JPH0931980A - Method for pressing in sheet pile - Google Patents
Method for pressing in sheet pileInfo
- Publication number
- JPH0931980A JPH0931980A JP17904795A JP17904795A JPH0931980A JP H0931980 A JPH0931980 A JP H0931980A JP 17904795 A JP17904795 A JP 17904795A JP 17904795 A JP17904795 A JP 17904795A JP H0931980 A JPH0931980 A JP H0931980A
- Authority
- JP
- Japan
- Prior art keywords
- sheet pile
- bit
- excavating
- eccentric
- press
- 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
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
Description
【発明の詳細な説明】Detailed Description of the Invention
【０００１】[0001]
【産業上の利用分野】本発明は、岩盤、転石、コンクリ
ート等の存在する硬質または超硬質の地盤に矢板を圧入
する工法に関し、特にこのような硬質または超硬質の地
盤の掘削と矢板の圧入とを同時に行うようにした工法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for press-fitting a sheet pile into hard or ultra-hard ground where rock, boulders, concrete, etc. exist, and particularly to excavation of such hard or ultra-hard ground and press-fitting of sheet pile. It is related to the construction method that is done at the same time.
【０００２】[0002]
【従来の技術及びその課題】地盤が比較的軟質の一般土
壌の場合には、アースオーガ等の回転駆動される掘削主
軸に沿って矢板を支持しておいて、掘削主軸先端の掘削
ビットにより地盤を掘削しながら同時に矢板を圧入する
ことができる。しかし、この場合、矢板を掘削孔内に残
して掘削主軸を引き上げる関係上、アースオーガ等の従
来一般の掘削装置では、掘削主軸先端の掘削ビットの直
径を矢板の幅よりも小さくする必要がある。つまり、掘
削ビットの直径が矢板幅よりも大きければ、掘削主軸を
引き上げる際に掘削ビットが矢板の先端に引っ掛かって
掘削主軸の引き上げができなくなる。従って、掘削ビッ
トによって形成される掘削孔は、これに圧入する矢板の
幅よりも必然的に径小となって、矢板の圧入が極めて困
難となる。2. Description of the Related Art If the ground is relatively soft general soil, the sheet pile is supported along the rotary driven excavation spindle such as an earth auger and the ground is excavated by the excavation bit at the tip of the excavation spindle. While excavating, the sheet pile can be pressed in at the same time. However, in this case, the diameter of the drill bit at the tip of the drilling spindle needs to be smaller than the width of the sheet pile in a conventional general drilling device such as an earth auger because the drilling spindle is pulled up while leaving the sheet pile in the drilling hole. . That is, if the diameter of the excavating bit is larger than the width of the sheet pile, when the excavating spindle is pulled up, the excavating bit catches on the tip of the sheet pile and the excavation spindle cannot be pulled up. Therefore, the excavation hole formed by the excavation bit is inevitably smaller in diameter than the width of the sheet pile press-fitted into the excavation bit, which makes it extremely difficult to press-fit the sheet pile.
【０００３】一方、岩盤、転石、コンクリート等の存在
する硬質または超硬質の地盤に矢板を圧入する場合に
は、アースオーガ等によっては地盤の掘削ができないた
め、ロックオーガ装置、全周回転掘削機、あるいはダウ
ンザホールハンマーを備えた掘削装置によって、先に地
盤を掘削して掘孔を形成し、そしてこの掘孔内に砂、土
砂等の矢板支持材を投入し、その後アースオーガ等を使
用して矢板を掘孔内に打ち込むようにしている。ところ
が、このような所謂プレボーリング工法では、地盤の掘
削と、矢板の圧入とが別作業となる上、掘孔内に矢板支
持材を投入する作業も必要となり、また掘孔内に転石等
が存在するような場合には、圧入される矢板がその転石
等によって所定の打ち込み位置からずれたり、傾斜する
などして、圧入の途中で何回も修正作業を行う必要があ
り、従って矢板の圧入施工に煩雑な手間と長時間を要し
て、施工能率を著しく低下していた。On the other hand, when the sheet pile is press-fitted into the hard or superhard ground where rock, boulders, concrete, etc. exist, the ground auger cannot excavate the ground. Or, with an excavator equipped with a down-the-hole hammer, first excavate the ground to form a pit, and then insert a sheet pile support material such as sand or earth and sand into the pit, and then use an earth auger or the like. The sheet pile is driven into the hole. However, in such a so-called pre-boring method, excavation of the ground and press-fitting of the sheet pile are separate works, and work for inserting the sheet pile support material into the drill hole is also required, and boulders, etc. If there is such a sheet pile, the sheet pile to be press-fitted needs to be corrected many times during the press-fitting because the sheet pile is displaced or tilted from the prescribed driving position due to the boulders, etc. The construction took a lot of time and labor, and the construction efficiency was significantly reduced.
【０００４】本発明は、上記のような課題に鑑み、岩
盤、転石、コンクリート等の存在する硬質または超硬質
の地盤への矢板の圧入を、迅速且つ容易にしかも所定位
置に正確に行える工法を提供することを目的とする。In view of the above problems, the present invention provides a construction method capable of quickly, easily and accurately pressing a sheet pile into a hard or super-hard ground where rock, boulders, concrete, etc. are present. The purpose is to provide.
【０００５】[0005]
【課題を解決するための手段】本発明の請求項１は、回
転駆動される掘削主軸５に沿って矢板１０を配設し、該
掘削主軸５にダウンザホールハンマー８を備え且つビッ
ト本体９ａが偏心した偏心掘削ビット９を取付け、ダウ
ンザホールハンマー８により打撃される偏心掘削ビット
９の回転打撃作用によって地盤を掘削し、この掘削に追
従して矢板１０を圧入するようにし、矢板１０の圧入完
了後はビット本体９ａが矢板１０に衝突しないようにし
て地盤中から引き抜くことを特徴とする。According to a first aspect of the present invention, a sheet pile 10 is arranged along an excavating spindle 5 which is rotationally driven, a down the hole hammer 8 is provided on the excavating spindle 5, and a bit body 9a is eccentric. The eccentric excavation bit 9 is attached, the ground is excavated by the rotational impact action of the eccentric excavation bit 9 that is impacted by the down the hole hammer 8, and the sheet pile 10 is press-fitted following this excavation. It is characterized in that the bit body 9a is pulled out from the ground so as not to collide with the sheet pile 10.
【０００６】請求項２に係る矢板の圧入工法は、回転駆
動される掘削主軸５にケーシング６を外嵌装備すると共
に、該掘削主軸５の先端部に、ビットの回転による最大
軌跡円Ｓの直径が矢板幅Ｗとほぼ同一で矢板圧入完了後
にビット本体９ａが矢板１０に衝突しないよう地盤中か
ら引き抜き可能な偏心掘削ビット９をダウンザホールハ
ンマー８を介して取付けた掘削装置１を用い、第１矢板
１０Ａを、その一方の継手用係合部１０ａが前記最大軌
跡円Ｓ内に位置し且つ他方の継手用係合部１０ｂが該最
大軌跡円Ｓの外に位置するようにケーシング６に支持し
て、ダウンザホールハンマー８により打撃される偏心掘
削ビット９の回転打撃作用によって地盤を掘削しながら
第１矢板１０Ａを圧入し、次いで掘削装置１をほぼ矢板
幅Ｗ分前進させ、第２矢板１０Ｂを第１矢板１０Ａと逆
向きにケーシング６に支持すると共に、第２矢板１０Ｂ
の一方の継手用係合部１０ｂを前記最大軌跡円Ｓの外に
位置させて既掘削孔１７Ａ内に位置する第１矢板１０Ａ
の継手用係合部１０ａに係合させ且つ第２矢板１０Ｂの
他方の継手用係合部１０ａを前記最大軌跡円Ｓ内に位置
させた状態で、前記偏心掘削ビット９により地盤を掘削
しながら第２矢板を圧入し、以降上記の工程を繰り返し
行うことを特徴とする。In the method of press-fitting a sheet pile according to a second aspect of the present invention, a casing 6 is externally fitted to the rotatively driven excavating spindle 5, and the diameter of the maximum trajectory circle S due to the rotation of the bit is provided at the tip of the excavating spindle 5. Is substantially the same as the sheet pile width W, and the eccentric excavation bit 9 is attached via the down-the-hole hammer 8 from the ground so that the bit body 9a does not collide with the sheet pile 10 after completion of press-fitting of the sheet pile. 10A is supported by the casing 6 such that one joint engaging portion 10a is located inside the maximum trajectory circle S and the other joint engaging portion 10b is located outside the maximum trajectory circle S. , The first sheet pile 10A is press-fitted while excavating the ground by the rotational impact action of the eccentric excavation bit 9 that is impacted by the down the hole hammer 8, and then the excavation device 1 is advanced by approximately the sheet pile width W, 2 sheet pile 10B while supporting the casing 6 to the first sheet pile 10A and opposite, second sheet pile 10B
The first sheet pile 10A positioned inside the already excavated hole 17A with one of the joint engaging portions 10b located outside the maximum trajectory circle S.
While excavating the ground with the eccentric excavation bit 9 in a state of engaging the joint engaging portion 10a of No. 1 and the other joint engaging portion 10a of the second sheet pile 10B within the maximum trajectory circle S. The second sheet pile is press-fitted, and the above steps are repeated thereafter.
