JP3042154U - Steel pipe pile fittings - Google Patents
Steel pipe pile fittingsInfo
- Publication number
- JP3042154U JP3042154U JP1997002491U JP249197U JP3042154U JP 3042154 U JP3042154 U JP 3042154U JP 1997002491 U JP1997002491 U JP 1997002491U JP 249197 U JP249197 U JP 249197U JP 3042154 U JP3042154 U JP 3042154U
- Authority
- JP
- Japan
- Prior art keywords
- pile
- joint
- steel pipe
- yatco
- pipe pile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
(57)【要約】
【課題】杭を地中に沈下する際に、杭頭が杭施工装置の
作動範囲より低くなった時に、ヤットコを用いて施工す
る必要があるが、ヤットコを容易に杭頭に係合させるこ
とができる鋼管杭の継手を提供する。
【解決手段】雌ねじと、この雌ねじの下方に隣接し上杭
の下端筒体外周を案内する内面案内円筒と、内面案内円
筒の下端内向きに突設した複数の突起とを備え、この突
起は雌ねじの内径に遊嵌する外径を持ち杭を軸まわりに
回転させるヤットコに係合するように形成した、鋼管杭
の継手である。
(57) [Abstract] [Problem] When sinking a pile into the ground, when the pile head is lower than the operating range of the pile construction device, it is necessary to construct with a yatco, but the yatco is easily piled. Provided is a steel pipe pile joint that can be engaged with a head. SOLUTION: The internal thread includes an internal thread, an inner guide cylinder that is adjacent to the lower side of the internal thread and that guides the outer circumference of the lower end cylinder of the upper pile, and a plurality of protrusions that project inward from the lower end of the inner guide cylinder. A joint for a steel pipe pile, which has an outer diameter loosely fitted to the inner diameter of an internal thread and is formed so as to engage with a yatco that rotates the pile around an axis.
Description
【0001】[0001]
本考案は、土木建築分野の鋼管杭に関する技術であって、例えば杭を地中に沈 下させるヤットコ(雇い杭、杭頭を沈下施工する時杭上方に継ぎ足して用いる補 助仮杭)を用いる鋼管杭の継手に関する。 The present invention is a technology relating to steel pipe piles in the field of civil engineering and construction, and uses, for example, Yatco (employed piles, auxiliary temporary piles that are added to piles above piles when sinking pile heads). Steel pipe pile joints.
【0002】[0002]
一般に杭は、打撃又は衝撃により地中に貫入させるもの、圧入又は振動により 地下に進入させるもの、中堀等により沈下させるもの、回転により推進させるも の、あるいはアースオーガ等により掘削したボーリング孔中に挿入するもの等、 種々のものがある。 Generally, piles are those that penetrate into the ground by impact or impact, those that enter underground by press-fitting or vibration, those that sink by an internal moat, those that are propelled by rotation, or those that are drilled by earth augers, etc. There are various things to insert.
【0003】 また、杭にはコンクリート杭、鋼管杭等があり、鋼管杭は、施工場所の条件に 応じて例えば直径200〜600mm程度、長さ数十mにも及ぶものがあり、軽 量で強度が高く接続が容易であるなどの優れた特性を有する。このような鋼管杭 は、施工現場において接続して用いることが容易である。 従来、一般に、鋼管杭の継手には、突き合わせ溶接継手、スリーブを用いる溶 接継手、ねじ継手、フランジ継手等が用いられている。溶接継手は、溶接施工に 長時間を要すると共に、熟練溶接作業員の確保が困難になりつつあり、またX線 検査等を必要とする問題がある。テーパねじは、上杭と下杭の芯合わせが容易で なく、上下杭の精度の高い慎重なセッチングを要し、施工不良となり易い等、現 場作業に困難性が多い。フランジ継手は、外径が大きくなる問題がある。Further, there are concrete piles, steel pipe piles, etc. as the piles, and there are steel pipe piles having a diameter of, for example, about 200 to 600 mm and a length of several tens of meters depending on the conditions of the construction site. It has excellent characteristics such as high strength and easy connection. Such steel pipe piles are easy to connect and use at the construction site. Conventionally, butt welded joints, welded joints using sleeves, screw joints, flange joints, etc. have generally been used for joints of steel pipe piles. Welded joints have problems that it takes a long time for welding work, it is becoming difficult to secure skilled welding workers, and X-ray inspection is required. Tapered screws are not easy to align the upper and lower piles, require precise and careful setting of the upper and lower piles, and are prone to poor construction. The flange joint has a problem that the outer diameter becomes large.
