JPH04185819A - Reinforcing work of slope - Google Patents
Reinforcing work of slopeInfo
- Publication number
- JPH04185819A JPH04185819A JP31416990A JP31416990A JPH04185819A JP H04185819 A JPH04185819 A JP H04185819A JP 31416990 A JP31416990 A JP 31416990A JP 31416990 A JP31416990 A JP 31416990A JP H04185819 A JPH04185819 A JP H04185819A
- Authority
- JP
- Japan
- Prior art keywords
- ground
- spiral
- rod
- reinforcing
- reinforcing rod
- 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
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000004873 anchoring Methods 0.000 claims abstract description 8
- 230000002787 reinforcement Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 abstract description 18
- 230000035515 penetration Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 9
- 238000005553 drilling Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000011178 precast concrete Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000007788 liquid 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
- 239000002689 soil Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Piles And Underground Anchors (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、地盤内に多数の補強ロッドを打込むことに
よって法面の崩壊を防止する法面の補強工法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a slope reinforcement method for preventing slope collapse by driving a large number of reinforcing rods into the ground.
（従来の技術）
自然斜面や切り土あるいは盛土を施工した法面の安定化
を図るための工法の一つに補強ロッドの打込み工法があ
る。(Prior Art) One of the construction methods for stabilizing natural slopes and slopes constructed with cut earth or embankment is the driving method of reinforcing rods.
この工法は、例えばアースネイリング工法などと称され
、板に釘を打込むのと類偏する原理の工法であり、特に
法面に適用した場合には、地盤中に向けて補強ロッドを
打込むことで地盤の滑りによる法面の崩壊を防止できる
。This construction method is called, for example, the earth nailing construction method, and is based on a principle similar to that of driving nails into a board. Especially when applied to slopes, reinforcing rods are driven into the ground. This will prevent the slope from collapsing due to ground slippage.
（発明か解決しようとする５題）
しかしながら、この工法においては、単に補強ロッドを
打込んだだけては容品に抜は出てしまうため、前記補強
ロッドの先端を地盤内に強固に定着する必要があり、グ
ラウト、セメントミルクなどと称される定着材を地盤内
に注入し、この注入された定着材の中心に補強ロッドを
貫入する必要があった。(5 problems to be solved by the invention) However, in this construction method, simply driving the reinforcing rod would result in damage to the product, so the tip of the reinforcing rod must be firmly fixed in the ground. It was necessary to inject a fixing material called grout, cement milk, etc. into the ground, and to insert a reinforcing rod into the center of the injected fixing material.
したがって、この工法の手順としては、地盤を削孔し、
次いで削孔した内部に液状の定６材を注入し、この定着
材の固結前に補強ロッドを挿入し、定着材の固結により
補強ロッドを地盤内に定着させなければならないため、
工種が多く施工能率や経済性などに問題があった。Therefore, the steps for this method are to drill holes in the ground,
Next, a liquid fixing material is injected into the drilled hole, a reinforcing rod is inserted before the fixing material is solidified, and the reinforcing rod must be fixed in the ground by solidifying the fixing material.
There were many types of work, and there were problems with construction efficiency and economic efficiency.
また工種によってはジェットボルト工法と称して、削孔
と同時に削孔ドリルの先端から定着材を噴出させて施工
能率を上げる工法もあるが、いずれにあっても定着材を
用いるので、湿式作業を伴うため、作業手順が繁雑化す
ることに変りがなかった。In addition, depending on the type of work, there is a method called the jet bolt method, which increases construction efficiency by ejecting a fixing material from the tip of a drilling drill at the same time as drilling, but in both cases, a fixing material is used, so wet work is not required. As a result, work procedures continued to become more complicated.
この発明は以上の問題点に鑑みなされたものであって、
補強ロッドを地盤内に挿入するだけで地盤内部での定着
を行える法面補強工法を提供するものである。This invention was made in view of the above problems,
To provide a slope reinforcement method that can be anchored inside the ground simply by inserting a reinforcing rod into the ground.
（課題を解決するための手段）
前記目的を達成するため、この発明は、法面から地盤内
に向けて多数の補強ロッドを打込んで地盤を補強する法
面補強工法において、前記補強ロッドの少なくとも先端
部をコイル状に捻回して螺旋部を形成し、該螺旋部の螺
旋方向に回転させつつ前記補強ロッドを地盤中に貫入し
、前記螺旋部を定着端として地盤中に固定するものであ
る。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a slope reinforcement method in which a large number of reinforcing rods are driven into the ground from the slope to reinforce the ground. At least the tip part is twisted into a coil shape to form a spiral part, and the reinforcing rod is penetrated into the ground while being rotated in the spiral direction of the spiral part, and is fixed in the ground with the spiral part as an anchoring end. be.
