JPS61250222A - Method and apparatus for connection of pile - Google Patents

Method and apparatus for connection of pile

Info

Publication number
JPS61250222A
JPS61250222A JP8965385A JP8965385A JPS61250222A JP S61250222 A JPS61250222 A JP S61250222A JP 8965385 A JP8965385 A JP 8965385A JP 8965385 A JP8965385 A JP 8965385A JP S61250222 A JPS61250222 A JP S61250222A
Authority
JP
Japan
Prior art keywords
pile
chuck
hole
piles
cylinder
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
Application number
JP8965385A
Other languages
Japanese (ja)
Other versions
JPH0371524B2 (en
Inventor
Morio Kitamura
精男 北村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giken Seisakusho Co Ltd
Original Assignee
Giken Seisakusho Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Giken Seisakusho Co Ltd filed Critical Giken Seisakusho Co Ltd
Priority to JP8965385A priority Critical patent/JPS61250222A/en
Publication of JPS61250222A publication Critical patent/JPS61250222A/en
Publication of JPH0371524B2 publication Critical patent/JPH0371524B2/ja
Granted legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/52Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
    • E02D5/523Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Abstract

PURPOSE:To raise the efficiency of operations by a method in which a connecting pile is held by the chuck of a penetrator and fitted with a coupler metal fixed to the upper end of a pile, and a hole is drilled in the pile and thrust with a connector to connect the pile with the coupler metal. CONSTITUTION:A press-fit pile 4 is driven into the ground by a chuck 4 and then penetrated when the upper end of the pile 5 reaches the upper end of an existing pile P. The chuck 4 is released from the pile 4 and raised, and a coupler metal 9 is attached to the upper end of the pile 5. A connecting pile 6 is held by the chuck 4 and lowered, the lower end of the pile 6 is fitted with the upper part of the metal 9, and a cylinder 41 is loosened to release the holding of the pile 6. The chuck 4 is then lowered, and a drawing cylinder 42 is lowered until it is matched with the pit of the metal 9. The cylinder 42 is operated, a rod 43 is extended to drill a hole in the pile 5, a caulking material 8 is penetrated into the hole, a caulking cylinder 44 is matched with the hole of the pile 5 and the hole of the metal 9, and the rod 45 is operated to clamp the material 8.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、鋼矢板等の鋼杭を継ぎ足しながら地中に打設
する際、打設した杭と新たに打設する杭(継ぎ杭)の間
に継手金具を取り付け、この金具を両杭に固定すること
により両杭の継ぎ足し作業を容易にする杭継ぎ足し方法
及び装置に関するものである。
[Detailed Description of the Invention] (Industrial Application Field) When driving steel piles such as steel sheet piles into the ground while adding them, the present invention is applicable to the previously driven piles and the newly driven piles (joint piles). The present invention relates to a method and apparatus for adding piles that facilitates the work of adding joints to both piles by attaching a joint fitting between the two piles and fixing the fitting to both piles.

(従来の技術) 鋼矢板等の鋼杭を地中に連続状に打設して、建築或いは
土木工事に利用している。平板状、溝形乃至Z形状の断
面を持つ杭を地中に打設するとき、建設の基礎となる岩
盤が深い場合、あるいは打設地点上部に障害物があり通
常の長さの杭が使用できない場合等は短尺の杭を継ぎ足
しながら所望の深さまで杭を打ち込む方法が利用されて
いる。
(Prior Art) Steel piles such as steel sheet piles are continuously driven into the ground and used for construction or civil engineering work. When driving piles with flat, groove-shaped, or Z-shaped cross sections into the ground, piles of normal length should be used if the bedrock serving as the foundation for construction is deep or there is an obstacle above the driving point. If this is not possible, a method is used in which short piles are added and the piles are driven to the desired depth.

