JP2013147814A - Steel pipe pile for excavation - Google Patents

Steel pipe pile for excavation Download PDF

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JP2013147814A
JP2013147814A JP2012007746A JP2012007746A JP2013147814A JP 2013147814 A JP2013147814 A JP 2013147814A JP 2012007746 A JP2012007746 A JP 2012007746A JP 2012007746 A JP2012007746 A JP 2012007746A JP 2013147814 A JP2013147814 A JP 2013147814A
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steel pipe
opening
pipe pile
excavation
closing member
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JP5819736B2 (en
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Toru Matsuoka
徹 松岡
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Giken Seisakusho Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a simple and economical steel pipe pile for excavation, to be used when installing the steel pipe pile at a part with an obstacle such as an existing revetment or a footing foundation.SOLUTION: A steel pipe pile 1 for excavation includes a cutting blade 2 at a distal end, and has an opening/closing member 3 to be opened roughly in a semicylindrical shape from the distal end. To be concrete, an opening 4 roughly in the semicylindrical shape is formed at the distal end of the steel pipe pile 1 for excavation, and the opening 4 is provided with the opening/closing member 3 detachably or by a single hinge structure or a slide type joint structure. Also, a cutting blade 2 is provided also on the distal end of the opening/closing member 3.

Description

本発明は、既設護岸やフーチング基礎などの障害物がある箇所に鋼管杭列を構築する際などに用いられる掘削用鋼管杭に関する。   The present invention relates to a steel pipe pile for excavation that is used when a steel pipe pile row is constructed at a location where there is an obstacle such as an existing revetment or a footing foundation.

一般に、既設護岸などの障害物がある箇所に鋼管杭を打設する場合、全周回転式オールケーシング掘削機を用い、ビット付きケーシングチューブを回転圧入しながら、ケーシング内部をハンマーグラブやアースオーガ等で削孔し、置換材を投入した後、鋼管杭を打設する方法が用いられている。
しかし、装置が大がかりとなるばかりか、作業が煩雑で、例えば人家が密集する都市部の河川改修などでは大型機械を搬入、組み立てて設置する作業ヤードの確保が困難な上、騒音・振動の問題などから作業自体が困難になるといった課題があった。 In general, when placing steel pipe piles in places where there are obstacles such as existing revetments, use a full-rotation all-casing excavator to rotate and press the casing tube with a bit into the casing with a hammer grab or earth auger. A method of drilling a steel pipe pile after drilling and introducing a replacement material is used.
However, not only is the equipment large, but the work is cumbersome.For example, it is difficult to secure a work yard for loading, assembling and installing large machines when renovating urban rivers where people are crowded. As a result, there is a problem that the work itself becomes difficult.

これに対し、特許文献１において、鋼管杭を回転圧入できる鋼管杭圧入装置を用いて既設護岸に鋼管杭列を構築し、この鋼管杭列から反力を得ながら掘削用鋼管杭を圧入して既設護岸に所定の深さの穴を掘削し、その後、掘削用鋼管杭を引き抜いて穴の中に鋼管杭を圧入して連続壁を構築する護岸の構築方法が提案されている。
この場合、構築した鋼管杭列から反力を取って圧入により新たな杭列を構築するのであるから、騒音・振動の問題もなく、狭隘な場所での施工が可能である。 On the other hand, in Patent Document 1, a steel pipe pile row is constructed on the existing revetment using a steel pipe pile press-in device that can press-fit the steel pipe pile, and the steel pipe pile for excavation is press-fitted while obtaining a reaction force from the steel pipe pile row. A revetment construction method has been proposed in which a hole having a predetermined depth is excavated in an existing revetment, and then a steel pipe pile is pulled out and the steel pipe pile is pressed into the hole to construct a continuous wall.
In this case, the reaction force is taken from the constructed steel pipe pile row, and a new pile row is constructed by press-fitting, so that construction in a narrow place is possible without problems of noise and vibration.

特許第４１０５０７６号（特開２００５−１３３３４８号）公報Japanese Patent No. 4105076 (Japanese Patent Laid-Open No. 2005-133348)

しかしながら、特許文献１の方法では、掘削用鋼管杭の内部にコンクリート塊や岩塊が閉塞した場合、その閉塞したコンクリート塊や岩塊はコンクリート破砕機やレッグドリルなどで破砕して除去しなければ鋼管杭を再利用はできず、これらの破砕には手間と費用を要し、また、破砕時には騒音・振動が発生するといった問題が危惧される。   However, in the method of Patent Document 1, when a concrete lump or rock blockage is blocked inside the excavating steel pipe pile, the blocked concrete lump or rock block must be removed by crushing with a concrete crusher or a leg drill. Steel pipe piles cannot be reused, and their crushing requires labor and expense, and there are concerns that noise and vibration may occur during crushing.