（作 用）
以上の構成において、螺旋部が地盤中に捩じ込まれつつ
貫入され、貫入状態では、螺旋部に対する地盤の投錨効
果によって、引き抜き力に対する大きな抵抗をもたらす
。(Function) In the above configuration, the spiral portion penetrates while being screwed into the ground, and in the penetrating state, the anchoring effect of the ground on the spiral portion provides a large resistance to the pulling force.
（実 施 例）
以下、この発明工法の実施例を図面を用いて詳細に説明
する。(Example) Hereinafter, an example of this invention construction method will be described in detail using drawings.
第１図はこの発明の第一実施例を示すものである。FIG. 1 shows a first embodiment of the invention.
図において、地盤Ｅの傾斜面には所定の傾斜の法面Ａが
形成され、またその表面はプレキャストコンクリート版
などからなる表面仕上げ材１で覆われている。In the figure, a slope A with a predetermined slope is formed on the slope of the ground E, and its surface is covered with a surface finishing material 1 made of a precast concrete slab or the like.
この法面Ａには、これとほぼ直交するようにして、地盤
Ｅの内部に到達する多数の補強ロッド２が貫入されてい
る。A large number of reinforcing rods 2 are penetrated into this slope A so as to be substantially orthogonal thereto, and reach the inside of the ground E.
この補強ロッド２は、第２図に示すように、所定の太さ
の鋼線の先端部から所定の長さしだけコイル状に捻回し
、前記補強ロッド２の直線部の径ｄよりかなり大きな径
りの螺旋部３を形成したものである。As shown in FIG. 2, this reinforcing rod 2 is made by twisting a steel wire of a predetermined thickness into a coil for a predetermined length from the tip thereof, and the diameter d of the straight portion of the reinforcing rod 2 is considerably larger than that of the reinforcing rod 2. A spiral portion 3 having a diameter is formed.
なお、螺旋部３のピッチおよび捻回数は、前記地盤Ｅに
対する貫入深さや土質による貫入し易さなどを考慮して
適度な貫入力および大きな引き抜き抵抗となる値に設定
される。The pitch and number of twists of the helical portion 3 are set to values that provide an appropriate penetration force and large pull-out resistance, taking into account the penetration depth into the ground E and the ease of penetration due to the soil quality.
この工法における作業手順は、まず前記表面仕上げ材１
を前記補強ロッド２の径よりやや大きめの径となるよう
に削孔し、次いで補強ロッド２をその螺旋方向に沿って
回転させつつ貫入し、地盤Ｅの内部に到達させる。The work procedure in this construction method is to begin with the surface finishing material 1.
A hole is drilled to have a diameter slightly larger than that of the reinforcing rod 2, and then the reinforcing rod 2 penetrates the ground E while rotating along its spiral direction, and reaches the inside of the ground E.
この貫入方法としては、前記補強ロッド２の頭部に接続
金具等を介して回転機械を接続し、機械的な回転力を加
えることによって貫入させることができるが、手作業で
やる場合には第２図に示すように、丁字形の回転治具４
を補強ロッド２の頭部に装着し、この回転治具４を螺旋
方向に回転操作するようにもできる。This penetration method can be achieved by connecting a rotating machine to the head of the reinforcing rod 2 via a connecting fitting or the like and applying mechanical rotational force, but when doing it manually, the As shown in Figure 2, a T-shaped rotating jig 4
It is also possible to attach the rotation jig 4 to the head of the reinforcing rod 2 and rotate the rotation jig 4 in a spiral direction.
いずれの方法にあっても、前記補強ロッド２の螺旋部３
は、その太さおよびピッチに応じた螺旋状の孔を穿ち、
貫入部分の地盤崩壊を生ずることなく地盤Ｅ内に貫入さ
れる。In either method, the spiral portion 3 of the reinforcing rod 2
Drills a spiral hole according to its thickness and pitch,
It penetrates into the ground E without causing any ground collapse at the penetrated portion.
貫入完了状態では螺旋部３はその径りの大きさおよびそ
の長さＬ分地盤Ｅの内部に喰込み、その投錨効果によっ
て引き抜き力に対する大きな抵抗をもたらす。それゆえ
、引き抜き側の回転力が加わらないかぎり、その先端の
螺旋部３が定着部となって地盤Ｅの内部に定着する。When the penetration is completed, the spiral portion 3 bites into the ground E by its diameter and length L, and its anchoring effect provides a large resistance to the pulling force. Therefore, unless a rotational force on the pulling side is applied, the spiral portion 3 at the tip becomes a fixing portion and is fixed inside the ground E.
