0.000 description 1
- 241000218645 Cedrus Species 0.000 description 1
- 235000016381 Cephalotaxus harringtonia Nutrition 0.000 description 1
- 244000077190 Cephalotaxus harringtonia Species 0.000 description 1
- 241000218691 Cupressaceae Species 0.000 description 1
- 235000010099 Fagus sylvatica Nutrition 0.000 description 1
- 240000000731 Fagus sylvatica Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 241000238633 Odonata Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000219000 Populus Species 0.000 description 1
- 241000208422 Rhododendron Species 0.000 description 1
- 241000124033 Salix Species 0.000 description 1
- 244000071131 Salix caprea Species 0.000 description 1
- 235000000516 Salix caprea Nutrition 0.000 description 1
- 241001104043 Syringa Species 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- -1 seeds Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、格子枠柵を用いた
法面、壁面等の保護構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protection structure for slopes, wall surfaces, etc. using a lattice frame fence.
【０００２】[0002]
【従来の技術】岩盤法面、コンクリート・モルタル吹付
法面、擁壁やダム等のコンクリート構造物の壁面等は、
景観保全上の問題が多いため、植生による保護・緑化の
導入が考えられている。特開平４−２１３６２５号公報
には、鉄筋格子製の傾斜した前壁部と水平な底壁部とか
らなる格子枠柵を法面の前方に設置するとともに、格子
枠柵の底壁部の下に補強フリースを敷き、格子枠柵の前
壁部の後面と底壁部の上面とに緑化用シートを敷き、格
子枠柵と法面との間に盛土材を充填し、これらの工程を
下から上へ繰り返して多段に構築した法面の保護構造が
開示されている。この保護構造は、急勾配でも施工で
き、施工効率が良い等の優れた点を持っている。2. Description of the Related Art Rock slopes, concrete / mortar spray slopes, walls of concrete structures such as retaining walls and dams are
Since there are many problems in landscape conservation, the introduction of protection and greening by vegetation is considered. In Japanese Patent Laid-Open No. 4-213625, a grid frame fence composed of an inclined front wall part and a horizontal bottom wall part made of a reinforcing bar grid is installed in front of the slope, and under the bottom wall part of the grid frame fence. Place a reinforcing fleece on top of the grid frame, lay a greening sheet on the back of the front wall of the lattice frame fence and on the top of the bottom wall, and fill the space between the lattice frame fence and the slope with embankment material. From the top to the top, the protection structure of the slope constructed in multiple stages is disclosed. This protective structure has the advantages that it can be installed even on steep slopes and that construction efficiency is good.
【０００３】上記の保護構造において、補強フリース
（強化部材）は、底壁部を越えて盛土材中に広がり、格
子枠柵を盛土材に係留するとともに、盛土材を安定化さ
せる作用を奏する。このため、底壁部は短くすることが
でき、格子枠柵の運搬が容易となる。このように格子枠
柵の底壁部の下に敷く強化部材としては、「可撓性を有
するプラスチック網状物」（特開平３−５１４２３号公
報）、「高分子材料を格子状に成形したファイバーグリ
ッド、ポリマーグリッド、ジオネット、ジオファブリッ
ク等周知慣用のジオテキスタイル」（特開平３−５９２
２０号公報）、「合成樹脂を含浸させたガラス繊維等か
らなるネット状のジオテキスタイル」（特願平５−１３
６５６３）等が知られている。In the above-mentioned protective structure, the reinforcing fleece (reinforcing member) spreads over the bottom wall portion and extends into the embankment material, and serves to anchor the grid frame fence to the embankment material and stabilize the embankment material. Therefore, the bottom wall can be shortened, and the lattice frame fence can be easily transported. As the reinforcing member laid under the bottom wall portion of the lattice frame fence as described above, "flexible plastic mesh" (Japanese Patent Laid-Open No. 3-51423), "fiber formed by polymer material in lattice form" Commonly used geotextiles such as grids, polymer grids, geonets, geofabrics "(Japanese Patent Laid-Open No. 3-592)
20), "Net-shaped geotextile made of glass fiber impregnated with synthetic resin" (Japanese Patent Application No. 5-13).
6563) and the like are known.
【０００４】ここで、「ジオテキスタイル」の語は、
土、岩等とともに使用する補強部材の一種を指すが、そ
の定義（特に種類の範囲）には広狭がある。狭義のジオ
テキスタイルは、繊維材料よりなる編物、織布、不織
布、これらの組合せ等を意味するが、広義のジオテキス
タイルは、狭義のジオテキスタイルのみならず、非繊維
材料（樹脂等）よりなるジオネット、ジオグリッド、こ
れらの組合せ等のジオテキスタイル関連製品も含む。上
記の公知刊行物では、ジオテキスタイルの語を広義で使
用しているが、本明細書では、ジオテキスタイルの語を
狭義で使用するものとする。Here, the term "geotextile" is
It refers to a type of reinforcing member used with soil, rock, etc., but its definition (particularly the range of types) is wide and narrow. Geotextile in the narrow sense means knitting, woven fabric, non-woven fabric made of fiber materials, combinations thereof, etc., but geotextile in the broad sense means not only geotextile in the narrow sense but also geonet, geonet made of non-fiber materials (resin etc.). Includes geotextile related products such as grids and combinations of these. In the above-mentioned publicly known publications, the term geotextile is used in a broad sense, but in this specification, the term geotextile is used in a narrow sense.
【０００５】[0005]
【発明が解決しようとする課題】繊維材料よりなる編
物、織布、不織布等のジオテキスタイルは、軽量かつ柔
軟であるにも拘らず、強度が高いという特長がある。特
に、不織布には厚手で高強度の製品が存在する。また、
繊維材料の毛細管現象により、盛土材に含まれた水を正
面に導いて排水する機能も果たす。しかし、ジオテキス
タイル（特に高強度の不織布）は、高価であるため、施
工費がかさむという問題があった。Geotextiles such as knitted fabrics, woven fabrics, and non-woven fabrics made of a fibrous material have a feature that they are high in strength although they are lightweight and flexible. In particular, there are thick and high-strength non-woven fabric products. Also,
Due to the capillary phenomenon of the fiber material, it also functions to guide the water contained in the embankment material to the front and drain it. However, geotextiles (particularly high-strength non-woven fabrics) are expensive, so that there is a problem that the construction cost is high.
【０００６】一方、非繊維材料よりなるジオネット、ジ
オグリッド等のジオテキスタイル関連製品は、比較的安
価であるため、近年使用量が増えている。しかし、ジオ
テキスタイルに比べると、スプリングバック（製造後の
ロール巻により巻癖が付くため、施工現場で広げると弾
性的に丸まろうとする。）が生じて取り扱いにくいと
か、強度も下回るとか、排水機能がほとんど無いため、
盛土材が含水で軟弱化しやすいとかという問題があっ
た。On the other hand, geotextile products such as geonet and geogrid, which are made of non-fiber materials, are relatively inexpensive and have been used in recent years. However, compared to geotextiles, springback (because it has a curl due to the roll winding after manufacturing, it tends to elastically roll up when unfolded at the construction site), which makes it difficult to handle, has less strength, and has a drainage function. Because there is almost no
There is a problem that the embankment material is hydrated and easily softens.