従来の杭の継ぎ足し方法には、第5図に示されるように
、平板補強板10が用いられていた。この杭の継ぎ足し
方法は、打設した杭の上端に、予め一対の平板補強板1
0.10を溶接またはボルト締めで固定しておき、打設
した杭P1の平板補強板10に新たに継ぎ杭P2の下端
部分を挟着せしめ、平板補強板10と継ぎ杭P2と−を
溶接あるいはボルト締めをすることによって杭の継ぎ足
しを行っていた。
In the conventional method of adding piles, a flat reinforcing plate 10 was used, as shown in FIG. This method of adding piles involves placing a pair of flat reinforcing plates 1
0.10 is fixed by welding or bolting, and the lower end of the connecting pile P2 is newly clamped to the flat plate reinforcing plate 10 of the driven pile P1, and the flat plate reinforcing plate 10 and the connecting pile P2 and - are welded. Alternatively, piles were added by tightening bolts.

(発明が解決しようとする問題点) 上記のような従来の作業方法では、杭圧入作業の前に予
め杭の上端に2枚の補強板を固定する手間がかかる上、
溶接器材や作業員の確保が必要であった。更に、継ぎ杭
と補強板を固定する継ぎ足し作業を行うための足場を杭
に沿って設ける必要があるが、鉄道路線の盛土部の斜面
あるいは護岸工事における川の中への杭の打設のように
作業用の足場を確保する事が困難な場合もあった。
(Problems to be Solved by the Invention) In the conventional work method as described above, it takes time and effort to fix two reinforcing plates to the upper end of the pile before the pile press-fitting work, and
It was necessary to secure welding equipment and workers. Furthermore, it is necessary to install scaffolding along the piles to perform the work of fixing the joint piles and reinforcing plates, but this is difficult to do, such as when driving piles into the slope of an embankment on a railway line or into a river during bank protection work. In some cases, it was difficult to secure scaffolding for work.

(問題点を解決するための手段) 本発明は、上記実情に鑑みてなされたもので、打設した
杭の上端に別体の継手金具を固定し、この継手金具の上
部に継ぎ杭を圧入機のチャックに挾持させて嵌合した後
、前記チャック内に構成した打抜きシリンダによって杭
に孔を穿設し、その後該孔にかしめ材あるいはボルト等
の接続具を挿通し、この接続具を用いて両杭を継ぎ足す
方法とこの方法に使用する装置であり、杭の継ぎたし作
業の効率を向上させることを目的とする。
(Means for Solving the Problems) The present invention has been made in view of the above-mentioned circumstances, and consists of fixing a separate joint fitting to the upper end of the driven pile, and press-fitting the joint pile into the upper part of the joint fitting. After the pile is clamped and fitted in the chuck of the machine, a hole is bored in the pile using the punching cylinder configured in the chuck, and then a connecting tool such as caulking material or a bolt is inserted into the hole, and this connecting tool is used. The purpose is to improve the efficiency of the pile joining process.

(作用) 圧入杭の上端が、既設杭列の上端近傍に達した時点で、
一旦杭の圧入作業を中止する。次に、杭継手金具の下部
を前記打設した杭の上端に嵌着し、継ぎ杭を圧入引抜機
のチャックに押入して降下せしめ、該継ぎ杭の下端を上
記継手金具の上部に嵌着する。
(Operation) When the upper end of the press-in pile reaches the vicinity of the upper end of the existing pile row,
Temporarily stop the pile press-in work. Next, the lower part of the pile joint fitting is fitted onto the upper end of the above-mentioned driven pile, and the joint pile is pushed into the chuck of the press-in puller and lowered, and the lower end of the joint pile is fitted into the upper part of the above-mentioned joint metal fitting. do.

次に、チャックのみを両杭の継ぎ足し部分まで下げ、チ
ャックに内蔵した打抜きシリンダのロッド位置を穿孔位
置に合わせ、前記シンリンダで杭を貫通して穴あけを行
う。その後、前記穿孔位置に接続具を挿通し、かしめ手
段やボルト締めによって継手金具と杭を固定する。これ
を上下両杭についてそれぞれ行うことによって、両杭は
継ぎ足されて一体となる。以下、本発明の実施例を図面
に基づいて説明する。
Next, only the chuck is lowered to the joint between both piles, the rod position of the punching cylinder built into the chuck is aligned with the drilling position, and the cylinder is used to penetrate the piles and drill a hole. Thereafter, the connecting tool is inserted into the perforated position, and the joint fitting and the stake are fixed by caulking means or bolt tightening. By doing this for both the upper and lower piles, both piles are joined together and become a single piece. Embodiments of the present invention will be described below based on the drawings.

