JP6899571B1 - Abdominal upright correction jig and mountain retaining wall construction method - Google Patents

Abdominal upright correction jig and mountain retaining wall construction method Download PDF

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JP6899571B1
JP6899571B1 JP2020208973A JP2020208973A JP6899571B1 JP 6899571 B1 JP6899571 B1 JP 6899571B1 JP 2020208973 A JP2020208973 A JP 2020208973A JP 2020208973 A JP2020208973 A JP 2020208973A JP 6899571 B1 JP6899571 B1 JP 6899571B1
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abdomen
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信平 安本
信平 安本
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株式会社エステクノ
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Abstract

【課題】側縁部が咬み合わされたハット形鋼矢板に適用することができ、腹起しと縦矢板との隙間をなくす腹起し矯正治具、及び、腹起し矯正治具を再利用しながら、施工精度が良く止水性能が良い築堤工事を短い工期で可能とさせる山留壁構築方法を提供する。【解決手段】腹起し矯正治具1に、軸体10と、軸体の一方の端部に装着される第1平板20と、他方の端部に装着される第2平板30と、伸縮手段40とを備えさせた。縦矢板110に穿孔された孔と、縦矢板に交差する方向に平行に配設され、腹起しをなす一対の水平部材120の間隙に前記軸体を挿し込み、第1平板を縦矢板の外面に、第2平板を腹起しの外面に当接させ、前記伸縮手段により二つの平板の距離を接近させることにより、前記縦矢板に前記腹起しを接しさせる。これを縦矢板の全長に亘って繰り返すことにより、短い工期で、施工精度が良く止水性能が良い山留壁を構築させることができる。【選択図】図1PROBLEM TO BE SOLVED: To reuse an abdominal upright correction jig and an abdominal upright correction jig which can be applied to a hat-shaped steel sheet pile in which side edges are occluded and eliminate the gap between the abdominal upset and the vertical sheet pile. At the same time, we provide a method for constructing a mountain retaining wall that enables embankment work with good construction accuracy and good water stopping performance in a short construction period. SOLUTION: An abdominal orthodontic jig 1 is expanded and contracted with a shaft body 10, a first flat plate 20 attached to one end of the shaft body, and a second flat plate 30 attached to the other end. The means 40 and the like are provided. The shaft body is inserted into the gap between the hole drilled in the vertical sheet pile 110 and the pair of horizontal members 120 which are arranged in parallel in the direction intersecting the vertical sheet pile and form an abdomen, and the first flat plate is inserted into the vertical sheet pile. The second flat plate is brought into contact with the outer surface of the abdomen, and the vertical sheet pile is brought into contact with the abdomen by bringing the two flat plates closer to each other by the expansion / contraction means. By repeating this over the entire length of the vertical sheet pile, it is possible to construct a mountain retaining wall with good construction accuracy and good water stopping performance in a short construction period. [Selection diagram] Fig. 1

Description

本発明は、二重締切鋼矢板壁による山留壁をなす縦矢板と腹起しの間に、隙間があかないように腹起しを矯正させる腹起し矯正治具及び山留壁構築工法に関する。詳細には、土砂を盛る空間を形成させる縦矢板と、縦矢板を水平に連結させる腹起しとの隙間をなくす腹起し矯正治具及び山留壁構築方法に関する。 The present invention relates to a swelling correction jig and a mountain retaining wall construction method for correcting swelling so that there is no gap between the vertical sheet pile forming the mountain retaining wall by the double deadline steel sheet pile wall and the swelling. .. More specifically, the present invention relates to a swelling correction jig for eliminating a gap between a vertical sheet pile forming a space for piled earth and sand and a swelling for horizontally connecting the vertical sheet piles, and a method for constructing a mountain retaining wall.

より詳細には、側縁部が咬み合わされたハット形鋼矢板に適用することができる腹起し矯正治具、及び、腹起し矯正治具を再利用しながら、施工精度が良く止水性能が良い築堤工事を短い工期で可能とさせる山留壁構築方法に関する。 More specifically, while reusing the abdominal upright correction jig that can be applied to the hat-shaped steel sheet pile with the side edges occluded and the abdominal upright correction jig, the construction accuracy is good and the water stopping performance is good. It is related to the method of constructing a mountain retaining wall that enables good embankment construction in a short period of time.

土砂の流出を抑制させる山留工事においては、地盤に垂直に打設させる縦矢板の側縁部の溝を、隣の矢板の側縁部の溝と咬み合わせて、一枚ずつ縦矢板を垂直方向に圧入させ、又は、振動させながら打設させて、縦矢板を連設させている。そして、縦矢板の表面又は裏面に所定の間隔で腕部材を固着させ、その腕部材に腹起しを水平に架け渡して縦矢板に固定させている。 In the mountain retaining work to suppress the outflow of earth and sand, the groove on the side edge of the vertical sheet pile to be placed vertically on the ground is engaged with the groove on the side edge of the adjacent sheet pile, and the vertical sheet piles are vertically placed one by one. Vertical sheet piles are continuously installed by press-fitting in the direction or driving while vibrating. Then, the arm members are fixed to the front surface or the back surface of the vertical sheet pile at predetermined intervals, and the abdomen is horizontally hung on the arm members and fixed to the vertical sheet pile.

構造物の地下部分を構築するために地盤を掘削する場合には、向かい合う腹起しを突っ張る切梁と称されている水平部材が、腹起しに水平方向に架設され、縦矢板が内側に倒壊されないようにされている。一方、堤防を構築する等のために盛土工事をする場合には、向かい合う山留壁を内側に引っ張る引張部材が張り渡され、縦矢板が外側に倒壊されないようにされている。 When excavating the ground to construct the underground part of the structure, a horizontal member called a girder that stretches the abdomen facing each other is erected horizontally on the abdomen, and the vertical sheet pile is inside. It is designed not to collapse. On the other hand, when embankment work is carried out to construct an embankment, a pulling member that pulls the facing mountain retaining walls inward is stretched to prevent the vertical sheet pile from collapsing outward.

盛土工事をするための縦矢板は、地盤から高く突設された状態に打設されるため、腹起しを架け渡す工事、引張部材を張り渡す工事をする場合には、仮設足場や高所作業車を使って作業がされている。引張部材は水平方向に所定の間隔で必要であるため、順次、仮設足場等を移動させて、向かい合う縦矢板に引張部材を張り渡している。そのため、引張部材を張り渡すだけでも、時間と手間がかかっている。 Since the vertical sheet piles for embankment work are placed so that they are projected high from the ground, temporary scaffolding or aerial places are used when carrying out work to hang up the abdomen or to stretch the tension members. Work is being done using a work platform. Since the tension members are required at predetermined intervals in the horizontal direction, the temporary scaffolding and the like are sequentially moved to stretch the tension members to the vertical sheet piles facing each other. Therefore, it takes time and effort just to stretch the tension member.

更に、縦矢板と腹起しの隙間をなくし、施工精度の高い山留壁とするために、従来は、重いチェーンブロックを使って、引張部材に沿って、腹起しが縦矢板に引寄せられていた。チェーンブロックとは、本体から延びるフック付きチェーンを引っ張る対象物に装着させ、レバー操作によりチェーンを緊張させる引き寄せ具である。腹起しを引っ張ることができる大型のチェーンブロックは、重量が約25kgと重いため、仮設足場等を使って、複数の作業員により作業する必要があり、時間と手間がかかっていた。 Furthermore, in order to eliminate the gap between the vertical sheet pile and the raised wall and to make a mountain retaining wall with high construction accuracy, conventionally, a heavy chain block was used to pull the raised sheet to the vertical sheet pile along the tension member. Was there. The chain block is a pulling tool that attaches a chain with a hook extending from the main body to an object to be pulled and tensions the chain by operating a lever. Since the large chain block that can pull the abdomen is heavy at about 25 kg, it is necessary to work by a plurality of workers using a temporary scaffolding or the like, which takes time and effort.

特許文献1には、地盤を掘削する場合の山留工法において、基準をなす支柱に固着された腹起しに、縦矢板を固定具により固定させる技術が開示されている。この技術は、側端縁が溝により咬み合わされていない、並列されただけの縦矢板を、腹起しに強固に固定させる固定具の技術とされている。 Patent Document 1 discloses a technique for fixing a vertical sheet pile with a fixture to an abdomen fixed to a support column which forms a reference in a mountain retaining method for excavating the ground. This technique is said to be a technique of a fixture that firmly fixes vertical sheet piles, which are only arranged in parallel and whose side edge is not occluded by a groove, to the abdomen.

この技術によれば、挟持片と抱持片からなる固定具を使って、腹起しに固定させた挟持片と、縦矢板に接する抱持片とをボルトとナットを使って、縦矢板と腹起しと引き寄せて固定させている。この技術の適用対象は並列されただけの縦矢板であるため、ボルトによる小さな引張力でも、縦矢板を腹起しに引き寄せて固定することができた。 According to this technique, using a fixture consisting of a holding piece and a holding piece, the holding piece fixed to the abdomen and the holding piece in contact with the vertical sheet pile are bolted and nutted to the vertical sheet pile and the belly. It is pulled up and pulled to fix it. Since the application target of this technology is the vertical sheet piles that are only arranged in parallel, the vertical sheet piles could be pulled and fixed to the abdomen even with a small tensile force by the bolt.

しかし、この技術を適用するためには、隣合う縦矢板との間に、ボルトを通す隙間が必要であり、高い土砂流出抑制機能が求められている、隣合う縦矢板の側縁部が咬み合わされる形式の縦矢板には適用することができず、また、矢板を取外さない限り固定具を再利用できないという課題があった。 However, in order to apply this technology, a gap for passing bolts is required between the adjacent vertical sheet piles, and the side edges of the adjacent vertical sheet piles, which are required to have a high sediment outflow control function, bite. There is a problem that it cannot be applied to the vertical sheet pile of the type to be combined, and the fixture cannot be reused unless the sheet pile is removed.

特許文献2には、地盤に垂直に打ち込まれた支持杭と、支持杭に接して上下多段に積まれた横矢板とを、がたつきなく係止させる係止金具の技術が開示されている。この係止金具は、上下に積まれる横矢板の隙間を貫通する水平板状部を備え、水平板状部が矢板の外方側に突出される突出部に腹起しの挟持部を有すると共に、矢板の内方側に上下両側に屈曲された矢板の挟持部を有している。 Patent Document 2 discloses a technique of a locking metal fitting that locks a support pile that is driven vertically into the ground and a horizontal sheet pile that is in contact with the support pile and is stacked in multiple upper and lower stages without rattling. .. This locking metal fitting is provided with a horizontal plate-shaped portion that penetrates the gap between the horizontal sheet piles that are stacked vertically, and the horizontal plate-shaped portion has an abdominal holding portion at the protruding portion that protrudes to the outside of the sheet pile. , It has a holding portion of the sheet pile bent on both the upper and lower sides on the inner side of the sheet pile.

特許文献1と同様に、この技術も、矢板と矢板との間に、水平板状部を通す隙間が必要であるため、高い土砂流出抑制機能が求められる咬み合わされた縦矢板には適用することができず、また、矢板を取外さない限り固定具が再利用できないという課題があった。 Similar to Patent Document 1, this technique also requires a gap for passing a horizontal plate-like portion between the sheet piles, and therefore, it should be applied to an occluded vertical sheet pile that requires a high sediment outflow control function. There was also a problem that the fixture could not be reused unless the sheet pile was removed.

矢板を縦方向に打設させる特許文献1に記載の技術、又は、矢板を横方向に積み重ねる特許文献2の技術のいずれによっても、矢板と矢板との隙間から土砂の流出を十分に抑制することができなかった。そのため側縁部が咬み合わされた縦矢板に適用できると共に、腹起しを縦矢板に隙間なく接しさせ、高い土砂流出抑制機能を有すると共に高い施工精度の山留壁を構築させることができる技術の開発が課題とされていた。 By either the technique described in Patent Document 1 in which the sheet piles are driven in the vertical direction or the technique in Patent Document 2 in which the sheet piles are stacked in the horizontal direction, the outflow of earth and sand from the gap between the sheet piles is sufficiently suppressed. I couldn't. Therefore, it can be applied to the vertical sheet pile with the side edges occluded, and the abdomen can be brought into contact with the vertical sheet pile without any gaps, and it has a high sediment outflow control function and can construct a mountain retaining wall with high construction accuracy. Development was an issue.

更には、豪雨による堤防の決壊が多発する気象が発生しやすくなり、決壊した堤防の復旧がより短い工期で可能となるように、施工精度が良く止水性能が良い堤防の嵩上げ工事が短い工期で可能となる山留壁を構築させる技術の開発が喫緊の課題とされている。 Furthermore, the construction period for raising the embankment with good construction accuracy and good water stopping performance is short so that the weather where the embankment breaks frequently due to heavy rain is likely to occur and the collapsed embankment can be restored in a shorter construction period. The development of technology to build a mountain levee that is possible in Japan is an urgent issue.