【０００７】請求項３に係る矢板の圧入工法は、複数の
掘削主軸１８，１９にそれぞれケーシング２０，２１を
外嵌装備し、各掘削主軸１８，１９の先端部に、矢板圧
入完了後にビット本体が矢板に衝突しないように地盤中
から引き抜き可能な偏心掘削ビット２２，２３をダウン
ザホールハンマー２４，２５を介して取付けると共に、
これら偏心掘削ビット２２，２３のそれぞれの回転によ
り一部重複するように形成される複合軌跡円Ｓｏの最大
幅Ｈが矢板幅Ｗとほぼ同一である多軸掘削装置を用い、
第１矢板１０Ａを、その一方の継手用係合部１０ａが前
記複合軌跡円Ｓｏ内に位置し且つ他方の継手用係合部１
０ｂが該複合軌跡円Ｓｏの外に位置するように複数のケ
ーシング２０，２１に支持して、ダウンザホールハンマ
ー２４，２５により打撃される偏心掘削ビット２２，２
３の回転打撃作用により地盤を掘削しながら第１矢板１
０Ａを圧入し、次いで掘削装置をほぼ矢板１０分前進さ
せ、第２矢板１０Ｂを第１矢板１０Ａと逆向きに複数の
ケーシング２０，２１に支持すると共に、第２矢板１０
Ｂの一方の継手用係合部１０ｂを前記複合軌跡円Ｓｏの
外に位置させて既掘削孔内に位置する第１矢板１０Ａの
継手用係合部１０ａに係合させ且つ第２矢板１０Ｂの他
方の継手用係合部１０ａを前記複合軌跡円Ｓｏ内に位置
させた状態で、偏心掘削ビット２２，２３により地盤を
掘削しながら第２矢板１０Ｂを圧入し、以降上記の工程
を繰り返し行うことを特徴とする。In the method of press-fitting a sheet pile according to a third aspect of the present invention, casings 20 and 21 are externally fitted to a plurality of excavating spindles 18 and 19, respectively, and the bit main body is inserted into the tips of the excavating spindles 18 and 19 after the sheet-sheet press-fitting is completed. The eccentric drilling bits 22 and 23 that can be pulled out from the ground so as not to collide with the sheet pile are attached via down the hole hammers 24 and 25.
Using a multi-axis excavator in which the maximum width H of the compound trajectory circle So formed so as to partially overlap by the rotation of each of these eccentric excavation bits 22 and 23 is substantially the same as the sheet pile width W,
The first sheet pile 10A has one joint engaging portion 10a located within the compound locus circle So and the other joint engaging portion 1a.
The eccentric drill bit 22,2 supported by a plurality of casings 20,21 so that 0b is located outside the compound trajectory circle So, and hit by down-the-hole hammers 24,25.
The first sheet pile 1 while excavating the ground by the rotary impact action of 3.
0A is press-fitted, then the excavation device is advanced by about 10 minutes, and the second sheet pile 10B is supported by the plurality of casings 20 and 21 in the opposite direction to the first sheet pile 10A, and at the same time, the second sheet pile 10 is formed.
One of the joint engaging portions 10b of B is positioned outside the compound locus circle So to engage with the joint engaging portion 10a of the first sheet pile 10A located in the already drilled hole and the second sheet pile 10B. With the other joint engaging portion 10a positioned in the compound locus circle So, press the second sheet pile 10B while excavating the ground with the eccentric excavation bits 22 and 23, and thereafter repeat the above steps. Is characterized by.
【０００８】[0008]
【作用】請求項１に係る矢板の打ち込み工法にあって
は、ダウンザホールハンマー８により打撃される掘削ビ
ット９の回転打撃作用によって地盤を掘削し、この掘削
に追従して矢板１０を圧入するから、岩盤、転石、コン
クリート等の存在する硬質または超硬質の地盤の掘削が
容易に可能となると共に、斯かる地盤への矢板の圧入を
迅速且つ容易にしかも所定位置に正確に行うことができ
る。しかも、掘削ビットは、矢板１０の圧入完了後にビ
ット本体９ａが矢板１０に衝突することなく引き抜くこ
とができるように偏心した偏心掘削ビット９であるか
ら、この偏心掘削ビット９を採用することによって、掘
削孔（例えば図５に１７Ａ，１７Ｂで示す）の内径を十
分に大きく、矢板幅Ｗと同等あるいはそれ以上に形成す
ることができ、従って直進性を維持して所定位置に正確
に矢板１０を圧入することができる。In the method for driving a sheet pile according to the first aspect, the ground is excavated by the rotary impact action of the excavation bit 9 that is impacted by the down the hole hammer 8, and the sheet pile 10 is press-fitted following the excavation. This makes it possible to easily excavate the hard or ultra-hard ground where rock, boulders, concrete, etc. exist, and to press the sheet pile into the ground quickly, easily, and accurately at a predetermined position. Moreover, since the excavating bit is the eccentric excavating bit 9 that is eccentric so that the bit body 9a can be pulled out without colliding with the sheet pile 10 after the press-fitting of the sheet pile 10 is completed, by adopting this eccentric excavating bit 9, The inner diameter of the excavation hole (for example, shown by 17A and 17B in FIG. 5) can be made sufficiently large to be equal to or larger than the sheet pile width W, so that the straight sheet can be maintained and the sheet pile 10 can be accurately placed at a predetermined position. Can be pressed.
【０００９】請求項２に係る矢板の打ち込み工法にあっ
ては、掘削装置１を地上の所定箇所に配置して、第１矢
板１０Ａを、その一方の継手用係合部１０ａが偏心掘削
ビット９の回転による最大軌跡円Ｓ内に位置し且つ他方
の継手用係合部１０ｂが該最大軌跡円Ｓの外に位置する
ようにケーシング６に支持し、そして掘削主軸５の回転
により偏心掘削ビット９を回転すると共にダウンザホー
ルハンマー８により偏心掘削ビット９を打撃して、この
偏心掘削ビット９の回転打撃作用によって地盤を掘削し
ながら、第１矢板１０Ａを地盤中所定深度まで圧入す
る。この第１矢板１０Ａの圧入完了後は、偏心掘削ビッ
ト９を第１矢板１０Ａの先端に衝突しない位置まで回転
させることにより、偏心掘削ビット９を矢板１０に沿っ
て地盤中から引き抜くことができる。In the method for driving a sheet pile according to a second aspect, the excavation device 1 is arranged at a predetermined position on the ground, and the first sheet pile 10A has one joint engaging portion 10a for the eccentric excavating bit 9. Of the eccentric drill bit 9 by supporting the casing 6 so that the other engaging portion 10b for the joint is located outside the circle S of maximum trajectory due to the rotation of the eccentric drilling shaft S. The first sheet pile 10A is press-fitted into the ground to a predetermined depth while the eccentric drilling bit 9 is hit by the down-the-hole hammer 8 and the ground is excavated by the rotary hitting action of the eccentric drilling bit 9. After the press-fitting of the first sheet pile 10A is completed, the eccentric excavation bit 9 can be pulled out from the ground along the sheet pile 10 by rotating the eccentric excavation bit 9 to a position where it does not collide with the tip of the first sheet pile 10A.
【００１０】次いで、掘削装置１を矢板幅Ｗだけ前進さ
せた後、第２矢板１０Ｂを第１矢板１０Ａと逆向きにケ
ーシング６に支持すると共に、第２矢板１０Ｂの一方の
継手用係合部１０ｂを前記最大軌跡円Ｓの外に位置させ
て、既掘削孔１７Ａ内に位置する第１矢板１０Ａの継手
用係合部１０ａに係合させ、且つ第２矢板１０Ｂの他方
の継手用係合部１０ａを前記最大軌跡円Ｓ内に位置させ
た状態で、前記の第１矢板１０Ａの場合と同様に偏心掘
削ビット９の回転打撃作用によって地盤を掘削しつつ第
２矢板を圧入しながら、第２矢板１０Ｂを第１矢板１０
Ａと接合する。以降は、上記の工程を繰り返すことによ
って、矢板１０列を形成することができる。After advancing the excavation device 1 by the sheet pile width W, the second sheet pile 10B is supported by the casing 6 in the opposite direction to the first sheet pile 10A and the engaging portion for one joint of the second sheet pile 10B. 10b is positioned outside the maximum trajectory circle S to engage with the joint engaging portion 10a of the first sheet pile 10A located in the already drilled hole 17A, and the other joint engagement of the second sheet pile 10B. While the part 10a is positioned within the maximum trajectory circle S, the second sheet pile is pressed in while excavating the ground by the rotary impact action of the eccentric excavation bit 9 as in the case of the first sheet pile 10A. 2 sheet pile 10B to 1st sheet pile 10
Join with A. After that, by repeating the above steps, 10 rows of sheet piles can be formed.