(実施例) 図面中、第1図は本発明に係る杭の継ぎ足し装置の一実
施例を示す正面図、第2図はチャック内のシリンダの作
用を説明した拡大断面図である。
(Embodiment) In the drawings, FIG. 1 is a front view showing an embodiment of the pile addition device according to the present invention, and FIG. 2 is an enlarged sectional view illustrating the action of the cylinder in the chuck.

1は圧入機本体で、本実施例では圧入機本体1はクラン
プ3.3・・によって既設杭P、P・・の上部に自立し
ているが、乙の実施例に限らず、地上に固定式のものや
無軌道車に載置されたものでもよい。圧入機本体1のマ
スト2の前方には杭を挾持して地中に圧入するチャック
4がマスト2に対して昇降自在に構成されている。
1 is the press-in machine main body, and in this embodiment, the press-in machine main body 1 is supported on the top of the existing piles P, P, etc. by clamps 3, 3, etc., but not limited to the embodiment B, it can be fixed on the ground. It may be a type of vehicle or one mounted on a trackless vehicle. In front of the mast 2 of the press-fitting machine main body 1, a chuck 4 that clamps a pile and press-fits it into the ground is configured to be movable up and down with respect to the mast 2.

このチャック4には杭挾持用シリンダ41と打抜きシリ
ンダ42及びかしめシリンダ44が内蔵されている。杭
挾持用シリンダ41は杭を挾持して下降ないしは上昇せ
しめるものである。
This chuck 4 includes a pile holding cylinder 41, a punching cylinder 42, and a caulking cylinder 44. The pile holding cylinder 41 is for holding a pile and moving it down or up.

打抜きシリンダ42は4個構成し、そのロッド43をチ
ャック4の内側に向けて進退自由に設けてなる。とのロ
ッド43は先端に形成した刃部で杭を打ち抜く。
There are four punching cylinders 42, each of which has a rod 43 that is freely movable toward the inside of the chuck 4. The rod 43 punches out the pile with a blade portion formed at the tip.

この打ち抜きシリンダ42の下方に並列的に構成された
かしめシリンダ44は、4個のシリンダからなり、夫々
のロッド45の先端には、前面に凹部を形成した抑圧部
46を取り付け、ロッド45の前進により、前記杭に穿
設した孔と後述の継手金具9の孔94を挿通したかしめ
材8をかしめる。また、この場合はチャック4内の受部
4aに凹部4bを構成してお(。
The caulking cylinders 44 arranged in parallel below the punched cylinders 42 are made up of four cylinders, and each rod 45 has a suppressing part 46 having a concave portion formed in its front end attached to the tip of each rod 45 to prevent the rod 45 from moving forward. By doing this, the caulking material 8 inserted through the hole drilled in the pile and the hole 94 of the joint fitting 9, which will be described later, is caulked. Moreover, in this case, a recess 4b is formed in the receiving part 4a in the chuck 4 (.

また、継手金具9と杭の接合方法は作業条件の許す場合
は、人手によるかしめ或いはボルト締めでもよいため、
この場合はチャック4内にかしめシリンダ44は構成し
なくてもよい。
In addition, the joint fitting 9 and the pile may be joined by manual caulking or bolt tightening if work conditions permit.
In this case, the caulking cylinder 44 does not need to be provided within the chuck 4.

このように、打抜きシリンダ42とかしめシリンダ44
の構成位置は継手金具9の孔94の位置と整合しなけれ
ばならない。
In this way, the punching cylinder 42 and the caulking cylinder 44
The configuration position of must match the position of the hole 94 of the joint fitting 9.

