JPH01190826A - Earth work method for reinforcing slope by reinforcing member of belt form - Google Patents
Earth work method for reinforcing slope by reinforcing member of belt formInfo
- Publication number
- JPH01190826A JPH01190826A JP1547388A JP1547388A JPH01190826A JP H01190826 A JPH01190826 A JP H01190826A JP 1547388 A JP1547388 A JP 1547388A JP 1547388 A JP1547388 A JP 1547388A JP H01190826 A JPH01190826 A JP H01190826A
- Authority
- JP
- Japan
- Prior art keywords
- reinforcing
- drilling
- slope
- hole
- reinforcing material
- 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
- 238000000034 method Methods 0.000 title claims description 9
- 230000003014 reinforcing effect Effects 0.000 title description 21
- 238000005553 drilling Methods 0.000 claims description 36
- 239000012779 reinforcing material Substances 0.000 claims description 19
- 230000002787 reinforcement Effects 0.000 claims description 8
- 238000010276 construction Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、自然地山斜面または切土斜面あるいは盛土斜
面から帯状補強材を挿入設置して安定化を図る斜面補強
土工法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a slope-reinforcing earthwork method in which a band-shaped reinforcing material is inserted and installed from a natural mountain slope, a cut slope, or an embankment slope to stabilize the slope.
斜面の安定や支持力の増大を目的としたものに補強土工
法がある。この場合、盛土体の補強の場合と自然地山（
切土斜面のこともあり、以下断りない限り自然地山とい
う）の補強の場合とに大別できる。Reinforced earthwork methods are aimed at stabilizing slopes and increasing their bearing capacity. In this case, in the case of reinforcement of the embankment body and in the case of natural ground (
It can also be divided into cases of reinforcing cut slopes (hereinafter referred to as natural ground unless otherwise specified).
前者の盛土体の補強の例として代表的なのは、テールア
ルメ工法で、各段の盛土の度に、鋼棒や鋼板を水平に設
置するものである。また、盛土の補強に当り、ネット材
などを用いる補強材のみの場合と、テールアルメ工法の
ように、擁壁を設ける場合とがある。A typical example of the former method of reinforcing embankments is the Terre Armé method, in which steel bars or steel plates are installed horizontally at each level of embankment. In addition, when reinforcing the embankment, there are cases where only reinforcement materials such as net materials are used, and cases where a retaining wall is provided as in the Terre Alme construction method.
他方、自然地山に対するものとしては、鉄筋を平行的に
挿入する工法と、網状鉄筋を互に平行にならないように
挿入する工法のみである。両者は、共に地山を穿孔した
後鉄筋を挿入しその周りにモルタル類を充填して約１０
０ｍｍ前後の小口経机を形成するものである。なお、前
者は、モルタル類の充填を行わない場合もある。On the other hand, as for natural ground, there are only two methods: one in which reinforcing bars are inserted in parallel, and one in which reticulated reinforcing bars are inserted in a non-parallel manner. For both, after drilling into the ground, reinforcing bars were inserted and mortar was filled around them.
It forms a small mouth with a diameter of around 0 mm. Note that in the former case, filling with mortar may not be performed.
ところが、従来の自然地山に対する補強土工法は、鉄筋
またはこれを含む小口経机を、曲げモーメントおよび剪
断に対する抵抗体として作用させ、これにより補強を図
るものである。したがって、その目的からすれば、補強
材を多数自然地山に設置する必要があり、このためその
補強材の挿入およびグラウト注入・定着などの後処理に
全体として多大な手間を要する。However, in the conventional earthwork reinforcement method for natural ground, reinforcement is achieved by using reinforcing bars or edge bars containing reinforcing bars to act as resistors against bending moments and shearing. Therefore, for this purpose, it is necessary to install a large number of reinforcing materials in the natural ground, and therefore, a great deal of effort is required as a whole for post-processing such as inserting the reinforcing materials and injecting and fixing the grout.
また、自然地山の崩落の防止には、多くの場合、補強材
を引張抵抗体として働かすことが有効であることを本発
明者らは知見したが、前記従来の工法では、専ら補強材
を曲げおよび剪断の抵抗体として働かせており、したが
って補強効果が十分に発揮しないものであった。In addition, the present inventors have discovered that in many cases it is effective to use reinforcing materials as tensile resistors to prevent the collapse of natural lands; however, in the conventional construction methods described above, reinforcing materials are It functions as a bending and shearing resistor, and therefore does not have a sufficient reinforcing effect.
そこで、本発明の主たる目的は、自然地山に対する補強
効果が大きく、しかも施工能率が高い補強土工法を提供
することにある。Therefore, the main object of the present invention is to provide a reinforced earth construction method that has a large reinforcing effect on natural ground and has high construction efficiency.