特開2006−009422号公報Japanese Unexamined Patent Publication No. 2006-009422 特開2005−240463号公報Japanese Unexamined Patent Publication No. 2005-240463

本発明が解決しようとする課題は、側縁部が咬み合わされたハット形鋼矢板に適用することができ、腹起しと縦矢板との隙間をなくす腹起し矯正治具、及び、腹起し矯正治具を再利用しながら、施工精度が良く止水性能が良い築堤工事を短い工期で可能とさせる山留壁構築方法を提供することである。 The problem to be solved by the present invention can be applied to a hat-shaped steel sheet pile in which the side edges are occluded, and an abdominal raising correction jig that eliminates the gap between the abdominal raising and the vertical sheet pile, and an abdominal raising. It is to provide a method for constructing a mountain retaining wall that enables embankment work with good construction accuracy and good water stopping performance in a short construction period while reusing the straightening jig.

本発明の第1の発明は、側縁部が咬み合わされると共に地中から突出されて二重締切鋼矢板壁をなすハット形鋼矢板の頂部に装着される腹起し矯正治具であって、前記ハット形鋼矢板が前記腹起しに面しない側を第1の面とし、前記腹起しに面する側を第2の面とし、軸体と、第1平板と、第2平板と、伸縮手段とを含み、前記軸体が、前記ハット形鋼矢板に穿孔された孔に貫通されると共に、前記ハット形鋼矢板の第2の面に沿って平行に配設された一対の水平部材からなる腹起しの間隙に挿通され、第1平板が、前記軸体の一方の端部に装着されて第1の面に当接され、第2平板が、前記軸体の他方の端部に装着されて前記一対の水平部材の夫々に係り、前記伸縮手段が、伸縮装置と、前記伸縮装置を装着させる細長枠体とからなり、前記細長枠体が、長手方向の一方の端枠の外方に前記軸体を固着させ、第1平板が前記軸体に固着され、第2平板が前記細長枠体の中で、前記軸体の軸方向に沿ってスライド可能に保持され、第2平板の縁部が、前記細長枠体の上下方向に突出されて前記一対の水平部材の夫々に係り、前記伸縮装置が、前記細長枠体の長手方向の他方の端枠と第2平板との間に装着され、前記軸体を固着させた細長枠体の先方が、前記間隙に挿し込まれた状態で、伸長手段として作用され、第2平板が腹起しを押圧して、前記腹起しを第1平板に接近させ、前記ハット形鋼矢板の第2の面に前記腹起しを接しさせ、前記ハット形鋼矢板と前記腹起しが固着されてから、前記伸縮装置が縮退手段として作用され、第1平板が前記軸体から脱離され、前記伸縮手段が前記頂部に着脱可能とされていることを特徴としている。 The first invention of the present invention is an abdominal correction jig attached to the top of a hat-shaped steel sheet pile that is engaged with the side edges and protrudes from the ground to form a double-cut section steel sheet pile wall. The side of the hat-shaped steel sheet pile not facing the abdomen is the first surface, the side facing the abduction is the second surface, and the shaft body, the first flat plate, and the second flat plate are , The shaft body is penetrated through the hole drilled in the hat-shaped steel sheet pile, and is arranged in parallel along the second surface of the hat-shaped steel sheet pile. The first flat plate is attached to one end of the shaft body and abutted against the first surface, and the second flat plate is attached to the other end of the shaft body. Each of the pair of horizontal members is attached to the portion, and the expansion / contraction means comprises an expansion / contraction device and an elongated frame body on which the expansion / contraction device is attached, and the elongated frame body is one end frame in the longitudinal direction. The shaft body is fixed to the outside of the shaft body, the first flat plate is fixed to the shaft body, and the second flat plate is slidably held in the elongated frame body along the axial direction of the shaft body. The edges of the two flat plates are projected in the vertical direction of the elongated frame and engage with each of the pair of horizontal members, and the expansion / contraction device includes the other end frame of the elongated frame in the longitudinal direction and the second flat plate. The tip of the elongated frame body attached between the two and fixed to the shaft body acts as an extension means in a state of being inserted into the gap, and the second flat plate presses the abdomen to press the abdomen. The raising and contracting device retracts after the raising is brought close to the first flat plate, the raising is brought into contact with the second surface of the hat-shaped steel sheet pile, and the hat-shaped steel sheet pile and the raising are fixed. It is characterized in that it acts as a means, the first flat plate is detached from the shaft body, and the telescopic means is detachable from the top.

ハット形鋼矢板からなる縦矢板は側縁部が咬み合された状態で、先方が良好な地盤まで打設されるため、水平方向に高い剛性を有する。縦矢板に交差する方向に配設される腹起しをなす一対の水平部材は、溝形鋼が好適であるが限定されず、縦矢板をなすハット形鋼矢板より水平剛性が低い鋼材とされればよい。水平部材は、縦矢板の内面又は外面に、二列に平行に沿って配列される。盛土工事のための縦矢板は、盛土の土圧により縦矢板が外に傾倒しないように、タイロッドと称されている引張部材により、縦矢板が内方に傾かない程度の適度の張力で内方側に引寄せられている。 The vertical sheet pile made of a hat-shaped steel sheet pile has high rigidity in the horizontal direction because the side edges are occluded and the tip is driven to a good ground. As the pair of horizontal members forming the abdomen arranged in the direction intersecting the vertical sheet pile, channel steel is suitable but not limited, and the horizontal rigidity is lower than that of the hat-shaped steel sheet pile forming the vertical sheet pile. Just do it. The horizontal members are arranged in two rows parallel to the inner or outer surface of the vertical sheet pile. The vertical sheet pile for embankment work is inward with a moderate tension so that the vertical sheet pile does not tilt inward by a tension member called a tie rod so that the vertical sheet pile does not tilt outward due to the earth pressure of the embankment. It is drawn to the side.

縦矢板は、石などの地盤内の障害物の抵抗を受けて地盤に打設されるため、縦矢板の面は設計位置から僅かにずれやすく、縦矢板と交差する方向に配列される腹起しと縦矢板との間には隙間があきやすい。従来は、その隙間にくさび材を挿し込む、又は縦矢板に腹起し全体を接しさせるために、チェーンブロックを使って腹起しを縦矢板に引寄せるようにしていた。チェーンブロックは重く、且つ、足場又は高所作業車を使って作業する必要があるため、複数の作業員が共同して作業しても、作業時間が長くなりやすく、工程を短縮できない要因の一つとなっていた。 Since the vertical sheet pile is driven into the ground due to the resistance of obstacles in the ground such as stones, the surface of the vertical sheet pile is easily displaced from the design position, and the vertical sheet pile is arranged in the direction intersecting the vertical sheet pile. There is a tendency for a gap to open between the stone and the vertical sheet pile. In the past, a chain block was used to pull the abdomen to the vertical sheet pile in order to insert a wedge material into the gap or to raise the abdomen to the vertical sheet pile and bring it into contact with the whole. Since the chain block is heavy and it is necessary to work using scaffolding or aerial work platforms, even if multiple workers work together, the work time tends to be long and the process cannot be shortened. It was one.

本発明の第1の発明においては、平行に配設された腹起しをなす一対の水平部材の間隙に軸体が挿通され、第2平板が一対の水平部材の夫々に架けられているため、小型・軽量の伸縮手段であっても、一対の腹起しをなす部材、例えば、上下対称に設けられた溝形鋼に、均等に外力を作用させることができる。そのため、腹起しよりも強度が高く変形しにくい縦矢板に、いずれの水平部材も捻じれ座屈を生じさせることなく接しさせることができ、腹起しと縦矢板とに隙間を発生させない。なお、伸縮手段は、第1平板と第2平板との距離を接近させればよく、伸長されても、又は、縮退されてもよく、限定されない。 In the first invention of the present invention, the shaft body is inserted into the gap between the pair of horizontal members forming the abdomen arranged in parallel, and the second flat plate is hung on each of the pair of horizontal members. Even with a small and lightweight telescopic means, an external force can be evenly applied to a pair of raising members, for example, channel steels provided vertically symmetrically. Therefore, any of the horizontal members can be brought into contact with the vertical sheet pile, which is stronger than the abdomen and is hard to be deformed, without causing twisting and buckling, and no gap is generated between the abdomen and the vertical sheet pile. The expansion / contraction means may be extended or degenerated, and is not limited as long as the distance between the first plate and the second plate is reduced.

本発明の第1の発明によれば、水平部材をねじれ座屈させることなく、伸縮手段が小型・軽量であってもよいため、一人の作業員でも、腹起し矯正治具を移動できることに加えて、腹起しに近接した位置で、安全に腹起しと縦矢板との隙間を矯正することができる。 According to the first invention of the present invention, since the expansion / contraction means may be small and lightweight without twisting and buckling the horizontal member, even one worker can move the abdominal correction jig. In addition, the gap between the abdomen and the vertical sheet pile can be safely corrected at a position close to the abdomen.

これにより、土砂流出を発生させないように側縁部が咬み合わされているハット形鋼矢板においても、腹起しを縦矢板に接しさせて、施工精度が良く止水性能が良い山留壁を構築することができると共に、工期を短縮することができるという従来にない有利な効果を奏する。 As a result, even in a hat-shaped steel sheet pile whose side edges are occluded so as not to cause sediment outflow, the abdomen is brought into contact with the vertical sheet pile to construct a mountain retaining wall with good construction accuracy and good water stopping performance. At the same time, the construction period can be shortened, which is an unprecedented advantageous effect.

伸縮手段が、伸縮装置と、前記伸縮装置を装着させる細長枠体とからなり、腹起し矯正治具が、細長枠体と、伸長装置と、軸体と、第1平板と、第2平板とからなり、その夫々が近接した位置に配されている簡単な構成とされている。伸縮装置が、細長枠体の中で細長枠体に沿って伸長手段として作用され、腹起しに接している第2平板を腹起しに押し当てて、腹起しの間隙と縦矢板の孔に挿通されている軸体に張力を作用させて、縦矢板に固着されている第1平板を引き寄せて、腹起しと縦矢板の隙間をなくさせる。 The expansion / contraction means includes an expansion / contraction device and an elongated frame body on which the expansion / contraction device is mounted, and the abdominal erection correction jig includes an elongated frame body, an extension device, a shaft body, a first flat plate, and a second flat plate. It is a simple configuration in which each of them is arranged in close proximity. The telescopic device acts as an extension means along the elongated frame in the elongated frame, and presses the second flat plate in contact with the abdomen against the abdomen, and the gap between the abdomen and the vertical sheet pile. Tension is applied to the shaft body inserted through the hole to pull the first flat plate fixed to the vertical sheet pile, and to eliminate the gap between the abdomen and the vertical sheet pile.

これにより、装着作業から腹起し矯正作業、取外し作業までの作業が容易であり、盛土工事の工程の短縮化を図ることができるという有利な効果を奏する。 As a result, the work from the mounting work to the abdominal correction work and the removal work is easy, and there is an advantageous effect that the embankment work process can be shortened.

本発明の第2の発明は、第1の発明の腹起し矯正治具において、前記伸縮装置が、シリンダー形式の伸縮装置とされ、前記細長枠体が、前記伸縮装置を格納させる格納部を有し、前記格納部のうち少なくとも一つの側面が開放され、前記伸縮装置が着脱可能とされていることを特徴としている。 In the second invention of the present invention, in the abdominal upright straightening jig of the first invention, the telescopic device is a cylinder type telescopic device, and the elongated frame provides a storage portion for accommodating the telescopic device. It is characterized in that at least one side surface of the storage portion is opened so that the telescopic device can be attached and detached.

第2の発明では、伸縮装置が、押しラムと称されている外筒と内筒からなるシリンダー形式の伸縮装置とされている。シリンダー形式の伸縮手段は油圧駆動が好適であるが機械式であってもよく、限定されない。細長枠体が、押しラムを格納させるための細長い枠体とされ、開放された側面から伸縮装置を着脱可能とさせ、伸縮手段の構成部品の主要部品が小型化・軽量化される。細長枠体を山留壁に取り付けてから伸縮装置を装着させればよい。主要部品が小型化・軽量化されることにより、腹起し矯正治具が、運搬しやすいと共に山留壁に装着しやすく、安全に作業できると共に工期の短縮を図ることができる。 In the second invention, the expansion / contraction device is a cylinder-type expansion / contraction device including an outer cylinder and an inner cylinder, which is called a push ram. The cylinder type telescopic means is preferably hydraulically driven, but may be mechanical and is not limited. The elongated frame is an elongated frame for storing the push ram, and the expansion / contraction device can be attached / detached from the open side surface, so that the main components of the expansion / contraction means are reduced in size and weight. After attaching the elongated frame to the mountain retaining wall, the telescopic device may be attached. By reducing the size and weight of the main parts, the abdominal orthodontic jig can be easily carried and attached to the mountain retaining wall, and the work can be carried out safely and the construction period can be shortened.

