JP7116995B2 - hammered spiral pile - Google Patents

hammered spiral pile Download PDF

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JP7116995B2
JP7116995B2 JP2018133708A JP2018133708A JP7116995B2 JP 7116995 B2 JP7116995 B2 JP 7116995B2 JP 2018133708 A JP2018133708 A JP 2018133708A JP 2018133708 A JP2018133708 A JP 2018133708A JP 7116995 B2 JP7116995 B2 JP 7116995B2
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spiral
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wire rod
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英昭 相澤
智之 白崎
健介 佐治
智博 小谷
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株式会社白崎コーポレーション
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本発明は、叩打式螺旋杭、より詳しくは、地面に敷設した防草シートや土木シート等の各種シート材を地面に固定するための叩打式のシート押え杭に関する。 The present invention relates to a hammering type spiral pile, and more particularly to a hammering type sheet holding pile for fixing various sheet materials such as a weed control sheet and a civil engineering sheet laid on the ground to the ground.

周知のとおり、農地や道路脇等において、雑草が繁茂するのを防ぐため、地面に防草シートを敷設することが行われている。この防草シートの固定は、シート押え杭を地面に打ち込んで行うのが一般的であるが、強風等により防草シートが容易に捲れ上がらないように、シート押え杭は地面に確りと固定されている必要がある。 As is well known, weed control sheets are laid on the ground in order to prevent weeds from growing on farmlands, roadsides, and the like. This weed control sheet is generally fixed by driving sheet holding piles into the ground, but the sheet holding piles are firmly fixed to the ground so that the weed control sheet does not easily roll up due to strong winds or the like. must be

従来、地面からの引抜き抵抗性を高めたシート押え杭として、例えば下記特許文献１に記載の螺旋杭が提案されている。この螺旋杭は、杭本体が螺旋形状を成しているため、その螺旋部分が地中で確りと保持されることになり、杭の引抜き抵抗性を格段に向上させることができる。 Conventionally, a helical pile described in Patent Document 1 below, for example, has been proposed as a sheet pressing pile with enhanced pull-out resistance from the ground. Since the pile body has a helical shape, the helical portion of the helical pile is firmly held in the ground, and the pull-out resistance of the pile can be significantly improved.

しかしながら、従来の螺旋杭は、地面に打ち込まれた状態での引抜き抵抗性には優れているものの、打ち込み作業時には、杭本体に外部から回転力を与えて地面にねじ込む必要があり、シート敷設時に多数の螺旋杭を一本一本ねじ込んでゆく作業には、多大な手間を要した。また、打ち込み作業時に、インパクトドライバ等の回転工具を利用するにしても、その回転工具の準備を行う必要があり、さらに回転工具に対する螺旋杭の装着操作に手間がかかり、打込み作業性に難点があった。 However, although conventional spiral piles have excellent pull-out resistance when they are driven into the ground, they need to be screwed into the ground by applying a rotational force to the pile body from the outside during driving work. It took a lot of time and effort to screw in a large number of spiral piles one by one. In addition, even if a rotating tool such as an impact driver is used during driving, it is necessary to prepare the rotating tool. there were.

また、現在までに、引抜き抵抗性を改善した叩打式のシート押え杭として、例えば下記特許文献２に記載のものが提案されている。この杭は、杭本体が直線形状を成しており、その杭本体の周面に螺旋突条を設けたものである。頭部をハンマー等で叩打するだけで、その螺旋突条により杭自身が回転して地面に打ち込むことができるので、打込み作業性に優れているものの、上述した杭本体が螺旋形状を成す螺旋杭に比べ、引抜き抵抗性に劣る難点があった。 Further, up to now, for example, the one described in Patent Document 2 below has been proposed as a tapping type sheet holding pile with improved pull-out resistance. In this pile, the pile body has a linear shape, and a spiral ridge is provided on the peripheral surface of the pile body. By simply hitting the head with a hammer or the like, the pile itself rotates and can be driven into the ground by the helical ridges, so that the helical pile has excellent driving workability, but the above-mentioned pile body forms a helical shape. Compared to , there was a drawback that it was inferior in pull-out resistance.

