JP2002348860A - Pile with blade - Google Patents
Pile with bladeInfo
- Publication number
- JP2002348860A JP2002348860A JP2001158954A JP2001158954A JP2002348860A JP 2002348860 A JP2002348860 A JP 2002348860A JP 2001158954 A JP2001158954 A JP 2001158954A JP 2001158954 A JP2001158954 A JP 2001158954A JP 2002348860 A JP2002348860 A JP 2002348860A
- Authority
- JP
- Japan
- Prior art keywords
- wing
- pile
- blade
- winged
- ground
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は翼付き杭に関する。The present invention relates to a winged pile.
【０００２】[0002]
【従来の技術及び課題】杭の支持力を大きくするなどの
目的で、杭本体に、側方に張り出す翼を、長手方向に間
隔をおいて複数備えさせた翼付き杭が提供されている。
本発明は、この種の翼付き杭において、その支持力をよ
り大きなものにできるようにすることを課題とする。2. Description of the Related Art There is provided a winged pile in which a plurality of wings extending laterally are provided on a pile main body at intervals in a longitudinal direction for the purpose of increasing the supporting force of the pile. .
An object of the present invention is to make it possible to increase the supporting force of this type of winged pile.
【０００３】[0003]
【課題を解決するための手段】上記の課題は、側方に張
り出す翼が杭本体にその長手方向に間隔をおいて複数備
えられた翼付き杭において、隣り合う上下の翼のうち、
上側の翼の地盤食込み角度が下側の翼の地盤食込み角度
よりも小であることを特徴とする翼付き杭によって解決
される。SUMMARY OF THE INVENTION The object of the present invention is to provide a winged pile in which a plurality of wings extending laterally are provided on a pile body at intervals in a longitudinal direction thereof, of the upper and lower wings adjacent to each other.
The problem is solved by a winged pile, wherein the ground penetration angle of the upper wing is smaller than the ground penetration angle of the lower wing.
【０００４】この翼付き杭では、上側の翼の地盤食込み
角度が下側の翼の地盤食込み角度よりも小であるから、
この杭を回転させながら地盤に打ち込んでいくと、上下
の翼間の土が圧縮され、その密度が大きくなる。これに
よって、杭本体外周面と土との摩擦力を大きくすること
ができ、しかも、上側の翼による支持力を大きくするこ
とができ、全体として杭の支持力を大きなものにするこ
とができる。In this winged pile, the ground penetration angle of the upper wing is smaller than the ground penetration angle of the lower wing.
When the pile is driven into the ground while rotating, the soil between the upper and lower wings is compressed and its density increases. As a result, the frictional force between the outer peripheral surface of the pile main body and the soil can be increased, and the supporting force of the upper wing can be increased, so that the supporting force of the pile as a whole can be increased.
【０００５】上側の翼のサイズが下側の翼のサイズより
も大である場合は、下側の翼よりも側方に張り出す部分
が、下側の翼で掘削していない部分によって下から支え
られるため支持力を大きくすることができるのみなら
ず、下側の翼よりも側方に張り出していない部分につい
ても、上下の翼間で圧縮され密度を大きくした土によっ
て支えられるため、上側の翼による杭の支持力を大きな
ものにすることができる。When the size of the upper wing is larger than the size of the lower wing, a portion projecting laterally from the lower wing is formed from below by a portion not excavated by the lower wing. Not only can the supporting force be increased because it is supported, but also the part that does not project laterally than the lower wing is supported by the soil that is compressed between the upper and lower wings and has increased density, The supporting force of the pile by the wing can be increased.
【０００６】[0006]
【発明の実施の形態】次に、本発明の実施形態を図面に
基づいて説明する。Next, embodiments of the present invention will be described with reference to the drawings.
【０００７】図１〜図３に示す翼付き杭１は鋼管杭から
なり、２は幹となる杭本体であり、この杭本体２の先端
部、即ち下端部には先端刃３が設けられると共に、杭本
体２の先端外周部には側方に張り出す第一の翼４が設け
られ、この第一翼４から上方に所定の距離離れて杭本体
２の外周部には同じく側方に張り出す第二の翼５が設け
られ、更に、この第二翼５から上方に所定の距離離れて
杭本体２の外周部には同じく側方に張り出す第三の翼６
が設けられている。The winged pile 1 shown in FIGS. 1 to 3 is made of a steel pipe pile, and 2 is a pile main body serving as a trunk. A first wing 4 is provided on an outer peripheral portion of the tip of the pile main body 2 so as to protrude laterally. A second wing 5 is provided on the outer periphery of the pile main body 2 at a predetermined distance upward from the second wing 5, and a third wing 6 projecting to the side is also provided.
