JPH01223219A - Retaining wall construction for slope surface - Google Patents
Retaining wall construction for slope surfaceInfo
- Publication number
- JPH01223219A JPH01223219A JP4936088A JP4936088A JPH01223219A JP H01223219 A JPH01223219 A JP H01223219A JP 4936088 A JP4936088 A JP 4936088A JP 4936088 A JP4936088 A JP 4936088A JP H01223219 A JPH01223219 A JP H01223219A
- Authority
- JP
- Japan
- Prior art keywords
- psc
- slope
- retaining wall
- tensile material
- fixed
- 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.)
- Granted
Links
- 238000010276 construction Methods 0.000 title claims description 19
- 239000004567 concrete Substances 0.000 claims abstract description 15
- 238000003780 insertion Methods 0.000 claims abstract description 10
- 230000037431 insertion Effects 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 21
- 239000011178 precast concrete Substances 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 239000011440 grout Substances 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004568 cement Substances 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000000368 destabilizing effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、特に急傾斜の法面をコシクリート版によって
被覆して崩落を防止する法面用擁壁工法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention particularly relates to a retaining wall construction method for slopes in which steep slopes are covered with cosiclete slabs to prevent collapse.
（従来の技術）
一般に法面を保護する工法には、棒状や十字状あるいは
井桁状をしたコンクリートブロックを組み合わせて格子
状をした法枠を法面に設置する法枠工法がある。また法
面が急傾斜である場合には、法面の前面にコンクリート
ブロックを積み上げ、その重量によって法面の崩落を防
止する工法がある。(Prior Art) Generally speaking, there is a construction method for protecting slopes, which is a slope construction method in which a lattice-shaped slope is installed on the slope by combining rod-shaped, cross-shaped, or cross-shaped concrete blocks. If the slope is steep, there is a construction method in which concrete blocks are piled up in front of the slope to prevent the slope from collapsing due to their weight.
（発明が解決しようとする課題）
しかし、従来の法枠工法では法面が急傾斜である場合に
は土砂の流出を防止するために法枠内に現場施工によっ
て、コンクリートを打設する必要があり、また斜面に大
重量の法枠や場所打コンクリートを搬入しなければなら
ず工事に多くの労力を要し、しかも傾斜が一定以上の場
合には施工できない等の問題があった。(Problem to be solved by the invention) However, with the conventional slope construction method, when the slope is steep, it is necessary to place concrete on-site within the slope to prevent soil from flowing out. Moreover, there were problems such as having to carry heavy legal frames and cast-in-place concrete onto the slope, requiring a lot of labor, and construction being impossible if the slope was above a certain level.
また重量式ブロック積工法は、直立に近い傾斜の法面に
対しても施工可能であるが、施工に際し−旦法面を削り
取り、その前面にブロックを積み上げ、背面に流水層を
形成しつつ裏込めするものであり、安定している法面に
対しても法面の削り取りが必要になるため、かえって地
山の不安定化を招くという問題があり、更に広い法面に
施工するには多量のブロックが必要になり、しかも各ブ
ロック毎の重量が大きいためコスト高となり、しかも施
工に多大の労力を要する等の問題があった。In addition, the heavy block construction method can be constructed even on slopes that are close to upright. Since it is necessary to scrape away the slope surface even if it is stable, there is a problem of destabilizing the ground. blocks are required, and the weight of each block is large, resulting in high costs and problems such as requiring a great deal of labor for construction.
本発明は、このような従来の問題にかんがみ、急傾斜で
広面積の法面に対しても軽量のプレキャスト部材を使用
して安定な地山を崩すことなく、少い労力で安定性の高
い法面保護ができる法面用擁壁工法の提供を目的とした
ものである。In view of these conventional problems, the present invention uses lightweight precast members to provide high stability even on steep and wide-area slopes without disturbing the stable ground, with less labor. The purpose is to provide a retaining wall construction method for slopes that can protect slopes.