【0004】 本出願人はこれらの欠点を改善した、案内部を有する多条ねじ継手を開発して いる。この継手は、鋼管杭端に設けた互いに螺合する雄ねじと雌ねじとからなり 、ねじは平行ねじの3条以上の多条ねじとし、雄ねじの先端にねじ底径を外径と し先端に軸直角面を備えた円筒状案内部を設け、雄ねじの後端に雄ねじの外径よ り大きい外周座を備え、雌ねじ側には前記軸直角面に密着する内周座を設け、雌 ねじ先端部には前記外周座との間に止水ゴムリングを介装するシール部を形成し た鋼管杭の接合継手である。この継手は上下杭の迅速正確な心合わせができ、現 場施工性に優れたものである。The applicant has developed a multi-threaded threaded joint having a guide portion, in which these drawbacks are remedied. This joint consists of male and female threads that are screwed together at the end of the steel pipe pile and are multi-threaded threads with three or more parallel threads, with the bottom of the male thread as the outer diameter and the shaft at the tip. A cylindrical guide with a right-angled surface is provided, an outer peripheral seat that is larger than the outer diameter of the male thread is provided at the rear end of the male thread, and an inner peripheral seat that closely contacts the axis-perpendicular surface is provided on the female screw side. Is a joint joint for steel pipe piles, in which a seal portion is formed between the outer peripheral seat and a waterproof rubber ring. This joint enables quick and accurate centering of the upper and lower piles, and has excellent workability in the field.
【0005】[0005]
杭を地中に沈下する際に、杭頭が杭施工装置の作動範囲より低くなった時に、 ヤットコを用いて施工する必要がある。本考案の目的は、このヤットコを容易に 杭頭に係合させることができる鋼管杭の継手を提供することである。 特に本考案は、上記多条ねじ継手を用いる杭を地中に回転沈下させる場合であ ってヤットコを用いて杭を施工する際に、特に好適な鋼管杭の継手を提供するも のである。 When sinking a pile into the ground, when the pile head falls below the operating range of the pile construction equipment, it is necessary to construct it using Yatco. An object of the present invention is to provide a steel pipe pile joint in which this yatco can be easily engaged with the pile head. In particular, the present invention provides a particularly suitable steel pipe pile joint when the pile using the above-mentioned multi-thread screw joint is rotationally sinked into the ground and the pile is constructed using Yatco.
【0006】[0006]
本考案は、上記問題点を解決するために開発されたもので、上杭下端の雄ねじ と螺合する雌ねじと、雌ねじの下方に隣接し上杭の下端筒体外周を案内する内面 案内円筒と、杭を軸まわりに回転させるヤットコに係合し内面案内円筒の下端に 内向きに突設した複数の突起とを備えたことを特徴とする鋼管杭の継手を提供す る。この継手は下杭の上端に取付けられるものである。 The present invention was developed to solve the above-mentioned problems, and includes an internal thread that is screwed to the external thread at the lower end of the upper pile, and an inner guide cylinder that is adjacent to the internal thread and that guides the outer circumference of the lower end cylinder of the upper pile. Provided is a joint for a steel pipe pile, comprising: a plurality of projections that engage with a yatco that rotates the pile around an axis and that are provided at the lower end of an inner surface guiding cylinder so as to project inward. This joint is attached to the upper end of the lower pile.
【0007】 前記ヤットコとしては、前記雌ねじの内径に遊嵌する外径を持つ円筒体を備え 、この円筒体の下端に前記突起に係止する鈎状切欠を備え、容易に杭頭に装着す ることができるようにするとよい。また、前記ヤットコ及び前記突起は、杭を軸 回りに正回転又は逆回転させる両方向の係合部を有することとし、杭の沈下及び 引き上げの両方に用いることができるようにすると好適である。The YATCO includes a cylindrical body having an outer diameter that loosely fits into the inner diameter of the female screw, and a hook-shaped notch that engages with the protrusion is provided at the lower end of the cylindrical body so that it can be easily mounted on a pile head. You should be able to do so. Further, it is preferable that the yatco and the protrusion have engaging portions in both directions for rotating the pile forward or backward about the axis so that it can be used for both sinking and pulling up the pile.
