JP2000186326A - Slope stabilizing method - Google Patents
Slope stabilizing methodInfo
- Publication number
- JP2000186326A JP2000186326A JP10361721A JP36172198A JP2000186326A JP 2000186326 A JP2000186326 A JP 2000186326A JP 10361721 A JP10361721 A JP 10361721A JP 36172198 A JP36172198 A JP 36172198A JP 2000186326 A JP2000186326 A JP 2000186326A
- Authority
- JP
- Japan
- Prior art keywords
- pressure receiving
- receiving plate
- wire
- ground
- auxiliary pressure
- 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
- 230000000087 stabilizing Effects 0.000 title description 3
- 238000011105 stabilization Methods 0.000 claims description 9
- 238000005553 drilling Methods 0.000 claims description 7
- 230000035882 stress Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 11
- 238000004873 anchoring Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 8
- 238000003780 insertion Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000002093 peripheral Effects 0.000 description 4
- 239000011440 grout Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000001174 ascending Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、法面の安定化を図
るための法面安定化工法に関する。TECHNICAL FIELD The present invention relates to a slope stabilization method for stabilizing a slope.
【０００２】[0002]
【従来の技術】この法面安定化工法に関しては、従来か
らロックボルト等のアンカー手段を地盤に対して定着さ
せ、そのアンカー手段の緊張力を地盤上に設置した受圧
盤を介して地盤に伝達することにより法面の安定化を図
るという工法が広く知られている。ところで、この従来
の安定化工法においては、受圧盤を地盤上に設置する際
に、安定した設置状態を得るために設置部を平坦に整地
する作業が必要となる。したがって、受圧盤が大きい
と、その分自重が大きくなり取扱い性が悪くなるだけで
なく、広い面積を平坦に整地する必要があるため作業負
担が大きかった。なお、受圧盤を小型化すれば、自重が
小さくなり取扱い性がよくなるとともに、整地する面積
が小さいものに分散されるので平坦に仕上げる単位面積
が縮小され、作業負担が大幅に軽減されることから、整
地の必要な総面積が同じでも結果的には全体の作業負担
が軽減されることになる。しかしながら、受圧盤の数を
増やして小型化しようとすると、その分ロックボルト等
のアンカー手段を設置する箇所も増えるため、そのため
の掘削及び定着作業が増大し、かえって作業性を悪くす
ることにもなりかねない。しかも、受圧盤の小型化に応
じてアンカー手段を小型化するといっても、アンカー手
段、特に自穿孔型の場合の小型化には自ずと限界がある
ため、アンカー手段の方が受圧盤に比べて必要以上の強
度を有する不経済な場合が生じることになる。因みに、
地盤上に間隔をあけて設置された支圧板相互間をワイヤ
で連結して緊張するという安定化工法も開示されている
（特開平９−１１１７６１号公報参照）が、以上の問題
を解決し得るものではない。2. Description of the Related Art Conventionally, with respect to this slope stabilization method, an anchor means such as a rock bolt is fixed to the ground, and the tension of the anchor means is transmitted to the ground via a pressure receiving plate installed on the ground. There is widely known a construction method of stabilizing a slope by performing the method. By the way, in the conventional stabilization method, when the pressure receiving plate is installed on the ground, it is necessary to level the installation section in order to obtain a stable installation state. Therefore, when the pressure receiving plate is large, not only the weight of the pressure receiving plate becomes large and the handling property is deteriorated, but also the work load is large because it is necessary to level a wide area flat. In addition, if the pressure receiving plate is reduced in size, its own weight will be reduced and handling will be improved, and the area to be leveled will be distributed to smaller ones, so the unit area to be finished flat will be reduced, and the work load will be greatly reduced. Even if the total area required for leveling is the same, the overall work load is reduced. However, when the number of pressure receiving plates is increased and the size is reduced, the number of places for installing anchor means such as lock bolts increases accordingly, so that the excavation and anchoring work for the same increases, and the workability is rather deteriorated. It could be. In addition, even if the anchor means is downsized in accordance with the downsizing of the pressure receiving plate, the anchoring means, especially in the case of the self-piercing type, naturally has a limit, and therefore the anchoring means is compared with the pressure receiving plate. An uneconomic case with more strength than necessary will occur. By the way,
A stabilization method is also disclosed in which the supporting plates provided at intervals on the ground are connected to each other by wires and tensioned (see Japanese Patent Application Laid-Open No. 9-111761), but the above problem can be solved. Not something.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、以上のよう
な従来技術の問題点に鑑みて開発されたもので、受圧盤
の小型化を図り取扱い性や整地作業に関する改善が可能
であるとともに、アンカー手段の小型化に関する限界に
伴う前記問題点を解消し得る法面安定化工法を提供する
ことを目的とするものである。SUMMARY OF THE INVENTION The present invention has been developed in view of the above-mentioned problems of the prior art, and it is possible to reduce the size of the pressure receiving plate and improve the handling and leveling work. It is another object of the present invention to provide a slope stabilization method capable of solving the above-mentioned problems associated with the limitation on miniaturization of anchor means.
