JP6083603B2 - Repairing method of steel sheet pile using connecting jig, connecting wall connected by this connecting jig, and connecting jig - Google Patents

Repairing method of steel sheet pile using connecting jig, connecting wall connected by this connecting jig, and connecting jig Download PDF

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JP6083603B2
JP6083603B2 JP2013089268A JP2013089268A JP6083603B2 JP 6083603 B2 JP6083603 B2 JP 6083603B2 JP 2013089268 A JP2013089268 A JP 2013089268A JP 2013089268 A JP2013089268 A JP 2013089268A JP 6083603 B2 JP6083603 B2 JP 6083603B2
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文博 長崎
文博 長崎
弘輝 佐藤
弘輝 佐藤
光良 坂本
光良 坂本
小林 秀一
秀一 小林
卓郎 石井
卓郎 石井
和幸 神谷
和幸 神谷
眞一 神吉
眞一 神吉
小林 俊寛
俊寛 小林
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藤村ヒューム管株式会社
株式会社水倉組
住理工商事株式会社
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Description

本発明は、残存型枠を用いて鋼矢板を補修するための連結治具及びこの連結治具で連結された連結壁並びに連結治具を用いた鋼矢板の補修工法に関する。   The present invention relates to a connecting jig for repairing a steel sheet pile using a remaining formwork, a connecting wall connected by the connecting jig, and a steel sheet pile repairing method using the connecting jig.

農業用水利施設や都市河川は、戦後の高度成長期にその多くが集中的に整備された。中でも鋼矢板護岸は、その経済性と施工性の良さから、多くの農業用水路や都市河川の整備に使用されてきたが、現在、これらの鋼矢板護岸による水路の多くが老朽化による更新時期を迎えようとしている。   Many agricultural irrigation facilities and urban rivers were concentrated in the post-war high growth period. Among them, steel sheet pile revetments have been used for the maintenance of many agricultural canals and urban rivers because of their economic efficiency and ease of construction, but at present, many of these canals are renewed due to aging. I'm about to meet you.

鋼矢板の老朽化の原因としては、例えば錆による腐蝕が挙げられるが、特に水面上に露出されたり水面下に沈降したりすることが繰り返されることによる水面近傍の腐蝕が激しく、また、近年の農業地域の都市化が進んだことによる水質悪化、すなわち用水路や排水路に家庭からの生活雑排水などが流れ込んだことによる鋼矢板の腐蝕の進行が問題となっている。   The cause of aging of steel sheet piles is, for example, corrosion due to rust, but corrosion in the vicinity of the water surface due to repeated exposure to the water surface or sedimentation under the water surface is particularly severe. The deterioration of water quality due to the urbanization of agricultural areas, that is, the progress of corrosion of steel sheet piles due to the inflow of domestic wastewater from households into irrigation channels and drainage channels, is a problem.

このような腐蝕を放置すると、鋼矢板の強度が低下して護岸としての機能を果たさなくなることから設備の大幅な改修や新たな構築が必要となるが、施設を新しく造り代えることは多くの有効な部分が残存する施設にとって非効率的であり、しかも費用の負担も非常に大きなものとなるため、財政状況の厳しい現状においては現実的ではない。   If such corrosion is left unattended, the strength of the steel sheet pile will be reduced and it will no longer function as a revetment, so it will be necessary to renovate and construct new facilities. This is inefficient for a facility with some remaining parts, and the cost burden is very large, so it is not realistic in the current financial situation.

そこで、補修を施すことが適切な対応となるが、従来の鋼矢板護岸の補修方法としては、例えば以下の特許文献などが認められる。   Therefore, it is appropriate to perform repairs. As a conventional repair method for steel sheet pile revetments, for example, the following patent documents are recognized.

特許文献1に記載の補修方法は、錆が発生した鋼矢板の表面に、研磨剤と水溶性防錆剤とを液体に混合して成る補修用剤をブラスト装置により吹き付けする補修工程を行って、研磨剤の研磨作用により腐食した鋼矢板表面の錆を除去すると共に、鋼矢板表面に防錆剤を付着せしめ、続いてこの鋼矢板の表面に、液体を加えると硬化する性状の硬化剤と水溶性防錆剤とを液体に混合して成る補強用剤をブラスト装置により吹き付けする補強工程を行って、前記硬化剤の硬化作用によりこの鋼矢板の表面に防錆作用を有する補強層を形成する、と云うものである。   The repair method described in Patent Document 1 performs a repair process in which a blasting device sprays a repair agent formed by mixing a polishing agent and a water-soluble rust preventive agent on the surface of a steel sheet pile in which rust has occurred. In addition to removing rust on the surface of the steel sheet pile corroded by the abrasive action of the abrasive, a rust preventive agent is adhered to the surface of the steel sheet pile, and then a property curing agent that hardens when a liquid is added to the surface of the steel sheet pile. A reinforcing process is performed by spraying a reinforcing agent made by mixing a water-soluble rust inhibitor into a liquid with a blasting device, and a reinforcing layer having a rust preventing action is formed on the surface of the steel sheet pile by the hardening action of the hardener. It is said to be.

また特許文献2に第2実施例として記載された補修方法は、必要に応じて鋼矢板の表面に付着している貝殻、藻等の付着物を除去し、サンドブラストによって研磨して鋼矢板の表面を露出させた後、スタッドボルト17を鉄板(鋼矢板)16の上に溶接し、鉄板16の表面から一定の隙間を設けた枠体18(鉄板、FRP板)を取り付ける。そして、鉄板16と枠体18との間に合成樹脂(水中硬化型エポキシ樹脂)を充填する。また枠体18が鉄板の場合には、枠体18のさらに外側にスタッドボルト20を介してFRP製の外枠21を取り付け、枠体18と外枠21との間に合成樹脂を充填すると云うものである。   In addition, the repair method described in Patent Document 2 as the second embodiment is to remove the deposits such as shells and algae attached to the surface of the steel sheet pile as necessary, and polish the surface of the steel sheet pile by sandblasting. Then, the stud bolt 17 is welded onto the iron plate (steel sheet pile) 16, and a frame 18 (iron plate, FRP plate) provided with a certain gap from the surface of the iron plate 16 is attached. Then, a synthetic resin (an underwater curable epoxy resin) is filled between the iron plate 16 and the frame body 18. When the frame 18 is an iron plate, an FRP outer frame 21 is attached to the outer side of the frame 18 via a stud bolt 20, and a synthetic resin is filled between the frame 18 and the outer frame 21. Is.

特開2012−2010号公報JP 2012-2010 A 特開平5−98659号公報Japanese Patent Laid-Open No. 5-98659

しかし、特許文献1に記載の補修方法では、鋼矢板表面に防錆剤や補強用剤(硬化剤と水溶性防錆剤との混合)を吹き付ける際に、施工の品質が雨などの天候の影響を受け易く、補強用剤が硬化することにより形成される補強層に剥離が生じるという問題がある。   However, in the repair method described in Patent Document 1, when spraying a rust inhibitor or a reinforcing agent (mixture of a curing agent and a water-soluble rust inhibitor) onto the surface of a steel sheet pile, the quality of construction is such as rainy weather. There is a problem that peeling is caused in the reinforcing layer that is easily influenced and the reinforcing agent is hardened.

