JP2009007866A - Slope form - Google Patents
Slope form Download PDFInfo
- Publication number
- JP2009007866A JP2009007866A JP2007171423A JP2007171423A JP2009007866A JP 2009007866 A JP2009007866 A JP 2009007866A JP 2007171423 A JP2007171423 A JP 2007171423A JP 2007171423 A JP2007171423 A JP 2007171423A JP 2009007866 A JP2009007866 A JP 2009007866A
- Authority
- JP
- Japan
- Prior art keywords
- slope
- sloped
- formwork
- mold
- crank
- 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.)
- Pending
Links
Landscapes
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
Description
本発明は、盛土構造体を構築するために用いる法面型枠およびそれを用いた工法に関する。 The present invention relates to a slope formwork used for constructing an embankment structure and a construction method using the same.
以前より、ジオテキスタイルと呼ばれる樹脂製の網や不織布からなる補強材が知られており、盛土補強、排水、地盤補強などの目的として地中に敷設し、利用されている。ジオテキスタイルの中でも、規則的な格子構造からなる網状のジオグリッドは、特に盛土や地盤補強に用いられる。 A reinforcement material made of a resin net or nonwoven fabric called geotextile has been known for a long time, and has been laid and used in the ground for purposes such as embankment reinforcement, drainage, and ground reinforcement. Among geotextiles, a net-like geogrid composed of a regular lattice structure is used particularly for embankment and ground reinforcement.
ジオグリッドと土砂をサンドイッチ状に交互に積層させて盛土または壁を構築することが一般的になされている。そのなかでもとりわけ構造体の法面勾配が１：１．０よりも急勾配のものは補強土壁と呼ばれている。補強土壁を構築する場合には、一般的に法面の形状を維持するために法面工が必要となる。補強土壁の法面工としては、鋼製の法面型枠を用いたものや、コンクリートパネルを用いたものがある。 It is a common practice to construct a fill or wall by alternately stacking geogrids and earth and sand in a sandwich. Among them, those having a slope of a steep slope of more than 1: 1.0 are called reinforced earth walls. When constructing a reinforced earth wall, a slope work is generally required to maintain the shape of the slope. As a slope work of the reinforced earth wall, there are one using a steel slope formwork and one using a concrete panel.
補強土壁に用いられる鋼製の法面型枠は様々なものが開発されてきた。特に補強土壁用法面型枠に要求されるスペックは、背面からの土圧に耐えられる強度と、風雨による腐食に耐えられる耐腐食性である。 Various steel slope forms used for reinforced earth walls have been developed. In particular, the specifications required for the sloped formwork for reinforced earth walls are strength that can withstand earth pressure from the back and corrosion resistance that can withstand corrosion due to wind and rain.
法面型枠が背面からの土圧に耐えるには、各法面型枠ユニット間の一体性が重要になる。各法面型枠の大きさは通常人力施工可能なサイズであり、それを積み木のように重ねて壁が構築される。そのため各法面型枠の上下左右に接続する部位が必要となる。特許文献１では、各法面型枠を上下に接続する方法として、格子体の縦軸上端が外側にフック状に折れ曲がった係合部を有している法面型枠を開示している。しかしこの場合、フックの先端が法面側に突き出るため、法面のそばに人家や歩道などがある際には、人に危害を加える恐れがあった。さらに法面に突起物が現れることで、法面の平滑性が悪く、見た目が悪くなった。 In order for the sloped formwork to withstand earth pressure from the back, the unity between the sloped formwork units is important. The size of each slope formwork is usually a size that can be manually constructed, and the walls are constructed by stacking them like building blocks. Therefore, the site | part connected to the up-down and left-right of each slope formwork is needed. In Patent Document 1, as a method of connecting the respective slope molds up and down, a slope mold is disclosed in which the upper end of the vertical axis of the lattice body has an engaging portion bent outward in a hook shape. However, in this case, since the tip of the hook protrudes to the slope side, there is a risk of harm to a person when there is a house or a sidewalk near the slope. Furthermore, the appearance of protrusions on the slope resulted in poor slope smoothness and a poor appearance.