【０００４】[0004]
【課題を解決するための手段】本発明は、前記課題を解
決するため、地盤上に適宜の間隔をあけて受圧盤を設置
しアンカー手段により緊張力を作用させることにより複
数の受圧部を法面上に適宜の間隔で形成するとともに、
それらの受圧盤相互間に補助受圧盤を設置し、該補助受
圧盤を前記受圧盤相互間に張設した線材を介して地盤に
押圧することにより、受圧部を分散して法面の安定化を
図るという技術手段を採用した。本発明によれば、以上
のように各受圧部を構成するアンカー手段の緊張力を利
用して補助受圧盤を地盤に押圧するように構成したの
で、アンカー手段に対する過度の小型化を回避しなが
ら、そのアンカー手段の余力を補助受圧盤の押圧支持に
有効に活用することができ、延いては受圧盤の小型化を
図ることも可能である。According to the present invention, in order to solve the above-mentioned problems, a plurality of pressure receiving portions are formed by installing pressure receiving plates on the ground at appropriate intervals and applying tension by anchoring means. While forming at appropriate intervals on the surface,
By installing an auxiliary pressure receiving plate between the pressure receiving plates and pressing the auxiliary pressure receiving plate against the ground via a wire stretched between the pressure receiving plates, the pressure receiving portion is dispersed to stabilize the slope. The technical means of aiming was adopted. According to the present invention, as described above, the auxiliary pressure receiving plate is pressed against the ground by utilizing the tension of the anchor means constituting each pressure receiving portion, so that excessive miniaturization of the anchor means is avoided. The remaining force of the anchoring means can be effectively used for supporting the auxiliary pressure receiving plate by pressing, so that the pressure receiving plate can be reduced in size.
【０００５】特に、前記アンカー手段として自穿孔型の
ロックボルトを用いる場合には、それ自体で地盤を穿孔
する関係から、穿孔ロッドとしての最低限度の太さが必
要なため、小さい受圧盤のためのアンカー手段としては
過大な強度を有することになる。したがって、前述のよ
うに、その余力を補助受圧盤の押圧支持に活用すればき
わめて有効であり経済性がよい。しかも、受圧部が受圧
盤と補助受圧盤に分散されるので小型化が図れ、その取
扱い性や整地作業の作業性も改善できる。さらに、自穿
孔型の場合には大きな削孔は形成されないので、周囲の
樹木等に対する影響も少なくて済むことになる。なお、
前記線材に張力を付与するための緊張方法としては、前
記線材の途中にターンバックル等の緊張手段を設け、そ
の緊張手段を介して線材に張力を付与するという方法が
可能である。また、前記補助受圧盤に線材を押上げるジ
ャッキ機構を設け、そのジャッキ機構により線材を押上
げて張力を付与するという方法も可能である。[0005] In particular, when a self-piercing type lock bolt is used as the anchoring means, a minimum thickness of a piercing rod is required because the piercing the ground by itself, so that a small pressure receiving plate is required. Will have excessive strength as an anchor means. Therefore, as described above, it is extremely effective and economical to utilize the remaining power for pressing and supporting the auxiliary pressure receiving plate. In addition, since the pressure receiving portion is distributed between the pressure receiving plate and the auxiliary pressure receiving plate, the size can be reduced, and the handling property and workability of the leveling work can be improved. Further, in the case of the self-drilling type, since a large hole is not formed, the influence on surrounding trees and the like can be reduced. In addition,
As a tensioning method for applying tension to the wire, a method in which tensioning means such as a turnbuckle is provided in the middle of the wire and tension is applied to the wire via the tensioning means is possible. A method is also possible in which a jack mechanism for pushing up a wire is provided on the auxiliary pressure receiving plate, and tension is applied by pushing up the wire with the jack mechanism.