継手金具9は、第4図に示すように内側板91、外側板
92と、この両側板を連結する連結部93によって構成
されている。
As shown in FIG. 4, the joint fitting 9 is composed of an inner plate 91, an outer plate 92, and a connecting portion 93 that connects the both side plates.

内側板91は杭の腹側に密接するようにコ字状に曲折し
てなる。外側板92は前記内側板91と同形状であり、
杭の背側に密接するようになっている。連結部93は、
内側板91と外側板92によって画される間隙Sを一定
に保ちつつ、継手金具9の中央部付近において、両側板
91.92を連結する。
The inner plate 91 is bent into a U-shape so as to be in close contact with the ventral side of the pile. The outer plate 92 has the same shape as the inner plate 91,
It is arranged in close contact with the dorsal side of the pile. The connecting portion 93 is
Both side plates 91 and 92 are connected near the center of the joint fitting 9 while keeping the gap S defined by the inner plate 91 and the outer plate 92 constant.

内側板91と外側板92には夫々4個の孔94が2列穿
設されている。この孔はかしめ材8の必要数によって決
定されるので、使用状況によって増減され、配置の仕方
も第4図に示される4個・2列としてもよく、あるいは
4列等としても構わない。また、孔94の配置場所につ
いては本実施例のように、杭のフランジ部にも設けるこ
とが強度的に効果的で、かしめ材の数を少なく構成でき
、従来の平板補強板による場合に比しても、杭の揺れや
振動に対して強い。
Two rows of four holes 94 are bored in each of the inner plate 91 and the outer plate 92. Since the number of holes is determined by the required number of caulking materials 8, the number of holes may be increased or decreased depending on usage conditions, and the arrangement may be four holes in two rows as shown in FIG. 4, or four rows. In addition, regarding the location of the holes 94, it is effective for strength to provide them at the flange of the pile as in this embodiment, and the number of caulking materials can be reduced, compared to the case of using a conventional flat reinforcing plate. It is resistant to shaking and vibration of the pile.

この孔94は、本実施例では継手金具9に予め設けたが
、予め設けずに、シリンダ42で杭に孔を穿設するとき
に同時に継手金具9に孔94を穿設するようにしてもよ
い。
Although this hole 94 is provided in advance in the joint fitting 9 in this embodiment, it is also possible to make the hole 94 in the joint fitting 9 at the same time as drilling a hole in the pile with the cylinder 42 without providing it in advance. good.

次に本実施例の作用を説明すると、まずチャック4で圧
入杭5を地中に打設し、この圧入杭5の上端が既設杭P
、P・・の上端近傍まできたら圧入を一旦中止し、チャ
ック4を圧入杭5よゆ解放して上昇させ、別途用意した
継手金具9を圧入杭5の上端に装着する。そして新しい
杭、つまり継ぎ杭6をチャック4に挾持して下降せしめ
、下端を継手金具9の上部に嵌合せしめる。この場合、
継手金具9の両側板91.92の形状が杭5.6の表面
形状に略々等しく、また間隙Sが杭5.6の幅に略々等
しいため、継手金具9は杭5.6に密着して嵌合する。
Next, to explain the operation of this embodiment, first, a press-fit pile 5 is driven into the ground using the chuck 4, and the upper end of this press-fit pile 5 is connected to the existing pile P.
, P..., the press-fitting is temporarily stopped, the chuck 4 is released from the press-fit pile 5 and raised, and a separately prepared joint fitting 9 is attached to the upper end of the press-fit pile 5. Then, the new pile, that is, the joint pile 6, is held by the chuck 4 and lowered, and the lower end is fitted into the upper part of the joint fitting 9. in this case,
Since the shape of the side plates 91.92 of the joint fitting 9 is approximately equal to the surface shape of the pile 5.6, and the gap S is approximately equal to the width of the pile 5.6, the joint fitting 9 is tightly attached to the pile 5.6. and then mate.

