JPH0533558Y2 - - Google Patents
Info
- Publication number
- JPH0533558Y2 JPH0533558Y2 JP1299288U JP1299288U JPH0533558Y2 JP H0533558 Y2 JPH0533558 Y2 JP H0533558Y2 JP 1299288 U JP1299288 U JP 1299288U JP 1299288 U JP1299288 U JP 1299288U JP H0533558 Y2 JPH0533558 Y2 JP H0533558Y2
- Authority
- JP
- Japan
- Prior art keywords
- dimension
- opening
- axis
- anchor
- closing plate
- 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.)
- Expired - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 239000008267 milk Substances 0.000 description 4
- 210000004080 milk Anatomy 0.000 description 4
- 235000013336 milk Nutrition 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は法面を保護するために用いるアースア
ンカに関する。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an earth anchor used to protect slopes.
法面、擁壁、井桁などを安定に保つためにアー
スアンカが用いられる。このようなアースアンカ
は、地山に掘削孔を穿削し、この孔の中に引張材
をセメントミルクなどによつて固定するものであ
る。
Earth anchors are used to keep slopes, retaining walls, parallel girders, etc. stable. Such earth anchors are made by drilling a hole in the ground and fixing the tensile material into the hole using cement milk or the like.
このようなアースアンカは従来各種のものが創
案されており、擁壁等の工事施工完了後引抜き除
去するものと、引抜き除去しない永久埋設方式の
ものとがある。後者では掘削孔底に拡がる部材を
持つ拡底アースアンカが用いられている。これは
掘削孔を比較的短くできるという理由による。 Various types of such earth anchors have been developed in the past, including those that are pulled out and removed after construction of a retaining wall or the like is completed, and those that are permanently buried without being pulled out and removed. The latter uses an expanded-bottom earth anchor with a member that extends to the bottom of the borehole. This is because the borehole can be relatively short.
従来の拡底式のアースアンカは、アンカを掘削
孔内に挿入した後、アンカの先端部に取付けた翼
状の部材を引張具で外部から引張つて傘状に開か
せたり、捩つて拡大させるものである。 With conventional expansion-type earth anchors, after the anchor is inserted into an excavation hole, a wing-shaped member attached to the tip of the anchor is pulled from the outside with a tensioning tool to open it into an umbrella shape, or it is twisted to expand it. be.
このような従来のアースアンカは構造が複雑で
加工部品数が多く、製作が容易でないばかりでな
く、作動が必ずしも確実でなく、所要本数も多く
要するという問題があり、また、引張具、鞘管な
どが全て使い捨てになるという欠点がある。
Such conventional earth anchors have a complex structure and a large number of machined parts, making them not only difficult to manufacture, but also not necessarily reliable in operation and requiring a large number of pieces. The disadvantage is that everything is disposable.
本考案はこのような問題を解決し、構造が簡単
で作動が強力確実な上、アンカ鋼棒以外の反力パ
イプ等は撤去して繰返し使用することができるア
ースアンカを提供することを目的とするものであ
る。 The purpose of this invention is to solve these problems and provide an earth anchor that has a simple structure, strong and reliable operation, and can be used repeatedly by removing reaction pipes other than the anchor steel rod. It is something to do.
本考案を図面によつて説明する。 The present invention will be explained with reference to the drawings.
第１図は本考案のアースアンカの先端定着部を
示すもので、次の(イ)、(ロ)の組合わせから成つてい
る。 FIG. 1 shows the tip fixing part of the earth anchor of the present invention, which consists of the following combinations of (a) and (b).
(イ) 板厚ｔの中心対称十字形断面をなし十字の縦
横寸法がａからｂ（ａ＜ｂ）まで先方に拡がる
テーパおよびその先方に突出部を有する断面十
字形の角錐体状金物から成り、アンカ鋼棒の先
端に、角錐体の軸とアンカ鋼棒の軸とを同心
に、角錐体の寸法ａ側を固着した楔。(b) Consists of a pyramid-shaped metal piece with a cross-section having a centrally symmetrical cross-shaped cross section with a plate thickness of t, a taper whose vertical and horizontal dimensions widen from a to b (a<b), and a protrusion beyond the taper. , a wedge in which the dimension a side of the pyramid is fixed to the tip of the anchor steel rod, with the axis of the pyramid concentrically with the axis of the anchor steel rod.