前記問題点を解決するための本発明は、複数の削孔軸を
並列的に有する削孔機により地山の斜面から削孔し、削
孔後削孔機を取り除き、これに代って前記削孔内に厚み
が０．６〜２０龍の帯状補強材を挿入し、その帯状補強
材の基端部を斜面に定着することをを特徴とするもので
ある。The present invention for solving the above-mentioned problems involves drilling a hole from the slope of the ground using a hole-drilling machine having a plurality of hole-drilling axes in parallel, removing the hole-drilling machine after drilling, and replacing it with the The method is characterized in that a reinforcing strip having a thickness of 0.6 to 20 mm is inserted into the drilled hole, and the base end of the reinforcing strip is fixed to the slope.
本発明では、帯状補強材を地山中に挿入設置するため、
一つの材料当りの表面積が大きいので、地山が崩落しよ
うとするときの引張抵抗がきわめて大きく、地山の補強
効果が大きい。逆に、補強効果が大きいため、少い帯状
補強材の挿入設置で足り、その施工工数が全体として削
減される。In the present invention, in order to insert and install the belt-shaped reinforcing material into the ground,
Since the surface area per material is large, the tensile resistance when the ground tries to collapse is extremely large, and the reinforcing effect of the ground is large. On the other hand, since the reinforcing effect is large, it is sufficient to insert and install a small number of reinforcing strips, and the number of construction steps is reduced overall.
他方、本発明に係わる厚みが０．６〜２０１１１の厚い
帯状補強材を圧入や打撃により設置することは強度的に
到底無理であるが、削孔軸を複数並列的に有する削孔機
により削孔すると、巾広偏平な削孔を形成でき、その削
孔内に前記帯状補強材を容易に挿入できる。また、削孔
機が複数の削孔軸を有するので、偏平な削孔を形成する
際に、−軸によるものと比較して、削孔能率が高まる。On the other hand, it is absolutely impossible to install the thick band-shaped reinforcing material of the present invention with a thickness of 0.6 to 20111 mm by press-fitting or hammering, but it can be drilled by a hole-drilling machine having multiple hole-drilling shafts in parallel. When drilling, a wide and flat hole can be formed, and the band-shaped reinforcing material can be easily inserted into the hole. Moreover, since the hole drilling machine has a plurality of hole drilling shafts, when forming a flat hole, the drilling efficiency is increased compared to a case using a negative shaft.
以下本発明を図面を参照しながらさらに詳説する。 The present invention will be explained in more detail below with reference to the drawings.
本発明では、第２図に示すように、鋼板等からなる帯状
補強材を用いる。この場合の厚みｔとしては、０．６〜
２０鶴、特に好ましくは１〜１０１■のものが用いられ
、幅Ｗは５０１１以上、特には１００ｍｍ以上のものが
用いられ、上限は３００額、場合により１１００（ｂま
でとされる。長さＬとしては、種々のものが用いられる
が、施工を斜面上で行うことによる施工性や設置機の制
約から、最長は１０ｍ程度とされる。In the present invention, as shown in FIG. 2, a strip-shaped reinforcing material made of a steel plate or the like is used. In this case, the thickness t is 0.6~
20 cranes, particularly preferably 1 to 101 cm, are used, and the width W is 5011 mm or more, especially 100 mm or more.The upper limit is 300 mm, and in some cases up to 1100 mm.Length L Although a variety of materials can be used, the maximum length is approximately 10 m due to ease of construction and restrictions on installation equipment due to the construction being carried out on a slope.
さて、かかる帯状補強材１は、後述する挿入設置例に従
って、第１図のように切取自然地山２斜面から予想すべ
り線ｌより深くまで挿入設置する。Now, according to an example of insertion and installation described later, the strip-shaped reinforcing material 1 is inserted and installed from the slope of the cut natural ground 2 to a depth deeper than the predicted slip line l as shown in FIG.
擬似擁壁的な施工を行う場合、βに達しなくともよい。When constructing a pseudo-retaining wall, it is not necessary to reach β.
この挿入設置が終了したならば、斜面上にモルタル類の
吹付工等により保護壁３を構成するとともに、帯状補強
材１の基端を斜面に対して定着する。After this insertion and installation is completed, the protective wall 3 is formed on the slope by spraying mortar or the like, and the base end of the band-shaped reinforcing material 1 is fixed to the slope.
この定着手段としては、種々のものを採用できるが、た
とえば第４図のように、補強材ｌの基端を折曲したり、
第５図のように折り返したりして、保護壁３と一体化を
図る方法や、第６図のように、保護壁３上に定着板４を
設け、クサビ５を打ち込むことにより定着することがで
きる。Various types of fixing means can be employed, such as bending the base end of the reinforcing material l, as shown in FIG.