【０００７】そこで、本発明の目的は、急勾配でも施工
でき、施工効率が良い等の優れた点を持つ格子枠柵を用
いた法面、壁面等の保護構造において、格子枠柵を盛土
材に係留する強化部材としてのジオテキスタイルの使用
量を節約して、施工費を低減することができ、それにも
拘らず、全段にジオテキスタイルを使用したときに近い
保護構造全体の強度と排水機能とを得ることができる保
護構造を提供することにある。Therefore, an object of the present invention is to construct a grid frame fence as an embankment material in a protective structure such as slopes and wall surfaces using a grid frame fence which has the advantages that it can be constructed even on a steep slope and that construction efficiency is excellent. It is possible to save the amount of geotextile used as a reinforcing member moored to the building and reduce the construction cost. Nevertheless, the strength and drainage function of the entire protective structure, which is close to when the geotextile is used in all stages, can be achieved. It is to provide a protection structure that can be obtained.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、本発明では、鉄筋格子製の傾斜した前壁部と水平な
底壁部とからなり法面、壁面等の保護対象面の前方に設
置された格子枠柵と、前記格子枠柵の底壁部の下に敷か
れた強化部材と、格子枠柵と保護対象面との間に充填さ
れた盛土材、岩石等の充填材とにより一つの段が構成さ
れ、該段が下から上へ積まれることにより多段に構築さ
れた法面、壁面等の保護構造において、前記格子枠柵の
底壁部の下に敷かれるとともに底壁部の後端を越えて保
護対象面側へ広げられる強化部材として、繊維材料より
なるジオテキスタイルと非繊維材料よりなるジオテキス
タイル関連製品とを一段毎、複数段毎又は不規則段毎に
交互に用いたことを特徴とする。In order to achieve the above object, the present invention comprises a sloped front wall portion and a horizontal bottom wall portion made of a reinforced lattice and the front of a surface to be protected such as a slope or a wall surface. And a reinforcing member laid under the bottom wall of the lattice frame fence, a filling material filled between the lattice frame fence and the surface to be protected, a filling material such as rocks, and the like. by one of the stages are configured, has been slopes constructed in multiple stages by stepped is loaded from bottom to top, in the protective structure such as a wall, of the lattice frame fence
It is laid under the bottom wall and is kept over the rear edge of the bottom wall.
As a reinforcing member that can be spread toward the surface to be protected, a geotextile made of a fibrous material and a geotextile-related product made of a non-fibrous material are alternately used in every stage, every plural stages or every irregular stage.
【０００９】ここで、保護対象面の一つである「法面」
の種類は、特に限定されず、岩盤法面、コンクリート・
モルタル吹付法面、切土法面、盛土材法面等を例示でき
る。同じく「壁面」の種類も、特に限定されず、擁壁や
ダム等のコンクリート構造物の壁面を例示できる。Here, a "slope" which is one of the surfaces to be protected
There is no particular limitation on the type of rock slope, concrete,
Examples include mortar spray slopes, cut slopes, and embankment slopes. Similarly, the type of "wall surface" is not particularly limited, and examples thereof include a retaining wall and a wall surface of a concrete structure such as a dam.
【００１０】「充填材」としては、盛土材、岩石、それ
らの混合、それらとクリンカアッシュ、フライアッシュ
又はアスファルト廃材との混合等を例示できる。盛土材
は、施工現場の土が好ましいが、他所から運んだ土でも
よい。岩石の寸法は、特に限定されず、大型の破砕岩石
から２〜７５ｍｍ程度の礫まで含む。Examples of the "filler" include embankment material, rock, a mixture thereof, and a mixture thereof with clinker ash, fly ash or asphalt waste material. The embankment material is preferably soil at the construction site, but may be soil carried from another place. The size of rock is not particularly limited, and includes large crushed rock to gravel of about 2 to 75 mm.
【００１１】「繊維材料よりなるジオテキスタイル」と
しては、繊維材料よりなる編物、織布、不織布、これら
の組合せ等を例示できる。特に、厚手で高強度の不織布
が好ましい。ジオテキスタイルは、格子枠柵を盛土材に
係留する作用と、盛土材を安定化させる作用と、排水作
用とを果たす。Examples of the "geotextile made of a fiber material" include a knitted fabric, a woven fabric, a non-woven fabric made of a fiber material, and combinations thereof. Particularly, a thick and high-strength nonwoven fabric is preferable. The geotextile has a function of mooring the grid frame fence to the embankment material, a function of stabilizing the embankment material, and a drainage function.
【００１２】「非繊維材料よりなるジオテキスタイル関
連製品」としては、押出された樹脂ストランドを網目状
に融着させてなるジオネット、孔あき樹脂シートを延伸
成形してなるジオグリッド等を例示できる。特に、延伸
成形により強度が増すジオグリッドが好ましい。ジオグ
リッドには一軸延伸と二軸延伸とがある。ジオテキスタ
イル関連製品は、格子枠柵を盛土材に係留する作用と、
盛土材を安定化させる作用とを果たす。Examples of the "geotextile-related product made of a non-fiber material" include a geonet formed by fusion-bonding extruded resin strands in a mesh shape, a geogrid formed by stretching a perforated resin sheet, and the like. In particular, geogrid whose strength is increased by stretch molding is preferable. Geogrid includes uniaxial stretching and biaxial stretching. Geotextile-related products have the function of mooring the lattice frame fence to the embankment material,
It serves to stabilize the embankment material.
【００１３】強化部材は、その端部を保護対象面に固定
することもでき、この場合の強化部材は、次のアンカー
と同様の作用を奏する。The reinforcing member may have its end fixed to the surface to be protected, and in this case, the reinforcing member has the same function as the next anchor.
【００１４】また、保護対象面にアンカーを固定し、該
アンカーに格子枠柵を連結材により連結することで、格
子枠柵の移動を強力に防止することもできる。アンカー
の形状や長さは、保護対象面に応じて適宜決定できる。
連結材は、格子枠柵をアンカーに連結保持するのに十分
高強度のものであれば、特に限定されず、金属ワイヤ、
金属鎖、合成樹脂ロープ、ガラス繊維ロープ等を例示で
きる。アンカーと連結材との接続の仕方は、アンカーに
係止部を設け、連結材の一端を該係止部に直接的に接続
する態様でも、保護対象面に沿って延びる取付材をアン
カーに固定し、連結材の一端を該取付材に接続すること
によりアンカーに間接的に接続する態様でもよい。取付
材としては、棒材、管材、アングル材、レール材等を例
示できる。Further, by fixing the anchor to the surface to be protected and connecting the lattice frame fence to the anchor by a connecting member, the movement of the lattice frame fence can be strongly prevented. The shape and length of the anchor can be appropriately determined according to the surface to be protected.