【０００６】[0006]
【発明の実施の形態】前記受圧盤及び補助受圧盤の具体
的構成に関しては特に限定されないが、人手あるいは補
助治具を使用して人力により移動できる数十Ｋｇ程度の
重量に設定すれば、取扱い性が良好で作業性を大幅に改
善できる。アンカー手段としては、自穿孔型のロックボ
ルトのほか、他穿孔型のロックボルトや各種のアンカー
テンドンを使用するものなどの採用が可能である。ま
た、線材としては、防錆処理や防錆被覆を施した金属製
のワイヤのほか、必要な引張強度を有するものであれば
他の素材により形成されたものも採用可能である。な
お、線材の受圧盤に対する固定は、その受圧盤を構成す
る部材自体に固定してもよいし、受圧盤の中央部に位置
するアンカー手段の頭部に固定するものであってもよ
い。補助受圧盤の地盤に対する押圧力の付与は、線材の
中間に設けたターンバックル等の緊張手段や、各補助受
圧盤に設けたジャッキ機構を介して簡便に行うことがで
きる。また、それらの緊張手段とジャッキ機構を併用す
ることも可能である。なお、前記受圧盤や補助受圧盤
は、鋼板等の金属製のほか、耐候性を有する適宜の素材
を用いて形成することができる。また、補助受圧盤の設
置位置に関しては、受圧盤相互間に張設される線材の下
方であれば適宜の位置を選定することが可能である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The specific structure of the pressure receiving plate and the auxiliary pressure receiving plate is not particularly limited. However, if the weight is set to about several tens kg, which can be moved manually or manually by using an auxiliary jig, handling is possible. Good workability and can greatly improve workability. As the anchor means, in addition to the self-drilling type lock bolt, other drilling type lock bolts and those using various types of anchor rods can be adopted. In addition, as the wire material, in addition to a metal wire having a rust-proofing treatment or a rust-proof coating, a wire made of another material having a necessary tensile strength can be used. In addition, the wire may be fixed to the pressure receiving plate by fixing the member constituting the pressure receiving plate itself, or by fixing the wire to the head of the anchor means located at the center of the pressure receiving plate. The pressing force of the auxiliary pressure receiving plate against the ground can be easily provided via a tensioning means such as a turn buckle provided in the middle of the wire and a jack mechanism provided on each auxiliary pressure receiving plate. It is also possible to use the tensioning means and the jack mechanism together. The pressure receiving plate and the auxiliary pressure receiving plate can be formed by using an appropriate material having weather resistance in addition to a metal such as a steel plate. Regarding the installation position of the auxiliary pressure receiving plate, an appropriate position can be selected as long as it is below the wire stretched between the pressure receiving plates.
【０００７】[0007]
【実施例】以下、図面を用いて本発明の実施例に関して
説明する。図１は本発明に係る一実施例の施工状態を示
した施工説明図である。図中、１は前記アンカー手段を
構成する自穿孔型のロックボルトであり、本実施例では
このロックボルト１を用いて法面を構成する地盤２上に
適宜間隔をあけて設置される受圧盤３を地盤２に対して
押圧した状態に定着する。すなわち、公知のように、先
ず受圧盤３の設置位置にロックボルト１をその先端に設
けた穿孔チップにより所定の深さまで自穿孔させた後グ
ラウト材を注入し、そのグラウト材の固化を待って受圧
盤３をその中央部に前記ロックボルト１を挿通させた状
態に設置した上、同ロックボルト１を緊張することによ
り、その緊張力によって受圧盤３を地盤２に対して押圧
した状態に定着させる。そして、図示のように、それら
の受圧盤３の相互間の地盤２上に補助受圧盤４を設置し
て、それぞれの補助受圧盤４の上部に設けた掛止部５に
対して、前記受圧盤３相互間に張設されたスチールワイ
ヤ等の線材６の途中を掛止した上、その線材６の中間に
接続したターンバックル７等の緊張手段を介して張力を
付与することによって、前記補助受圧盤４を地盤２に対
して押圧支持することになる。すなわち、ターンバック
ル７を締めて線材６に適度の張力を付与し、その張力の
地盤２に垂直方向の分力により前記補助受圧盤４を地盤
２に対して押圧する。したがって、ロックボルト１の緊
張力を受圧盤３及び補助受圧盤４の受圧力、すなわちそ
れぞれの押圧力に分散することができるので、ロックボ
ルト１の緊張力の有効活用が可能となる。また、受圧部
材の小型化が可能となり取扱い性が向上するとともに、
それらの受圧面積の縮小が可能になり整地作業の作業負
担も軽減される。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a construction explanatory view showing a construction state of an embodiment according to the present invention. In the drawings, reference numeral 1 denotes a self-drilling type lock bolt constituting the anchor means, and in this embodiment, a pressure receiving plate which is installed at appropriate intervals on the ground 2 constituting a slope using the lock bolt 1. 3 is fixed to the ground 2 in a pressed state. That is, as is well known, first, the lock bolt 1 is self-drilled to a predetermined depth by the drilling tip provided at the tip thereof at the installation position of the pressure receiving plate 3, and then the grout material is injected, and the solidification of the grout material is awaited. The pressure receiving plate 3 is set in a state where the lock bolt 1 is inserted through the center thereof, and the lock bolt 1 is tensioned to fix the pressure receiving plate 3 against the ground 2 by the tension. Let it. Then, as shown in the drawing, auxiliary pressure receiving plates 4 are installed on the ground 2 between the pressure receiving plates 3, and the pressure receiving plates 5 are provided on the upper portions of the respective auxiliary pressure receiving plates 4. The above-mentioned auxiliary is provided by hooking a wire 6 such as a steel wire stretched between the boards 3 and applying tension through a tensioning means such as a turnbuckle 7 connected to the middle of the wire 6. The pressure receiving plate 4 is pressed and supported against the ground 2. That is, the turnbuckle 7 is tightened to apply an appropriate tension to the wire 6, and the auxiliary pressure receiving plate 4 is pressed against the ground 2 by a vertical component of the tension applied to the ground 2. Therefore, since the tension of the lock bolt 1 can be distributed to the receiving pressures of the pressure receiving plate 3 and the auxiliary pressure receiving plate 4, that is, the respective pressing forces, the tension of the lock bolt 1 can be effectively used. In addition, downsizing of the pressure receiving member becomes possible, and handleability is improved.
