JP2007154421A

JP2007154421A - Pile hanging device

Info

Publication number: JP2007154421A
Application number: JP2005347095A
Authority: JP
Inventors: Masami Tominaga; 政己冨永
Original assignee: Nippon Concrete Industries Co Ltd
Current assignee: Nippon Concrete Industries Co Ltd
Priority date: 2005-11-30
Filing date: 2005-11-30
Publication date: 2007-06-21

Abstract

PROBLEM TO BE SOLVED: To provide a pile hanging device capable of coping with a connection structure common to each manufacturer and usable in common to a lower pile and connecting piles sequentially connected onto the lower pile, to improve working efficiency. SOLUTION: A stopper ring 21 comprising a plurality of circular arc shaped divided bodies has a ring body part 27 and a lower side support part 28 for supporting the lower face of a flange part 13 of the lower pile 2 or connecting pile 9. A stepped part 22A provided at an annular pile hanging member 22 with a connecting pile hanging part 23 is engaged with the lower face of the stopper ring 21. Further, an annular lower pile tool 25 having a lower pile hanging part 26 is connected to the lower side of the annular pile hanging member 22, and a wire rope or the like is fastened to the connecting pile hanging part 23 or the lower pile hanging part 26 to hang the connecting pile 9 or the lower pile 2. COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、コンクリート製杭又は鋼管製杭などの既製基礎杭を吊る際に使用される杭吊込み装置に関するものであり、特に、下杭又は継ぎ杭をクレーン等で吊る際に使用される杭吊込み装置に関するものである。 The present invention relates to a pile lifting device used when hanging a ready-made foundation pile such as a concrete pile or a steel pipe pile, and in particular, a pile used when hanging a lower pile or a joint pile with a crane or the like. The present invention relates to a lifting device.

従来、土木基礎工事において、ＰＣ杭、ＳＣ杭、ＲＣ杭等の各種既製杭を所定の位置に沈設する工法として、プリボーリング工法、打ち込み工法、中堀り工法等が主として用いられている。何れの工法においても、既製杭をクレーンにより吊り込む必要がある。そこで、既製基礎杭、例えばコンクリート杭を吊る手段とし、従来では、複数本のワイヤーロープを、直接杭の上端部外周に複数回巻き付け、該ワイヤーロープをクレーン側のフックに引っ掛けて吊る方法が最も一般的に行われてきた。 Conventionally, in civil engineering foundation work, pre-boring method, driving-in method, medium-drilling method, etc. are mainly used as methods for laying various pre-made piles such as PC piles, SC piles, RC piles, etc. at predetermined positions. In any construction method, it is necessary to hang a ready-made pile by a crane. Therefore, as a means for suspending ready-made foundation piles, for example, concrete piles, the most conventional method is to wrap multiple wire ropes directly around the outer periphery of the upper end of the pile multiple times and hang the wire ropes on the crane side hooks. It has been done in general.

しかしながら、上記の吊り方では、既製杭を吊ったときに、非常に不安定で、かつ、安全性に難があり、吊り込み作業を効率的に行えない難点があった。そこで、杭を安全に吊り込み得る構造にした杭の吊り装置も既に提案されている（例えば、特許文献１参照）。 However, in the above-described suspension method, when a ready-made pile is suspended, there is a problem that it is very unstable and has difficulty in safety, and the suspension operation cannot be performed efficiently. Therefore, a pile suspending device having a structure capable of safely suspending the pile has already been proposed (see, for example, Patent Document 1).

また、従来では、異なるメーカの既製杭が混用されることが多かった。そのため、杭の吊り装置も、各メーカに対応させたものを複数用意しておく必要があったが、近年では、各メーカ共通の仕様で作られたフランジ部を、杭の一端部に取り付けて結合する構造が使用されるようになって来ている。
特開２００３−１６６２４１号公報。 Conventionally, off-the-shelf piles from different manufacturers are often used together. Therefore, it was necessary to prepare a number of pile suspension devices corresponding to each manufacturer, but in recent years, a flange made with specifications common to each manufacturer is attached to one end of the pile. Bonding structures are being used.
JP2003-166241A.

しかしながら、現在、各メーカ共通の連結構造に対応した杭吊込み装置、あるいは、下杭と該下杭上に順次連結される継ぎ杭とのいずれにも使用できる杭吊込み装置は存在していない。 However, there is currently no pile lifting device that can be used for either the pile hanging device corresponding to the connection structure common to each manufacturer, or the lower pile and the joint pile sequentially connected to the lower pile. .

そこで、各メーカ共通の基礎杭の連結構造に容易に対応でき、かつ、下杭と継ぎ杭とのいずれにも使用できる杭吊込み装置を得るために解決すべき技術的課題が生じてくるのであり、本発明はこの課題を解決することを目的とする。 Therefore, there is a technical problem to be solved in order to obtain a pile lifting device that can easily cope with the foundation pile connection structure common to each manufacturer and can be used for both the lower pile and the joint pile. The present invention aims to solve this problem.

本発明は上記目的を達成するために提案されたものであり、請求項１記載の発明は、地盤に最初に打設される下杭に連結される継ぎ杭端部に配設されている端板であって、該端板は外側面に、内方へ向かって周溝が形成され、且つ、該周溝の上面にフランジ部が突設され、該フランジ部の下面に係合する段差部を有するストッパーリングを、該段差部を介して該フランジ部下面に当接させ、更に、該ストッパーリングの下面に係合する段設部を有する環状杭吊部材を、該段設部を介して前記ストッパーリングの下面に当接させ、且つ、環状杭吊部材に継ぎ杭吊部を設け、該継ぎ杭吊部にワイヤーロープ等を引っ掛けて継ぎ杭を吊り込むことができるように構成された杭吊込み装置を提供する。 The present invention has been proposed in order to achieve the above-mentioned object, and the invention according to claim 1 is an end disposed at an end of a joint pile connected to a lower pile that is first placed on the ground. The end plate is formed with a circumferential groove on the outer surface, and a flange portion projects from the upper surface of the circumferential groove and engages with the lower surface of the flange portion. An annular pile suspension member having a stepped portion that is brought into contact with the lower surface of the flange portion through the stepped portion and further engaged with the lower surface of the stopper ring is provided through the stepped portion. A pile configured to abut on the lower surface of the stopper ring, and to provide a joint pile suspension portion on the annular pile suspension member, and to hang the joint pile by hooking a wire rope or the like on the joint pile suspension portion. A hoisting device is provided.

この構成によれば、継ぎ杭のフランジ部の下面に係合する段差部を有するストッパーリングと、該ストッパーリングの下面に係合する段設部を有する環状杭吊部材とを備えるので、継ぎ杭に対して杭吊込み装置を確実かつ容易に着脱させることができる。いま、本発明の杭吊込み装置を用いて継ぎ杭（上杭、中杭）を吊り込むときは、前記フランジ部下面にストッパーリングの段差部を当接係合させて、ストッパーリングを取り付けると共に、環状杭吊部材の段設部をストッパーリングの下面の外側に係合させて、環状杭吊部材を取り付ける。 According to this configuration, since the stopper ring having the stepped portion engaged with the lower surface of the flange portion of the joint pile and the annular pile hanging member having the stepped portion engaged with the lower surface of the stopper ring are provided, the joint pile On the other hand, the pile hoisting device can be attached and detached reliably and easily. Now, when hanging a joint pile (upper pile, middle pile) using the pile hoisting device of the present invention, the stepped portion of the stopper ring is brought into contact with and engaged with the lower surface of the flange portion, and the stopper ring is attached. The annular pile suspension member is attached by engaging the stepped portion of the annular pile suspension member with the outside of the lower surface of the stopper ring.

この場合、前記ストッパーリングは、フランジ部下面に係脱可能に係合する段差部を有するので、ストッパーリングの着脱を簡単に行える。更に、該ストッパーリングの下面に環状杭吊部材の段設部を係合させると、ストッパーリングの外周部は環状杭吊部材によって囲まれるので、ストッパーリングが開くことはない。 In this case, the stopper ring has a stepped portion that is detachably engaged with the lower surface of the flange portion, so that the stopper ring can be easily attached and detached. Furthermore, when the stepped portion of the annular pile suspension member is engaged with the lower surface of the stopper ring, the outer periphery of the stopper ring is surrounded by the annular pile suspension member, so that the stopper ring does not open.

環状杭吊部材のストッパーリングへの係脱は、環状杭吊部材を杭軸方向へスライドさせるのみで容易に行える。更に、環状杭吊部材には継ぎ杭吊部が設けられているので、継ぎ杭吊部にワイヤーロープ等を引っ掛けて上げると、継ぎ杭が垂直かつ容易に吊り上げられる。 Engagement / disengagement of the annular pile suspension member to the stopper ring can be easily performed only by sliding the annular pile suspension member in the pile axial direction. Further, since the joint pile suspension portion is provided in the annular pile suspension member, when the wire rope or the like is hooked and raised on the joint pile suspension portion, the joint pile is lifted vertically and easily.

また、本発明の杭吊込み装置は、ストッパーリング及び環状杭吊部材を介して継ぎ杭のフランジ部外周に係合固定されるので、継ぎ杭に杭吊込み装置が確実かつ安定的に連結保持される。従って、継ぎ杭の吊り上げ時または吊り下げ時に、杭吊込み装置が継ぎ杭から外れることはない。 In addition, since the pile suspension device of the present invention is engaged and fixed to the outer periphery of the flange portion of the joint pile via the stopper ring and the annular pile suspension member, the pile suspension device is securely and stably connected and held to the joint pile. Is done. Therefore, the pile lifting device does not come off from the joint pile when the joint pile is lifted or suspended.