また特許文献1に記載の補修方法では、樹脂系の硬化剤を用いることが記載されているが、合成樹脂は紫外線の影響を受けて劣化しやすいため、コンクリート材料に比べ耐候性に劣るという問題がある。   Further, in the repair method described in Patent Document 1, it is described that a resin-based curing agent is used. However, since synthetic resins are easily deteriorated by the influence of ultraviolet rays, they are inferior in weather resistance compared to concrete materials. There is.

また特許文献2では、枠体の最初の一枚を固定するときには問題はない。しかしながら、二枚目以降の枠体を先に固定した枠体の隣に設置し鋼矢板に固定する際には、鋼矢板と先の枠体との間の狭い隙間に手を差し入れて作業をする必要があり、特に枠体の下端側を固定する作業は困難を伴うため、非常に作業効率が悪いという問題がある。   Further, in Patent Document 2, there is no problem when the first frame is fixed. However, when installing the second and subsequent frames next to the previously fixed frame and fixing them to the steel sheet pile, insert your hand into the narrow gap between the steel sheet pile and the previous frame. In particular, the work of fixing the lower end side of the frame is difficult, and there is a problem that the work efficiency is very poor.

さらに特許文献2では、スタッドボルト20の先端が外枠21の外側に露出した状態で水中あるいは空気中に直接的に晒される構成であるため腐食しやすいという問題もある。   Further, in Patent Document 2, there is a problem that the stud bolt 20 is easily corroded because it is directly exposed to water or air with the tip of the stud bolt 20 exposed to the outside of the outer frame 21.

本発明は、上記した従来技術における問題点を解消すべく発明されたものであり、既設の鋼矢板に適切な補修を施すことにより確実に腐食を防止し、施設の長寿命化を図って既存施設を有効活用することにより、ライフサイクルコストの低減に寄与すべく、補修用の残存型枠同士の連結を容易に行う連結治具及びこの連結治具で連結された連結壁並びに連結治具を用いた鋼矢板の補修工法を創出することを課題とする。   The present invention was invented to solve the above-described problems in the prior art, and by appropriately repairing existing steel sheet piles, corrosion was surely prevented, and the facility was made to have a long service life. In order to contribute to the reduction of life cycle cost by effectively utilizing the facility, a connecting jig for easily connecting the remaining molds for repair, a connecting wall and a connecting jig connected by the connecting jig are provided. The task is to create a repair method for the steel sheet pile used.

上記課題を解決するための手段のうち、第1発明の主たる構成は、
鋼矢板に対向配置された残存型枠同士を連結する連結治具であって、
隣接する残存型枠間に跨設されて残存型枠同士を連結する連結プレートと、基端に連結プレートに螺合する螺条を刻設すると共に、先端に鋼矢板に接続される接続部を設けた接続部材と、を有して構成されることを特徴とする、と云うものである。
Of the means for solving the above problems, the main configuration of the first invention is:
It is a connecting jig that connects the remaining molds facing each other to the steel sheet pile,
A connecting plate that is straddled between adjacent remaining molds and connects the remaining molds, and a thread that is screwed to the connection plate at the base end is engraved, and a connecting portion that is connected to the steel sheet pile at the distal end. And a connecting member provided.

上記第1発明の主たる構成では、隣接配置される残存型枠同士の連結作業を容易とする連結治具の提供を達成し得る。   In the main configuration of the first aspect of the invention, it is possible to achieve the provision of a connecting jig that facilitates the connecting operation of the remaining molds that are arranged adjacent to each other.

また第1発明の他の構成は、請求項1に記載の発明において、連結プレートを、隣接する一方の残存型枠の角部近傍に螺着されたボルトが挿通される取付け孔と、隣接する他方の残存型枠の角部近傍に螺着されたボルトを挟み込む切欠きと、中心部に垂設されて接続部材の螺条に螺合する止金具とを有する構成とした、と云うものである。   According to another configuration of the first invention, in the invention according to claim 1, the connecting plate is adjacent to a mounting hole through which a bolt screwed in the vicinity of the corner of one of the adjacent remaining molds is inserted. It is said that it has a structure having a notch for sandwiching a bolt screwed in the vicinity of the corner of the other remaining mold and a stopper that is suspended in the center and is screwed to the thread of the connecting member. is there.

上記構成では、連結プレートの、隣接する一方の残存型枠への確実な取り付けと、他方の残存型枠への容易な取り付けとを達成し得る。   With the above-described configuration, it is possible to achieve reliable attachment of the connecting plate to one of the adjacent remaining molds and easy attachment to the other remaining mold.

また第1発明の他の構成は、上記請求項1又は2記載の発明において、接続部材の先端をL字状に折り曲げた構成としたと云うものである。   According to another aspect of the present invention, in the first or second aspect of the present invention, the connection member has a distal end bent in an L shape.

上記構成では、L字状に折れ曲がった接続部材の先端である接続部と鋼矢板との接続を容易且つ確実に達成し得る。   In the said structure, the connection of the connection part which is the front-end | tip of the connection member bent in the L shape, and the steel sheet pile can be achieved easily and reliably.

また第1発明の他の構成は、上記請求項1乃至3のいずれか一項に記載の発明において、接続部材に、延長用のターンバックルを設ける構成としたと云うものである。   According to another configuration of the first invention, in the invention according to any one of the first to third aspects, the connection member is provided with a turnbuckle for extension.

上記構成では、接続部材の長さ調整の容易化を達成し得る。   In the above configuration, the length adjustment of the connecting member can be facilitated.

また第1発明の他の構成は、上記請求項2乃至4のいずれか一項に記載の発明において、取付け孔と切欠き内の奥部との間隔として、残存型枠の角部を構成する各辺から残存型枠のアンカーナットまでの距離の2倍に設定する構成としたと云うものである。   According to another configuration of the first invention, in the invention according to any one of claims 2 to 4, a corner portion of the remaining mold is formed as a distance between the mounting hole and the inner portion of the notch. In other words, the distance is set to twice the distance from each side to the anchor nut of the remaining mold.

上記構成では、隣接する両残存型枠への連結プレートの確実かつ高精度な取り付けを達成し得る。   With the above-described configuration, it is possible to achieve reliable and highly accurate attachment of the connecting plate to both adjacent remaining molds.

また第1発明の他の構成は、請求項2乃至5のいずれか一項に記載の発明において、連結プレートを略正方形状に形成すると共に、連結プレートの4つの角部を結ぶ対角線上で且つ対角線の交点から等距離となる4箇所の位置に、取付け孔又は切欠きを配置する構成としたと云うものである。   According to another configuration of the first invention, in the invention according to any one of claims 2 to 5, the connection plate is formed in a substantially square shape, on a diagonal line connecting the four corners of the connection plate, and In other words, the mounting holes or notches are arranged at four positions that are equidistant from the intersection of the diagonal lines.