（課題を達成するための手段）
上述の如き従来の問題を解決し、所期の目的を達成する
本発明の法面用擁壁工法の特徴は法面の地山内に一定間
陽毎にアンカー孔を削孔し、該アンカー孔内にアンカー
コンクリートを打設するとともに該コンクリートに引張
材の先端部を埋設固定させ、前記法面に多角形状をした
平板部の表面に補強リプが一体形成されるとともにその
平板部の幅方向にプレストレスが付与され、かつ中央部
分に表裏に貫通開口させた引張材挿通孔を有するプレキ
ャストコンクリート版を多数並べ互いに連結させて設置
し、該各プレキャストコンクリート版の引張材挿通孔に
前記引張材の突出側端部を挿通させ、その各引張材をプ
レキャストコンクリート版の表面側にて緊張し、該プレ
キャストコンクリート版に定着させることにある。(Means for achieving the object) The feature of the slope retaining wall construction method of the present invention, which solves the conventional problems as described above and achieves the intended purpose, is that the slope retaining wall construction method of the present invention solves the conventional problems as described above and achieves the intended purpose. A hole is drilled, anchor concrete is poured into the anchor hole, and the tip of the tensile material is buried and fixed in the concrete, and a reinforcing lip is integrally formed on the surface of the polygonal flat plate part on the slope. At the same time, a large number of precast concrete slabs, each of which is prestressed in the width direction of the flat plate part and has a tensile material insertion hole opened on the front and back sides in the central part, are arranged and connected to each other, and each of the precast concrete slabs is The projecting ends of the tension members are inserted into the tension member insertion holes, and each of the tension members is tensioned on the surface side of the precast concrete slab to be fixed to the precast concrete slab.
（作用）
この工法はプレストレスを付与したプレキャストコンク
リート版を使用するものであるため、薄型に成型しても
それ自体が弾力を有し、これを多数並べて敷設し、その
それぞれをアンカー孔内に端部を埋設固定した引張材に
より緊張して定着させることにより、各ブレキャストコ
ンクリート版の底面により地山面が弾性的に押圧される
こととなり、しかも各プレキャストコンクリート版相互
間が連結されているため、全面が一体となった薄いコン
クリート版によって覆う状態に擁壁が形成される。(Function) This construction method uses prestressed precast concrete slabs, so even if they are formed into a thin shape, they have elasticity themselves.Many of them are laid side by side, and each is inserted into the anchor hole. By fixing the ends under tension with a tensile material buried and fixed, the bottom of each precast concrete slab elastically presses against the ground surface, and each precast concrete slab is connected to each other. Therefore, a retaining wall is formed by covering the entire surface with a thin concrete slab.
（実施例） 次に本発明の実施の一例を図面について説明する。(Example) Next, an example of implementation of the present invention will be described with reference to the drawings.
まず、第１図〜第３図について本発明に使用するプレス
トレスを付与したプレキャストコンクリート版（以下２
８０版と記す）１０について説明する。First, with regard to Figures 1 to 3, we will begin with the precast concrete slabs (hereinafter referred to as 2
10 (referred to as 80th edition) will be explained.
この２８０版１０は平面が正方形状の平板部１１を有し
、その平板部１１の表面に十字状配置に補強リブが一体
成形されている。補強リブ１２は互いに交差する中央部
分が高くなるように傾斜しており、その互いに十字状に
交差する中心位置に凹陥部１３が形成され、その凹陥部
１３の中央に裏面に貫通開口された引張材挿通孔１４が
形成されている。平板部１１はその四隅部１１ａの厚み
が最も薄く、補強リブ１２に近づくに従って順に厚くな
るように四方に傾斜面１１ｂ、ｆｌｂ・・・・・・が形
成されている。This 280 version 10 has a flat plate part 11 with a square plane, and reinforcing ribs arranged in a cross-shape are integrally molded on the surface of the flat plate part 11. The reinforcing ribs 12 are inclined so that the center portions where they intersect with each other are higher, and a recessed portion 13 is formed at the central position where the reinforcing ribs 12 intersect with each other in a cross shape. A material insertion hole 14 is formed. The flat plate part 11 has slopes 11b, flb, .