また、前記補強ロッド２の表面仕上げ材１がらの突出端
にワッシャ５を介してナツト６を捩じ込めば、頭部側も
表面仕上げ材ｌの表面に定着される。Furthermore, by screwing the nut 6 through the washer 5 onto the protruding end of the surface finishing material 1 of the reinforcing rod 2, the head side is also fixed to the surface of the surface finishing material 1.
なお、表面仕上げ材１はプレキャストコンクリート版に
限られるものでなく、法面Ａを露出させた状態で各補強
ロッド２の貫入作業を行い、作業完了後法面Ａの表面に
コンクリート吹き付けによって形成することもできる。In addition, the surface finishing material 1 is not limited to a precast concrete slab, and the penetration work of each reinforcing rod 2 is performed with the slope A exposed, and after the work is completed, it is formed by spraying concrete on the surface of the slope A. You can also do that.
第３図はこの発明の第二実施例を示すものである。FIG. 3 shows a second embodiment of the invention.
図において、補強ロッド１０の螺旋部１１は前記表面仕
上げ材１の表面に突出する頭部を除いて補強ロッド１０
の全長に亘って形成されている。In the figure, the helical portion 11 of the reinforcing rod 10 is the same as that of the reinforcing rod 10 except for the head portion protruding from the surface of the surface finishing material 1.
It is formed over the entire length of.
したがって、この実施例では、螺旋部１１の径Ｄに加え
てその全長し−に沿った定着効果が得られる。Therefore, in this embodiment, a fixing effect can be obtained not only along the diameter D of the spiral portion 11 but also along its entire length.
なお、この補強ロッド１０と前記第一実施例の補強ロッ
ド２との組合わせでも良いことは勿論である。It goes without saying that this reinforcing rod 10 and the reinforcing rod 2 of the first embodiment may be combined.
（発明の効果）
以上実施例によって詳細に説明したように、この発明に
よる法面補強工法にあっては、螺旋部が地盤中に捩じ込
まれつつ貫入し、貫入状態で螺旋部の内周の地盤は崩さ
れておらず、その喰付きによる投錨効果によって引き抜
き力に対する大きな抵抗をもたらす。(Effects of the Invention) As described above in detail through the embodiments, in the slope reinforcement method according to the present invention, the spiral portion penetrates while being screwed into the ground, and in the penetrating state, the inner circumference of the spiral portion The ground has not collapsed, and the anchoring effect caused by its bite provides great resistance to pulling forces.
また、螺旋部が定着部となって地盤内に補強ロッドを定
着させる構成なので、従来に比べて定着材の注入作業お
よび削孔ドリルなどの装置が不要となり、施工能率、経
済性の面で極めて有利である。In addition, since the spiral part serves as the anchoring part to anchor the reinforcing rod in the ground, it eliminates the need for injection of anchoring material and equipment such as hole drilling compared to conventional methods, resulting in extremely high construction efficiency and economic efficiency. It's advantageous.