本発明の第3の発明は、第1の発明の腹起し矯正治具において、前記伸縮装置が、シリンダー形式の伸縮装置とされ、前記細長枠体に予め格納され一体とされていることを特徴としている。第3の発明の腹起し矯正治具は、一体とされているため、組み付ける手間が省け、作業性がよい。 According to a third aspect of the present invention, in the uplifting correction jig of the first invention, the telescopic device is a cylinder type telescopic device, which is stored in advance in the elongated frame and integrated. It is a feature. Since the abdominal swelling correction jig of the third invention is integrated, the labor of assembling can be saved and the workability is good.

本発明の第4の発明は、側縁部が咬み合わされると共に地中から突出されて二重締切鋼矢板壁をなすハット形鋼矢板の頂部に装着される腹起し矯正治具であって、前記ハット形鋼矢板が前記腹起しに面しない側を第1の面とし、前記腹起しに面する側を第2の面とし、軸体と、第1平板と、第2平板と、伸縮手段とを含み、前記軸体が、前記ハット形鋼矢板に穿孔された孔に貫通されると共に、前記ハット形鋼矢板の第2の面に沿って平行に配設された一対の水平部材からなる腹起しの間隙に挿通され、第1平板が、前記軸体の一方の端部に装着されて、第1の面に当接され、第2平板が、前記軸体の他方の端部に装着されて、前記一対の水平部材の夫々に係り、前記伸縮手段が、伸縮装置と、前記伸縮装置を装着させる細長枠体とからなり、第2平板の縁部が、前記細長枠体の上下方向に突出されて前記一対の水平部材の夫々に係り、第1平板又は第2平板の一方が前記軸体に固着され、第1平板又は第2平板の他方が、前記軸体の軸方向に沿ってスライド可能に遊嵌され、前記細長枠体が、一方の端枠を第1平板又は第2平板とし、前記一方の端枠に前記軸体を挿通させる孔を有し、前記伸縮装置が、前記細長枠体の他方の端枠と、前記一方の端枠の孔から挿通された前記軸体の端部とに固着されると共に、縮退手段として作用され、前記軸体に張力を作用させ、固着された第1平板又は第2平板と、スライド可能に遊嵌された第1平板又は第2平板との距離を接近させ、前記ハット形鋼矢板の第2の面に前記腹起しを接しさせ、前記ハット形鋼矢板と前記腹起しが固着されてから、前記伸縮装置が伸長手段として作用され、スライド可能に遊嵌された第1平板又は第2平板が脱離され、前記伸縮手段が前記頂部に着脱可能とされていることを特徴としている。 A fourth aspect of the present invention is an abdominal correction jig that is attached to the top of a hat-shaped steel sheet pile that has side edges that are occluded and protrudes from the ground to form a double-cut section steel sheet pile wall. The side of the hat-shaped steel sheet pile not facing the abdomen is the first surface, the side facing the abduction is the second surface, and the shaft body, the first flat plate, and the second flat plate are , The shaft body is penetrated through the hole drilled in the hat-shaped steel sheet pile, and is arranged in parallel along the second surface of the hat-shaped steel sheet pile. The first flat plate is attached to one end of the shaft body and abutted against the first surface, and the second flat plate is the other end of the shaft body. It is attached to an end portion and is engaged with each of the pair of horizontal members. The expansion / contraction means comprises an expansion / contraction device and an elongated frame body on which the expansion / contraction device is attached, and an edge portion of the second flat plate is the elongated frame. One of the first flat plate or the second flat plate is fixed to the shaft body, and the other of the first flat plate or the second flat plate is the shaft body. The slender frame is slidably fitted along the axial direction, and the elongated frame has one end frame as a first flat plate or a second flat plate, and the one end frame has a hole through which the shaft body is inserted. The telescopic device is fixed to the other end frame of the elongated frame body and the end portion of the shaft body inserted through the hole of the one end frame, and acts as a retracting means to tension the shaft body. To bring the fixed first plate or second plate closer to the slidably loosely fitted first plate or second plate, and to bring the antinode to the second surface of the hat-shaped steel sheet pile. After the raised parts are brought into contact with each other and the hat-shaped steel sheet pile and the raised part are fixed to each other, the expansion / contraction device acts as an extension means, and the slidably loosely fitted first plate or second plate is detached. The telescopic means is removable from the top.

第4の発明では、伸縮装置が縮退手段として作用される。伸縮装置は、引きラムと称されている外筒と内筒からなるシリンダー形式の縮退手段が好適であるが限定されず、機械的な縮退手段であってもよい。細長枠体の形状は、伸縮装置を格納させ、伸縮装置を縮退させることができる形状であればよい。縦矢板と腹起しとを、第1平板と第2平板とで挟ませた状態で、縮退手段が縮退されることにより第1平板と第2平板との距離を接近させる。 In the fourth invention, the telescopic device acts as a degenerate means. The expansion / contraction device is preferably, but is not limited to, a cylinder-type degeneracy means including an outer cylinder and an inner cylinder, which is called a pull ram, and may be a mechanical degeneracy means. The shape of the elongated frame may be any shape as long as the telescopic device can be stored and the telescopic device can be retracted. With the vertical sheet pile and the abdomen sandwiched between the first flat plate and the second flat plate, the degenerate means is degenerated to bring the distance between the first flat plate and the second flat plate closer.

第4の発明によれば、縦矢板の内外のいずれに腹起しが装着されているかにかかわらず、第1の面又は第2の面のいずれの側に細長枠体を配設させてもよい。すなわち山留壁の構成にかかわらず、腹起し矯正治具の装着の向きを、作業性に応じて選択することができる。これにより作業性が向上され、工期の短縮を図ることができる。 According to the fourth invention, regardless of whether the abdomen is mounted on the inside or outside of the vertical sheet pile, the elongated frame may be arranged on either the first surface or the second surface. Good. That is, regardless of the configuration of the mountain retaining wall, the orientation of mounting the abdominal correction jig can be selected according to the workability. As a result, workability is improved and the construction period can be shortened.

本発明の第5の発明は、第1から第3の発明の腹起し矯正治具において、更に、雌ねじ体を含み、前記軸体の一方の端部に、雄ねじ部が備えられ、前記雌ねじ体が、第1平板に穿孔された孔に挿通された前記雄ねじ部に螺着され、前記一方の端部に第1平板が付着され、前記軸体の他方の端部に前記伸縮手段が装着されることを特徴としている。 A fifth aspect of the present invention is the abdomen-raising orthodontic jig of the first to third inventions, further including a female screw body, and a male screw portion is provided at one end of the shaft body, and the female screw body is provided. The body is screwed into the male screw portion inserted into the hole drilled in the first flat plate, the first flat plate is attached to the one end portion, and the expansion / contraction means is attached to the other end portion of the shaft body. It is characterized by being done.

第5の発明では、軸体の端部に備えさせた雄ねじ部に、第1平板を挿通させてから雌ねじ体を螺合することにより、第1平板の内面と第2平板の内面との距離を、腹起しの外面と縦矢板の外面との距離に適合させやすい。これにより、作業性が向上され、工期の短縮を図ることができる。 In the fifth invention, the distance between the inner surface of the first flat plate and the inner surface of the second flat plate is formed by inserting the first flat plate into the male screw portion provided at the end of the shaft body and then screwing the female screw body. Is easy to adapt to the distance between the outer surface of the abdomen and the outer surface of the vertical sheet pile. As a result, workability can be improved and the construction period can be shortened.

本発明の第6の発明は、側縁部が咬み合わされたハット形鋼矢板と、前記ハット形鋼矢板に沿って平行に配設された一対の水平部材からなる腹起しとにより二重締切鋼矢板壁を構築させる山留壁構築工法であって、地中から突出されたハット形鋼矢板の頂部に装着された、第1から第3の腹起し矯正治具の伸縮装置が伸長手段として作用され、第2平板が前記ハット形鋼矢板の第2の面に前記腹起しを接しさせる工程を第1の工程とし、前記ハット形鋼矢板と前記腹起しを固着させる工程を第2の工程とし、前記伸縮装置が縮退手段として作用され、スライド可能に遊嵌されていた第2平板が脱離されて、前記頂部から前記腹起し矯正治具が取り外される工程を第3の工程とし、前記ハット形鋼矢板の頂部の異なる位置においても、第1の工程から第3の工程が繰り返されて、前記ハット形鋼矢板の水平方向全長に亘って前記腹起しを接しさせることを特徴としている。 The sixth invention of the present invention is a double deadline by a hat-shaped steel sheet pile whose side edges are occluded and an abdomen composed of a pair of horizontal members arranged in parallel along the hat-shaped steel sheet pile. It is a mountain retaining wall construction method for constructing a steel sheet pile wall, and an expansion / contraction device for first to third abdominal raising correction jigs mounted on the top of a hat-shaped steel sheet pile protruding from the ground is an extension means. The first step is the step of bringing the second flat plate into contact with the second surface of the hat-shaped steel sheet pile, and the step of fixing the hat-shaped steel sheet pile and the raised portion is the first step. The third step is the step in which the telescopic device acts as a retracting means, the second flat plate slidably fitted is detached, and the abdominal upright straightening jig is removed from the top. As a step, even at different positions on the top of the hat-shaped steel sheet pile, the first step to the third step are repeated so that the raised parts are brought into contact with each other over the entire length of the hat-shaped steel sheet pile in the horizontal direction. It is characterized by.

本発明の第7の発明は、側縁部が咬み合わされたハット形鋼矢板と、前記ハット形鋼矢板に沿って平行に配設された一対の水平部材からなる腹起しとにより二重締切鋼矢板壁を構築させる山留壁構築工法であって、地中から突出されたハット形鋼矢板の頂部に装着された、第4の発明の腹起し矯正治具の伸縮装置が縮退手段として作用され、第2平板が前記ハット形鋼矢板の第2の面に前記腹起しを接しさせる工程を第1の工程とし、前記ハット形鋼矢板と前記腹起しを固着させる工程を第2の工程とし、前記伸縮装置が伸長手段として作用され、スライド可能に遊嵌されていた第1平板又は第2平板が脱離されて、前記頂部から前記腹起し矯正治具が取り外される工程を第3の工程とし、前記ハット形鋼矢板の頂部の異なる位置においても、第1の工程から第3の工程が繰り返されて、前記ハット形鋼矢板の水平方向全長に亘って前記腹起しを接しさせることを特徴としている。 The seventh invention of the present invention is a double deadline by a hat-shaped steel sheet pile whose side edges are occluded and an abdomen composed of a pair of horizontal members arranged in parallel along the hat-shaped steel sheet pile. It is a mountain retaining wall construction method for constructing a steel sheet pile wall, and the expansion / contraction device of the uplifting correction jig of the fourth invention mounted on the top of the hat-shaped steel sheet pile protruding from the ground is used as a retracting means. The step of bringing the second flat plate into contact with the second surface of the hat-shaped steel sheet pile is the first step, and the step of fixing the hat-shaped steel sheet pile and the raised portion is the second step. The step is a step in which the telescopic device acts as an extension means, the first flat plate or the second flat plate slidably loosely fitted is detached, and the abdominal upright straightening jig is removed from the top. As the third step, even at different positions on the top of the hat-shaped steel sheet pile, the first step to the third step are repeated to raise the abdomen over the entire horizontal length of the hat-shaped steel sheet pile. It is characterized by being in contact with each other.

縦矢板に一対の水平部材を接しさせ、縦矢板と一対の水平部材とを固着させる方法は、溶接であってもよく、ボルト固定であってもよい。本発明の第6又は第7の発明によれば、腹起し矯正治具を再利用しながら、短い工期で、施工精度が良く止水性能が良い築堤工事が可能になるという有利な効果を奏する。 The method of bringing a pair of horizontal members into contact with the vertical sheet pile and fixing the vertical sheet pile and the pair of horizontal members may be welding or bolt fixing. According to the sixth or seventh invention of the present invention, it is possible to carry out embankment work with good construction accuracy and good water stopping performance in a short construction period while reusing the abdominal correction jig. Play.

・第1の発明によれば、施工精度が良く止水性能が良い山留壁を構築することができると共に、工期を短縮することができるという従来にない有利な効果を奏する。また、装着作業から腹起し矯正作業、取外し作業までの作業が容易であり、盛土工事の工程の短縮化を図ることができるという有利な効果を奏する。
・第2の発明によれば、腹起し矯正治具が、運搬しやすいと共に山留壁に装着しやすく、安全に作業できると共に工期の短縮を図ることができる。
-According to the first invention, it is possible to construct a mountain retaining wall having good construction accuracy and good water stopping performance, and it is possible to shorten the construction period, which is an unprecedented advantageous effect. In addition, the work from mounting work to abdominal correction work and removal work is easy, and it has an advantageous effect that the embankment work process can be shortened.
-According to the second invention, the abdominal upright correction jig is easy to carry and is easy to be attached to the mountain retaining wall, and it is possible to work safely and shorten the construction period.