上記構成では、1枚の連結プレートにより、左右(横方向)及び上下(高さ方向)に配置される4枚の残存型枠同士の連結を容易且つ確実に達成し得る。   In the above configuration, it is possible to easily and reliably achieve the connection between the four remaining molds arranged in the left and right (horizontal direction) and the top and bottom (height direction) by one connection plate.

また第2発明である連結壁の主たる構成は、上記いずれか記載の残存型枠用の連結治具を用いて複数の残存型枠を、横方向と高さ方向との少なくとも一方に連結して成ることを特徴とすると云うものである。   The main structure of the connecting wall according to the second invention is to connect a plurality of remaining molds to at least one of the horizontal direction and the height direction by using any one of the above-described residual mold connecting jigs. It is said that it is characterized by.

上記第2発明では、工場で生産されることで薄くて軽い残存型枠を使用することが可能となり、品質及び強度的に安定した連結壁の構築を達成し得る。   In the second invention, it is possible to use a thin and light residual formwork produced in a factory, and it is possible to achieve the construction of a connection wall that is stable in terms of quality and strength.

また第2発明の他の構成は、請求項7記載の発明において、残存型枠を平板状に形成すると共に、一方の面に複数の凹部を有する構成としたと云うものである。   According to another configuration of the second invention, in the invention according to claim 7, the remaining mold is formed in a flat plate shape and has a plurality of concave portions on one surface.

上記構成では、残存型枠を平板状とすることによる製造コストの低減と複数の凹部を設けることによる施設の長寿命化を達成し得る。   In the above configuration, the manufacturing cost can be reduced by making the remaining mold form a flat plate, and the life of the facility can be extended by providing a plurality of recesses.

また第3発明の主たる構成は、上記いずれか一項に記載の残存型枠用の連結治具を用いた鋼矢板の補修工法であって、
連結プレートを残存型枠のアンカーナットに対してボルトで固定する工程と、
既設の鋼矢板から所定の距離を隔てて対向する位置に、残存型枠を設置する工程と、
螺条が刻設された接続部材の基端を連結プレートの止金具に螺合させると共に、ねじ込み量を調整して接続部材の長さ寸法の調節を行う工程と、
接続部材の先端を鋼矢板に溶着固定する工程と、
先に設置した残存型枠の横方向又は高さ方向にて隣接する位置に次の残存型枠を配置すると共に、次の残存型枠を移動させ、先の残存型枠に固定した連結プレートの切欠き内に次の残存型枠のボルトを挟み込む工程と、
挟み込んだボルトを締結して隣接する両残存型枠同士を連結して連結壁を構築する工程と、
鋼矢板と連結壁との間にコンクリート又はモルタルを充填して固化させる工程と、を有することを特徴とすると云うものである。
The main structure of the third invention is a steel sheet pile repairing method using the connection jig for the remaining formwork as described in any one of the above items,
Fixing the connecting plate to the anchor nut of the remaining mold with a bolt;
A step of installing a remaining formwork at a position facing a predetermined distance from an existing steel sheet pile;
A step of screwing the base end of the connecting member engraved with the thread into the fastener of the connecting plate, adjusting the screwing amount, and adjusting the length of the connecting member;
A step of welding and fixing the tip of the connecting member to the steel sheet pile;
The next remaining mold form is arranged at a position adjacent in the horizontal direction or height direction of the previously installed remaining mold form, and the next remaining mold form is moved, and the connection plate fixed to the previous remaining mold form Sandwiching the next remaining formwork bolt in the notch;
Fastening the bolts sandwiched between them and connecting the two remaining molds adjacent to each other to construct a connecting wall;
And filling and solidifying concrete or mortar between the steel sheet pile and the connecting wall.

上記第3発明では、複数の残存型枠を連結した連結壁と鋼矢板との間に充填したコンクリート又はモルタルが強アルカリ性を有することから、鋼矢板表面に不動態皮膜が形成されることで、鋼矢板の腐蝕防止を達成する。   In the said 3rd invention, since the concrete or mortar filled between the connection wall which connected the some residual formwork, and the steel sheet pile has strong alkalinity, a passive film is formed in the steel sheet pile surface, Achieve corrosion prevention of steel sheet piles.

また第3発明の他の構成は、上記請求項9記載の発明において、接続部材の長さ寸法の調節に、ターンバックルを用いる、と云うものである。   According to another configuration of the third invention, a turnbuckle is used to adjust the length dimension of the connecting member in the invention according to the ninth aspect.

上記構成では、接続部材の長さ調整を容易且つ高精度に行うことを達成し得る。   In the said structure, it can achieve performing the length adjustment of a connection member easily and with high precision.

本発明は、上記した構成となっているので、以下に示す効果を奏する。   Since the present invention has the above-described configuration, the following effects can be obtained.

第1発明においては、連結治具を簡単且つ少ない部品点数で構成することにより、製造コストの低減を図ることができる。   In the first invention, it is possible to reduce the manufacturing cost by configuring the connecting jig simply and with a small number of parts.

また上記請求項1に記載の発明に、連結プレートを、隣接する一方の残存型枠の角部近傍に螺着されたボルトが挿通される取付け孔と、隣接する他方の残存型枠の角部近傍に螺着されたボルトを挟み込む切欠きと、中心部に垂設されて接続部材の螺条に螺合する止金具とを有する構成を加えたものでは、連結プレートを残存型枠に取り付ける作業を容易且つ確実に行うことが可能となり、作業効率の改善による工期の大幅な短縮及び施工費用の低減を図ることができる。しかも連結プレートにボルトを挟み込む切欠きを設けることにより、残存型枠のアンカーナットの設置位置に誤差があったとしても、この誤差を吸収できるため、隣接する残存型枠同士を隙間なく配置することが可能となる。   Further, in the invention according to claim 1, the connecting plate includes a mounting hole through which a bolt screwed in the vicinity of a corner portion of one adjacent remaining mold frame and a corner portion of the other adjacent remaining mold frame. In the case of adding a structure having a notch for sandwiching a bolt that is screwed in the vicinity and a stopper that is suspended from the center and is screwed into the thread of the connecting member, the work of attaching the connecting plate to the remaining formwork Can be performed easily and reliably, and the construction period can be greatly shortened and the construction cost can be reduced by improving the work efficiency. Moreover, even if there is an error in the installation position of the anchor nut of the remaining mold by providing a notch for sandwiching the bolt in the connecting plate, this error can be absorbed, so the adjacent remaining molds should be arranged without gaps. Is possible.

また上記請求項2に記載の発明に、接続部材の先端をL字状に折り曲げた構成を加えたものでは、L字状に折れ曲がった接続部材の先端部分を、鋼矢板と溶接する際の接続部として利用することができる。また接続部材を回転させることにより、接続部の長さ及び向きを自在に変えることができるため、接続部と鋼矢板との間の溶接作業を容易かつ確実に行うことができる。   Further, in the invention according to claim 2, in the configuration in which the tip of the connection member is bent in an L shape, the connection at the time of welding the tip portion of the connection member bent in an L shape to the steel sheet pile Can be used as a part. Moreover, since the length and direction of a connection part can be changed freely by rotating a connection member, the welding operation between a connection part and a steel sheet pile can be performed easily and reliably.