本発明の課題は、既設護岸やフーチング基礎などの障害物がある箇所に鋼管杭を打設する際に用いる簡便で経済的な掘削用鋼管杭を提供することである。   An object of the present invention is to provide a simple and economical steel pipe pile for excavation that is used when placing a steel pipe pile in a place where there is an obstacle such as an existing revetment or a footing foundation.

以上の課題を解決するため、請求項１に記載の発明は、
先端に切削刃を備える掘削用鋼管杭であって、
先端から略半円筒状に開口する開閉部材を備えることを特徴とする。 In order to solve the above problems, the invention described in claim 1
A steel pipe pile for excavation with a cutting blade at the tip,
An opening / closing member that opens in a substantially semi-cylindrical shape from the tip is provided.

請求項２に記載の発明は、
請求項１に記載の掘削用鋼管杭であって、
先端に略半円筒状の開口部が形成され、
前記開口部に対し前記開閉部材が着脱可能または片ヒンジ構造もしくはスライド式継手構造により備えられることを特徴とする。 The invention described in claim 2
A steel pipe pile for excavation according to claim 1,
A substantially semi-cylindrical opening is formed at the tip,
The opening / closing member is detachably attached to the opening, or is provided with a single hinge structure or a sliding joint structure.

請求項３に記載の発明は、
請求項１または２に記載の掘削用鋼管杭であって、
前記開閉部材の先端にも前記切削刃が備えられることを特徴とする。 The invention according to claim 3
A steel pipe pile for excavation according to claim 1 or 2,
The cutting blade is also provided at the tip of the opening / closing member.

本発明によれば、既設護岸やフーチング基礎などの障害物がある箇所に鋼管杭を打設する場合、管内に閉塞したコンクリート塊や岩塊の破砕のための作業時間と騒音の発生をなくすことができるので、都市部など限られた作業空間の中でも効率よく鋼管杭の打設が可能である。   According to the present invention, when steel pipe piles are placed in places where there are obstacles such as existing revetments and footing foundations, the work time and noise generation for crushing concrete blocks and rock blocks blocked in the pipes are eliminated. Therefore, steel pipe piles can be driven efficiently even in limited work spaces such as urban areas.

本発明を適用した掘削用鋼管杭の一実施形態の構成を示す先端側部分の斜視 図で、ボルトの取り外しを示した図である。It is the perspective view of the front end side part which shows the structure of one Embodiment of the steel pipe pile for excavation to which this invention is applied, and is the figure which showed removal of the volt | bolt. 図１の開閉部材の取り外し方の一例を示した図である。It is the figure which showed an example of how to remove the opening-and-closing member of FIG. 図２の杭先端からコンクリート塊を撤去する一例を示した図である。It is the figure which showed an example which removes a concrete lump from the pile front-end | tip of FIG. 図３の杭先端に開閉部材を取り付ける一例を示した図である。It is the figure which showed an example which attaches an opening-and-closing member to the pile front-end | tip of FIG. 図４の杭先端に開閉部材をボルトで取り付ける例を示した図である。It is the figure which showed the example which attaches an opening-and-closing member with a volt | bolt at the pile tip of FIG.

以下、図を参照して本発明を実施するための形態を詳細に説明する。
（実施形態）
図１は本発明を適用した掘削用鋼管杭１の一実施形態の構成を示すもので、図示のように、掘削用鋼管杭１の先端には切削刃２が備えられるとともに、その先端から略半円筒状をなす開閉部材３が備えられている。 DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
(Embodiment)
FIG. 1 shows a configuration of an embodiment of a steel pipe pile 1 for excavation to which the present invention is applied. As shown in the figure, a cutting blade 2 is provided at the tip of the steel pipe pile 1 for excavation, and from the tip thereof, An opening / closing member 3 having a semi-cylindrical shape is provided.

すなわち、掘削用鋼管杭１には、図２から図４に示すように、先端から略半円筒状の開口部４が形成されていて、この開口部４の周囲に鋼管外周面を一段低くした取付面５が形成されている。   That is, as shown in FIGS. 2 to 4, the excavating steel pipe pile 1 is formed with a substantially semi-cylindrical opening 4 from the tip, and the outer peripheral surface of the steel pipe is lowered one step around the opening 4. A mounting surface 5 is formed.