Is provided.
【０００８】第一〜第三の各翼４，５，６は、図１
（ロ）（ハ）（ニ）に示すように、杭本体２の外周部を
半周程度にわたって延びる対の分割螺旋翼ａ，ｂによっ
て杭本体２の略全周にわたって延ばされた螺旋翼からな
っており、螺旋の傾斜角度、即ち地盤への食込み角度
は、図１（イ）に示すように、第一の翼４が最も大き
く、第二の翼５がそれよりも小さく、第三の翼６が第二
の翼５よりも更に小さく設定されている。Each of the first to third wings 4, 5, 6 is shown in FIG.
(B) As shown in (c) and (d), a pair of spiral wings a and b extending around the outer peripheral portion of the pile main body 2 over about a half circumference comprises a spiral wing extended over substantially the entire circumference of the pile main body 2. As shown in FIG. 1A, the inclination angle of the spiral, that is, the bite angle into the ground, is largest for the first wing 4, smaller for the second wing 5, and smaller for the third wing 5. 6 is set smaller than the second wing 5.
【０００９】そして、各翼４，５，６のサイズは、図１
（ロ）（ハ）（ニ）に示すように、第一の翼４が最も小
さく、第二の翼５がそれよりも大きく、第三の翼６が第
二の翼５よりも更に大きく設定されており、第二の翼５
が第一の翼４よりも大きく側方に張り出し、第三の翼６
が第二の翼５よりも更に大きく側方に張り出している。The sizes of the wings 4, 5, and 6 are as shown in FIG.
As shown in (b), (c) and (d), the first wing 4 is the smallest, the second wing 5 is larger, and the third wing 6 is larger than the second wing 5. The second wing 5
Flank more than the first wing 4 and the third wing 6
Flank the second wing 5 even more.
【００１０】上記の翼付き杭１では、図２に示すよう
に、これを回転させながら地盤７に圧入していくと、第
二の翼５の地盤食込み角度が第一の翼４の地盤食込み角
度より小さく設定されていることから、第一の翼４によ
ってその上方へと削り上げられていく土の量と、この土
が第二の翼５によって更にその上方に削り上げられてい
く土の量とでは、前者の方が大きく、そのため、第一の
翼４と第二の翼５との間に存在する土７ａが、これら第
一、第二の翼４，５によって圧縮され、密度を大きくし
ていく。そのため、杭打ちを完了した状態では、図３に
示すように、その部分の土７ａが杭本体２の外周面に強
く密接した状態となり、この部分の土７ａと杭本体２の
外周面との大きな摩擦力によって、杭１の支持力が大き
なものになる。また、第三の翼６の地盤食込み角度も第
二の翼５の地盤食込み角度より小さく設定されているこ
とから、同様に、第二の翼５と第三の翼６との間に存在
する部分の土７ｂについても、これら第二、第三の翼
５，６によって圧縮され、密度を大きくし、杭打ち完了
状態において、この部分の土７ｂが杭本体２の外周面に
強く密接した状態となり、杭本体２にはこの部分の土７
ｂによる摩擦力も加わって、杭１はより大きな支持力で
支持されることになる。In the above-mentioned winged pile 1, as shown in FIG. 2, when it is pressed into the ground 7 while being rotated, the ground digging angle of the second wing 5 becomes smaller than that of the first wing 4. Since the angle is set to be smaller than the angle, the amount of soil that is shaved upward by the first wing 4 and the amount of soil that is shaved further upward by the second wing 5 In terms of quantity, the former is larger, so that the soil 7a existing between the first wing 4 and the second wing 5 is compressed by these first and second wings 4, 5, and the density is reduced. Increase it. Therefore, in the state where the pile driving is completed, as shown in FIG. 3, the soil 7 a of that part is in a state of being in close contact with the outer peripheral surface of the pile main body 2, and the soil 7 a of this part and the outer peripheral surface of the pile main body 2 are Due to the large frictional force, the supporting force of the pile 1 becomes large. Further, since the ground digging angle of the third wing 6 is set smaller than the ground digging angle of the second wing 5, similarly, the third wing 6 exists between the second wing 5 and the third wing 6. The portion of the soil 7b is also compressed by the second and third wings 5 and 6 to increase the density, and the pile 7b of the portion is in strong contact with the outer peripheral surface of the pile body 2 in the completed pile driving state. And the pile body 2 has this soil 7
The pile 1 is supported by a larger supporting force due to the frictional force of b.