本発明は、法面型枠ユニット同士の一体性があり、盛土背面からの土圧に十分耐えうることができ、見栄えの良い法面を形成できる法面型枠を提供することである。 An object of the present invention is to provide a sloped formwork that is integrated with sloped formwork units, can sufficiently withstand earth pressure from the back of the embankment, and can form a good looking slope.
本発明はこの課題を解決するためになされたものであり請求項１記載の発明は、格子体から形成され、かつ法面部と底面部からなるＬ字状の法面型枠で、該法面型枠の法面部格子体の縦軸上端部分が、法面と反対側に一度折り曲がりさらにそこから該法面部と平行になるように折り曲がるクランク形状をしたクランク部と、該クランク部のさらに上の差込部からなることを特徴とする法面型枠である。 The present invention has been made in order to solve this problem, and the invention according to claim 1 is an L-shaped slope formwork formed of a lattice and having a slope face portion and a bottom face portion. A crank-shaped crank portion in which the upper end portion of the vertical axis of the grid portion of the slope of the formwork is bent once on the side opposite to the slope and then bent so as to be parallel to the slope portion, and further on the crank portion It is a slope formwork which consists of an upper insertion part.
請求項２記載の発明は、前記法面型枠の法面部と底面部との境界に最も近い法面部横軸材と、法面部と底面部との境界に最も近い底面部横軸材との間に、前記差込部を差し込むための隙間である受け部を有することを特徴とする請求項１記載の法面型枠である。 The invention according to claim 2 includes a slope portion horizontal shaft member closest to the boundary between the slope portion and the bottom portion of the slope mold frame, and a bottom portion lateral shaft member closest to the boundary between the slope portion and the bottom portion. The slope mold according to claim 1, further comprising a receiving portion that is a gap for inserting the insertion portion therebetween.
請求項３記載の発明は、前記法面型枠を設置面に設置し、該法面型枠の背面に充填材を前記クランク部の高さまで充填した後、該法面型枠の差込部がそのすぐ上に設置される法面型枠の受け部に差し込んで法面を形成できることを特徴とする請求項１または２に記載の法面型枠である。 The invention according to claim 3 is characterized in that the sloped formwork is placed on an installation surface, and a filler is filled up to the height of the crank part on the back of the sloped formwork, and then the insertion part of the sloped formwork The sloped mold according to claim 1, wherein the slope can be formed by being inserted into a receiving part of a sloped mold placed immediately above.
請求項４記載の発明は、前記法面型枠が、亜鉛８０〜９５重量％及びアルミニウム５〜２０重量％からなる合金でメッキ処理されている鋼線から製造されることを特徴とする請求項１から３のいずれか１つに記載の法面型枠である。 The invention according to claim 4 is characterized in that the sloped formwork is manufactured from a steel wire plated with an alloy composed of 80 to 95% by weight of zinc and 5 to 20% by weight of aluminum. It is a slope formwork as described in any one of 1-3.
請求項５記載の発明は、前記法面型枠の底面部に山状に突起した接続部を有し、該接続部にジオテキスタイルの孔部を上からはめ込み、該法面型枠の側面から該接続部に接続棒を差し込むことで、該法面型枠とジオテキスタイルとを接続できることを特徴とする請求項１から４のいずれか１つに記載の法面型枠である。 The invention according to claim 5 has a connecting portion projecting in a mountain shape on the bottom surface of the sloped mold, and a geotextile hole is fitted into the connecting part from above, and from the side surface of the sloped mold The sloped formwork according to any one of claims 1 to 4, wherein the sloped formwork and the geotextile can be connected by inserting a connecting rod into the connecting portion.
請求項６記載の発明は、前記法面型枠を設置面に設置し、該法面型枠の接続部にジオグリッドを接続し、その後、該法面型枠のクランク部のレベルまで充填材を充填し、充填した充填材の天端に該法面型枠の差込部にその上部にくる上部法面型枠の受け部が差し込まれるように該上部法面型枠を積み、以下前述の工程を所定の高さまで繰り返して補強土壁を構築することを特徴とする補強土壁工法である。 The invention according to claim 6 is characterized in that the sloped formwork is placed on an installation surface, a geogrid is connected to the connecting part of the sloped formwork, and then the filling material up to the level of the crank part of the sloped formwork And stacking the upper slope mold form so that the receiving part of the upper slope mold form is inserted into the insertion part of the slope mold form at the top end of the filling material. This is a reinforced soil wall construction method in which a reinforced soil wall is constructed by repeating the above process to a predetermined height.