また上記請求項2乃至4のいずれか一項に記載の発明に、取付け孔と切欠き内の奥部との間隔として、残存型枠の角部を構成する各辺から残存型枠のアンカーナットまでの距離の2倍に設定する構成を加えたものでは、隣接する残存型枠同士を隙間なく配置することが可能となるため、打設したコンクリートが残存型枠の外側に流出することを防止することができる。   Further, in the invention according to any one of claims 2 to 4, the anchor nut of the remaining mold is formed from each side constituting the corner of the remaining mold as an interval between the mounting hole and the inner portion of the notch. In the case of adding a configuration that is set to twice the distance up to, it is possible to arrange the adjacent remaining molds without any gaps, so that the placed concrete is prevented from flowing out of the remaining molds. can do.

また上記請求項2乃至5のいずれか一項に記載の発明に、連結プレートを略正方形状に形成すると共に、連結プレートの4つの角部を結ぶ対角線上で且つ対角線の交点から等距離となる4箇所の位置に、取付け孔又は切欠きを配置する構成としたものでは、1枚の連結プレートにより、左右(横方向)及び上下(高さ方向)に配置される4枚の残存型枠同士の連結を効率良く連結することができる。   Further, in the invention according to any one of claims 2 to 5, the connecting plate is formed in a substantially square shape, and is equidistant on the diagonal line connecting the four corners of the connecting plate and from the intersection of the diagonal lines. In a structure in which mounting holes or notches are arranged at four positions, four remaining molds are arranged on the left and right (lateral direction) and up and down (height direction) by one connecting plate. Can be efficiently connected.

また第2発明である連結壁では、特に、残存型枠自体は工場で生産されるため、安定した品質及び強度の維持、及び薄くて軽量化に優れた、残存型枠とすることが容易である。このため、施工時に大型重機を使用する必要がなく、狭隘な施工場所であっても人力による施工を可能とすることができる。   In the connecting wall according to the second aspect of the invention, in particular, since the remaining mold itself is produced at the factory, it is easy to make a residual mold that maintains stable quality and strength, and is thin and excellent in weight reduction. is there. For this reason, it is not necessary to use a large heavy machine at the time of construction, and it is possible to perform construction by manpower even in a narrow construction place.

また上記請求項8に記載の発明に、残存型枠を平板状に形成すると共に、一方の面に複数の凹部を有する構成を加えたものでは、残存型枠を平板状とすることにより製造コストの低減を図ることができると共に、複数の凹部を設けることにより、計量化の達成と残存型枠の設置後に打設するコンクリート又はモルタルの付着性を向上させることによる施設の長寿命化を図ることができる。   Further, in the invention according to claim 8, the remaining mold is formed in a flat plate shape and a structure having a plurality of recesses on one surface is added. In addition to providing a plurality of recesses, it is possible to extend the life of the facility by achieving the measurement and improving the adhesion of the concrete or mortar to be placed after the installation of the remaining formwork. Can do.

また第3発明の鋼矢板の補修工法では、鋼矢板の腐蝕を防止することにより、鋼矢板が敷設された水路施設や護岸擁壁の長寿命化を図ることができる。   Moreover, in the steel sheet pile repairing method of the third aspect of the invention, it is possible to prolong the life of the water channel facility where the steel sheet pile is laid and the revetment retaining wall by preventing the corrosion of the steel sheet pile.

複数の残存型枠を連結して構成される連結壁は、鋼矢板から所定の距離を隔てて設置されるため、水路施設の水路幅が狭くなって通水面積が減少するが、平滑な壁面からなる残存型枠を使用することで鋼矢板水路壁面のような凹凸がなくなって粗度係数を小さくすることができるため、全体的には流下能力の低下による影響を小さくできる。   A connecting wall configured by connecting a plurality of remaining formwork is installed at a predetermined distance from the steel sheet pile, so that the waterway width of the waterway facility becomes narrow and the water flow area decreases, but the smooth wall surface By using the residual form made of, the unevenness like the steel sheet pile channel wall surface is eliminated and the roughness coefficient can be reduced, so that the influence of the decrease in the flow ability can be reduced as a whole.

また第3発明に、接続部材の長さ寸法の調整に、ターンバックルを用いる構成を加えたものでは、接続部材の長さ調整を容易且つ高精度することが可能となるため、溶接作業の作業効率を改善することができる。   In addition, in the third invention, when the length of the connecting member is adjusted and a configuration using a turnbuckle is added, the length of the connecting member can be adjusted easily and with high accuracy. Efficiency can be improved.

本発明の実施例として、残存型枠に取り付けた状態を示す連結治具の側面図である。It is a side view of the connection jig which shows the state attached to the residual mold as an Example of this invention. 連結治具を構成する連結プレートの一実施例を示し、Aは正方形状の連結プレートを示す平面図、BはAの半断面図である。One Example of the connection plate which comprises a connection jig is shown, A is a top view which shows a square-shaped connection plate, B is a half sectional view of A. 連結治具を構成する連結プレートの他の実施例を示し、Aは長方形状の連結プレートを示す平面図、BはAの半断面図である。The other Example of the connection plate which comprises a connection jig | tool is shown, A is a top view which shows a rectangular connection plate, B is a half sectional view of A. 本発明の連結治具を構成する接続部材を示す平面図である。It is a top view which shows the connection member which comprises the connection jig | tool of this invention. 本発明の連結壁を構成する残存型枠の実施例を示す斜視図である。It is a perspective view which shows the Example of the residual formwork which comprises the connection wall of this invention. 隣接する残存型枠同士を連結治具で連結する工程の一例を示す図である。It is a figure which shows an example of the process of connecting adjacent residual formwork with a connection jig. 複数の残存型枠を連結して構築した連結壁を示す背面図である。It is a rear view which shows the connection wall constructed | assembled by connecting several residual formwork. 鋼矢板の補修工法の一例として、複数の残存型枠を連結した連結壁を鋼矢板に対向させて設置した状態を示す斜視図である。It is a perspective view which shows the state which installed the connection wall which connected the some residual formwork as an example of the repair method of a steel sheet pile facing the steel sheet pile. 図8の平面図である。It is a top view of FIG. 図8に続く鋼矢板の補修工法の一例として、鋼矢板と連結壁との間にコンクリート又はモルタルを打設した状態を示す斜視図である。It is a perspective view which shows the state which laid concrete or mortar between the steel sheet pile and the connection wall as an example of the repair method of the steel sheet pile following FIG. 接続部材を延長した状態を示す図9同様の平面図である。It is a top view similar to FIG. 9 which shows the state which extended the connection member.

