JP3801316B2 - H pile cutting method in the soil - Google Patents
H pile cutting method in the soil Download PDFInfo
- Publication number
- JP3801316B2 JP3801316B2 JP21991197A JP21991197A JP3801316B2 JP 3801316 B2 JP3801316 B2 JP 3801316B2 JP 21991197 A JP21991197 A JP 21991197A JP 21991197 A JP21991197 A JP 21991197A JP 3801316 B2 JP3801316 B2 JP 3801316B2
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- Prior art keywords
- shaped steel
- cutting
- casing
- soil
- pile
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Description
【０００１】
【発明の属する技術分野】
本発明は、工事基地として河川や運河上のスペースを有効利用するためにＨ形鋼杭を打設し桟橋を架設し、工事終了後、不要となったＨ形鋼杭を撤去するための土中のＨ杭切断工法に関する。
【０００２】
【従来の技術】
都市部におけるＨ杭の撤去作業は、騒音公害防止のため従来使用していた振動を利用したバイブロによる撤去作業は行われず、振動、騒音を伴わない引き抜き工法で行うのが主流となっている。
【０００３】
しかし前記引き抜き工法においては、引き抜き撤去するＨ杭周辺に、引き抜きに必要な大掛かりな反力設備を設けなければならなかった。
また、反力を必要としない工法としては、Ｈ杭周辺を掘削し、水中切断する方法がある。いずれの方法においても、経済的な施工ができず工事費が膨大になるという問題があった。
【０００４】
【発明が解決しようとする課題】
本発明は、上記従来の問題点を解決するためになされたもので、簡単な方法により、作業性のよい、安価な土中のＨ杭切断工法を提供することを目的とする。
【０００５】
【課題を解決するための手段】
土中に埋まったＨ形鋼杭を、無騒音、無振動で切断・撤去するための方法であって、下端部付近にジェット噴出孔を設け、所定間隔をあけて２本のケーシングをケーシング接続材で接続したメガネケーシングを、Ｈ形鋼杭のウェブを両側から挟むようにして、フランジ内に沿って圧入し、メガネケーシング内に切断装置を挿入し、ジェット噴出孔からウォータージェットを噴出させてＨ形鋼杭を切断することを特徴とする、土中のＨ杭切断工法である。
【０００６】
【発明の実施の形態】
以下図面を参照しながら本発明の実施形態について説明する。
【０００７】
＜イ＞全体構成
図１は本発明による土中のＨ杭切断工法の側断面図を示す。
本発明で使用する装置は、所定間隔をあけて一対のケーシング１、１をケーシング接続材で接続したメガネケーシング２と、既存の圧入装置３と、既存の切断装置４から構成されている。
【０００８】
＜ロ＞メガネケーシング
図２は、切断撤去するＨ形鋼杭５にメガネケーシング２を圧入した状態を示す正断面図であり、図３はその側断面図である。
メガネケーシング２は、所定間隔をあけた一対のケーシング１、１を、帯鋼等で加工したケーシング接続材６で固定したものである。
メガネケーシング２先端付近にはジェット噴出孔７が設けてあり、先端部は圧入し易くするため鋭角に先付けされている。
【０００９】
＜ハ＞圧入装置
図４は、メガネケーシング２上に載置した圧入装置３の側断面図である。
圧入装置３そのものは既存のものであり、メガネケーシング２天端に圧入装置３の圧入板８を載置し、切断撤去するＨ形鋼杭５に圧入装置３の定着ロッド９を溶接し、油圧ジャッキ１０の伸長により緊張ワイヤー１１を緊張させることによりメガネケーシング２を土中の所定深度まで圧入させるものである。
Ｈ形鋼杭５に溶接した定着ロッド９は、Ｈ形鋼杭５を切断後、圧入装置３と共にクレーンなどで引上げて撤去される。
【００１０】
＜ニ＞切断装置
図１に示すように、切断装置４は回転ロッド１２に連結され、メガネケーシング２内のジェット噴出孔７まで挿入される。
切断装置４はアブレイシブジェットノズル１３とノズル固定治具１４を備え、高圧噴射水によりＨ形鋼杭５を切断する。
【００１１】
【作用】
以下に、土中のＨ杭切断工法の作用を説明する。
【００１２】
＜イ＞メガネケーシングの圧入
図５は切断撤去するＨ形鋼杭５に沿ってメガネケーシング２を圧入した状態を示す平面図である。
メガネケーシング２はケーシング接続材６によりケーシング１、１を一体化しており、Ｈ形鋼杭５のウェブを挟んでフランジ間に設置後、前記圧入装置３（図４）により土中の所定深度まで圧入される。
【００１３】
＜ロ＞切断装置の挿入
図１に示すように、切断装置４を回転ロッド１２の操作によりジェット噴出孔７（Ｈ形鋼杭５の切断位置）に合わせて挿入させる。
Ｈ形鋼杭５の切断位置付近の土砂は、バキュームポンプなどで排出除去する。
【００１４】
＜ハ＞Ｈ形鋼杭の切断
切断装置４のアブレイシブジェットノズル１３からジェット噴出孔７に向けて高圧噴射水を噴射させ、Ｈ形鋼杭５を切断する。
【００１５】
＜ニ＞Ｈ形鋼杭の撤去
Ｈ形鋼杭５を切断後、Ｈ形鋼杭５に溶接した定着ロッド９を引上げて圧入装置３と共にクレーンなどで引上げ撤去する。
【００１６】
【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。
＜イ＞土中のＨ形鋼杭にメガネケーシングを圧入し、メガネケーシング内に切断装置を挿入して切断作業を行うので、任意の深度での切断・撤去作業ができる。
＜ロ＞高圧噴射水を利用した切断作業であるので、騒音、振動の発生なしに施工できる。
＜ハ＞土中のＨ形鋼杭引き抜きのための大掛かりな反力設備は必要ないので、工事費の低減が計れる。
【図面の簡単な説明】
【図１】本発明による土中のＨ杭切断工法の側断面図。
【図２】切断撤去するＨ形鋼杭にメガネケーシングを圧入した状態を示す正断面図。
【図３】同上側断面図。
【図４】メガネケーシング上に載置した圧入装置の側断面図。
【図５】切断撤去するＨ形鋼杭に沿ってメガネケーシングを圧入した状態を示す平面図。[0001]
BACKGROUND OF THE INVENTION
