JPH0742158A - Slope stabilization construction method - Google Patents
Slope stabilization construction methodInfo
- Publication number
- JPH0742158A JPH0742158A JP19375493A JP19375493A JPH0742158A JP H0742158 A JPH0742158 A JP H0742158A JP 19375493 A JP19375493 A JP 19375493A JP 19375493 A JP19375493 A JP 19375493A JP H0742158 A JPH0742158 A JP H0742158A
- Authority
- JP
- Japan
- Prior art keywords
- geotextile
- slope
- slant face
- pressure receiving
- force
- 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
- 238000010276 construction Methods 0.000 title abstract description 15
- 230000006641 stabilisation Effects 0.000 title description 4
- 238000011105 stabilization Methods 0.000 title description 4
- 239000004746 geotextile Substances 0.000 claims abstract description 25
- 239000004744 fabric Substances 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 12
- 230000000087 stabilizing effect Effects 0.000 claims description 8
- 239000011178 precast concrete Substances 0.000 abstract description 6
- 239000004567 concrete Substances 0.000 abstract description 5
- 238000007493 shaping process Methods 0.000 abstract description 4
- 238000005507 spraying Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、法面等斜面の安定化工
法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for stabilizing slopes such as slopes.
【０００２】[0002]
【従来の技術】法面等斜面の安定化を図るために、図５
に示すようにグランドアンカー１を地盤中に配置するア
ンカー工法によるものが知られている。2. Description of the Related Art In order to stabilize slopes such as slopes, FIG.
There is known an anchor construction method in which the ground anchor 1 is arranged in the ground as shown in FIG.
【０００３】このアンカー工法でのグランドアンカー１
にはＰＣ鋼材等高強度の鋼材が使用され、この鋼材両端
部を地盤中と地表面とにそれぞれ定着し、プレストレス
を与えることで地盤の緩みを防止するものである。図中
２はすべり面を示す。Ground anchor 1 in this anchor construction method
A high-strength steel material such as PC steel material is used for this, and both ends of this steel material are fixed in the ground and the ground surface, respectively, and prestressing is applied to prevent the ground from loosening. In the figure, 2 indicates a slip surface.
【０００４】前記グランドアンカー１の地表面すなわち
斜面への定着は、この斜面上に反力構造物３を設けるこ
とで行われ、従来、かかる反力構造物３としては現場造
成のものと、プレキャストコンクリート製のものがあ
る。Fixing of the ground anchor 1 on the ground surface, that is, a slope is performed by providing a reaction force structure 3 on this slope. Conventionally, as the reaction force structure 3, a field construction type and a precast type are used. Some are made of concrete.
【０００５】このうち現場造成のものは図６に示すよう
に現場打ち枠４を主体とするものであり、この現場打ち
枠４は斜面（法面）上に剛性の高いエクスパンドメタル
によって構成した型枠を格子状に配置固定し、モルタル
あるいはコンクリートを吹き付けにより打設して形成す
る。Of these, the one constructed on-site mainly comprises the in-situ casting frame 4 as shown in FIG. 6, and this in-situ casting frame 4 is a mold made of expanded metal having high rigidity on the slope (slope). The frame is placed and fixed in a grid pattern, and mortar or concrete is sprayed to form it.
【０００６】プレキャストコンクリート製のものはその
一例は図７に示すようにアンカー受圧板としての十字ブ
ロック５を利用するもので、この十字ブロック５は中心
部から先端にかけて高さが徐々に低くなるプレキャスト
ＲＣ製の上部フランジ付側板からなる。側板間の中空部
を利用してコンクリート打設できるので地山との一体化
が期待できる。An example of precast concrete is a cross block 5 used as an anchor pressure receiving plate as shown in FIG. 7, and the cross block 5 has a height that gradually decreases from the center to the tip. It consists of a side plate with an upper flange made of RC. Since concrete can be placed using the hollow part between the side plates, it can be expected to be integrated with the ground.
【０００７】また、図示は省略するが、プレキャストコ
ンクリート製のものとして、断面形状が中空の台形をし
た受圧板を使用することもある。Although not shown, a pressure receiving plate having a trapezoidal hollow cross section may be used as the precast concrete.
【０００８】[0008]
【発明が解決しようとする課題】前記図６に示す現場打
ち枠４は、精度の高い法面整形を必要とせずある程度の
凹凸にも対応でき、また、施工機械がコンパクトなこと
から、現場の立地条件にもあまり影響されないという利
点を有する。その反面、プレキャストコンクリート製の
部材を用いる場合に比較して施工に時間がかかり、特に
吹き付け法枠工を採用した場合には、法枠自体の強度が
期待できないため１本当たりのアンカー荷重が制限を受
ける。The on-site casting frame 4 shown in FIG. 6 does not require highly accurate slope shaping and can cope with unevenness to some extent, and since the construction machine is compact, it can be used on site. It has the advantage that it is not much affected by location conditions. On the other hand, compared to the case of using precast concrete members, the construction takes longer time, and especially when the spray frame method is adopted, the strength of the frame itself cannot be expected and the anchor load per one is limited. Receive.