As shown in FIG. 5, it can be folded back to integrate with the protection wall 3, or as shown in FIG. can.
一方、補強材１は、斜め挿入でもよいが、通常は水平に
挿入するのが好ましい。配置例は、第３図のように千鳥
配置のほか、高さ方向に層状の配列であってもよい。ま
た、必要ならば、従来例の断面円形鉄筋６挿入工法を併
用してもよい。補強材の配列ピンチ水平間隔Ｐは０．５
ｍ〜２ｍが好ましく、また高さ間隔りは０．５〜３ｍが
好ましい。On the other hand, the reinforcing material 1 may be inserted diagonally, but it is usually preferable to insert it horizontally. Examples of the arrangement include a staggered arrangement as shown in FIG. 3, as well as a layered arrangement in the height direction. Furthermore, if necessary, the conventional method of inserting reinforcing bars 6 with a circular cross section may be used in combination. Reinforcement material arrangement pinch horizontal spacing P is 0.5
m to 2 m is preferable, and the height interval is preferably 0.5 to 3 m.
一方、補強材の挿入設置に当っては、複数の削孔軸を並
列的に有する削孔機を用いて削孔し、削孔後、これを引
き抜いて、前記帯状補強材を削孔内に挿入する。On the other hand, when inserting and installing the reinforcing material, a hole is drilled using a hole-drilling machine having multiple hole-drilling shafts in parallel. insert.
本発明に係る削孔機の例としては、回転衝撃式削孔機や
スクリューオーガ式削孔機等を挙げることができる。Examples of the hole drilling machine according to the present invention include a rotary impact type hole drilling machine and a screw auger type hole drilling machine.
前者の例としては、第７図から第１０図のものがある。Examples of the former are shown in FIGS. 7 to 10.
すなわち、架台１０に移動台１１および案内部材１２を
設け、移動台１１を架台１０に固定したシリンダ１３の
ロンドに連結し、移動台１１を架台１０の係合部１０ａ
に係合させながら前後進自在としておく。That is, the movable base 11 and the guide member 12 are provided on the pedestal 10, the movable base 11 is connected to the cylinder 13 fixed to the pedestal 10, and the movable base 11 is connected to the engagement portion 10a of the pedestal 10.
It is possible to freely move forward and backward while engaging with.
移動台１１上には、保持体１４を設け、この保持体１４
と一体となったロッドチャック１５．１５゜１５により
各削孔軸１６Ａ〜１６Ｃの先端部には、それぞれダンザ
ホールハンマー１７．１７．１７を取付けるとともに、
各削孔軸１６Ａ〜１６Ｃを連結金具１８にて連結し、ま
た削孔軸１６Ａ〜１６Ｃの先端にハンマービット１９Ａ
〜１９Ｃを取付けておく。各ハンマービット１９Ａ〜１
９Ｃは、第９図のように、削孔域が重なるよう、第７図
のように、たとえば中央のハンマービット１９Ｂを後退
させておく。各削孔軸１６Ａ〜１６Ｃの基端にはスイベ
ル２０を取付け、ここから削孔水Ｗを送って、ビット１
９Ａ〜１９Ｃの先端面から噴出させるようにする。２１
は各削孔軸１６Ａ〜１６Ｃを同方向に回転させるだめの
油圧モータで、その出力は保持体１４内の動力伝達機構
を介してチャック１５に伝達される。A holding body 14 is provided on the moving table 11, and this holding body 14
A Danza hole hammer 17.17.17 is attached to the tip of each drilling shaft 16A to 16C by a rod chuck 15.15°15 integrated with the rod chuck 15.15.
Each drilling shaft 16A to 16C is connected with a connecting fitting 18, and a hammer bit 19A is attached to the tip of each drilling shaft 16A to 16C.
~Install 19C. Each hammer bit 19A~1
9C, for example, the central hammer bit 19B is moved back as shown in FIG. 7 so that the drilling areas overlap as shown in FIG. A swivel 20 is attached to the base end of each drilling shaft 16A to 16C, from which drilling water W is sent, and the bit 1
It is made to eject from the tip surfaces of 9A to 19C. 21
is a hydraulic motor that rotates each of the drilling shafts 16A to 16C in the same direction, and its output is transmitted to the chuck 15 via a power transmission mechanism within the holder 14.
削孔に当っては、シリンダ１３のロンドを収縮させなが
ら移動台１１を第８図左方に移動させつつ、各削孔軸１
６Ａ〜１６Ｃを回転させ、その際ハンマー１７により衝
撃力を与えて削孔する。During drilling, each drilling shaft 1 is moved while moving the movable table 11 to the left in FIG.