The pressure receiving area can be reduced, and the work load of the leveling work can be reduced.
【０００８】図２及び図３は前記受圧盤３を拡大して示
したもので、図２はその正面図、図３は平面図を示した
ものである。図示のように、本実施例の受圧盤３は、円
形状の平板８と、その中央部に立設した筒状部９と、該
筒状部９から放射状に設けられ周辺部にむけて順次低く
なるように形成したリブ板１０から形成されている。こ
れらの平板８、筒状部９、リブ板１０は鋼板等から構成
され、それぞれ溶接等により一体的に固着されている。
また、リブ板１０の筒状部９側の下方にはそれぞれ凹部
１１が形成されており、図示のように、それらの凹部１
１を介して線材６を筒状部９に巻いた状態に固着した
上、斜め上方に張設できるように構成されている。な
お、平板８の中央部には、前記ロックボルト１等のアン
カー手段の挿通孔１２が形成されている。また、その周
辺部寄りには適数の挿通孔１３が形成されており、それ
らの挿通孔１３を介して固定ピン１４を打込むことによ
り受圧盤３をより確実に固定し得るように構成されてい
る。2 and 3 are enlarged views of the pressure receiving plate 3, FIG. 2 is a front view thereof, and FIG. 3 is a plan view thereof. As shown in the drawing, the pressure receiving plate 3 of the present embodiment has a circular flat plate 8, a tubular portion 9 erected at the center thereof, and a radially provided from the tubular portion 9 to a peripheral portion. It is formed from a rib plate 10 formed to be lower. The flat plate 8, the cylindrical portion 9, and the rib plate 10 are made of a steel plate or the like, and are integrally fixed by welding or the like.
In addition, concave portions 11 are formed below the rib portion 10 on the side of the cylindrical portion 9, respectively.
The wire 6 is fixedly wound around the cylindrical portion 9 via the first wire 1 and can be extended obliquely upward. In the center of the flat plate 8, an insertion hole 12 for an anchor means such as the lock bolt 1 is formed. An appropriate number of insertion holes 13 are formed near the periphery thereof, and the pressure receiving plate 3 can be more securely fixed by driving a fixing pin 14 through the insertion holes 13. ing.
【０００９】図４は前記受圧盤３の設置状態を拡大して
示した施工説明図である。前述のように、地盤２の所定
位置にロックボルト１が設置され、注入されたグラウト
材が固化した場合には、受圧盤３の設置作業に移行す
る。この受圧盤３の設置作業においては、図示のよう
に、受圧盤３をその平板８の中央部に形成した挿通孔１
２にロックボルト１を挿通させた状態にセットし、しか
る後、公知のように前記平板８の上方からナット１５を
用いて締付けることによりロックボルト１に所定の緊張
力を付与して受圧盤３を定着させるとともに、ロックボ
ルト１の頭部を防錆キャップ１６によりカバーすること
になる。この場合、本実施例においては、ナット１５及
び防錆キャップ１６は前記筒状部９の内方に配置され
る。そして、前記固定ピン１４を用いて平板８を地盤２
により確実に固定することにより受圧盤３の設置作業を
終了する。なお、図５は他の実施例を示したもので、図
示のように、前記筒状部９の上部に座金１７をセット
し、その座金１７の上部からナット１５を用いて締付け
てロックボルト１に所定の緊張力を付与し、その頭部を
防錆キャップ１６によりカバーするようにしてもよい。FIG. 4 is a construction explanatory view showing an enlarged installation state of the pressure receiving plate 3. As described above, when the lock bolt 1 is installed at a predetermined position on the ground 2 and the injected grout material is solidified, the operation shifts to the operation of installing the pressure receiving plate 3. In the installation work of the pressure receiving plate 3, as shown in FIG.
The lock bolt 1 is set in a state in which the lock bolt 1 is inserted through the plate 2, and then a predetermined tension is applied to the lock bolt 1 by tightening the lock bolt 1 from above the flat plate 8 using a nut 15 in a known manner. And the head of the lock bolt 1 is covered with the rust-proof cap 16. In this case, in the present embodiment, the nut 15 and the rust prevention cap 16 are arranged inside the tubular portion 9. Then, the flat plate 8 is fixed to the ground 2 using the fixing pins 14.
