JP2999190B1 - Expansion type anchor member - Google Patents
Expansion type anchor memberInfo
- Publication number
- JP2999190B1 JP2999190B1 JP34252398A JP34252398A JP2999190B1 JP 2999190 B1 JP2999190 B1 JP 2999190B1 JP 34252398 A JP34252398 A JP 34252398A JP 34252398 A JP34252398 A JP 34252398A JP 2999190 B1 JP2999190 B1 JP 2999190B1
- Authority
- JP
- Japan
- Prior art keywords
- anchor
- tube
- tubular body
- rear end
- anchor member
- 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
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
【要約】
【課題】 地山などの地中に打ち込まれて大きな引き抜
き抵抗力を発揮する打込式アンカー部材を提供する。
【解決手段】 進入部５の後端にネジ軸６を突設すると
共にネジ軸６に、アンカー片２０が周方向に並設された
アンカー筒体７を外挿する。又ネジ軸６の後端側の部分
を、管体１２の前端部分に設けたネジ孔１３に螺合させ
る。管体１２の回転に伴うその前進により、管体の前端
がアンカー筒体７の後端を押圧して、アンカー片２０を
外向きに山形に屈曲させる。又管体１２の前端側の部分
には、グラウトを注入するための流出孔２５が設けられ
ている。The present invention provides a driving-type anchor member that is driven into the ground such as the ground and exhibits a large pull-out resistance. SOLUTION: A screw shaft 6 is protruded from a rear end of an entering portion 5 and an anchor cylinder 7 in which anchor pieces 20 are arranged in a circumferential direction is extrapolated to the screw shaft 6. The rear end of the screw shaft 6 is screwed into a screw hole 13 provided in the front end of the tube 12. With the advance of the tube 12 caused by the rotation thereof, the front end of the tube presses the rear end of the anchor cylinder 7 to bend the anchor piece 20 outwardly into a chevron. An outlet hole 25 for injecting grout is provided at a front end portion of the tube body 12.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、地山等の地中に打
ち込まれて大きな引き抜き抵抗力を発揮する拡大型の打
込式アンカー部材に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an enlarged driving type anchor member which is driven into the ground such as a ground and has a large pull-out resistance.
【０００２】[0002]
【従来の技術】地山等に鉄筋等のアンカー軸を打ち込む
ことにより、該アンカー軸の周面と地山等との摩擦抵抗
によって所要の引き抜き抵抗力を確保することが行われ
ているが、アンカー軸の単位長さ当たりの引き抜き抵抗
力はそれ程大きなものでないために、所定の引き抜き抵
抗力を確保するためには非常に長いアンカー軸を打ち込
む必要があって、施工性が悪く、又経済的な不利益が伴
う問題があった。2. Description of the Related Art An anchor shaft such as a reinforcing bar is driven into a ground or the like to secure a required pull-out resistance force by frictional resistance between a peripheral surface of the anchor shaft and the ground or the like. Since the pull-out resistance per unit length of the anchor shaft is not so large, it is necessary to drive a very long anchor shaft in order to secure a predetermined pull-out resistance, resulting in poor workability and economical efficiency. There was a problem with great disadvantages.
【０００３】そこで、引き抜き抵抗力の向上を達成する
ために、地山等に挿入された後に拡大部を形成するよう
に構成されたアンカー部材も提案されている。該アンカ
ー部材は、内外二重管構造を有してその先端部分に拡大
機構部が設けられた棒状を呈し、ボーリングマシン等に
よる削孔によって形成された挿入孔内に挿入されて後、
油圧ジャッキ等で内管が引っ張られることにより、前記
拡大機構部が傘状に拡大されてアンカー体が形成される
構成のものであった。そして、該アンカー体が形成され
た部分及び前記挿入孔の間隙部分にグラウトが充填され
ることにより、該グラウトの硬化によって、アンカー部
材の周面摩擦抵抗力だけでなくグラウトで固められたア
ンカー体によっても所定の引き抜き抵抗力を発揮するよ
うに構成されていた。[0003] In order to improve the pull-out resistance, there has been proposed an anchor member configured to form an enlarged portion after being inserted into the ground or the like. The anchor member has a rod shape having an inner and outer double pipe structure and an enlargement mechanism portion provided at a tip portion thereof, and after being inserted into an insertion hole formed by drilling by a boring machine or the like,
When the inner pipe is pulled by a hydraulic jack or the like, the enlargement mechanism is enlarged in an umbrella shape to form an anchor body. By filling grout into the portion where the anchor body is formed and the gap between the insertion holes, not only the peripheral surface frictional resistance of the anchor member but also the anchor body hardened with grout by hardening of the grout. Thus, a predetermined pull-out resistance is exhibited.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前記引
っ張り方式による先端拡大型のアンカー部材によるとき
には次のような問題点があった。 (1) ボーリングマシン等で地山等を削孔して形成した挿
入孔に棒状のアンカー部材を挿入していたため、ボーリ
ングマシン等による削孔コストが高くつき、全体として
の施工コストが上昇する問題があった。However, the following problems have been encountered with the anchor member of the above-described type in which the tip is enlarged by the pulling method. (1) Since a rod-shaped anchor member was inserted into an insertion hole formed by drilling a ground or the like with a boring machine, etc., the cost of drilling with a boring machine etc. was high, and the construction cost as a whole increased. was there.
【０００５】(2) 削孔した後にアンカー部材を挿入する
ため、崩れやすい砂質等の土質状態であるときは削孔が
非常に困難となり、又アンカー部材を挿入する際に挿入
孔が崩落してアンカー部材の挿入が困難となったり、削
孔のやり直しが必要となる事態を招く問題があった。(2) Since the anchor member is inserted after drilling, it is very difficult to drill the hole when the soil is in a sandy state or the like which is easily broken, and when the anchor member is inserted, the insertion hole falls. Therefore, there is a problem that it becomes difficult to insert the anchor member or a situation in which drilling needs to be performed again.
【０００６】(3) アンカー部材の挿入を円滑に行わせる
ためには、アンカー部材の外径に比べて孔径が大きい挿
入孔を形成せざるを得ないが、孔径を大きくすると、挿
入孔に充填するためのグラウト量が多くなる結果を招
く。このようにグラウトを充填するのは、アンカー部材
と地山等とをグラウトの硬化物を介して一体化し、アン
カー部材の周面摩擦抵抗力の増大を図らんとするためで
ある。しかし、大きな孔径の挿入孔にグラウトを多量に
充填して過大な摩擦抵抗部を形成したとしても、使用目
的に応じて設定されたアンカー部材そのものの引き抜き
耐力を越えて前記周面摩擦抵抗力だけを不必要に大きく
するだけであり、全く不経済であった。(3) In order to smoothly insert the anchor member, it is necessary to form an insertion hole having a hole diameter larger than the outer diameter of the anchor member, but if the hole diameter is increased, the insertion hole is filled. The amount of grout to be performed is increased. The reason why the grout is filled in this way is to integrate the anchor member and the ground or the like via a hardened grout so as to increase the peripheral frictional resistance of the anchor member. However, even if a large amount of grout is filled into the insertion hole having a large hole diameter to form an excessive friction resistance portion, the peripheral friction resistance force exceeds the pull-out resistance of the anchor member itself set according to the purpose of use. Was simply unnecessarily large, and was completely uneconomical.