請求項２記載の発明は、地盤に最初に打設される下杭端部に配設されている端板であって、該端板は外側面に、内方へ向かって周溝が形成され、且つ、該周溝の上面にフランジ部が突設され、該フランジ部の下面に係合する段差部を有するストッパーリングを、該段差部を介して該フランジ部下面に当接させ、更に、該ストッパーリングの下面に係合する段設部を有する環状杭吊部材を、該段設部を介して前記ストッパーリングの下面に当接させ、該環状杭吊部材の下側に、下杭吊部を有する環状下杭治具を連設し、該下杭吊部にワイヤーロープ等を引っ掛けて下杭を吊り込むことができるように構成された杭吊込み装置を提供する。 The invention according to claim 2 is an end plate disposed at the end of the lower pile that is first placed on the ground, and the end plate has a circumferential groove formed on the outer surface inward. And, a flange portion protrudes from the upper surface of the circumferential groove, and a stopper ring having a step portion engaged with the lower surface of the flange portion is brought into contact with the lower surface of the flange portion through the step portion, An annular pile suspension member having a stepped portion that engages with the lower surface of the stopper ring is brought into contact with the lower surface of the stopper ring via the stepped portion, and a lower pile suspension is placed below the annular pile suspension member. Provided is a pile lifting device configured such that an annular lower pile jig having a portion is continuously provided and a lower rope can be suspended by hooking a wire rope or the like on the lower pile hanging portion.

この構成によれば、この杭吊込み装置を用いて下杭を吊り込む場合は、フランジ部下面にストッパーリングの段差部を係合させると共に、該ストッパーリングの下面の外周に、環状杭吊部材の段設部を係合させて、環状杭吊部材を取り付ける。ここで、環状杭吊部材の下側に連設した環状下杭治具には、下杭吊部が設けられているので、該下杭吊部にワイヤーロープを引っ掛けてクレーン等で吊り上げると、下杭が斜めに容易に吊り上げられる。 According to this configuration, when the lower pile is suspended using this pile hanging device, the stepped portion of the stopper ring is engaged with the lower surface of the flange portion, and the annular pile hanging member is disposed on the outer periphery of the lower surface of the stopper ring. An annular pile suspension member is attached by engaging the stepped portion. Here, since the lower pile hanging portion is provided in the annular lower pile jig continuously provided on the lower side of the annular pile hanging member, when a wire rope is hooked on the lower pile hanging portion and lifted by a crane or the like, The lower pile can be easily lifted diagonally.

前記ストッパーリング及び環状杭吊部材は、請求項１記載の発明と同様の構成であるので、ストッパーリングの着脱が簡単になり、環状杭吊部材で囲まれたストッパーリングが不意に開く恐れはない。また、環状杭吊部材を杭軸方向へスライドさせるのみで、ストッパーリングに容易に係脱できる。 Since the stopper ring and the annular pile suspension member have the same configuration as that of the first aspect of the invention, the stopper ring can be easily attached and detached, and the stopper ring surrounded by the annular pile suspension member is not likely to open unexpectedly. . Moreover, it can be easily engaged with and disengaged from the stopper ring only by sliding the annular pile suspension member in the pile axis direction.

この杭吊込み装置は、ストッパーリング及び環状杭吊部材を介して下杭のフランジ部外周に係合固定されるので、下杭に確実かつ安定的に連結保持され、下杭の吊込み時に、下杭から杭吊込み装置が外れることはない。 Since this pile hanging device is engaged and fixed to the outer periphery of the flange portion of the lower pile via the stopper ring and the annular pile hanging member, it is securely and stably connected and held to the lower pile, and when the lower pile is suspended, The pile lifting device will not come off from the lower pile.

請求項３記載の発明は、請求項１又は２において、前記環状杭吊部材が締結部材により上記継ぎ杭又は上記下杭に固定されている杭吊込み装置を提供する。 Invention of Claim 3 provides the pile suspension apparatus in which the said cyclic | annular pile suspension member is being fixed to the said joint pile or the said lower pile by the fastening member in Claim 1 or 2.

この構成によれば、締結部材が、環状杭吊部材を継ぎ杭又は下杭に固定する役割を果たすので、環状杭吊部材とストッパーリングとの装着状態が安定化して常に良好に保たれる。尚、継ぎ杭又は下杭を吊り上げてしまえば、環状杭吊部材が杭軸方向下方にスライドすることがない。 According to this structure, since a fastening member plays the role which fixes an annular pile suspension member to a joint pile or a lower pile, the mounting state of an annular pile suspension member and a stopper ring is stabilized, and is always kept favorable. In addition, if the joint pile or the lower pile is lifted, the annular pile suspension member does not slide downward in the pile axial direction.

請求項４記載の発明は、請求項１，２又は３において、上記ストッパーリングは、複数の円弧状分割体を互いに回動可能に連結して成り、且つ、上記継ぎ杭又は下杭のフランジ部に着脱自在に取り付けられるように構成した杭吊込み装置を提供する。 According to a fourth aspect of the present invention, in the first, second, or third aspect, the stopper ring is formed by connecting a plurality of arcuate segments so as to be rotatable with each other, and the flange portion of the joint pile or the lower pile A pile suspending device configured to be detachably attached to the slab is provided.

この構成によれば、隣接する複数の分割体同士を回動可能にリンク連結することにより、構造が簡単な開閉式のストッパーリングが得られる。従って、ストッパーリングを開いた状態にして、ストッパーリングを継ぎ杭又は下杭のフランジ部の周囲に配置した後、ストッパーリングを閉じると、ストッパーリングがフランジ部に容易に取り付けられる。 According to this configuration, an open / close type stopper ring having a simple structure can be obtained by link-connecting a plurality of adjacent divided bodies so as to be rotatable. Therefore, when the stopper ring is opened and the stopper ring is disposed around the flange portion of the joint pile or the lower pile and then the stopper ring is closed, the stopper ring is easily attached to the flange portion.

請求項５記載の発明は、請求項１，２，３又は４において、上記ストッパーリングの内周部上側には、上記継ぎ杭又は下杭のフランジ部上面と対向する突起部が形成されていると共に、該突起部に、前記フランジ部上面に当接する止着部材が設けられている杭吊込み装置を提供する。 According to a fifth aspect of the present invention, in the first, second, third, or fourth aspect, a protruding portion that is opposed to the upper surface of the flange portion of the joint pile or the lower pile is formed on the inner periphery of the stopper ring. In addition, there is provided a pile hoisting device in which a fixing member that contacts the upper surface of the flange portion is provided on the protrusion.

この構成によれば、ストッパーリングの内周部の突起部に、フランジ部上面に押圧当接する止着部材が設けられているので、この止着部材の圧接力により、ストッパーリングがフランジ部に対して隙間のない安定した状態に取り付けられる。 According to this configuration, since the fastening member that presses and contacts the upper surface of the flange portion is provided on the protrusion on the inner peripheral portion of the stopper ring, the stopper ring is brought into contact with the flange portion by the pressing force of the fastening member. It can be installed in a stable state with no gaps.

請求項１記載の発明は、ストッパーリングの着脱および環状杭吊部材の係脱が簡単になり、杭吊込み装置を継ぎ杭に確実・容易に着脱できる。また、環状杭吊部材はストッパーリングの外周部を包囲して保持するので、ストッパーリングが開くことはない。加えて、環状杭吊部材を杭軸方向へスライドさせるだけで、環状杭吊部材をストッパーリングに対して容易に係合離脱させることができる。 The invention according to claim 1 makes it easy to attach and detach the stopper ring and engage and disengage the annular pile suspension member, and the pile suspension device can be attached to and detached from the joint pile reliably and easily. Further, since the annular pile suspension member surrounds and holds the outer peripheral portion of the stopper ring, the stopper ring does not open. In addition, the annular pile suspension member can be easily engaged with and disengaged from the stopper ring only by sliding the annular pile suspension member in the pile axis direction.

更に、継ぎ杭吊部にワイヤーロープ等を引っ掛けて上げると、継ぎ杭が垂直かつ容易に吊り上げられる。また、継ぎ杭に杭吊込み装置が確実かつ安定的に連結保持され、継ぎ杭の吊り込み時に、杭吊込み装置が継ぎ杭から外れることはなく、杭吊り込み作業の施工効率が著しく向上する。 Furthermore, when a wire rope or the like is hooked and raised on the joint pile hanging portion, the joint pile is lifted vertically and easily. In addition, the pile lifting device is securely and stably connected to the joint pile, and when the joint pile is suspended, the pile lifting device will not be detached from the joint pile, and the construction efficiency of the pile lifting work is significantly improved. .

請求項２記載の発明は、下杭を吊り込む際、請求項１記載の発明と同等の効果、即ち、ストッパーリングの着脱および環状杭吊部材の係脱が簡単になり、杭吊込み装置を下杭に確実・容易に着脱できる。また、環状杭吊部材はストッパーリングの外周部を包囲して保持するので、ストッパーリングが開くことはない。加えて、環状杭吊部材を杭軸方向へスライドさせるだけで、環状杭吊部材をストッパーリングに対して容易に係合離脱させることができる。 According to the second aspect of the present invention, when the lower pile is suspended, the same effect as that of the first aspect of the invention, that is, the attachment / detachment of the stopper ring and the engagement / disengagement of the annular pile suspension member can be simplified. It can be attached to and removed from the pile reliably and easily. Further, since the annular pile suspension member surrounds and holds the outer peripheral portion of the stopper ring, the stopper ring does not open. In addition, the annular pile suspension member can be easily engaged with and disengaged from the stopper ring only by sliding the annular pile suspension member in the pile axis direction.