The connecting material is not particularly limited as long as it is sufficiently strong to connect and hold the lattice frame fence to the anchor, and the metal wire,
Examples include metal chains, synthetic resin ropes, glass fiber ropes, and the like. As for the method of connecting the anchor and the connecting member, even if the anchor is provided with the engaging portion and one end of the connecting member is directly connected to the engaging portion, the attachment member extending along the surface to be protected is fixed to the anchor. However, it is also possible to indirectly connect to the anchor by connecting one end of the connecting member to the mounting member. Examples of the attachment material include a rod material, a pipe material, an angle material, and a rail material.
【００１５】また、格子枠柵の前壁部の後面と底壁部の
上面とに緑化用シートを配設することが好ましい。この
緑化用シートは、充填材のこぼれ落ちやエロージョンを
防止でき、植物の成長の妨げにならず、透水性のあるも
のであれば特に限定されず、目のやや粗い布、水溶性紙
等を例示できる。特に好ましいのは、土壌中の雑菌等の
微生物（土壌中の雑菌はバクテリアといわれるもので、
細菌、糸状菌、放線菌等がある。）により分解されて消
滅する生分解性材料からなる緑化用シートである。生分
解性材料としては、デンプン系化合物、蛋白質系化合
物、ビニールエマルジョン系化合物、ポリ乳酸系化合
物、デンプンと樹脂とのブレンド等を例示でき、これら
から選ばれる少なくとも１種を使用できる。生分解性材
料からなる緑化用シートは、種子が発芽・生育して施工
面が安定した後は、土壌中の微生物により分解され、や
がて形状を維持できなくなり消滅する。Further, it is preferable to dispose green sheets on the rear surface of the front wall portion of the lattice frame fence and the upper surface of the bottom wall portion. This sheet for greening is not particularly limited as long as it can prevent spillage and erosion of the filler, does not hinder the growth of plants, and is water permeable, and has a slightly coarse cloth, water-soluble paper, etc. it can. Particularly preferred are microorganisms such as miscellaneous bacteria in soil (miscellaneous bacteria in soil are called bacteria,
There are bacteria, filamentous fungi, actinomycetes, etc. ) Is a sheet for revegetation made of a biodegradable material that is decomposed and disappears. Examples of biodegradable materials include starch-based compounds, protein-based compounds, vinyl emulsion-based compounds, polylactic acid-based compounds, blends of starch and resin, and at least one selected from these can be used. The greening sheet made of a biodegradable material is decomposed by microorganisms in the soil after the seed germinates and grows and the construction surface is stabilized, and eventually loses its shape and disappears.
【００１６】また、格子枠柵の前壁部を通して現れる充
填材又は緑化用シートに土、種子等を含む植生材を付着
させることが好ましい。この植生材としては、人工土
壌、種子等の混合物を吹付けてなる吹付層や、袋に土、
種子等を含ませてなる土嚢等を例示できる。吹付層とし
ては、人工土壌、種子、肥料、養生剤（吹付層の安定固
着を図る凝結剤）、土壌活性剤（微生物の活性化を図
る）等の素材を水にといて吹付けるいわゆる「客土吹付
工法」による厚さ約１０〜３０ｍｍの吹付層や、同様の
素材を乾式で吹付けるいわゆる「厚層基材吹付工法」に
よる厚さ約３０〜１００ｍｍ（又はそれ以上におよぶ）
吹付層を例示できる。種子は施工現場の土、施工季節、
気象条件等に応じて適宜選択される。なお、吹付層は単
層にしても複数層にしてもよい。Further, it is preferable to attach a vegetation material containing soil, seeds or the like to the filler or the greening sheet appearing through the front wall of the lattice frame fence. As the vegetation material, artificial soil, a spray layer formed by spraying a mixture of seeds, soil in a bag,
An example is a sandbag containing seeds and the like. The spray layer is a so-called "customer" that sprays materials such as artificial soil, seeds, fertilizers, curing agents (coagulants to stabilize the spray layer) and soil activators (to activate microorganisms) into water. Approximately 30 to 100 mm (or more) with a spray layer with a thickness of about 10 to 30 mm by the "soil spraying method" or the so-called "thick layer base material spraying method" with which the same material is sprayed dry.
A spray layer can be illustrated. Seeds are the soil of the construction site, the construction season,
It is appropriately selected according to weather conditions. The spray layer may be a single layer or multiple layers.
【００１７】また、格子枠柵の前壁部が底壁部となす傾
斜角は、全段で一定でもよいが、一段毎に又は複数段毎
に上段側ほど大きく設定することもできる。具体的に
は、次の態様（ａ）（ｂ）（ｃ）を例示できる。
（ａ）一段目（最下段）の前壁部の傾斜角を例えば６０
度とし、二段目以上の前壁部の傾斜角を順に６２度、６
４度、６６度、６８度…とする等、一段毎に０．５〜１
０度ずつ大きくなるよう設定した態様。傾斜角の増加分
は、各段間で一定でもよいし、途中で変化させてもよい
（例えば同例で、６０度、６４度、６７度、６９度、７
０度…とする）。
（ｂ）一段目〜三段目の前壁部の傾斜角を例えば６０度
とし、四段目〜六段目の前壁部の傾斜角を６４度とする
等、複数段毎に１〜１０度ずつ大きくなるよう設定した
態様。傾斜角の増加分は、各段間で一定でもよいし、途
中で変化させてもよい。
（ｃ）上記態様（ａ）と態様（ｂ）とを混在させた態
様。Further, the inclination angle formed by the front wall portion of the lattice frame fence and the bottom wall portion may be constant in all stages, but may be set larger for each stage or for every plurality of stages toward the upper stage side. Specifically, the following aspects (a), (b) and (c) can be exemplified. (A) The inclination angle of the front wall portion of the first step (lowermost step) is, for example, 60
And the inclination angle of the front wall of the second step and above is 62 degrees and 6 degrees in order.
0.5 to 1 for each step, such as 4 degrees, 66 degrees, 68 degrees, etc.
A mode in which it is set to increase by 0 degrees. The increment of the tilt angle may be constant between the stages or may be changed in the middle (for example, in the same example, 60 degrees, 64 degrees, 67 degrees, 69 degrees, 7 degrees).
0 degrees ...) (B) The inclination angle of the front wall portions of the first to third steps is, for example, 60 degrees, and the inclination angle of the front wall portions of the fourth to sixth steps is 64 degrees. A mode in which it is set to increase gradually. The increment of the tilt angle may be constant between stages or may be changed midway. (C) A mode in which the mode (a) and the mode (b) are mixed.