【０００９】一方、前記図７に示すようなプレキャスト
コンクリート製の部材を反力構造物として用いる場合に
は、施工時間を大幅に短縮でき、アンカーの荷重の大小
が選択できるが、精度の高い法面整形を必要とし、部材
の運搬等の問題から現場立地条件が悪い場合は施工が不
可能となることもある。On the other hand, when a member made of precast concrete as shown in FIG. 7 is used as a reaction force structure, the construction time can be greatly shortened and the size of the anchor load can be selected. If surface conditions are poor due to problems such as transportation of parts, it may be impossible to carry out construction.
【００１０】本発明の目的は前記従来例の不都合を解消
し、現場立地条件にも左右されず、また、斜面の凹凸に
も対応できるので精度の高い法面整形を必要とせず、簡
単に施工でき、工期の短縮も可能な斜面安定化工法を提
供することにある。The object of the present invention is to eliminate the inconveniences of the above-mentioned conventional examples, not to be affected by site location conditions, and to be able to deal with unevenness of slopes, so that accurate slope shaping is not required and simple construction is possible. It is to provide a slope stabilization method that can be done and can shorten the construction period.
【００１１】[0011]
【課題を解決するための手段】本発明は前記目的を達成
するため、法面等斜面にジオテキスタイル（土木用繊維
布）を敷設し、このジオテキスタイルを反力構造物とし
てグランドアンカーを配置すること、および、グランド
アンカーは受圧版を介してジオテキスタイルを固定する
こと、もしくは、グランドアンカーは定着用コーンを介
してジオテキスタイルを固定することを要旨とするもの
である。In order to achieve the above object, the present invention lays a geotextile (fiber cloth for civil engineering) on a slope such as a slope, and arranges a ground anchor by using this geotextile as a reaction structure. Also, the gist of the ground anchor is to fix the geotextile via a pressure plate, or the ground anchor is to fix the geotextile via a fixing cone.
【００１２】[0012]
【作用】本発明によれば、崩壊性の斜面にジオテキスタ
イルを敷設し、グランドアンカーを用いて要所要所を斜
面に定着するもので、アンカーの引っ張り力はジオテキ
スタイルに伝達され、この力は斜面に支圧力となって作
用する。According to the present invention, the geotextile is laid on the collapsible slope and the ground anchor is used to fix the required points on the slope. The tensile force of the anchor is transmitted to the geotextile, and this force is applied to the slope. It acts as supporting pressure.
【００１３】[0013]
【実施例】以下、本発明の実施例を図面について詳細に
説明する。図１は本発明の斜面安定化工法の１実施例を
示す縦断側面図、図２は同上平面図で、すべり面２が地
盤にある法面等の斜面の安定化を図る場合である。Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a vertical sectional side view showing an embodiment of a slope stabilizing method of the present invention, and FIG. 2 is a plan view of the same as above, showing a case where a slip surface 2 is intended to stabilize a slope such as a slope on the ground.
【００１４】本発明は、法面等斜面にジオテキスタイル
（土木用繊維布）６を敷設し、このジオテキスタイル６
を反力構造物としてグランドアンカー１を配置する。According to the present invention, a geotextile (fiber cloth for civil engineering) 6 is laid on a slope such as a slope, and the geotextile 6 is
The ground anchor 1 is arranged as a reaction force structure.
【００１５】本実施例ではジオテキスタイル６を斜面に
敷設する際に、グランドアンカー１の配置個所にアンカ
ー定着具としてのプレキャストコンクリートブロック製
の受圧版７を配置し、この受圧版７でジオテキスタイル
６を押さえ込み固定するようにした。In this embodiment, when the geotextile 6 is laid on a slope, a pressure receiving plate 7 made of a precast concrete block as an anchor fixing tool is arranged at a place where the ground anchor 1 is arranged, and the geotextile 6 is pressed by the pressure receiving plate 7. I fixed it.
【００１６】ジオテキスタイル６にはその材質の相違に
より種々のものがあるが、いずれにせよ、所定の引っ張
り耐力を有するものであることを前提条件とする。There are various types of geotextiles 6 depending on the difference in their materials, but in any case, it is a precondition that they have a predetermined tensile strength.
【００１７】このようにして、図３にも示すようにグラ
ンドアンカー１の引っ張り力は受圧版７を介してジオテ
キスタイル６に伝達され、この力は斜面に支圧力となっ
て作用する。In this way, as shown in FIG. 3, the pulling force of the ground anchor 1 is transmitted to the geotextile 6 via the pressure receiving plate 7, and this force acts on the slope as a bearing pressure.
【００１８】図４は本発明の他の実施例を示すもので、
グランドアンカー１とジオテキスタイル６との接続は受
圧版を介さずに直接接続するものとした。その場合には
定着用コーン８が結合具として利用され、ジオテキスタ
イル６に取り付けられる。FIG. 4 shows another embodiment of the present invention.