【００１１】しかも、このような周面摩擦による支持力
増加だけでなく、杭本体２の側方に張り出す翼のサイズ
は、第一４よりも第二５が大きく設定されていること
で、第二の翼５において、第一の翼４よりも側方に張り
出す部分５ａが、第一の翼４で掘削されていない地盤部
分７ｃによって下から支えられ、これが大きな支持力と
なるのみならず、第二の翼５において、第一の翼４より
も側方に張り出していない部分５ｂについては、上記の
ように、第一、第二の翼４，５間で圧縮され密度を大き
くした部分の土７ａによって下から支えられ、この支持
力によっても、第二の翼５による杭１の支持力が大きな
ものになる。また、第二の翼５の側方張出しサイズより
も第三の翼６の側方張出しサイズの方が大きく設定され
ているから、同様に、第三の翼６による杭１の支持力
も、張出し部６ａが掘削されない地盤部分７ｄで支えら
れると共に、非張出し部６ｂが圧縮高密部分の土７ｂで
支えられることで、大きなものにすることができる。In addition to the increase in the supporting force due to the peripheral friction, the size of the wing projecting to the side of the pile main body 2 is set to be larger than the first 4 in the second 5, In the second wing 5, a portion 5a projecting laterally from the first wing 4 is supported from below by a ground portion 7c that has not been excavated by the first wing 4, and this only provides a large supporting force. In the second wing 5, the portion 5b that does not project laterally than the first wing 4 is compressed between the first and second wings 4 and 5 to increase the density as described above. The portion 7a is supported from below by the soil 7a, and the supporting force of the pile 1 by the second wing 5 is also increased by this supporting force. Further, since the lateral overhang size of the third wing 6 is set to be larger than the lateral overhang size of the second wing 5, the supporting force of the pile 1 by the third wing 6 is similarly extended. The portion 6a is supported by the unexcavated ground portion 7d, and the non-overhanging portion 6b is supported by the compressed high-density portion of the soil 7b.
【００１２】もちろん、第一の翼４によって、その下の
地盤部分７ｅが圧密化され、高い支持力を得られるのは
いうまでもない。こうして、杭１を大きな支持力で支持
することができる。Of course, it goes without saying that the first wing 4 compacts the ground portion 7e therebelow, thereby obtaining a high supporting force. Thus, the pile 1 can be supported with a large supporting force.
【００１３】以上に、本発明の実施形態を示したが、本
発明はこれに限られるものではなく、発明思想を逸脱し
ない範囲で、各種の変更が可能である。例えば、上記の
実施形態では、翼として螺旋翼を用いた場合を示してい
るが、螺旋でなくともよく、要は、地盤に食い込んで、
翼下の土を翼上に削り上げていくことのできるような翼
であればよい。また、上記の実施形態では鋼管杭に適用
した場合を示しているが、Ｈ形鋼などを用いた形鋼杭に
適用されてもよいし、その他の各種の杭に適用すること
が可能である。また、第一〜第三の翼は、それらのサイ
ズ、即ち側方への張出しサイズが同じものからなってい
てもよい。また、上記の実施形態では、翼の数を３つと
しているが、２つであってもよいし、４つ以上であって
もよい。Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the above embodiment, the case where the spiral wing is used as the wing is shown, but the spiral wing may not be used.
Any wing that can scrape the soil under the wing onto the wing may be used. Further, in the above embodiment, the case where the present invention is applied to a steel pipe pile is shown. However, the present invention may be applied to a shaped steel pile using an H-section steel or the like, or can be applied to other various piles. . Further, the first to third wings may have the same size, that is, the same size of the overhang to the side. Further, in the above embodiment, the number of blades is three, but may be two or four or more.