・第3の発明によれば、一体とされているため、組み付ける手間が省け、作業性がよい。
・第4の発明によれば、腹起し矯正治具の装着の向きを、作業性に応じて選択することができる。これにより作業性が向上され、工期の短縮を図ることができる。
・第5の発明によれば、作業性が向上され、工期の短縮を図ることができる。
・第6又は第7の発明によれば、腹起し矯正治具を再利用しながら、短い工期で、施工精度が良く止水性能が良い築堤工事が可能になるという有利な効果を奏する。
-According to the third invention, since it is integrated, the labor of assembling can be saved and the workability is good.
-According to the fourth invention, the orientation of mounting the abdomen correction jig can be selected according to the workability. As a result, workability is improved and the construction period can be shortened.
-According to the fifth invention, workability is improved and the construction period can be shortened.
-According to the sixth or seventh invention, it is possible to carry out the embankment work with good construction accuracy and good water stopping performance in a short construction period while reusing the abdominal swelling correction jig.

腹起し矯正治具とハット形鋼矢板と腹起しの平面図及び断面図(実施例1)。The plan view and the cross-sectional view of the abdomen correction jig, the hat-shaped steel sheet pile, and the abdomen (Example 1). 腹起し矯正治具と伸縮手段をなす押しラムの説明図(実施例1)。An explanatory view of a push ram forming an abdominal correction jig and an expansion / contraction means (Example 1). 二重締切鋼矢板壁による山留壁構築工法の工程図(実施例1)。FIG. 6 is a process chart of a mountain retaining wall construction method using a double-cut-off steel sheet pile wall (Example 1). 腹起し矯正治具と伸縮手段をなす引きラムの説明図(実施例2)。An explanatory view of a pulling ram forming an abdominal correction jig and an expansion / contraction means (Example 2). 腹起し矯正治具の使用方法の説明図(実施例2)。Explanatory drawing of how to use the abdomen correction jig (Example 2). 腹起し矯正治具と伸縮手段をなす機械式ジャッキの説明図(実施例3)。An explanatory view of a mechanical jack forming an abdominal correction jig and an expansion / contraction means (Example 3).

側縁部が咬み合わされ並列に打設されると共に地中から突出されて二重締切鋼矢板壁をなすハット形鋼矢板に腹起しを接しさせる腹起し矯正治具に、軸体と、軸体の一方の端部に装着される第1平板と、他方の端部に装着される第2平板と、伸縮手段とを備えさせた。縦矢板をなすハット形鋼矢板に穿孔された孔と、縦矢板に交差する方向に平行に配設された一対の水平部材からなる腹起しの間隙に前記軸体を挿し込み、第1平板を縦矢板の外面に、第2平板を腹起しの外面に当接させ、前記伸縮手段により二つの平板の距離を接近させることにより、前記縦矢板に前記腹起しを接しさせる。縦矢板と一対の水平部材を固着させてから縦矢板から腹起し矯正治具を取り外す。これを縦矢板の水平方向全長に亘って繰り返すことにより、短い工期で、施工精度が良く止水性能が良い山留壁を構築させることができる。 The side edges are occluded and driven in parallel, and at the same time, the shaft body and the shaft body are used as an abdominal correction jig that makes the abdomen come into contact with the hat-shaped steel sheet pile that forms the double deadline steel sheet pile wall. A first flat plate attached to one end of the shaft body, a second flat plate attached to the other end, and expansion / contraction means are provided. The shaft body is inserted into a gap between a hole drilled in a hat-shaped steel sheet pile forming a vertical sheet pile and a pair of horizontal members arranged in parallel in a direction intersecting the vertical sheet pile, and the first flat plate is inserted. The second flat plate is brought into contact with the outer surface of the vertical sheet pile, and the two flat plates are brought into contact with the vertical sheet pile by the stretching means. After fixing the vertical sheet pile and the pair of horizontal members, raise the abdomen from the vertical sheet pile and remove the correction jig. By repeating this over the entire horizontal direction of the vertical sheet pile, it is possible to construct a mountain retaining wall with good construction accuracy and good water stopping performance in a short construction period.

実施例1においては、伸縮手段が、縦矢板と腹起しを接近させる際に伸長手段として作用される伸縮装置と伸縮装置を装着させる細長枠体とからなる腹起し矯正治具1と、腹起し矯正治具1を使用した二重締切鋼矢板壁による山留壁構築工法とを、図1から図3を参照して説明する。図1は、山留壁100と腹起し矯正治具1の説明図を示している。図1(A)図は、山留壁と腹起し矯正治具の平面図を示している。図1(B)図は、図1(A)図のA−A位置における垂直方向断面図を示している。図1(A)図においては、異なる位置に移動させた腹起し矯正治具9と、縦矢板を内側に引っ張る引張部材130とを破線で示している。 In the first embodiment, the expansion / contraction means includes an expansion / contraction device that acts as an extension means when the vertical sheet pile and the abdomen are brought close to each other, and an elongated frame body on which the expansion / contraction device is attached. A method of constructing a mountain retaining wall using a double-cut-off steel sheet pile wall using a raising straightening jig 1 will be described with reference to FIGS. 1 to 3. FIG. 1 shows an explanatory view of a mountain retaining wall 100 and an abdominal erection correction jig 1. FIG. 1 (A) shows a plan view of a mountain retaining wall and an abdominal orthodontic jig. FIG. 1 (B) shows a vertical sectional view taken along the line AA of FIG. 1 (A). In FIG. 1 (A), the abdominal upright correction jig 9 moved to a different position and the pulling member 130 for pulling the vertical sheet pile inward are shown by broken lines.

図2は、腹起し矯正治具と伸縮装置を伸長手段として作用させる場合の説明図を示している。図2(A)図は、腹起し矯正治具に伸縮装置を格納させる前の状態を示し、図2(B)図は、第2平板を後方側から看た図を示している。図2(C)図と図2(D)図は、図1(A)図のA−A位置における垂直方向断面図であり、一対の腹起しと縦矢板との隙間をなくす工程の説明図を示している。図3の各図は山留壁構築工法の工程図を示している。 FIG. 2 shows an explanatory view when the abdomen correction jig and the expansion / contraction device are operated as extension means. FIG. 2 (A) shows a state before the telescopic device is stored in the abdominal orthodontic jig, and FIG. 2 (B) shows a view of the second flat plate viewed from the rear side. 2 (C) and 2 (D) are vertical cross-sectional views at positions AA of FIG. 1 (A), and a description of a process of eliminating a gap between a pair of raised abdomen and a vertical sheet pile. The figure is shown. Each figure of FIG. 3 shows a process diagram of the mountain retaining wall construction method.

まず、山留壁について図1を参照して簡単に説明する。築堤工事等において構築される山留壁100は、側縁部が咬み合わされて並列に地盤に打設されたハット形鋼矢板からなる縦矢板110が、向かい合って配設されている(図3(A)図参照)。並列された縦矢板110,110・・・に、所望の間隔をあけて支持部材111が固着される。一対の水平部材120が前記支持部材111に架け渡され、縦矢板110に交差する方向に並行に配設され、腹起しとされている(図1参照)。 First, the mountain retaining wall will be briefly described with reference to FIG. In the mountain retaining wall 100 constructed in the embankment work or the like, vertical sheet piles 110 made of hat-shaped steel sheet piles whose side edges are occluded and placed in parallel on the ground are arranged facing each other (FIG. 3 (FIG. 3). A) See figure). The support members 111 are fixed to the vertically arranged vertical sheet piles 110, 110, ... At desired intervals. A pair of horizontal members 120 are bridged over the support member 111, arranged in parallel in a direction intersecting the vertical sheet pile 110, and raised up (see FIG. 1).

実施例1においては、幅が約90cmの縦矢板の側縁部112を咬み合わせて山留壁100を構築させる場合を例に説明する。縦矢板110の水平断面形状は、中央平坦部113の両側が折り曲げられた傾斜部114とされ、傾斜部の外端から平坦な側縁部112が外方に向けて延びている。縦矢板の側縁部112の外端には、隣り合う縦矢板110,110が咬み合わされる溝部をなす継ぎ手115が備えられている。縦矢板の幅、水平断面形状等はこれに限定されず、いずれの形態の縦矢板が使用されてもよい。 In the first embodiment, a case where the side edge portion 112 of the vertical sheet pile having a width of about 90 cm is occluded to construct the mountain retaining wall 100 will be described as an example. The horizontal cross-sectional shape of the vertical sheet pile 110 is an inclined portion 114 in which both sides of the central flat portion 113 are bent, and a flat side edge portion 112 extends outward from the outer end of the inclined portion. At the outer end of the side edge portion 112 of the vertical sheet pile, a joint 115 forming a groove into which adjacent vertical sheet piles 110 and 110 are engaged is provided. The width of the vertical sheet pile, the horizontal cross-sectional shape, and the like are not limited to this, and any form of vertical sheet pile may be used.

縦矢板110には、前記引張部材130を挿し込む孔116が、側縁部112と中央平坦部113とに穿設されている(図1参照)。この引張部材を挿し込む孔116が、腹起し矯正部材1をなす軸体10を挿通させる孔として使用される(図1(B)図参照)。 In the vertical sheet pile 110, holes 116 into which the tension member 130 is inserted are formed in the side edge portion 112 and the central flat portion 113 (see FIG. 1). The hole 116 into which the tension member is inserted is used as a hole through which the shaft body 10 forming the abdominal correction member 1 is inserted (see FIG. 1 (B)).

一対の水平部材120は、上下対称に設けられた一対の溝形鋼121,121とされる(図1参照)。夫々の溝形鋼121,121は、前記引張部材130の軸を挿通可能な間隙122をあけて、複数の連結板123により一体にされている(図1(B)図参照)。一対の水平部材120は、異なる高さに固着された支持部材により、分離された二つの溝形鋼が間隙をあけて支持されてもよい。一対の水平部材をなす部材は、前記の一対の溝形鋼に限定されず、例えばH形鋼であってもよい。 The pair of horizontal members 120 are a pair of channel steels 121 and 121 provided vertically symmetrically (see FIG. 1). The channel steels 121 and 121 are integrated by a plurality of connecting plates 123 with a gap 122 through which the shaft of the tension member 130 can be inserted (see FIG. 1 (B)). In the pair of horizontal members 120, two separated channel steels may be supported with a gap by support members fixed at different heights. The members forming the pair of horizontal members are not limited to the above-mentioned pair of channel steels, and may be, for example, H-shaped steels.

ハット形鋼矢板からなる縦矢板110は、地盤に振動又は圧入されながら打設されるため、施工誤差により中央平坦部113の出入りが異なっている(図1(A)図参照)。そのため、一対の水平部材120を支持部材111に架け渡した段階においては、縦矢板110と一対の水平部材120との間に、縦矢板ごとに異なった大きさの隙間200,201があいている(図1(A)図参照)。 Since the vertical sheet pile 110 made of a hat-shaped steel sheet pile is driven while being vibrated or press-fitted into the ground, the central flat portion 113 moves in and out differently due to a construction error (see FIG. 1 (A)). Therefore, at the stage where the pair of horizontal members 120 are bridged over the support member 111, gaps 200 and 201 having different sizes are formed between the vertical sheet pile 110 and the pair of horizontal members 120 for each vertical sheet pile. (See FIG. 1 (A)).

次に、腹起し矯正治具1の構成と、前記隙間200をなくして縦矢板110に一対の水平部材120を接しさせる作業とを、図1と図2とを参照して説明する。腹起し矯正治具1は、軸体10と、軸体の一方の端部に装着されて縦矢板外面に当接される第1平板20と、軸体の他方の端部に装着されて、一対の水平部材の夫々の外面124,124に当接される第2平板30と、伸縮手段40と、雌ねじ体とを含んでいる(図1,図2(A)図参照)。以下、理解を容易にするため、伸縮手段40が配されていない側を腹起し矯正治具1の先方とし、伸縮手段40が配される側を後方として説明する。 Next, the configuration of the abdominal upright straightening jig 1 and the work of removing the gap 200 and bringing the pair of horizontal members 120 into contact with the vertical sheet pile 110 will be described with reference to FIGS. 1 and 2. The abdominal correction jig 1 is attached to the shaft body 10, the first flat plate 20 which is attached to one end of the shaft body and abuts on the outer surface of the vertical sheet pile, and the other end of the shaft body. A second flat plate 30 abutting on the outer surfaces 124 and 124 of the pair of horizontal members, a telescopic means 40, and a female screw body are included (see FIGS. 1 and 2 (A)). Hereinafter, in order to facilitate understanding, the side on which the telescopic means 40 is not arranged will be described as the front side of the orthodontic jig 1, and the side on which the telescopic means 40 is arranged will be described as the rear side.