【０００７】本発明は、かかる問題点を解決し得る拡大
型の打込式アンカー部材の提供を目的とするものであ
る。[0007] It is an object of the present invention to provide an expandable driving type anchor member which can solve such a problem.
【０００８】[0008]
【課題を解決するための手段】前記課題を解決するた
め、本発明は以下の手段を採用する。即ち本発明に係る
拡大型の打込式アンカー部材（以下打込式アンカー部材
という）は、地中に打ち込まれた状態でアンカー体が拡
大形成せしめられる打込式アンカー部材であって、打ち
込みによって前進でき、且つ地中に食い込む回り止め片
によって軸線回りの回転が阻止されるように構成された
進入部の後端に、後方に向けて延長するネジ軸が突設さ
れると共に、該ネジ軸に、前後方向に延長するスリット
が周方向に並設され、隣り合うスリット間の部分がアン
カー片とされたアンカー筒体が、その前端が前記進入部
の後端に支持された状態で外挿される。そして、前記ネ
ジ軸の後端側の部分が、前記ネジ軸の軸線方向に延長す
る管体の前端部分にその軸線方向に設けたネジ孔に螺合
されており、前記管体の回転に伴う該管体の前進によ
り、該管体の前端が前記アンカー筒体の後端を押圧して
前記アンカー片を外向きに山形に屈曲させてアンカー体
を拡大形成可能となされ、又前記管体の前端側の部分に
は、グラウトを注入するための流出孔が設けられている
ことを特徴とするものである。In order to solve the above-mentioned problems, the present invention employs the following means. That is, the expansion type driving type anchor member according to the present invention (hereinafter referred to as a driving type anchor member) is a driving type anchor member in which the anchor body is expanded and formed while being driven into the ground. A screw shaft extending rearward is provided at the rear end of the approach portion configured to be able to move forward and to be prevented from rotating around the axis by a detent piece that bites into the ground. In the meantime, the slit extending in the front-rear direction is arranged in the circumferential direction, and the portion between the adjacent slits is an anchor piece, and the anchor cylinder is externally inserted with its front end supported by the rear end of the entrance portion. It is. A rear end portion of the screw shaft is screwed into a screw hole provided in a front end portion of the pipe body extending in the axial direction of the screw shaft in the axial direction thereof, and the rotation is caused by the rotation of the pipe body. By the advancement of the tube, the front end of the tube presses the rear end of the anchor cylinder to bend the anchor piece outward in a chevron, thereby enabling the anchor body to be enlarged and formed. An outlet hole for injecting grout is provided at a front end side portion.
【０００９】前記打込式アンカー部材において、前記ア
ンカー筒体の後端と前記管体の前端との間に座金を介装
し、前記管体をその軸線回りに回転させる際に、前記管
体の前端が前記座金の後面に対してスリップするように
構成するのがよい。このとき、前記座金と管体の前端と
の間に潤滑剤を介在させるのが好ましい。In the driving type anchor member, a washer is interposed between a rear end of the anchor cylinder and a front end of the pipe, and when the pipe is rotated around its axis, the pipe is rotated. Is preferably configured so that the front end of the is slipped with respect to the rear surface of the washer. At this time, it is preferable to interpose a lubricant between the washer and the front end of the tube.
【００１０】前記打込式アンカー部材において、前記ア
ンカー筒体の後端と前記管体の前端との間に、アンカー
筒体の軸線回りに回転自在の回転支持部を具えた回転部
材を介装し、前記管体をその軸線回りに回転させる際
に、前記管体の前端を支持する前記回転支持部が前記ア
ンカー筒体の軸線回りに回転するように構成するのがよ
い。In the driving type anchor member, a rotation member having a rotation support portion rotatable around an axis of the anchor cylinder is interposed between a rear end of the anchor cylinder and a front end of the tube. Preferably, when rotating the tube around its axis, the rotation support portion supporting the front end of the tube rotates around the axis of the anchor tube.
【００１１】前記各打込式アンカー部材において、前記
アンカー片を、その前後方向略中央部を境として外側に
稍屈曲させ、前記管体の回転に伴う管体の前進により、
該管体の前端が前記アンカー筒体の後端を押圧して前記
アンカー片を外向きの山形に屈曲するように構成するの
がよい。In each of the driving-type anchor members, the anchor piece is slightly bent outward at a substantially central portion in the front-rear direction, and the pipe is advanced by the rotation of the pipe.
It is preferable that the front end of the tube presses the rear end of the anchor cylinder to bend the anchor piece into an outward chevron.
【００１２】このとき前記アンカー片を、その前後方向
略中央部を境として外側に稍屈曲させると共に、その中
央部を薄肉に形成するのがよい。或いは前記アンカー片
を、その前後方向略中央部を境として外側に稍屈曲させ
ると共に、その中央部の外面に、前記外管の周方向に凹
溝を設けるのがよい。At this time, it is preferable that the anchor piece is slightly bent outward from a substantially central portion in the front-rear direction, and the central portion is formed to be thin. Alternatively, it is preferable that the anchor piece is slightly bent outward from a substantially central portion in the front-rear direction, and a concave groove is provided on an outer surface of the central portion in a circumferential direction of the outer tube.
【００１３】前記各打込式アンカー部材において、前記
アンカー片が山形に屈曲するに伴って拡張して前記アン
カー体の全体を外側から覆った状態となり得る筒状の網
状体を前記アンカー筒体に被せ、且つ該網状体の前後の
端部分をアンカー筒体の前後の端部分に止着するのがよ
い。[0013] In each of the driving-type anchor members, a tubular net-like body that can be expanded as the anchor piece bends in a mountain shape so as to cover the entirety of the anchor body from the outside is formed on the anchor tubular body. It is preferable to cover and fix the front and rear end portions of the mesh body to the front and rear end portions of the anchor cylinder.
【００１４】前記各打込式アンカー部材において、管体
の後端部分に、その後端で開口するネジ孔を管体の軸線
方向に設けるのがよい。[0014] In each of the driving-type anchor members, it is preferable that a screw hole opened at the rear end is provided in a rear end portion of the pipe in the axial direction of the pipe.