更に、下杭吊部にワイヤーロープ等を引っ掛けて上げると、下杭が斜めかつ容易に吊り上げられる。また、下杭に杭吊込み装置が確実かつ安定的に連結保持され、下杭の吊り込み時に、杭吊込み装置が下杭から外れることはなく、杭吊り込み作業の施工効率が著しく向上する。 Furthermore, if a wire rope etc. are hooked and raised to a lower pile suspension part, a lower pile will be lifted diagonally and easily. In addition, the pile lifting device is securely and stably connected to the lower pile, and when the lower pile is suspended, the pile lifting device does not come off from the lower pile, and the construction efficiency of the pile lifting work is significantly improved. .

請求項３記載の発明は、締結部材が、環状杭吊部材を継ぎ杭又は下杭に固定する役割を果たすので、請求項１又は２記載の発明の効果に加えて、構成が簡単でありながら、環状杭吊部材とストッパーリングとの装着状態を常に安定して保持することができる。尚、継ぎ杭又は下杭を吊り上げた後は、環状杭吊部材が杭軸方向下方にスライドすることがない。 In the invention described in claim 3, since the fastening member plays a role of fixing the annular pile suspension member to the joint pile or the lower pile, in addition to the effect of the invention described in claim 1 or 2, the configuration is simple. The mounting state of the annular pile suspension member and the stopper ring can always be stably maintained. In addition, after lifting the joint pile or the lower pile, the annular pile suspension member does not slide downward in the pile axial direction.

請求項４記載の発明は、ストッパーリングは、複数の円弧状分割体を互いに回動可能に連結したので、フランジ部に対して簡単に着脱することができ、請求項１，２または３記載の発明の効果に加えて、ストッパーリングをフランジ部に脱着する際の作業性が著しく向上する。 In the invention according to claim 4, the stopper ring is configured such that the plurality of arc-shaped divided bodies are connected to each other so as to be rotatable, and therefore can be easily attached to and detached from the flange portion. In addition to the effects of the invention, the workability when the stopper ring is attached to and detached from the flange portion is significantly improved.

請求項５記載の発明は、止着部材の圧接力により、ストッパーリングがフランジ部に押圧当接されるので、請求項１，２，３又は４記載の発明の効果に加えて、ストッパーリングが開くことなく、フランジ部に対して隙間のない安定した取り付け状態でストッパーリングを保持することができる。 In the invention according to claim 5, since the stopper ring is pressed and brought into contact with the flange portion by the pressing force of the fastening member, in addition to the effect of the invention according to claim 1, 2, 3 or 4, Without opening, the stopper ring can be held in a stable mounting state without a gap with respect to the flange portion.

本発明は、各メーカ共通の杭の連結構造に対応でき、かつ、下杭と該下杭上に順次連結される継ぎ杭とに共通に使用できる簡単な構造の杭吊込み装置を得るという目的を、地盤に最初に打設される下杭又は継ぎ杭の端部に配設されている端板であって、該端板は外側面に、内方へ向かって周溝が形成され、且つ、該周溝の上面にフランジ部が突設され、該フランジ部の下面に係合する段差部を有するストッパーリングを、該段差部を介して該フランジ部下面に当接させ、該ストッパーリングの下面に係合する段設部を有する環状杭吊部材を、該段設部を介して前記ストッパーリングの下面に当接させ、且つ、環状杭吊部材に継ぎ杭吊部を設けたことにより実現した。 It is an object of the present invention to provide a pile lifting device having a simple structure that can be used for a pile connection structure common to each manufacturer and can be commonly used for a lower pile and a joint pile sequentially connected on the lower pile. Is an end plate disposed at an end of a lower pile or a joint pile that is first placed on the ground, and the end plate has a circumferential groove formed on an outer surface thereof inwardly; and A stopper ring having a flange portion projecting from the upper surface of the circumferential groove and having a stepped portion engaged with the lower surface of the flange portion is brought into contact with the lower surface of the flange portion through the stepped portion. Annular pile suspension member having a stepped portion that engages with the lower surface is brought into contact with the lower surface of the stopper ring through the stepped portion, and a joint pile suspension portion is provided on the annular pile suspension member. did.

図１は、本発明の一実施例に係る杭吊込み装置を使用した基礎杭、即ち、下杭及び継ぎ杭（中杭、上杭）の沈設から拡大根固めまでの、一連の作業工程を示す工程図である。本実施例では基礎杭としては、コンクリート製杭を一例に挙げて説明するが、鋼管製杭にも勿論適用できる。図１において、この作業工程は、次の工程Ｓ１〜工程Ｓ９を備える。尚、基礎杭の頭端部には端板が配設され、端板の外側面に、内方へ向かって周溝が形成され、且つ、周溝の上面側に環状フランジ部が突設されている。
（１）工程Ｓ１においては、地盤に最初に打設されるコンクリート製の下杭２の中空部に、掘削排土用のオーガスクリュー１を補助クレーン３及び小型ブルドーザー４にて挿入する。
（２）工程Ｓ２においては、オーガスクリュー１を挿入した下杭２を、オーガスクリュー１と共に補助クレーン３で斜めに吊り込む。
（３）工程Ｓ３においては、杭芯位置に下杭２を設置する。この設置では、オーガモータ５側のオーガ６と、下杭２の中空部側にあるオーガスクリュー１とを接続し、下杭頭部拘束用のキャップ７を下杭２に被せる。
（４）工程Ｓ４においては、杭打ち機８の正面とその直角方向の側面との２方向より、トランシッドまたは下げ振りで杭及びリーダの鉛直性を確認する。
（５）工程Ｓ５においては、下杭２の先端部より掘削を開始し、下杭２の重量、モンケンキャップ等の静的荷重により、下杭２を徐々に沈設する。また、継ぎ杭９を下杭２に連結する位置まで沈設した時点で、オーガモータ５側のオーガ６と、中空部のオーガスクリュー１を離脱する。
（６）工程Ｓ６においては、予めオーガスクリュー１を挿入した継ぎ杭９を、補助クレーン３にて垂直に吊り込み、沈設した下杭２のオーガスクリュー１と、継ぎ杭９のオーガ６を接続する。次に、下杭２と継ぎ杭９とのそれぞれの金物を慎重に合わせて溶接し、下杭２と継ぎ杭９との間を連結する。
（７）工程Ｓ７においては、連結の終わったワイヤーロープを継ぎ杭９から外し、オーガモータ５側のオーガ６と継ぎ杭９のオーガとを接続し、継ぎ杭９の沈設に移る。
（８）工程Ｓ８においては、下杭２と同様に、オーガスクリュー１のビット部分より圧縮空気を吐出しながら、所定深度まで沈設する。
（９）工程Ｓ９においては、所定位置まで沈設した後、ビットを拡大し、根固め材を注入しながら支持層を攪拌し、強固な拡大球根を築造する。 FIG. 1 shows a series of work steps from the setting up of a foundation pile using a pile lifting device according to an embodiment of the present invention, that is, a lower pile and a joint pile (middle pile, upper pile) to an enlarged rooting. It is process drawing shown. In this embodiment, a concrete pile will be described as an example of the foundation pile, but it can of course be applied to a steel pipe pile. In FIG. 1, this work process includes the following processes S1 to S9. In addition, an end plate is disposed at the head end portion of the foundation pile, a circumferential groove is formed inward on the outer surface of the end plate, and an annular flange portion projects from the upper surface side of the circumferential groove. ing.
(1) In step S1, the auger screw 1 for excavation and earthing is inserted by the auxiliary crane 3 and the small bulldozer 4 into the hollow portion of the concrete lower pile 2 that is initially placed on the ground.
(2) In step S 2, the lower pile 2 into which the auger screw 1 is inserted is slung obliquely with the auxiliary crane 3 together with the auger screw 1.
(3) In process S3, lower pile 2 is installed in a pile core position. In this installation, the auger 6 on the auger motor 5 side and the auger screw 1 on the hollow portion side of the lower pile 2 are connected and the lower pile head restraining cap 7 is put on the lower pile 2.
(4) In step S4, the verticality of the pile and the leader is confirmed by a transit or a downward swing from the two directions of the front surface of the pile driving machine 8 and the side surface in the direction perpendicular thereto.
(5) In step S5, excavation is started from the tip of the lower pile 2, and the lower pile 2 is gradually laid by a static load such as the weight of the lower pile 2 and a monken cap. Further, when the joint pile 9 is laid down to a position where it is connected to the lower pile 2, the auger 6 on the auger motor 5 side and the auger screw 1 in the hollow portion are detached.
(6) In step S6, the joint pile 9 into which the auger screw 1 has been inserted in advance is suspended vertically by the auxiliary crane 3, and the auger screw 1 of the lower pile 2 and the auger 6 of the joint pile 9 are connected. . Next, the hardware of each of the lower pile 2 and the joint pile 9 is carefully aligned and welded, and the lower pile 2 and the joint pile 9 are connected.
(7) In step S 7, the wire rope that has been connected is removed from the joint pile 9, the auger 6 on the auger motor 5 side and the auger of the joint pile 9 are connected, and the joint pile 9 is moved down.
(8) In step S8, as with the lower pile 2, the compressed air is discharged from the bit portion of the auger screw 1 and is laid down to a predetermined depth.
(9) In step S9, after sunk to a predetermined position, the bit is enlarged, the support layer is stirred while injecting the root hardening material, and a strong enlarged bulb is built.