実施例1においては、伸縮手段40が、シリンダー形式の伸縮装置をなす押しラム41と、細長枠体50とされる例を説明する(図2(A)図参照)。押しラム41とは、油圧発生部300のレバーハンドル301を上下させて発生させた油圧により、シリンダー軸42を伸長させる油圧ジャッキである(図2(A)図矢印a参照)。発生させた油圧を解除させると、押しラムに内蔵されたスプリング等の弾発手段により、シリンダー軸が伸長方向とは反対方向に縮退される。本発明に適用される押しラムは、押圧力が50kN以上とされると腹起しを矯正させやすい。 In the first embodiment, an example in which the expansion / contraction means 40 is a push ram 41 forming a cylinder-type expansion / contraction device and an elongated frame body 50 will be described (see FIG. 2A). The push ram 41 is a hydraulic jack that extends the cylinder shaft 42 by the hydraulic pressure generated by moving the lever handle 301 of the hydraulic pressure generating unit 300 up and down (see arrow a in FIG. 2A). When the generated oil pressure is released, the cylinder shaft is degenerated in the direction opposite to the extension direction by the elastic means such as a spring built in the push ram. The push ram applied to the present invention can easily correct the abdomen when the push pressure is 50 kN or more.

細長枠体50をなす先方端枠51,後方端枠52と一対の側枠53,53とに囲まれた格納部54は、シリンダー軸42を縮めた状態の押しラム41よりも長く、押しラムと共に格納される第2平板30が格納部51の中でスライド可能とされている(図2(A)図両方向矢印b参照)。細長枠体50の高さは、一対の腹起しの間隙122に先方部を挿し込むことができればよく限定されない(図2(C)図参照)。格納部54の底部には、格納された押しラムを支える支持部55が備えられる。 The storage portion 54 surrounded by the front end frame 51, the rear end frame 52, and the pair of side frames 53, 53 forming the elongated frame body 50 is longer than the push ram 41 in the state where the cylinder shaft 42 is contracted, and the push ram is longer. The second flat plate 30 stored together with the second flat plate 30 is slidable in the storage portion 51 (see the bidirectional arrow b in FIG. 2A). The height of the elongated frame 50 is not limited as long as the front portion can be inserted into the pair of raised gaps 122 (see FIG. 2C). The bottom of the storage portion 54 is provided with a support portion 55 that supports the stored push ram.

前記押しラム41を格納させる細長枠体50の大きさは限定されないが、実施例1においては作業員が一人で容易に運搬ができるように長さが約60cm、幅が約10cm、高さが約10cmとさせた。細長枠体をなす長手方向の一方の端枠(先方端枠51)と他方の端枠(後方端枠52)とは、大きな押圧力がかかっても変形されにくいように板厚が約3cmの鋼板とさせた。各々の側枠53,53は重量が大きくならないように端枠よりも薄い約1cmの鋼板とさせ、先方端枠と後方端枠に溶接等により固着させている。 The size of the elongated frame 50 for storing the push ram 41 is not limited, but in the first embodiment, the length is about 60 cm, the width is about 10 cm, and the height is high so that the worker can easily carry the push ram 41 by himself / herself. It was set to about 10 cm. One end frame (front end frame 51) and the other end frame (rear end frame 52) in the longitudinal direction forming an elongated frame have a plate thickness of about 3 cm so as not to be deformed even when a large pressing force is applied. It was made of steel plate. Each side frame 53, 53 is made of a steel plate of about 1 cm thinner than the end frame so as not to increase the weight, and is fixed to the front end frame and the rear end frame by welding or the like.

軸体10は、後方端部11が細長枠体50の先方端枠51の外方に固着されている(図2(A)図参照)。軸体10の長さは限定されないが、高所でも作業がしやすいように約40cmの長さとさせ、軸径は縦矢板に穿設された孔116(図2(C)図参照)に挿通可能な約5cmとさせた。この軸体10と前記細長枠体50とを合わせた重量が約5kgであり、押しラム41の重量が約2kgであり、一人の作業員で運搬が容易な重量である。 The rear end portion 11 of the shaft body 10 is fixed to the outside of the front end frame 51 of the elongated frame body 50 (see FIG. 2 (A)). The length of the shaft body 10 is not limited, but the length is set to about 40 cm so that the work can be easily performed even at a high place, and the shaft diameter is inserted into the hole 116 (see FIG. 2C) drilled in the vertical sheet pile. It was set to about 5 cm, which is possible. The combined weight of the shaft body 10 and the elongated frame body 50 is about 5 kg, and the weight of the push ram 41 is about 2 kg, which is a weight that can be easily transported by one worker.

軸体10は全長に亘って雄ねじ部12を備え、軸体の軸方向のいずれの位置にも第1平板20を固着可能とさせている。これにより、縦矢板の中央平坦部113の位置で一対の水平部材120を引き寄せる場合のように、縦矢板110から軸体10が長く突き出される場合にも適用させることができる(図1(A)図破線で示す腹起し矯正治具9参照)。なお、雄ねじ部12は軸体10の先方だけに備えられてもよい。 The shaft body 10 is provided with a male screw portion 12 over the entire length, and the first flat plate 20 can be fixed to any position in the axial direction of the shaft body. Thereby, it can be applied to the case where the shaft body 10 is projected long from the vertical sheet pile 110, such as the case where the pair of horizontal members 120 are pulled at the position of the central flat portion 113 of the vertical sheet pile (FIG. 1 (A). ) See the abdomen correction jig 9 shown by the broken line in the figure). The male screw portion 12 may be provided only on the front end of the shaft body 10.

第1平板20は、細幅板体とされると共に、中央に前記軸体10を挿通させる軸体挿通孔21を有している。第1平板20は、軸体10を軸体挿通孔21に挿通させた状態で、軸体に雌ねじ体22を螺着させることにより、軸体の先方端部13に装着される。雌ねじ体22は、例えば六角ナット、蝶ナット等であればよく形態は限定されない。第1平板20が細幅とされるため、縦矢板の側縁部112において、継ぎ手115の位置を避けて縦矢板110に接しさせることができる(図1(A)図参照)。 The first flat plate 20 is a narrow plate body and has a shaft body insertion hole 21 in the center through which the shaft body 10 is inserted. The first flat plate 20 is attached to the front end portion 13 of the shaft body by screwing the female screw body 22 to the shaft body in a state where the shaft body 10 is inserted into the shaft body insertion hole 21. The female screw body 22 may be, for example, a hexagon nut, a wing nut, or the like, and the form is not limited. Since the first flat plate 20 has a narrow width, the side edge portion 112 of the vertical sheet pile can be brought into contact with the vertical sheet pile 110 while avoiding the position of the joint 115 (see FIG. 1 (A)).

第2平板30は、押しラム41が細長枠体の後方端枠52と第2平板30との間に配された状態で、第2平板30が細長枠体50の中で前記軸体10に沿う方向にスライド可能に遊嵌されている(図2(A)図両方向矢印b参照)。第2平板30の垂直方向の長さは、一対の水平部材120の間隙122を跨いで夫々の外面124,124に係る長さとされ、細長枠体50に格納された状態で、細長枠体の上下の開放された側面56,56から突出されている(図2(C)図参照)。 In the second flat plate 30, the push ram 41 is arranged between the rear end frame 52 of the elongated frame body and the second flat plate 30, and the second flat plate 30 is attached to the shaft body 10 in the elongated frame body 50. It is loosely fitted so as to be slidable in the direction along the line (see the bidirectional arrow b in FIG. 2 (A)). The vertical length of the second flat plate 30 is set to be the length corresponding to the outer surfaces 124 and 124 of the pair of horizontal members 120 straddling the gap 122, respectively, and the elongated frame body is stored in the elongated frame body 50. It protrudes from the upper and lower open side surfaces 56 and 56 (see FIG. 2C).

第2平板30の上方部には、側枠53,53の上縁部に引っかかる落下防止片31,31が備えられ、第2平板30がシリンダー軸42から外された場合であっても、細長枠体50から抜け落ちないようにされている(図2(B)図参照)。これにより、高所で作業される山留壁の工事であっても、第2平板を誤って落下させることがなく事故を発生させない。第2平板30の後方側には、押しラムのシリンダー軸42の先端部が挿し込まれる筒部32が備えられる。 The upper portion of the second flat plate 30 is provided with fall prevention pieces 31 and 31 that are caught on the upper edges of the side frames 53 and 53, and is elongated even when the second flat plate 30 is removed from the cylinder shaft 42. It is prevented from falling out of the frame 50 (see FIG. 2B). As a result, even when the mountain retaining wall is constructed at a high place, the second flat plate is not accidentally dropped and an accident does not occur. On the rear side of the second flat plate 30, a cylinder portion 32 into which the tip end portion of the cylinder shaft 42 of the push ram is inserted is provided.

次に、縦矢板110と一対の水平部材120との隙間200をなくす矯正作業について、図2(C)図と図2(D)図を参照して詳細に説明する。まず、一対の水平部材120の外面側から、一対の水平部材の間隙122に軸体10と共に細長枠体50の先方部を挿し込み、縦矢板に穿設された孔116から軸体の先方端部13を縦矢板の内方空間117側に突出させる(図2(C)図,図3参照)。このときに、押しラムの後端部を細長枠体50の後方端枠52の内面に当接させた状態で、第2平板30を一対の水平部材の夫々の外面124,124に当接させると、押しラム41を伸長させる距離が短くなり、効率的に作業を行うことができる。 Next, the straightening work for eliminating the gap 200 between the vertical sheet pile 110 and the pair of horizontal members 120 will be described in detail with reference to FIGS. 2 (C) and 2 (D). First, from the outer surface side of the pair of horizontal members 120, the front end portion of the elongated frame body 50 is inserted into the gap 122 of the pair of horizontal members together with the shaft body 10, and the front end of the shaft body is inserted through the hole 116 formed in the vertical sheet pile. The portion 13 is projected toward the inner space 117 side of the vertical sheet pile (see FIGS. 2 (C) and 3). At this time, the second flat plate 30 is brought into contact with the outer surfaces 124 and 124 of the pair of horizontal members in a state where the rear end portion of the push ram is brought into contact with the inner surface of the rear end frame 52 of the elongated frame body 50. As a result, the distance for extending the push ram 41 is shortened, and the work can be performed efficiently.

次に、内方空間117側に突出された軸体10に第1平板20を装着させ、縦矢板外面118に当接させると共に、雌ねじ体22を螺着させて第1平板20を軸体10に固着させる。そして、油圧発生部300のレバーハンドル301を上下動させて押しラム41を油圧駆動させ(図2(A)図参照)、シリンダー軸42を伸長させ、第2平板30と細長枠体の後方端枠52との間で突っ張らせる(図2(C)図参照)。そうすると、縦矢板110に接して位置が固定されている第1平板20に対して、第2平板30が縦矢板110に向けて押し出され(図2(D)図矢印c参照)、二つの平板20,30の距離が接近される(図2(C)図距離d,図2(D)図距離e参照)。 Next, the first flat plate 20 is attached to the shaft body 10 protruding toward the inner space 117 side, and the first flat plate 20 is brought into contact with the outer surface 118 of the vertical sheet pile, and the female screw body 22 is screwed to attach the first flat plate 20 to the shaft body 10. To stick to. Then, the lever handle 301 of the hydraulic pressure generating unit 300 is moved up and down to hydraulically drive the push ram 41 (see FIG. 2A), the cylinder shaft 42 is extended, and the second flat plate 30 and the rear end of the elongated frame body are extended. It is stretched between the frame 52 and the frame 52 (see FIG. 2C). Then, the second flat plate 30 is extruded toward the vertical sheet pile 110 with respect to the first flat plate 20 whose position is fixed in contact with the vertical sheet pile 110 (see arrow c in FIG. 2D), and the two flat plates are formed. The distances of 20 and 30 are approached (see the distance d in FIG. 2C and the distance e in FIG. 2D).

このとき、縦矢板110の方が一対の水平部材120よりも剛性が高いため、縦矢板110の位置は殆ど動かず、一対の水平部材120が縦矢板110に接近されて密着される(図2(D)図参照)。縦矢板と一対の水平部材とが密着されたら、縦矢板と腹起しとを締結具140により固着させる(図2(C)図参照)。シリンダー軸42を伸長方向とは反対方向に縮退させると共に、第1平板20と雌ねじ体22とを軸体10から脱離させ、縦矢板110と一対の水平部材120とから腹起し矯正治具1を取り外す。一つの位置において腹起しの矯正が終わったら、腹起し矯正治具1を縦矢板110の異なる位置に移動させて腹起しを矯正させる(図1(A)図破線で示す腹起し矯正治具9参照)。 At this time, since the vertical sheet pile 110 has higher rigidity than the pair of horizontal members 120, the position of the vertical sheet pile 110 hardly moves, and the pair of horizontal members 120 are brought close to each other and brought into close contact with each other (FIG. 2). (D) See figure). When the vertical sheet pile and the pair of horizontal members are brought into close contact with each other, the vertical sheet pile and the abdomen are fixed by the fastener 140 (see FIG. 2C). The cylinder shaft 42 is retracted in the direction opposite to the extension direction, the first flat plate 20 and the female screw body 22 are separated from the shaft body 10, and the vertical sheet pile 110 and the pair of horizontal members 120 are raised from each other to correct the jig. Remove 1. After the correction of the abdomen is completed at one position, the abdomen correction jig 1 is moved to different positions of the vertical sheet pile 110 to correct the abdomen (the abdomen shown by the broken line in FIG. 1 (A)). Refer to the straightening jig 9).