本発明による法面型枠を用いることにより、一体性のある盛土構造体の法面を形成することができる。 By using the sloped formwork according to the present invention, an integrated banking structure slope can be formed.
本発明による法面型枠を用いることにより、盛土構造体を構築後に見栄えの良い法面を形成することができる。 By using the sloped formwork according to the present invention, it is possible to form a slope with good appearance after the embankment structure is constructed.
以下、本発明の実施形態について図面を用いて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
図１は、本発明の法面型枠の斜視図である。 FIG. 1 is a perspective view of a slope mold according to the present invention.
本発明は、格子体から形成され、かつ法面部と底面部からなるＬ字状の法面型枠で、該法面型枠の法面部格子体の縦軸上端部分が、法面と反対側に一度折り曲がりさらにそこから該法面部と平行になるように折り曲がるクランク形状をしたクランク部と、該クランク部のさらに上の差込部からなることを特徴とする法面型枠である。 The present invention is an L-shaped sloped mold formed of a grid and having a slope part and a bottom part, and the upper end of the longitudinal axis of the slope part grid of the slope mold is opposite to the slope. A sloped formwork comprising a crank-shaped crank part that is bent once at a time and then bent so as to be parallel to the slope part, and an insertion part further above the crank part.
法面型枠１は、法面部２と底面部３からなるＬ型形状をしている。法面部２と底面部３のなす角度は、４５°以上で９０°以下になるようにする。角度は小さい方が安定であるが、４５°以下であれば法面型枠を設置せずとも安定した盛土構造体を構築できる。また９０°より大きければ安定した補強土壁が構築できない。 The slope mold 1 has an L-shape composed of a slope 2 and a bottom 3. The angle formed by the slope part 2 and the bottom part 3 is 45 ° or more and 90 ° or less. A smaller angle is more stable, but if it is 45 ° or less, a stable embankment structure can be constructed without installing a sloped formwork. If it is larger than 90 °, a stable reinforced earth wall cannot be constructed.
法面型枠は、１枚の格子体を折り曲げたり、または２枚の格子体を溶接するなどして製造されるが、背面からの土圧に耐えられれば製造方法や素材は特に問わない。法面型枠１の大きさは特には限定されないが、法面部で高さ６０ｃｍ×横２ｍ程度、底面部で奥行き４０ｃｍ×横２ｍが最適な大きさであり、この大きさであれば人の手により運ぶことができ施工しやすい。 The slope mold is manufactured by bending one grid or welding two grids, but any manufacturing method or material can be used as long as it can withstand earth pressure from the back. The size of the slope mold 1 is not particularly limited, but the optimum size is 60 cm in height x about 2 m in width on the slope and 40 cm in depth x 2 m on the bottom. It can be carried by hand and is easy to install.
法面型枠の法面部格子体の縦軸上端部分にはクランク部４および差込部５がある。クランク部４は法面と反対側に一度折り曲がりさらにそこから該法面部と平行になるように折り曲がったクランク形状をしている。該クランク部のさらに上部に差込部５があり、差込部５は当該法面型枠の上に次の法面型枠を積み重ねる際に上下の法面型枠を接続するために用いられる。 A crank part 4 and a plug-in part 5 are provided at the upper end of the vertical axis of the slope part grid of the sloped formwork. The crank portion 4 has a crank shape which is bent once on the opposite side to the slope and then bent so as to be parallel to the slope. There is an insertion part 5 at the upper part of the crank part, and the insertion part 5 is used for connecting the upper and lower slope molds when stacking the next slope molds on the slope molds. .
また法面型枠の法面部と底面部の境をなす部分に、積み重ねた際に下にくる法面型枠の差込部５が差し込まれるための受け部６を有している。さらに底面部３の背面側には、ジオグリッドを接続するための接続部５を有している。 Moreover, it has the receiving part 6 for inserting the insertion part 5 of the slope mold form which comes down when it piles up in the part which makes the boundary of the slope part and bottom face part of a slope form frame. Furthermore, on the back side of the bottom surface portion 3, there is a connection portion 5 for connecting a geogrid.