特開２０１３－３９０５４号公報JP 2013-39054 A 特許第６０３５６６４号公報Japanese Patent No. 6035664

本発明は、従来のシート押え杭に上記のような難点があったことに鑑みて為されたもので、ハンマー等で叩打するだけで、たとえ比較的に硬い地面に対しても容易に打ち込むことができ、しかも、たとえ比較的に軟弱な地面においても優れた引抜き抵抗性を発揮する叩打式螺旋杭を提供することを課題とする。 The present invention was devised in view of the above-mentioned drawbacks of conventional sheet holding piles, and can be easily driven into even relatively hard ground simply by striking with a hammer or the like. To provide a hammering type spiral pile capable of pulling out and exhibiting excellent pull-out resistance even on relatively soft ground.

本発明は、螺旋形状の線材のみから成る螺旋部を少なくとも先端側に有する杭本体と、前記杭本体の基端部に設けられた叩打部と、前記杭本体の基端側に設けられたシート押え部とを備えており、前記螺旋部の前記線材は、当該螺旋部の螺旋軸線上から外れて位置し、前記螺旋部における前記線材の軸線方向と前記螺旋部の螺旋軸線に対し直角な平面とが成す前記線材の捩れ角が４５～８０度であり、前記螺旋部における前記線材の巻き数が１～２回であることを特徴としている。 The present invention comprises a pile body having at least a helical portion made of a helical wire rod at least on the tip end side , a tapping portion provided at the base end portion of the pile body, and a sheet provided at the base end side of the pile body. and a pressing portion , wherein the wire rod of the spiral portion is located off the spiral axis of the spiral portion, and is a plane perpendicular to the axial direction of the wire rod in the spiral portion and the spiral axis of the spiral portion. The wire has a twist angle of 45 to 80 degrees, and the number of turns of the wire in the helical portion is 1 to 2.

また、本発明は、前記杭本体の基端側に直線形状の線材から成る直線部を備えており、前記直線部の基端部に前記叩打部が設けられていることを特徴としている。 Further, the present invention is characterized in that a straight portion made of a straight wire rod is provided on the base end side of the pile body, and the tapping portion is provided at the base end of the straight portion.

また、本発明は、前記螺旋部が異形棒鋼を曲げ加工して形成されていることを特徴としている。 Further, the present invention is characterized in that the spiral portion is formed by bending a deformed steel bar.

本発明に係る叩打式螺旋杭は、杭本体の先端側に螺旋形状の線材から成る螺旋部を備えているので、叩打部をハンマー等で叩打したとき、螺旋部の線材には、曲げ方向及び捩れ方向の衝撃が加わり、線材の軸線方向以外の方向に振動が発生する。本発明に係る叩打式螺旋杭は、この螺旋部の振動を利用することにより、たとえ比較的に硬い地面に対しても、叩打部をハンマー等で叩打するだけで容易に打込み作業を行うことができる。しかも、一旦地面に打ち込まれれば、その螺旋部が地中で確りと保持されるので、例えば砂質土等の比較的に軟弱な地面や砕石敷きの地面においても優れた引抜き抵抗性を発揮する。 Since the tapping-type helical pile according to the present invention includes a spiral portion made of a helical wire rod on the tip side of the pile body, when the tapping portion is hit with a hammer or the like, the wire rod of the spiral portion is bent in the bending direction and A torsional impact is applied, and vibrations occur in directions other than the axial direction of the wire. The tapping-type spiral pile according to the present invention utilizes the vibration of the spiral portion, so that even relatively hard ground can be easily driven by simply tapping the tapping portion with a hammer or the like. can. Moreover, once it is driven into the ground, the spiral portion is firmly held in the ground, so that it exhibits excellent pull-out resistance even on relatively soft ground such as sandy soil or ground with crushed stone. .

本実施形態の叩打式螺旋杭の正面図である。It is a front view of the tapping-type spiral pile of this embodiment. 本実施形態の叩打式螺旋杭の右側面図である。It is a right view of the tapping-type spiral pile of this embodiment. 本実施形態の叩打式螺旋杭の左側面図である。It is a left view of the tapping-type spiral pile of this embodiment. 本実施形態の叩打式螺旋杭の平面図である。It is a top view of the tapping-type spiral pile of this embodiment. 本実施形態の叩打式螺旋杭の底面図である。It is a bottom view of the tapping-type spiral pile of this embodiment. 本実施形態の叩打式螺旋杭の打ち込み作業時の説明図である。It is explanatory drawing at the time of driving work of the tapping-type spiral pile of this embodiment. 本実施形態の叩打式螺旋杭の打ち込み作業時の部分拡大説明図である。It is a partial expansion explanatory view at the time of driving work of the tapping-type spiral pile of this embodiment.