次に、一連の二重締切鋼矢板壁による山留壁構築工法の工程を、図3を参照して説明する。ここでは豪雨により決壊した堤防の再建工事を例に説明する。図3(A)図は、縦矢板110を打設させた状態を示している。図3(B)図は、縦矢板に支持部材111を固着させて、一対の水平部材120を架け渡した状態を示している。図3(C)図は、腹起しを矯正させる状態を示している。図3(D)図は、向かい合う縦矢板110,110に引張部材130を張り渡した状態を示している。図3(E)図は、縦矢板の内方空間に盛土150をし、縦矢板の天端にコンクリート151を打設させると共に、堤外に法面152を構築させた状態を示している。 Next, the process of the mountain retaining wall construction method using a series of double-cut-off steel sheet pile walls will be described with reference to FIG. Here, the reconstruction work of the embankment that broke due to heavy rain will be described as an example. FIG. 3A shows a state in which the vertical sheet pile 110 is driven. FIG. 3B shows a state in which the support member 111 is fixed to the vertical sheet pile and the pair of horizontal members 120 are bridged. FIG. 3C shows a state in which the abdomen is corrected. FIG. 3 (D) shows a state in which the tension member 130 is stretched over the vertical sheet piles 110 and 110 facing each other. FIG. 3 (E) shows a state in which an embankment 150 is placed in the inner space of the vertical sheet pile, concrete 151 is placed at the top of the vertical sheet pile, and a slope 152 is constructed outside the bank.

まず、堤防の決壊した部分に、向かい合うハット形鋼矢板壁をなす縦矢板110,110を地盤深くまで打設させる。堤防の嵩上げを併せて行う場合には、縦矢板の高さを既設堤防160に適した設計高さとさせる(図3(A)図破線参照)。次に、高所作業車161を使って、各々の縦矢板110の頂部に支持部材111を固着させると共に、一対の水平部材120を縦矢板と交差する方向に平行に架け渡す(図3(B)図参照)。 First, vertical sheet piles 110 and 110 forming a hat-shaped steel sheet pile wall facing each other are driven deep into the ground at the broken part of the embankment. When raising the embankment at the same time, the height of the vertical sheet pile is set to the design height suitable for the existing embankment 160 (see the broken line in FIG. 3 (A)). Next, using the aerial work platform 161, the support member 111 is fixed to the top of each vertical sheet pile 110, and the pair of horizontal members 120 are bridged in parallel in the direction intersecting the vertical sheet pile (FIG. 3B). ) See the figure).

そして、腹起し矯正治具1を使って一対の水平部材120を矯正させ、縦矢板110に一対の水平部材120を隙間なく当接させると共に溶接・ボルト締結等により縦矢板と一対の腹起しとを固着させる(図3(C)図参照)。この状態で、向かい合う縦矢板110,110の間に、引張部材130が張り渡され、縦矢板110,110が一対の水平部材120,120ごと内側に向けて引っ張られる(図3(D)図参照)。これを山留壁の水平方向全長に亘って繰り返す。全ての縦矢板に引張部材が張り渡されると、縦矢板の内方空間117(図3(D)図参照)に複数回にわけて盛土150がされ、縦矢板の上方部分まで盛土がされる(図3(E)図参照)。更に、縦矢板の天端にコンクリート151が打設されると共に、縦矢板に沿って法面152が構築される。 Then, the pair of horizontal members 120 are straightened using the abdominal raising correction jig 1, the pair of horizontal members 120 are brought into contact with the vertical sheet pile 110 without a gap, and the vertical sheet pile and the pair of abdominal raising are performed by welding, bolting, or the like. The jig is fixed (see FIG. 3C). In this state, the tension member 130 is stretched between the vertical sheet piles 110 and 110 facing each other, and the vertical sheet piles 110 and 110 are pulled inward together with the pair of horizontal members 120 and 120 (see FIG. 3 (D)). ). This is repeated over the entire horizontal length of the mountain retaining wall. When the tension members are stretched over all the vertical sheet piles, the embankment 150 is divided into multiple times in the inner space 117 of the vertical sheet piles (see Fig. 3 (D)), and the embankment is filled up to the upper part of the vertical sheet piles. (See FIG. 3 (E)). Further, concrete 151 is cast on the top end of the vertical sheet pile, and a slope 152 is constructed along the vertical sheet pile.

実施例2においては、伸縮手段が、縦矢板と腹起しを接近させる際に縮退手段として作用される伸縮装置と伸縮装置を装着させる細長枠体とからなる腹起し矯正治具2を、図4と図5を参照して説明する。図4は、腹起し矯正治具と伸縮手段の説明図を示している。図4(A)図は、腹起し矯正治具の平面による説明図である。図4(B)図は、図4(A)図のA−A位置の断面による説明図である。図4(C)図は、保管・運搬時において、細長筒体の中に軸体を収容させて全体を短くさせた状態を示している。図5は、腹起し矯正治具の使用状態の説明図を示している。図5(A)図と図5(B)図は、腹起し矯正治具が縦矢板の内方空間側で使用される場合を示し、図5(C)図は、腹起し側で使用される場合を示している。 In the second embodiment, the abdominal upright correction jig 2 is composed of a telescopic device that acts as a degenerate means when the vertical sheet pile and the abdomen are brought close to each other, and an elongated frame body on which the telescopic device is attached. This will be described with reference to 4 and FIG. FIG. 4 shows an explanatory view of the abdominal upright correction jig and the expansion / contraction means. FIG. 4 (A) is an explanatory view of the abdominal upright correction jig in a plane. FIG. 4 (B) is an explanatory view taken along the cross section of the position AA in FIG. 4 (A). FIG. 4C shows a state in which the shaft body is housed in the elongated tubular body and the whole is shortened during storage and transportation. FIG. 5 shows an explanatory diagram of a usage state of the abdomen correction jig. 5 (A) and 5 (B) show the case where the abdominal correction jig is used on the inner space side of the vertical sheet pile, and FIG. 5 (C) shows the case where the abdominal correction jig is used on the abdominal side. Indicates when used.

実施例2においては伸縮手段40が、細長枠体60と、伸縮装置をなす引きラム43とされる例を説明する(図4(A)図参照)。引きラム43とは、シリンダー軸44の両端にフック45,45を有し、シリンダー軸を油圧駆動させて縮退させ、牽引対象を引っ張る油圧ジャッキである。引きラムの引張力は、50kN以上とすると腹起しを矯正させやすい。実施例2以下においては、実施例1と同様の構成については同一の符号を付して説明を省略している。 In the second embodiment, an example in which the telescopic means 40 is an elongated frame 60 and a pulling ram 43 forming the telescopic device will be described (see FIG. 4 (A)). The pull ram 43 is a hydraulic jack having hooks 45 and 45 at both ends of the cylinder shaft 44, and the cylinder shaft is hydraulically driven to degenerate and pull the towed object. When the tensile force of the pull ram is 50 kN or more, it is easy to correct the abdomen. In the second and subsequent embodiments, the same components as those in the first embodiment are designated by the same reference numerals and the description thereof is omitted.

細長枠体をなす先方端枠61が、第1平板又は第2平板とされ、軸体の後方端部が挿通される孔62があけられている。先方端枠61が、縦矢板外面118に当接される場合(図5(A)図,図5(B)図参照)には、先方端枠61が第1平板24をなし、第1平板24の中を軸体14がスライドされる。この場合は、一対の水平部材120の夫々の外面124に係る第2平板34が、軸体14の先方端部13に固着されている。 The front end frame 61 forming the elongated frame body is a first flat plate or a second flat plate, and a hole 62 through which the rear end portion of the shaft body is inserted is formed. When the front end frame 61 is in contact with the outer surface 118 of the vertical sheet pile (see FIGS. 5 (A) and 5 (B)), the front end frame 61 forms the first flat plate 24 and forms the first flat plate. The shaft body 14 is slid in the 24. In this case, the second flat plate 34 related to each outer surface 124 of the pair of horizontal members 120 is fixed to the front end portion 13 of the shaft body 14.

細長枠体の先方端枠61が、一対の水平部材120の夫々の外面124,124に係る場合(図5(C)図参照)には、先方端枠61が第2平板35をなし、軸体10が第2平板35の中をスライドされる。この場合は、縦矢板外面118に当接される第1平板25が、軸体10の先方端部13に固着されている。 When the front end frame 61 of the elongated frame body relates to the outer surfaces 124, 124 of the pair of horizontal members 120, respectively (see FIG. 5C), the front end frame 61 forms the second flat plate 35, and the shaft. The body 10 is slid in the second flat plate 35. In this case, the first flat plate 25 that comes into contact with the outer surface 118 of the vertical sheet pile is fixed to the front end portion 13 of the shaft body 10.

いずれの場合も、軸体10が細長枠体60に遊嵌されているため、引きラム43により軸体10を細長枠体60の後方に向けて引っ張れば、先方端枠61が軸体10に沿ってスライドされ、第1平板と第2平板とが接近される。先方端枠61の垂直方向の長さは、一対の水平部材の間隙122を跨ぐ長さとされている(図5(C)図参照)。細長枠体60をなす長手方向の後方端枠は、鋼板にかえて引きラム43のフック45を引っ掛けて固着させる軸部63とさせている。 In either case, since the shaft body 10 is loosely fitted to the elongated frame body 60, if the shaft body 10 is pulled toward the rear of the elongated frame body 60 by the pull ram 43, the front end frame 61 becomes the shaft body 10. It is slid along and the first flat plate and the second flat plate are brought close to each other. The vertical length of the front end frame 61 is set to be a length that straddles the gap 122 of the pair of horizontal members (see FIG. 5C). The rear end frame in the longitudinal direction forming the elongated frame body 60 is a shaft portion 63 for hooking and fixing the hook 45 of the pull ram 43 instead of the steel plate.

細長枠体60の中に進入された軸体14の後方端部11に、環状部を有する第2雌ねじ体70が螺着され、軸体14が細長枠体60から抜け落ちないようにされている。引きラム43は、前記環状部71と後方端枠をなす前記軸部63とに両端のフック45,45を引っ掛けて軸体14を引っ張って二つの平板の距離を接近させる。保管・運搬時には、引きラム43を細長枠体60から外し、細長枠体に遊嵌されている軸体14を格納部64に押し込めば、実施例1の腹起し矯正治具よりも短い状態で、保管・運搬させることができる(図4(C)図参照)。 A second female screw body 70 having an annular portion is screwed to the rear end portion 11 of the shaft body 14 that has entered the elongated frame body 60 so that the shaft body 14 does not fall out of the elongated frame body 60. .. The pull ram 43 hooks the hooks 45, 45 at both ends on the annular portion 71 and the shaft portion 63 forming the rear end frame, and pulls the shaft body 14 to bring the two flat plates closer to each other. At the time of storage / transportation, if the pull ram 43 is removed from the elongated frame body 60 and the shaft body 14 loosely fitted in the elongated frame body is pushed into the storage portion 64, the state is shorter than that of the abdominal raising correction jig of the first embodiment. It can be stored and transported (see Fig. 4 (C)).

腹起し矯正治具2を縦矢板110の側で使用する場合(図5(A)図参照)には、まず引きラム43のシリンダー軸44を延伸させてから、両端のフック45,45が、細長枠体の後方端部にある軸部63と、軸体14の端部に螺着された第2雌ねじ体70の環状部71に引っ掛けられる。次に、縦矢板110に穿設された孔116に軸体14を挿通させ、一対の水平部材の間隙122の先まで軸体の先方端部13を突き出させると共に、第1平板24をなす先方端枠61を縦矢板外面118に当接させる。間隙122から突き出された軸体の先方端部13に第2平板34が固着される。 When the abdominal correction jig 2 is used on the side of the vertical sheet pile 110 (see FIG. 5 (A)), the cylinder shaft 44 of the pull ram 43 is first extended, and then the hooks 45 and 45 at both ends are , The shaft portion 63 at the rear end portion of the elongated frame body and the annular portion 71 of the second female screw body 70 screwed to the end portion of the shaft body 14 are hooked. Next, the shaft body 14 is inserted into the hole 116 formed in the vertical sheet pile 110, the front end portion 13 of the shaft body is projected to the tip of the gap 122 of the pair of horizontal members, and the front end portion 13 forming the first flat plate 24 is formed. The end frame 61 is brought into contact with the outer surface 118 of the vertical sheet pile. The second flat plate 34 is fixed to the front end portion 13 of the shaft body protruding from the gap 122.