図２は、本発明の法面型枠を上下に接続する際の斜視図である。 FIG. 2 is a perspective view when connecting the sloped formwork of the present invention up and down.
下部法面型枠９を設置後、クランク部４のレベルまで充填材８を充填する。充填した充填材の天端に上部法面型枠１０の底面部を設置する。この際、下部法面型枠９の差込部が上部法面型枠１０の受け部に差し込まれるように設置する。 After installing the lower slope formwork 9, the filler 8 is filled up to the level of the crank portion 4. The bottom surface portion of the upper slope mold 10 is installed at the top end of the filled material. At this time, it is installed so that the insertion portion of the lower slope mold 9 is inserted into the receiving portion of the upper slope mold 10.
図３は、本発明の法面型枠を上下に接続する際の断面図である。 FIG. 3 is a cross-sectional view when connecting the sloped formwork of the present invention up and down.
上部法面型枠１０の受け部６は、法面部と底面部との境界に最も近い法面部横軸材１１と、法面部と底面部との境界に最も近い底面部横軸材１２との底面方向との隙間で構成されている。この隙間は差込部５の外径よりも大きくなければ、差込部を受け部に挿入できない。しかし、広すぎると上部法面型枠１０の背面に充填材を充填するまでの間、上部法面型枠を安定した状態で設置しておくことができない。法面部横軸材１１と底面部横軸材１２との隙間は、差込部太さの１．２倍から５倍程度が望ましい。 The receiving portion 6 of the upper slope mold 10 includes a slope portion horizontal shaft member 11 closest to the boundary between the slope portion and the bottom portion, and a bottom portion lateral shaft member 12 closest to the boundary between the slope portion and the bottom portion. It consists of a gap with the bottom direction. If this gap is not larger than the outer diameter of the insertion part 5, the insertion part cannot be inserted into the receiving part. However, if it is too wide, the upper slope mold cannot be stably installed until the back surface of the upper slope mold 10 is filled with the filler. The gap between the slope portion horizontal shaft member 11 and the bottom portion horizontal shaft member 12 is preferably about 1.2 to 5 times the insertion portion thickness.
クランク部４のクランク幅は、法面部縦軸材と法面部横軸材１１との和よりも少し大きい程度が望ましい。最も良いのは法面部縦軸材と法面部横軸材１１との和の１．２倍から４倍程度である。あまり大きすぎると、下部法面型枠９と上部法面型枠１０の法面部を合わせることが難しくなる。また、差込部５と底面部横軸材１２は上下に連結する際に嵌合しないように製品を設計する。 The crank width of the crank portion 4 is preferably slightly larger than the sum of the slope portion vertical axis member and the slope portion horizontal shaft member 11. The best value is about 1.2 to 4 times the sum of the slope part vertical axis material and the slope part horizontal axis material 11. If it is too large, it becomes difficult to match the slopes of the lower slope mold 9 and the upper slope mold 10. In addition, the product is designed so that the insertion part 5 and the bottom part horizontal shaft member 12 do not fit when connected vertically.
図４は、本発明の法面型枠を上下に接続した際の斜視図である。
図５は、本発明の法面型枠を上下に接続した際の断面図である。
FIG. 4 is a perspective view when the sloped formwork of the present invention is connected up and down.
FIG. 5 is a cross-sectional view when the sloped formwork of the present invention is connected vertically.
法面型枠の素材は鋼線が一般的であるが、背面からの土圧に抵抗することができればどのような素材でもよい。鋼線を利用する場合には、亜鉛メッキや亜鉛―アルミニウム合金メッキ、またはポリエチレン被覆などの腐食対策をすることが望ましい。 The material of the slope mold is generally steel wire, but any material can be used as long as it can resist earth pressure from the back. When using steel wire, it is desirable to take measures against corrosion such as zinc plating, zinc-aluminum alloy plating, or polyethylene coating.