図１～図５に示すように、本実施形態の叩打式螺旋杭１０は、地面に打ち込まれる杭本体１と、杭本体１の基端部に設けられ、ハンマー等により叩打される叩打部２と、同じく杭本体１の基端部に設けられ、防草シート等のシート材を押えるためのシート押え部３とから構成されている。 As shown in FIGS. 1 to 5, the tapping type spiral pile 10 of the present embodiment includes a pile body 1 driven into the ground, and a tapping portion 2 provided at the base end of the pile body 1 and tapped with a hammer or the like. and a sheet pressing portion 3 which is similarly provided at the base end portion of the pile body 1 and for pressing a sheet material such as a weed control sheet.

杭本体１は、その先端側に、螺旋形状の線材４１のみから成る螺旋部４を備えると共に、その基端側には、直線形状の線材５１から成る直線部５を備えている。螺旋部４の線材４１と直線部５の線材５１とは、中間部６の線材６１を介して連続しており、直線部５の線材５１は、螺旋部４の螺旋軸線Ａ線上に位置している一方、螺旋部４の線材４１は、螺旋部４の螺旋軸線Ａ上から外れて位置している。また、螺旋部４の線材４１の先端には、先細部４２が形成されている。 The pile body 1 has a helical portion 4 made of only a helical wire rod 41 on its tip side, and a straight portion 5 made of a straight wire rod 51 on its base end side. The wire rod 41 of the spiral portion 4 and the wire rod 51 of the straight portion 5 are continuous via the wire rod 61 of the intermediate portion 6 , and the wire rod 51 of the straight portion 5 is positioned on the spiral axis line A of the spiral portion 4 . On the other hand, the wire rod 41 of the spiral portion 4 is located off the spiral axis A of the spiral portion 4 . A tapered portion 42 is formed at the tip of the wire rod 41 of the spiral portion 4 .

本実施形態では、線材４１、５１、６１として、直径１０ｍｍの異形棒鋼を使用しており、所定長の異形棒鋼を部分的に螺旋状に曲げ加工することにより螺旋部４を形成している。そして、図１に示すように、螺旋部４における線材４１の軸線方向Ｂと、螺旋部４の螺旋軸線Ａに対し直角な平面Ｐとが成す、線材４１の捩れ角θを５０度とし、螺旋部４における線材４１の巻き数を約１．２５回としている。杭本体１の全長は約３５０ｍｍである。 In this embodiment, deformed steel bars with a diameter of 10 mm are used as the wires 41, 51, and 61, and the spiral portion 4 is formed by partially spirally bending deformed steel bars of a predetermined length. Then, as shown in FIG. 1, the torsion angle θ of the wire rod 41 formed by the axial direction B of the wire rod 41 in the spiral portion 4 and the plane P perpendicular to the spiral axis A of the spiral portion 4 is set to 50 degrees. The number of turns of the wire rod 41 in the portion 4 is about 1.25. The total length of the pile body 1 is approximately 350 mm.

叩打部２及びシート押え部３は、直線部５の線材５１に対して直角を成し、線材５１と連続する直線形状の線材２１により形成されている。本実施形態では、異形棒鋼から成る直線部５の線材５１の基端側を直角に曲げ加工することにより叩打部２及びシート押え部３を形成している。つまり、線材２１の上面（杭本体１の基端側の面）が叩打部２とされ、線材２１の下面（杭本体１の先端側の面）がシート押え部３とされており、線材２１によって、叩打部２及びシート押え部３が一体に形成されている。 The tapping portion 2 and the sheet pressing portion 3 are formed by a linear wire rod 21 that forms a right angle with the wire rod 51 of the straight portion 5 and is continuous with the wire rod 51 . In this embodiment, the tapping portion 2 and the sheet pressing portion 3 are formed by bending the base end side of the wire rod 51 of the straight portion 5 made of deformed bar steel at right angles. That is, the upper surface of the wire rod 21 (the surface on the base end side of the pile body 1) is the tapping portion 2, and the lower surface of the wire rod 21 (the surface on the tip side of the pile body 1) is the sheet pressing portion 3. Thus, the tapping portion 2 and the sheet pressing portion 3 are integrally formed.