補強リプ１２下には、平板部１１の一方縁から他方縁し
に向けてプレストレス鋼材（以下ＰＣ鋼材と記す）１５
が互いに十字状にクロスする配置に挿通されており、そ
の両端部を平板部１１の両縁に緊張させた状態で定着さ
せており、これによって縦横にプレストレスが付与され
ている。Under the reinforcing lip 12, a prestressed steel material (hereinafter referred to as PC steel material) 15 is placed from one edge of the flat plate portion 11 to the other edge.
are inserted in such a manner that they cross each other in a criss-cross pattern, and both ends thereof are fixed under tension to both edges of the flat plate portion 11, thereby applying prestress in the vertical and horizontal directions.
平板部１１の四方には、アンカーナツト１６．１６・・
・が埋設され、これにボルト１７をねじ込んで連結金具
１８が固定されるようにしている。Anchor nuts 16, 16...
* is buried, and a bolt 17 is screwed into this to fix the connecting fitting 18.
次にこのように構成される２８０版１０を使用して施工
する工法を第４図以下の図面について説明する。Next, a construction method using the 280 plate 10 constructed as described above will be explained with reference to the drawings from FIG. 4 onwards.
まず施工しようとする法面の下縁部に場所打ちにより基
礎コンクリート２０を打設するとともに、ケージング（
図示せず）を押し込みつつアンカー孔２２を削孔する。First, foundation concrete 20 is cast in place at the lower edge of the slope where construction is to be performed, and casing (
(not shown) while drilling the anchor hole 22.
このアンカー孔２２は、後に敷設する２８０版１０の引
張材挿通孔１４に対応させた位置に削孔する。This anchor hole 22 is drilled at a position corresponding to the tensile material insertion hole 14 of the 280 plate 10 to be installed later.
次いでセメントミルクからなるグラウト２３を注入した
後、コルゲートシース２４を挿入し、ケージングを一定
長さだけ引き抜いた状態でグラウト２３を更に注入し、
その後ケージングを引き抜き、コルゲートシース２４内
にグラウト２３を注入の後、引張材２５を挿入する。こ
の引張材２５は合成樹脂シース２５ａ内にＰＣ鋼撚線２
５ｂを挿通じ、先端の定着長部分のみを合成樹脂シース
２５ａから突出させ、テーピングにより合成樹脂シース
２５ａ内にはグラウト２３が侵入しないようにして挿入
する。Next, after injecting grout 23 made of cement milk, corrugate sheath 24 is inserted, and with the casing pulled out a certain length, grout 23 is further injected.
Thereafter, the casing is pulled out, grout 23 is injected into corrugated sheath 24, and tensile material 25 is inserted. This tensile material 25 has PC steel strands 2 inside a synthetic resin sheath 25a.
5b is inserted through the grout so that only the fixed length portion at the tip protrudes from the synthetic resin sheath 25a, and the grout 23 is inserted into the synthetic resin sheath 25a by taping to prevent it from entering.
このようにしてアンカー孔２２内に打設したコンクリー
ト内に引張材２５の先端を定着させた後、２８０版１０
を法面の表面に目地間隔を隔てて多数敷設し、各２８０
版１０毎にその引張材挿通孔１４に引張材２５の端部を
挿通させる。一方、各２３０版１０．１０間は互いに隣
り合うもの同志の連結金具１８．１８をボルト２６によ
り連結する。また各２３０版１０．１０・・・間の縦方
向の連結部分の裏面には、法面の上下に連結させて通水
マット２７を敷設する。なお、この通水マット２７は表
面に樋状の通水管２８が固着されているものを使用し、
その通水管２８を２８０版１０．１０間の目地部分２９
内に挿入させる。After fixing the tip of the tensile material 25 in the concrete cast in the anchor hole 22 in this way, the 280 plate 10
A large number of
The end of the tensile material 25 is inserted into the tensile material insertion hole 14 of each plate 10. On the other hand, between the 230 plates 10 and 10, adjacent connecting fittings 18 and 18 are connected by bolts 26. Further, on the back side of the vertical connecting portion between each of the 230 editions 10, 10..., a water-permeable mat 27 is laid so as to be connected to the upper and lower sides of the slope. Note that this water passage mat 27 has a gutter-shaped water passage pipe 28 fixed to its surface.