以下、本発明の実施の形態について図面を参照しつつ説明する。
まず第1発明である連結治具について説明する。
Embodiments of the present invention will be described below with reference to the drawings.
First, the connecting jig according to the first invention will be described.

図1は本発明の実施例として、残存型枠に取り付けた状態を示す連結治具の側面図、図2は連結治具を構成する連結プレートの一実施例を示し、図2Aは正方形状の連結プレートを示す平面図、図2BはAの半断面図、図3は連結治具を構成する連結プレートの他の実施例を示し、図3Aは長方形状の連結プレートを示す平面図、図3BはAの半断面図、図4は本発明の連結治具を構成する接続部材を示す平面図である。   FIG. 1 is a side view of a connecting jig showing a state where it is attached to a remaining mold as an embodiment of the present invention, FIG. 2 shows an embodiment of a connecting plate constituting the connecting jig, and FIG. FIG. 2B is a half sectional view of A, FIG. 3 shows another embodiment of the connecting plate constituting the connecting jig, FIG. 3A is a plan view showing the rectangular connecting plate, and FIG. 3B. Is a half sectional view of A, and FIG. 4 is a plan view showing a connecting member constituting the connecting jig of the present invention.

図1乃至図4に示すように第1発明である連結治具10は、連結プレート11と接続部材12とを有して構成される。連結プレート11及び接続部材12は、施工後にはコンクリート又はモルタル内に埋もれて水路面側に露出しないので、特に防食性に優れた金属、例えばステンレス鋼、アルミニウム、チタニウムなどの金属である必要はなく、一般的な鋼材により形成することが可能である。   As shown in FIGS. 1 to 4, the connecting jig 10 according to the first invention includes a connecting plate 11 and a connecting member 12. Since the connecting plate 11 and the connecting member 12 are buried in concrete or mortar after construction and are not exposed to the water channel surface side, it is not necessary to be a metal having particularly excellent corrosion resistance, such as stainless steel, aluminum, titanium, or the like. It can be formed of a general steel material.

図2に示す連結プレート11Aは略正方形からなる平板状であり、その中央部にはプレス加工により表面側に部分的に突出する平面十字形状の***部11aが対角線に沿って形成されている。平面十字形状の***部11aの中心部(クロス部分)には、例えば六角ナット状の止金具11bがカシメ固定されることにより、連結プレート11に垂設されている。この止金具11bの内周面には螺条11eが刻設されている。   The connecting plate 11A shown in FIG. 2 is a flat plate having a substantially square shape, and a flat cross-shaped raised portion 11a that partially protrudes to the surface side by pressing is formed along the diagonal line at the center. At the center (cross portion) of the flat cross-shaped raised portion 11a, for example, a hexagonal nut-like fastener 11b is caulked and fixed to the connecting plate 11. A thread 11e is engraved on the inner peripheral surface of the fastener 11b.

また図2に示す連結プレート11Aの一辺側(下辺側)の両角部近傍には2つの取付け孔11cが穿設され、他辺側(上辺側)の両角部近傍には2つの切欠き11dが形成されている。より詳しくは、2つの取付け孔11c及び2つの切欠き11dの奥部11d1は、連結プレート11Aの4つの角部を結ぶ対角線上で且つ対角線の交点(***部11aの中心部)から等距離となる4箇所の位置に位置している。これにより、2つの取付け孔11c間の間隔、2つの切欠き11dの奥部11d1間の間隔、及び取付け孔11cと切欠き11d内の奥部11d1との間の間隔(対角線に沿う間隔を除く。)は、全て等しい間隔Lに設定されている。なお、この間隔Lは、後述するように残存型枠1の角部を構成する2つの辺から残存型枠1のアンカーナット3までの距離の2倍に相当する。   Also, two attachment holes 11c are formed in the vicinity of both corners on one side (lower side) of the connecting plate 11A shown in FIG. 2, and two notches 11d are formed in the vicinity of both corners on the other side (upper side). Is formed. More specifically, the two mounting holes 11c and the inner portions 11d1 of the two notches 11d are on the diagonal line connecting the four corners of the connecting plate 11A and are equidistant from the intersection of the diagonal lines (the central part of the raised portion 11a). It is located at four positions. Thereby, the distance between the two mounting holes 11c, the distance between the back portions 11d1 of the two notches 11d, and the distance between the mounting holes 11c and the back portion 11d1 in the notches 11d (excluding the distance along the diagonal line). .) Are set to equal intervals L. The interval L corresponds to twice the distance from the two sides constituting the corner of the remaining mold 1 to the anchor nut 3 of the remaining mold 1 as will be described later.

他方、図3に示す連結プレート11Bは略長方形からなる平板状であり、その中央部にはプレス加工により表面側に部分的に突出する***部11aが形成されている。上記同様、この***部11aの中心部には止金具11bが垂設され、止金具11bの内周面には螺条11eが刻設されている。   On the other hand, the connecting plate 11B shown in FIG. 3 is a flat plate having a substantially rectangular shape, and a protruding portion 11a that partially protrudes to the surface side is formed by pressing at the center. In the same manner as described above, a fastener 11b is suspended from the center of the raised portion 11a, and a thread 11e is engraved on the inner peripheral surface of the fastener 11b.

また図3に示す連結プレート11Bの長手方向の一端(下端)側には取付け孔11cが穿設され、他端(上端)側には切欠き11dが形成されている。取付け孔11cと切欠き11d内の奥部11d1との間隔は上記同様のLである。   Further, a mounting hole 11c is formed on one end (lower end) side in the longitudinal direction of the connecting plate 11B shown in FIG. 3, and a notch 11d is formed on the other end (upper end) side. The interval between the mounting hole 11c and the inner portion 11d1 in the notch 11d is L as described above.

図4に示すように、接続部材12は、丸鋼の基端に螺条12aを刻設し、先端側をL字形状に折り曲げて接続部12bとしたものである。そして、接続部材12の螺条12aを、連結プレート11の止金具11bの内周面に形成された螺条11eに螺合させることにより、図1に示すような連結治具10となる。この際、接続部材12のねじ込み量(螺合の程度)を調整することにより、連結治具10の長さ寸法Mを自在に調節することが可能となっている。   As shown in FIG. 4, the connection member 12 has a thread 12a cut at the base end of round steel, and the distal end side is bent into an L shape to form a connection portion 12b. Then, the screw 12a of the connecting member 12 is screwed to the screw 11e formed on the inner peripheral surface of the fastener 11b of the connecting plate 11, thereby forming the connecting jig 10 as shown in FIG. At this time, the length dimension M of the connecting jig 10 can be freely adjusted by adjusting the screwing amount (degree of screwing) of the connecting member 12.

次に、連結治具を用いて残存型枠を連結することにより構築される連結壁について説明する。
図5は本発明の連結壁を構成する残存型枠の実施例を示す斜視図である。
Next, a connecting wall constructed by connecting the remaining molds using a connecting jig will be described.
FIG. 5 is a perspective view showing an embodiment of the remaining mold forming the connecting wall of the present invention.