第１図はこの発明の第一実施例を示す断面説明図、第２
図は補強ロッドの斜視図、第３図はこの発明の第二実施
例を示す断面説明図である。
２．１０・・・補強ロッド
３．１１・・・螺旋部
Ｅ・・・地盤
Ａ・・・法面FIG. 1 is a cross-sectional explanatory diagram showing the first embodiment of this invention, and the second
The figure is a perspective view of the reinforcing rod, and FIG. 3 is a cross-sectional explanatory view showing a second embodiment of the invention. 2.10...Reinforcement rod 3.11...Spiral part E...Ground A...Slope surface
Claims (1)
んで地盤を補強する法面補強工法において、前記補強ロ
ッドの少なくとも先端部をコイル状に捻回して螺旋部を
形成し、該螺旋部の螺旋方向に回転させつつ前記補強ロ
ッドを地盤中に貫入し、前記螺旋部を定着端として前記
地盤中に固定することを特徴とする法面補強工法。(1) In a slope reinforcement method in which a large number of reinforcing rods are driven into the ground from the slope to reinforce the ground, at least the tips of the reinforcing rods are twisted into a coil shape to form a spiral part, and A slope reinforcement method characterized in that the reinforcing rod is penetrated into the ground while being rotated in the helical direction of the helical part, and is fixed in the ground with the helical part as an anchoring end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31416990A JPH04185819A (en) | 1990-11-21 | 1990-11-21 | Reinforcing work of slope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31416990A JPH04185819A (en) | 1990-11-21 | 1990-11-21 | Reinforcing work of slope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04185819A true JPH04185819A (en) | 1992-07-02 |
Family
ID=18050080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31416990A Pending JPH04185819A (en) | 1990-11-21 | 1990-11-21 | Reinforcing work of slope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04185819A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07127057A (en) * | 1993-11-02 | 1995-05-16 | Kajima Corp | Compression system permanent anchor |
| JP2002038499A (en) * | 2000-07-28 | 2002-02-06 | Tsuneo Goto | Fixing method of retaining wall |
| JP2011174306A (en) * | 2010-02-25 | 2011-09-08 | Okasan Livic Co Ltd | Placement reinforcement material having function of drilling into soil and function of pull-out resistant force |
| JP2013039054A (en) * | 2011-08-12 | 2013-02-28 | East Japan Railway Co | Screw pile, method for driving the same, and construction method of weed-proof sheet |
| GB2530866A (en) * | 2014-08-06 | 2016-04-06 | Gripple Ltd | Securing device |
-
1990
- 1990-11-21 JP JP31416990A patent/JPH04185819A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07127057A (en) * | 1993-11-02 | 1995-05-16 | Kajima Corp | Compression system permanent anchor |
| JP2002038499A (en) * | 2000-07-28 | 2002-02-06 | Tsuneo Goto | Fixing method of retaining wall |
| JP2011174306A (en) * | 2010-02-25 | 2011-09-08 | Okasan Livic Co Ltd | Placement reinforcement material having function of drilling into soil and function of pull-out resistant force |
| JP2013039054A (en) * | 2011-08-12 | 2013-02-28 | East Japan Railway Co | Screw pile, method for driving the same, and construction method of weed-proof sheet |
| GB2530866A (en) * | 2014-08-06 | 2016-04-06 | Gripple Ltd | Securing device |
| GB2541144A (en) * | 2014-08-06 | 2017-02-08 | Gripple Ltd | Securing device |
| GB2530866B (en) * | 2014-08-06 | 2017-05-03 | Gripple Ltd | Securing device |
| JP2017524085A (en) * | 2014-08-06 | 2017-08-24 | グリップル・リミテッドＧｒｉｐｐｌｅ Ｌｉｍｉｔｅｄ | Ground anchor |
| GB2541144B (en) * | 2014-08-06 | 2018-04-04 | Gripple Ltd | A Drive Transmission Device for a Securing Device |
| US10167605B2 (en) | 2014-08-06 | 2019-01-01 | Gripple Limited | Securing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2981213B1 (en) | Foundation piles and building structure | |
| JPH04185819A (en) | Reinforcing work of slope | |
| US20070286686A1 (en) | Method For Installing A Solidifying Material Pier Anchorage System | |
| JP2002038477A (en) | Stabilizing method for slope face | |
| JP2004011343A (en) | Buried steel-pipe pile | |
| CN113668523A (en) | Claw anchor type anchor rod suitable for geotechnical engineering and construction method thereof | |
| JPH04194227A (en) | Earth reinforcing method with tubular reinforcement | |
| JPH0558084B2 (en) | ||
| JP2582724B2 (en) | Drilling equipment for foundation ground | |
| JPH0336314A (en) | Driving construction for underground pile | |
| JPH0657943B2 (en) | Construction method of screw-in pile | |
| JPH0533558Y2 (en) | ||
| JPH0626042A (en) | Process of rotationally driving h-shape steel bar and h-shape steel bar used therefor | |
| JPH06316927A (en) | Installation of open section pile in large diameter | |
| JPS61250228A (en) | Construction of head-reinforced pile | |
| JP2519849Y2 (en) | Self-piercing lock bolt | |
| JPS64538B2 (en) | ||
| JPS59179927A (en) | Earth anchor bar | |
| JPS6131280B2 (en) | ||
| JPH0325120A (en) | Rock anchor method in widened borehole wall type | |
| JPH03228914A (en) | Driving method for steel-pipe pile | |
| JP2539888B2 (en) | Anchor head support and construction method thereof | |
| JP2003227132A (en) | Pile member joint element and method for constructing composite pile | |
| JPH0714433Y2 (en) | Connection structure between concrete pile head and footing | |
| JPH02266021A (en) | Earth anchor and its executing method |