【００１８】また、格子枠柵を構成する一部（例えば特
に強度が必要な部分）の鉄筋に、他の鉄筋より太いもの
を使用することもできる。これにより、鉄筋の一部が充
填材の圧力等によって正面側に湾曲変形する現象を防止
することができる。It is also possible to use, as a part of the rebars constituting the lattice frame fence (for example, a part requiring particularly high strength), one thicker than the other rebars. As a result, it is possible to prevent the phenomenon that a part of the reinforcing bar is bent and deformed to the front side due to the pressure of the filling material or the like.
【００１９】[0019]
《第一実施形態》図１〜図３は、本発明の第一実施形態
に係る岩盤法面の保護構造を示し、同保護構造は以下の
工程で構築されている。なお、岩盤法面１は例えば約６
０度の急斜面である。<< First Embodiment >> FIGS. 1 to 3 show a rock slope protection structure according to a first embodiment of the present invention, and the protection structure is constructed by the following steps. The rock slope 1 is, for example, about 6
It is a steep slope of 0 degrees.
【００２０】［格子枠柵の設置工程］ 一段目において
は、図４に示すように、岩盤法面１の下端前方の用地２
に強化部材のジオテキスタイルとしての厚手の不織布３
ａを敷き、不織布３ａの上に必要数の格子枠柵５を横に
並べて設置する。図１に示すように、格子枠柵５は傾斜
した前壁部６と水平な底壁部７とを備え、製造方法の一
例としては、鉄筋を縦横格子状に溶接（具体的にはアー
ク溶接による溶着）してなる鉄筋格子をその中央部で折
曲して形成される。前壁部６の上端と底壁部７の後端と
の間をフック付き連結棒等で連結してもよい。不織布３
ａは、底壁部７の後端を越えて岩盤法面１側へ広げられ
る。１５は格子枠柵５の底壁部７を不織布３ａに止める
ための杭である。格子枠柵５の前壁部６と岩盤法面１と
の間隔は、特に限定されず、本実施形態では例えば約２
０００〜５０００ｍｍである。[Installation process of lattice frame fence] In the first stage, as shown in FIG. 4, the site 2 in front of the lower end of the rock slope 1
Thick non-woven fabric as a geotextile for reinforcement 3
a is laid and a required number of grid frame fences 5 are installed side by side on the non-woven fabric 3a. As shown in FIG. 1, the lattice frame fence 5 includes an inclined front wall portion 6 and a horizontal bottom wall portion 7. As an example of a manufacturing method, reinforcing bars are welded in a vertical and horizontal lattice shape (specifically, arc welding). It is formed by bending a reinforcing bar lattice formed by welding. The upper end of the front wall portion 6 and the rear end of the bottom wall portion 7 may be connected by a connecting rod with a hook or the like. Non-woven fabric 3
The a extends beyond the rear end of the bottom wall portion 7 toward the rock slope 1 side. Reference numeral 15 is a pile for fixing the bottom wall portion 7 of the lattice frame fence 5 to the nonwoven fabric 3a. The interval between the front wall portion 6 of the lattice frame fence 5 and the rock slope 1 is not particularly limited, and is about 2 in this embodiment, for example.
000 to 5000 mm.
【００２１】本実施形態において使用した格子枠柵５の
寸法等は次の通りであるが、例示にすぎず、この寸法等
は施工現場に応じて適宜変更されるものである。
前壁部６が底壁部７となす傾斜角： 約６０度
前壁部６の傾斜長： 約６００ｍｍ
底壁部７の奥行： 約６００ｍｍ
前壁部６及び底壁部７の左右長： 約２６００ｍｍ
鉄筋の直径： 約１０ｍｍ
鉄筋格子の格子ピッチ： １００〜３００ｍｍThe dimensions and the like of the lattice frame fence 5 used in the present embodiment are as follows, but they are merely examples, and the dimensions and the like are appropriately changed according to the construction site. Inclination angle formed by the front wall 6 and the bottom wall 7: about 60 degrees Inclination length of the front wall 6: about 600 mm Depth of the bottom wall 7: about 600 mm Horizontal length of the front wall 6 and the bottom wall 7: about 2600mm Reinforcing bar diameter: Approximately 10mm Reinforcing bar lattice pitch: 100-300mm
【００２２】［緑化用シート敷設工程］ 格子枠柵５の
前壁部６の後面と底壁部７の上面とに、目のやや粗い緑
化用シート８を敷く。緑化用シート８の上端を少し余ら
せて、前壁部６の前面に一時的に垂らしておくとよい
（図示略）。緑化用シート８は、特定の素材に限定され
ず、織布、不織布等を例示できる。[Greening Sheet Laying Step] On the rear surface of the front wall portion 6 and the upper surface of the bottom wall portion 7 of the lattice frame fence 5, a greening sheet 8 having slightly rough eyes is laid. It is advisable to leave the upper end of the greening sheet 8 slightly and hang it temporarily on the front surface of the front wall portion 6 (not shown). The greening sheet 8 is not limited to a particular material, and may be woven cloth, non-woven cloth, or the like.
【００２３】［盛土材充填工程］ 格子枠柵５と岩盤法
面１との間に現場の土等を利用して盛土材９を充填す
る。盛土材９を衝撃ローラー等で締め固める。余らせて
おいた前記緑化用シート８の上端を盛土材９の上面に被
せる。これで一段目が形成される。[Filling material filling step] Filling material 9 is filled between the lattice frame fence 5 and the rock slope 1 by using the soil at the site. The embankment material 9 is compacted with an impact roller or the like. The upper end of the leftover greening sheet 8 is covered on the upper surface of the embankment material 9. This forms the first stage.
【００２４】［多段繰り返し工程］ 盛土材９の上面に
対し、上記の格子枠柵の設置工程、緑化用シート敷設工
程、横鉄筋端部の折曲工程及び盛土材充填工程を行なっ
て、二段目を形成する。但し、二段目で敷く強化部材
は、図３に示すように、孔あき樹脂シートを一軸延伸成
形してなるジオグリッド３ｂ（ジオテキスタイル関連製
品）である。ジオグリッド３ｂは前述したようにスプリ
ングバックによって波打ちやすいので、その波打ちを杭
１４で押さえ付けることが好ましい。この作業を下から
上へ繰り返して、格子枠柵５及び盛土材９を多段に構築
する。強化部材としては、不織布３ａとジオグリッド３
ｂとを一段毎に交互に用いる。最上段の格子枠柵５で
は、前壁部６の縦鉄筋の上端を後側下方へ折り曲げて仕
上げる（図示略）。[Multi-stage repeating process] The above-mentioned lattice frame fence installation process, greening sheet laying process, horizontal rebar end bending process and embankment material filling process are performed on the upper surface of the embankment material 9 to form two steps. Form the eyes. However, as shown in FIG. 3, the reinforcing member laid in the second stage is a geogrid 3b (geotextile-related product) formed by uniaxially stretching a perforated resin sheet. Since the geogrid 3b is easily undulated by spring back as described above, it is preferable to press the undulation with the pile 14. This operation is repeated from bottom to top to construct the lattice frame fence 5 and the embankment material 9 in multiple stages. Non-woven fabric 3a and geogrid 3 are used as reinforcing members.
b and b are used alternately for each stage. In the uppermost lattice frame fence 5, the upper end of the vertical reinforcing bar of the front wall portion 6 is bent downward toward the rear side for finishing (not shown).