従来、補強土壁工の法面型枠は、鋼線で型枠の形状に加工してから、そのまま亜鉛メッキ液にドブ付けしてメッキを行う、「後メッキ」と呼ばれる方法で製造されていた。しかし本発明の法面型枠は、鋼線をあらかじめメッキしておいて、メッキされた材料を加工して型枠の形状を作製する「先メッキ」という手法を用いる。従来の亜鉛メッキでは、先にメッキしてから加工を行うと、加工の際にメッキが剥がれ落ちるという問題点があったが、本発明のメッキは加工に耐えうる十分な強度があり、メッキ後に加工しても問題がない。 Conventionally, the sloped formwork of a reinforced earthwork is manufactured by a method called “post-plating” in which a steel wire is processed into a formwork shape and then plated with a galvanizing solution as it is. It was. However, the sloped formwork of the present invention uses a technique called “pre-plating” in which a steel wire is plated in advance and the plated material is processed to form the shape of the formwork. In the conventional galvanization, if the processing was performed after first plating, the plating was peeled off during processing, but the plating of the present invention has sufficient strength to withstand the processing, and after the plating There is no problem even if it is processed.
本発明の法面型枠に用いる鋼線のメッキは、亜鉛８０〜９５重量％及びアルミニウム５〜２０重量％からなる合金がメッキ処理されていれば、腐食に十分耐えうることができ、さらに加工の際にメッキ剥がれを起こさない。さらに好ましくは亜鉛８８〜９２重量％及びアルミニウム８〜１２重量％の合金メッキが施されている鋼線で、この組成であれば展延性がよく、加工しやすい。 The steel wire used for the sloped formwork of the present invention can withstand corrosion sufficiently if an alloy composed of 80 to 95% by weight of zinc and 5 to 20% by weight of aluminum is plated. Does not cause plating peeling during the process. More preferably, it is a steel wire on which an alloy plating of 88 to 92% by weight of zinc and 8 to 12% by weight of aluminum is applied. With this composition, the ductility is good and it is easy to process.
本発明の鋼線のメッキ過程は以下の通りである。まず鋼線を脱脂炉に通して、鋼線の表面にある伸線潤滑剤等の油成分を除去する。さらに前記処理を施した鋼線を冷却し、その後塩酸で満たされた水槽の中を通して鋼線表面の酸化スケールを除去する。さらに前記処理された鋼線を溶融した亜鉛槽の中を通して、鋼線に亜鉛メッキを施す。亜鉛メッキされた鋼線をさらに亜鉛８０〜９５重量％及びアルミニウム５〜２０重量％からなる合金浴中を通して、亜鉛―アルミニウム合金メッキ鋼線を作製する。 The steel wire plating process of the present invention is as follows. First, the steel wire is passed through a degreasing furnace to remove oil components such as a wire drawing lubricant on the surface of the steel wire. Further, the treated steel wire is cooled, and then the oxidized scale on the surface of the steel wire is removed through a water tank filled with hydrochloric acid. Further, the steel wire is galvanized through a zinc bath in which the treated steel wire is melted. The galvanized steel wire is further passed through an alloy bath composed of 80 to 95% by weight of zinc and 5 to 20% by weight of aluminum to produce a zinc-aluminum alloy plated steel wire.
図６〜図１０に本発明の法面型枠を用いた補強土壁の施工手順を示す。 The construction procedure of the reinforced earth wall using the sloped formwork of the present invention is shown in FIGS.
図６は、本発明の法面型枠にジオグリッドを接続した際の斜視図である。法面型枠は施工する版に設置した後、底面部３にある接続部７にジオグリッド１３を上からかぶせ、接続部５の山部にジオグリッド１３の孔部を差し込む。 FIG. 6 is a perspective view when a geogrid is connected to the sloped formwork of the present invention. After setting the slope mold on the plate to be constructed, the geogrid 13 is placed on the connecting portion 7 on the bottom surface portion 3 from above, and the hole of the geogrid 13 is inserted into the mountain portion of the connecting portion 5.
図７は、本発明のジオグリッドを接続した法面型枠の接続部に接続棒を挿入している際の斜視図である。接続棒１４は接続部７とジオグリッド１３の間を側面から差し込むように挿入し、ジオグリッド１３が接続部７から上に逃げないようにする。 FIG. 7 is a perspective view when the connecting rod is inserted into the connecting portion of the sloped formwork to which the geogrid of the present invention is connected. The connecting rod 14 is inserted so as to be inserted from the side between the connecting portion 7 and the geogrid 13 so that the geogrid 13 does not escape upward from the connecting portion 7.