【００１５】[0015]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。図１〜４において本発明に係る拡
大型の打込式アンカー部材（以下アンカー部材という）
１は、地中に打ち込まれた状態で先端部分が拡大せしめ
られる所定長さのものであり、先細に形成された円錐部
分２の後端に円柱部分３を同心に連設してなる進入部５
の該円柱部分３の後端に、該進入部と軸線を共通にして
後方に向け延長するネジ軸６を突設すると共に、該ネジ
軸６にアンカー筒体７を、その前端９が前記進入部５の
後端１０に支持された状態で外挿し、前記ネジ軸６の後
端側の部分１１を、該ネジ軸の軸線方向に延長する管体
１２の前端部分にその軸線方向に設けたネジ孔１３に螺
合させてなる。そして、前記管体１２の回転に伴うその
前進により、該管体の前端１５が前記アンカー筒体７の
後端１６を押圧し、図５に示すごとくアンカー筒体７を
拡大させてアンカー体１７を形成するものである。Embodiments of the present invention will be described below with reference to the drawings. 1 to 4, an enlarged driving type anchor member according to the present invention (hereinafter referred to as an anchor member).
Reference numeral 1 denotes an entry portion having a predetermined length whose tip portion is enlarged while being driven into the ground, and which is formed by concentrically connecting a cylindrical portion 3 to a rear end of a tapered conical portion 2. 5
At the rear end of the cylindrical portion 3, a screw shaft 6 extending rearward with an axis common to the entry portion is protruded, and an anchor cylinder 7 is attached to the screw shaft 6, and the front end 9 is provided at the front end. The screw shaft 6 is externally inserted while being supported by the rear end 10 of the portion 5, and the rear end portion 11 of the screw shaft 6 is provided in the front end portion of a tube 12 extending in the axial direction of the screw shaft in the axial direction. It is screwed into the screw hole 13. Then, by the forward movement of the tubular body 12 caused by the rotation of the tubular body 12, the front end 15 of the tubular body presses the rear end 16 of the anchor tubular body 7, and as shown in FIG. Is formed.
【００１６】前記進入部５の円柱部分３には、先端鋭に
形成された例えば板状をなす回り止め片１４，１４が逆
向きに突設されている。The cylindrical portion 3 of the entry portion 5 is provided with, for example, plate-shaped detent members 14 and 14 having a sharp tip and projecting in opposite directions.
【００１７】又前記アンカー筒体７は、図２〜３に示す
ように、例えばステンレス製の筒体１８を以って形成さ
れており、該筒体の両端部分１８ａ，１８ａを除いて、
前後方向に延長するスリット１９が周方向に等角度ピッ
チで例えば９０度の角度ピッチで並設され、隣り合うス
リット間の部分がアンカー片２０とされている。又各ア
ンカー片２０の夫々は、その前後方向中央部を境として
外側に緩い山形に屈曲しており、その中央部の外面に
は、前記アンカー筒体７の周方向に凹溝２１が設けられ
ている。該アンカー筒体７が前記ネジ軸６に外挿される
際、前記アンカー筒体７の後端１６と管体の前端１５と
の間に座金２２が介装されている。本実施の形態におい
ては、前記座金２２と管体の前端１５との間２３にグリ
ース等の潤滑剤を介在させている。As shown in FIGS. 2 and 3, the anchor cylinder 7 is formed of, for example, a cylinder 18 made of stainless steel. Except for both end portions 18a, 18a of the cylinder,
Slits 19 extending in the front-rear direction are arranged at equal angular pitches in the circumferential direction, for example, at an angular pitch of 90 degrees, and a portion between adjacent slits is an anchor piece 20. Further, each of the anchor pieces 20 is bent outwardly in a gentle mountain shape with a center part in the front-rear direction as a boundary, and a concave groove 21 is provided on an outer surface of the center part in a circumferential direction of the anchor cylinder 7. ing. When the anchor cylinder 7 is externally inserted into the screw shaft 6, a washer 22 is interposed between the rear end 16 of the anchor cylinder 7 and the front end 15 of the tube. In the present embodiment, a lubricant such as grease is interposed between the washer 22 and the front end 15 of the tube.
【００１８】前記管体１２は、例えば１．５〜３ｍの長
さの範囲で所要に設定された円管状をなし、その周面部
には、その前側の部分に、グラウトの流出孔２５が設け
られている。The tubular body 12 is formed in a tubular shape having a required length in a range of, for example, 1.5 to 3 m, and a grout outflow hole 25 is provided at a peripheral portion thereof at a front portion thereof. Have been.
【００１９】又、該管体１２の後端部分をなすナット部
２６からなる、管体軸線方向に延びる後ネジ孔２４に
は、保護ボルト２８のネジ軸２９が螺合せしめられ、そ
の頭部３０が、アンカー部材１を打ち込む際の衝撃によ
って管体１２が損傷を受けるのを防止する。A screw shaft 29 of a protection bolt 28 is screwed into a rear screw hole 24 formed of a nut portion 26 forming a rear end portion of the tube 12 and extending in the tube axis direction. 30 prevents the pipe 12 from being damaged by the impact when the anchor member 1 is driven.
【００２０】図６には、かかる構成のアンカー部材１を
打ち込む際に用いる補助具３１が示されている。該補助
具３１は、その前端部分に、前記ナット部２６及び前記
保護ボルトの頭部３０を収容させ得る収容孔３３が設け
られている。FIG. 6 shows an auxiliary tool 31 used for driving the anchor member 1 having such a configuration. The auxiliary tool 31 is provided at its front end with a receiving hole 33 for receiving the nut portion 26 and the head 30 of the protection bolt.
【００２１】然して、かかる構成を有する補助具３１を
用いて前記アンカー部材１を例えば地山３５に稍下方に
傾斜した状態で打ち込むには、次のように行う。先ず、
地山の法面３６の一部分を切り取ることによって図７に
示すような略垂直な面３７を形成し、該略垂直な面３７
の所要部位に前記進入部５の先端部分を、図７に一点鎖
線で示すように押し当てて、アンカー部材１を所要の傾
斜状態（例えば、水平線に対して５〜１０度傾斜した状
態）にセットする。然る後図８に示すように、補助具３
１の前記収容孔３３に前記ナット部２６及び前記保護ボ
ルトの頭部３０を収容し、この状態で、補助具後端３９
を、図示しない打撃装置によって矢印で示すように打撃
すると、進入部５及び回り止め片１４の進入によって、
地山３５へのアンカー部材１の打ち込みは円滑に行われ
る。そして図９に示すように、管体１２の後端部分４０
が前記面３７に稍突出した状態にまで打ち込まれて後、
図１０に示すように前記補助具３１を取り外す。However, when the anchor member 1 is driven into the ground 35 in a state of being inclined slightly downward, for example, by using the auxiliary tool 31 having the above-described configuration, the following is performed. First,
By cutting off a part of the slope 36 of the ground, a substantially vertical surface 37 as shown in FIG.
7 is pressed against the required portion as shown by a dashed line in FIG. 7 to bring the anchor member 1 into a required inclined state (for example, a state inclined by 5 to 10 degrees with respect to a horizontal line). set. Then, as shown in FIG.