【００２５】［吹付層形成工程］ 格子枠柵５の前壁部
６の鉄筋格子を通して現れる緑化用シート８の前面に、
種子及び人工土壌を含む吹付層１６を吹付形成する。本
実施形態では、前記「厚層基材吹付工法」により厚さ約
６０ｍｍの吹付層１６を形成した。[Blowing layer forming process] On the front surface of the greening sheet 8 that appears through the reinforcing bar lattice of the front wall portion 6 of the lattice frame fence 5,
The spray layer 16 including the seed and the artificial soil is spray-formed. In this embodiment, the spray layer 16 having a thickness of about 60 mm was formed by the "thick layer base material spraying method".
【００２６】［植生部材装着工程］ 吹付層１６及び植
生緑化用シート８の所々に貫通孔を設け、該貫通孔を通
して盛土材９に植生部材１０を所要の角度で打込んだり
差込んだりして装着する。植生部材１０は生分解性材料
により形成された両端の開口した筒体であり、その筒壁
には略全長・全周にわたって分散する多数の透孔１１が
形成されている。この透孔１１は省略することもでき
る。生分解性材料としては、前に例示したものを使用で
き、ここではデンプンとポリエステル樹脂とのブレンド
が使用されている。図示例の植生部材１０の内径は約５
０ｍｍ、長さは約３００ｍｍである。植生部材１０の内
径は、植え付ける緑化用植物の種類により異なり、特に
限定されないが、２０〜１５０ｍｍが好ましい。植生部
材１０の長さは、伸長方向をどの程度コントロールする
かにより異なり、特に限定されないが、１００〜１００
０ｍｍが好ましい。植生部材１０の装着角度は、水平な
いし水平に対して８０度の範囲内で色々に設定できる。
なお、植生部材１０は、筒体に限定されず、半割筒壁又
はチャンネル壁を有するものでもよい。[Vegetation member mounting process] Through holes are provided in places of the spray layer 16 and the vegetation greening sheet 8, and the vegetation member 10 is driven or inserted into the embankment material 9 through the through holes at a required angle. Mounting. The vegetation member 10 is a cylindrical body formed of a biodegradable material and having both ends opened, and a large number of through holes 11 dispersed in substantially the entire length and the entire circumference are formed in the cylindrical wall. This through hole 11 can be omitted. As the biodegradable material, those exemplified above can be used, and here, a blend of starch and polyester resin is used. The inner diameter of the vegetation member 10 in the illustrated example is about 5
The length is 0 mm and the length is about 300 mm. The inner diameter of the vegetation member 10 varies depending on the type of the greening plant to be planted and is not particularly limited, but is preferably 20 to 150 mm. The length of the vegetation member 10 depends on how much the extension direction is controlled and is not particularly limited, but is 100 to 100.
0 mm is preferable. The mounting angle of the vegetation member 10 can be set variously within the range of horizontal or 80 degrees with respect to the horizontal.
In addition, the vegetation member 10 is not limited to a tubular body, and may have a half-split tubular wall or a channel wall.
【００２７】植生部材１０の内部の土に、緑化用植物１
２を種、苗又は挿し木の状態で植え付け又は植栽する。
緑化用植物１２の種類は、特に限定されず、ムクゲ、サ
ルスベリ、ヤナギ、ドロノキ、ツツジ、ウツゲ、イヌガ
ヤ、タイミンチク、カンノンチク、ネコヤナギ、マツ、
スギ、ヒノキ、ヤシャブシ、ブナ、サルスベリ、ポプラ
等を例示できる。植生部材１０の内部の深所に肥料、土
壌改良剤、成形剤等の機能剤を土と混合して装填し、緑
化用植物１２の成長の促進を図ることが好ましい。On the soil inside the vegetation member 10, the greening plant 1
Plant or plant 2 in the state of seeds, seedlings or cuttings.
The kind of the plant 12 for greening is not particularly limited, but it is not classified as sagebrush, crape myrtle, willow, dragonfly, azalea, syringa, inugaya, taiminchiku, cannonchiku, pussy willow, pine,
Examples include cedar, cypress, yashabushi, beech, crape myrtle, poplar and the like. It is preferable to promote the growth of the greening plant 12 by mixing a functional agent such as a fertilizer, a soil improving agent and a forming agent with soil and loading the mixture in a deep place inside the vegetation member 10.
【００２８】以上の工法で構築された岩盤法面１の保護
構造によれば、格子枠柵５を使用したことにより、急
勾配でも施工できる、施工に重機を必要とせず、人力
作業が可能であり、施工が簡単で、多くの人手を要し
ない、施工効率が良く、工期を短縮できる、カーブ
した岩盤法面１にも容易に対応できる、現場の土を盛
土材９として利用できる等の多くの効果が得られる。According to the protection structure of the rock slope 1 constructed by the above construction method, since the grid frame fence 5 is used, construction can be performed on a steep slope without requiring a heavy machine for construction and manual work is possible. Yes, the construction is simple, does not require a lot of manpower, the construction efficiency is good, the construction period can be shortened, the curved rock slope 1 can be easily dealt with, and the on-site soil can be used as the embankment material 9. The effect of is obtained.
【００２９】また、緑化用シート８の前面に種子及び人
工土壌を含む吹付層１６を吹付形成したので、単に緑化
用シートに種子を内蔵した場合と比べて、種子の発芽性
及び成長性が良く、洋芝等の種子の発芽による１次植生
を短期間で達成することができる。その後は、木本植物
が成長する。Further, since the spraying layer 16 containing seeds and artificial soil is formed on the front surface of the greening sheet 8 by spraying, the germination and growth of the seeds are improved as compared with the case where the seeds are simply incorporated in the greening sheet. , Primary vegetation by germination of seeds such as turf can be achieved in a short period of time. After that, woody plants grow.
【００３０】また、植生部材１０は、緑化用植物１２の
根系の周囲をなす土のエロージョンを防止する作用や、
その土に含まれた水を保持しする作用や、装着角度を変
えることで根系の伸長方向を制御する作用を奏する。し
かも、生分解性材料よりなる植生部材１０は、構築後数
ヶ月〜数年経過すると崩壊するため、根系の成長を妨げ
ることもない。Further, the vegetation member 10 has a function of preventing erosion of the soil surrounding the root system of the greening plant 12, and
It has the effect of holding the water contained in the soil and the effect of controlling the extension direction of the root system by changing the mounting angle. Moreover, since the vegetation member 10 made of a biodegradable material collapses several months to several years after construction, it does not hinder the growth of the root system.