(ロ) 円周上の定点から両側に中心角約60度の割円
を欠損した直径ｄの円形輪郭を有し、該定点を
含む直径をＹ軸、これに直交する直径をＸ軸と
したとき、
点（Ｔ／２，Ａ／２）、（−Ｔ／２，Ａ／２）、
（Ｔ／２，Ｔ／２）、（−Ｔ／２，Ｔ／２）、
（Ａ／２，Ｔ／２）、（−Ａ／２，Ｔ／２）、
（Ｂ／２，−Ｃ／２）、（−Ｂ／２，−Ｃ／２）、
（Ｂ／２，−Ｃ／２−Ｔ）、（−Ｂ／２，−Ｃ／２
−Ｔ）、（Ｔ／２，−Ｃ／２−Ｔ）、（−Ｔ／２，−
Ｃ／２−Ｔ）、（Ｔ／２，−Ｂ／２）、（−Ｔ／２，
−Ｂ／２）
を結ぶ孔を穿設した板を90度宛Ｘ軸を回転して
積重し、前記楔に外嵌した４枚の平板。(b) It has a circular contour with a diameter d with a secant circle with a central angle of approximately 60 degrees missing on both sides from a fixed point on the circumference, with the diameter including the fixed point being the Y axis, and the diameter perpendicular to this being the X axis. When, points (T/2, A/2), (-T/2, A/2),
(T/2, T/2), (-T/2, T/2),
(A/2, T/2), (-A/2, T/2),
(B/2, -C/2), (-B/2, -C/2),
(B/2, -C/2-T), (-B/2, -C/2
-T), (T/2, -C/2-T), (-T/2, -
C/2-T), (T/2,-B/2), (-T/2,
-B/2) Four flat plates are stacked by rotating the X-axis by 90 degrees, and the plates with holes connecting them are fitted onto the wedges.
ただし、ｄ＞（2b−ａ）
Ａ：ａが遊嵌する寸法
Ｂ：ｂが遊嵌する寸法
Ｔ：ｔが遊嵌する寸法
Ｃ：（ｂ−ａ−ｔ）／２
〔作用〕
第２図は本考案のアースアンカの施工時の状態
を示す掘削孔の縦断面図である。第２図ａに示す
ように、掘削機によつて掘削された掘削孔１０
に、上記楔１および４枚の平板２を先端に取付け
たアンカ鋼棒３を反力パイプ４と共に挿入する。
次に反力パイプ４に反力を受けさせてジヤツキ５
によりアンカ鋼棒３を引張ると、第２図ｂのよう
に開閉板２はアンカ鋼棒３の軸に直交する方向に
突出し、掘削孔１０の壁に食い込む。 However, d>(2b-a) A: a dimension where a fits loosely B: b dimension where b fits loosely T: t dimension where t fits loosely C: (b-a-t)/2 [Function] Fig. 2 is a vertical cross-sectional view of a drilled hole showing the state when the earth anchor of the present invention is installed. As shown in Fig. 2a, a drilled hole 10 excavated by a drilling machine is
The wedge 1 and an anchor steel rod 3 with four flat plates 2 attached to its tip are inserted into the groove together with a reaction pipe 4.
Next, the reaction force is applied to the reaction pipe 4, and the jack 5
When the anchor steel rod 3 is pulled by the tensioner, the opening and closing plate 2 protrudes in a direction perpendicular to the axis of the anchor steel rod 3 as shown in FIG. 2b and bites into the wall of the drilled hole 10.
これをさらに第３図により詳しく説明する。 This will be further explained in detail with reference to FIG.
第３図ａは第２図ａのＦ−Ｆ矢視、第３図ｂは
第２図ｂのＧ−Ｇ矢視を示したものである。アン
カ鋼棒３を引張る前は、４枚の開閉板２は第３図
ａのように同心に重なつている。アンカ鋼棒３を
ジヤツキ５で引張ると、楔１は開閉板２を第３図
ｂのように四方に押出す。 FIG. 3a shows the view taken along the line FF in FIG. 2a, and FIG. 3b shows the view taken along the line GG in FIG. 2b. Before the anchor steel rod 3 is pulled, the four opening/closing plates 2 are concentrically stacked on top of each other as shown in FIG. 3a. When the anchor steel rod 3 is pulled by the jack 5, the wedge 1 pushes out the opening/closing plate 2 in all directions as shown in FIG. 3b.