【００１１】この請求項２の工法では、請求項１の工法
と同様に、岩盤、転石、コンクリート等の存在する硬質
または超硬質の地盤の掘削が容易に可能で、矢板１０の
圧入を迅速且つ容易にしかも直進性を維持して所定位置
に正確に行うことができるが、特にこの請求項２の工法
によれば、ビットの回転による最大軌跡円Ｓの直径が矢
板幅Ｗとほぼ同一の偏心掘削ビット９を用いて、第１矢
板１０Ａ、第２矢板１０Ｂ、第３矢板１０Ｃ等々を上述
のように圧入するため、隣合う掘削孔間に掘削残し部分
を形成することなく有効に掘削孔を掘削でき、また既に
打ち込まれた例えば第１矢板１０Ａに対し第２矢板１０
Ｂの圧入を行う際に、この第２矢板１０Ｂが圧入される
掘削孔１７Ｂを掘削する偏心掘削ビット９が、これに隣
接する第１矢板１０Ａの継手用係合部１０ａに衝当する
ことがなく、従って矢板１０の継手用係合部の変形や損
傷を防止できて、矢板１０の引き抜き時作業を容易に行
えると共に、矢板１０を何回も使用できる。According to the construction method of claim 2, similarly to the construction method of claim 1, it is possible to easily excavate the hard or super-hard ground where rock, boulders, concrete, etc. exist, and the press-fitting of the sheet pile 10 can be performed quickly and quickly. Although it is possible to easily and accurately maintain straightness at a predetermined position, in particular, according to the construction method of claim 2, the eccentricity is such that the diameter of the maximum trajectory circle S due to the rotation of the bit is substantially the same as the sheet pile width W. By using the drill bit 9 to press fit the first sheet pile 10A, the second sheet pile 10B, the third sheet pile 10C, etc. as described above, it is possible to effectively form a drill hole without forming an unexposed portion between adjacent drill holes. The second sheet pile 10 can be excavated, and the second sheet pile 10 can be drilled against the first sheet pile 10A, for example.
When press-fitting B, the eccentric excavation bit 9 for excavating the excavation hole 17B into which the second sheet pile 10B is press-fitted may strike the joint engaging portion 10a of the first sheet pile 10A adjacent thereto. Therefore, it is possible to prevent the joint engaging portion of the sheet pile 10 from being deformed or damaged, the pulling-out operation of the sheet pile 10 can be easily performed, and the sheet pile 10 can be used many times.
【００１２】請求項３に係る矢板の打ち込み工法にあっ
ては、多軸掘削装置を地上の所定箇所に配置し、第１矢
板１０Ａを、その一方の継手用係合部１０ａが複合軌跡
円Ｓｏの軌跡円Ｓａ内に位置し且つ他方の継手用係合部
１０ｂが該複合軌跡円Ｓｏの軌跡円Ｓｂの外に位置する
ように両ケーシング２０，２１に支持して、ダウンザホ
ールハンマー２４，２５により打撃される偏心掘削ビッ
ト２２，２３の回転打撃作用によって地盤を掘削しなが
ら、第１矢板１０Ａを地盤中所定深度まで圧入する。第
１矢板１０Ａの圧入完了後は、偏心掘削ビット２２，２
３を第１矢板１０Ａの先端に衝突しない位置まで回転さ
せることにより、偏心掘削ビット２２，２３を矢板１０
に沿って地盤中から引き抜くことができる。In the method for driving a sheet pile according to a third aspect of the present invention, the multi-axis excavating device is arranged at a predetermined position on the ground, and the first sheet pile 10A is provided with the one joint engaging portion 10a of the compound locus circle So. Is supported by both casings 20 and 21 so that the other joint engaging portion 10b is located outside the trajectory circle Sb of the compound trajectory circle So by the down-the-hole hammers 24 and 25. While excavating the ground by the rotational impact action of the eccentric excavation bits 22 and 23 that are impacted, the first sheet pile 10A is press-fitted to a predetermined depth in the ground. After the press-fitting of the first sheet pile 10A is completed, the eccentric excavation bits 22, 2
The eccentric excavation bits 22 and 23 are rotated by rotating 3 to a position where they do not collide with the tip of the first sheet pile 10A.
Can be pulled out from the ground along.
【００１３】次いで、多軸掘削装置を、ほぼ矢板幅Ｗ分
前進させ、第２矢板１０Ｂを第１矢板１０Ａと逆向きに
両ケーシング２０，２１に支持すると共に、第２矢板１
０Ｂの一方の継手用係合部１０ｂを前記複合軌跡円Ｓｏ
の軌跡Ｓｂの外に位置させて、既に掘削された掘削孔内
に位置する第１矢板１０Ａの継手用係合部１０ａに係合
させ且つ第２矢板１０Ｂの他方の継手用係合部１０ａを
前記複合軌跡円Ｓｏの軌跡円Ｓａ内に位置させた状態
で、各偏心掘削ビット２２，２３により地盤を掘削しな
がら第２矢板１０Ｂを圧入し、第２矢板１０Ｂを第１矢
板１０Ａに接合する。以降は、上記の工程を繰り返すこ
とによって、矢板１０列を形成することができる。Next, the multi-axis excavator is advanced by approximately the width of the sheet pile W, the second sheet pile 10B is supported by the casings 20 and 21 in the direction opposite to the direction of the first sheet pile 10A, and the second sheet pile 1 is formed.
0B of one joint engaging portion 10b to the composite trajectory circle So
Of the first sheet pile 10A located inside the already excavated hole and the other joint engagement portion 10a of the second sheet pile 10B. While being positioned within the trajectory circle Sa of the compound trajectory circle So, the second sheet pile 10B is press-fitted while excavating the ground by the eccentric excavation bits 22 and 23, and the second sheet pile 10B is joined to the first sheet pile 10A. . After that, by repeating the above steps, 10 rows of sheet piles can be formed.
【００１４】この請求項３の打ち込み工法も、請求項２
の工法と同様に、両偏心掘削ビット２２，２３のそれぞ
れの回転により一部重複するように形成される複合軌跡
円Ｓｏの最大幅Ｈが矢板幅Ｗとほぼ同一である２つの偏
心掘削ビット２２，２３を用いて、矢板１０の圧入を行
うため、隣合う掘削孔間に掘削残し部分を形成すること
なく有効に掘削孔を掘削できると共に、既に圧入された
例えば第１矢板１０Ａに対し第２矢板１０Ｂの圧入を行
う際に、この第２矢板１０Ｂが圧入される掘削孔を掘削
する一方の偏心掘削ビット２３が、これに隣接する第１
矢板１０Ａの継手用係合部１０ａに衝当することがな
い。そして、特にこの請求項３の工法によれば、矢板幅
Ｗの広い大型の矢板１０の圧入に最適である。即ち、大
型の矢板１０の場合、単軸の掘削装置を使用すると、１
つの偏心掘削ビットにより掘削される掘削孔の内径が大
きくなって必要以上に地盤が掘削される傾向にあるが、
多軸掘削装置の使用によると、複数の偏心掘削ビットに
よって横方向につながる横長の複合軌跡円Ｓｏで掘削孔
が形成されることになるから、矢板１０の圧入に必要な
最低限の大きさの地盤を掘削できると共に、複数の偏心
掘削ビットの組み合わせによって、種々の形状、大きさ
の矢板１０に対応できる利点がある。The driving method of claim 3 is also the method of claim 2.
Similar to the construction method of No. 2, two eccentric excavating bits 22 in which the maximum width H of the compound trajectory circle So formed so as to partially overlap by the respective rotations of the eccentric excavating bits 22 and 23 are substantially the same as the sheet pile width W , 23 are used to press-fit the sheet pile 10, it is possible to effectively excavate the excavation hole without forming an unexcavation residual portion between the adjacent excavation holes, and to press the second sheet to the already press-fitted first sheet pile 10A, for example. When press-fitting the sheet pile 10B, one eccentric drilling bit 23 for drilling a drill hole into which the second pile 10B is press-fitted is adjacent to the first eccentric drilling bit 23.
It does not hit the joint engaging portion 10a of the sheet pile 10A. And, in particular, according to the construction method of the third aspect, it is optimal for press-fitting a large sheet pile 10 having a wide sheet pile width W. That is, in the case of a large sheet pile 10, if a single-axis excavator is used,
The eccentric drilling bit increases the inner diameter of the drilling hole and tends to drill more ground than necessary.
According to the use of the multi-axis drilling device, the drill hole is formed by the laterally long compound trajectory circle So that is laterally connected by the plurality of eccentric drill bits, and therefore the minimum size required for press-fitting the sheet pile 10 is required. There is an advantage that the ground can be excavated, and a plurality of eccentric excavation bits can be combined to cope with the sheet pile 10 having various shapes and sizes.
【００１５】[0015]
【実施例】実施例について図面を参照して説明すると、
図１は本発明工法を実施するのに使用する掘削装置１を
示し、図２はその拡大図を示す。これらの図から明らか
なように、掘削装置１は、クローラクレーン２により立
設されたリーダ３に沿って昇降可能に支持されるオーガ
マシン４を有し、このオーガマシン４の下部には、該オ
ーガマシン４によって回転駆動される中空状の掘削主軸
５が垂下連結されると共に、この掘削主軸５に同心状に
外嵌されるケーシング６が垂下連結され、このケーシン
グ６は、オーガマシン４の下部に設けられたケーシング
回転駆動手段７により回転駆動される。掘削主軸５の下
端部にはダウンザホールハンマー８を介して偏心掘削ビ
ット９が一体に装備され、この偏心掘削ビット９は、オ
ーガマシン４による掘削主軸５の回転に伴って掘削主軸
５の回転中心軸Ｏの周りを回転すると同時に、掘削主軸
５の中空部５ａに供給される圧縮エアで駆動するダウン
ザホールハンマー８によって打撃されるようになってい
る。ケーシング６の上端部には、矢板１０を支持するた
めのチャック装置１１が設けてあり、この矢板１０は、
図１に示す矢板吊り込み手段１２により吊り込まれる。EXAMPLES Examples will be described with reference to the drawings.