【００３１】さらに、本実施形態では、強化部材とし
て、不織布３ａとジオグリッド３ｂとを一段毎に交互に
用いたので、全段に不織布を使用したときに近い保護構
造全体の強度と排水機能とを得ることができる。つま
り、不織布３ａとジオグリッド３ｂは、底壁部７を越え
て盛土材９中に広がり、格子枠柵５を盛土材９に係留す
るとともに、盛土材９を安定化させる作用を奏する。特
に、一段毎に設けられた不織布３ａは、強度が高いため
土圧によっても切れにくく、強力な補強作用を奏する。
また、不織布３ａは、繊維材料による毛細管現象によ
り、盛土材９に含まれた水を正面に導いて排水する作用
を奏するので、たとえ大量の降雨があっても、盛土材９
が軟弱化するおそれはない。そして、比較的安価なジオ
グリッド３ｂを一段毎に用いることで、高価な不織布３
ａの使用量を節約して、施工費を低減することができ
る。Further, in this embodiment, since the non-woven fabric 3a and the geogrid 3b are alternately used for each step as the reinforcing member, the strength and drainage function of the entire protective structure, which is similar to the case where the non-woven fabric is used for all steps, are provided. Can be obtained. That is, the non-woven fabric 3a and the geogrid 3b spread over the bottom wall portion 7 into the embankment material 9, mooring the lattice frame fence 5 to the embankment material 9 and stabilizing the embankment material 9. In particular, the non-woven fabric 3a provided for each stage has a high strength and thus is hard to be broken by earth pressure, and has a strong reinforcing action.
Further, the non-woven fabric 3a has a function of guiding the water contained in the embankment material 9 to the front surface and draining it by the capillary phenomenon of the fibrous material.
There is no risk of weakening. By using the relatively inexpensive geogrid 3b for each stage, the expensive nonwoven fabric 3
It is possible to save the amount of a used and reduce the construction cost.
【００３２】なお、前記ジオグリッド３ｂに代えて、図
４に示すように、アラミド繊維２１で補強された縦スト
ランド２２と、延伸成形された横ストランド２３とから
なるジオグリッド３ｂを用いることもできる。また、前
記不織布３ａに代えて、図５に示すように、ポリエステ
ル繊維等のメッシュ織物に樹脂を被覆してなる複合織物
３ｃを用いることもできる。Instead of the geogrid 3b, as shown in FIG. 4, a geogrid 3b composed of longitudinal strands 22 reinforced with aramid fiber 21 and stretched transverse strands 23 may be used. . Further, instead of the non-woven fabric 3a, as shown in FIG. 5, it is also possible to use a composite fabric 3c formed by coating a resin on a mesh fabric such as polyester fiber.
【００３３】《第二実施形態》次に、図６は、第二実施
形態に係る岩盤法面１の保護構造を示しており、岩盤法
面１にアンカー３２を固定し、該アンカー３２に格子枠
柵５を連結材３４により連結した点と、格子枠柵５の前
壁部６が底壁部７となす傾斜角を上段側ほど大きく設定
した（具体的には、一段目（最下段）の傾斜角を例えば
約５０度とし、二段目以上の傾斜角は一段毎に１〜５度
ずつ大きくする。）点においてのみ、第一実施形態と相
違している。コーナー部の構造は第一実施例と同様であ
る。Second Embodiment Next, FIG. 6 shows a protection structure for a rock slope 1 according to a second embodiment, in which an anchor 32 is fixed to the rock slope 1 and a grid is attached to the anchor 32. The inclination angle formed by connecting the frame fence 5 with the connecting member 34 and the front wall portion 6 of the lattice frame fence 5 with the bottom wall portion 7 was set to be larger toward the upper stage side (specifically, the first stage (lowermost stage)). The inclination angle is about 50 degrees, and the inclination angles of the second and higher steps are increased by 1 to 5 degrees for each step.). The structure of the corner portion is similar to that of the first embodiment.
【００３４】本実施形態では、岩盤法面１に多数の取付
孔３１を縦横に間隔をおいてあけ、各取付孔３１に金属
棒よりなるアンカー３２を挿入し、モルタル、接着剤、
樹脂等の充填材３３で固定する。アンカー３２の手前端
部にはリング形状の係止部が形成されている。In the present embodiment, a large number of mounting holes 31 are vertically and horizontally spaced on the rock slope 1, and anchors 32 made of metal rods are inserted into the mounting holes 31, and mortar, adhesive,
It is fixed with a filler 33 such as resin. A ring-shaped locking portion is formed at the front end portion of the anchor 32.
【００３５】格子枠柵５を設置した後、該格子枠柵５を
アンカー３２に連結材３４により連結する。連結材３４
はアセンブリ化されたもので、金属厚板製の二つのフッ
ク３５と、両フック３５を繋ぐ金属撚り線よりなるワイ
ヤ３６とからなる。各フック３５を格子枠柵５とアンカ
ー３２の係止部に引っ掛ければ、容易に格子枠柵５をア
ンカー３２に連結できる。格子枠柵５の連結箇所は、前
壁部６でも底壁部７でもよいが、前壁部６の下部の横鉄
筋や底壁部７の横鉄筋が適当であり、格子枠柵５毎に少
なくとも二箇所とすることが好ましい。After the lattice frame fence 5 is installed, the lattice frame fence 5 is connected to the anchor 32 by a connecting member 34. Connecting material 34
Is an assembled product, and is composed of two hooks 35 made of a metal plate and a wire 36 made of a stranded metal wire connecting the hooks 35. By hooking each hook 35 on the locking portion of the lattice frame fence 5 and the anchor 32, the lattice frame fence 5 can be easily connected to the anchor 32. The grid frame fence 5 may be connected to the front wall portion 6 or the bottom wall portion 7, but a horizontal rebar at the lower portion of the front wall portion 6 or a horizontal rebar of the bottom wall portion 7 is suitable, and each grid frame fence 5 is connected. It is preferable to provide at least two locations.
【００３６】本実施形態によれば、第一実施形態による
効果に加え、盛土材９の奥行きを２０００ｍｍ以下（例
えば約５００ｍｍ）と小さくしても、アンカー３２に連
結材３４で連結された格子枠柵５が盛土材９を抱持して
その崩れを防止する。従って、岩盤法面１の下端のすぐ
前方に側溝、道路、所有地境界等があって、用地２の幅
が狭い場合でも、簡単に施工することができる。According to this embodiment, in addition to the effect of the first embodiment, even if the depth of the embankment material 9 is reduced to 2000 mm or less (for example, about 500 mm), the lattice frame connected to the anchor 32 by the connecting material 34. The fence 5 holds the embankment material 9 to prevent its collapse. Therefore, even if there is a gutter, a road, a boundary of the owned land, or the like just in front of the lower end of the rock slope 1, and the width of the site 2 is narrow, the construction can be easily performed.