すなわち本考案は、板状の鋼材等からなる開閉
板を、地山中に掘削した孔の中で掘削方向に対し
て直交する方向に拡大し、地山に食い込ませて固
着する。開閉板４の横方向への拡大は、開閉板に
組合わせた楔１をジヤツキ５で引上げることによ
り、開閉版に設けた孔の斜面が楔面に押され、開
閉板を直交方向にスライドさせることで行う。 That is, in the present invention, an opening/closing plate made of a plate-shaped steel material or the like is expanded in a direction perpendicular to the excavation direction in a hole excavated in the ground, and is fixed by digging into the ground. To expand the opening/closing plate 4 in the lateral direction, by pulling up the wedge 1 combined with the opening/closing plate with the jack 5, the slope of the hole provided in the opening/closing plate is pushed by the wedge surface, and the opening/closing plate slides in the orthogonal direction. It is done by letting.
次いでジヤツキ５を取り外しセメントミルク等
を反力パイプ中に注入し、注入しながら反力パイ
プ４を抜き取る。セメントミルクは当初反力パイ
プ４から小穴８を通つて掘削孔１０内面に到達
し、反力パイプ４を引き抜いた後には孔１０内に
充満し、信頼性の高いアースアンカを形成する。 Next, the jack 5 is removed and cement milk or the like is poured into the reaction pipe, and the reaction pipe 4 is pulled out while being poured. Cement milk initially reaches the inner surface of the excavated hole 10 from the reaction pipe 4 through the small hole 8, and after the reaction pipe 4 is pulled out, the cement milk fills the hole 10 and forms a highly reliable earth anchor.
第１図は本考案の要部を示し、第２図は本考案
のアースアンカの施工説明図である。
FIG. 1 shows the main parts of the present invention, and FIG. 2 is an explanatory drawing of the construction of the earth anchor of the present invention.
孔径が65mm、深さ1mの掘削孔１０を掘削し、
本考案のアンカを取付けた。各部材は次の通りで
あつた。 We drilled 10 holes with a hole diameter of 65 mm and a depth of 1 m.
The anchor of this invention was installed. Each member was as follows.
楔
楔１はアンカ鋼棒３の先端に固着され、先端に
行く程幅の広い断面十字形の角錐体状金物で、開
閉板２を広げる主働用具である。掘削孔の孔径65
mmの例では、楔はテーパの細側寸法ａ＝25mm、大
側寸法ｂ＝40mm、長さ100mm、板厚ｔ＝３mmであ
つた。 Wedge The wedge 1 is fixed to the tip of the anchor steel rod 3, and is a pyramid-shaped metal piece with a cruciform cross section that becomes wider toward the tip, and is the main tool for widening the opening/closing plate 2. Drill hole diameter 65
In the example of mm, the wedge had a tapered narrow side dimension a = 25 mm, a large side dimension b = 40 mm, a length of 100 mm, and a plate thickness t = 3 mm.
開閉板
開閉板２は楔１によりアンカ鋼棒３の軸に対し
て直角方向にスライドして地山に食い込み、定着
部となるアンカ本体で、鋼板等からなる４枚の平
板である。この４枚の平板は第１図ｅに示す同形
のものでＸ軸を90度ずつ転回して積重されてい
る。この４枚の平板はそれぞれ別の四方向に相対
移動し、移動時に平板間表面に摩擦力が働くが、
開閉板２の表面を減磨加工したり表面に減磨材を
塗布したり、開閉板間に減磨ボールを挿入するこ
と等により容易に相互に滑動移動させることがで
きる。 Opening/closing plate The opening/closing plate 2 is an anchor body that slides in a direction perpendicular to the axis of the anchor steel rod 3 by means of a wedge 1 and bites into the ground to serve as an anchoring part, and is made of four flat plates made of steel plates or the like. These four flat plates have the same shape as shown in Figure 1e, and are stacked one on top of the other, rotated 90 degrees about the X axis. These four flat plates each move relative to each other in four different directions, and as they move, frictional force acts on the surfaces between the plates.
The opening/closing plates 2 can be easily slidably moved relative to each other by processing the surfaces of the opening/closing plates 2 to reduce friction, applying an anti-wearing material to the surfaces, or inserting anti-wearing balls between the opening/closing plates.
掘削孔の孔径65mmの例では開閉板の直径60mm、
板厚３mmとし、開閉板が開いたときの４枚の板全
体の外径は約75mmである。 In the case of a drilled hole with a diameter of 65 mm, the diameter of the opening/closing plate is 60 mm.