FIG. 1 shows an excavation device 1 used for carrying out the method of the present invention, and FIG. 2 shows an enlarged view thereof. As is clear from these drawings, the excavation device 1 has an auger machine 4 supported up and down along a leader 3 erected by a crawler crane 2, and a lower part of the auger machine 4 has the auger machine 4. A hollow excavation main shaft 5 rotationally driven by the auger machine 4 is droopingly connected, and a casing 6 concentrically fitted on the excavation main shaft 5 is droopingly connected. The casing 6 is a lower part of the auger machine 4. It is rotationally driven by the casing rotational drive means 7 provided in the. An eccentric drilling bit 9 is integrally provided at the lower end of the drilling spindle 5 via a down-the-hole hammer 8, and the eccentric drilling bit 9 rotates along with the rotation of the drilling spindle 5 by the auger machine 4. At the same time as rotating around O, it is hit by a down-the-hole hammer 8 driven by compressed air supplied to the hollow portion 5a of the excavation main shaft 5. A chuck device 11 for supporting the sheet pile 10 is provided at the upper end of the casing 6, and the sheet pile 10 includes:
It is suspended by the sheet pile suspending means 12 shown in FIG.
【００１６】図３及び図４は、掘削主軸５の下端部にダ
ウンザホールハンマー８を介して一体装備された偏心掘
削ビット９を示し、この偏心掘削ビット９は、ビット本
体９ａとビット軸部９ａからなるもので、矢板１０の圧
入完了後に該掘削ビット９を地盤中から引き抜く際にビ
ット本体９ａが矢板１０に衝突しないように掘削主軸５
の回転中心軸Ｏに対して偏心して形成されている。この
偏心掘削ビット９は、図３に示すように全体が側面視で
略ブーツ状に形成されると共に、ビット本体９ａが平面
視または底面視（図４参照）で略扇形に形成されてお
り、またビット本体９ａの外周面及び底面には多数の突
起１３が設けられている。尚、図４において１４は、ビ
ット本体９ａの底面に開口するエア噴出孔で、このエア
噴出孔１４よりダウンザホールハンマー８からの圧縮エ
アが噴出され、それによって岩盤等の掘削時にその掘削
粉等が掘削孔とケーシング６との隙間を通って地上に吹
上げられるようになっている。FIGS. 3 and 4 show an eccentric drilling bit 9 integrally mounted on the lower end of the drilling spindle 5 via a down-the-hole hammer 8. The eccentric drilling bit 9 includes a bit body 9a and a bit shaft portion 9a. In order to prevent the bit main body 9a from colliding with the sheet pile 10 when the excavation bit 9 is pulled out from the ground after the press-fitting of the sheet pile 10 is completed,
Is formed eccentrically with respect to the rotation center axis O. As shown in FIG. 3, the eccentric drilling bit 9 is formed in a boot shape as a whole in a side view, and the bit body 9a is formed in a fan shape in a plan view or a bottom view (see FIG. 4). A large number of protrusions 13 are provided on the outer peripheral surface and the bottom surface of the bit body 9a. In addition, in FIG. 4, 14 is an air ejection hole opened on the bottom surface of the bit main body 9a. Compressed air is ejected from the down-the-hole hammer 8 from this air ejection hole 14, whereby the excavated powder and the like are excavated during rock excavation. It can be blown up to the ground through the gap between the excavation hole and the casing 6.
【００１７】図４に示すように、偏心掘削ビット９は、
掘削主軸５の回転中心軸Ｏを中心に回転する該偏心掘削
ビット９の最大軌跡円Ｓの直径が矢板幅Ｗとほぼ同一と
なるように形成されている。そして、矢板１０は、該矢
板１０の中心Ｐが掘削主軸５の回転中心軸Ｏ（偏心掘削
ビット９の回転中心軸でもあり、ケーシング６の中心軸
でもある）に対して矢板１０の各継手用係合部１０ａ，
１０ｂの幅ｗにほぼ相当する長さＥだけずらした状態
で、ケーシング６に支持される。この矢板１０の取付け
にあたって、矢板１０の上端部は、前記チャック装置１
１によって支持され、矢板１０の下端部は、ケーシング
６側に設けた差し込み金具１５を矢板１０側に設けた受
け金具１６に差し込むことによって、ケーシング６に支
持される（図４参照）。As shown in FIG. 4, the eccentric drill bit 9 is
The diameter of the maximum trajectory circle S of the eccentric excavation bit 9 that rotates around the rotation center axis O of the excavation main shaft 5 is formed to be substantially the same as the sheet pile width W. The sheet pile 10 has a center P of the sheet pile 10 for each joint of the sheet pile 10 with respect to a rotation center axis O of the excavation main shaft 5 (which is also the rotation center axis of the eccentric excavation bit 9 and the casing 6). Engaging portion 10a,
It is supported by the casing 6 in a state of being displaced by a length E substantially corresponding to the width w of 10b. When attaching the sheet pile 10, the upper end portion of the sheet pile 10 has the chuck device 1
The lower end portion of the sheet pile 10 is supported by the casing 6 by inserting the insert fitting 15 provided on the casing 6 side into the receiving fitting 16 provided on the sheet pile 10 side (see FIG. 4).
【００１８】次に、上記のような偏心掘削ビット９を備
えた掘削装置１の使用による矢板１０の圧入工法につい
て図３〜図５を参照して具体的に説明する。Next, the method of press-fitting the sheet pile 10 by using the excavating device 1 equipped with the eccentric excavating bit 9 as described above will be specifically described with reference to FIGS.
【００１９】先ず、掘削装置１を地上の所定箇所に配置
して、図５の右側に示すように、第１矢板１０Ａを、そ
の一方の継手用係合部１０ａが偏心掘削ビット９の回転
による最大軌跡円Ｓ内に位置し且つ他方の継手用係合部
１０ｂが該最大軌跡円Ｓの外に位置するようにケーシン
グ６に支持する。そして、オーガマシン４により掘削主
軸５を回転駆動し、この掘削主軸５の回転によって偏心
掘削ビット９を回転すると共に、この偏心掘削ビット９
をダウンザホールハンマー８によって打撃し、しかして
この偏心掘削ビット９の回転打撃作用によって地盤を掘
削しながら、第１矢板１０Ａを地盤中所定深度まで圧入
する。この第１矢板１０Ａの圧入が完了したならば、掘
削主軸５の回転を、偏心掘削ビット９が図５右側の仮想
線図示のように第１矢板１０Ａの先端に衝突しない位置
で停止させた後、掘削装置１を地上に引き上げると共に
偏心掘削ビット９を矢板１０に沿って地盤中から引き抜
く。尚、第１矢板１０Ａの圧入に際しては、この第１矢
板１０Ａの継手用係合部１０ｂが最大軌跡円Ｓの外にあ
って、その部分が掘削されないため、この継手用係合部
１０ｂに対応する地盤部分は、掘削装置１によって予め
掘削しておくとよい。First, the excavation device 1 is arranged at a predetermined location on the ground, and as shown on the right side of FIG. 5, the first sheet pile 10A has one joint engaging portion 10a formed by the rotation of the eccentric excavation bit 9. The casing 6 is supported so that it is located within the maximum trajectory circle S and the other joint engaging portion 10b is located outside the maximum trajectory circle S. Then, the excavation spindle 5 is rotationally driven by the auger machine 4, the eccentric excavation bit 9 is rotated by the rotation of the excavation spindle 5, and the eccentric excavation bit 9 is also rotated.
Is struck by the down-the-hole hammer 8, and while the excavation of the ground is performed by the rotary impact action of the eccentric excavation bit 9, the first sheet pile 10A is press-fitted to a predetermined depth in the ground. When the press-fitting of the first sheet pile 10A is completed, the rotation of the excavation spindle 5 is stopped at a position where the eccentric excavation bit 9 does not collide with the tip of the first sheet pile 10A as shown by the phantom line on the right side of FIG. The excavator 1 is pulled up to the ground and the eccentric excavation bit 9 is pulled out from the ground along the sheet pile 10. When the first sheet pile 10A is press-fitted, the joint engaging portion 10b of the first sheet pile 10A is outside the maximum trajectory circle S, and the portion is not excavated. Therefore, the first sheet pile 10A corresponds to the joint engaging portion 10b. The ground portion to be excavated may be excavated by the excavation device 1 in advance.
【００２０】次いで、地上に引き上げた掘削装置１を矢
板幅Ｗだけ前進させた後、第２矢板１０Ｂを第１矢板１
０Ａと逆向きにケーシング６に支持すると共に、第２矢
板１０Ｂの一方の継手用係合部１０ｂを前記最大軌跡円
Ｓの外に位置させて、既掘削孔１７Ａ内に位置する第１
矢板１０Ａの継手用係合部１０ａに係合させ、且つ第２
矢板１０Ｂの他方の継手用係合部１０ａを前記最大軌跡
円Ｓ内に位置させた状態で、前記の第１矢板１０Ａの場
合と同様に偏心掘削ビット９の回転打撃作用によって地
盤を掘削しながら第２矢板を圧入し、第１矢板１０Ａと
接合する。この第２矢板１０Ｂの圧入完了後、掘削主軸
５の回転を、偏心掘削ビット９が図５中央の仮想線図示
のように第２矢板１０Ｂの先端に衝突しない位置で停止
させた後、掘削装置１を地上に引き上げると共に偏心掘
削ビット９を第２矢板１０Ｂに沿って地盤中から引き抜
く。Next, after the excavation device 1 pulled up to the ground is advanced by the sheet pile width W, the second sheet pile 10B is moved to the first sheet pile 1.
While supporting the casing 6 in a direction opposite to 0A, the one joint engaging portion 10b of the second sheet pile 10B is located outside the maximum trajectory circle S, and is located in the already drilled hole 17A.