6A to 16C are rotated, and at this time, an impact force is applied by the hammer 17 to drill holes.
削孔終了後、各削孔軸１６Ａ〜１６Ｃを引き抜き、それ
に代って帯状補強材を挿入し、その基端部を前述のよう
に、地斜面に定着する。After drilling is completed, each of the drilling shafts 16A to 16C is pulled out, a reinforcing strip is inserted in its place, and the base end thereof is fixed to the ground slope as described above.
第１１図のように、オーガ式削孔機であってもよい。３
０Ａ〜３０Ｃはオーガ軸である。As shown in FIG. 11, an auger type drilling machine may be used. 3
0A to 30C are auger shafts.
なお、本発明における帯状補強材としては、鋼板のほか
、他の金属板、付着力を高めるために縞金属板など表面
に凹凸を形成したもの、合成樹脂板、網体、パンチング
メタル、あるいはそれらの複合板、耐腐食性向上のため
にメツキ等の表面処理したもの等を用いることができる
。In addition to steel plates, the belt-shaped reinforcing material in the present invention may include other metal plates, striped metal plates with irregularities formed on the surface to increase adhesion, synthetic resin plates, nets, punched metal, or other metal plates. Composite plates with surface treatments such as plating to improve corrosion resistance can be used.
以上通り、本発明によれば、自然地山に対する補強効果
が高く、しかも施工能率に優れるなどの利点がもたらさ
れる。As described above, according to the present invention, advantages such as a high reinforcing effect on natural ground and excellent construction efficiency are brought about.
第１図は本発明工法の実施状態の全体図、第２図は帯状
補強材の斜視図、第３図はその配置側図、第４図〜第６
図は補強材頭部の定着側図、第７図〜第１０図は回転衝
撃式削孔機の例で、第７図は平面図、第８図は正面図、
第９図は側面図、第１０図は斜視図、第１１図はオーガ
式削孔機のオーガ軸の斜視図である。
■・・・帯状補強材、２・・・地山、３・・・保護壁、
６・・・鉄筋、１６Ａ〜１６Ｃ・・・削孔軸、１９Ａ〜
１９Ｃ・・・ビット、３０Ａ〜３０Ｃ・・・オーガ軸。
第１図
第４図
第５図Figure 1 is an overall view of the implementation state of the construction method of the present invention, Figure 2 is a perspective view of the band-shaped reinforcement, Figure 3 is a side view of its arrangement, and Figures 4 to 6.
The figure is a fixation side view of the reinforcing material head, Figures 7 to 10 are examples of a rotary impact type drilling machine, Figure 7 is a plan view, Figure 8 is a front view,
FIG. 9 is a side view, FIG. 10 is a perspective view, and FIG. 11 is a perspective view of the auger shaft of the auger type drilling machine. ■... Band reinforcement material, 2... Earth, 3... Protection wall,
6...Reinforcing bar, 16A~16C...Drilling shaft, 19A~
19C...bit, 30A~30C...auger shaft. Figure 1 Figure 4 Figure 5
Claims (1)
の斜面から削孔し、削孔後削孔機を取り除き、これに代
って前記削孔内に厚みが０．６〜２０ｍｍの帯状補強材
を挿入し、その帯状補強材の基端部を斜面に定着するこ
とをを特徴とする帯状補強材による斜面補強土工法。(1) A hole is drilled from the slope of the ground using a hole-drilling machine having multiple hole-drilling axes in parallel, and after drilling, the hole-drilling machine is removed, and instead, a hole with a thickness of 0.6 A slope reinforcement earthwork method using a belt-shaped reinforcing material, characterized by inserting a belt-shaped reinforcing material of ~20 mm and fixing the base end of the belt-shaped reinforcing material to the slope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1547388A JPH01190826A (en) | 1988-01-26 | 1988-01-26 | Earth work method for reinforcing slope by reinforcing member of belt form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1547388A JPH01190826A (en) | 1988-01-26 | 1988-01-26 | Earth work method for reinforcing slope by reinforcing member of belt form |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01190826A true JPH01190826A (en) | 1989-07-31 |
| JPH0460166B2 JPH0460166B2 (en) | 1992-09-25 |
Family
ID=11889771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1547388A Granted JPH01190826A (en) | 1988-01-26 | 1988-01-26 | Earth work method for reinforcing slope by reinforcing member of belt form |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01190826A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105839648A (en) * | 2016-04-15 | 2016-08-10 | 麦永光 | Structure project for preventing landslide and debris flow hazards |
-
1988
- 1988-01-26 JP JP1547388A patent/JPH01190826A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105839648A (en) * | 2016-04-15 | 2016-08-10 | 麦永光 | Structure project for preventing landslide and debris flow hazards |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0460166B2 (en) | 1992-09-25 |
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