【0008】[0008]
以下図面を参照して本考案の実施の形態を詳細に説明する。図1は本考案の実 施例の鋼管杭の継手の部分縦断面図、図2は横断面図である。この継手20は鋼 管杭110の上端に取付けられている。そして、その内周に雌ねじ21を備え、 その下方に案内内筒面22を備えている。雌ねじ21は多条ねじでテーパを有し ない平行ねじである。雄ねじ11と雌ねじ21とは、上述のようにテーパを持た ない平行ねじに形成してあり、かつ3条以上の多条ねじとなっている。平行ねじ は、テーパねじに比べて低トルクで接合することができる。また、多条ねじは、 1回転する時の軸方向のリードがねじピッチの多条倍となる。従って迅速なねじ 込みができる。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a partial vertical sectional view of a joint of a steel pipe pile according to an embodiment of the present invention, and FIG. 2 is a horizontal sectional view. The joint 20 is attached to the upper end of the steel pipe pile 110. An internal thread 21 is provided on the inner periphery of the internal thread 21, and a guide inner cylindrical surface 22 is provided below the internal thread 21. The internal thread 21 is a parallel thread which is a multiple thread and has no taper. The male thread 11 and the female thread 21 are formed as parallel threads having no taper as described above, and are multi-thread threads having three or more threads. Parallel threads can be joined with lower torque than taper threads. Also, in the case of a multi-thread screw, the lead in the axial direction when it makes one rotation is a multiple number of times the thread pitch. Therefore, quick screwing is possible.
【0009】 案内内筒20は雌ねじ21の内径と一致する円筒状をなしている。図4はこの 継手を上杭の継手10と結合した時の縦断面図を示したものである。上杭100 の下端の継手10は雄ねじ11とその下方に案内外筒面12とを備え、下杭の上 端の継手20とねじ結合する。この継手を結合する時、下杭の上方に上杭をほぼ 心合わせして下げてくると、案内外筒面12が雌ねじ21、案内内筒面22に案 内されて自動的に中心が合い、雄ねじと雌ねじとがかみ合うようになる。ついで 上杭を旋回させながらねじ11、21を螺合させると上下杭を容易に結合するこ とができる。The inner guide tube 20 has a cylindrical shape that matches the inner diameter of the female screw 21. FIG. 4 shows a vertical cross-sectional view when this joint is connected to the joint 10 of the upper pile. The joint 10 at the lower end of the upper pile 100 includes a male screw 11 and a guide outer cylindrical surface 12 below the male screw 11, and is screwed to the joint 20 at the upper end of the lower pile. When connecting this joint, if the upper pile is lowered almost above the lower pile, the guide outer cylindrical surface 12 is inserted into the female screw 21 and the guide inner cylindrical surface 22, and the centers are automatically aligned. , The male screw and the female screw will be engaged. Then, the upper and lower piles can be easily joined by screwing the screws 11 and 21 while turning the upper pile.
【0010】 そして、上杭を逆転させても上下の杭が抜け出さないように、セットボルト3 0を鋼管杭の下杭の継手20に設けたセットボルトねじ孔23にねじ込み、上杭 の継手10に設けた凹部13に係止させてセットする。 鋼管杭の下杭の上端の継手20は、案内内筒面22の下端部に突起24を内側 にむけて突出させてある。この突起24は、円周に複数個設けられており、図2 はその一例である。図3に、ヤットコ40の一例を示した。このヤットコ40は 、円筒形の筒状をなし、その外周は、継手20の内径にわずかな隙間を介して遊 嵌する円筒面44を備え、その下端に、継手20の突起24に係合する切欠41 、係合部42、43を備えている。この切欠41は、ヤットコ40の底面から上 方に切り上がった切欠で、この切欠41を通って突起24が係合部42、43に 係合することができるように、切欠41の幅は突起24の幅より大きく形成して ある。切欠41の軸方向上部に係合部42、43が円周方向に入り込む切欠部と して形成されている。この係合部42、43は、図3では左右に設けられている が、左又は右の一方でもよい。係合部42、43の軸方向隙間寸法は、突起24 の軸方向厚さ寸法より大きく、その奥部端面45、46は、突起24の円周方向 端面25、26と面接触するように形成されている。突起24が切欠41を通っ てその上方に入り込んだ時、ヤットコ40を軸回りに回転させると、係合部45 又は46と突起24とが係合し、ヤットコ40により鋼管杭を軸回りに回転させ ることができる。Then, the set bolt 30 is screwed into the set bolt screw hole 23 provided in the joint 20 of the lower pile of the steel pipe pile so that the upper and lower piles do not come out even when the upper pile is reversed. It is set by being locked in the concave portion 13 provided in. The joint 20 at the upper end of the lower pile of the steel pipe pile has a protrusion 24 projecting inward from the lower end of the guide inner cylindrical surface 22. A plurality of the protrusions 24 are provided on the circumference, and FIG. 2 is an example thereof. FIG. 3 shows an example of the Yatco 40. The yatco 40 has a cylindrical shape, and the outer periphery thereof is provided with a cylindrical surface 44 that is loosely fitted in the inner diameter of the joint 20 with a slight gap, and the lower end thereof engages with