図5に示すように、残存型枠1はコンクリート製の略正方形状の平板であり、施工後に内面となる一方の面には複数の凹部2が設けられ、外面側となる他方の面は平滑面で形成されている。残存型枠1の内面に複数の凹部2を設けることにより、残存型枠1の軽量化、及び残存型枠1と設置後に打設するコンクリート又はモルタル22との付着性の向上が可能となっている。   As shown in FIG. 5, the remaining mold 1 is a substantially square flat plate made of concrete, and a plurality of recesses 2 are provided on one surface that becomes the inner surface after construction, and the other surface that becomes the outer surface side is smooth. It is formed with a surface. By providing the plurality of recesses 2 on the inner surface of the remaining mold 1, it is possible to reduce the weight of the remaining mold 1 and improve the adhesion between the remaining mold 1 and the concrete or mortar 22 to be placed after installation. Yes.

残存型枠1の4つの角部近傍には、連結治具10を取り付けるためのアンカーナット3がそれぞれ埋設されている。アンカーナット3が埋設される位置は残存型枠1の角部を形成する2つの辺から等しい位置であり、これは上記間隔Lの1/2に相当する位置である。   Anchor nuts 3 for attaching the connecting jig 10 are embedded in the vicinity of the four corners of the remaining mold 1. The position where the anchor nut 3 is embedded is an equal position from two sides forming the corner of the remaining mold 1, and this is a position corresponding to ½ of the interval L.

次に、連結治具を用いた鋼矢板の補修工法ついて説明する。
図6は隣接する残存型枠同士を連結治具で連結する工程の一例を示す図、図7は複数の残存型枠を連結して構築した連結壁を示す背面図、図8は鋼矢板の補修工法の一例として、複数の残存型枠を連結した連結壁を鋼矢板に対向させて設置した状態を示す斜視図、図9は図8の平面図、図10は図8に続く鋼矢板の補修工法の一例として、鋼矢板と連結壁との間にコンクリート又はモルタルを打設した状態を示す斜視図、図11は接続部材を延長した状態を示す図9同様の平面図である。
Next, a steel sheet pile repair method using a connecting jig will be described.
6 is a view showing an example of a process of connecting adjacent remaining molds with a connecting jig, FIG. 7 is a rear view showing a connection wall constructed by connecting a plurality of remaining molds, and FIG. 8 is a view of a steel sheet pile. As an example of the repair method, a perspective view showing a state in which a connecting wall connecting a plurality of remaining molds is installed facing a steel sheet pile, FIG. 9 is a plan view of FIG. 8, and FIG. 10 is a steel sheet pile following FIG. As an example of the repair method, a perspective view showing a state in which concrete or mortar is placed between a steel sheet pile and a connecting wall, and FIG. 11 is a plan view similar to FIG. 9 showing a state in which a connecting member is extended.

(1)連結プレートの固定
図6に示すように、ボルト4を各連結プレート11(11A,11B)の取付け孔11c及び残存型枠1の一方の辺(図6では右辺)1Aの上下に設けられたアンカーナット3に螺合させることにより、連結プレート11を残存型枠1にそれぞれ締結固定する。この際、例えば地面に接する側(下側)のアンカーナット3には長方形状の連結プレート11Bを固定し、上側のアンカーナット3には正方形状の連結プレート11Aを固定する。
(1) Fixing of connecting plate As shown in FIG. 6, bolts 4 are provided above and below the mounting hole 11c of each connecting plate 11 (11A, 11B) and one side (the right side in FIG. 6) 1A of the remaining mold 1 The connecting plate 11 is fastened and fixed to the remaining mold 1 by screwing with the anchor nut 3. At this time, for example, a rectangular connection plate 11B is fixed to the anchor nut 3 on the side in contact with the ground (lower side), and a square connection plate 11A is fixed to the upper anchor nut 3.

(2)残存型枠の設置
連結プレート11(11A,11B)を固定した残存型枠1を、既設の鋼矢板20の正面に、鋼矢板20から所定の距離を隔てた位置に対向する状態で設置する。
(2) Installation of Remaining Formwork In a state where the remaining formwork 1 to which the connecting plate 11 (11A, 11B) is fixed is opposed to a position at a predetermined distance from the steel sheet pile 20 in front of the existing steel sheet pile 20. Install.

(3)接続部材の取り付け及び長さ調節
次に、螺条12aが刻設された接続部材12の基端を、連結プレート11の各止金具11b内に螺合させる。このとき、接続部材12のねじ込み量を調整して接続部材12先端の接続部12bが鋼矢板20に接するように調節する。なお、接続部材12の長さ寸法Mが足りない場合には、図11に示すようなターンバックル15を利用して延長することが好ましい。
(3) Attachment and length adjustment of connecting member Next, the base end of the connecting member 12 in which the thread 12a is engraved is screwed into each fastener 11b of the connecting plate 11. At this time, the screwing amount of the connecting member 12 is adjusted so that the connecting portion 12 b at the tip of the connecting member 12 is in contact with the steel sheet pile 20. In addition, when the length dimension M of the connection member 12 is insufficient, it is preferable to extend using the turnbuckle 15 as shown in FIG.

(4)接続部材と鋼矢板との接続
次に、接続部材12先端の接続部12bとこれに対向する鋼矢板20表面との間を溶接手段により溶着固定する。これにより、残存型枠1が、鋼矢板20の正面で、且つ所定の距離を隔てた位置に強固に設置される。
(4) Connection between connection member and steel sheet pile Next, the connection portion 12b at the tip of the connection member 12 and the surface of the steel sheet pile 20 facing the connection portion are welded and fixed by welding means. Thereby, the residual formwork 1 is firmly installed in the front face of the steel sheet pile 20 and at a position separated by a predetermined distance.

(5)次の残存枠体の設置
次に、先ほど設置した残存型枠1の隣に、次の残存型枠1を隣接設置する。
(5) Installation of the next remaining mold body Next, the next remaining mold form 1 is installed adjacent to the remaining mold form 1 installed earlier.

上記同様、次の残存型枠1も、連結プレート(11A,11B)を一方の辺(右辺)1Aに固定した残存型枠1を用いる。ただし、残存型枠1の他方の辺(図6では左辺)1Bの上下のアンカーナット3には、あらかじめボルト4を軽く螺着させた状態で行うことが好ましい。   Similarly to the above, the next remaining mold 1 uses the remaining mold 1 in which the connecting plate (11A, 11B) is fixed to one side (right side) 1A. However, it is preferable that the bolt 4 is lightly screwed in advance to the upper and lower anchor nuts 3 on the other side (left side in FIG. 6) 1B of the remaining mold 1.