1, the nut portion 26 and the head 30 of the protection bolt are accommodated in the accommodation hole 33, and in this state, the auxiliary tool rear end 39
Is struck by a striking device (not shown) as shown by an arrow.
The anchor member 1 is driven into the ground 35 smoothly. Then, as shown in FIG.
Is driven into the state where it slightly protrudes from the surface 37,
The auxiliary tool 31 is removed as shown in FIG.
【００２２】然る後、前記保護ボルト２９を取り外し、
前記ナット部２６を例えば図１１に示すようにインパク
トレンチ４１で保持して管体１２をその軸線回りに回転
させる。そのとき、前記回り止め片１４，１４が地中に
食い込んでいるため進入部５は回り止めされる。従っ
て、前記ネジ軸６の後端側の部分１１が前記ネジ孔１３
で螺進するに伴い、図４（Ｂ）を参照すれば、管体の前
端１５が前記アンカー筒体７の後端１６を押圧すること
となる。この際、前記管体の前端１５が前記座金２２の
後面４２に対してスリップできる。本実施の形態におい
ては、前記のように、前記座金２２と管体の前端１５と
の間２３にグリース等の潤滑剤が介在されているため、
前記スリップがより円滑に行われ、従って、管体１２の
回転によってアンカー筒体７が捩じれる恐れがない。Thereafter, the protection bolt 29 is removed,
The nut portion 26 is held by an impact wrench 41, for example, as shown in FIG. 11, and the tube 12 is rotated around its axis. At that time, since the detent pieces 14 and 14 are digging into the ground, the approach portion 5 is detented. Therefore, the rear end portion 11 of the screw shaft 6 is
4 (B), the front end 15 of the tube presses the rear end 16 of the anchor cylinder 7. At this time, the front end 15 of the tube can slip with respect to the rear surface 42 of the washer 22. In the present embodiment, as described above, since a lubricant such as grease is interposed between the washer 22 and the front end 15 of the pipe body,
The slip is performed more smoothly, and therefore, there is no possibility that the rotation of the pipe 12 causes the anchor cylinder 7 to be twisted.
【００２３】その結果図１２、図５に示すように、各ア
ンカー片２０を外向きの山形に屈曲させることができ前
記アンカー体１７を形成できる。該アンカー片２０の屈
曲状態は、管体１２の回転量に応じて規制できる。な
お、アンカー体１７を形成したときのインパクトレンチ
４１の前進状態は図１１に一点鎖線で示されている。As a result, as shown in FIGS. 12 and 5, each anchor piece 20 can be bent in an outward chevron shape, and the anchor body 17 can be formed. The bending state of the anchor piece 20 can be regulated according to the rotation amount of the tube 12. The advance state of the impact wrench 41 when the anchor body 17 is formed is shown by a dashed line in FIG.
【００２４】前記アンカー筒体７を図１２に示すように
傘状に拡大してアンカー体１７を形成した後、前記管体
１２の後端から注入管４５を挿入し、注入管端部を管体
前端に位置させる。この状態でグラウトを供給すると、
該注入管端部から供給されたグラウトは前記前端の流出
孔（１番目の流出孔）２５ａから流出して、図１２に一
点鎖線で囲むように、前記アンカー体１７が形成された
部分４６及び進入部と地山と隙間部分４９に充填され
る。その後、前記注入管４５を引き出して、注入管端部
を図１２に示す２番目の流出孔２５ｂが存する部分に位
置させ、この状態でグラウトを供給すると、注入管端部
から供給されたグラウトは該２番目の流出孔２５ｂから
流出して、図１２に一点鎖線で囲むように、管体と地山
の隙間部分４９に充填される。同様に注入管４５を引き
出して３番目の流出孔２５ｃからのグラウト流出を行
う。After the anchor cylinder 7 is expanded into an umbrella shape as shown in FIG. 12 to form an anchor body 17, an injection tube 45 is inserted from the rear end of the tube 12, and the end of the injection tube is connected to the tube. Position at the front end. When grout is supplied in this state,
The grout supplied from the end of the injection pipe flows out from the outflow hole (first outflow hole) 25a at the front end, and the portion 46 where the anchor body 17 is formed is surrounded by a dashed line in FIG. The entrance portion, the ground and the gap portion 49 are filled. Thereafter, the injection pipe 45 is pulled out, and the end of the injection pipe is positioned at a portion where the second outlet hole 25b shown in FIG. 12 is present. When grout is supplied in this state, the grout supplied from the end of the injection pipe is It flows out from the second outlet hole 25b and fills the gap 49 between the pipe and the ground so as to be surrounded by the dashed line in FIG. Similarly, the injection pipe 45 is pulled out to perform grout outflow from the third outflow hole 25c.
【００２５】該管体１２内に注入されたグラウトは、前
記のように流出され、拡大したアンカー体１７内や管体
１２の周囲部分に充填され、アンカー部材１の前端部分
には、硬化したグラウトによって球根状塊５０が形成さ
れ、且つ管体の周囲部分の隙間部分にグラウトの硬化物
が形成される。なお、前記のようにアンカー部材を稍傾
斜した状態で打ち込むため、グラウト注入の際、管体後
端からの空気抜きが円滑に行われる。The grout injected into the tubular body 12 flows out as described above and fills the expanded anchor body 17 and the surrounding portion of the tubular body 12, and is hardened at the front end of the anchor member 1. The bulbous mass 50 is formed by the grout, and a hardened grout is formed in the gap around the tube. In addition, since the anchor member is driven in a slightly inclined state as described above, air is smoothly vented from the rear end of the tubular body during grouting.
【００２６】その結果、この前端部分の球根状塊５０に
よる引き抜き抵抗力、及び、前記硬化物を介して地山と
一体化した管体１２の周面摩擦抵抗力によって、大きな
引き抜き抵抗力が発揮されることになる。As a result, a large pull-out resistance is exerted by the pull-out resistance by the bulb-shaped mass 50 at the front end portion and the peripheral surface frictional resistance of the tube 12 integrated with the ground through the hardened material. Will be done.
【００２７】その結果、前記球根状塊５０による引き抜
き抵抗力、及び、硬化物を介して地山と一体化した外管
の周面摩擦抵抗力によって、大きな引き抜き抵抗力が発
揮されることになる。As a result, a large pull-out resistance is exerted by the pull-out resistance by the bulbous mass 50 and the peripheral surface frictional resistance of the outer tube integrated with the ground through the hardened material. .