the protrusion 24 of the joint 20. The notch 41 and the engaging portions 42 and 43 are provided. The notch 41 is a notch that is cut upward from the bottom surface of the yatco 40, and the width of the notch 41 is such that the protrusion 24 can be engaged with the engaging portions 42 and 43 through the notch 41. It is formed larger than the width of 24. Engagement portions 42 and 43 are formed on the axially upper portion of the notch 41 as notches that enter the circumferential direction. Although the engaging portions 42 and 43 are provided on the left and right sides in FIG. 3, they may be provided on the left side or the right side. The axial clearance dimension of the engaging portions 42, 43 is larger than the axial thickness dimension of the projection 24, and the inner end surfaces 45, 46 thereof are formed so as to make surface contact with the circumferential end surfaces 25, 26 of the projection 24. Has been done. When the projection 24 enters above the cutout 41 and rotates the yatco 40 about its axis, the engagement portion 45 or 46 engages with the projection 24, and the yatco 40 rotates the steel pipe pile about its axis. It can be done.
【0011】 突起24は、図4に示すように、鋼管杭に上杭100の継手10を下杭の継手 20にねじ込んだ時、上杭の継手10の下端面が当接するストッパを兼用するこ とができる。このストッパは、雄ねじと雌ねじのかみ合いを適正にすると共に、 下杭の継手20の上端27にシールリング14を設けてシールする時、このシー ルリングを適切に圧縮してシールを確保する保持作用をなすものである。As shown in FIG. 4, the protrusion 24 also serves as a stopper with which the lower end surface of the joint 10 of the upper pile abuts when the joint 10 of the upper pile 100 is screwed into the joint 20 of the lower pile in the steel pipe pile. You can This stopper makes proper engagement between the male screw and the female screw, and when the seal ring 14 is provided on the upper end 27 of the joint 20 of the lower pile for sealing, the seal ring is appropriately compressed to have a holding action for ensuring the seal. It is an eggplant.
【0012】 通常の杭施工では、下杭の上端継手20に上杭の下端継手10を順次ねじ込み ながら鋼管杭を軸回りに回転させて最終杭長さまで施工すればよいが、最終杭の 場合に上杭を継ぎ足す必要はないが杭上端が回転装置の作動範囲より下方に下が った場合、又は杭施工途中で杭施工を中断し、杭上端を杭回転装置の回転施工範 囲より下方まで下げておき、再びこれを引き上げて上杭を継足しする場合等には 、ヤットコの使用が必要となる場合が生ずる。後者の場合、杭を沈下する方向と ともに引き上げる方向にもヤットコを使用する。In normal pile construction, the steel pipe pile may be rotated around the axis while sequentially screwing the lower joint 10 of the upper pile into the upper joint 20 of the lower pile to construct up to the final pile length. It is not necessary to add the upper pile, but if the upper end of the pile falls below the operating range of the rotating device, or if the pile construction is interrupted during pile construction, the upper end of the pile is below the rotating construction range of the pile rotating device. It may be necessary to use Yatco if it is lowered up to this point and then pulled up again to join the upper pile. In the latter case, Yatco is used both in the direction of sinking the pile and in the direction of pulling it up.
【0013】 本発明の継手はこのようなヤットコによる施工を必要とする時、ヤットコを直 接杭継手中に挿入し、ねじを痛めることなく、迅速に施工することができる。When the joint of the present invention requires such a construction with a yatco, the yatco can be inserted into the direct pile joint and the construction can be carried out quickly without damaging the screw.
【0014】[0014]
本考案によれば、ヤットコを用いて杭を施工する場合に、ねじ継手のねじに損 傷を与えなることなく、容易に、迅速に施工することができ、下杭の頭部を一時 施工を中断することもでき、次回の管接続等の施工が容易で、正確な杭打ちがで きるという効果を奏する。また、杭の逆転によっても継手部が抜け出さないよう にした杭では、杭の逆転引き上げも容易である。 According to the present invention, when a pile is constructed using Yatco, it can be easily and quickly constructed without damaging the screw of the threaded joint, and the head portion of the lower pile can be temporarily constructed. It can be interrupted, the next pipe connection, etc. can be easily constructed, and accurate pile driving can be performed. In addition, with a pile that prevents the joint from slipping out even when the pile is reversed, it is easy to reverse and pull up the pile.