なお、本実施形態の叩打式螺旋杭１０は、上述したように杭本体１、叩打部２及びシート押え部３が全て、一本の異形棒鋼を曲げ加工して形成され、これら杭本体１、叩打部２及びシート押え部３を構成する線材２１、４１、５１、６１の表面には線材の軸線方向に沿う二列の縦リブと、線材の周方向に沿う多数の横リブとを備えているが、図１～図７においては、これら縦リブ及び横リブの図示を省略している。 In the tapping-type spiral pile 10 of the present embodiment, as described above, the pile body 1, the tapping portion 2, and the sheet pressing portion 3 are all formed by bending a single deformed steel bar. The surfaces of the wire rods 21, 41, 51, 61 constituting the tapping portion 2 and the sheet holding portion 3 are provided with two rows of vertical ribs along the axial direction of the wire rods and a large number of horizontal ribs along the circumferential direction of the wire rods. However, in FIGS. 1 to 7, illustration of these vertical ribs and horizontal ribs is omitted.

次に、図６及び図７を参照しながら、本実施形態の叩打式螺旋杭１０の打込み作業について説明する。 Next, the driving operation of the tapping-type spiral pile 10 of the present embodiment will be described with reference to FIGS. 6 and 7. FIG.

まず、地面Ｇ上に予め敷設したシート材Ｓの上面の所定位置に、手で支えるなどして本実施形態の叩打式螺旋杭１０を立て、その状態で叩打部２をハンマー等で叩打する。この叩打によって、先細部４２が地面Ｇに突き刺さり、そして、螺旋部４が地中へ進入するに従って、杭本体１が自ら回転しながら徐々に地中に打ち込まれてゆく（図６参照）。そして、この叩打を繰り返すことにより杭本体１のほぼ全体を地中に打ち込めば、シート押え部３によってシート材Ｓが押えられ、シート材Ｓが地面Ｇ上に固定される。 First, the tapping-type spiral pile 10 of the present embodiment is erected at a predetermined position on the upper surface of the sheet material S laid in advance on the ground G, and the tapping part 2 is hit with a hammer or the like in that state. This tapping causes the tapered portion 42 to pierce the ground G, and as the spiral portion 4 penetrates into the ground, the pile body 1 rotates and is gradually driven into the ground (see FIG. 6). By repeating this tapping, almost the whole pile body 1 is driven into the ground, and the sheet material S is pressed by the sheet pressing part 3, and the sheet material S is fixed on the ground G.例文帳に追加

本実施形態の叩打式螺旋杭１０は、杭本体１の先端側に螺旋形状の線材４１から成る螺旋部４を備えているので、叩打部２をハンマー等で叩打したとき、螺旋部４の線材４１には、その曲げ方向及び捩れ方向の衝撃が加わり、軸線方向Ｂ以外の方向に振動が生じる。この振動によって、螺旋部４の線材４１はその進入路を拡げるようにしながら地中を進むことになる。そして、図７に示すように、螺旋部４の先端が例えば小石Ｒ等に当たるなどしてその進入抵抗を受けたときほど、螺旋部４の振動が大きくなるため、本実施形態の叩打式螺旋杭１０によれば、比較的に硬い地面に対しても容易に打込み作業を行うことができる。 Since the tapping-type spiral pile 10 of this embodiment includes the spiral portion 4 made of a spiral wire rod 41 on the tip side of the pile body 1, when the tapping portion 2 is tapped with a hammer or the like, the wire rod of the spiral portion 4 Vibration occurs in directions other than the axial direction B due to the bending and twisting impacts applied to 41 . Due to this vibration, the wire rod 41 of the spiral portion 4 advances through the ground while widening its approach path. Then, as shown in FIG. 7, the vibration of the spiral portion 4 increases as the tip of the spiral portion 4 hits, for example, a pebble R or the like and receives the entry resistance, so that the tapping type spiral pile of this embodiment According to 10, driving work can be easily performed even on relatively hard ground.

しかも、本実施形態の叩打式螺旋杭１０は、一旦地面に打ち込まれれば、その螺旋部４が地中で確りと保持されるので、例えば砂質土等の比較的に軟弱な地面や砕石敷きの地面においても優れた引抜き抵抗性を発揮する。 Moreover, once the tapping-type spiral pile 10 of this embodiment is driven into the ground, the spiral portion 4 is firmly held in the ground. It exhibits excellent pull-out resistance even on rough ground.