【００２８】このような引き抜き抵抗力を発揮する打込
式アンカー部材は、例えば図１３に示すような階段状の
植栽部５１を形成する際の柵状物５２の支持に用いら
れ、例えば図１４に示すように、前記管体１２の後端部
分の後ネジ孔２４に螺合された固定杆５３の先端部５５
を、前記柵状物５２を構成する支柱５６（図１３）に固
定して行う。The driving-type anchor member exhibiting such pull-out resistance is used for supporting a fence 52 when forming a stepped planting portion 51 as shown in FIG. 13, for example. As shown in FIG. 14, the distal end portion 55 of the fixed rod 53 screwed into the rear screw hole 24 of the rear end portion of the tubular body 12
Is fixed to a support 56 (FIG. 13) constituting the fence 52.
【００２９】〔その他の実施の形態〕 (1) 前記アンカー筒体７の前端は、前記のように単に当
接状態にする他、前記進入部５に固着してもよい。[Other Embodiments] (1) The front end of the anchor cylinder 7 may be fixed to the entry portion 5 in addition to being simply brought into contact as described above.
【００３０】(2) 図１５は、前記アンカー筒体７の後端
と前記管体１２との間に、アンカー筒体の軸線回りに回
転自在の回転支持部５７を具えた回転部材５９が介装し
た態様を示している。このように構成するときは、前記
管体１２をその軸線回りに回転させる際に、前記管体の
前端１５を支持する回転支持部５１を前記アンカー筒体
７の軸線回りにより軽く回転させることができて好まし
い。(2) FIG. 15 shows a rotation member 59 having a rotation support portion 57 rotatable around the axis of the anchor cylinder between the rear end of the anchor cylinder 7 and the tube 12. 1 shows a mounted embodiment. In such a configuration, when rotating the tube 12 around its axis, the rotation support portion 51 that supports the front end 15 of the tube may be rotated slightly around the axis of the anchor tube 7. It is possible and preferable.
【００３１】(3) 進入部に設ける回り止め片は、地中に
食い込んで管体の回転時における回りの止めを達成させ
るものであれば、その形態は問わない。(3) The form of the detent piece provided at the entrance portion is not limited as long as it can penetrate into the ground to achieve the detent during rotation of the tube.
【００３２】(4) 前記のように拡大形成されたアンカー
体１７内にグラウトを注入し、その硬化によって例えば
図１２に一点鎖線で囲むように球根状塊５０を形成する
際、隣り合う屈曲したアンカー片２０，２０間の開放部
６０（図１８）を通して大きい土塊がアンカー体１７内
に入り込むことにより、前記球根状塊５０の強度がそれ
だけ弱くなる恐れがある。そこで、これを防止するため
に、図１６に示すように、前記アンカー筒体７に筒状の
網状体６１を予め被せておくのがよい。該網状体６１
は、例えば金網を用いて筒状に構成することができ、前
記アンカー片２０が山形に屈曲するに伴って図１７に示
すように袋状に拡張し前記アンカー体１７の全体を外側
から覆うものであり、その前後の筒状端部分６２，６３
を、前記アンカー筒体７の前後の端部分６５，６６に溶
接等の手段によって止着する。そして該網状体の中間部
分６７は、図１８に示すように袋状に拡張できる余裕を
有しており、例えば図１８〜１９に示すように、周方向
に適宜に折り畳まれて筒状に形成されている。(4) When grout is injected into the anchor body 17 which has been enlarged as described above, and the hardened material forms a bulbous mass 50 so as to be surrounded by a dashed line in FIG. When the large earth mass enters the anchor body 17 through the opening 60 (FIG. 18) between the anchor pieces 20, 20, the strength of the bulb mass 50 may be reduced accordingly. Therefore, in order to prevent this, as shown in FIG. 16, it is preferable to cover the anchor cylinder 7 with a tubular mesh 61 in advance. The net 61
Can be formed into a tubular shape using, for example, a wire mesh, and as the anchor piece 20 bends in a mountain shape, expands in a bag shape as shown in FIG. 17 to cover the entirety of the anchor body 17 from outside. And cylindrical end portions 62 and 63 before and after the end portions.
Is fixed to the front and rear end portions 65 and 66 of the anchor cylinder 7 by means such as welding. The intermediate portion 67 of the mesh body has a margin that can be expanded in a bag shape as shown in FIG. Have been.
【００３３】前記のように拡張した網状体６１は、山形
の屈曲状態にある隣り合うアンカー片２０，２０間に形
成された前記開放部６０を覆うため、拡張したアンカー
体１７内に大きな土塊が侵入するのを該網状体６１の網
目で阻止できることになり、従って前記球根状塊５０の
強度を高く保つことが可能となる。該筒状の網状体６１
は、このように金網を用いて構成することの他、樹脂製
の網状物を用いたり、多数の孔が設けられてなる孔明き
の樹脂シート等を用いて形成することもできる。又、筒
状体の前後の端部分をアンカー筒体の前後の端部分に止
着する手段は、本発明に係るアンカー部材１を打ち込む
際に網状体が外れない手段であれば各種の止着手段を採
用できる。The expanded mesh member 61 covers the open portion 60 formed between the adjacent anchor pieces 20 in the angled bent state, so that a large earth mass is formed in the expanded anchor member 17. Intrusion can be prevented by the mesh of the mesh body 61, so that the strength of the bulbous mass 50 can be kept high. The tubular net 61
Can be formed using a resin net, a perforated resin sheet having a large number of holes, or the like, instead of using a wire net as described above. Means for fixing the front and rear end portions of the tubular body to the front and rear end portions of the anchor tubular body may be any of various fastening means as long as the mesh body does not come off when the anchor member 1 according to the present invention is driven. Means can be adopted.
【００３４】(5) 本発明に係るアンカー部材は、盛土さ
れた部分に打ち込んで使用されることもある。(5) The anchor member according to the present invention may be used by driving into an embankment.