図２は、上記工程Ｓ６において、下杭２の上端部と継ぎ杭（上杭又は中杭）９の下端部とを連結するのに使用している端板の一構造例を示す。図２において、下杭２、継ぎ杭９は、中空状の杭である。各下杭２、継ぎ杭の両端部の端板は、円筒側板１２，１２と、各下杭２、継ぎ杭９の内径とほぼ同じ内径で作られている環状のフランジ部１３，１３とで構成され、該各下杭２、継ぎ杭９の製造時に、ＰＣ鋼線１４を用いて連結されている。 FIG. 2 shows one structural example of the end plate used to connect the upper end of the lower pile 2 and the lower end of the joint pile (upper pile or middle pile) 9 in the step S6. In FIG. 2, the lower pile 2 and the joint pile 9 are hollow piles. The end plates at both ends of each lower pile 2 and joint pile are cylindrical side plates 12 and 12 and annular flange portions 13 and 13 having the same inner diameter as the inner diameter of each lower pile 2 and joint pile 9. It is comprised and it connects using the PC steel wire 14 at the time of manufacture of this each lower pile 2 and the joint pile 9. FIG.

下杭２、継ぎ杭９は、各メーカ共通のフランジ部１３，１３を有する既製のコンクリート製品である。又、継ぎ手金具１０は、各下杭２、継ぎ杭９の端部の端部に跨るように形成されている。すなわち、継ぎ手金具１０は、各下杭２、継ぎ杭９の外側で円筒側板１２，１２及びフランジ部１３，１３を覆って取り付けられる接続片１５と、該接続片１５を円筒側板１２，１２に取り付ける六角ボルト１６，１６とにより構成されている。 The lower pile 2 and the joint pile 9 are ready-made concrete products having flange portions 13 and 13 common to the respective manufacturers. The joint fitting 10 is formed so as to straddle the end portions of the lower piles 2 and the joint piles 9. That is, the joint fitting 10 includes a connection piece 15 attached to cover the cylindrical side plates 12 and 12 and the flange portions 13 and 13 outside the lower piles 2 and the connection piles 9, and the connection pieces 15 to the cylindrical side plates 12 and 12. It is comprised by the hexagon bolts 16 and 16 to attach.

下杭２と継ぎ杭９とを互いに接続する場合は、まず、各下杭２、継ぎ杭９の連結する軸線方向の端面同士を互いに突き合わせ、かつ、両者の軸線を一致させて当接した後、この状態を保持して、連結部分（両端板）の周囲に接続片１５を配設する。次いで、接続片１５に形成された上下の取付孔１７にそれぞれ六角ボルト１６を挿通して、六角ボルト１６を円筒側板１２のねじ孔１８に螺合する。すると、既に打ち込まれた下杭２の上に、新たな継ぎ杭９を載置接続して、双方の杭２，９が同一軸線上に相互連結される。図２は下杭２と継ぎ杭９を連結した後の状態を示す。 When the lower pile 2 and the joint pile 9 are connected to each other, first, the end faces in the axial direction to which the lower piles 2 and the joint pile 9 are connected to each other are brought into contact with each other and the axes of the two are made to coincide with each other. In this state, the connection piece 15 is disposed around the connecting portion (both end plates). Next, the hexagon bolt 16 is inserted into the upper and lower mounting holes 17 formed in the connection piece 15, and the hexagon bolt 16 is screwed into the screw hole 18 of the cylindrical side plate 12. Then, a new joint pile 9 is mounted on the lower pile 2 that has already been driven, and both the piles 2 and 9 are interconnected on the same axis. FIG. 2 shows a state after the lower pile 2 and the joint pile 9 are connected.

図５に示すように、上記ストッパーリング２１は、リング状をしたリング本体部２７と、該リング本体部２７の内周側下部から内側に向かって略水平に突設された下側支持部（円環状段差部）２８とを有している。 As shown in FIG. 5, the stopper ring 21 includes a ring-shaped ring main body portion 27 and a lower support portion projecting substantially horizontally from the inner peripheral lower portion of the ring main body portion 27 toward the inner side ( Annular stepped portion) 28.

すなわち、ストッパーリング２１の本体部２７と下側支持部２８との縦断面形状は略Ｌ字状に形成されており、その内周側には、図３（ｂ）に示すように、フランジ部１３外周側の傾斜下面に当接する傾斜上面（段差部上面）２１Ａが設けられている。従って、ストッパーリング２１は、前記傾斜上面を介して、フランジ部１３下面に係合可能とされている。 That is, the longitudinal cross-sectional shape of the main body portion 27 and the lower support portion 28 of the stopper ring 21 is formed in a substantially L shape, and as shown in FIG. An inclined upper surface (upper surface of the stepped portion) 21 A that abuts the inclined lower surface on the outer peripheral side of 13 is provided. Therefore, the stopper ring 21 can be engaged with the lower surface of the flange portion 13 through the inclined upper surface.

尚、図３中の符号１９はフランジ部１３の下側に位置し、かつ、フランジ部１３の外側への膨らみにより端板外側面に形成された周溝である。フランジ部１３の傾斜下面には、図３（Ｃ）に示すように、前述したストッパーリング２１の段差部上面２１Ａが係合している。 3 is a circumferential groove which is located on the lower side of the flange portion 13 and is formed on the outer surface of the end plate by swelling outward of the flange portion 13. As shown in FIG. 3C, the stepped portion upper surface 21 A of the stopper ring 21 is engaged with the inclined lower surface of the flange portion 13.

図３ないし図５の符号２１は、フランジ部１３に装着されるストッパーリングであり、ストッパーリング２１は、全体が円周方向において少なくとも２つ円弧状分割体に分割されている。さらに、それぞれの円弧状分割体の一端部同士を枢軸３０で互いに回動可能に枢着連結し、閉位置と開位置とに回動できるようになっている。 3 to 5 is a stopper ring attached to the flange portion 13, and the stopper ring 21 is divided into at least two arc-shaped divided bodies in the circumferential direction as a whole. Further, one end portions of the respective arc-shaped divided bodies are pivotally connected to each other by a pivot 30 so that they can be rotated between a closed position and an open position.

図示例では、ストッパーリング２１の上部内周側の２か所には、フランジ部１３上面と対向する突起部２９が略水平に突設され、突起部２９はストッパーリング２１の中心方向に延びている。又、突起部２９には、フランジ部１３上面に当接する外れ止めねじ（止着部材）３４が設けられている（図６、図９等参照）。 In the illustrated example, protrusions 29 facing the upper surface of the flange portion 13 are provided substantially horizontally at two locations on the upper inner peripheral side of the stopper ring 21, and the protrusion 29 extends in the center direction of the stopper ring 21. Yes. Further, the protrusion 29 is provided with a locking screw (fixing member) 34 that comes into contact with the upper surface of the flange 13 (see FIGS. 6 and 9).

具体的には、各円弧状分割体側の突起部２９に、ナット３２が取り付けられた取付孔３３を上下貫通して設け、該ナット３２に螺合する外れ止めねじ３４の先端部でフランジ部１３上面を押圧当接させることにより、ストッパーリング２１が開いて外れるのを確実に防止している。該リング外れ止め構造は必要に応じて付設されるものであって、必ずしも設ける必要はない。 Specifically, a mounting hole 33 to which a nut 32 is attached is vertically provided in the protrusion 29 on each arcuate divided body side, and the flange portion 13 is formed at the tip of a locking screw 34 that is screwed into the nut 32. By pressing and contacting the upper surface, the stopper ring 21 is reliably prevented from opening and coming off. The ring detachment prevention structure is attached as necessary, and is not necessarily provided.

図示例のストッパーリング２１は、各円弧状分割体をそれぞれ開位置にセットして、各突起部２９をフランジ部１３の上側に臨ませることにより、一対の円弧状分割体の間にフランジ部１３が配置される。この後、各円弧状分割体を閉位置に回動させると、突起部２９がフランジ部１３上面と対向するとともに、下側支持部２８の傾斜上面がフランジ部１３傾斜下面と密接対向する。 The stopper ring 21 in the illustrated example is configured such that each arcuate segment is set at an open position and each projection 29 faces the upper side of the flange unit 13, so that the flange portion 13 is interposed between the pair of arcuate segments. Is placed. Thereafter, when each arcuate divided body is rotated to the closed position, the projecting portion 29 faces the upper surface of the flange portion 13 and the inclined upper surface of the lower support portion 28 closely faces the inclined lower surface of the flange portion 13.

これにより、ストッパーリング２１がフランジ部１３に装着され、フランジ部１３の外側全周縁部は、ストッパーリング２１によって包囲された状態になる。又、外れ止めねじ３４を締め付けることで、外れ止めねじ３４の先端がフランジ部１３上面を圧接し、この圧接力により、ストッパーリング２１がフランジ部１３に対して隙間のない安定した状態で取り付けられる。 Thereby, the stopper ring 21 is attached to the flange portion 13, and the entire outer peripheral edge portion of the flange portion 13 is surrounded by the stopper ring 21. Further, by tightening the locking screw 34, the tip of the locking screw 34 presses against the upper surface of the flange portion 13, and by this pressing force, the stopper ring 21 is attached to the flange portion 13 in a stable state without a gap. .