In the present invention, in order to effectively use a river or a space on a canal as a construction base, an H-shaped steel pile is installed and a pier is constructed. After the completion of the work, soil for removing the unnecessary H-shaped steel pile is removed. It relates to the H pile cutting method inside.
[0002]
[Prior art]
The removal work of H piles in urban areas is mainly performed by a pull-out method that does not involve vibrations and noises, instead of vibrations and vibrations that have been used in the past to prevent noise pollution.
[0003]
However, in the above-mentioned drawing method, a large reaction force facility necessary for drawing out must be provided around the H pile to be drawn out and removed.
Moreover, as a construction method that does not require a reaction force, there is a method of excavating around the H pile and cutting it underwater. In any of the methods, there is a problem that economical construction cannot be performed and the construction cost becomes enormous.
[0004]
[Problems to be solved by the invention]
The present invention has been made to solve the above-described conventional problems, and an object thereof is to provide an inexpensive H-pile cutting method in soil with good workability by a simple method.
[0005]
[Means for Solving the Problems]
This is a method for cutting and removing H-shaped steel piles buried in the soil without noise and vibration, with jet injection holes near the lower end and connecting the two casings with a predetermined interval. The glasses casing connected with the material is press-fitted along the flange so that the web of the H-shaped steel pile is sandwiched from both sides, a cutting device is inserted into the glasses casing, and a water jet is ejected from the jet ejection hole to form the H shape. It is an H-pile cutting method in soil, characterized by cutting steel piles.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0007]
<I> Overall Configuration FIG. 1 shows a side sectional view of the H-pile cutting method in soil according to the present invention.
The apparatus used in the present invention includes a glasses casing 2 in which a pair of
[0008]
<B> Glasses casing FIG. 2 is a front sectional view showing a state in which the glasses casing 2 is press-fitted into the H-shaped steel pile 5 to be cut and removed, and FIG. 3 is a side sectional view thereof.
The glasses casing 2 is obtained by fixing a pair of
A jet ejection hole 7 is provided in the vicinity of the front end of the glasses casing 2, and the front end is pre-set at an acute angle to facilitate press-fitting.
[0009]
<C> Press-In Device FIG. 4 is a side sectional view of the press-in device 3 placed on the glasses casing 2.
The press-fitting device 3 itself is an existing one. The press-fitting plate 8 of the press-fitting device 3 is placed on the top of the glasses casing 2 and the fixing rod 9 of the press-fitting device 3 is welded to the H-shaped steel pile 5 to be cut and removed. By tensioning the tension wire 11 by extension of the jack 10, the glasses casing 2 is press-fitted to a predetermined depth in the soil.