The water pipe 28 is connected to the joint part 29 between 280 plates 10 and 10.
insert it inside.
このように各２３０版１０．１０・・・を互いに連結し
て敷設した後、その各２３０版１ｏの中央部分より突出
している引張材２４の端部を油圧ジヤツキを使用して引
張し、その状態を維持させて定着具３０により端部を２
８０版１０の凹陥部１３内に定着させる。然る後、目地
部分２９内に目地コンクリート３１を充填して全体を一
体化させた一枚の擁壁となす。After connecting and laying the 230 plates 10, 10... in this way, the end of the tension member 24 protruding from the center of each 230 plate 1o is pulled using a hydraulic jack. While maintaining the condition, fix the ends by the fixing tool 30.
It is fixed in the concave portion 13 of the 80 plate 10. After that, joint concrete 31 is filled in the joint portion 29 to form a single retaining wall that integrates the entire wall.
なお擁壁の最上端部には必要に応じて第７図に示すよう
に短形状のプレキャスト版３２を連結して敷設し、被覆
コンクリート３３を打設する。In addition, if necessary, as shown in FIG. 7, short precast plates 32 are connected and laid at the uppermost end of the retaining wall, and a covering concrete 33 is poured.
このようにして造成された擁壁はＰｓＣ版ｌ。The retaining wall constructed in this way is PsC version l.
自体に弾性があり、これを引張材２５によりアンカーに
緊張定着しているため法面を常に押圧している状態とな
る。Since it has elasticity and is fixed under tension to the anchor by the tension member 25, it is constantly pressed against the slope.
（発明の効果）
上述の如く本発明の法面用擁壁工法は、２８０版を互い
に連結させて敷設し、その各２８０版を地中アンカーに
連結した引張材により緊張して定着させるようにしたこ
とにより、肉厚の小さい２３０版により弾性をもたせて
法面の地山を圧することとなりしかも地山を削らないで
施工できるため、地山の安定度を損ねることがなく、よ
り安定度の高い法面保護がなされる。また２３０版は薄
型で軽量のものを使用することができ、従来工法に比べ
て資材の搬入、設置が容易になり、作業性良く工事を行
うことができることとなったものである。(Effects of the Invention) As described above, the slope retaining wall construction method of the present invention involves laying 280 plates connected to each other, and fixing each 280 plate under tension by tension members connected to underground anchors. As a result, the 230 plate, which has a small wall thickness, has elasticity and compresses the ground on the slope, and it can be constructed without scraping the ground, so the stability of the ground is not compromised and the stability is improved. High slope protection is provided. In addition, the 230 plate can be used as a thin and lightweight material, making it easier to carry in and install materials than with conventional construction methods, making construction work more efficient.
第１図は２３０版の平面図、第２図は同側面図、第３図
は第１図中のＩ−Ｉ線断面図、第４図擁壁の縦断面図、
第５図は同正面図、第６図は擁壁の一部切り書き拡大正
面−１第７図は第６図中の■−ｎ線断面図、第８図は同
１１線断面図である。
１０・・・・・・プレキャストコンクリート版（２３０
版）、１１・・・・・・平板部、１２・旧・・補強リブ
、１３・・・・・・凹陥部、１４・・・・・・引張材挿
通孔、１５・・・・・・ｐｃｍ材、１６・・・・・・ア
ンカーナツト、１８・旧・・連結金具、２２・・・・・
・アンカー孔、２３・・・・・・グラウト、２４・・・
・・・コルゲートシース、２５・・・・・・引張材、２
７・・・・・・通水マット、３０・・・・・・定着具、
３１・・・・・・目地コンクリート。Figure 1 is a plan view of the 230th edition, Figure 2 is a side view of the same, Figure 3 is a sectional view taken along the line I-I in Figure 1, Figure 4 is a longitudinal sectional view of the retaining wall,
Fig. 5 is a front view of the same, Fig. 6 is a partially cut out enlarged front view of the retaining wall - 1 Fig. 7 is a cross-sectional view taken along the line ■-n in Fig. 6, and Fig. 8 is a cross-sectional view taken along the line 11 in Fig. 6. . 10... Precast concrete version (230
version), 11... Flat plate part, 12... Old reinforcing rib, 13... Recessed part, 14... Tensile material insertion hole, 15... PCM material, 16... Anchor nut, 18. Old... Connecting fittings, 22...