引きラム43のシリンダー軸44を縮退させると、細長枠体60に挿通された軸体14が第2平板34ごと縦矢板110に向けて引っ張られ(図5(A)図矢印参照)、一対の水平部材120の夫々の外面124,124を押圧させる。そうすると、第1平板24と第2平板34の距離が接近され(図5(A)図距離e,図5(B)図距離f参照)、縦矢板110と一対の水平部材120との隙間200が縮減されて、縦矢板に腹起しが隙間なく当接される(図5(A)図,図5(B)図参照)。 When the cylinder shaft 44 of the pull ram 43 is degenerated, the shaft body 14 inserted through the elongated frame body 60 is pulled toward the vertical sheet pile 110 together with the second flat plate 34 (see the arrow in FIG. 5 (A)), and a pair. The outer surfaces 124 and 124 of the horizontal member 120 are pressed, respectively. Then, the distance between the first flat plate 24 and the second flat plate 34 is approached (see the distance e in FIG. 5 (A) and the distance f in FIG. 5 (B)), and the gap 200 between the vertical sheet pile 110 and the pair of horizontal members 120 is 200. Is reduced and the abdomen is brought into contact with the vertical sheet pile without a gap (see FIGS. 5 (A) and 5 (B)).

腹起し矯正治具2が一対の水平部材120よりも外方側で使用される場合(図5(C)図参照)には、一対の水平部材の間隙122に軸体14を挿通させ、縦矢板外面118に軸体の先方端部13を突き出させると共に、第2平板35をなす細長枠体の先方端枠61を一対の水平部材の夫々の外面124,124に当接させる。縦矢板の孔116から突き出された軸体の先方端部13に第1平板25が固着される。引きラム43のシリンダー軸44を縮退させることにより、細長枠体60に挿通されている軸体14が縦矢板110に向かうように引っ張られ(図5(C)図矢印参照)、第1平板25と第2平板35の距離を接近させる。 When the abdominal correction jig 2 is used on the outer side of the pair of horizontal members 120 (see FIG. 5C), the shaft body 14 is inserted through the gap 122 of the pair of horizontal members. The front end 13 of the shaft body is projected onto the outer surface 118 of the vertical sheet pile, and the front end frame 61 of the elongated frame forming the second flat plate 35 is brought into contact with the outer surfaces 124 and 124 of the pair of horizontal members, respectively. The first flat plate 25 is fixed to the front end portion 13 of the shaft body protruding from the hole 116 of the vertical sheet pile. By degenerating the cylinder shaft 44 of the pull ram 43, the shaft body 14 inserted through the elongated frame body 60 is pulled toward the vertical sheet pile 110 (see the arrow in FIG. 5C), and the first flat plate 25 And the second flat plate 35 are brought closer to each other.

実施例3においては、伸縮手段40が、縦矢板と腹起しを接近させる際に伸長手段として作用される伸縮装置と伸縮装置を装着させる広幅の枠体とからなる腹起し矯正治具3を、図6を参照して説明する。図6(A)図は、腹起し矯正治具の平面による説明図を示し、図6(B)図と図6(C)図は、縦矢板に腹起しを接近させる矯正作業の工程を示している。 In the third embodiment, the expansion / contraction means 40 comprises an expansion / contraction device that acts as an extension means when the vertical sheet pile and the abdomen are brought close to each other, and a wide frame for mounting the expansion / contraction device. , FIG. 6 will be described. FIG. 6 (A) shows an explanatory view of the abdominal upset correction jig in a plane, and FIGS. 6 (B) and 6 (C) show a process of correction work in which the abdominal upset is brought close to the vertical sheet pile. Is shown.

実施例3においては伸縮手段40が、広幅の枠体80と伸長手段をなす機械式ジャッキとされる例を説明する(図6参照)。ここでは、機械式ジャッキとしてパンタグラフ形式のジャッキ90を例に説明する。パンタグラフ形式のジャッキとは、ひし形をなすように左右対称に配設された一対の屈折腕91,92を、ねじ軸93の回動により延伸させる機械式ジャッキである(図6(A)図参照)。 In the third embodiment, an example in which the telescopic means 40 is a mechanical jack forming the wide frame 80 and the stretching means will be described (see FIG. 6). Here, a pantograph-type jack 90 will be described as an example of a mechanical jack. The pantograph-type jack is a mechanical jack in which a pair of refracting arms 91 and 92 arranged symmetrically so as to form a rhombus are extended by rotation of a screw shaft 93 (see FIG. 6 (A)). ).

より具体的には、一方の屈折腕91の関節部94にねじ孔を備えさせ、他方の屈折腕92の関節部95に逆ねじ孔を備えさせ、ねじ孔と逆ねじ孔とを貫通させるようにねじ軸93を挿通させている。このねじ軸をモータ96により回動させることにより、各々の関節部94,95を接近させて屈折腕91,92を延伸させている(図6(A)図参照)。 More specifically, the joint portion 94 of one of the refracting arms 91 is provided with a screw hole, and the joint portion 95 of the other refracting arm 92 is provided with a reverse screw hole so as to penetrate the screw hole and the reverse screw hole. The screw shaft 93 is inserted through the screw shaft 93. By rotating this screw shaft with a motor 96, the joint portions 94 and 95 are brought close to each other and the refracting arms 91 and 92 are extended (see FIG. 6 (A)).

パンタグラフ形式のジャッキの基端部97が、枠体80の後方端枠81の内面に固着され、パンタグラフ形式のジャッキ90と枠体80とが一体をなしている(図6(A)図参照)。パンタグラフ形式のジャッキの先端押圧部98が第2平板36をなし、枠体80の中で軸体10に沿ってスライド可能に遊嵌されている。枠体80は、パンタグラフ形式のジャッキ90を格納できるように広幅とされている。枠体80をなす鋼板の高さ、板厚は実施例1で説明した細長枠体と同様としている。軸体10は、先方端枠82の外面に固着されている。 The base end portion 97 of the pantograph-type jack is fixed to the inner surface of the rear end frame 81 of the frame body 80, and the pantograph-type jack 90 and the frame body 80 are integrated (see FIG. 6 (A)). .. The tip pressing portion 98 of the pantograph type jack forms the second flat plate 36, and is slidably loosely fitted along the shaft body 10 in the frame body 80. The frame body 80 is wide enough to store a pantograph-type jack 90. The height and thickness of the steel plate forming the frame 80 are the same as those of the elongated frame described in the first embodiment. The shaft body 10 is fixed to the outer surface of the front end frame 82.

腹起し矯正治具3を使用する場合も、実施例1と同様に、軸体10と、枠体80の先方部を一対の水平部材120の間隙122に挿し込み、軸体の先方端部を縦矢板の内方空間に突出させると共に、第2平板36をなすパンタグラフ形式のジャッキの先端押圧部98を一対の水平部材の夫々の外面124,124に当接させる(図6(B)図参照)。軸体の先方端部13に第1平板20と雌ねじ体22とを固着させる。この状態で屈折腕91,92を折り立てるようにして、第1平板20と第2平板36とを接近させて、縦矢板110と一対の水平部材120との隙間200をなくして一対の水平部材120を縦矢板110に当接させる(図6(B)図,図6(C)図参照)。 Also in the case of using the abdominal correction jig 3, the front end portion of the shaft body 10 and the frame body 80 is inserted into the gap 122 of the pair of horizontal members 120, and the front end portion of the shaft body is used as in the first embodiment. Is projected into the inner space of the vertical sheet pile, and the tip pressing portion 98 of the pantograph-type jack forming the second flat plate 36 is brought into contact with the outer surfaces 124 and 124 of the pair of horizontal members, respectively (FIG. 6 (B)). reference). The first flat plate 20 and the female screw body 22 are fixed to the front end portion 13 of the shaft body. In this state, the refracting arms 91 and 92 are folded so that the first flat plate 20 and the second flat plate 36 are brought close to each other to eliminate the gap 200 between the vertical sheet pile 110 and the pair of horizontal members 120, and the pair of horizontal members. The 120 is brought into contact with the vertical sheet pile 110 (see FIGS. 6 (B) and 6 (C)).

(その他)
・各実施例においては、油圧ジャッキ等の液体作動式ジャッキと、パンタグラフ形式のジャッキを電動駆動させる機械式ジャッキについて例示したが、本発明の伸縮手段はこれに限定されない。例えば、空気作動式ジャッキにより第1平板と第2平板との距離を接近させてもよく、人力で伸縮手段を伸縮させるようにしてもよい。
・実施例1においては、伸長手段が細長枠体に着脱可能に格納させる例を説明したが、伸長手段が細長枠体に予め格納されて一体とされてもよい。
・今回開示された実施の形態はすべての点で例示であって、制限的なものではないと考えられるべきである。本発明の技術的範囲は、上記した説明に限られず特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。
(Other)
-In each embodiment, a liquid-operated jack such as a hydraulic jack and a mechanical jack for electrically driving a pantograph-type jack have been exemplified, but the telescopic means of the present invention is not limited thereto. For example, the distance between the first flat plate and the second flat plate may be brought close by an air-operated jack, or the telescopic means may be expanded and contracted manually.
-In the first embodiment, an example in which the extending means is detachably stored in the elongated frame has been described, but the extending means may be stored in the elongated frame in advance and integrated.
-The embodiments disclosed this time should be considered to be exemplary in all respects and not restrictive. The technical scope of the present invention is indicated by the scope of claims, not limited to the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1,2,3…腹起し矯正治具、9…異なる位置に移動させた腹起し矯正治具、
10…軸体、20…第1平板、30…第2平板、40…伸縮手段、50…細長枠体、
100…山留壁、110…縦矢板、120…水平部材、
11…後方端部、12…雄ねじ部、13…先方端部、14…軸体、
21…軸体挿通孔、22…雌ねじ体、24,25…第1平板
31…落下防止片、32…筒部、34,35,36…第2平板、
41…押しラム、42…シリンダー軸、
43…引きラム、44…シリンダー軸、45…フック、
51…先方端枠、52…後方端枠、53…側枠、54…格納部、55…支持部、
56…開放された側面、
60…細長枠体、61…先方端枠、62…孔、63…軸部、64…格納部、
70…第2雌ねじ体、71…環状部、
80…枠体、81…後方端枠、82…先方端枠、
90…パンタグラフ形式のジャッキ、91,92…屈折腕、93…ねじ軸、
94,95…関節部、96…モータ、
111…支持部材、112…側縁部、113…中央平坦部、114…傾斜部、
115…継ぎ手、116…孔、117…内方空間、118…縦矢板外面、
121…溝形鋼、122…間隙、123…連結板、124…一対の水平部材の夫々の外面、
130…引張部材、140…締結具、
150…盛土、151…コンクリート、152…法面、
160…既設堤防、161…高所作業車、
200,201…隙間、
300…油圧発生部、301…レバーハンドル
1, 2, 3 ... Abdominal upset correction jig, 9 ... Abdominal upset correction jig moved to different positions,
10 ... Shaft body, 20 ... First flat plate, 30 ... Second flat plate, 40 ... Telescopic means, 50 ... Elongated frame body,
100 ... Yamatome wall, 110 ... Vertical sheet pile, 120 ... Horizontal member,
11 ... Rear end, 12 ... Male thread, 13 ... Front end, 14 ... Shaft,
21 ... Shaft body insertion hole, 22 ... Female threaded body, 24, 25 ... First flat plate 31 ... Fall prevention piece, 32 ... Cylinder, 34, 35, 36 ... Second flat plate,
41 ... Push ram, 42 ... Cylinder shaft,
43 ... pull ram, 44 ... cylinder shaft, 45 ... hook,
51 ... front end frame, 52 ... rear end frame, 53 ... side frame, 54 ... storage part, 55 ... support part,
56 ... Open side,
60 ... Elongated frame, 61 ... Front end frame, 62 ... Hole, 63 ... Shaft, 64 ... Storage,
70 ... 2nd female screw body, 71 ... Ring part,
80 ... frame body, 81 ... rear end frame, 82 ... front end frame,
90 ... Pantograph type jack, 91, 92 ... Refractive arm, 93 ... Screw shaft,
94, 95 ... joints, 96 ... motors,
111 ... Support member, 112 ... Side edge portion, 113 ... Central flat portion, 114 ... Inclined portion,
115 ... Joint, 116 ... Hole, 117 ... Inner space, 118 ... Vertical sheet pile outer surface,
121 ... channel steel, 122 ... gap, 123 ... connecting plate, 124 ... outer surface of each pair of horizontal members,
130 ... tension member, 140 ... fastener,
150 ... embankment, 151 ... concrete, 152 ... slope,
160 ... existing embankment, 161 ... aerial work platform,
200, 201 ... Gap,
300 ... Hydraulic generator, 301 ... Lever handle

Claims (7)