The engagement portion 10a for the joint of the sheet pile 10A is engaged, and the second
While excavating the ground by the rotary striking action of the eccentric excavation bit 9 in the state where the other joint engaging portion 10a of the sheet pile 10B is positioned within the maximum trajectory circle S, as in the case of the first sheet pile 10A. The second sheet pile is press-fitted and joined to the first sheet pile 10A. After the press-fitting of the second sheet pile 10B is completed, the rotation of the excavation spindle 5 is stopped at a position where the eccentric excavation bit 9 does not collide with the tip of the second sheet pile 10B as shown by a virtual line in the center of FIG. 1 is pulled up to the ground and the eccentric excavation bit 9 is pulled out from the ground along the second sheet pile 10B.
【００２１】引続き、掘削装置１を矢板幅Ｗだけ更に前
進させた後、第３矢板１０Ｃを第２矢板１０Ｂと逆向き
にケーシング６に支持すると共に、第３矢板１０Ｃの一
方の継手用係合部１０ｂを前記最大軌跡円Ｓの外に位置
させて、既掘削孔１７Ｂ内に位置する第２矢板１０Ｂの
継手用係合部１０ａに係合させ、第３矢板１０Ｃの他方
の継手用係合部１０ａを前記最大軌跡円Ｓ内に位置させ
た状態で、前記同様に偏心掘削ビット９の回転打撃作用
によって地盤を掘削しながら第３矢板１０Ｃを圧入し、
第１矢板１０Ａと接合する。この第３矢板１０Ｃの圧入
完了後、掘削主軸５の回転を、偏心掘削ビット９が図５
の左側に実線で示すように第３矢板１０Ｃの先端に衝突
しない位置で停止させ、掘削装置１と共に偏心掘削ビッ
ト９を第３矢板１０Ｃに沿って地盤中から引き抜く。以
降、上記同様にして第４矢板、第５矢板等々所要本数の
矢板１０を圧入する。Subsequently, after further excavating the excavating device 1 by the sheet pile width W, the third sheet pile 10C is supported by the casing 6 in the opposite direction to the second sheet pile 10B, and the third sheet pile 10C is engaged with one joint. The portion 10b is located outside the maximum locus circle S to be engaged with the joint engaging portion 10a of the second sheet pile 10B located in the already drilled hole 17B, and the other joint engagement of the third sheet pile 10C. In a state where the portion 10a is positioned within the maximum trajectory circle S, the third sheet pile 10C is press-fitted while excavating the ground by the rotary impact action of the eccentric excavation bit 9 as described above,
Join with the first sheet pile 10A. After the press-fitting of the third sheet pile 10C is completed, the rotation of the excavation spindle 5 is changed by the eccentric excavation bit 9 as shown in FIG.
As shown by the solid line on the left side of the figure, the eccentric excavation bit 9 is pulled out from the ground along the third sheet pile 10C together with the excavator 1 by stopping at a position where it does not collide with the tip of the third sheet pile 10C. Thereafter, the required number of sheet piles 10 such as the fourth sheet pile and the fifth sheet pile are press-fitted in the same manner as described above.
【００２２】上述した実施例の圧入工法によれば、掘削
主軸５により回転されると共にダウンザホールハンマー
８により打撃される掘削ビット９の回転打撃作用によっ
て、地盤を掘削して掘削孔を形成しながら矢板１０を打
ち込んでゆくものであるから、岩盤、転石、コンクリー
ト等の存在する硬質または超硬質の地盤の掘削が容易に
可能となると共に、斯かる地盤への矢板の圧入を迅速且
つ容易にしかも所定位置に正確に行うことができる。そ
してこの場合、掘削ビット９として、掘削ビットを地盤
中から引き抜く際に該掘削ビットが矢板１０に衝突しな
いように偏心した偏心掘削ビット９を用いるため、掘削
孔（図５に１７Ａ，１７Ｂで示す）の内径を十分大き
く、矢板幅Ｗと同等あるいはそれ以上に形成することが
でき、従って矢板１０の圧入を容易に行えると共に、直
進性を維持して所定位置に正確に打ち込むことができ
る。According to the press-fitting method of the above-mentioned embodiment, the rotary impact action of the excavation bit 9 rotated by the excavation main shaft 5 and impacted by the down-the-hole hammer 8 excavates the ground to form an excavation hole and a sheet pile. Since 10 is driven in, it becomes possible to easily excavate hard or ultra-hard ground where rock, boulders, concrete, etc. are present, and press-fitting of sheet piles into such ground is quick, easy, and prescribed. Can be done exactly in position. In this case, since the eccentric digging bit 9 is used as the digging bit 9 so as to prevent the digging bit from colliding with the sheet pile 10 when the digging bit is pulled out from the ground, the digging holes (shown by 17A and 17B in FIG. 5). 2) can be formed to have a sufficiently large inner diameter and to have a width equal to or larger than the width W of the sheet pile. Therefore, the sheet pile 10 can be easily press-fitted and can be accurately driven into a predetermined position while maintaining straightness.
【００２３】特に、この実施例の圧入工法によれば、ビ
ットの回転による最大軌跡円Ｓの直径が矢板幅Ｗとほぼ
同一の偏心掘削ビット９を用いて、第１矢板１０Ａ、第
２矢板１０Ｂ、第３矢板１０Ｃ等々を上述したような方
法で圧入するため、隣合う掘削孔（例えば１７Ａ、１７
Ｂ）間に掘削残し部分を形成することなく有効に掘削孔
を掘削できると共に、既に圧入された例えば第１矢板１
０Ａに対し第２矢板１０Ｂの圧入を行う際に、この第２
矢板１０Ｂが圧入される掘削孔１７Ｂを掘削する偏心掘
削ビット９がこれに隣接する第１矢板１０Ａの継手用係
合部１０ａに衝当することがない。因みに、偏心掘削ビ
ット９が既に圧入された矢板１０の継手用係合部に衝当
するようなことがあれば、その継手用係合部が変形した
り損傷して、矢板１０を地盤中から引き抜く場合にその
引き抜き作業に非常な困難を伴うことになる上、矢板１
０の再使用ができなくなる。その点、上記工法による
と、矢板１０の継手用係合部の変形や損傷を防止でき
て、矢板１０の引き抜き時作業に困難を伴わず、矢板１
０を何回も使用できる。Particularly, according to the press-fitting method of this embodiment, by using the eccentric excavating bit 9 in which the diameter of the maximum trajectory circle S due to the rotation of the bit is substantially the same as the sheet pile width W, the first sheet pile 10A and the second sheet pile 10B are used. , The third sheet pile 10C and the like are press-fitted by the method as described above, so that the adjacent drill holes (for example, 17A, 17
B) The excavation hole can be effectively excavated without forming an unexcavation residual portion between them, and the already press-fitted first sheet pile 1
When press-fitting the second sheet pile 10B to 0A,
The eccentric excavation bit 9 for excavating the excavation hole 17B into which the sheet pile 10B is press-fitted does not hit the joint engaging portion 10a of the first sheet pile 10A adjacent thereto. By the way, if the eccentric excavation bit 9 hits against the joint engaging portion of the sheet pile 10 that has already been press-fitted, the joint engaging portion is deformed or damaged, and the sheet pile 10 is removed from the ground. When pulling out, the pulling work will be extremely difficult and the sheet pile 1
0 cannot be reused. On the other hand, according to the above-mentioned construction method, it is possible to prevent the joint engaging portion of the sheet pile 10 from being deformed or damaged, and the sheet pile 1 can be pulled out without difficulty during the work of pulling out the sheet pile 10.
You can use 0 many times.
【００２４】以上の実施例では、矢板１０を掘削装置１
のみによって圧入するようにしたが、前記偏心掘削ビッ
ト９の回転打撃作用によって掘削を行うと同時に、圧入
用の油圧シリンダ、あるいはワイヤー式やチェーンドラ
イブ式の絞り込み手段を用いて矢板１０を強制的に圧入
することによって、矢板１０の圧入作業をより一層効率
良く行うことができる。In the above embodiment, the sheet pile 10 is used for the excavation device 1.
Although the press-fitting is performed only by using the eccentric drilling bit 9, the rotary impact of the eccentric drilling bit 9 is used to perform the drilling, and at the same time, the sheet pile 10 is forcibly forced by using a press-fitting hydraulic cylinder or a wire-type or chain-drive-type narrowing means. By press-fitting, the press-fitting work of the sheet pile 10 can be performed further efficiently.
【００２５】また、この偏心掘削ビット９は、前述のよ
うに掘削主軸５の駆動による回転作用とダウンザホール
ハンマー８による打撃作用とによって掘削を行うもので
あるから、図２に示すように例えば地盤Ｇの下部層に岩
盤Ｇｏが存在する場合、その岩盤Ｇｏを容易に掘削する
ことができる。また、偏心掘削ビット９のビット本体９
ａの外周面及び底面には多数の突起１３が設けてあるた
め、岩盤Ｇｏの掘削には特に有効である。Since the eccentric excavating bit 9 excavates by the rotating action by the drive of the excavating main shaft 5 and the striking action by the down-the-hole hammer 8 as described above, as shown in FIG. If rock Go is present in the lower layer of the rock, Go can be easily excavated. Also, the bit body 9 of the eccentric drilling bit 9
Since a large number of protrusions 13 are provided on the outer peripheral surface and the bottom surface of a, it is particularly effective for excavating the rock Go.