・Anchor hole, 23... Grout, 24...
... Corrugated sheath, 25 ... Tensile material, 2
7...Water-permeable mat, 30...Fixing tool,
31... Joint concrete.
Claims (1)
ンカー孔内にアンカーコンクリートを打設するとともに
該コンクリートに引張材の先端部を埋設固定させ、前記
法面に多角形状をした平板部の表面に補強リブが一体形
成されるとともにその平板部の幅方向にプレストレスが
付与され、かつ中央部分に表裏に貫通開口させた引張材
挿通孔を有するプレキャストコンクリート版を多数並べ
互いに連結させて設置し、該各プレキャストコンクリー
ト版の引張材挿通孔に前記引張材の突出側端部を挿通さ
せ、その各引張材をプレキャストコンクリート版の表面
側にて緊張し、該プレキャストコンクリート版に定着さ
せることを特徴としてなる法面擁壁工法。Anchor holes are drilled at regular intervals in the ground of the slope, and anchor concrete is poured into the anchor holes, and the tip of the tensile material is buried and fixed in the concrete, so that a polygonal shape is formed on the slope. Reinforcing ribs are integrally formed on the surface of the flat plate part, prestress is applied in the width direction of the flat plate part, and a large number of precast concrete slabs are arranged and connected to each other, each having a tensile material insertion hole in the center that is opened on the front and back sides. The projecting end of the tensile material is inserted into the tensile material insertion hole of each precast concrete slab, and each tensile material is tensioned on the surface side of the precast concrete slab and fixed to the precast concrete slab. The slope retaining wall construction method is characterized by
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4936088A JPH01223219A (en) | 1988-03-02 | 1988-03-02 | Retaining wall construction for slope surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4936088A JPH01223219A (en) | 1988-03-02 | 1988-03-02 | Retaining wall construction for slope surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01223219A true JPH01223219A (en) | 1989-09-06 |
| JPH0528287B2 JPH0528287B2 (en) | 1993-04-23 |
Family
ID=12828853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4936088A Granted JPH01223219A (en) | 1988-03-02 | 1988-03-02 | Retaining wall construction for slope surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01223219A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0711659A (en) * | 1993-06-28 | 1995-01-13 | Kensetsu Kiso Eng Co Ltd | Anchoring of retaining wall |
| CN107268530A (en) * | 2017-06-28 | 2017-10-20 | 防城港市长歧水利管理所 | A kind of reservoir slope water and soil fixing device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS523284U (en) * | 1975-06-24 | 1977-01-11 | ||
| JPS54118602A (en) * | 1978-03-06 | 1979-09-14 | Yuuji Kawai | Method of executing slope face protective construction |
-
1988
- 1988-03-02 JP JP4936088A patent/JPH01223219A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS523284U (en) * | 1975-06-24 | 1977-01-11 | ||
| JPS54118602A (en) * | 1978-03-06 | 1979-09-14 | Yuuji Kawai | Method of executing slope face protective construction |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0711659A (en) * | 1993-06-28 | 1995-01-13 | Kensetsu Kiso Eng Co Ltd | Anchoring of retaining wall |
| CN107268530A (en) * | 2017-06-28 | 2017-10-20 | 防城港市长歧水利管理所 | A kind of reservoir slope water and soil fixing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0528287B2 (en) | 1993-04-23 |
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