次の残存型枠1は、連結プレート11が取り付けられていない他方の辺(図6ではボルト4を螺着した左辺)1Bを、先の残存型枠1の連結プレート11が取り付けられた一方の辺(右辺)1Aに向くように設置する。そして、次の残存型枠1を、先の残存型枠1に接近する方向にスライド移動させる。この移動の際、ボルト4の軸が連結プレート11,11Bのそれぞれの切欠き11dに挟み込まれて奥部11d1方向に案内されることになる。   The next remaining mold 1 has the other side (the left side where the bolt 4 is screwed in FIG. 6) 1B to which the connecting plate 11 is attached, the other side 1B to which the connecting plate 11 of the previous remaining mold 1 is attached. Install to face side (right side) 1A. Then, the next remaining mold 1 is slid in a direction approaching the previous remaining mold 1. During this movement, the shaft of the bolt 4 is sandwiched between the notches 11d of the connecting plates 11 and 11B and guided in the direction of the inner portion 11d1.

(6)連結壁の構築
そして、先の残存型枠1の一方の辺(右辺)1Aに、次の残存型枠1の他方の辺(左辺)1Bを当接させた状態おいて、次の残存型枠1側のボルト4を締めるけることにより、隣接する先の残存型枠1と次の残存型枠1とがこの間に跨設された連結プレート11(11A,11B)によって連結されて成る連結壁17が構築される。
(6) Construction of connecting wall Then, in a state where the other side (left side) 1B of the next remaining mold 1 is in contact with one side (right side) 1A of the previous remaining mold 1, the following By tightening the bolt 4 on the remaining mold 1 side, the adjacent remaining mold 1 and the next remaining mold 1 are connected by a connecting plate 11 (11A, 11B) straddling between them. A connecting wall 17 is constructed.

なお、次の残存型枠1に対し、上記(3)及び(4)同様の工程を行うことにより、接続部材12を介して次の残存型枠1と鋼矢板20との間を強固に固定することが可能となる。   The next remaining mold 1 is firmly fixed between the next remaining mold 1 and the steel sheet pile 20 through the connecting member 12 by performing the same steps (3) and (4) as above. It becomes possible to do.

また上記(1)乃至(6)の各工程を繰り返して行うことにより、図9に示すように複数の残存型枠1が連結治具10によって横方向に連結される連結壁17を構築することができる。さらに、上記(5)の工程を先の残存枠体1の上端に対して行うことにより、図7及び図8に示すような高さ方向にも次の残存枠体1が連結されるようになり、より拡張された連結壁17とすることができる。   Further, by repeating the steps (1) to (6), a connecting wall 17 is constructed in which a plurality of remaining molds 1 are connected laterally by the connecting jig 10 as shown in FIG. Can do. Further, by performing the step (5) on the upper end of the previous remaining frame 1, the next remaining frame 1 is connected in the height direction as shown in FIGS. 7 and 8. Thus, the connecting wall 17 can be expanded.

上記連結治具10を使用する方法では、残存型枠1同士を横方向に連結する際に、先の残存型枠1と次の残存型枠1とが対向する隙間に手を差し入れて、次の残存型枠1を支持する作業が不要となるため、作業の容易化と作業効率の改善を図ることができる。   In the method using the connecting jig 10, when the remaining molds 1 are connected to each other in the lateral direction, a hand is inserted into the gap where the previous remaining mold 1 and the next remaining mold 1 face each other. Since the work for supporting the remaining mold 1 is not necessary, the work can be facilitated and the work efficiency can be improved.

(7)コンクリート又はモルタルの打設
図10に示すように、最後の工程では既設の鋼矢板20と連結壁17との間に、コンクリート又はモルタル22を充填して固化させることにより、鋼矢板20の補修が完了する。
(7) Placing concrete or mortar As shown in FIG. 10, in the last step, a concrete or mortar 22 is filled between the existing steel sheet pile 20 and the connecting wall 17 to be solidified. Repair is complete.

上記補修方法では、コンクリート又はモルタル22が有する強アルカリ性により、鋼矢板20表面に安定的な不動態皮膜を形成することができるため、鋼矢板20のこれ以上の腐食を防止し、水路施設等の長寿命化を達成することが可能となる。   In the above repair method, the strong alkalinity of the concrete or the mortar 22 can form a stable passive film on the surface of the steel sheet pile 20, thereby preventing further corrosion of the steel sheet pile 20, Longer life can be achieved.

また連結壁17の外面は平滑な壁面からなる残存型枠1で形成されており、鋼矢板水路の凹凸状の壁面を隠して粗度係数を低減することができるため、通水面積の減少にもかかわらず、全体的な流下能力の低下を防止することができる。   Further, the outer surface of the connecting wall 17 is formed of a remaining mold 1 made of a smooth wall surface, and the roughness coefficient can be reduced by concealing the uneven wall surface of the steel sheet pile water channel, thereby reducing the water flow area. Nevertheless, it is possible to prevent a decrease in the overall flow capacity.

さらに本発明では、連結治具10をコンクリート又はモルタル22内に埋設させることができるため、連結治具10自体の腐食を防止し、コンクリート製の連結壁17自体、又は鋼矢板20と連結壁17との間に打設されたコンクリート又はモルタル22の劣化の原因となるひび割れの発生を防止することができ、この点においても鋼矢板の長寿命化を実現することが可能となる。   Furthermore, in this invention, since the connection jig | tool 10 can be embed | buried in concrete or the mortar 22, corrosion of the connection jig | tool 10 itself is prevented, the concrete connection wall 17 itself, or the steel sheet pile 20 and the connection wall 17 are used. It is possible to prevent the occurrence of cracks that cause deterioration of the concrete or mortar 22 placed between the steel sheet and the steel sheet pile.

特に、本発明の連結壁17を構築するコンクリート製の残存型枠1は、品質管理の行き届いた工場で製造されるため、品質だけでなく、薄くて軽く、しかも強度的にも強い特性を有する。このため、残存型枠1の施工時に大型の重機が不要であり、狭隘な施工場所であっても水路内から人力による施工も可能である。   In particular, the concrete residual formwork 1 for constructing the connecting wall 17 of the present invention is manufactured in a factory with careful quality control, and therefore has a characteristic that is thin, light and strong in strength as well as quality. . For this reason, a large-sized heavy machine is unnecessary at the time of construction of the residual formwork 1, and construction by human power is also possible from the inside of a waterway even in a narrow construction place.

以上、実施例に沿って本発明の構成とその作用効果について説明したが、本発明の実施の形態は上記実施例に限定されるものではない。   As mentioned above, although the structure of this invention and its effect were demonstrated along the Example, embodiment of this invention is not limited to the said Example.

例えば、上記実施例では、1枚の連結プレート11(11A,11B)に取付け孔11cと切欠き11dと同数(4ヶまたは2ヶ)設けた構成を示して説明したが、1枚の連結プレートに取付け孔11cと切欠き11dとを設ける比率は適宜変更可能である。例えば、全て取付け孔11cとする構成としてもよいし、全て切欠き11dとする構成も可能である。ただし、上記実施例のように一辺側に取付け孔11cを形成し、他辺側に切欠き11dを形成する構成の方が、作業効率や強度を高めることができる点で有利である。   For example, in the above-described embodiment, the structure in which the same number (four or two) of the mounting holes 11c and the notches 11d are provided in one connection plate 11 (11A, 11B) has been described. The ratio in which the attachment hole 11c and the notch 11d are provided can be changed as appropriate. For example, it is good also as a structure which makes all the attachment holes 11c, and the structure which makes all the notches 11d is also possible. However, the configuration in which the attachment hole 11c is formed on one side and the notch 11d is formed on the other side as in the above embodiment is advantageous in that the working efficiency and strength can be increased.