【００２６】図６及び図７は、２本の掘削主軸１８，１
９（図７参照）を備え、両掘削主軸１８，１９にそれぞ
れケーシング２０，２１を外嵌装備し、各掘削主軸１
８，１９の先端部に、矢板１０の打ち込み完了後に矢板
１０に衝突しないように地盤中から引き抜き可能な偏心
掘削ビット２２，２３をダウンザホールハンマー２４，
２５を介して設けると共に、両偏心掘削ビット２２，２
３のそれぞれの回転により一部重複するように形成され
る２つの軌跡円Ｓａ，Ｓｂからなる複合軌跡円Ｓｏの最
大幅Ｈが矢板幅Ｗとほぼ同一である多軸掘削装置を用い
て、矢板１０の圧入を行う工法の実施例を示したもので
ある。この場合、両偏心掘削ビット２２，２３は、回転
時に衝当しないように、互いに高低差をもって掘削主軸
１８，１９側に取付けられる（図６参照）。FIGS. 6 and 7 show two excavating spindles 18, 1.
9 (see FIG. 7), casings 20 and 21 are fitted on both excavating spindles 18 and 19, respectively.
Eccentric excavation bits 22 and 23, which can be pulled out from the ground so as not to collide with the sheet pile 10 after the completion of the driving of the sheet pile 10, are provided at the tip portions of the down hammer 8 and 19.
25 and both eccentric drilling bits 22, 2
Using a multi-axis excavator in which the maximum width H of a compound trajectory circle So formed of two trajectory circles Sa and Sb formed so as to partially overlap by each rotation of 3 is substantially the same as the sheet pile width W, sheet piles are used. 10 shows an example of a construction method in which 10 is press-fitted. In this case, both the eccentric excavating bits 22 and 23 are mounted on the excavating spindles 18 and 19 side with a height difference so as not to hit each other during rotation (see FIG. 6).
【００２７】しかして、この圧入工法においては、先
ず、多軸掘削装置を地上の所定箇所に配置して、図７の
左側に示すように、第１矢板１０Ａを、その一方の継手
用係合部１０ａが前記複合軌跡円Ｓｏの軌跡円Ｓａ内に
位置し且つ他方の継手用係合部１０ｂが該複合軌跡円Ｓ
ｏの軌跡円Ｓｂの外に位置するように両ケーシング２
０，２１に支持させる。そして、先の実施例と同様にオ
ーガマシンにより掘削主軸１８，１９を回転駆動して、
偏心掘削ビット２２，２３を互いに逆方向に回転すると
共に、各偏心掘削ビット２２，２３をダウンザホールハ
ンマー２４，２５によって打撃しつつ地盤を掘削しなが
ら、第１矢板１０Ａを地盤中所定深度まで圧入する。In this press-fitting method, however, first, the multi-spindle excavator is arranged at a predetermined position on the ground, and the first sheet pile 10A is engaged with one of the joints as shown on the left side of FIG. The portion 10a is located within the trajectory circle Sa of the compound trajectory circle So, and the other joint engaging portion 10b is the compound trajectory circle S.
Both casings 2 so that they are located outside the locus circle Sb of o.
Support 0,21. Then, as in the previous embodiment, the excavating spindles 18 and 19 are rotationally driven by the auger machine,
While excavating the ground while rotating the eccentric drilling bits 22 and 23 in opposite directions and striking the eccentric drilling bits 22 and 23 with the down-the-hole hammers 24 and 25, the first sheet pile 10A is press-fitted to a predetermined depth in the ground. .
【００２８】次いで、多軸掘削装置を、ほぼ矢板幅Ｗ分
図７の右方へ前進させ、第２矢板１０Ｂを第１矢板１０
Ａと逆向きに両ケーシング２０，２１に支持すると共
に、第２矢板１０Ｂの一方の継手用係合部１０ｂを前記
複合軌跡円Ｓｏの軌跡Ｓｂの外に位置させて、既に掘削
された掘削孔内に位置する第１矢板１０Ａの継手用係合
部１０ａに係合させ且つ第２矢板１０Ｂの他方の継手用
係合部１０ａを前記複合軌跡円Ｓｏの軌跡円Ｓａ内に位
置させた状態で、各偏心掘削ビット２２，２３により地
盤を掘削しながら第２矢板１０Ｂを圧入する。以降は、
上記の工程を繰り返し行えばよい。Next, the multi-axis excavator is advanced to the right in FIG. 7 by the width of the sheet pile W, and the second sheet pile 10B is moved to the first sheet pile 10.
An excavation hole that has already been excavated by supporting the casings 20 and 21 in the opposite direction to A and locating the one joint engaging portion 10b of the second sheet pile 10B outside the trajectory Sb of the compound trajectory circle So. In a state in which it is engaged with the joint engaging portion 10a of the first sheet pile 10A located inside and the other joint engaging portion 10a of the second sheet pile 10B is located within the trajectory circle Sa of the compound trajectory circle So. The second sheet pile 10B is press-fitted while excavating the ground by the eccentric excavation bits 22 and 23. Later,
The above steps may be repeated.
【００２９】この実施例の圧入工法も、両偏心掘削ビッ
ト２２，２３のそれぞれの回転により一部重複するよう
に形成される２つの軌跡円Ｓａ，Ｓｂからなる複合軌跡
円Ｓｏの最大幅Ｈが矢板幅Ｗとほぼ同一である２つの偏
心掘削ビット２２，２３を用いて、矢板１０の圧入を行
うようにするため、隣合う掘削孔間に掘削残し部分を形
成することなく有効に掘削孔を掘削できると共に、既に
圧入された例えば第１矢板１０Ａに対し第２矢板１０Ｂ
の圧入を行う際に、この第２矢板１０Ｂが圧入される掘
削孔を掘削する一方の偏心掘削ビット２３が、これに隣
接する第１矢板１０Ａの継手用係合部１０ａに衝当する
ようなことがない。Also in the press-fitting method of this embodiment, the maximum width H of the compound locus circle So composed of two locus circles Sa and Sb formed so as to partially overlap each other by the rotations of the eccentric excavation bits 22 and 23, respectively. In order to press-fit the sheet pile 10 by using the two eccentric excavation bits 22 and 23 having substantially the same width as the sheet pile width W, the excavation hole is effectively formed without forming the unexcavation residual portion between the adjacent excavation holes. The second sheet pile 10B can be excavated and the second sheet pile 10B is already pressed into the first sheet pile 10A, for example.
One of the eccentric excavating bits 23 for excavating the excavation hole into which the second sheet pile 10B is press fitted hits the joint engaging portion 10a of the first sheet pile 10A adjacent thereto when performing the press-fitting. Never.
【００３０】この実施例では、２本の掘削主軸１８，１
９を備えた多軸掘削装置を使用したが、３本以上の掘削
主軸を有する多軸掘削装置を使用することができるもの
で、各掘削主軸に下端側にそれぞれ偏心掘削ビットを取
付ければよい。しかして、このような多軸掘削装置によ
る圧入工法によれば、矢板幅Ｗの広い大型の矢板１０の
打ち込みに最適である。即ち、大型の矢板１０の場合、
単軸の掘削装置を使用すると、１つの偏心掘削ビットに
より掘削される掘削孔の内径が大きくなって必要以上に
地盤が掘削される傾向にあるが、上記のような多軸掘削
装置の使用によれば、複数の偏心掘削ビットによって横
方向につながる横長の複合軌跡円Ｓｏで掘削孔が形成さ
れることになるから、矢板１０の圧入に必要な最低限の
大きさの地盤を掘削できる利点があり、更には複数の偏
心掘削ビットの組み合わせによって、種々の形状、大き
さの矢板１０に対応できる利点もある。In this embodiment, two excavating spindles 18, 1 are used.
Although the multi-spindle excavator provided with No. 9 is used, a multi-spindle excavator having three or more excavation spindles can be used, and an eccentric excavation bit may be attached to the bottom end of each excavation spindle. . However, the press-fitting method using such a multi-axis excavator is optimal for driving a large sheet pile 10 having a wide sheet pile width W. That is, in the case of a large sheet pile 10,
When a single-axis drilling device is used, the inner diameter of the drilling hole drilled by one eccentric drill bit tends to be large, and the ground tends to be drilled more than necessary. According to this, since the excavation hole is formed by the laterally long compound trajectory circle So that is connected in the lateral direction by the plurality of eccentric excavation bits, there is an advantage that the minimum size ground required for press-fitting the sheet pile 10 can be excavated. There is also an advantage that a plurality of eccentric drill bits can be combined to cope with the sheet piles 10 of various shapes and sizes.
【００３１】以上図１〜図７で示した実施例の矢板打ち
込み工法では、偏心掘削ビットが固定形状の偏心掘削ビ
ットを使用したが、本発明の工法では、このような固定
形状の偏心掘削ビットに限らず、図８及び図９に示すよ
うに形態が変化するタイプの偏心掘削ビットを使用する
こともできる。In the sheet pile driving method of the embodiment shown in FIGS. 1 to 7 above, the eccentric excavating bit whose eccentric excavating bit has a fixed shape is used, but in the method of the present invention, such an eccentric excavating bit having a fixed shape is used. Not limited to this, an eccentric drilling bit of a type whose shape is changed as shown in FIGS. 8 and 9 can also be used.
【００３２】例えば、図８に示す偏心掘削ビット２６
は、先行ビット２６ａと偏心ビット２６ｂと本体部２６
ｃからなるもので、矢板１０を支持するケーシング６内
に挿入された掘削主軸（図示せず）の下端部にダウンザ
ホールハンマー８を介して取付けられる。このビット２
６を、同図の（Ａ）に示すように掘削回転方向に回転さ
せるときは、偏心ビット２６ｂが突出し掘削主軸の回転
中心軸に対し偏心して回転することになり、また逆転さ
せると、偏心ビット２６ｂが同図の（Ｂ）に示すように
内向き半径方向にたたみ込まれて回転中心軸と同心状に
となり、ケーシング６内に収容可能となる。For example, the eccentric drill bit 26 shown in FIG.