【００１４】[0014]
【発明の効果】本発明は、以上のとおりのものであるか
ら、翼付き杭において、その支持力を大きなものにする
ことができる。According to the present invention as described above, the supporting force of a winged pile can be increased.
【図１】実施形態の翼付き杭を示すもので、図（イ）は
側面図、図（ロ）は図（イ）のＩ−Ｉ線断面矢視図、図
（ハ）は図（イ）のＩＩ−ＩＩ線断面矢視図、図（ニ）
は図（イ）のＩＩＩ−ＩＩＩ線断面矢視図である。BRIEF DESCRIPTION OF DRAWINGS FIG. 1 shows a winged pile according to an embodiment. FIG. 1A is a side view, FIG. 1B is a cross-sectional view taken along line II of FIG. 1A, and FIG. ) Is a sectional view taken along the line II-II of FIG.
FIG. 3 is a sectional view taken along the line III-III in FIG.
【図２】杭の打込みにより翼間の土が圧縮される様子を
示す断面側面図である。FIG. 2 is a cross-sectional side view showing a state in which soil between wings is compressed by driving of a pile.
【図３】杭の地盤打込み状態を示す断面側面図である。FIG. 3 is a cross-sectional side view illustrating a ground driving state of a pile.
１…杭 ２…杭本体 ４…第一の翼 ５…第二の翼 ６…第三の翼 ７…地盤 DESCRIPTION OF SYMBOLS 1 ... Pile 2 ... Pile main body 4 ... 1st wing 5 ... 2nd wing 6 ... 3rd wing 7 ... Ground
Claims (2)
向に間隔をおいて複数備えられた翼付き杭において、 隣り合う上下の翼のうち、上側の翼の地盤食込み角度が
下側の翼の地盤食込み角度よりも小であることを特徴と
する翼付き杭。1. A winged stake provided with a plurality of wings extending laterally at intervals in a longitudinal direction of a pile body, wherein an upper wing of a neighboring wing has a lower ground penetration angle. A winged pile characterized by being smaller than a ground bite angle of the wing.
ズよりも大である請求項１に記載の翼付き杭。2. The winged stake according to claim 1, wherein the size of the upper wing is larger than the size of the lower wing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001158954A JP2002348860A (en) | 2001-05-28 | 2001-05-28 | Pile with blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001158954A JP2002348860A (en) | 2001-05-28 | 2001-05-28 | Pile with blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002348860A true JP2002348860A (en) | 2002-12-04 |
Family
ID=19002610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001158954A Pending JP2002348860A (en) | 2001-05-28 | 2001-05-28 | Pile with blade |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002348860A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019132099A (en) * | 2018-02-02 | 2019-08-08 | 日本製鉄株式会社 | Slope reinforcement pile, slope reinforcement method and slope reinforcement pile construction method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56100925A (en) * | 1980-01-12 | 1981-08-13 | Hitachi Cable Ltd | Underground pile |
| JPH0542524B2 (en) * | 1985-07-26 | 1993-06-28 | Eijiro Kurahashi | |
| JPH07189249A (en) * | 1993-12-27 | 1995-07-28 | Chiyoda Koei Kk | Method of burying construction of inverted conical-shaped multi-blade steel pipe pile |
| JPH11247189A (en) * | 1998-03-03 | 1999-09-14 | Asahi Chem Ind Co Ltd | Spliced pile structure made of steel pipe |
-
2001
- 2001-05-28 JP JP2001158954A patent/JP2002348860A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56100925A (en) * | 1980-01-12 | 1981-08-13 | Hitachi Cable Ltd | Underground pile |
| JPH0542524B2 (en) * | 1985-07-26 | 1993-06-28 | Eijiro Kurahashi | |
| JPH07189249A (en) * | 1993-12-27 | 1995-07-28 | Chiyoda Koei Kk | Method of burying construction of inverted conical-shaped multi-blade steel pipe pile |
| JPH11247189A (en) * | 1998-03-03 | 1999-09-14 | Asahi Chem Ind Co Ltd | Spliced pile structure made of steel pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019132099A (en) * | 2018-02-02 | 2019-08-08 | 日本製鉄株式会社 | Slope reinforcement pile, slope reinforcement method and slope reinforcement pile construction method |
| JP7168328B2 (en) | 2018-02-02 | 2022-11-09 | 日鉄建材株式会社 | Slope reinforcement work and construction method of slope reinforcement work |
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