図８は、本発明の法面型枠に吸出防止材と斜体材を設置した際の斜視図である。法面型枠の法面部２の背面側に、法面側への充填材のこぼれを防止するために不織布などからなる吸出防止材１５を張り付ける。充填材に細粒分を含む土砂等を用いる場合、法面型枠のみであれば、目が粗すぎて土こぼれをおこしたり、水による表面浸食をおこす。これらを防止するために吸出防止材を用いる。吸出防止材１５は、網目状に孔を有する樹脂製のシートや不織布などである。吸出防止材の孔径は法面型枠のメッシュより細かい必要がある。また法面の緑化させる場合、吸出防止材は不織布などに植物の種子を埋め込んだ植生マットでもよい。 FIG. 8 is a perspective view when the anti-suction material and the italic material are installed on the sloped mold of the present invention. An anti-suction material 15 made of a nonwoven fabric or the like is attached to the back side of the slope part 2 of the slope mold to prevent the filler from spilling on the slope side. In the case of using earth and sand containing fine particles as the filler, if it is only a sloped formwork, the eyes are too rough and spill out or surface erosion with water. In order to prevent these, a sucking prevention material is used. The sucking prevention material 15 is a resin sheet or a nonwoven fabric having holes in a mesh shape. The pore diameter of the evacuation preventing material needs to be finer than the mesh of the sloped formwork. Further, when the slope is greened, the evacuation preventing material may be a vegetation mat in which plant seeds are embedded in a nonwoven fabric or the like.
斜体材１６は、法面型枠の背面に土砂などの充填材を充填し重機等で転圧した際に、法面型枠１の法面部２が起きあがったり、変形しない程度に敷設する。数は特に問わないが、最もよい形態では、隣り合う斜体材１６の間隔が５０ｃｍ程度になる程度がよい。 The italic material 16 is laid so that the slope part 2 of the slope mold 1 does not rise or deform when the back of the slope mold is filled with a filler such as earth and sand and rolled with a heavy machine or the like. The number is not particularly limited, but in the best mode, it is preferable that the distance between the adjacent italic materials 16 is about 50 cm.
図９は、本発明の法面型枠を設置した際の断面図である。法面型枠は必要に応じて、仮止め用のアンカーピン１７などで固定する。法面型枠に接続されたジオグリッドは、ある程度のテンションを持たせてから仮止め用のアンカーピンなどで固定する。 FIG. 9 is a cross-sectional view of the sloped form of the present invention. The sloped formwork is fixed with anchor pins 17 for temporary fixing, if necessary. The geogrid connected to the sloped formwork is fixed with temporary anchor pins after giving a certain amount of tension.
図１０は、１段目を設置後に、その上に２段目の法面型枠を設置した際の断面図である。図９のように法面型枠を設置後、法面型枠の背面に土砂等の充填材を充填する。盛土構造物を構築する際には、２５ｃｍから３０ｃｍごとに転圧をすることが一般的であるが、この補強土壁を構築するに際しても同様の処置を行うことが望ましい。すなわち、土砂等の充填材を厚さ５０cm程度搬入し、その後、締固め機械で転圧して厚さ２５ｃｍから３０ｃｍの盛土層を作る。法面型枠１の高さが６０ｃｍの場合は、土砂搬入及び転圧の作業を２回行うと、法面型枠１段分の補強土壁を構築できる。 FIG. 10 is a cross-sectional view when the second-stage slope mold is installed on the first stage after the first stage is installed. After setting the slope mold as shown in FIG. 9, the back of the slope mold is filled with a filler such as earth and sand. When constructing an embankment structure, it is common to perform rolling pressure every 25 to 30 cm, but it is desirable to perform the same treatment when constructing this reinforced soil wall. That is, a filler such as earth and sand is carried in at a thickness of about 50 cm, and then rolled with a compacting machine to form an embankment layer having a thickness of 25 cm to 30 cm. When the height of the sloped formwork 1 is 60 cm, a reinforced soil wall for one step of the sloped formwork can be constructed by carrying in the earth and sand and rolling the work twice.