The fixing rod 9 welded to the H-shaped steel pile 5 is lifted and removed together with the press-fitting device 3 with a crane after cutting the H-shaped steel pile 5.
[0010]
<D> Cutting Device As shown in FIG. 1, the cutting device 4 is connected to the rotating rod 12 and inserted up to the jet ejection hole 7 in the glasses casing 2.
The cutting device 4 includes an
[0011]
[Action]
Below, the effect | action of the H pile cutting method in soil is demonstrated.
[0012]
<I> Press-fit of spectacle casing FIG. 5 is a plan view showing a state in which the spectacle casing 2 is press-fitted along the H-shaped steel pile 5 to be cut and removed.
Glasses casing 2 is formed by integrating
[0013]
<B> Insertion of Cutting Device As shown in FIG. 1, the cutting device 4 is inserted into the jet ejection hole 7 (cutting position of the H-shaped steel pile 5) by operating the rotating rod 12.
The earth and sand near the cutting position of the H-shaped steel pile 5 is discharged and removed with a vacuum pump or the like.
[0014]
<C> H-shaped steel pile cutting and cutting device 4 The high-pressure jet water is jetted from the
[0015]
<D> Removal of H-shaped steel pile After cutting the H-shaped steel pile 5, the fixing rod 9 welded to the H-shaped steel pile 5 is pulled up and lifted and removed together with the press-fitting device 3 with a crane or the like.
[0016]
【The invention's effect】
Since the present invention has been described above, the following effects can be obtained.
<I> Since the spectacle casing is press-fitted into the H-shaped steel pile in the soil and the cutting device is inserted into the spectacle casing to perform the cutting operation, cutting / removing operation at an arbitrary depth can be performed.
<B> Since it is a cutting operation using high-pressure jet water, it can be constructed without generating noise and vibration.
<C> Since there is no need for a large reaction force facility for pulling out H-shaped steel piles in the soil, construction costs can be reduced.
[Brief description of the drawings]
FIG. 1 is a side sectional view of an H pile cutting method in soil according to the present invention.
FIG. 2 is a front sectional view showing a state in which a spectacle casing is press-fitted into an H-shaped steel pile to be cut and removed.
FIG. 3 is a cross-sectional view of the same upper side.
FIG. 4 is a side cross-sectional view of a press-fitting device placed on a spectacle casing.
FIG. 5 is a plan view showing a state in which a spectacle casing is press-fitted along an H-shaped steel pile to be cut and removed.
Claims (1)
下端部付近にジェット噴出孔を設け、所定間隔をあけて２本のケーシングをケーシング接続材で接続したメガネケーシングを、
Ｈ形鋼杭のウェブを両側から挟むようにして、フランジ内に沿って圧入し、
メガネケーシング内に切断装置を挿入し、
ジェット噴出孔からウォータージェットを噴出させてＨ形鋼杭を切断することを特徴とする、
土中のＨ杭切断工法。A method for cutting and removing H-shaped steel piles buried in the soil without noise and vibration,
A glasses casing in which a jet ejection hole is provided in the vicinity of the lower end portion and two casings are connected by a casing connecting material at a predetermined interval.
Insert the H-shaped steel pile web from both sides and press fit along the flange.
Insert the cutting device into the glasses casing,
A water jet is ejected from a jet ejection hole and the H-shaped steel pile is cut.
H pile cutting method in the soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21991197A JP3801316B2 (en) | 1997-07-31 | 1997-07-31 | H pile cutting method in the soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21991197A JP3801316B2 (en) | 1997-07-31 | 1997-07-31 | H pile cutting method in the soil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1150456A JPH1150456A (en) | 1999-02-23 |
| JP3801316B2 true JP3801316B2 (en) | 2006-07-26 |
Family
ID=16742959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21991197A Expired - Fee Related JP3801316B2 (en) | 1997-07-31 | 1997-07-31 | H pile cutting method in the soil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3801316B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4958064B2 (en) * | 2006-08-09 | 2012-06-20 | 株式会社大林組 | Seismic reinforcement structure of quay |
| CN110792105A (en) * | 2019-11-19 | 2020-02-14 | 上海建工二建集团有限公司 | Existing in-situ pipe well segmented obstacle clearing method and device |
-
1997
- 1997-07-31 JP JP21991197A patent/JP3801316B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1150456A (en) | 1999-02-23 |
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