なお、本実施形態の叩打式螺旋杭１０は、螺旋部４の線材４１の捩れ角θを５０度としているが、本発明における捩れ角θの範囲は、４５～８０度である。捩れ角θが、４５度未満であると、螺旋部４の線材４１の軸線方向Ｂ以外の方向への振動が生じ易くなるが、軸線方向Ｂへの進入力が小さくなり過ぎ、却って、その打込み作業性が低下してしまう。他方、捩れ角θが８０度を超えると、螺旋部４の線材４１の軸線方向Ｂへの進入力は大きくなるが、線材４１の軸線方向Ｂ以外の方向への振動が生じ難くなり、また、螺旋部４の巻き径が小さくなるため、その引抜き抵抗性が低下してしまう。この捩れ角θは、螺旋部４の線材４１の材質、直径、表面形状等に応じて適宜、設定することができるが、その打込み作業性と引抜き抵抗性とのバランスの観点から、５０～７０度が好ましい。 In the tapping type spiral pile 10 of the present embodiment, the twist angle θ of the wire 41 of the spiral portion 4 is 50 degrees, but the range of the twist angle θ in the present invention is 45 to 80 degrees. If the torsion angle θ is less than 45 degrees, the wire rod 41 of the helical portion 4 is likely to vibrate in directions other than the axial direction B. Workability is reduced. On the other hand, when the torsion angle θ exceeds 80 degrees, although the input force of the wire rod 41 of the helical portion 4 in the axial direction B increases, the vibration of the wire rod 41 in directions other than the axial direction B becomes difficult to occur. Since the winding diameter of the helical portion 4 is reduced, the pull-out resistance of the helical portion 4 is lowered. This twist angle θ can be appropriately set according to the material, diameter, surface shape, etc. of the wire rod 41 of the helical portion 4. degree is preferred.

また、本実施形態の叩打式螺旋杭１０は、螺旋部４の線材４１の巻き数を、１．２５回としているが、本発明における巻き数の範囲は、１～２回である。巻き数が１回未満であると、螺旋部４の線材４１が地中へ螺旋進入し難くなって打込み作業性が低下し、また、引抜き抵抗性も低下してしまう。他方、巻き数が２回を越えると、引抜き抵抗性は向上するが、軸線方向Ｂ以外の方向に振動する螺旋部４の線材４１の線長が大きくなる結果、螺旋部４の先端における線材４１の軸線方向Ｂへの進入力が小さくなり過ぎ、その打込み作業性が低下してしまう。この線材４１の巻き数についても、線材４１の材質、直径、表面形状等に応じて適宜、設定することができる。 In the tapping type spiral pile 10 of the present embodiment, the number of turns of the wire 41 of the spiral portion 4 is 1.25, but the range of the number of turns in the present invention is 1 to 2. If the number of turns is less than 1, it becomes difficult for the wire 41 of the helical portion 4 to spirally enter the ground, resulting in a decrease in driving workability and pull-out resistance. On the other hand, if the number of turns exceeds 2, the pull-out resistance is improved, but the wire length of the wire rod 41 of the spiral portion 4 vibrating in directions other than the axial direction B increases. The driving force in the axial direction B becomes too small, and the driving workability is deteriorated. The number of turns of the wire 41 can also be appropriately set according to the material, diameter, surface shape, and the like of the wire 41 .

さらに、本実施形態の叩打式螺旋杭１０は、螺旋部４が異形棒鋼を曲げ加工して形成されているので、螺旋部４の線材４１の表面の存在する縦リブ及び横リブによって、その引抜き抵抗性をより向上させることができる。そして、叩打時に螺旋部４の線材４１には軸線方向Ｂ以外の方向への振動が生じるので、これら縦リブ及び横リブにより打込み作業性が大きく低下する難点もない。 Furthermore, in the tapping-type spiral pile 10 of the present embodiment, the spiral portion 4 is formed by bending the deformed bar steel, so that the vertical ribs and lateral ribs present on the surface of the wire rod 41 of the spiral portion 4 can be pulled out. Resistance can be further improved. Further, since the wire rod 41 of the spiral portion 4 vibrates in directions other than the axial direction B when struck, there is no problem that the driving workability is greatly reduced by these vertical ribs and horizontal ribs.

以上、本実施形態の叩打式螺旋杭について説明したが、本発明は他の実施形態でも実施することができる。 As mentioned above, although the hammering-type spiral pile of this embodiment was demonstrated, this invention can be implemented also by other embodiment.