また、充填材を充填する際に、法面型枠の高さのちょうど真ん中ぐらいのレベルに不織布からなる排水材１８を必要に応じて設置することができる。 Further, when filling with the filler, the drainage material 18 made of non-woven fabric can be installed if necessary at a level just in the middle of the height of the sloped formwork.
以後、この工程を所定の高さまで繰り返し、補強土壁を構築する。 Thereafter, this process is repeated to a predetermined height to construct a reinforced earth wall.
次に本発明のメッキ鋼線の溶接及び曲げ加工性と、法面型枠の耐食性について、実施例、比較例を挙げて説明する。 Next, the welding and bending workability of the plated steel wire of the present invention and the corrosion resistance of the sloped formwork will be described with reference to examples and comparative examples.
実施例１は、亜鉛―アルミニウム合金メッキ鋼線を用いて作製した法面型枠である。メッキ付着量は３６９（ｇ／ｍ２）、アルミニウム含有量１４質量％（ＪＩＳ Ｈ０４０１の試験方法による）である。また亜鉛―アルミニウム合金メッキ鋼線の径は４ｍｍである。 Example 1 is a sloped mold made using a zinc-aluminum alloy plated steel wire. The plating adhesion amount is 369 (g / m 2 ), and the aluminum content is 14% by mass (according to the test method of JIS H0401). The diameter of the zinc-aluminum alloy plated steel wire is 4 mm.
比較例１は、 あらかじめ鋼線に亜鉛にてメッキを施した亜鉛メッキ鋼線を用いて、法面型枠を作製した。メッキ付着量は６８９（ｇ／ｍ２）（ＪＩＳ Ｈ０４０１の試験方法による）である。また亜鉛メッキ鋼線の径は４ｍｍである。 In Comparative Example 1, a sloped form was produced using a galvanized steel wire obtained by previously plating a steel wire with zinc. The plating adhesion amount is 689 (g / m 2 ) (according to the test method of JIS H0401). The diameter of the galvanized steel wire is 4 mm.
比較例２は、鋼線にて作製した法面型枠に亜鉛にて後メッキした法面型枠である。メッキ付着量は６８９（ｇ／ｍ２）（ＪＩＳ Ｈ０４０１の試験方法による）である。また亜鉛メッキ鋼線の径は４ｍｍである。 Comparative Example 2 is a sloped formwork obtained by post-plating with zinc on a sloped formwork made of steel wire. The plating adhesion amount is 689 (g / m 2 ) (according to the test method of JIS H0401). The diameter of the galvanized steel wire is 4 mm.
実施例１は、法面型枠の法面部から底面部にわたるＬ型の曲面部にメッキ割れ、および溶接部にメッキのめくれが見られなかった。比較例１は、法面型枠の法面部から底面部にわたるＬ型の曲面部にメッキ割れ、および溶接部にメッキのめくれが見られた。 In Example 1, plating cracks were not observed on the L-shaped curved surface portion extending from the sloped surface portion to the bottom surface portion of the sloped formwork, and plating turning was not observed on the welded portion. In Comparative Example 1, plating cracks were observed in the L-shaped curved surface part extending from the sloped part to the bottom part of the sloped formwork, and plating turning was seen in the welded part.
実施例１及び比較例２を、ＪＩＳ Ｚ ２３７１の塩水噴霧試験を行い評価した。実施例１は、１１８５６時間経過後も赤錆は発生しなかった。比較例２は、８１６時間後に赤錆が発生した。 Example 1 and Comparative Example 2 were evaluated by performing a salt spray test of JIS Z 2371. In Example 1, red rust did not occur even after 11856 hours. In Comparative Example 2, red rust occurred after 816 hours.
本発明による法面型枠を用いることにより、法面型枠ユニット同士の一体性があり、盛土背面からの土圧に十分耐えうることができ、また盛土体構築後に法面がきれいに見える盛土構造体を構築することができる。 By using the sloped formwork according to the present invention, there is an integration between sloped formwork units, which can sufficiently withstand the earth pressure from the backside of the embankment, and the embankment structure where the slope can be seen cleanly after the embankment body construction The body can be built.