【図1】実施例の鋼管杭の継手の縦断面図である。FIG. 1 is a vertical sectional view of a joint of a steel pipe pile according to an embodiment.
【図2】実施例の鋼管杭の継手の横断面図である。FIG. 2 is a cross-sectional view of the joint of the steel pipe pile of the embodiment.
【図3】実施例のヤットコの部分斜視図である。FIG. 3 is a partial perspective view of the yatco of the embodiment.
【図4】実施例の鋼管杭の継手の上下結合状態を示す縦
断面図である。FIG. 4 is a vertical cross-sectional view showing a vertically joined state of the joint of the steel pipe pile of the embodiment.
【符号の説明】 10 継手 11 雄ねじ 12 案内外筒面 13 凹部 14 シールリング 20 継手 21 雌ねじ 22 案内内筒面 23 セットボルトねじ孔 24 突起 25、26 突起の端面 27 上端 30 セットボルト 40 ヤットコ 41 切欠 42、43 係合部 44 外周面 45、46 奥部端面 100、110 鋼管杭[Explanation of Codes] 10 Joint 11 Male Thread 12 Guide Outer Cylinder Surface 13 Recess 14 Seal Ring 20 Joint 21 Female Thread 22 Guide Inner Cylinder Surface 23 Set Bolt Screw Hole 24 Protrusion 25, 26 Protrusion End Face 27 Upper End 30 Set Bolt 40 Yatco 41 Notch 42, 43 Engagement part 44 Outer peripheral surface 45, 46 Inner end surface 100, 110 Steel pipe pile
───────────────────────────────────────────────────── フロントページの続き (72)考案者 清水 正則 愛知県半田市川崎町1丁目1番地 川崎製 鉄株式会社 知多製造所内 (72)考案者 置田 孝一 愛知県半田市川崎町1丁目1番地 川崎製 鉄株式会社 知多製造所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Masanori Shimizu 1-1, Kawasaki-cho, Handa-shi, Aichi Kawasaki Steel Co., Ltd. Chita Works (72) Inventor, Koichi Okita 1-1-1, Kawasaki-cho, Handa-shi, Aichi Kawasaki Chita Works of Steel Manufacturing Co., Ltd.
Claims (3)
雌ねじの下方に隣接し上杭の下端筒体外周を案内する内
面案内円筒と、杭を軸まわりに回転させるヤットコに係
合し内面案内円筒の下端に内向きに突設した複数の突起
とを備えたことを特徴とする鋼管杭の継手。1. A female screw which is screwed with a male screw at the lower end of the upper pile,
An inner guide cylinder that is adjacent to the lower side of the female screw and guides the outer circumference of the lower end cylinder of the upper pile, and a plurality of protrusions that are engaged in a yatco that rotates the pile about the axis and that protrudes inward at the lower end of the inner guide cylinder. A steel pipe pile joint characterized by being provided.
する外径を持つ円筒体を備え、該円筒体の下端に前記突
起に係止する鈎状切欠を備えたこと特徴とする請求項1
記載の鋼管杭の継手。2. The yatco includes a cylindrical body having an outer diameter that fits loosely into the inner diameter of the female screw, and a hook-shaped notch that engages with the protrusion is provided at a lower end of the cylindrical body.
Joint for steel pipe pile as described.
りに正回転又は逆回転させる両方向の係合部を有するこ
とを特徴とする請求項1又は2記載の鋼管杭の継手。3. The joint for a steel pipe pile according to claim 1, wherein the yatco and the protrusion have engaging portions in both directions that rotate the pile forward or backward about an axis.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP1997002491U JP3042154U (en) | 1997-04-04 | 1997-04-04 | Steel pipe pile fittings |
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JP1997002491U JP3042154U (en) | 1997-04-04 | 1997-04-04 | Steel pipe pile fittings |
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JP3042154U true JP3042154U (en) | 1997-10-14 |
Family
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Cited By (1)
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JP2019065525A (en) * | 2017-09-29 | 2019-04-25 | 株式会社クボタ | Follower |
-
1997
- 1997-04-04 JP JP1997002491U patent/JP3042154U/en not_active Expired - Lifetime
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JP2019065525A (en) * | 2017-09-29 | 2019-04-25 | 株式会社クボタ | Follower |
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