例えば、上記実施形態では、杭本体１の基端側に直線形状の線材５１から成る直線部５を備え、この直線部５の線材５１は螺旋部４の螺旋軸線Ａ上に位置しているが、本発明は決してこれに限定されるものではなく、直線部５の線材５１は、必ずしも螺旋部４の螺旋軸線Ａ上に位置していなくてもよい。また、杭本体１は、必ずしも直線部５を備えていなくてもよく、例えば、螺旋部４の線材４１の基端部に叩打部２及びシート押え部３を設けるようにしてもよい。 For example, in the above-described embodiment, the base end side of the pile body 1 is provided with the straight portion 5 composed of the straight wire 51, and the wire 51 of the straight portion 5 is positioned on the spiral axis A of the spiral portion 4. However, the present invention is by no means limited to this, and the wire rod 51 of the straight portion 5 does not necessarily have to be positioned on the spiral axis A of the spiral portion 4 . Also, the pile body 1 does not necessarily have the linear portion 5 . For example, the tapping portion 2 and the sheet holding portion 3 may be provided at the base end portion of the wire rod 41 of the spiral portion 4 .

また、上記実施形態では、杭本体１の基端部に叩打部２及びシート押え部３を一体に設けているが、叩打部２とシート押え部３とをそれぞれ別個に設けてもよい。例えば、杭本体１の直線部５の線材５１の基端部寄りの中途に鍔状のシート押え部３を設け、線材５１の基端部を叩打部２としてもよい。 Further, in the above embodiment, the tapping portion 2 and the sheet pressing portion 3 are provided integrally at the base end portion of the pile body 1, but the tapping portion 2 and the sheet pressing portion 3 may be provided separately. For example, a brim-shaped sheet pressing portion 3 may be provided in the middle of the linear portion 5 of the pile body 1 near the base end portion of the wire rod 51 , and the base end portion of the wire rod 51 may be used as the tapping portion 2 .

また、上記実施形態では、杭本体１、叩打部２及びシート押え部３を構成する線材として、表面に多数の縦リブ及び横リブとを備えた異形棒鋼を使用しているが、本発明は勿論これに限定されるものではなく、線材として、例えば丸鋼、角鋼、平鋼等を採用してもよい。 In addition, in the above-described embodiment, the deformed steel bar having a large number of vertical ribs and horizontal ribs on the surface is used as the wire material constituting the pile main body 1, the tapping part 2 and the sheet pressing part 3. However, the present invention Of course, it is not limited to this, and for example, a round bar, a square bar, a flat bar, or the like may be used as the wire rod.

本発明は、その他、その趣旨を逸脱しない範囲内で、当業者の知識に基づいて種々の改良、修正、変形を加えた態様で実施し得るものである。また、同一の作用又は効果が生じる範囲内でいずれかの発明特定事項を他の技術に置換した形態で実施してもよく、また、一体に構成されている発明特定事項を複数の部材から構成したり、複数の部材から構成されている発明特定事項を一体に構成した形態で実施してもよい。 The present invention can also be implemented in various forms with various improvements, modifications, and variations based on the knowledge of those skilled in the art without departing from the spirit of the present invention. In addition, any of the matters specifying the invention may be replaced with other techniques within the scope of producing the same action or effect, and the integrally configured matters specifying the invention may be constructed from a plurality of members. Alternatively, the matters specifying the invention, which are composed of a plurality of members, may be implemented in a form integrally configured.

１０ 叩打式螺旋杭
１ 杭本体
２ 叩打部
３ シート押え部
４ 螺旋部
４１（螺旋部の）線材
５ 直線部
５１（直線部の）線材
６ 中間部
６１（中間部の）線材
Ａ（螺旋部の）螺旋軸線
Ｂ（螺旋部の線材の）軸線方向
Ｐ 螺旋軸線に対し直角な平面
θ（螺旋部の線材の）捩れ角 10 Tapping type spiral pile 1 Pile body 2 Tapping part 3 Sheet holding part 4 Spiral part 41 (spiral part) wire 5 Straight part 51 (straight part) wire 6 Intermediate part 61 (intermediate part) wire A (spiral part ) Helix axis B (of the wire of the helix) Axial direction P Plane perpendicular to the helix axis θ (of the wire of the helix) twist angle

Claims (3)