そして、開閉部材３は、開口部４及び取付面５を覆う形状に形成されていて、先端に切削刃２が備えられている。
この開閉部材３には、取付面５に対応する部分に沿って複数の取付穴３１が形成されている。 And the opening / closing member 3 is formed in the shape which covers the opening part 4 and the attachment surface 5, and the cutting blade 2 is provided in the front-end | tip.
A plurality of mounting holes 31 are formed in the opening / closing member 3 along a portion corresponding to the mounting surface 5.

また、取付面５には、開閉部材３を重ねた状態で取付穴３１と対応する位置に複数の ネジ穴５１が形成されている。   In addition, a plurality of screw holes 51 are formed on the attachment surface 5 at positions corresponding to the attachment holes 31 in a state where the opening / closing member 3 is overlapped.

開閉部材３は、開口部４及び取付面５を覆う状態に重ねて、取付穴３１からボルトＢをネジ穴５１に締め込むことで、掘削用鋼管杭１に一体化される。   The opening / closing member 3 is integrated with the excavating steel pipe pile 1 by overlapping the opening 4 and the mounting surface 5 and tightening the bolt B from the mounting hole 31 into the screw hole 51.

以上の掘削用鋼管杭１は、既設護岸やフーチング基礎などの障害物がある箇所に先行杭として用いられる。   The excavation steel pipe pile 1 is used as a leading pile at a location where there is an obstacle such as an existing revetment or footing foundation.

そして、掘削用鋼管杭１を打設する工程において、その掘削用鋼管杭１の内部にコンクリート塊Ｃや岩塊が閉塞した場合には、掘削用鋼管杭１を地上に引き上げて、以下の手順により鋼管内部を閉塞したコンクリート塊や岩塊を撤去する。   And, in the process of placing the excavating steel pipe pile 1, when the concrete lump C or rock blockages inside the excavating steel pipe pile 1, the excavating steel pipe pile 1 is pulled up to the ground, and the following procedure is performed. The concrete block and the rock block which closed the inside of a steel pipe are removed.

「施工手順」
１）まず、図１に示すように、掘削用鋼管杭１と略半円筒状をなす開閉部材３を接合しているボルトＢを取り外す。
２）次に、図２に示すように、略半円筒状の開閉部材３に玉掛けを行い、開閉部材３を取り外す。
３）次に、略半円筒状の開口部４からコンクリート塊Ｃを引き出して、図３に示すように、円柱状のコンクリート塊Ｃに玉掛けを行い、コンクリート塊Ｃを撤去する。
４）その後、図４に示すように、再び玉掛けにより開閉部材３を掘削用鋼管杭１に取り付ける。
５）そして、図５に示すように、ボルトＢを用いて、掘削用鋼管杭１と開閉部材３を接合する。 "Construction Procedure"
1) First, as shown in FIG. 1, the bolt B joining the excavating steel pipe pile 1 and the opening / closing member 3 having a substantially semi-cylindrical shape is removed.
2) Next, as shown in FIG. 2, the substantially semi-cylindrical opening / closing member 3 is slung and the opening / closing member 3 is removed.
3) Next, the concrete block C is pulled out from the substantially semi-cylindrical opening 4, and the columnar concrete block C is slung as shown in FIG. 3, and the concrete block C is removed.
4) Then, as shown in FIG. 4, the opening-and-closing member 3 is again attached to the excavation steel pipe pile 1 by slinging.
5) Then, as shown in FIG. 5, the excavating steel pipe pile 1 and the opening / closing member 3 are joined using the bolt B.

その後、再び掘削する。   Then drill again.

以上、実施形態の掘削用鋼管杭１によれば、開閉部材３で先端から略半円筒状に開口部４が開口することにより、鋼管内部に閉塞したコンクリート塊Ｃを細かく破砕することなく容易に撤去でき、手間がかからず、よって経済的である。
また、開閉部材３により開口部４を閉じることで、掘削用鋼管杭１として再利用が容易である。 As mentioned above, according to the steel pipe pile 1 for excavation of embodiment, the opening part 4 opens in the substantially semi-cylindrical shape from the front-end | tip by the opening-and-closing member 3, and it is easy, without crushing the concrete lump C obstruct | occluded inside the steel pipe. It can be removed, hassle-free, and is economical.
Moreover, the opening part 4 is closed by the opening / closing member 3, so that it can be easily reused as the steel pipe pile 1 for excavation.

