JPS62146323A - Structure of tip of non-circular pile - Google Patents
Structure of tip of non-circular pileInfo
- Publication number
- JPS62146323A JPS62146323A JP28441985A JP28441985A JPS62146323A JP S62146323 A JPS62146323 A JP S62146323A JP 28441985 A JP28441985 A JP 28441985A JP 28441985 A JP28441985 A JP 28441985A JP S62146323 A JPS62146323 A JP S62146323A
- Authority
- JP
- Japan
- Prior art keywords
- pile
- excavation
- ring
- tip
- vibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明はＨ型鋼や多角形杭等の非円形杭を直接地中に回
転させて建込む、非円形の杭体の先端部の構造に関する
ものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to the structure of the tip of a non-circular pile body such as an H-shaped steel or a polygonal pile, which is installed by rotating it directly into the ground. It is something.
く本発明の目的〉
本発明は、掘削性に優れ効率良く杭体を地中に建込める
、非円形の杭体の先端部の構造を提供することを目的と
する。OBJECTS OF THE INVENTION An object of the present invention is to provide a structure for the tip of a non-circular pile body that has excellent excavability and can be efficiently erected underground.
く本発明の構成〉
以下、図面を参照しながら本発明の一実施例について説
明する。Configuration of the Present Invention> An embodiment of the present invention will be described below with reference to the drawings.
くイ〉非円形杭の説明
本発明は、非円形の杭体く以下「杭１」という）の先端
に掘削刃を設け、この杭１の基端に回転力を与えて掘削
させながら直接地中に建込む、杭体の建込み技術に関す
るものである。(ii) Description of non-circular pile The present invention provides a digging blade at the tip of a non-circular pile body (hereinafter referred to as "pile 1"), and applies rotational force to the base end of the pile 1 to excavate it while directly digging into the ground. This is related to the construction technology of the pile bodies to be built inside.
く口〉杭の先端部の構造
本実施例ではＨ型鋼からなる杭１を建込む場合について
説明する。In this embodiment, a case will be explained in which a pile 1 made of H-shaped steel is erected.
杭１先端は第１図に示すように、掘削手段と杭の横撮れ
防止手段と、流体吐出手段を装備する。As shown in FIG. 1, the tip of the pile 1 is equipped with an excavation means, a means for preventing sideways photographing of the pile, and a fluid discharge means.
また、杭１のフランジ１２間等には、ねじれに対抗する
ためのスチフナー（補強材）を取り付ける場合もある。Further, a stiffener (reinforcing material) may be attached between the flanges 12 of the pile 1 to prevent twisting.
く口〉掘削手段 杭１の先端には掘削手段を装備させる。Excavation means The tip of the pile 1 is equipped with a digging means.
掘削手段としては例えば、第２図に示すように杭１の下
端のフランジ１２とリブ１３とを鋭角に切り落として先
鋭に形成する。As shown in FIG. 2, the excavation means is, for example, formed by cutting off the flange 12 and rib 13 at the lower end of the pile 1 at an acute angle.
［掘削刃］
そして、先鋭に形成されたフランジ１２とリブ１３の間
には、２組みの掘削刃２．３を溶接等で固定する。[Drilling Blade] Two sets of digging blades 2.3 are fixed by welding or the like between the sharply formed flange 12 and the rib 13.
掘削刃２．３は三角形の板体の一辺に鋸状の刃を刻設し
て形成し、鋸状の刃の部分を杭１の回転方向に向けて取
り付ける。The digging blade 2.3 is formed by carving a serrated blade on one side of a triangular plate, and is attached with the serrated blade part facing the rotation direction of the pile 1.
再掘削刃２．３の刃は、第３図に示すように杭１を回転
させたとき１枚目の掘削刃２の谷部が通過して残った土
砂を２枚目の掘削刃３の山部が通過して削り取るという
ように、再掘削刃２．３の谷部と山部とが相互に補完し
合って掘削するように形成する。As shown in Fig. 3, the blades of the re-excavation blades 2.3 pass through the valleys of the first excavation blade 2 when the pile 1 is rotated, and the remaining earth and sand are removed by the second excavation blade 3. The troughs and crests of the re-excavation blade 2.3 are formed so that they complement each other and excavate, such that the ridges pass through and scrape off.
また、杭１先端のフランジ面１２には抜き穴１４を複数
開設する。Further, a plurality of punch holes 14 are provided in the flange surface 12 at the tip of the pile 1.