Thus, the fixing work of the pressure receiving plate 3 is completed. FIG. 5 shows another embodiment. As shown in the drawing, a washer 17 is set on the upper portion of the tubular portion 9 and tightened from above the washer 17 using a nut 15 to lock the bolt 1. May be applied with a predetermined tension, and the head may be covered with a rust-proof cap 16.
【００１０】図６及び図７は前記補助受圧盤４を拡大し
て示したもので、図６はその正面図、図７は平面図を示
したものである。図示のように、本実施例の補助受圧盤
４は、円形状の平板１８と、その中央部に立設した筒状
部１９と、該筒状部１９から放射状に設けられ周辺部に
むけて順次低くなるように形成したリブ板２０から形成
されている。これらの平板１８、筒状部１９、リブ板２
０は鋼板等から構成され、それぞれ溶接等により一体的
に固着されている。そして、筒状部１９の上部の内方に
は、上面に前記線材６に係合する掛止溝２１を形成した
掛止部材２２の嵌入部２３が嵌入され、前記掛止部５を
構成している。また、平板１８の周辺部寄りには適数の
挿通孔２４が形成され、固定ピン２５を打込むことによ
り補助受圧盤４をより確実に固定し得るように構成され
ている。図８は前記掛止部材２２を拡大して示した平面
図である。図示のように、本実施例では掛止溝２１が放
射状に６本形成されており、３本の線材６に対応し得る
ように構成されている。なお、それらの掛止溝２１に関
しては、３本の線材６が同じ高さに競合しないように直
線上に並ぶ３組の掛止溝２１の深さをそれぞれ変えてい
る。なお、図９は掛止部材に関する他の実施例を拡大し
て示した平面図であり、図示のように２本の線材６に対
応し得るように４本の掛止溝２６を放射状に形成するこ
とも可能である。FIGS. 6 and 7 are enlarged views of the auxiliary pressure receiving plate 4, FIG. 6 is a front view thereof, and FIG. 7 is a plan view thereof. As shown in the figure, the auxiliary pressure receiving plate 4 of this embodiment has a circular flat plate 18, a tubular portion 19 erected at the center thereof, and is provided radially from the tubular portion 19 toward a peripheral portion. It is formed from a rib plate 20 which is formed so as to be gradually lower. These flat plate 18, tubular portion 19, rib plate 2
Numeral 0 is made of a steel plate or the like, and is integrally fixed by welding or the like. A fitting portion 23 of a locking member 22 having a locking groove 21 for engaging with the wire 6 is formed on the upper surface of the upper portion of the tubular portion 19. ing. A suitable number of insertion holes 24 are formed near the periphery of the flat plate 18 so that the auxiliary pressure receiving plate 4 can be more securely fixed by driving the fixing pins 25. FIG. 8 is an enlarged plan view of the engaging member 22. FIG. As shown in the figure, in the present embodiment, six hooking grooves 21 are formed radially, and are configured to be able to correspond to three wire rods 6. Note that the depths of the three sets of hooking grooves 21 arranged on a straight line are changed so that the three wire rods 6 do not compete at the same height. FIG. 9 is an enlarged plan view showing another embodiment relating to the hooking member, and four hooking grooves 26 are formed radially so as to correspond to two wires 6 as shown. It is also possible.
【００１１】図１０は本発明に係る他の実施形態に関す
る一実施例の施工状態を示した施工説明図である。図示
のように、本実施例は、前述の実施例と比べて補助受圧
盤に関する具体的構成が異なるだけで、他の受圧盤３や
線材６などに関しては同様の構成が採用されているの
で、以下の説明においては、補助受圧盤２７を中心に説
明し、前記実施例と同様の構成部分には同じ符号を付し
て説明する。本実施例の場合には、補助受圧盤２７に線
材６を押上げるためのジャッキ機構２８が設けられてお
り、そのハンドル２９を回転操作して上方に設けた掛止
部３０に係合した線材６を押上げることにより同線材６
に所定の張力を付与するように構成した点で特徴を有
し、その線材６の張力の地盤２に対して垂直方向の分力
によって補助受圧盤２７自体を地盤２に押圧するもので
ある。そして、以上によりロックボルト１の緊張力を受
圧盤３と補助受圧盤２７に分散することができ、ロック
ボルト１の緊張力の有効活用が可能となり、また受圧部
材の小型化により取扱い性が向上するとともに、それら
の受圧面積の縮小によって整地作業の作業負担を軽減し
得る点は、前述の実施例の場合と同様である。FIG. 10 is an explanatory drawing showing the construction state of an embodiment according to another embodiment of the present invention. As shown in the drawing, the present embodiment differs from the above-described embodiment only in the specific configuration regarding the auxiliary pressure receiving plate, and the same configuration is adopted for the other pressure receiving plates 3 and the wire rods 6. In the following description, the auxiliary pressure receiving plate 27 will be mainly described, and the same components as those in the above embodiment will be denoted by the same reference numerals. In the case of this embodiment, a jack mechanism 28 for pushing up the wire 6 is provided on the auxiliary pressure receiving plate 27, and the handle 29 is rotated to engage with the hook 30 provided above. 6 by pushing up
The auxiliary pressure receiving plate 27 itself is pressed against the ground 2 by a vertical component of the tension of the wire 6 with respect to the ground 2. As described above, the tension of the lock bolt 1 can be distributed to the pressure receiving plate 3 and the auxiliary pressure receiving plate 27, so that the tension of the lock bolt 1 can be effectively used, and handling is improved by downsizing the pressure receiving member. In addition, the point that the work load of the leveling work can be reduced by reducing the pressure receiving area is the same as in the case of the above-described embodiment.