その後、チャック4の杭挾持用シリンダ41をゆるめ継
ぎ杭6の挾持状態を解いて、チャック4のみ下降させチ
ャック4の打抜きシリンダ42を、圧入杭5の上端の継
手金具9の孔94に合致する位置まで下降する。
Thereafter, the pile holding cylinder 41 of the chuck 4 is loosened to release the joint pile 6 from holding it, and only the chuck 4 is lowered to align the punched cylinder 42 of the chuck 4 with the hole 94 of the joint fitting 9 at the upper end of the press-fit pile 5. descend to the position.

そして、打抜きシリンダ42を油圧ポンプ(図示せず)
等で作動させロッド43を進出させ圧入杭5に孔を穿設
する。その後チャック4を上昇させ、かしめ材8を両孔
内に挿通し、かしめシリンダ44を継手金具9の孔94
と打抜きシリンダ42で穿設した圧入杭5の孔に合致さ
せ、ロッド45を作動させてかしめ材8をかしめて継手
金具9を圧入杭5に固定する。継手金具9と継ぎ抗6も
同様の方法で固定する。このようにして両杭5.6を継
ぎ足して正大作業を継続する。
Then, the punching cylinder 42 is connected to a hydraulic pump (not shown).
etc. to advance the rod 43 and drill a hole in the press-fit pile 5. After that, the chuck 4 is raised, the caulking material 8 is inserted into both holes, and the caulking cylinder 44 is inserted into the hole 94 of the joint fitting 9.
The joint fitting 9 is fixed to the press-fit pile 5 by aligning it with the hole of the press-fit pile 5 drilled by the punching cylinder 42, and by actuating the rod 45, the caulking material 8 is caulked. The joint fittings 9 and the joint resistance 6 are also fixed in the same manner. In this way, both piles 5 and 6 are added and the main work is continued.

(効果) 以上説明したように、本発明によれば地中に打設きれた
杭の端部に外部からの支持を要せずに容易迅速に杭の継
ぎ足し作業が行え、杭の継ぎ足し作業のための足場の確
保、あるいはそれらの作業に従事する人手を削減するこ
とができるため、安全で効率のよい杭の打設作業が可能
となる。
(Effects) As explained above, according to the present invention, it is possible to easily and quickly add piles to the ends of piles that have been driven into the ground without requiring external support. This enables safe and efficient pile driving work, as it is possible to secure scaffolding for the piles, and to reduce the number of people involved in such work.

【図面の簡単な説明】 図面は本発明の実施例を示すもので、第1図は装置の正
面図、第2図はチャック内のシリンダの作用を説明した
図で、(a)は打ち抜きシリンダをあられす拡大断面図
、(b)はかしめシリンダをあられす拡大断面図、(C
)は両シリンダと受部との関係をあられす拡大断面図、
第3図はかしめによって両杭を継ぎ足した状態を示す図
で、(Jl)は平面図、(b)は正面図、((+)は側
面断面図、第4図は従来の杭継ぎ足し方法を説明するも
ので、(a)はボルト締めによった場合の側面図、(b
)は同正面図、(c)は溶接によった場合の側面図、c
d)は同正面図である。 1・・・圧入機  4・・・チャック 5・・・圧入杭  6・・・継ぎ杭 8・・・かしめ材 9・・・継手金具 42・・・打抜きシリンダ 44・・・かしめシリンダ 代理人 弁理士 1)中 二 部 第1図 P          p 曜毀肩。 第2図 (a) (b)        (C) 第3図 久 (b)           (c) 第4図 (b) <d) 5図 (a) (C)
[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show an embodiment of the present invention. Figure 1 is a front view of the device, Figure 2 is a diagram explaining the action of the cylinder in the chuck, and (a) shows the punching cylinder. (b) is an enlarged sectional view showing the caulking cylinder, (C
) is an enlarged sectional view showing the relationship between both cylinders and the receiving part,
Figure 3 shows the state in which both piles are joined by caulking, where (Jl) is a plan view, (b) is a front view, ((+) is a side sectional view, and Figure 4 shows the conventional pile joining method. (a) is a side view when bolted, (b)
) is a front view of the same, (c) is a side view when welded, c
d) is a front view of the same. 1...Press-in machine 4...Chuck 5...Press-in pile 6...Join pile 8...Caulking material 9...Joint fitting 42...Punching cylinder 44...Caulking cylinder agent Patent attorney Master 1) Junior High School 2nd Division Figure 1 P p Yo-Kanshi. Figure 2 (a) (b) (C) Figure 3 Hisashi (b) (c) Figure 4 (b) <d) Figure 5 (a) (C)