この抜き穴１４は、後述するように掘削土砂にその他の
流体（水、エアー、モルタル、ソイルコンクリート等）
が混合した混合土砂等を通過させて、杭１の回転抵抗の
減少を目的として開設した孔である。As will be described later, this hole 14 allows other fluids (water, air, mortar, soil concrete, etc.) to be added to the excavated earth and sand.
This hole was opened for the purpose of reducing the rotational resistance of the pile 1 by allowing mixed soil and the like to pass through.
また、杭１下部のリブ１３面には吐出孔１５を開設する
。In addition, a discharge hole 15 is provided on the surface of the rib 13 at the bottom of the pile 1.
くハ〉横振れ防止手段
杭１の外周には環状の振止めリング４を複数外装して取
り付ける。(c) Lateral vibration prevention means A plurality of annular vibration prevention rings 4 are attached to the outer periphery of the pile 1.
振止めリング４は、杭１の回転中心と振止めリング４の
中心とを一致させて内接する径を有する環体である。The anti-sway ring 4 is an annular body having a diameter that aligns and inscribes the center of rotation of the pile 1 and the center of the anti-sway ring 4.
杭１の下部にも振止めリング４を外装する。The lower part of the pile 1 is also covered with a steadying ring 4.
この振止めリング４の下面にはリングビット４１を突設
する。A ring bit 41 is provided protruding from the lower surface of the steadying ring 4.
く二〉流体の吐出手段
杭１にはベントナイト液、圧力水、エアー、各種コンク
リート等を供給するためのホース５を全長にわたって取
り付ける。(2) Fluid discharge means A hose 5 for supplying bentonite liquid, pressure water, air, various types of concrete, etc. is attached to the pile 1 along its entire length.
ホース５の下端開口は、吐出孔１５の中心に位置させ、
リブ１３で仕切られた両空間域に各種流体を吐出できる
よう取り付ける。The lower end opening of the hose 5 is located at the center of the discharge hole 15,
It is attached so that various fluids can be discharged into both spatial areas partitioned by ribs 13.
また、ホース５の途上に着脱式の接続具を介在させて、
杭１の建込みを終了したら接続具の上部のホース５を回
収することも可能である。In addition, a removable connector is interposed in the middle of the hose 5,
Once the pile 1 has been erected, it is also possible to recover the hose 5 on the top of the connector.
この接続具としては、地上から容易に離脱操作できる公
知の離脱式の接続具を使用できる。As this connector, a known removable connector that can be easily removed from the ground can be used.
次に掘削方法について説明する。Next, the excavation method will be explained.
（１）杭の建込み
抗１の頭部をオーガ装置６のチャック部６１に把持させ
、杭１に回転を与えながら掘削を開始する。(1) The head of the pile pit 1 is gripped by the chuck part 61 of the auger device 6, and excavation is started while giving rotation to the pile 1.
掘削に際して、ホース５からベントナイト液７を吐出さ
せる。During excavation, bentonite liquid 7 is discharged from hose 5.
杭１の回転範囲（回転面）に存在する土砂は、掘削軌跡
が補完し合うよう取り付けた再掘削刃２．３によって効
率良く掘削される。Earth and sand existing in the rotation range (rotation plane) of the pile 1 is efficiently excavated by the re-excavation blades 2.3 attached so that the excavation trajectories complement each other.
また、その外周域はリングビット４１によって掘削され
る。Further, the outer peripheral area is excavated by a ring bit 41.
掘削されて流動化した土砂は、杭１の回転によってリブ
１３面とフランジ１２面との面に押し付けられる。The excavated and fluidized earth and sand is pressed against the surfaces of the rib 13 and the flange 12 by the rotation of the pile 1.
押し付けられた土砂は抜き穴１４を通って杭１の外部に
放出される。The pressed earth and sand is discharged to the outside of the pile 1 through the hole 14.
従って、掘削された土砂が杭１の回転の障害となること
もな（、ベントナイト液７等と共に孔外へ排出されるー
。Therefore, the excavated earth and sand will not interfere with the rotation of the pile 1 (and will be discharged out of the hole together with the bentonite liquid 7, etc.).
また一般に非円形の杭を回転させると横振れを発生する
心配がある。Additionally, there is generally a concern that lateral vibration will occur when non-circular piles are rotated.
ところが、非円形の杭１の外周に振止めリング４を外装
したことによって横振れを確実に規制できる。However, by covering the outer periphery of the non-circular pile 1 with the anti-sway ring 4, the lateral vibration can be reliably controlled.
従って、杭１は真直ぐに建込まれる。Therefore, the pile 1 is erected straight.
杭１の掘削によって開設された孔の孔壁は、ベントナイ
ト液７によって崩壊が防止される。The hole wall of the hole opened by excavating the pile 1 is prevented from collapsing by the bentonite liquid 7.