【００１２】図１１〜図１３は前記補助受圧盤２７を拡
大して示したもので、図１１はその分解組立図、図１２
は下降状態を示した状態説明図、図１３は上昇状態を示
した状態説明図である。図１１に示したように、本実施
例の補助受圧盤２７は、円形状の平板３１と、その中央
部に立設した筒状部３２と、該筒状部３２から放射状に
設けられ周辺部にむけて形成した低めのリブ板３３から
形成されている。これらの平板３１、筒状部３２、リブ
板３３は鋼板等から構成され、それぞれ溶接等により一
体的に固着されており、筒状部３２のリブ板３３より上
方には雄ネジ３４が形成されている。そして、筒状部３
２の雄ネジ３４に対しては前記ハンドル２９の中央内部
に形成された雌ネジ３５が螺合可能に構成され、これら
によって前記ジャッキ機構２８が構成されている。ま
た、ハンドル２９の上部には、前記雄ネジ３４の外周部
に遊嵌し得る内径の外嵌部３６を介して掛止部材３７が
外嵌載置され、ハンドル２９の回転操作に応じて昇降し
得るように構成されている。なお、掛止部材３７の上面
には、前記掛止部材２２の上面に形成した掛止溝２１と
同様に４本あるいは６本の放射状の掛止溝３８が形成さ
れ、前記掛止部３０を構成している。11 to 13 are enlarged views of the auxiliary pressure receiving plate 27. FIG. 11 is an exploded view of the auxiliary pressure receiving plate 27, and FIG.
Is a state explanatory view showing a descending state, and FIG. 13 is a state explanatory view showing an ascending state. As shown in FIG. 11, the auxiliary pressure receiving plate 27 of this embodiment includes a circular flat plate 31, a cylindrical portion 32 erected at the center thereof, and a peripheral portion provided radially from the cylindrical portion 32. It is formed from a lower rib plate 33 formed in the direction of the arrow. The flat plate 31, the tubular portion 32, and the rib plate 33 are made of a steel plate or the like, and are integrally fixed by welding or the like, and a male screw 34 is formed above the rib plate 33 of the tubular portion 32. ing. And the cylindrical part 3
A female screw 35 formed inside the center of the handle 29 can be screwed into the second male screw 34, and these constitute the jack mechanism 28. A hooking member 37 is mounted on the upper portion of the handle 29 via an outer fitting portion 36 having an inner diameter that can be loosely fitted to the outer peripheral portion of the male screw 34. It is configured to be able to. In addition, four or six radial locking grooves 38 are formed on the upper surface of the locking member 37 in the same manner as the locking groove 21 formed on the upper surface of the locking member 22. Make up.
【００１３】しかして、本実施例の補助受圧盤２７を設
置する場合には、図１２に示した低い下降状態において
補助受圧盤２７を所定の設置位置にセットし、前記掛止
溝３８に前記線材６を掛止させた上、ハンドル２９を回
転操作して掛止部材３７を図１３に示したように上方へ
徐々に上昇させることにより線材６に所定の張力を付与
し、前述のようにその張力の垂直方向の分力により補助
受圧盤２７を地盤２に押圧支持することになる。When the auxiliary pressure receiving plate 27 of the present embodiment is installed, the auxiliary pressure receiving plate 27 is set at a predetermined installation position in the low descending state shown in FIG. After the wire 6 is hooked, a predetermined tension is applied to the wire 6 by rotating the handle 29 to gradually raise the hook member 37 upward as shown in FIG. The auxiliary pressure receiving plate 27 is pressed and supported on the ground 2 by the vertical component of the tension.