螺旋形状の線材のみから成る螺旋部を少なくとも先端側に有する杭本体と、
前記杭本体の基端部に設けられた叩打部と、
前記杭本体の基端側に設けられたシート押え部と、
を備えており、
前記螺旋部の前記線材は、当該螺旋部の螺旋軸線上から外れて位置し、
前記螺旋部における前記線材の軸線方向と前記螺旋部の螺旋軸線に対し直角な平面とが成す前記線材の捩れ角が４５～８０度であり、
前記螺旋部における前記線材の巻き数が１～２回であることを特徴とした叩打式螺旋杭。 spiral wire rodonlyA pile body having a spiral portion at least on the tip side, which consists of
a tapping portion provided at the base end portion of the pile body;
a sheet pressing portion provided on the base end side of the pile body;
and
the wire rod of the helical portion is positioned off the helical axis of the helical portion;
A twist angle of the wire formed by the axial direction of the wire in the spiral portion and a plane perpendicular to the spiral axis of the spiral portion is 45 to 80 degrees,
A tapping-type spiral pile characterized in that the number of turns of the wire in the spiral portion is 1 to 2. 前記杭本体の基端側に直線形状の線材から成る直線部を備えており、
前記直線部の基端部に前記叩打部が設けられていることを特徴とした請求項１に記載の叩打式螺旋杭。 A straight portion made of a straight wire is provided on the base end side of the pile body,
The tapping-type spiral pile according to claim 1 , wherein the tapping portion is provided at the base end portion of the straight portion. 前記螺旋部が異形棒鋼を曲げ加工して形成されている請求項１または請求項２に記載の叩打式螺旋杭。
The hammering type helical pile according to claim 1 or 2, wherein the helical portion is formed by bending a deformed steel bar.
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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002143967A (en) 2000-11-08 2002-05-21 Hiraoka Metal Ind Co Ltd Method to sharpen tip of round steel
JP2002146786A (en) 2000-11-08 2002-05-22 Hiraoka Metal Ind Co Ltd Method for producing round steel spiral
WO2007055559A1 (en) 2005-11-14 2007-05-18 Tian Yan Kam Stapler for anchoring articles to ground
JP3175873U (en) 2012-03-14 2012-06-07 巌 末藤 Sheet metal fittings laid around when growing fruit trees or vegetables
JP2013039054A (en) 2011-08-12 2013-02-28 East Japan Railway Co Screw pile, method for driving the same, and construction method of weed-proof sheet
JP2013124497A (en) 2011-12-15 2013-06-24 Okasan Livic Co Ltd Reinforcement material coupling device
JP3191590U (en) 2014-04-01 2014-07-03 有限会社久保辰鋼材 Spiral pile and its driving connector
JP6035664B1 (en) 2016-06-28 2016-11-30 株式会社中島機械 Rotating driven sheet material presser pile
JP2017524085A (en) 2014-08-06 2017-08-24 グリップル・リミテッドＧｒｉｐｐｌｅ Ｌｉｍｉｔｅｄ Ground anchor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0213614A (en) * 1988-06-28 1990-01-18 Kubota Ltd Screwing device of screw pile
JPH11350478A (en) * 1998-06-10 1999-12-21 Hiraoka Metal Ind Co Ltd Spiral anchor

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002143967A (en) 2000-11-08 2002-05-21 Hiraoka Metal Ind Co Ltd Method to sharpen tip of round steel
JP2002146786A (en) 2000-11-08 2002-05-22 Hiraoka Metal Ind Co Ltd Method for producing round steel spiral
WO2007055559A1 (en) 2005-11-14 2007-05-18 Tian Yan Kam Stapler for anchoring articles to ground
JP2013039054A (en) 2011-08-12 2013-02-28 East Japan Railway Co Screw pile, method for driving the same, and construction method of weed-proof sheet
JP2013124497A (en) 2011-12-15 2013-06-24 Okasan Livic Co Ltd Reinforcement material coupling device
JP3175873U (en) 2012-03-14 2012-06-07 巌 末藤 Sheet metal fittings laid around when growing fruit trees or vegetables
JP3191590U (en) 2014-04-01 2014-07-03 有限会社久保辰鋼材 Spiral pile and its driving connector
JP2017524085A (en) 2014-08-06 2017-08-24 グリップル・リミテッドＧｒｉｐｐｌｅ Ｌｉｍｉｔｅｄ Ground anchor
JP6035664B1 (en) 2016-06-28 2016-11-30 株式会社中島機械 Rotating driven sheet material presser pile

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