１ 法面型枠
２ 法面部
３ 底面部
４ クランク部
５ 差込部
６ 受け部
７ 接続部
８ 充填材
９ 下部法面型枠
１０ 上部法面型枠
１１ 法面部横軸材
１２ 底面部横軸材
１３ ジオグリッド
１４ 接続棒
１５ 吸出防止材
１６ 斜体材
１７ アンカーピン
１８ 排水材
DESCRIPTION OF SYMBOLS 1 Slope formwork 2 Slope part 3 Bottom face part 4 Crank part 5 Insertion part 6 Receiving part 7 Connection part 8 Filler 9 Lower slope formwork 10 Upper slope formwork 11 Slope part horizontal axis 12 Bottom part horizontal axis Material 13 Geogrid 14 Connecting rod 15 Suction prevention material 16 Italic material 17 Anchor pin 18 Drainage material
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007171423A JP2009007866A (en) | 2007-06-29 | 2007-06-29 | Slope form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007171423A JP2009007866A (en) | 2007-06-29 | 2007-06-29 | Slope form |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2009007866A true JP2009007866A (en) | 2009-01-15 |
Family
ID=40323215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2007171423A Pending JP2009007866A (en) | 2007-06-29 | 2007-06-29 | Slope form |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2009007866A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2991355A1 (en) * | 2012-05-29 | 2013-12-06 | Alain Antoniazzi | Construction element e.g. brick, for constructing wall, has metal structure folded to form single piece, vertical branch and base that is extended in both sides of branch and locally covered with attachment material layer by resin |
-
2007
- 2007-06-29 JP JP2007171423A patent/JP2009007866A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2991355A1 (en) * | 2012-05-29 | 2013-12-06 | Alain Antoniazzi | Construction element e.g. brick, for constructing wall, has metal structure folded to form single piece, vertical branch and base that is extended in both sides of branch and locally covered with attachment material layer by resin |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8632282B2 (en) | Mechanically stabilized earth system and method | |
| CN108468341B (en) | Anti-slide pile-corrugated steel arch-anchor-pulling combined slope protection structure and construction method | |
| CN205776273U (en) | Tall earth fill balance weight retaining wall and prestress anchorage cable combined support structure | |
| JP5471797B2 (en) | Seismic reinforcement structure of revetment structure and existing revetment structure | |
| CN210439302U (en) | Foundation structure formed by basement and supporting piles | |
| JP2009007866A (en) | Slope form | |
| CN203729311U (en) | Cable-stayed concrete pile fixing slope protection structure | |
| KR200429312Y1 (en) | Connecting Structure of stiffener for Reinforced Earth Retaining-Wall | |
| CN212506156U (en) | Anti-impact protection structure capable of being constructed quickly | |
| CN209798563U (en) | Anti structure of floating of assembled culvert | |
| JP5097249B2 (en) | Drain structure and construction method of drain structure | |
| JP3804943B2 (en) | Reinforced earth structure and wall block | |
| JP5319880B2 (en) | Retaining wall | |
| CN214245857U (en) | Anti-floating anchor bar for preventing top anchoring grouting body from cracking and anti-floating anchor | |
| CN110093939A (en) | A kind of method of mining area slope ecological reparation | |
| CN102912800B (en) | A kind of for the treatment of after build the three-dimensional composite reinforcement method of the high steep embankment side slope of formula | |
| JP2009281084A (en) | Header stopping form | |
| CN209989781U (en) | Novel structure of silty-fine sand stratum flood control dam | |
| CN212956382U (en) | Ecological gabion retaining wall | |
| KR100763497B1 (en) | The fence construction method for falling-stone prevention | |
| JP2006083697A (en) | Reinforced earth structure and wall surface block | |
| CN113882424A (en) | Reinforcing method for newly added foundation bolts of tower foot plates of old line iron tower | |
| JP7300661B1 (en) | Embankment protection structure and its formation method | |
| CN207608922U (en) | A kind of architectural engineering retaining wall | |
| CN107313432B (en) | Upper soft and lower hard stratum foundation pit supporting structure and construction method thereof |