【００３７】また、上記のように前壁部６の傾斜角を設
定することにより、土圧が大きい下段側において前壁部
６の傾斜角を小さくでき、盛土材９の土圧に耐える力を
確保できる。また、土圧が小さい上段側ほど前壁部６の
傾斜角を大きくでき、上端の法肩（図示略）が前進し
て、天端面の有効面積を広げることができる。Further, by setting the inclination angle of the front wall portion 6 as described above, the inclination angle of the front wall portion 6 can be made small on the lower tier side where the earth pressure is large, and the force for withstanding the earth pressure of the embankment material 9 can be obtained. Can be secured. Further, the inclination angle of the front wall portion 6 can be made larger toward the upper side where the earth pressure is smaller, and the upper shoulder (not shown) can be advanced to widen the effective area of the top end face.
【００３８】《第三実施形態》次に、図７は、コンクリ
ート擁壁ブロックの壁面の保護構造に実施した第三実施
形態を示し、次の点においてのみ、第一実施形態と相違
している。コーナー部の構造は第一実施例と同様であ
る。<Third Embodiment> Next, FIG. 7 shows a third embodiment of the protection structure for the wall surface of the concrete retaining wall block, which is different from the first embodiment only in the following points. . The structure of the corner portion is similar to that of the first embodiment.
【００３９】コンクリート擁壁ブロック４０の壁面４１
は約９０度の急斜面である。この壁面４１に多数の取付
孔４２をあけ、該取付孔４２にアンカー４３を刺し込む
とともに、充填材４４を充填してアンカー４３を固定す
る。アンカー４３の手前端部に形成された係止部に、壁
面４１に沿って上下方向に延びる取付材４５を取り付け
る。金属ワイヤよりなる連結材４６の両端を格子枠柵５
と取付材４５に接続することにより、格子枠柵５をアン
カー４３に連結する。Wall 41 of concrete retaining wall block 40
Is a steep slope of about 90 degrees. A large number of mounting holes 42 are formed in the wall surface 41, the anchors 43 are inserted into the mounting holes 42, and a filler 44 is filled to fix the anchors 43. An attachment member 45 extending in the up-down direction along the wall surface 41 is attached to a locking portion formed at the front end portion of the anchor 43. Both ends of the connecting member 46 made of a metal wire are connected to the lattice frame fence 5.
The grid frame fence 5 is connected to the anchor 43 by connecting to the anchor member 45.
【００４０】なお、本発明は前記実施形態に限定される
ものではなく、発明の趣旨から逸脱しない範囲で適宜変
更して具体化することもできる。The present invention is not limited to the above-described embodiment, but can be embodied by appropriately changing it without departing from the spirit of the invention.
【００４１】（１）各実施形態において、強化部材の端
部を延長して法面、壁面等の保護対象面に固定するこ
と。図８は、第一実施形態において、不織布３ａ及びジ
オグリッド３ｂの端部を延長し、押え板２４と杭２５と
で岩盤法面１に固定した変更例を示している。この場合
の強化部材は、前記アンカー３２，４３と同様に、格子
枠柵５の移動を強力に防止する作用を奏する。(1) In each of the embodiments, the end portion of the reinforcing member is extended and fixed to a surface to be protected such as a slope or a wall surface. FIG. 8 shows a modification in which the end portions of the nonwoven fabric 3a and the geogrid 3b are extended and fixed to the rock slope 1 by the holding plate 24 and the pile 25 in the first embodiment. The reinforcing member in this case has a function of strongly preventing the movement of the lattice frame fence 5, similarly to the anchors 32 and 43.
【００４２】（２）格子枠柵５の底壁部７を、不織布３
ａ又はジオグリッド３ｂに対し、ワイヤ等で結び付けて
止めること。(2) The bottom wall portion 7 of the lattice frame fence 5 is formed of the non-woven fabric 3
Connect to a or Geogrid 3b with a wire or the like and stop.
【００４３】（３）各実施形態において、緑化用シート
を省略すること。(3) In each embodiment, the greening sheet is omitted.
【００４４】（４）各実施形態において、格子枠柵と法
面、壁面等の保護対象面との間に、破砕岩石、礫等の岩
石を充填すること。(4) In each embodiment, rocks such as crushed rocks and gravel are filled between the lattice frame fence and the surface to be protected such as slopes and walls.
【００４５】（５）各実施形態において、吹付層に代え
て、袋に土、種子等を含ませてなる土嚢を用いること。(5) In each of the embodiments, a sandbag made of a bag containing soil, seeds or the like is used instead of the spray layer.
【００４６】（６）各実施形態では、下段の格子枠柵５
の前壁部６に対して上段の格子枠柵５の前壁部６が後側
に重なるように配置されているが、図９に示すように、
下段の格子枠柵５の前壁部６に対して上段の格子枠柵５
の前壁部６が前側に重なるように配置することもでき
る。なお、図９では、便宜上、格子枠柵５以外の各部の
図示を省略している。(6) In each embodiment, the lower grid frame fence 5
Although the front wall portion 6 of the upper lattice frame fence 5 is arranged so as to overlap the rear side with respect to the front wall portion 6 of the above, as shown in FIG.
For the front wall portion 6 of the lower lattice frame fence 5, the upper lattice frame fence 5
It is also possible to arrange the front wall portion 6 of the above so as to overlap the front side. Note that, in FIG. 9, for convenience, the illustration of each part other than the lattice frame fence 5 is omitted.
【００４７】（７）図１０に太線で示すように、格子枠
柵５を構成する一部（例えば特に強度が必要な部分）の
鉄筋に、他の鉄筋より太いものを使用すること。これに
より、鉄筋の一部が充填材の圧力によって正面側に湾曲
変形する現象を防止することができる。(7) As shown by a thick line in FIG. 10, the reinforcing bars of a part (for example, a part requiring particularly strong strength) of the lattice frame fence 5 should be thicker than other reinforcing bars. As a result, it is possible to prevent the phenomenon that a part of the reinforcing bar is bent and deformed to the front side by the pressure of the filler.