【００１４】[0014]
【発明の効果】本発明によれば、次の効果を得ることが
できる。 （１）各受圧盤を固定するアンカー手段の緊張力を有効
に活用して補助受圧盤を地盤に押圧支持するように構成
したので、アンカー手段に対する過度の小型化を回避し
ながら、地盤に対する受圧部を受圧盤及び補助受圧盤に
分散してそれらの小型化を図ることが可能である。 （２）したがって、受圧盤や補助受圧盤の自重を小さく
設定できるので、その取扱い性が向上し作業性を改善で
きる。 （３）また、受圧盤や補助受圧盤の小型化により、平坦
に整地する必要のある単位面積が縮小されるので、その
作業負担が大幅に改善される。 （４）特に、アンカー手段として自穿孔型のロックボル
トを用いる場合には、それ自体で地盤に穿孔する関係で
穿孔ロッドとしての最低限度の太さが必要なことから、
小さい受圧盤のためのアンカー手段としては過大な強度
になる場合が生じることになるが、本発明によればその
余力を補助受圧盤の押圧支持に活用できるのできわめて
有効である。According to the present invention, the following effects can be obtained. (1) Since the auxiliary pressure receiving plate is pressed and supported on the ground by effectively utilizing the tension of the anchor means for fixing each pressure receiving plate, the pressure receiving on the ground is prevented while the anchor device is not excessively miniaturized. The parts can be distributed to the pressure receiving plate and the auxiliary pressure receiving plate to reduce their size. (2) Therefore, since the own weight of the pressure receiving plate and the auxiliary pressure receiving plate can be set small, the handling property is improved and the workability can be improved. (3) In addition, since the unit area that needs to be leveled flat is reduced by downsizing the pressure receiving plate and the auxiliary pressure receiving plate, the work load is greatly improved. (4) In particular, when a self-drilling type lock bolt is used as the anchoring means, a minimum thickness as a drilled rod is necessary because the bolt itself is drilled in the ground.
In some cases, the strength of the anchoring means for a small pressure receiving plate becomes excessively large. However, according to the present invention, the extra force can be utilized for supporting the auxiliary pressure receiving plate.
【図１】 本発明の一実施例の施工状態を示した施工説
明図である。FIG. 1 is a construction explanatory view showing a construction state of an embodiment of the present invention.
【図２】 同実施例に係る受圧盤を拡大して示した正面
図である。FIG. 2 is an enlarged front view of the pressure receiving plate according to the embodiment.
【図３】 同受圧盤を拡大して示した平面図である。FIG. 3 is an enlarged plan view of the pressure receiving plate.
【図４】 同受圧盤の設置状態を拡大して示した施工説
明図である。FIG. 4 is a construction explanatory view showing an enlarged installation state of the pressure receiving panel.
【図５】 受圧盤に関する他の実施例を拡大して示した
施工説明図である。FIG. 5 is a construction explanatory view showing another embodiment of the pressure receiving plate in an enlarged manner.
【図６】 前記実施例に係る補助受圧盤を拡大して示し
た正面図である。FIG. 6 is an enlarged front view of an auxiliary pressure receiving plate according to the embodiment.
【図７】 同補助受圧盤を拡大して示した平面図であ
る。FIG. 7 is an enlarged plan view of the auxiliary pressure receiving plate.
【図８】 前記実施例に係る掛止部材を拡大して示した
平面図である。FIG. 8 is an enlarged plan view showing a latch member according to the embodiment.
【図９】 掛止部材に関する他の実施例を拡大して示し
た平面図である。FIG. 9 is an enlarged plan view showing another embodiment relating to the hook member.
【図１０】 本発明の他の実施例の施工状態を示した施
工説明図である。FIG. 10 is a construction explanatory view showing a construction state of another embodiment of the present invention.
【図１１】 同実施例に係る補助受圧盤を拡大して示し
た分解組立図である。FIG. 11 is an exploded view showing an enlarged auxiliary pressure receiving plate according to the embodiment.
【図１２】 同補助受圧盤の下降状態を示した状態説明
図である。FIG. 12 is a state explanatory view showing a lowered state of the auxiliary pressure receiving plate.
【図１３】 同補助受圧盤の上昇状態を示した状態説明
図である。FIG. 13 is a state explanatory view showing an ascending state of the auxiliary pressure receiving plate.
１…ロックボルト、２…地盤、３…受圧盤、４…補助受
圧盤、５…掛止部、６…線材、７…ターンバックル、８
…平板、９…筒状部、１０…リブ板、１１…凹部、１
２，１３…挿通孔、１４…固定ピン、１５…ナット、１
６…防錆キャップ、１７…座金、１８…平板、１９…筒
状部、２０…リブ板、２１…掛止溝、２２…掛止部材、
２３…嵌入部、２４…挿通孔、２５…固定ピン、２６…
掛止溝、２７…補助受圧盤、２８…ジャッキ機構、２９
…ハンドル、３０…掛止部、３１…平板、３２…筒状
部、３３…リブ板、３４…雄ネジ、３５…雌ネジ、３６
…外嵌部、３７…掛止部材、３８…掛止溝DESCRIPTION OF SYMBOLS 1 ... Lock bolt, 2 ... Soil, 3 ... Pressure receiving board, 4 ... Auxiliary pressure receiving board, 5 ... Hooking part, 6 ... Wire, 7 ... Turnbuckle, 8
... flat plate, 9 ... cylindrical part, 10 ... rib plate, 11 ... concave part, 1
2, 13 ... insertion hole, 14 ... fixing pin, 15 ... nut, 1
6 rust prevention cap, 17 washer, 18 flat plate, 19 cylindrical part, 20 rib plate, 21 locking groove, 22 locking member,
23 ... fitting part, 24 ... insertion hole, 25 ... fixing pin, 26 ...