【００３５】[0035]
【発明の効果】本発明は以下の如き優れた効果を奏す
る。 (1) 本発明に係る打込式アンカー部材によるときは、こ
れが地山等に所要に打ち込まれて後、アンカー体を拡大
形成でき、該アンカー体が拡大形成された部分に、グラ
ウトの硬化物による球根状塊を形成できる。又、外管と
挿入孔内周面との隙間部分にグラウトの硬化物を充填す
ることもできる。従って本発明によるときは、拡大した
アンカー体による引き抜き抵抗力が発揮され、又アンカ
ー部材の外管外周面における周面摩擦抵抗力も発揮され
得るため、全体として大きな引き抜き抵抗力を確保でき
ることとなる。このように大きな引き抜き抵抗力が発揮
される結果、本発明に係る打込式アンカー部材は、前記
のように傾斜方向や垂直方向等、目的に応じて各種の方
向に打ち込まれ、アンカー体が拡大形成せしめられるこ
とにより、その所要の引き抜き抵抗力によって、法面に
設置した柵状構造物等の構造物を支持したり、地下埋設
の土木構造物が浮力で浮き上がったり傾いたりするのを
効果的に防止できることとなる。なおグラウトの充填に
よる引き抜き抵抗力の増大は、地山等に削孔して形成し
た挿入孔にアンカー部材を挿入して後その先端部分を拡
大させ、アンカー部材の周面と挿入孔の内周面との間に
グラウトを充填する前記従来の挿入拡大型アンカー部材
によっても達成されはするが、この場合は前記したよう
に、不必要に多量のグラウトを注入せざるを得ず施工コ
ストの上昇を招く不経済があったのであるが、本発明に
よるときは、アンカー部材の引き抜き耐力に見合った周
面摩擦抵抗を確保するに必要な少ない量のグラウト充填
で所望の引き抜き抵抗力を確保できる経済性が得られ
る。The present invention has the following excellent effects. (1) When the anchor member according to the present invention is used, the anchor body can be enlarged and formed after the anchor member is driven into a ground or the like as required. Can form a bulbous mass. Further, the gap between the outer tube and the inner peripheral surface of the insertion hole can be filled with a cured grout. Therefore, according to the present invention, since the pull-out resistance by the expanded anchor body is exerted and the peripheral surface frictional resistance on the outer peripheral surface of the outer tube of the anchor member can be exerted, a large pull-out resistance can be secured as a whole. As a result of such a large pull-out resistance being exerted, the driving-type anchor member according to the present invention is driven in various directions such as the inclined direction and the vertical direction as described above, depending on the purpose, and the anchor body expands. By being formed, the required pull-out resistance effectively supports structures such as fence-like structures installed on slopes, and effectively lifts or tilts underground civil engineering structures by buoyancy. Can be prevented. The increase in the pull-out resistance due to the filling of the grout is achieved by inserting an anchor member into an insertion hole formed by drilling a ground or the like, expanding the tip portion thereof, and then expanding the peripheral surface of the anchor member and the inner circumference of the insertion hole. This can also be achieved by the conventional insertion and expansion type anchor member in which grout is filled between surfaces, but in this case, as described above, an unnecessarily large amount of grout must be injected, and the construction cost increases. However, according to the present invention, it is economical to secure a desired pull-out resistance with a small amount of grout filling necessary to secure a peripheral friction resistance corresponding to the pull-out resistance of the anchor member. Property is obtained.
【００３６】(2) 本発明によるときは、強度の低い土質
に対しても、アンカー筒部を構成するアンカー片の長さ
やアンカー片の本数又、アンカー筒部の段数を所要に設
定することにより、土質に適合した最適な引き抜き抵抗
力を確保できることになる。(2) According to the present invention, the length of the anchor pieces constituting the anchor tube, the number of anchor pieces, and the number of steps of the anchor tube are set as required even for soil having low strength. As a result, it is possible to secure the optimal pull-out resistance suitable for the soil.
【００３７】(3) 本発明に係るアンカー部材は打込式の
ものであるため、前記した従来の挿入拡大型アンカー部
材を用いる施工におけるようなボーリングマシン等によ
る削孔が全く不必要となって省力化を達成でき、この面
でも施工コストの低減を図り得る。(3) Since the anchor member according to the present invention is of the driving type, drilling by a boring machine or the like as in the above-mentioned construction using the conventional insertion expanding type anchor member is completely unnecessary. Labor saving can be achieved, and construction costs can be reduced in this aspect as well.
【００３８】(4) 更に従来の挿入拡大型アンカー部材に
よるときは、崩れやすい土質状態では孔壁が崩落してア
ンカー部材の挿入が困難となったり、削孔のやり直しが
必要となる事態を招くことがあったが、打込方式を採用
する本発明によるときは、このような問題を発生させ
ず、土質を問わないで採用できる利点がある。(4) Further, in the case of the conventional insertion-enlarged anchor member, the hole wall collapses in a soil state that easily collapses, and it becomes difficult to insert the anchor member, or it becomes necessary to perform drilling again. However, according to the present invention employing the driving method, there is an advantage that such a problem does not occur and the method can be adopted regardless of soil properties.
【００３９】(5) アンカー筒体は、目視不能の地中で拡
大されるものであるが、ネジ回転方式によってアンカー
筒体を拡大させる本発明によるときは、管体の前進量を
その回転数に応じて規制できるため、地中におけるアン
カー片の屈曲を所要に規制できることとなり、これによ
って所望の引抜き抵抗力を得ることが可能になる。(5) The anchor cylinder is expanded under the ground where it is not visible. However, according to the present invention in which the anchor cylinder is expanded by the screw rotation method, the amount of advance of the pipe is determined by its rotation speed. Therefore, the bending of the anchor piece in the ground can be regulated as required, and a desired pull-out resistance can be obtained.
【００４０】(6) 前記アンカー筒体の後端と前記管体の
前端との間に座金を介装するときは、前記管体をその軸
線回りに回転させる際に、前記管体の前端を、前記座金
の後面に対してスリップさせることが容易となる。特
に、前記座金と管体の前端との間に潤滑剤を介在させる
ときは、スリップをより円滑に行わせることができる。
又前記アンカー筒体の後端と前記管体の前端との間に、
アンカー筒体の軸線回りに回転自在の回転支持部を具え
た回転部材が介装させるときは、前記管体をその軸線回
りに回転させる際に、前記管体の前端を支持する前記回
転支持部を前記アンカー筒体の軸線回りにより軽く回転
させることができて好ましい。従ってこのように構成す
ることにより、管体を回転させるときに発生する摩擦力
によってアンカー筒体に捩じれ変形を生じさせる恐れを
回避でき、アンカー筒体を確実に拡大させて効果的な引
き抜き抵抗力を発揮させることが可能となる。(6) When a washer is interposed between the rear end of the anchor cylinder and the front end of the tube, the front end of the tube is rotated when the tube is rotated around its axis. This makes it easy to slip the rear surface of the washer. In particular, when a lubricant is interposed between the washer and the front end of the tube, the slip can be performed more smoothly.
Also, between the rear end of the anchor cylinder and the front end of the tube,
When a rotating member having a rotation support portion rotatable around the axis of the anchor cylinder is interposed, the rotation support portion supporting the front end of the tube when rotating the tube around the axis. Can be more easily rotated around the axis of the anchor cylinder. Therefore, with this configuration, it is possible to avoid the possibility that the anchor cylinder is twisted and deformed due to the frictional force generated when the pipe is rotated. Can be exhibited.
【００４１】(7) 前記アンカー片を、その前後方向略中
央部を境として外側に稍屈曲させることにより、その前
後方向略中央部を境としての山形屈曲を確実化できる。
更に、その中央部を、アンカー筒部の周方向に凹溝を設
ける等によって薄肉に形成することにより、前記山形屈
曲を一層確実化できる。(7) By bending the anchor piece slightly outward with a substantially central portion in the front-rear direction as a boundary, it is possible to ensure a mountain-shaped bending with a substantially central portion in the front-rear direction as a boundary.