Is the leading bit 26a, the eccentric bit 26b, and the body portion 26.
It is made of c and is attached to the lower end of an excavating main shaft (not shown) inserted in the casing 6 supporting the sheet pile 10 via a down-the-hole hammer 8. This bit 2
When 6 is rotated in the excavation rotation direction as shown in (A) of the figure, the eccentric bit 26b projects and rotates eccentrically with respect to the rotation center axis of the excavation main shaft, and when it is reversed, the eccentric bit 26b. 26b is folded inward in the radial direction so as to be concentric with the central axis of rotation as shown in FIG.
【００３３】また、図９に示す偏心掘削ビット２７は、
本体部２７ａと、２個（または３個）に分割構成された
ビットヘッド２７ｂ，２７ｂとからなるもので、矢板１
０を支持するケーシング６内に挿入された掘削主軸の下
端部にダウンザホールハンマー８を介して取付けられ
る。このビット２７は、同図（Ａ）に示すように掘削回
転方向に回転させるときは、両ビットヘッド２７ｂ，２
７ｂが外向きにスライドして偏心状に拡径し、また逆転
させると、内向きにスライドして同図の（Ｂ）に示すよ
うに縮径し、ケーシング６内に納まることになる。Further, the eccentric drilling bit 27 shown in FIG.
The sheet pile 1 is composed of a main body 27a and bit heads 27b, 27b divided into two (or three).
It is attached via a down-the-hole hammer 8 to the lower end of the excavation main shaft inserted in a casing 6 that supports 0. When the bit 27 is rotated in the excavation rotation direction as shown in FIG.
When 7b slides outward to expand the diameter eccentrically, and when it is reversed, it slides inward and contracts as shown in FIG.
【００３４】以上の実施例では、エア圧によって駆動さ
れるダウンザホールハンマーについて説明したが、本発
明の矢板の圧入工法では、油圧によって駆動されるダウ
ンザホールハンマーを使用することもできる。Although the down-the-hole hammer driven by air pressure has been described in the above embodiments, the down-the-hole hammer driven by hydraulic pressure may be used in the press-fitting method of the sheet pile of the present invention.
【００３５】[0035]
【発明の効果】請求項１に係る矢板の圧入工法によれ
ば、岩盤、転石、コンクリート等の存在する硬質または
超硬質の地盤への矢板の圧入を、迅速且つ容易にしかも
所定位置に正確に行うことができる。また掘削ビット
は、矢板圧入完了後にビット本体が矢板に衝突すること
なく引き抜くことができるものであるから、その径を十
分に大きく、従って掘削孔の内径を矢板幅と同等あるい
はそれ以上に形成することができ、矢板の圧入を一層容
易に行えると共に、直進性を維持して所定位置に確実行
うことができる。According to the method of press-fitting a sheet pile according to claim 1, the sheet-sheet press-fitting into a hard or super-hard ground having rock, boulders, concrete, etc. can be performed quickly, easily and accurately at a predetermined position. It can be carried out. Further, since the excavation bit can be pulled out without the bit body colliding with the sheet pile after the completion of the press-fitting of the sheet pile, its diameter is sufficiently large, so that the inner diameter of the excavation hole is formed to be equal to or greater than the sheet pile width. Thus, the press-fitting of the sheet pile can be performed more easily, and the straightness can be maintained and the sheet pile can be reliably moved to a predetermined position.
【００３６】請求項２に係る矢板の圧入工法によれば、
各矢板の圧入完了後は、偏心掘削ビットを、圧入された
矢板先端に衝突しない位置まで回転させることにより、
偏心掘削ビットを矢板に沿って地盤中から容易に引き抜
くことができる。このように、掘削ビットを地盤中から
引き抜く際に該掘削ビットが矢板に衝突しないように偏
心した偏心掘削ビットを用いるため、掘削孔の内径を十
分に大きく形成でき、それにより矢板の圧入を容易に行
えると共に、直進性を維持して所定位置に正確に圧入す
ることができるが、特にこの請求項２の工法によれば、
隣合う掘削孔間に掘削残し部分を形成することなく有効
に掘削孔を掘削でき、また既に圧入された例えば第１矢
板に対し第２矢板の圧入を行う際に、この第２矢板が圧
入される掘削孔を掘削する偏心掘削ビットが、これに隣
接する第１矢板の継手用係合部に衝当することがなく、
従って矢板の継手用係合部の変形や損傷を防止できて、
矢板の引き抜き時作業を容易に行えると共に、矢板を何
回でも使用できる。According to the method for press-fitting a sheet pile according to claim 2,
After completing the press-fitting of each sheet pile, by rotating the eccentric drilling bit to a position where it does not collide with the press-fitted sheet pile tip,
The eccentric drilling bit can be easily pulled out from the ground along the sheet pile. As described above, since the eccentric drill bit is used so that the drill bit does not collide with the sheet pile when the drill bit is pulled out from the ground, the inner diameter of the drill hole can be formed sufficiently large, which facilitates press-fitting of the sheet pile. In addition to being able to do so, it is possible to accurately press fit into a predetermined position while maintaining straightness. In particular, according to the construction method of claim 2,
The excavation hole can be effectively excavated without forming an unexcavation residual portion between adjacent excavation holes, and when the second sheet pile is press-fitted into the already press-fitted first sheet pile, for example, this second sheet pile is press-fitted. The eccentric drill bit for drilling the drill hole does not hit the joint engaging portion of the first sheet pile adjacent thereto,
Therefore, it is possible to prevent deformation and damage of the joint engaging portion of the sheet pile,
The work of pulling out the sheet pile is easy and the sheet pile can be used any number of times.
【００３７】請求項３に係る矢板の圧入工法によれば、
上記請求項２の効果に加え、矢板幅の広い大型の矢板の
圧入施工において有効である。即ち、大型の矢板の場
合、単軸の掘削装置を使用すると、１つの偏心掘削ビッ
トにより掘削される掘削孔の内径が大きくなって必要以
上に地盤が掘削される傾向にあるが、この請求項３の工
法のように、多軸掘削装置の使用によると、複数の偏心
掘削ビットによって横方向につながる横長の複合軌跡円
で掘削孔が形成されることになるから、矢板の圧入に必
要な最低限の大きさの地盤を掘削できると共に、複数の
偏心掘削ビットの組み合わせによって、種々の形状、大
きさの矢板に対応できる。According to the method of press-fitting a sheet pile according to claim 3,
In addition to the effect of the second aspect, it is effective in press-fitting a large sheet pile having a wide sheet pile width. That is, in the case of a large sheet pile, if a single-axis excavating device is used, the inner diameter of the excavation hole that is excavated by one eccentric excavation bit becomes large, and the ground tends to be excavated more than necessary. When using a multi-axis drilling device like the construction method of No. 3, the drill hole is formed by a laterally long compound trajectory circle connected in the lateral direction by a plurality of eccentric drill bits, so the minimum required for press-fitting the sheet pile. It is possible to excavate the ground of a limit size, and it is possible to cope with sheet piles of various shapes and sizes by combining a plurality of eccentric excavation bits.
【図面の簡単な説明】[Brief description of drawings]
【図１】 本発明工法の実施に使用する掘削装置の側面
図である。FIG. 1 is a side view of an excavator used for carrying out the method of the present invention.
【図２】 同上の掘削装置の拡大側面図である。FIG. 2 is an enlarged side view of the excavation device of the above.
【図３】 偏心掘削ビットの拡大側面図である。FIG. 3 is an enlarged side view of an eccentric drill bit.
【図４】 図３に示される偏心掘削ビットの底面図であ
る。FIG. 4 is a bottom view of the eccentric drill bit shown in FIG.
【図５】 矢板の圧入工程を説明する拡大横断面図であ
る。FIG. 5 is an enlarged cross-sectional view illustrating a press-fitting step of the sheet pile.
【図６】 多軸掘削装置の使用による実施例を示す側面
図である。FIG. 6 is a side view showing an embodiment using a multi-axis drilling device.
【図７】 同上の多軸掘削装置の横断面図である。FIG. 7 is a cross-sectional view of the same multi-axis excavating device.
【図８】 他の偏心掘削ビットを示すもので、（Ａ）は
正転時に偏心した状態にある偏心掘削ビットの側面図、
（Ｂ）は逆転してたたみ込まれた偏心掘削ビットの側面
図である。FIG. 8 shows another eccentric drill bit, (A) is a side view of the eccentric drill bit in an eccentric state during forward rotation,
(B) is a side view of the eccentric excavating bit folded and inverted.
【図９】 更に他の偏心掘削ビットを示すもので、
（Ａ）は正転時に拡径して偏心した状態の偏心掘削ビッ
トを示す斜視図、（Ｂ）は逆転時に縮径した状態の偏心
掘削ビットを示す斜視図である。FIG. 9 shows yet another eccentric drilling bit,
(A) is a perspective view showing an eccentric excavating bit in a state of being expanded and eccentric during normal rotation, and (B) is a perspective view showing an eccentric excavating bit in a state of decreasing diameter during reverse rotation.