Hanging groove, 27: auxiliary pressure receiving plate, 28: jack mechanism, 29
... Handle, 30 ... Hook, 31 ... Plate, 32 ... Cylinder, 33 ... Rib, 34 ... Male screw, 35 ... Female screw, 36
... external fitting part, 37 ... locking member, 38 ... locking groove
Claims (4)
置しアンカー手段により緊張力を作用させることにより
複数の受圧部を法面上に適宜の間隔で形成するととも
に、それらの受圧盤相互間に補助受圧盤を設置し、該補
助受圧盤を前記受圧盤相互間に張設した線材を介して地
盤に押圧するように施工することを特徴とする法面安定
化工法。1. A plurality of pressure receiving portions are formed at appropriate intervals on a slope by installing pressure receiving plates on the ground at appropriate intervals and applying tension by an anchor means. A slope stabilization method comprising: installing an auxiliary pressure receiving plate between the pressure receiving plates, and pressing the auxiliary pressure receiving plate against the ground via a wire rod stretched between the pressure receiving plates.
クボルトを用いたことを特徴とする請求項１記載の法面
安定化工法。2. A slope stabilization method according to claim 1, wherein a self-drilling type lock bolt is used as said anchor means.
張手段を設け、その緊張手段を介して線材に張力を付与
することにより、前記補助受圧盤を地盤に押圧すること
を特徴とする請求項１又は２記載の法面安定化工法。3. The auxiliary pressure receiving plate is pressed against the ground by providing a tensioning means such as a turnbuckle in the middle of the wire and applying tension to the wire through the tensioning means. 3. The slope stabilization method according to 1 or 2.
キ機構を設け、そのジャッキ機構を介して線材に張力を
付与することにより、前記補助受圧盤を地盤に押圧する
ことを特徴とする請求項１〜３のいずれか一項に記載の
法面安定化工法。4. The auxiliary pressure receiving plate is provided with a jack mechanism for pushing up a wire rod, and tension is applied to the wire rod via the jack mechanism to press the auxiliary pressure receiving plate against the ground. The slope stabilization method according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10361721A JP2000186326A (en) | 1998-12-18 | 1998-12-18 | Slope stabilizing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10361721A JP2000186326A (en) | 1998-12-18 | 1998-12-18 | Slope stabilizing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000186326A true JP2000186326A (en) | 2000-07-04 |
Family
ID=18474663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10361721A Pending JP2000186326A (en) | 1998-12-18 | 1998-12-18 | Slope stabilizing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000186326A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007191879A (en) * | 2006-01-17 | 2007-08-02 | Okabe Co Ltd | Boring method selecting method |
| JP2007262734A (en) * | 2006-03-28 | 2007-10-11 | Nippon Steel & Sumikin Metal Products Co Ltd | Slope stabilizing method |
| KR100862387B1 (en) | 2008-04-02 | 2008-10-13 | 주식회사 신도이엔아이 | Tensional kit for top-down constructing of acupressure lasting anchor and top-down constructing method of acupressure lasting anchor using this |
| JP2008255615A (en) * | 2007-04-03 | 2008-10-23 | Ohbayashi Corp | Head anchoring structure of anchor, head anchoring method of anchor and injection method of grout material |
| JP2013185342A (en) * | 2012-03-07 | 2013-09-19 | Nippon Steel & Sumikin Metal Products Co Ltd | Bearing member for slope stabilization method |
| JP2014148824A (en) * | 2013-02-01 | 2014-08-21 | Yuji Arahama | Pressure receiving plate |
-
1998
- 1998-12-18 JP JP10361721A patent/JP2000186326A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007191879A (en) * | 2006-01-17 | 2007-08-02 | Okabe Co Ltd | Boring method selecting method |
| JP2007262734A (en) * | 2006-03-28 | 2007-10-11 | Nippon Steel & Sumikin Metal Products Co Ltd | Slope stabilizing method |
| JP2008255615A (en) * | 2007-04-03 | 2008-10-23 | Ohbayashi Corp | Head anchoring structure of anchor, head anchoring method of anchor and injection method of grout material |
| KR100862387B1 (en) | 2008-04-02 | 2008-10-13 | 주식회사 신도이엔아이 | Tensional kit for top-down constructing of acupressure lasting anchor and top-down constructing method of acupressure lasting anchor using this |
| JP2013185342A (en) * | 2012-03-07 | 2013-09-19 | Nippon Steel & Sumikin Metal Products Co Ltd | Bearing member for slope stabilization method |
| JP2014148824A (en) * | 2013-02-01 | 2014-08-21 | Yuji Arahama | Pressure receiving plate |
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