側縁部が咬み合わされると共に地中から突出されて二重締切鋼矢板壁をなすハット形鋼矢板の頂部に装着される腹起し矯正治具であって、
前記ハット形鋼矢板が前記腹起しに面しない側を第1の面とし、前記腹起しに面する側を第2の面とし、軸体と、第1平板と、第2平板と、伸縮手段とを含み、
前記軸体が、前記ハット形鋼矢板に穿孔された孔に貫通されると共に、前記ハット形鋼矢板の第2の面に沿って平行に配設された一対の水平部材からなる腹起しの間隙に挿通され、
第1平板が、前記軸体の一方の端部に装着されて第1の面に当接され、
第2平板が、前記軸体の他方の端部に装着されて前記一対の水平部材の夫々に係り、
前記伸縮手段が、伸縮装置と、前記伸縮装置を装着させる細長枠体とからなり、
前記細長枠体が、長手方向の一方の端枠の外方に前記軸体を固着させ、
第1平板が前記軸体に固着され、第2平板が前記細長枠体の中で、前記軸体の軸方向に沿ってスライド可能に保持され、
第2平板の縁部が、前記細長枠体の上下方向に突出されて前記一対の水平部材の夫々に係り、
前記伸縮装置が、前記細長枠体の長手方向の他方の端枠と第2平板との間に装着され、前記軸体を固着させた細長枠体の先方が、前記間隙に挿し込まれた状態で、伸長手段として作用され、第2平板が腹起しを押圧して、前記腹起しを第1平板に接近させ、前記ハット形鋼矢板の第2の面に前記腹起しを接しさせ、
前記ハット形鋼矢板と前記腹起しが固着されてから、前記伸縮装置が縮退手段として作用され、第1平板が前記軸体から脱離され、前記伸縮手段が前記頂部に着脱可能とされている、
ことを特徴とする腹起し矯正治具。
An abdominal correction jig that is attached to the top of a hat-shaped steel sheet pile that forms a double-cut-off steel sheet pile wall with its side edges occluded and protruded from the ground.
The side of the hat-shaped steel sheet pile that does not face the abdomen is the first surface, and the side that faces the abdomen is the second surface. Including telescopic means
The shaft body is penetrated through a hole drilled in the hat-shaped steel sheet pile, and is raised by a pair of horizontal members arranged in parallel along the second surface of the hat-shaped steel sheet pile. Inserted into the gap,
The first flat plate is attached to one end of the shaft body and is brought into contact with the first surface.
A second flat plate is attached to the other end of the shaft and engages with each of the pair of horizontal members.
The telescopic means comprises a telescopic device and an elongated frame on which the telescopic device is mounted.
The elongated frame body fixes the shaft body to the outside of one end frame in the longitudinal direction.
The first flat plate is fixed to the shaft body, and the second flat plate is slidably held in the elongated frame body along the axial direction of the shaft body.
The edge of the second flat plate is projected in the vertical direction of the elongated frame body and is engaged with each of the pair of horizontal members.
A state in which the telescopic device is mounted between the other end frame in the longitudinal direction of the elongated frame body and the second flat plate, and the tip of the elongated frame body to which the shaft body is fixed is inserted into the gap. Then, acting as an extension means, the second flat plate presses the abdomen to bring the abdomen closer to the first flat plate, and the abdomen is brought into contact with the second surface of the hat-shaped steel sheet pile. ,
After the hat-shaped steel sheet pile and the abdomen are fixed, the expansion / contraction device acts as a degenerate means, the first flat plate is detached from the shaft body, and the expansion / contraction means is attached to and detachable from the top. Yes,
An abdominal orthodontic jig characterized by this.
前記伸縮装置が、シリンダー形式の伸縮装置とされ、
前記細長枠体が、前記伸縮装置を格納させる格納部を有し、
前記格納部のうち少なくとも一つの側面が開放され、前記伸縮装置が着脱可能とされている、
ことを特徴とする請求項1に記載の腹起し矯正治具。
The telescopic device is a cylinder type telescopic device.
The elongated frame body has a storage portion for storing the telescopic device, and has a storage portion.
At least one side surface of the storage portion is opened so that the telescopic device can be attached and detached.
The abdomen correction jig according to claim 1, wherein the abdomen is corrected.
前記伸縮装置が、シリンダー形式の伸縮装置とされ、
前記細長枠体に予め格納され一体とされている、
ことを特徴とする請求項1に記載の腹起し矯正治具。
The telescopic device is a cylinder type telescopic device.
Pre-stored and integrated in the elongated frame.
The abdomen correction jig according to claim 1, wherein the abdomen is corrected.
側縁部が咬み合わされると共に地中から突出されて二重締切鋼矢板壁をなすハット形鋼矢板の頂部に装着される腹起し矯正治具であって、
前記ハット形鋼矢板が前記腹起しに面しない側を第1の面とし、前記腹起しに面する側を第2の面とし、軸体と、第1平板と、第2平板と、伸縮手段とを含み、
前記軸体が、前記ハット形鋼矢板に穿孔された孔に貫通されると共に、前記ハット形鋼矢板の第2の面に沿って平行に配設された一対の水平部材からなる腹起しの間隙に挿通され、
第1平板が、前記軸体の一方の端部に装着されて、第1の面に当接され、
第2平板が、前記軸体の他方の端部に装着されて、前記一対の水平部材の夫々に係り、
前記伸縮手段が、伸縮装置と、前記伸縮装置を装着させる細長枠体とからなり、
第2平板の縁部が、前記細長枠体の上下方向に突出されて前記一対の水平部材の夫々に係り、
第1平板又は第2平板の一方が前記軸体に固着され、第1平板又は第2平板の他方が、前記軸体の軸方向に沿ってスライド可能に遊嵌され、
前記細長枠体が、一方の端枠を第1平板又は第2平板とし、前記一方の端枠に前記軸体を挿通させる孔を有し、
前記伸縮装置が、前記細長枠体の他方の端枠と、前記一方の端枠の孔から挿通された前記軸体の端部とに固着されると共に、縮退手段として作用され、前記軸体に張力を作用させ、固着された第1平板又は第2平板と、スライド可能に遊嵌された第1平板又は第2平板との距離を接近させ、前記ハット形鋼矢板の第2の面に前記腹起しを接しさせ、
前記ハット形鋼矢板と前記腹起しが固着されてから、前記伸縮装置が伸長手段として作用され、スライド可能に遊嵌された第1平板又は第2平板が脱離され、前記伸縮手段が前記頂部に着脱可能とされている、
ことを特徴とする腹起し矯正治具。
An abdominal correction jig that is attached to the top of a hat-shaped steel sheet pile that forms a double-cut-off steel sheet pile wall with its side edges occluded and protruded from the ground.
The side of the hat-shaped steel sheet pile that does not face the abdomen is the first surface, and the side that faces the abdomen is the second surface. Including telescopic means
The shaft body is penetrated through a hole drilled in the hat-shaped steel sheet pile, and is raised by a pair of horizontal members arranged in parallel along the second surface of the hat-shaped steel sheet pile. Inserted into the gap,
The first flat plate is attached to one end of the shaft body and is brought into contact with the first surface.
A second flat plate is attached to the other end of the shaft and engages with each of the pair of horizontal members.
The telescopic means comprises a telescopic device and an elongated frame on which the telescopic device is mounted.
The edge of the second flat plate is projected in the vertical direction of the elongated frame body and is engaged with each of the pair of horizontal members.
One of the first flat plate or the second flat plate is fixed to the shaft body, and the other of the first flat plate or the second flat plate is slidably loosely fitted along the axial direction of the shaft body.
The elongated frame has one end frame as a first flat plate or a second flat plate, and the one end frame has a hole through which the shaft body is inserted.
The telescopic device is fixed to the other end frame of the elongated frame body and the end portion of the shaft body inserted through the hole of the one end frame body, and acts as a degenerate means to the shaft body. Tension is applied to bring the fixed first plate or second plate closer to the slidably loosely fitted first plate or second plate, and the second surface of the hat-shaped steel sheet pile is subjected to the above. Get angry and touch
After the hat-shaped steel sheet pile and the abdomen are fixed, the expansion / contraction device acts as an extension means, the first plate or the second plate that is slidably loosely fitted is detached, and the expansion / contraction means becomes the extension means. Detachable on the top,
An abdominal orthodontic jig characterized by this.
更に、雌ねじ体を含み、前記軸体の一方の端部に、雄ねじ部が備えられ、
前記雌ねじ体が、第1平板に穿孔された孔に挿通された前記雄ねじ部に螺着され、前記一方の端部に第1平板が付着され、前記軸体の他方の端部に前記伸縮手段が装着される、
ことを特徴とする請求項1乃至請求項3のいずれか一項に記載の腹起し矯正治具。
Further, a female threaded body is included, and a male threaded portion is provided at one end of the shaft body.
The female screw body is screwed into the male screw portion inserted into the hole drilled in the first flat plate, the first flat plate is attached to the one end portion, and the expansion / contraction means is attached to the other end portion of the shaft body. Is installed,
The abdomen correction jig according to any one of claims 1 to 3, wherein the abdomen correction jig is characterized.
側縁部が咬み合わされたハット形鋼矢板と、前記ハット形鋼矢板に沿って平行に配設された一対の水平部材からなる腹起しとにより二重締切鋼矢板壁を構築させる山留壁構築工法であって、
地中から突出されたハット形鋼矢板の頂部に装着された、請求項1乃至請求項3のいずれか一項に記載の腹起し矯正治具の伸縮装置が伸長手段として作用され、第2平板が前記ハット形鋼矢板の第2の面に前記腹起しを接しさせる工程を第1の工程とし、
前記ハット形鋼矢板と前記腹起しを固着させる工程を第2の工程とし、
前記伸縮装置が縮退手段として作用され、スライド可能に遊嵌されていた第2平板が脱離されて、前記頂部から前記腹起し矯正治具が取り外される工程を第3の工程とし、
前記ハット形鋼矢板の頂部の異なる位置においても、第1の工程から第3の工程が繰り返されて、
前記ハット形鋼矢板の水平方向全長に亘って前記腹起しを接しさせる、
ことを特徴とする山留壁構築工法。
A mountain retaining wall for constructing a double deadline steel sheet pile wall by a hat-shaped steel sheet pile whose side edges are occluded and an abdomen composed of a pair of horizontal members arranged in parallel along the hat-shaped steel sheet pile. It ’s a construction method,
The expansion / contraction device for the abdominal correction jig according to any one of claims 1 to 3, which is attached to the top of a hat-shaped steel sheet pile protruding from the ground, acts as an extension means, and a second The step in which the flat plate is brought into contact with the second surface of the hat-shaped steel sheet pile is defined as the first step.
The step of fixing the hat-shaped steel sheet pile and the abdomen up is the second step.
The third step is a step in which the telescopic device acts as a degenerate means, the second flat plate slidably loosely fitted is detached, and the abdominal erection correction jig is removed from the top.
The first step to the third step are repeated even at different positions on the top of the hat-shaped steel sheet pile.
The abdomen is brought into contact with the hat-shaped steel sheet pile over the entire horizontal length.
A mountain retaining wall construction method characterized by this.
側縁部が咬み合わされたハット形鋼矢板と、前記ハット形鋼矢板に沿って平行に配設された一対の水平部材からなる腹起しとにより二重締切鋼矢板壁を構築させる山留壁構築工法であって、
地中から突出されたハット形鋼矢板の頂部に装着された、請求項4に記載の腹起し矯正治具の伸縮装置が縮退手段として作用され、第2平板が前記ハット形鋼矢板の第2の面に前記腹起しを接しさせる工程を第1の工程とし、
前記ハット形鋼矢板と前記腹起しを固着させる工程を第2の工程とし、
前記伸縮装置が伸長手段として作用され、スライド可能に遊嵌されていた第1平板又は第2平板が脱離されて、前記頂部から前記腹起し矯正治具が取り外される工程を第3の工程とし、
前記ハット形鋼矢板の頂部の異なる位置においても、第1の工程から第3の工程が繰り返されて、
前記ハット形鋼矢板の水平方向全長に亘って前記腹起しを接しさせる、
ことを特徴とする山留壁構築工法。
A mountain retaining wall for constructing a double deadline steel sheet pile wall by a hat-shaped steel sheet pile whose side edges are occluded and an abdomen composed of a pair of horizontal members arranged in parallel along the hat-shaped steel sheet pile. It ’s a construction method,
The expansion / contraction device for the abdominal upright correction jig according to claim 4, which is attached to the top of the hat-shaped steel sheet pile protruding from the ground, acts as a degenerate means, and the second flat plate is the first of the hat-shaped steel sheet piles. The step of bringing the abdomen into contact with the surface 2 is defined as the first step.
The step of fixing the hat-shaped steel sheet pile and the abdomen up is the second step.
The third step is a step in which the telescopic device acts as an extension means, the first flat plate or the second flat plate slidably loosely fitted is detached, and the abdominal raising correction jig is removed from the top. age,
The first step to the third step are repeated even at different positions on the top of the hat-shaped steel sheet pile.
The abdomen is brought into contact with the hat-shaped steel sheet pile over the entire horizontal length.
A mountain retaining wall construction method characterized by this.
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CN115182359A (en) * 2022-07-21 2022-10-14 中国建筑第二工程局有限公司 Underground comprehensive pipe gallery foundation pit supporting structure and construction method

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CN115182359B (en) * 2022-07-21 2023-08-15 中国建筑第二工程局有限公司 Underground comprehensive pipe gallery foundation pit supporting structure and construction method

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