The plate thickness is 3 mm, and the outer diameter of all four plates when the opening/closing plate is open is approximately 75 mm.
反力パイプ
反力パイプ４は楔１を引上げる際、ジヤツキ５
と開閉板２の間に介在して反力支持材として働
き、開閉板２の掘削孔軸方向への引抜きを阻止す
る。また、反力パイプ４はその先端付近にグラウ
ト用の小穴８があり、開閉板２を定着した後、こ
の小穴８を通してグラウチングを行い、セメント
モルタル等によつてアンカ鋼棒を抱き込んで掘削
孔１０内を充填する。 Reaction pipe Reaction pipe 4 is used for jacking 5 when pulling up wedge 1.
It is interposed between the opening and closing plate 2 and acts as a reaction force support member, and prevents the opening and closing plate 2 from being pulled out in the axial direction of the excavation hole. In addition, the reaction pipe 4 has a small hole 8 for grouting near its tip, and after fixing the opening/closing plate 2, grouting is performed through this small hole 8, and the anchor steel rod is held in with cement mortar etc. to make the excavated hole. Fill within 10.
この反力パイプ４はグラウチング工程中に引抜
き、再利用する。 This reaction pipe 4 is pulled out during the grouting process and reused.
ジヤツキ
ジヤツキ５はアンカ鋼棒３をくわえて引上げる
センターホールタイプのジヤツキを用いる。実施
例では13mmのアンカ鋼棒３を用い、ジヤツキとし
てはねじジヤツキを用い、ハンドル７を回転して
ボス６を引上げアンカ鋼棒３を引張つて楔１によ
り開閉板２を拡げた。 Jacket The jack 5 uses a center hole type jack that holds the anchor steel rod 3 in its mouth and pulls it up. In the example, a 13 mm anchor steel rod 3 was used, a screw jack was used as the jack, the handle 7 was rotated to pull up the boss 6, the anchor steel rod 3 was pulled, and the opening/closing plate 2 was expanded by the wedge 1.
本考案は次の効果を奏する。 The present invention has the following effects.
開閉板を掘削孔軸に直角に地山に貫入する形
式のアースアンカで、開閉板は板状で、貫入す
る先端側を尖らせてあるので、地山への貫入が
容易である。 This type of earth anchor has an opening/closing plate that penetrates into the ground at right angles to the axis of the excavation hole.The opening/closing plate is plate-shaped and has a sharpened end where it penetrates, making it easy to penetrate the ground.
開閉板を四方向に同時にスライドさせる時
に、開閉板は十字形楔に沿つてスライドするの
で、回転や方向のぶれがない。 When sliding the opening/closing plate in four directions simultaneously, the opening/closing plate slides along the cross-shaped wedge, so there is no rotation or directional wobbling.
開閉板、楔共に板状のため構造が単純であ
り、板を加工して極めて容易に製作することが
できる。 Both the opening/closing plate and the wedge have a simple structure because they are plate-shaped, and can be manufactured extremely easily by processing the plate.
反力パイプを抜き取り再利用することができ
る。 The reaction pipe can be extracted and reused.
反力パイプを用いてグラウトをするのでグラ
ウチングが確実である。 Since grouting is done using a reaction pipe, grouting is reliable.
ジヤツキの引上げ長を調整することにより、
掘削孔内における開閉板の拡大幅等を自由に調
整することができる。 By adjusting the pulling length of the jack,
The expansion width of the opening/closing plate inside the excavation hole can be freely adjusted.
第１図は本考案の実施例のアースアンカの先端
定着部を示し、第１図ａは側面図、ｂはＢ−Ｂ矢
視断面図、ｃはＣ−Ｃ矢視断面図、ｄはＤ−Ｄ矢
視断面図、ｅは開閉板の形状の説明図、第２図は
実施例のアースアンカ施工時の掘削孔の縦断面図
でａはアンカ鋼棒引張前、ｂは引張後、第３図は
第２図のＦ−Ｆ矢視図およびＧ−Ｇ矢視図であ
る。
１……楔、２……開閉板、３……アンカ鋼棒、
４……反力パイプ、５……ジヤツキ、７……ジヤ
ツキハンドル、８……小穴、１０……掘削孔。
FIG. 1 shows the tip fixing part of the earth anchor according to the embodiment of the present invention, FIG. -D arrow sectional view, e is an explanatory diagram of the shape of the opening/closing plate, Fig. 2 is a vertical cross-sectional view of the excavated hole during construction of the earth anchor in the example, a is before tensioning the anchor steel bar, b is after tensioning, 3 is a view taken along the line FF and taken along the line GG in FIG. 2. 1...Wedge, 2...Opening/closing plate, 3...Anchor steel rod,
4... Reaction pipe, 5... Jacket, 7... Jacket handle, 8... Small hole, 10... Drilled hole.