Further, by forming the center portion to be thin by providing a concave groove in the circumferential direction of the anchor tube portion, the angle-shaped bending can be further ensured.
【００４２】(8) 本発明に係る打込式アンカー部材は、
簡易な筒状構成のアンカー筒体を用いてアンカー体を拡
大形成する構成であって、ネジ軸に螺合するナット部を
一端に具え且つ他端がネジ軸に対して枢着されるといっ
た特別構造のアンカー装置を用いる構成等ではない。従
って本発明に係る打込式アンカー部材は、量産容易なア
ンカー筒体を用いて比較的低コストで製造可能である。(8) The driving type anchor member according to the present invention comprises:
This is a configuration in which the anchor body is enlarged and formed by using an anchor cylinder having a simple tubular configuration, and has a nut portion screwed to the screw shaft at one end and the other end pivotally attached to the screw shaft. It is not a configuration using an anchor device having a structure. Therefore, the driving-type anchor member according to the present invention can be manufactured at a relatively low cost using an anchor cylinder body that can be easily mass-produced.
【００４３】(9) 内管の後端部分に、その軸線方向にネ
ジ孔を設けるときは、該ネジ孔に保護ボルトをねじ込む
ことによって、アンカー部材を打ち込む際の衝撃をこの
保護ボルトで受けることができるため、打ち込み時の衝
撃等によって内管が損傷を受ける恐れを防止できる。(9) When a screw hole is provided in the rear end portion of the inner pipe in the axial direction thereof, a protection bolt is screwed into the screw hole to receive an impact when the anchor member is driven in with the protection bolt. Therefore, it is possible to prevent the inner pipe from being damaged by an impact or the like at the time of driving.
【００４４】(10) 特に、アンカー筒体に予め筒状の網
状体を被せておくときは、アンカー片が山形に屈曲する
ことによってアンカー体が拡大形成される際、隣り合う
屈曲したアンカー片間の開放部を通してアンカー体内に
大きい土塊が入り込む恐れを、袋状に拡張した網状体に
よって防止できるため、アンカー体内へのグラウトの注
入によって形成された球根状塊の強度を高く維持できる
ことになる。(10) In particular, when the tubular tubular body is previously covered with the anchor tubular body, when the anchor body is expanded and formed by bending the anchor piece into a mountain shape, the distance between the adjacent bent anchor pieces is increased. Since the danger of a large earth mass entering the anchor body through the opening of the anchor body can be prevented by the reticulated body expanded in a bag shape, the strength of the bulb-shaped mass formed by injecting grout into the anchor body can be maintained high.
【図１】本発明に係る打込式アンカー部材を示す側面図
である。FIG. 1 is a side view showing a drive-in type anchor member according to the present invention.
【図２】その部分斜視図である。FIG. 2 is a partial perspective view thereof.
【図３】その分解斜視図である。FIG. 3 is an exploded perspective view thereof.
【図４】その前側の部分を示す一部断面図である。FIG. 4 is a partial cross-sectional view showing a front portion thereof.
【図５】アンカー体を拡大形成した状態を示す斜視図で
ある。FIG. 5 is a perspective view showing a state where an anchor body is enlarged and formed.
【図６】アンカー部材を打ち込むための補助具を示す斜
視図である。FIG. 6 is a perspective view showing an auxiliary tool for driving an anchor member.
【図７】アンカー部材の打ち込み初めの工程を説明する
側面図である。FIG. 7 is a side view illustrating a process at the beginning of driving of the anchor member.
【図８】アンカー部材の後側部分に補助具を装着した状
態を示す一部断面側面図である。FIG. 8 is a partial cross-sectional side view showing a state where an auxiliary tool is attached to a rear portion of the anchor member.
【図９】アンカー部材の打ち込み完了状態を示す側面図
である。FIG. 9 is a side view showing a state where the driving of the anchor member is completed.
【図１０】その完了状態において補助具を取り外した状
態を示す側面図である。FIG. 10 is a side view showing a state where the auxiliary tool is removed in the completed state.
【図１１】アンカー部材の後端部分にインパクトレンチ
を装着した状態を示す断面図である。FIG. 11 is a cross-sectional view showing a state in which an impact wrench is attached to a rear end portion of the anchor member.
【図１２】アンカー体を拡大形成した状態をグラウトの
注入状態と共に示す側面図である。FIG. 12 is a side view showing a state where the anchor body is enlarged and formed, together with a grout injection state.
【図１３】本発明に係るアンカー部材が支持する階段状
の植栽部を示す斜視図である。FIG. 13 is a perspective view showing a stair-shaped planting part supported by the anchor member according to the present invention.
【図１４】図１３に示す植栽部を構成する支柱を、打ち
込んだアンカー部材に連結した固定杆で固定した状態を
示す断面図である。FIG. 14 is a cross-sectional view showing a state in which a column constituting the planting section shown in FIG. 13 is fixed by a fixed rod connected to a hammered-in anchor member.
【図１５】アンカー筒体の後端と管体との間に回転部材
を介装したアンカー部材を示す部分断面図である。FIG. 15 is a partial cross-sectional view showing an anchor member in which a rotating member is interposed between a rear end of the anchor cylinder and a tube.
【図１６】アンカー筒部を網状体で覆った状態を示す斜
視図である。FIG. 16 is a perspective view showing a state in which the anchor tube portion is covered with a mesh.
【図１７】拡張した網状体がアンカー体を覆った状態を
示す斜視図である。FIG. 17 is a perspective view showing a state where the expanded mesh body covers the anchor body.
【図１８】網状体の折り畳まれた中間部分を示す断面図
である。FIG. 18 is a cross-sectional view showing a folded intermediate portion of the mesh body.
【図１９】網状体の折り畳み状態を示す部分斜視図であ
る。FIG. 19 is a partial perspective view showing a folded state of the mesh body.