１ 掘削装置 ３ リーダ ４ オーガマシン ５ 掘削主軸 ６ ケーシング ８ ダウンザホールハンマー ９ 偏心掘削ビット ９ａ ビット本体 ９ｂ ビット軸部 １０ 矢板（総括名称） １０Ａ 矢板 １０Ｂ 矢板 １０Ｃ 矢板 １０ａ 継手用係合部 １０ｂ 継手用係合部 １３ 突起 １７Ａ 掘削孔 １７Ｂ 掘削孔 １８ 掘削主軸 １９ 掘削主軸 ２０ ケーシング ２１ ケーシング ２２ 偏心掘削ビット ２３ 偏心掘削ビット ２４ ダウンザホールハンマー ２５ ダウンザホールハンマー ２６ 偏心掘削ビット ２７ 偏心掘削ビット Ｏ 掘削主軸の回転中心軸 Ｗ 矢板の幅 ｗ 矢板の継手用係合部の幅 Ｓ 最大軌跡円 Ｈ 最大幅 Ｓｏ 複合軌跡円 1 excavator 3 leader 4 auger machine 5 excavation main shaft 6 casing 8 down the hole hammer 9 eccentric excavation bit 9a bit body 9b bit shaft part 10 sheet pile (general name) 10A sheet pile 10B sheet pile 10C sheet pile 10a joint engagement portion 10b joint engagement Part 13 Protrusion 17A Drilling Hole 17B Drilling Hole 18 Drilling Spindle 19 Drilling Spindle 20 Casing 21 Casing 22 Eccentric Drilling Bit 23 Eccentric Drilling Bit 24 Down the Hole Hammer 25 Down The Hole Hammer 26 Eccentric Drilling Bit 27 Eccentric Drilling Bit O Drilling Spindle Spindle W W Width w Width of the engaging part for joint of sheet pile S Maximum locus circle H Maximum width So Composite locus circle
Claims (3)
配設し、該掘削主軸にダウンザホールハンマーを備え且
つビット本体が偏心した偏心掘削ビットを取付け、ダウ
ンザホールハンマーにより打撃される偏心掘削ビットの
回転打撃作用によって地盤を掘削し、この掘削に追従し
て矢板を圧入するようにし、矢板の圧入完了後はビット
本体が矢板に衝突しないようにして地盤中から引き抜く
ようにした矢板の圧入工法。1. An eccentric excavating bit which is struck by a down-the-hole hammer, in which a sheet pile is arranged along a rotationally driven excavating spindle, a down-the-hole hammer is provided on the excavating spindle, and an eccentric excavating bit having an eccentric bit body is attached. A method of press-fitting a sheet pile by excavating the ground by a rotary impacting action, pressing the sheet pile following the excavation, and then pulling it out of the ground so that the bit body does not collide with the sheet pile after the completion of the press-fitting of the sheet pile.
外嵌装備すると共に、該掘削主軸の先端部に、ビットの
回転による最大軌跡円の直径が矢板幅とほぼ同一で矢板
圧入完了後にビット本体が矢板に衝突しないよう地盤中
から引き抜き可能な偏心掘削ビットをダウンザホールハ
ンマーを介して取付けた掘削装置を用い、第１矢板を、
その一方の継手用係合部が前記旋回軌跡円内に位置し且
つ他方の継手用係合部が該最大軌跡円の外に位置するよ
うにケーシングに支持して、ダウンザホールハンマーに
より打撃される偏心掘削ビットの回転打撃作用によって
地盤を掘削しながら第１矢板を圧入し、次いで掘削装置
をほぼ矢板幅分前進させ、第２矢板を第１矢板と逆向き
にケーシングに支持すると共に、第２矢板の一方の継手
用係合部を前記最大軌跡円の外に位置させて既掘削孔内
に位置する第１矢板の継手用係合部に係合させ且つ第２
矢板の他方の継手用係合部を前記最大軌跡円内に位置さ
せた状態で、偏心掘削ビットの回転打撃作用によって地
盤を掘削しながら第２矢板を圧入し、以降上記の工程を
繰り返し行うことを特徴とする矢板の圧入工法。2. The bit main body after the completion of press-fitting of the sheet pile, in which a casing is externally fitted to the excavating spindle that is rotationally driven, and the diameter of the maximum trajectory circle due to the rotation of the bit is substantially the same as the sheet pile width at the tip of the excavating spindle. Using an excavator equipped with an eccentric excavating bit that can be pulled out from the ground via Down The Hole Hammer so that it does not collide with the sheet pile,
An eccentricity that is supported by the casing so that one of the joint engaging portions is located inside the turning trajectory circle and the other joint engaging portion is outside the maximum trajectory circle, and is struck by the down-the-hole hammer. The first sheet pile is press-fitted while excavating the ground by the rotary striking action of the excavating bit, and then the excavation device is advanced by approximately the sheet pile width to support the second sheet pile in the casing in the opposite direction to the first sheet pile and the second sheet pile. One of the joint engaging portions is located outside the maximum trajectory circle to be engaged with the joint engaging portion of the first sheet pile located in the already excavated hole, and the second
With the other joint engaging portion of the sheet pile positioned in the maximum trajectory circle, the second sheet pile is press-fitted while excavating the ground by the rotary impact action of the eccentric excavating bit, and the above steps are repeated thereafter. A method of press-fitting a sheet pile.
れケーシングを外嵌装備し、各掘削主軸の先端部に、矢
板圧入完了後にビット本体が矢板に衝突しないように地
盤中から引き抜き可能な偏心掘削ビットをダウンザホー
ルハンマーを介して取付けると共に、これら偏心掘削ビ
ットのそれぞれの回転により一部重複するように形成さ
れる複合軌跡円の最大幅が矢板幅とほぼ同一である多軸
掘削装置を用い、第１矢板を、その一方の継手用係合部
が前記複合軌跡円内に位置し且つ他方の継手用係合部が
該複合軌跡円の外に位置するように複数のケーシングに
支持して、ダウンザホールハンマーにより打撃される各
偏心掘削ビットの回転打撃作用により地盤を掘削しなが
ら第１矢板を圧入し、次いで掘削装置をほぼ矢板幅分前
進させ、第２矢板を第１矢板と逆向きに複数のケーシン
グに指示すると共に、第２矢板の一方の継手用係合部を
前記複合軌跡円の外に位置させて、既掘削孔内に位置す
る第１矢板の継手用係合部に係合させ且つ第２矢板の他
方の継手用係合部を前記複合軌跡円内に位置させた状態
で、各掘削偏心ビットの回転打撃作用により地盤を掘削
しながら第２矢板を圧入し、以降上記の工程を繰り返し
行うことを特徴とする矢板の圧入工法。3. An eccentricity that allows a plurality of rotatively driven excavating spindles to be fitted with casings, respectively, and that the bit main body be pulled out from the ground at the tip of each excavating spindle so that the bit body does not collide with the sheet pile after completion of press-fitting the sheet pile. While mounting the drill bit through the down-the-hole hammer, using a multi-axis drilling device in which the maximum width of the compound trajectory circle formed so as to partially overlap by each rotation of these eccentric drill bits is almost the same as the sheet pile width, The first sheet pile is supported by a plurality of casings so that one of the joint engaging portions is located inside the composite trajectory circle and the other joint engaging portion is located outside the composite trajectory circle. The first sheet pile is press-fitted while excavating the ground by the rotating striking action of each eccentric excavating bit that is hit by the down the hole hammer, and then the excavating device is advanced by about the sheet pile width to move the second sheet pile. A joint for the first sheet pile that is positioned in the already-excavated hole by pointing the plurality of casings in the opposite direction to the first sheet pile and locating one joint engaging portion of the second sheet pile outside the complex trajectory circle. Second sheet pile while excavating the ground by the rotary striking action of each excavation eccentric bit, with the other joint engagement portion of the second sheet pile being positioned within the complex trajectory circle. The method of press-fitting a sheet pile is characterized in that the above steps are repeatedly carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7179047A JP2997402B2 (en) | 1995-07-14 | 1995-07-14 | Sheet pile press-in method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7179047A JP2997402B2 (en) | 1995-07-14 | 1995-07-14 | Sheet pile press-in method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0931980A true JPH0931980A (en) | 1997-02-04 |
| JP2997402B2 JP2997402B2 (en) | 2000-01-11 |
Family
ID=16059200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7179047A Expired - Lifetime JP2997402B2 (en) | 1995-07-14 | 1995-07-14 | Sheet pile press-in method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2997402B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100474184B1 (en) * | 2001-08-22 | 2005-03-08 | 주식회사 대창중기계 | Hitting machine to drive sheet pile deeply using auger |
| JP2011021374A (en) * | 2009-07-15 | 2011-02-03 | Tokunagagumi:Kk | Sheet pile jacking method |
| JP2013019260A (en) * | 2011-06-17 | 2013-01-31 | Nagaigumi Co Ltd | Drilling equipment and construction method for sheet pile |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5659252B2 (en) * | 2013-02-18 | 2015-01-28 | 株式会社オーク | Press fitting method of sheet pile |
| JP5409942B1 (en) * | 2013-02-25 | 2014-02-05 | 株式会社オーク | Press fitting method of sheet pile |
-
1995
- 1995-07-14 JP JP7179047A patent/JP2997402B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100474184B1 (en) * | 2001-08-22 | 2005-03-08 | 주식회사 대창중기계 | Hitting machine to drive sheet pile deeply using auger |
| JP2011021374A (en) * | 2009-07-15 | 2011-02-03 | Tokunagagumi:Kk | Sheet pile jacking method |
| JP2013019260A (en) * | 2011-06-17 | 2013-01-31 | Nagaigumi Co Ltd | Drilling equipment and construction method for sheet pile |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2997402B2 (en) | 2000-01-11 |
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