従って、既設護岸やフーチング基礎などの障害物がある箇所に掘削用鋼管杭１を打設する場合において、管内に閉塞したコンクリート塊や岩塊の破砕のための作業時間と騒音の発生をなくすことができるため、都市部など限られた作業空間の中でも効率よく鋼管杭を打設することができる。   Therefore, when the excavation steel pipe pile 1 is placed in a place where there are obstacles such as existing revetments and footing foundations, the work time and noise generation for crushing concrete blocks and rock blocks blocked in the pipes are eliminated. Therefore, steel pipe piles can be driven efficiently even in limited work spaces such as urban areas.

（変形例）
以上の実施形態においては、開閉部材をボルト止めとしたが、本発明はこれに限定されるものではなく、開閉部材は開口部に対しボルトやコッターなどの係止部材で片ヒンジ構造として備えてもよい。
また、開閉部材の両側端と鋼管杭開口部の両側部とを、鋼矢板の嵌合継手状としてスライド式の継手構造としてもよい。
さらに、実施形態では、コンクリート塊の撤去を説明したが、同様に岩塊の撤去も行える。
また、開口部及びその開閉部材の形状等も任意であり、その他、具体的な細部構造等についても適宜に変更可能であることは勿論である。 (Modification)
In the above embodiment, the opening / closing member is bolted, but the present invention is not limited to this, and the opening / closing member is provided as a single hinge structure with a locking member such as a bolt or a cotter with respect to the opening. Also good.
Moreover, it is good also as a sliding joint structure as the fitting joint shape of a steel sheet pile to the both ends of an opening-and-closing member and the both sides of a steel pipe pile opening part.
Further, in the embodiment, the removal of the concrete block has been described, but the rock block can also be removed in the same manner.
Also, the shape of the opening and the opening / closing member thereof is arbitrary, and it is needless to say that other specific detailed structures can be appropriately changed.

１ 鋼管杭
２ 切削刃
３ 開閉部材
３１ 取付穴
４ 開口部
５ 取付面
５１ ネジ穴
Ｂ ボルト
Ｃ コンクリート塊 DESCRIPTION OF SYMBOLS 1 Steel pipe pile 2 Cutting blade 3 Opening and closing member 31 Mounting hole 4 Opening part 5 Mounting surface 51 Screw hole B Bolt C Concrete lump

Claims (3)

先端に切削刃を備える掘削用鋼管杭であって、
先端から略半円筒状に開口する開閉部材を備えることを特徴とする掘削用鋼管杭。 A steel pipe pile for excavation with a cutting blade at the tip,
A steel pipe pile for excavation, comprising an opening and closing member that opens in a substantially semi-cylindrical shape from the tip. 先端に略半円筒状の開口部が形成され、
前記開口部に対し前記開閉部材が着脱可能または片ヒンジ構造もしくはスライド式継手構造により備えられることを特徴とする請求項１に記載の掘削用鋼管杭。 A substantially semi-cylindrical opening is formed at the tip,
The steel pipe pile for excavation according to claim 1, wherein the opening / closing member is detachably attached to the opening, or is provided by a single hinge structure or a sliding joint structure. 前記開閉部材の先端にも前記切削刃が備えられることを特徴とする請求項１または２に記載の掘削用鋼管杭。   The steel pipe pile for excavation according to claim 1 or 2, wherein the cutting blade is also provided at a tip of the opening / closing member.
JP2012007746A 2012-01-18 2012-01-18 Steel pipe pile for excavation Active JP5819736B2 (en)

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
JP2020172741A (en) * 2019-04-08 2020-10-22 金属工具株式会社 Casing protection bit
JP2020172841A (en) * 2019-10-03 2020-10-22 金属工具株式会社 Casing protection bit
JP2021099007A (en) * 2019-12-24 2021-07-01 Ｊｆｅスチール株式会社 Steel pipe, steel pipe structure, and construction method of steel pipe structure

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020172741A (en) * 2019-04-08 2020-10-22 金属工具株式会社 Casing protection bit
US11891860B2 (en) 2019-04-08 2024-02-06 Metal Tool Inc. Casing protection bit
JP2020172841A (en) * 2019-10-03 2020-10-22 金属工具株式会社 Casing protection bit
JP7253244B2 (en) 2019-10-03 2023-04-06 金属工具株式会社 casing protection bit
JP2021099007A (en) * 2019-12-24 2021-07-01 Ｊｆｅスチール株式会社 Steel pipe, steel pipe structure, and construction method of steel pipe structure
JP7172978B2 (en) 2019-12-24 2022-11-16 Ｊｆｅスチール株式会社 Steel pipe, steel pipe structure, method for constructing steel pipe structure

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