【００４８】[0048]
【発明の効果】以上詳述したように、本発明の法面、壁
面等の保護構造によれば、急勾配でも施工でき、施工効
率が良い等の優れた点を持つ格子枠柵を用いた法面、壁
面等の保護構造において、格子枠柵を盛土材に係留する
強化部材としてのジオテキスタイルの使用量を節約し
て、施工費を低減することができ、それにも拘らず、全
段にジオテキスタイルを使用したときに近い保護構造全
体の強度と排水機能とを得ることができる、という優れ
た効果を奏する。As described above in detail, according to the protection structure for slopes, wall surfaces, etc. of the present invention, a grid frame fence having excellent features such as being able to be constructed even on a steep slope and having good construction efficiency is used. In the protection structure of slopes, wall surfaces, etc., it is possible to save the amount of use of geotextile as a reinforcing member for mooring the lattice frame fence to the embankment material and reduce the construction cost. It has an excellent effect that the strength and drainage function of the entire protective structure can be obtained close to when using.
【図１】本発明の第一実施形態に係る岩盤法面の保護構
造を示す斜視図である。FIG. 1 is a perspective view showing a rock slope protection structure according to a first embodiment of the present invention.
【図２】同保護構造の縦断面図である。FIG. 2 is a vertical sectional view of the protective structure.
【図３】同保護構造に使用したジオグリッドの部分斜視
図である。FIG. 3 is a partial perspective view of a geogrid used in the protective structure.
【図４】同保護構造に使用できるジオグリッドの変更例
の部分斜視図である。FIG. 4 is a partial perspective view of a modified example of a geogrid that can be used in the protection structure.
【図５】同保護構造に使用できる複合織物の部分斜視図
である。FIG. 5 is a partial perspective view of a composite fabric that can be used in the protective structure.
【図６】本発明の第二実施形態に係る岩盤法面の保護構
造を示す断面図である。FIG. 6 is a cross-sectional view showing a rock slope protection structure according to a second embodiment of the present invention.
【図７】本発明の第三実施形態に係る擁壁の保護構造を
示す断面図である。FIG. 7 is a sectional view showing a retaining wall protection structure according to a third embodiment of the present invention.
【図８】第一実施形態の変更例の断面図である。FIG. 8 is a cross-sectional view of a modified example of the first embodiment.
【図９】各実施形態における格子枠柵の配置の変更例の
斜視図である。FIG. 9 is a perspective view of a modification example of the arrangement of the lattice frame fences in each embodiment.
【図１０】各実施形態における格子枠柵の変更例の斜視
図である。FIG. 10 is a perspective view of a modification of the lattice frame fence in each embodiment.
１ 岩盤法面 ３ａ 不織布 ３ｂ ジオグリッド ３ｃ 複合織物 ５ 格子枠柵 ６ 前壁部 ７ 底壁部 ８ 緑化用シート ９ 盛土材 １０ 植生部材 ４０ コンクリート擁壁ブロック ４１ 壁面 1 Rock slope 3a Non-woven fabric 3b Geogrid 3c composite fabric 5 lattice fences 6 front wall 7 Bottom wall 8 greening sheets 9 Embankment material 10 Vegetation members 40 concrete retaining wall block 41 wall
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) E02D 17/18 E02D 17/20 103 ─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. 7 , DB name) E02D 17/18 E02D 17/20 103
Claims (2)
壁部とからなり法面、壁面等の保護対象面の前方に設置
された格子枠柵と、前記格子枠柵の底壁部の下に敷かれ
た強化部材と、格子枠柵と保護対象面との間に充填され
た盛土材、岩石等の充填材とにより一つの段が構成さ
れ、該段が下から上へ積まれることにより多段に構築さ
れた法面、壁面等の保護構造において、 前記格子枠柵の底壁部の下に敷かれるとともに底壁部の
後端を越えて保護対象面側へ広げられる強化部材とし
て、繊維材料よりなるジオテキスタイルとしての不織布
と、非繊維材料よりなるジオテキスタイル関連製品とし
ての孔あき樹脂シートを延伸成形してなるジオグリッド
とを、一段毎、複数段毎又は不規則段毎に交互に用いた
ことを特徴とする法面、壁面等の保護構造。1. A lattice frame fence comprising a reinforced slanted front wall portion and a horizontal bottom wall portion, which is installed in front of a surface to be protected such as a slope or a wall surface, and a bottom wall of the lattice frame fence. One step is composed of a reinforcing member laid under the section and a filling material such as embankment material and rock filled between the lattice frame fence and the surface to be protected, and the step is stacked from bottom to top. In a protective structure such as slopes, wall surfaces, etc. that are constructed in multiple steps by being laid, it is laid under the bottom wall part of the lattice frame fence and
As a reinforcing member that can be spread to the surface to be protected beyond the rear end , a non-woven fabric made of a fibrous material as a geotextile and a geogrid made by stretching a perforated resin sheet as a geotextile related product made of a non-fibrous material. A protection structure for slopes, wall surfaces, etc., characterized by being used alternately for every step, every several steps or every irregular step.
他の鉄筋より太いものを使用した請求項１記載の法面、
壁面等の保護構造。2. A part of the reinforcing bars constituting the lattice frame fence,
The slope of claim 1, which is thicker than other reinforcing bars,
Protective structure for walls, etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33495196A JP3431783B2 (en) | 1996-11-28 | 1996-11-28 | Protection structure for slopes and walls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33495196A JP3431783B2 (en) | 1996-11-28 | 1996-11-28 | Protection structure for slopes and walls |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10159102A JPH10159102A (en) | 1998-06-16 |
| JP3431783B2 true JP3431783B2 (en) | 2003-07-28 |
Family
ID=18283068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33495196A Expired - Fee Related JP3431783B2 (en) | 1996-11-28 | 1996-11-28 | Protection structure for slopes and walls |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3431783B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4528466B2 (en) * | 2001-06-14 | 2010-08-18 | 天龍ホールディングス株式会社 | Wooden fence support and wooden fence |
| JP4933821B2 (en) * | 2006-04-19 | 2012-05-16 | 前田工繊株式会社 | Reinforcing belt |
| JP4698524B2 (en) * | 2006-08-09 | 2011-06-08 | 日鐵住金建材株式会社 | Retaining wall |
| CN109298195B (en) * | 2018-08-31 | 2021-09-14 | 北京矿冶科技集团有限公司 | Automatic mold bag filling test system and test method |
| CN113982001B (en) * | 2021-12-06 | 2022-11-18 | 中铁二院工程集团有限责任公司 | Construction method of flexible framework slope protection structure |
| CN114370064B (en) * | 2021-12-23 | 2023-12-26 | 安徽省交通规划设计研究总院股份有限公司 | Counter-slope small-spacing reinforced soil composite supporting body |
| CN115059098A (en) * | 2022-07-15 | 2022-09-16 | 广东省水利水电第三工程局有限公司 | Fixing device for ecological transformation of vertical slope and construction method |
| CN119041459B (en) * | 2024-11-04 | 2025-03-04 | 武汉中交试验检测加固工程有限责任公司 | A construction device and method for assembling cast-in-place lattice beams for slope rescue |
-
1996
- 1996-11-28 JP JP33495196A patent/JP3431783B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10159102A (en) | 1998-06-16 |
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