１ アンカー部材 ５ 進入部 ６ ネジ軸 ７ アンカー筒体 １３ ネジ孔 １７ アンカー体 １９ スリット ２０ アンカー片 ２１ 凹溝 ２２ 座金 ２５ 流出孔 ２４ 後ネジ孔 ２８ 保護ボルト ３０ 頭部 ３１ 補助具 ５０ 球根状塊 ６１ 筒状の網状体 DESCRIPTION OF SYMBOLS 1 Anchor member 5 Entry part 6 Screw shaft 7 Anchor cylinder 13 Screw hole 17 Anchor body 19 Slit 20 Anchor piece 21 Concave groove 22 Washer 25 Outflow hole 24 Rear screw hole 28 Protective bolt 30 Head 31 Auxiliary tool 50 Bulb-like mass 61 Tubular mesh
Claims (9)
拡大形成せしめられる打込式アンカー部材であって、打
ち込みによって前進でき、且つ地中に食い込む回り止め
片によって軸線回りの回転が阻止されるように構成され
た進入部の後端に、後方に向けて延長するネジ軸が突設
されると共に、該ネジ軸に、前後方向に延長するスリッ
トが周方向に並設され、隣り合うスリット間の部分がア
ンカー片とされたアンカー筒体が、その前端が前記進入
部の後端に支持された状態で外挿されると共に、前記ネ
ジ軸の後端側の部分が、前記ネジ軸の軸線方向に延長す
る管体の前端部分にその軸線方向に設けたネジ孔に螺合
されており、前記管体の回転に伴う該管体の前進によ
り、該管体の前端が前記アンカー筒体の後端を押圧して
前記アンカー片を外向きに山形に屈曲させてアンカー体
を拡大形成可能となされ、又前記管体の前端側の部分に
は、グラウトを注入するための流出孔が設けられている
ことを特徴とする拡大型の打込式アンカー部材。1. A driving type anchor member in which an anchor body is expanded and formed in a state of being driven into the ground, wherein the rotation around the axis is prevented by a detent piece which can be advanced by driving and bites into the ground. A screw shaft extending rearward is protrudingly provided at the rear end of the entrance portion configured as described above, and slits extending in the front-rear direction are provided in the screw shaft in the circumferential direction, and adjacent slits are provided. An anchor cylinder body between which an anchor piece is an anchor piece is extrapolated while its front end is supported by the rear end of the entry portion, and the rear end portion of the screw shaft is the axis of the screw shaft. The front end portion of the tubular body that extends in the direction is screwed into a screw hole provided in the axial direction of the tubular body, and the forward end of the tubular body accompanying the rotation of the tubular body causes the front end of the tubular body to be in the anchor tubular body. Press the rear end to turn the anchor piece outward The anchor body can be formed in an enlarged shape by bending it into a mountain shape, and an outflow hole for injecting grout is provided at a front end side portion of the tube body. Built-in anchor member.
端との間に座金が介装されており、前記管体をその軸線
回りに回転させる際に、前記管体の前端が前記座金の後
面に対してスリップするようにしたことを特徴とする請
求項１記載の拡大型の打込式アンカー部材。2. A washer is interposed between a rear end of the anchor tube and a front end of the tube, and when the tube is rotated around its axis, the front end of the tube is 2. The expandable driving anchor member according to claim 1, wherein said anchor member is adapted to slip against a rear surface of said washer.
介在させたことを特徴とする請求項２記載の拡大型の打
込式アンカー部材。3. The enlarged driving type anchor member according to claim 2, wherein a lubricant is interposed between said washer and a front end of the tube.
端との間に、アンカー筒体の軸線回りに回転自在の回転
支持部を具えた回転部材が介装されており、前記管体を
その軸線回りに回転させる際に、前記管体の前端を支持
する前記回転支持部が前記アンカー筒体の軸線回りに回
転するようにしたことを特徴とする請求項１記載の拡大
型の打込式アンカー部材。4. A rotating member having a rotation supporting portion rotatable around an axis of the anchor cylinder is interposed between a rear end of the anchor cylinder and a front end of the tube. 2. The enlarged type according to claim 1, wherein, when the body is rotated around its axis, the rotation support portion supporting the front end of the tube body rotates around the axis of the anchor cylinder. Driving anchor member.
部を境として外側に稍屈曲させてなり、前記管体の回転
に伴う管体の前進により、該管体の前端が前記アンカー
筒体の後端を押圧して前記アンカー片を外向きの山形に
屈曲させるようにしたことを特徴とする請求項１〜４の
いずれかに記載の拡大型の打込式アンカー部材。5. The anchor piece is slightly bent outward with a substantially central portion in the front-rear direction as a boundary, and the forward end of the tubular body is rotated by the rotation of the tubular body so that the front end of the tubular body becomes the anchor tubular body. 5. The enlarged driving type anchor member according to claim 1, wherein a rear end is pressed to bend the anchor piece into an outward chevron shape. 6.
部を境として外側に稍屈曲させると共に、その中央部を
薄肉に形成したことを特徴とする請求項５記載の拡大型
の打込式アンカー部材。6. The expansion type driving method according to claim 5, wherein the anchor piece is slightly bent outward with a substantially central portion in the front-rear direction as a boundary, and the central portion is formed thin. Anchor member.
部を境として外側に稍屈曲させると共に、その中央部の
外面に、前記外管の周方向に凹溝を設けたことを特徴と
する請求項５記載の拡大型の打込式アンカー部材。7. The anchor piece is slightly bent outward with a substantially central portion in the front-rear direction as a boundary, and a concave groove is provided on an outer surface of the central portion in a circumferential direction of the outer tube. An expandable driving anchor member according to claim 5.
て拡張し前記アンカー体の全体を外側から覆った状態と
なり得る筒状の網状体を前記アンカー筒体に被せ、且つ
該網状体の前後の端部分をアンカー筒体の前後の端部分
に止着することを特徴とする請求項１〜７のいずれかに
記載の拡大型の打込式アンカー部材。8. A tubular mesh body which expands as the anchor piece bends in a mountain shape and can be in a state of covering the whole of the anchor body from the outside, and covers the anchor tubular body, and the front and rear of the mesh body The enlarged driving type anchor member according to any one of claims 1 to 7, wherein the end portions are fixed to front and rear end portions of the anchor cylinder.
後ネジ孔を管体の軸線方向に設けたことを特徴とする請
求項１〜８のいずれかに記載の拡大型の打込式アンカー
部材。9. The enlarged punch according to claim 1, wherein a rear screw hole which is opened at the rear end is provided in a rear end portion of the tubular body in an axial direction of the tubular body. Built-in anchor member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34252398A JP2999190B1 (en) | 1998-12-02 | 1998-12-02 | Expansion type anchor member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34252398A JP2999190B1 (en) | 1998-12-02 | 1998-12-02 | Expansion type anchor member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2999190B1 true JP2999190B1 (en) | 2000-01-17 |
| JP2000160555A JP2000160555A (en) | 2000-06-13 |
Family
ID=18354415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34252398A Expired - Lifetime JP2999190B1 (en) | 1998-12-02 | 1998-12-02 | Expansion type anchor member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2999190B1 (en) |
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| EP2801667A3 (en) * | 2013-05-07 | 2015-06-10 | Ing. Johann Hoertnagl-Werkzeuge GmbH | Ground anchor |
| CN103769787A (en) * | 2014-02-13 | 2014-05-07 | 保定天威集团特变电气有限公司 | Submerge-into-ground adjustable supporting method and device for welding top of oil tank of transformer |
| KR101456139B1 (en) * | 2014-07-25 | 2014-11-04 | 황태문 | Holder device of stud type connecting tool for strike gun |
| CN110397033A (en) * | 2019-07-26 | 2019-11-01 | 安徽理工大学 | It is a kind of at bolt tool and with the how horizontal bolt soil anchor prepared at bolt tool |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2000160555A (en) | 2000-06-13 |
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