図３（ｃ）に示すように、環状杭吊部材２２は、ストッパーリング２１下面に係合する段設部２２Ａを有し、該段設部２２Ａの上側、下側に形成された拡径部２２Ｂ、縮径部２２Ｃの径寸法はそれぞれ、ストッパーリング２１の外径、下杭２及び継ぎ杭９の外径よりも若干大に設定されている。又、環状杭吊部材２２の段設部２２Ａは、ストッパーリング２１の外周縁部を覆って配置可能であり、かつ、環状杭吊部材２２の縮径部２２Ｃは、下杭２、継ぎ杭９の外周面を杭軸方向へ昇降可能になっている。 As shown in FIG. 3 (c), the annular pile suspension member 22 has a stepped portion 22A that engages with the lower surface of the stopper ring 21, and a diameter-enlarged portion formed on the upper side and the lower side of the stepped portion 22A. The diameters of 22B and the reduced diameter portion 22C are set slightly larger than the outer diameter of the stopper ring 21 and the outer diameters of the lower pile 2 and the joint pile 9, respectively. Further, the stepped portion 22A of the annular pile suspension member 22 can be arranged so as to cover the outer peripheral edge of the stopper ring 21, and the reduced diameter portion 22C of the annular pile suspension member 22 includes the lower pile 2 and the joint pile 9 Can be moved up and down in the direction of the pile axis.

環状杭吊部材２２は、内側段設部２２Ａがストッパーリング２１の外周縁部下面に当接することで、環状杭吊部材２２の上方位置が規制される。更に、環状杭吊部材２２の下部周壁には、左右方向（杭径方向）に貫通するねじ孔３５が所要数個（１個又は複数個）設けられ、該ねじ孔３５には、締結部材としてのずれ止めねじ３６が螺合されている。 In the annular pile suspension member 22, the upper position of the annular pile suspension member 22 is regulated by the inner stepped portion 22 A coming into contact with the lower surface of the outer peripheral edge of the stopper ring 21. Further, the lower peripheral wall of the annular pile suspension member 22 is provided with a required number (one or a plurality) of screw holes 35 penetrating in the left-right direction (pile radial direction). The set screw 36 is screwed.

ずれ止めねじ３６は、ねじ孔３５を杭径方向内方へ螺合貫通して、フランジ部１３下側の周溝１９内面又は杭外周面の位置Ｐ（図３（Ｃ）参照）に締め付け可能になっている。即ち、ずれ止めねじ３６は、周溝１９内面又は杭外周面の位置Ｐのいずれの箇所にも締め付けることができる。一方、ずれ止めねじ３６を緩めて、その先端部を環状杭吊部材２２の内周面より径方向外方へ退避させると、環状杭吊部材２２は下杭２、継ぎ杭９の外周面上を自由に上下移動できる。 The slip screw 36 can be screwed through the screw hole 35 inward in the pile radial direction and can be tightened to the inner surface 19 of the circumferential groove 19 below the flange portion 13 or to the position P of the outer peripheral surface of the pile (see FIG. 3C). It has become. That is, the locking screw 36 can be tightened at any position on the inner surface of the circumferential groove 19 or the position P on the outer peripheral surface of the pile. On the other hand, when the locking screw 36 is loosened and its tip is retracted radially outward from the inner peripheral surface of the annular pile suspension member 22, the annular pile suspension member 22 is on the outer peripheral surface of the lower pile 2 and the joint pile 9. Can move freely up and down.

図９に示すように、左右１対の各継ぎ杭吊部２３は、取付ブラケット３７と、概略Ｕ字状をしたＵ字部材３９とで構成され、Ｕ字部材３９は、取付ブラケット３７の上端部に枢軸３８を介して、前後方向に回動可能に取り付けられている。 As shown in FIG. 9, each pair of left and right joint pile hanging portions 23 is constituted by a mounting bracket 37 and a U-shaped member 39 having a substantially U shape, and the U-shaped member 39 is an upper end of the mounting bracket 37. It is attached to the part via a pivot 38 so as to be rotatable in the front-rear direction.

図９に示す継ぎ杭用の杭吊り込み装置２０の構成例では、取付ブラケット３７の下側基端部側は、環状杭吊部材２２の外側面に固設されている。次に、図６は下杭用として使用される杭吊り込み装置２０の構成例を示し、環状杭吊部材２２は、下杭用中間治具２４を介して下杭治具２５に溶接等の手段で一体的に構成されている。 In the configuration example of the pile hanging device 20 for the joint pile shown in FIG. 9, the lower base end side of the mounting bracket 37 is fixed to the outer surface of the annular pile hanging member 22. Next, FIG. 6 shows a configuration example of the pile lifting device 20 used for the lower pile, and the annular pile hanging member 22 is welded to the lower pile jig 25 via the lower pile intermediate jig 24. It is comprised integrally by the means.

下杭用中間治具２４は、杭内径よりも若干大きい内径、即ち、環状杭吊部材２２の内側縮径部の径寸法と同一の径寸法を有する筒状に作られている。中間治具２４の内側中空部は、下杭２が上下移動自在に貫通でき、環状杭吊部材２２の下側に隣接配置されている。尚、環状杭吊部材２２と中間治具２４は、必要に応じて互いに一体又は分割して構成できる。 The lower pile intermediate jig 24 is formed in a cylindrical shape having an inner diameter slightly larger than the inner diameter of the pile, that is, the same diameter as the inner diameter of the annular pile suspension member 22. The inner hollow portion of the intermediate jig 24 can be penetrated by the lower pile 2 so as to be movable up and down, and is disposed adjacent to the lower side of the annular pile suspension member 22. In addition, the annular pile suspension member 22 and the intermediate jig 24 can be configured integrally or divided with each other as necessary.

環状下杭治具２５は、中間治具２４の内径と同一の内径を有する環状体に作られている。環状下杭治具２５の内側中空部には、下杭２が上下移動自在に貫通され、中間治具２４の下側に隣接配置されている。尚、中間治具２４と環状下杭治具２５は、必要に応じて互いに一体又は分割して構成できる。また、環状下杭治具２５の外周面には、１つの下杭吊部２６が取り付けられている。 The annular lower pile jig 25 is made of an annular body having the same inner diameter as the inner jig 24. The lower pile 2 is penetrated through the inner hollow portion of the annular lower pile jig 25 so as to be movable up and down, and is disposed adjacent to the lower side of the intermediate jig 24. In addition, the intermediate | middle jig | tool 24 and the cyclic | annular lower pile jig | tool 25 can be comprised integrally or divided | segmented mutually as needed. Further, one lower pile hanging portion 26 is attached to the outer peripheral surface of the annular lower pile jig 25.

杭吊込み装置２０を下杭２又は継ぎ杭９に装着して実際に使用する場合は、まず、環状杭吊部材（上側治具）２２等の内側中空部を、下杭２又は継ぎ杭９に挿入貫通させ、かつ、該環状杭吊部材２２等を、図３（ａ）に示すように、杭のフランジ部１３よりも下側位置に逃がした状態にする。 When the pile hoisting device 20 is mounted on the lower pile 2 or the joint pile 9 and actually used, first, the inner hollow portion such as the annular pile suspension member (upper jig) 22 is used as the lower pile 2 or the joint pile 9. As shown in FIG. 3 (a), the annular pile suspension member 22 and the like are made to escape to a position below the flange portion 13 of the pile.

この後、開状態のストッパーリング２１をフランジ部１３の外周に配置したあと、ストッパーリング２１を閉状態にすることにより、図３（ｂ）に示すように、ストッパーリング２１がフランジ部１３外周縁部に装着固定される。 Thereafter, after the stopper ring 21 in the open state is disposed on the outer periphery of the flange portion 13, the stopper ring 21 is closed as shown in FIG. It is attached and fixed to the part.

続いて、下側に逃がしておいた環状杭吊部材２２等をストッパーリング２１側に移動させて、環状杭吊部材２２がストッパーリング２１の外周縁部を包囲する位置で停止させ、ストッパーリング２１の外周縁部下面に、環状杭吊部材２２の段設部２２Ａ上面を嵌合当接させる。つぎに、図３（ｃ）に示すように、ずれ止めねじ３６をねじ孔３５に螺合させて、ねじ先端部を周溝１９内またはその下側外周面位置Ｐに締め付ける。尚、図３では、リング外れ止め構造を省略している。 Subsequently, the annular pile suspension member 22 or the like that has been released downward is moved to the stopper ring 21 side, and stopped at a position where the annular pile suspension member 22 surrounds the outer peripheral edge of the stopper ring 21. The upper surface of the stepped portion 22 A of the annular pile suspension member 22 is fitted and brought into contact with the lower surface of the outer peripheral edge of the ring pile. Next, as shown in FIG. 3 (c), the locking screw 36 is screwed into the screw hole 35, and the screw tip is tightened in the circumferential groove 19 or the lower outer circumferential surface position P thereof. In FIG. 3, the ring detachment preventing structure is omitted.