The ground anchor 1 and the geotextile 6 are connected directly without using a pressure plate. In that case, the fixing cone 8 is used as a fitting and is attached to the geotextile 6.
【００１９】[0019]
【発明の効果】以上述べたように本発明の斜面安定化工
法は、ジオテキスタイルというシート状物を利用するの
で、現場立地条件にも左右されず、また、斜面の凹凸に
も対応できるので精度の高い法面整形を必要とせず、簡
単に施工でき、コンクリート等の吹き付け・打設も伴わ
ないので、工期の短縮も可能で、工費の低廉化にもなる
ものである。As described above, since the slope stabilization method of the present invention uses a sheet-like material called geotextile, it does not depend on the site location conditions, and it can also cope with unevenness of the slope so that accuracy can be improved. It does not require high slope shaping, can be easily installed, and does not involve spraying or placing concrete, etc., so the construction period can be shortened and construction costs can be reduced.
【００２０】さらに、ジオテキスタイルにより、表層の
浸食・風化防止のための植生工の施工も容易になるもの
である。Furthermore, the geotextile facilitates the construction of vegetation to prevent erosion and weathering of the surface layer.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の斜面安定化工法の１実施例を示す縦断
側面図である。FIG. 1 is a vertical sectional side view showing an embodiment of a slope stabilizing method of the present invention.
【図２】本発明の斜面安定化工法の１実施例を示す平面
図である。FIG. 2 is a plan view showing an embodiment of a slope stabilizing method of the present invention.
【図３】本発明の斜面安定化工法の１実施例を示す要部
の縦断側面図である。FIG. 3 is a vertical cross-sectional side view of essential parts showing one embodiment of the slope stabilization method of the present invention.
【図４】本発明の斜面安定化工法の他の実施例を示す要
部の縦断側面図である。FIG. 4 is a vertical cross-sectional side view of essential parts showing another embodiment of the slope stabilizing method of the present invention.
【図５】従来例の縦断側面図である。FIG. 5 is a vertical sectional side view of a conventional example.
【図６】従来例の一つを示す要部の平面図である。FIG. 6 is a plan view of a main part showing one of conventional examples.
【図７】従来例の他の一つを示す要部の平面図である。FIG. 7 is a plan view of an essential part showing another one of the conventional examples.
１…グランドアンカー ２…スベリ面 ３…反力構造物 ４…現場打ち枠 ５…十字ブロック ６…ジオテキスタイル ７…受圧版 ８…定着用コーン 1 ... Grand anchor 2 ... Sliding surface 3 ... Reaction structure 4 ... Site frame 5 ... Cross block 6 ... Geotextile 7 ... Pressure plate 8 ... Fixing cone
Claims (3)
繊維布）を敷設し、このジオテキスタイルを反力構造物
としてグランドアンカーを配置することを特徴とした斜
面安定化工法。1. A slope stabilizing method characterized in that a geotextile (fiber cloth for civil engineering) is laid on a slope such as a slope, and a ground anchor is arranged as a reaction force structure of the geotextile.
テキスタイルを固定する請求項１記載の斜面安定化工
法。2. The slope stabilizing method according to claim 1, wherein the ground anchor fixes the geotextile through a pressure receiving plate.
てジオテキスタイルを固定する請求項１記載の斜面安定
化工法。3. The slope stabilizing method according to claim 1, wherein the ground anchor fixes the geotextile through a fixing cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19375493A JPH0742158A (en) | 1993-08-04 | 1993-08-04 | Slope stabilization construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19375493A JPH0742158A (en) | 1993-08-04 | 1993-08-04 | Slope stabilization construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0742158A true JPH0742158A (en) | 1995-02-10 |
Family
ID=16313260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19375493A Pending JPH0742158A (en) | 1993-08-04 | 1993-08-04 | Slope stabilization construction method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0742158A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001011863A (en) * | 1999-04-27 | 2001-01-16 | Yoshika Kk | Slope protection method and reverse winding slope protection method |
| JP2011026951A (en) * | 2010-10-04 | 2011-02-10 | Ps Mitsubishi Construction Co Ltd | Connecting tool for continuous fiber band and slope stabilization method |
| JP2011117124A (en) * | 2009-10-27 | 2011-06-16 | Toa Grout Kogyo Co Ltd | Slope stabilizing system |
-
1993
- 1993-08-04 JP JP19375493A patent/JPH0742158A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001011863A (en) * | 1999-04-27 | 2001-01-16 | Yoshika Kk | Slope protection method and reverse winding slope protection method |
| JP2011117124A (en) * | 2009-10-27 | 2011-06-16 | Toa Grout Kogyo Co Ltd | Slope stabilizing system |
| JP2011026951A (en) * | 2010-10-04 | 2011-02-10 | Ps Mitsubishi Construction Co Ltd | Connecting tool for continuous fiber band and slope stabilization method |
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