Claims (1)
えたアースアンカ。 (イ) 板厚ｔの中心対称十字形断面をなし十字の縦
横寸法がａからｂ（ａ＜ｂ）まで先方に拡がる
テーパおよびその先方に突出部を有する断面十
字形の角錐体状金物から成り、アンカ鋼棒の先
端に同心に寸法ａ側を固着した楔。 (ロ) 円周上の定点から両側に中心角約60度の割円
を欠損した直径ｄの円形輪郭を有し、該定点を
含む直径をＹ軸、これに直交する直径をＸ軸と
したとき、座標 （Ｔ／２，Ａ／２）、（−Ｔ／２，Ａ／２）、
（Ｔ／２，Ｔ／２）、（−Ｔ／２，Ｔ／２）、
（Ａ／２，Ｔ／２）、（−Ａ／２，Ｔ／２）、
（Ｂ／２，−Ｃ／２）、（−Ｂ／２，−Ｃ／２）、
（Ｂ／２，−Ｃ／２−Ｔ）、（−Ｂ／２，−Ｃ／２
−Ｔ）、（Ｔ／２，−Ｃ／２−Ｔ）、（−Ｔ／２，−
Ｃ／２−Ｔ）、（Ｔ／２，−Ｂ／２）、（−Ｔ／２，
−Ｂ／２） を結ぶ孔を穿設した板を90度宛Ｘ軸を転回して
積重し、前記楔に外嵌した４枚の平板。 ただし、ｄ＞（2b−ａ） Ａ：ａが遊嵌する寸法 Ｂ：ｂが遊嵌する寸法 Ｔ：ｔが遊嵌する寸法 Ｃ：（ｂ−ａ−ｔ）／２[Scope of Claim for Utility Model Registration] An earth anchor equipped with a tip fixing part consisting of a combination of the following (a) and (b). (b) Consists of a pyramid-shaped metal piece with a cross-section, which has a centrally symmetrical cross-shaped cross section with a plate thickness of t, a taper whose vertical and horizontal dimensions widen from a to b (a<b), and a protrusion beyond the taper. , a wedge whose dimension a side is fixed concentrically to the tip of the anchor steel rod. (b) It has a circular contour with a diameter d with a secant circle with a central angle of approximately 60 degrees missing on both sides from a fixed point on the circumference, with the diameter including the fixed point being the Y axis, and the diameter perpendicular to this being the X axis. When, coordinates (T/2, A/2), (-T/2, A/2),
(T/2, T/2), (-T/2, T/2),
(A/2, T/2), (-A/2, T/2),
(B/2, -C/2), (-B/2, -C/2),
(B/2, -C/2-T), (-B/2, -C/2
-T), (T/2, -C/2-T), (-T/2, -
C/2-T), (T/2,-B/2), (-T/2,
-B/2) Four flat plates are stacked with holes connecting them rotated 90 degrees around the X axis and fitted onto the wedges. However, d>(2b-a) A: Dimension where a fits loosely B: Dimension where b fits loosely T: Dimension where t fits loosely C: (b-a-t)/2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1299288U JPH0533558Y2 (en) | 1988-02-04 | 1988-02-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1299288U JPH0533558Y2 (en) | 1988-02-04 | 1988-02-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01120536U JPH01120536U (en) | 1989-08-15 |
| JPH0533558Y2 true JPH0533558Y2 (en) | 1993-08-26 |
Family
ID=31222919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1299288U Expired - Lifetime JPH0533558Y2 (en) | 1988-02-04 | 1988-02-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0533558Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101996236B1 (en) * | 2018-11-05 | 2019-07-08 | 대한민국 | Balance weight of the fishing pot for capturing webfoot octupus |
| KR102019155B1 (en) * | 2019-06-14 | 2019-09-10 | 대한민국 | Balance weight of the fishing pot for capturing webfoot octupus. |
-
1988
- 1988-02-04 JP JP1299288U patent/JPH0533558Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01120536U (en) | 1989-08-15 |
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