ずれ止めねじ３６の締付け力により、ストッパーリング２１と環状杭吊部材２２との装着状態が安定して保たれる。次に、杭吊込み装置２０が下杭２に装着されている場合に、ワイヤーロープＷ１等を下側治具２５の下杭吊部２６に引っ掛けて上げると、下杭２が斜めの姿勢で吊り上げられる。又、杭吊込み装置２０が継ぎ杭９に装着されている場合に、ワイヤーロープＷ１等を上側治具２２の継ぎ杭吊部２３，２３に引っ掛けて上げると、継ぎ杭９が垂直の姿勢で吊り上げられる。 The fastening state of the stopper ring 21 and the annular pile suspension member 22 is stably maintained by the tightening force of the slip screw 36. Next, when the pile hoisting device 20 is mounted on the lower pile 2, when the wire rope W1 or the like is hooked on the lower pile hanging portion 26 of the lower jig 25, the lower pile 2 is inclined. Can be lifted. Further, when the pile hoisting device 20 is attached to the joint pile 9, when the wire rope W1 or the like is hooked and raised on the joint pile hanging portions 23, 23 of the upper jig 22, the joint pile 9 is in a vertical posture. Can be lifted.

（オーガスクリュー及び杭頭保持キャップの接続手順）
杭吊込み装置２０が下杭２又は継ぎ杭９に装着されている場合、下杭２又は継ぎ杭９側のオーガスクリュー、フランジ部１３に夫々、オーガモータ側のオーガスクリュー、杭頭保持キャップを容易に接続することができる。この接続手順を簡単に述べると、下杭２又は継ぎ杭９の真上位置にモータ側のオーガスクリュー、杭頭保持キャップを夫々ワイヤーロープで吊り上げる。そして、モータ側オーガスクリューを下降させて杭側オーガスクリューにジョイントピンで連結する。この後、杭頭保持キャップを下降させて杭側フランジ部１３に被着して接続する。 (Connection procedure of auger screw and pile head holding cap)
When the pile lifting device 20 is attached to the lower pile 2 or the joint pile 9, the auger screw on the lower pile 2 or the joint pile 9 side and the auger screw on the auger motor side and the pile head holding cap are easily attached to the flange portion 13, respectively. Can be connected to. Briefly describing this connection procedure, the auger screw on the motor side and the pile head holding cap are suspended by wire ropes at positions directly above the lower pile 2 or the joint pile 9, respectively. Then, the motor side auger screw is lowered and connected to the pile side auger screw with a joint pin. Thereafter, the pile head holding cap is lowered and attached to and connected to the pile side flange portion 13.

（下杭用形態）
杭吊込み装置２０を下杭用として使用する手順について説明する。図６に示すように、杭吊込み装置２０の下杭用形態の場合は、環状杭吊部材２２と中間治具２４と下杭治具２５との各隣接部分が、互いに溶接されて一体化されている。勿論、下杭治具２５には、前述のワイヤーロープ掛止用の下杭吊部２６が枢着されている。 (Form for lower pile)
A procedure for using the pile hoisting device 20 for the lower pile will be described. As shown in FIG. 6, in the case of the lower pile configuration for the pile hoisting device 20, the adjacent portions of the annular pile hanging member 22, the intermediate jig 24, and the lower pile jig 25 are welded and integrated with each other. Has been. Of course, the lower pile jig 25 is pivotally attached to the lower pile hanging portion 26 for hooking the wire rope.

尚、杭吊込み装置２０の装着時に下杭２は横向き状態に置かれている。まず、互いに一体化された前記治具２２，２４，２５は、フランジ部１３及び周溝１９の位置よりも下方側に逃がした状態にしておき、この状態でストッパーリング２１を上記手順でフランジ部１３に装着する。続いて、下側に逃がしておいた前記治具２２，２４，２５をフランジ部１３側に移動させる。そして、上側治具（環状杭吊部材）２２がストッパーリング２１を包囲する位置まで上方に移動したら、その位置で、ずれ止めねじ３６をねじ孔３５に螺合させて、上側治具２２を下杭２に締め付ける。 In addition, the lower pile 2 is placed sideways when the pile hoisting device 20 is mounted. First, the jigs 22, 24, 25 integrated with each other are in a state where they are released below the positions of the flange portion 13 and the circumferential groove 19, and in this state, the stopper ring 21 is moved to the flange portion by the above procedure. Attach to 13. Subsequently, the jigs 22, 24, 25 that have escaped downward are moved to the flange portion 13 side. Then, when the upper jig (annular pile suspension member) 22 moves upward to a position surrounding the stopper ring 21, the shift screw 36 is screwed into the screw hole 35 at that position to lower the upper jig 22. Tighten to pile 2.

これにより、下杭吊部２６付きの杭吊込み装置２０が下杭２に取り付けられる。したがって、クレーン等のワイヤーロープＷ１、ワイヤーロープＷ２等を下杭吊部２６、杭側オーガスクリュー２Ｓの吊部に引っ掛けて吊ることにより、下杭２及びオーガスクリュー２Ｓを斜めの姿勢で吊ることができる。 Thereby, the pile suspension apparatus 20 with the lower pile suspension part 26 is attached to the lower pile 2. Therefore, the lower pile 2 and the auger screw 2S can be suspended in an oblique posture by hooking the wire rope W1, such as a crane, the wire rope W2, etc. on the lower pile hanging portion 26 and the hanging portion of the pile-side auger screw 2S. it can.

このあと、下杭２側のオーガスクリュー２Ｓ、フランジ部１３の部分にオーガモータ５側のオーガスクリュー６、杭頭保持キャップ５Ｃを取り付ける場合には、図７に示すように、杭側オーガスクリュー２Ｓの上端部を杭吊込み装置２０よりも上側に所定寸法だけ突出するように保持する。他方、オーガモータ５側のオーガスクリュー６、杭頭保持キャップ５ＣをワイヤーロープＷ３、ワイヤーロープＷ４でそれぞれ吊って、下杭２、杭側オーガスクリュー２Ｓの真上に位置させる。 After that, when the auger screw 6 on the auger motor 5 side and the pile head holding cap 5C are attached to the auger screw 2S on the lower pile 2 side and the flange portion 13, as shown in FIG. An upper end part is hold | maintained so that only a predetermined dimension may protrude above the pile suspension apparatus 20. FIG. On the other hand, the auger screw 6 and the pile head holding cap 5C on the auger motor 5 side are suspended by the wire rope W3 and the wire rope W4, respectively, and are positioned directly above the lower pile 2 and the pile side auger screw 2S.

そして、ワイヤーロープＷ３を徐々に下げながら、モータ側オーガスクリュー６を適宜回転させて、杭側オーガスクリュー２Ｓの接続部に位置合わせして嵌合させる。ついで、作業員が両オーガスクリュー２Ｓ、６の接続部のピン穴に連結ピンＴＰを挿入して、図８に示すように、両オーガスクリュー２Ｓ、６を互いに連結接続する。 Then, while gradually lowering the wire rope W3, the motor-side auger screw 6 is appropriately rotated to be aligned with and fitted to the connecting portion of the pile-side auger screw 2S. Next, the operator inserts the connecting pin TP into the pin hole of the connecting portion of the both auger screws 2S, 6 and connects both the auger screws 2S, 6 to each other as shown in FIG.

次に、ずれ止めねじ３６を緩めた後、治具２２，２４，２５を地面ＧＬまで吊り下ろし、作業員が外れ止めねじ３４を緩めて、ストッパーリング２１を下杭２のフランジ部１３から取り外す。そして、ワイヤーロープＷ４を徐々に下げながら、杭頭保持キャップ５Ｃを下降させ、杭２の上端側フランジ部１３外周に杭頭保持キャップ５Ｃの下側接続部を被せて固定する。 Next, after loosening the locking screw 36, the jigs 22, 24, and 25 are suspended to the ground GL, the worker loosens the locking screw 34, and removes the stopper ring 21 from the flange portion 13 of the lower pile 2. . Then, the pile head holding cap 5C is lowered while gradually lowering the wire rope W4, and the lower connection portion of the pile head holding cap 5C is placed on the outer periphery of the upper end flange portion 13 of the pile 2 and fixed.

そのあとは、従来同様の手順により下杭２を沈設させるが、沈設後は、上記とは逆の手順で杭頭保持キャップ５Ｃ、モータ側オーガスクリュー６を下杭２から取り外すと共に、治具２２，２４，２５を下杭２から取り外してクレーン等で離脱・回収する。 Thereafter, the lower pile 2 is laid down by the same procedure as before, but after laying, the pile head holding cap 5C and the motor side auger screw 6 are removed from the lower pile 2 by the reverse procedure to the above, and the jig 22 , 24, 25 are removed from the lower pile 2 and removed and collected by a crane or the like.

（継ぎ杭用形態）
図９に示している杭吊込み装置２０の使用形態は、継ぎ杭（上杭、中杭）用の形態である。尚、杭吊込み装置２０の装着時に継ぎ杭９は横向き状態に置かれている。この継ぎ杭用形態では、環状杭吊部材２２とストッパーリング２１とが用意され、また、環状杭吊部材２２には１対の継ぎ杭吊部２３，２３が取り付けられている。 (Form for joint pile)
The usage form of the pile hoisting device 20 shown in FIG. 9 is a form for a joint pile (upper pile, middle pile). In addition, the joint pile 9 is set to the horizontal state at the time of mounting | wearing of the pile hoisting apparatus 20. FIG. In this joint pile form, an annular pile suspension member 22 and a stopper ring 21 are prepared, and a pair of joint pile suspension portions 23, 23 are attached to the annular pile suspension member 22.