Claims (3)

【特許請求の範囲】[Claims] (1)地中に打設した杭の上端に、継手金具を固定し、
この継手金具の上部に継ぎ杭を圧入機のチャックに挾持
させて嵌合した後、前記チャック内に構成した打抜き手
段によって杭に孔を穿設し、その後該孔に接続具を挿通
して杭と継手金具を接続することにより杭を継ぎ足す方
法。
(1) Fix the fitting to the top of the pile driven underground,
After fitting the connecting pile to the upper part of the joint fitting by holding it in the chuck of a press-fitting machine, a hole is bored in the pile by the punching means configured in the chuck, and then a connecting tool is inserted into the hole to make the pile. A method of adding piles by connecting them with joint fittings.
(2)圧入機のチャック内部に杭に孔を穿設するための
打抜き手段を構成したことを特徴とする杭の継ぎ足し装
置。
(2) A pile adding device characterized in that a punching means for drilling holes in the pile is configured inside the chuck of a press-fitting machine.
(3)チャック内にかしめ手段を構成したことを特徴と
する特許請求の範囲第2項記載の杭の継ぎ足し装置。
(3) The pile addition device according to claim 2, characterized in that a caulking means is provided within the chuck.
JP8965385A 1985-04-25 1985-04-25 Method and apparatus for connection of pile Granted JPS61250222A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8965385A JPS61250222A (en) 1985-04-25 1985-04-25 Method and apparatus for connection of pile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8965385A JPS61250222A (en) 1985-04-25 1985-04-25 Method and apparatus for connection of pile

Publications (2)

Publication Number Publication Date
JPS61250222A true JPS61250222A (en) 1986-11-07
JPH0371524B2 JPH0371524B2 (en) 1991-11-13

Family

ID=13976719

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8965385A Granted JPS61250222A (en) 1985-04-25 1985-04-25 Method and apparatus for connection of pile

Country Status (1)

Country Link
JP (1) JPS61250222A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102433877A (en) * 2012-01-09 2012-05-02 福建工程学院 Quick connector for pile tubes
CN102808412A (en) * 2012-08-27 2012-12-05 中淳高科桩业股份有限公司 Embedded construction prefabricated pile following device and pile following method
CN103882863A (en) * 2014-03-04 2014-06-25 姚瑜 Tubular pile end-plate-free and pulling resistant functional assembly
JP2017198044A (en) * 2016-04-28 2017-11-02 株式会社技研製作所 Connection method of pile constituting member and pile construction machine
JP2018003362A (en) * 2016-06-29 2018-01-11 株式会社技研製作所 Joint method for pile constituent member, construction method of pile body, press-in driver, and claw member

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102433877A (en) * 2012-01-09 2012-05-02 福建工程学院 Quick connector for pile tubes
CN102808412A (en) * 2012-08-27 2012-12-05 中淳高科桩业股份有限公司 Embedded construction prefabricated pile following device and pile following method
CN103882863A (en) * 2014-03-04 2014-06-25 姚瑜 Tubular pile end-plate-free and pulling resistant functional assembly
JP2017198044A (en) * 2016-04-28 2017-11-02 株式会社技研製作所 Connection method of pile constituting member and pile construction machine
JP2018003362A (en) * 2016-06-29 2018-01-11 株式会社技研製作所 Joint method for pile constituent member, construction method of pile body, press-in driver, and claw member

Also Published As

Publication number Publication date
JPH0371524B2 (en) 1991-11-13

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