（２）杭の完成
杭１を延長して所定の深さまで建込みしたらオーガ装置
６の運転を停止し、チャック部６１から杭１の把持を開
放して建込み作業を終了する。(2) Completion of the pile Once the pile 1 is extended and erected to a predetermined depth, the operation of the auger device 6 is stopped, and the grip on the pile 1 is released from the chuck part 61 to complete the erecting work.
く本発明の効果〉
本発明は以上説明したようになるから、次のような効果
を得ることができる。Effects of the Present Invention> Since the present invention is as explained above, the following effects can be obtained.
（イ）既存の杭の先端部を多少加工するだけで、従来工
法のようにプレポーリングエを不要として杭を直接建込
みできる。(b) By simply modifying the tips of existing piles to some extent, the piles can be directly erected, eliminating the need for pre-poling as in conventional construction methods.
従って、工期を大幅に短縮できる。Therefore, the construction period can be significantly shortened.
（ロ）杭の先端に取り付ける掘削刃を、相互に掘削残し
ができないように補完し合う形状に形成して取り付けた
。(b) The digging blades attached to the tips of the piles were formed in shapes that complemented each other so that no excavation was left behind.
さらに杭の横振れを防止するための撮止めリングにもビ
ットを取り付けたことにより、掘削性がより向上する。Furthermore, by attaching a bit to the stop ring that prevents the pile from swinging laterally, excavation performance is further improved.
くハ）杭を回転させて建込むので、打撃音や震動等は発
生しない。(c) Since the piles are rotated and erected, there will be no impact noise or vibrations.
従って、静粛な住宅地における工事にも採用することが
でき、騒音公害の心配がまったくない。Therefore, it can be used for construction work in quiet residential areas, and there is no need to worry about noise pollution.
（ニ）Ｈ型鋼やボックス型鋼、非円形の各種の杭を使用
できるうえに、基礎杭や山留め杭等各種の工事に採用で
き、汎用性が広い。(d) Not only can H-shaped steel, box-shaped steel, and various non-circular piles be used, it can also be used in various types of construction such as foundation piles and mountain retaining piles, making it highly versatile.
（ホ）掘削されて流動化した土砂は、杭に開設された抜
き穴を透過するので、杭の回転抵抗を減少することがで
きる。(e) Since the excavated and fluidized earth and sand passes through the holes made in the pile, the rotational resistance of the pile can be reduced.
（へ）ホースの途上に着脱式の接続具を介在すると、杭
の建込み終了後に接続具の上位のホースを回収して再使
用が可能である。(f) If a removable connector is inserted in the middle of the hose, the hose above the connector can be recovered and reused after the pile has been erected.
第１図：杭の先端部の説明図 第２図：杭の建込み時の説明図 第３図：掘削刃の説明図 Figure 1: Explanatory diagram of the tip of the pile Figure 2: Explanatory diagram when erecting piles Figure 3: Explanation diagram of excavation blade
Claims (1)
非円形の杭体の先端部の構造。 ａ、杭の回転面内の土砂を掘削する掘削手段。 ｂ、杭体に円環状の振止めリングを外装した横振れ防止
手段。 ｃ、杭体の先端部から掘削面に向けて流体を吐出する流
体吐出手段。[Claims] A structure of a non-circular pile for rotary excavation, the tip of the pile being equipped with at least the following means. a. Excavation means for excavating earth and sand within the rotating plane of the pile. b. Lateral vibration prevention means in which the pile body is covered with an annular steadying ring. c. Fluid discharge means for discharging fluid from the tip of the pile body toward the excavation surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28441985A JPS62146323A (en) | 1985-12-19 | 1985-12-19 | Structure of tip of non-circular pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28441985A JPS62146323A (en) | 1985-12-19 | 1985-12-19 | Structure of tip of non-circular pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62146323A true JPS62146323A (en) | 1987-06-30 |
| JPH0542528B2 JPH0542528B2 (en) | 1993-06-28 |
Family
ID=17678311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28441985A Granted JPS62146323A (en) | 1985-12-19 | 1985-12-19 | Structure of tip of non-circular pile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62146323A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019206868A (en) * | 2018-05-30 | 2019-12-05 | 株式会社フジタ | Micro pile construction method and insertion member for filling grout material used in micro pile construction method |
-
1985
- 1985-12-19 JP JP28441985A patent/JPS62146323A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019206868A (en) * | 2018-05-30 | 2019-12-05 | 株式会社フジタ | Micro pile construction method and insertion member for filling grout material used in micro pile construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0542528B2 (en) | 1993-06-28 |
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