杭吊込み装置２０を継ぎ杭用として使用する手順について説明する。まず、環状杭吊部材２２をフランジ部１３及び周溝１９の位置よりも下方側に逃がした状態にしておき、この状態でストッパーリング２１をフランジ部１３に装着する。続いて、下側に逃がしておいた環状杭吊部材２２をフランジ部１３側に移動させる。そして、環状杭吊部材２２がストッパーリング２１の外側を包囲する位置まで上方へ移動したら、その位置で、ずれ止めねじ３６をねじ孔３５に螺合させて、環状杭吊部材２２を継ぎ杭９に締め付ける。 A procedure for using the pile hoisting device 20 for a joint pile will be described. First, the annular pile suspension member 22 is left in a state where it is released below the positions of the flange portion 13 and the circumferential groove 19, and the stopper ring 21 is attached to the flange portion 13 in this state. Subsequently, the annular pile suspension member 22 that has escaped to the lower side is moved to the flange portion 13 side. And if the cyclic | annular pile suspension member 22 moves upwards to the position which surrounds the outer side of the stopper ring 21, the shift screw 36 will be screwed in the screw hole 35 in the position, and the cyclic | annular pile suspension member 22 will be connected to the splice 9 Tighten to.

これにより、継ぎ杭吊部２３付きの杭吊込み装置２０が継ぎ杭９に取り付けられる。したがって、クレーン等のワイヤーロープＷ１、ワイヤーロープＷ２を、継ぎ杭吊部２３、杭側オーガスクリュー９Ｓの各吊部にそれぞれ引っ掛けて吊ることにより、継ぎ杭９及びオーガスクリュー９Ｓを垂直の姿勢にして吊ることができる。 Thereby, the pile suspension device 20 with the joint pile suspension part 23 is attached to the joint pile 9. Therefore, the joint pile 9 and the auger screw 9S are brought into a vertical posture by hooking the wire rope W1 and the wire rope W2 such as cranes on the suspension portions of the joint pile hanging portion 23 and the pile side auger screw 9S, respectively. Can be hung.

次に、既に沈設されている下杭２の上端側端板に、継ぎ杭９の下端側端板を接続する際は、吊り込み状態の継ぎ杭９及びオーガスクリュー９Ｓをそれぞれ、下杭２及びオーガスクリュー２Ｓの真上に位置させた後、継ぎ杭９及びオーガスクリュー９Ｓを徐々に下降させながら位置合わせする。そして、オーガスクリュー２Ｓ，９Ｓの接続部を連結ピンで接続した後、図２に示した継ぎ手金具１０を用いて、下杭２の上に継ぎ杭９を連結して自立状態に接続させる。 Next, when the lower end side end plate of the joint pile 9 is connected to the upper end side end plate of the already piled lower pile 2, the suspended pile 9 and the auger screw 9S are respectively connected to the lower pile 2 and the auger screw 9S. After being positioned directly above the auger screw 2S, the joint pile 9 and the auger screw 9S are aligned while being gradually lowered. And after connecting the connection part of auger screws 2S and 9S with a connection pin, the joint pile 9 is connected on the lower pile 2 using the joint metal fitting 10 shown in FIG.

このあと、継ぎ杭９から環状杭吊部材２２を取り外す場合は、ずれ止めねじ３６を緩めた後、ワイヤーロープＷ１を下げて環状杭吊部材２２の位置を下方に若干移動させ、作業員がストッパーリング２１を継ぎ杭９のフランジ部１３から取り外す。取外し後、そのままクレーン等でワイヤーロープＷ１を引き上げて、環状杭吊部材２２を継ぎ杭９から取り外して離脱・回収する。 Thereafter, when removing the annular pile suspension member 22 from the joint pile 9, after loosening the locking screw 36, the wire rope W1 is lowered and the position of the annular pile suspension member 22 is slightly moved downward, and the worker stops the stopper. The ring 21 is removed from the flange portion 13 of the joint pile 9. After removal, the wire rope W1 is pulled up with a crane or the like as it is, and the annular pile suspension member 22 is detached from the joint pile 9 and detached and collected.

回収後、杭側オーガスクリュー９Ｓ、フランジ部１３の部分にオーガモータ５側のオーガスクリュー６、杭頭保持キャップ５Ｃを取り付ける場合は、図１０に示すように、ワイヤーロープＷ３、ワイヤーロープＷ４でオーガスクリュー６、杭頭保持キャップ５Ｃをそれぞれ吊持して、杭側オーガスクリュー９Ｓ、継ぎ杭９の真上に位置させる。 When the auger screw 6 and the pile head holding cap 5C on the auger motor 5 side are attached to the pile side auger screw 9S and the flange portion 13 after collection, the auger screw is connected with the wire rope W3 and the wire rope W4 as shown in FIG. 6. The pile head holding caps 5C are respectively suspended and positioned just above the pile-side auger screw 9S and the joint pile 9.

ついで、ワイヤーロープＷ３、ワイヤーロープＷ４を徐々に下げながら、モータ側オーガスクリュー６、杭頭保持キャップ５Ｃを杭側オーガスクリュー９Ｓ、フランジ部１３の接続部に位置合わせして連結する。この場合、オーガスクリュー６を杭側オーガスクリュー９Ｓに接続した後に、杭頭保持キャップ５Ｃをフランジ部１３の外周に装着する。この後、上記同様の手順で、オーガモータ５の駆動により下杭２、継ぎ杭９を沈設させる。 Next, while gradually lowering the wire rope W3 and the wire rope W4, the motor side auger screw 6 and the pile head holding cap 5C are aligned and connected to the connection portion of the pile side auger screw 9S and the flange portion 13. In this case, after connecting the auger screw 6 to the pile-side auger screw 9 S, the pile head holding cap 5 C is attached to the outer periphery of the flange portion 13. Thereafter, the lower pile 2 and the joint pile 9 are sunk by driving the auger motor 5 in the same procedure as described above.

以上のように、杭吊込み装置２０によれば、ストッパーリング２１の着脱および環状杭吊部材２２の係脱が簡単になり、杭吊込み装置２０を継ぎ杭９又は下杭２に確実・容易に着脱できる。 As described above, according to the pile hoisting device 20, the attachment / detachment of the stopper ring 21 and the engagement / disengagement of the annular pile hoisting member 22 are simplified, and the pile hoisting device 20 is reliably and easily attached to the joint pile 9 or the lower pile 2. Detachable.

また、環状杭吊部材２２はストッパーリング２１の外周部を包囲して保持するので、ストッパーリング２１が開くことはない。加えて、環状杭吊部材２２を杭軸方向へスライドさせるだけで、環状杭吊部材２２をストッパーリング２１に対して容易に係合離脱させることができる。 Moreover, since the annular pile suspension member 22 surrounds and holds the outer periphery of the stopper ring 21, the stopper ring 21 does not open. In addition, the annular pile suspension member 22 can be easily engaged with and disengaged from the stopper ring 21 only by sliding the annular pile suspension member 22 in the pile axis direction.

更に、継ぎ杭吊部９又は下杭２にワイヤーロープ等を引っ掛けて上げると、継ぎ杭９又は下杭２が垂直又は斜め、且つ容易に吊り上げられる。 Furthermore, when a wire rope or the like is hooked and raised on the joint pile suspension portion 9 or the lower pile 2, the joint pile 9 or the lower pile 2 is easily lifted vertically or obliquely.

継ぎ杭９又は下杭２に杭吊込み装置が確実かつ安定的に連結保持され、継ぎ杭９又は下杭２の吊り込み時に、杭吊込み装置２０が継ぎ杭９又は下杭２から外れることはなく、杭吊り込み作業の施工効率が著しく向上する。 The pile suspension device is securely and stably connected and held to the joint pile 9 or the lower pile 2, and the pile suspension device 20 is detached from the joint pile 9 or the lower pile 2 when the joint pile 9 or the lower pile 2 is suspended. No, the construction efficiency of the pile suspending work is significantly improved.

なお、本発明は、本発明の精神を逸脱しない限り種々の改変を為すことができ、そして、本発明が該改変されたものに及ぶことは当然である。 It should be noted that the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

例えば、ストッパーリング２１は、図１１及び図１２に示すように、第１の円弧状分割体２１Ａの一端部と第２の円弧状分割体２１Ｂの一端部との間、及び、第１の円弧状分割体２１Ａの他端部と第２の円弧状分割体２１Ｂの他端部との間に、支軸４１でリンク結合しているリンク片４０ａ，４０ｂを設け、更に、リンク片４０ｂと第２の円弧状分割体２１Ｂとの間を開放できるように構成してもよい。 For example, as shown in FIGS. 11 and 12, the stopper ring 21 is formed between one end portion of the first arc-shaped divided body 21 A and one end portion of the second arc-shaped divided body 21 B and the first circle. Link pieces 40a and 40b linked by a support shaft 41 are provided between the other end of the arc-shaped divided body 21A and the other end of the second arc-shaped divided body 21B. You may comprise so that the space | interval between 2 circular-arc-shaped division bodies 21B can be open | released.

このように構成すると、第１の円弧状分割体２１Ａの他端部と第２の円弧状分割体２１Ｂの他端部を大きく開かせることができ、ストッパーリング２１をフランジ部１３に取り付ける際の作業性が非常に容易になる。尚、ストッパーリング２１を構成する分割体の個数は特に限定されず、必要に応じて３個以上設けることも可能であり、要は、ストッパーリング２１を開閉可能に構成して、フランジ部１３に着脱自在に装着できれば、如何なる構造でも差し支えない。 If comprised in this way, the other end part of 21 A of 1st circular arc-shaped division bodies and the other end part of the 2nd circular arc-shaped division body 21B can be opened largely, and when attaching the stopper ring 21 to the flange part 13, it is possible. Workability becomes very easy. In addition, the number of the divided bodies constituting the stopper ring 21 is not particularly limited, and three or more can be provided as necessary. In short, the stopper ring 21 is configured to be openable and closable, Any structure can be used as long as it can be detachably attached.

また、図１３は、円弧状分割体４３Ａの両端部に、円弧状分割体４３Ｂ、４３Ｃの一端部を、ヒンジピン４５、４６を有するヒンジプレート４４、及び、ヒンジピン４８、４９を有するヒンジプレート４７を介してリンク連結すると共に、分割体４３Ｂ、４３Ｃの他端部同士を、固定ピン５１とボルト５２を有する外れ止めプレート５０を介して着脱自在に連結することにより、開閉自在なストッパーリング２１を作製したものである。このように構成しても、ストッパーリング２１の取り付け作業性が向上する。 Further, FIG. 13 shows that one end of each of the arc-shaped divided bodies 43B and 43C is attached to both ends of the arc-shaped divided body 43A, the hinge plate 44 having the hinge pins 45 and 46, and the hinge plate 47 having the hinge pins 48 and 49. And the other ends of the split bodies 43B and 43C are detachably connected via a locking plate 50 having a fixing pin 51 and a bolt 52, thereby producing a stopper ring 21 that can be freely opened and closed. It is a thing. Even if comprised in this way, the attachment workability | operativity of the stopper ring 21 improves.

本発明の一実施例に係る杭吊込み装置を使用した杭の沈設から拡大根固めまでの一連の作業工程を示す模式図。The schematic diagram which shows a series of work processes from the sedimentation of the pile which uses the pile hoisting device which concerns on one Example of this invention to expansion rooting. 本実施例で下杭と継ぎ杭とを連結するのに使用している継ぎ手金具の構造例を示す断面図。Sectional drawing which shows the structural example of the joint metal fitting used in order to connect a lower pile and a joint pile in a present Example. 同上杭吊込み装置の取り付け手順を説明する図であり、（ａ）はフランジ部よりも下側位置に環状杭吊部材を配置させたときの状態を示す要部断面図、（ｂ）はフランジ部にストッパーリングを取り付けたときの状態を示す要部断面図、（ｃ）はストッパーリング下面に環状杭吊部材の段設部を係合嵌着させたときの状態を示す要部断面図。It is a figure explaining the attachment procedure of a pile suspension apparatus same as the above, (a) is principal part sectional drawing which shows a state when arrange | positioning an annular pile suspension member in the position below a flange part, (b) is a flange. The principal part sectional drawing which shows a state when a stopper ring is attached to a part, (c) is principal part sectional drawing which shows a state when the stepped part of a cyclic | annular pile suspension member is engaged and fitted to the stopper ring lower surface. 一実施例の杭吊込み装置の杭取付け状態を説明する平面図。The top view explaining the pile installation state of the pile suspension apparatus of one Example. 一実施例に係るストッパーリングの構成例を説明する平面図。The top view explaining the structural example of the stopper ring which concerns on one Example. 図４の杭吊込み装置の下杭用形態を示すＡ−Ａ線断面図。The AA sectional view taken on the line which shows the form for lower piles of the pile suspension apparatus of FIG. 同上杭吊込み装置の下杭用形態での吊り込み時を説明する縦断面図。The longitudinal cross-sectional view explaining the time of suspension in the form for lower piles of a pile suspension apparatus same as the above. 実施例に係る杭のフランジ部に杭頭保持キャップを装着したときの状態を示す要部断面図。The principal part sectional drawing which shows a state when mounting a pile head holding cap to the flange part of the pile which concerns on an Example. 図４の杭吊込み装置の継ぎ杭用形態を示すＡ−Ａ線断面図。The AA sectional view taken on the line which shows the form for joint piles of the pile suspension apparatus of FIG. 同上杭吊込み装置の継ぎ杭用形態での吊り込み時を説明する示す縦断面図。The longitudinal cross-sectional view which shows the time of suspension in the form for joint piles of a pile suspension apparatus same as the above. 同上ストッパーリングの一変形例を示す平面図。The top view which shows one modification of a stopper ring same as the above. 図１１のＢ部側面図。The B section side view of FIG. 同上ストッパーリングの他の変形例を示す平面図。The top view which shows the other modification of a stopper ring same as the above.

符号の説明Explanation of symbols

２下杭
９継ぎ杭（上杭、中杭）
１３フランジ部
１９周溝
２０杭吊込み装置
２１ストッパーリング
２２環状杭吊部材（上側治具）
２３継ぎ杭吊部
２４中間治具
２５環状下杭治具（下側治具）
２６下杭吊部
２７リング本体部
２８下側支持部（段差部）
２９突起部
３０枢軸
３２ナット
３４外れ止めねじ（止着部材）
３５ねじ孔
３６ずれ止めねじ（締結部材）
３７取付ブラケット
３８枢軸
３９Ｕ字部材

2 Lower pile 9 Joint pile (upper pile, middle pile)
13 Flange portion 19 Circumferential groove 20 Pile lifting device 21 Stopper ring 22 Ring pile suspension member (upper jig)
23 Joint pile hanging part 24 Intermediate jig 25 Annular lower pile jig (lower jig)
26 Lower pile suspension part 27 Ring body part 28 Lower support part (step part)
29 Protrusion 30 Axis 32 Nut 34 Retaining Screw (Fastening Member)
35 Screw hole 36 Stopper screw (fastening member)
37 Mounting bracket 38 Axis 39 U-shaped member

Claims

地盤に最初に打設される下杭に連結される継ぎ杭端部に配設されている端板であって、該端板は外側面に、内方へ向かって周溝が形成され、且つ、該周溝の上面にフランジ部が突設され、該フランジ部の下面に係合する段差部を有するストッパーリングを、該段差部を介して該フランジ部下面に当接させ、更に、該ストッパーリングの下面に係合する段設部を有する環状杭吊部材を、該段設部を介して前記ストッパーリングの下面に当接させ、且つ、環状杭吊部材に継ぎ杭吊部を設け、該継ぎ杭吊部にワイヤーロープ等を引っ掛けて継ぎ杭を吊り込むことができるように構成されたことを特徴とする杭吊込み装置。 An end plate disposed at a joint pile end connected to a lower pile that is first placed on the ground, the end plate having a circumferential groove formed in an inward direction on an outer surface; and A stopper ring having a stepped portion protruding from the upper surface of the circumferential groove and engaged with the lower surface of the flange portion is brought into contact with the lower surface of the flange portion through the stepped portion; An annular pile suspension member having a stepped portion engaged with the lower surface of the ring is brought into contact with the lower surface of the stopper ring via the stepped portion, and a joint pile suspension portion is provided on the annular pile suspension member, A pile hoisting device configured to be able to hang a joint pile by hooking a wire rope or the like on the joint pile hanging portion.

地盤に最初に打設される下杭端部に配設されている端板であって、該端板は外側面に、内方へ向かって周溝が形成され、且つ、該周溝の上面にフランジ部が突設され、該フランジ部の下面に係合する段差部を有するストッパーリングを、該段差部を介して該フランジ部下面に当接させ、更に、該ストッパーリングの下面に係合する段設部を有する環状杭吊部材を、該段設部を介して前記ストッパーリングの下面に当接させ、該環状杭吊部材の下側に、下杭吊部を有する環状下杭治具を連設し、該下杭吊部にワイヤーロープ等を引っ掛けて下杭を吊り込むことができるように構成されたことを特徴とする杭吊込み装置。 An end plate disposed at an end of a lower pile that is first placed on the ground, wherein the end plate has an outer surface formed with a circumferential groove and an upper surface of the circumferential groove. A stopper ring having a flange portion projecting from the flange portion and having a step portion engaged with the lower surface of the flange portion is brought into contact with the lower surface of the flange portion through the step portion, and further engaged with the lower surface of the stopper ring. An annular pile hanging member having a stepped portion to be brought into contact with the lower surface of the stopper ring via the stepped portion, and an annular lower pile jig having a lower pile hanging portion on the lower side of the annular pile hanging member A pile hoisting device characterized in that the lower pile can be hung by hooking a wire rope or the like on the lower pile hanging portion.

前記環状杭吊部材は締結部材により上記継ぎ杭又は下杭に固定されていることを特徴とする請求項１又は２記載の杭吊込み装置。 The pile lifting device according to claim 1 or 2, wherein the annular pile suspension member is fixed to the joint pile or the lower pile by a fastening member.

上記ストッパーリングは、複数の円弧状分割体を互いに回動可能に連結して成り、且つ、上記継ぎ杭又は下杭のフランジ部に着脱自在に取り付けられるように構成したことを特徴とする請求項１，２又は３記載の杭吊込み装置。 The stopper ring is formed by connecting a plurality of arc-shaped divided bodies to each other so as to be rotatable, and is configured to be detachably attached to a flange portion of the joint pile or the lower pile. The pile hoisting device according to 1, 2 or 3.

上記ストッパーリングの内周部上側には、上記継ぎ杭又は下杭のフランジ部上面と対向する突起部が形成されていると共に、該突起部に、前記フランジ部上面に当接する止着部材が設けられていることを特徴とする請求項１，２，３又は４記載の杭吊込み装置。

On the upper side of the inner peripheral portion of the stopper ring, a protrusion is formed that faces the upper surface of the flange of the joint pile or lower pile, and a fixing member that contacts the upper surface of the flange is provided on the protrusion. The pile hoisting device according to claim 1, 2, 3, or 4, wherein