また上下に拡張する場合の鋼矢板の補修工法は、最初に残存型枠1を横方向に連結して下段側の連結へ連結壁17を構築し、次にこれらの上に残存型枠1を連結して上段側の連結壁17を構築する工法でもよし、あるいは最初に上下に連結した2枚の連結壁17を複数形成し、次にこれらを横方向に連結して行く工法でもよい。   In addition, the steel sheet pile repair method when extending vertically is to first connect the remaining formwork 1 in the horizontal direction and construct the connecting wall 17 to the lower connection, and then place the remaining formwork 1 on these. A construction method in which the upper connection walls 17 are connected to each other may be used, or a construction method in which a plurality of two connection walls 17 that are first connected in the vertical direction are formed and then these are connected laterally may be employed.

1 : 残存型枠
1A : 残存型枠の一辺
1B : 残存型枠の他辺
2 : 凹部
3 : アンカーナット
4 : ボルト
10 : 連結治具
11 : 連結プレート
11A : 正方形状の連結プレート
11B : 長方形状の連結プレート
11a : ***部
11b : 止金具
11c : 取付け孔
11d : 切欠き
11e : 螺条
11d1: 切欠きの奥部
12 : 接続部材
12a : 螺条
12b : 接続部
15 : ターンバックル
17 : 連結壁
20 : 鋼矢板
22 : コンクリート又はモルタル
1: Residual mold 1A: One side 1B of the remaining mold 2: Other side 2 of the remaining mold: Recess 3: Anchor nut 4: Bolt 10: Connecting jig 11: Connecting plate 11A: Square connecting plate 11B: Rectangular shape Connecting plate 11a: raised portion 11b: fastener 11c: mounting hole 11d: notch 11e: screw 11d1: notch deep 12: connecting member 12a: screw 12b: connecting 15: turnbuckle 17: connecting wall 20: Steel sheet pile 22: Concrete or mortar

Claims (10)

鋼矢板(20)に対向配置された残存型枠(1)同士を連結する連結治具であって、
隣接する残存型枠(1)間に跨設されて前記残存型枠(1)同士を連結する連結プレート(11)と、基端に前記連結プレート(11)に螺合する螺条(12a)を刻設すると共に、先端に前記鋼矢板(20)に接続される接続部(12b)を設けた接続部材(12)と、を有する構成としたことを特徴とする残存型枠用の連結治具。
It is a connecting jig for connecting the remaining molds (1) arranged opposite to the steel sheet pile (20),
A connecting plate (11) straddling between adjacent remaining molds (1) and connecting the remaining molds (1) to each other, and a screw (12a) screwed to the connecting plate (11) at the base end And a connecting member (12) provided with a connecting portion (12b) connected to the steel sheet pile (20) at the tip thereof, and a coupling treatment for the remaining formwork, Ingredients.
連結プレート(11)を、隣接する一方の残存型枠(1)の角部近傍に螺着されたボルト(4)が挿通される取付け孔(11c)と、隣接する他方の残存型枠(1)の角部近傍に螺着されたボルト(4)を挟み込む切欠き(11d)と、中心部に垂設されて接続部材(12)の螺条(12a)に螺合する止金具(11b)とを有する構成とした請求項1記載の残存型枠用の連結治具。   An attachment hole (11c) through which a bolt (4) screwed in the vicinity of a corner of one of the adjacent remaining molds (1) is inserted into the connecting plate (11) and the other remaining mold (1 ) And a notch (11d) that sandwiches the bolt (4) screwed in the vicinity of the corner of the bracket, and a fastener (11b) that is suspended from the center and screwed into the thread (12a) of the connecting member (12) The connecting jig for a remaining mold according to claim 1, wherein: 接続部材(12)の先端をL字状に折り曲げた構成とした請求項1又は2記載の残存型枠用の連結治具。   The connection jig for a residual mold according to claim 1 or 2, wherein the connecting member (12) has a distal end bent in an L shape. 接続部材(12)に、延長用のターンバックル(15)を設ける構成とした請求項1乃至3のいずれか一項に記載の残存型枠用の連結治具。   The connection jig for the remaining formwork according to any one of claims 1 to 3, wherein an extension turnbuckle (15) is provided on the connection member (12). 取付け孔(11c)と切欠き(11d)内の奥部(11d1)との間隔(L)として、残存型枠(1)の角部を構成する各辺から残存型枠(1)のアンカーナット(3)までの距離の2倍に設定する構成とした請求項2乃至4のいずれか一項に記載の残存型枠用の連結治具。   As an interval (L) between the mounting hole (11c) and the inner portion (11d1) in the notch (11d), the anchor nut of the remaining mold (1) from each side constituting the corner of the remaining mold (1) The connection jig for a residual mold according to any one of claims 2 to 4, wherein the connection jig is set to be twice the distance to (3). 連結プレート(11)を略正方形状に形成すると共に、該連結プレート(11)の4つの角部を結ぶ対角線上で且つ前記対角線の交点から等距離となる4箇所の位置に、取付け孔(11c)又は切欠き(11d)を配置する構成とした請求項2乃至5のいずれか一項に記載の残存型枠用の連結治具。   The connecting plate (11) is formed in a substantially square shape, and the mounting holes (11c) are formed at four positions on the diagonal line connecting the four corners of the connecting plate (11) and equidistant from the intersection of the diagonal lines. ) Or a notch (11d). The connecting jig for a remaining mold according to any one of claims 2 to 5. 請求項1乃至6のいずれか一項に記載の残存型枠用の連結治具(10)を用いて複数の残存型枠(1)を、横方向と高さ方向との少なくとも一方に連結して成ることを特徴とする連結壁。   A plurality of remaining molds (1) are connected to at least one of a horizontal direction and a height direction using the connecting jig (10) for residual molds according to any one of claims 1 to 6. A connecting wall characterized by comprising 残存型枠(1)を平板状に形成すると共に、一方の面に複数の凹部(2)を有する構成とした請求項7記載の連結壁。   The connecting wall according to claim 7, wherein the remaining mold (1) is formed in a flat plate shape and has a plurality of recesses (2) on one surface. 請求項1乃至6のいずれか一項に記載の残存型枠用の連結治具(10)を用いた鋼矢板の補修工法であって、
連結プレート(11)を残存型枠(1)のアンカーナット(3)に対してボルト(4)で固定する工程と、
既設の鋼矢板(20)から所定の距離を隔てて対向する位置に、前記残存型枠(1)を設置する工程と、
螺条(12a)が刻設された接続部材(12)の基端を前記連結プレート(11)の止金具(11b)に螺合させると共に、ねじ込み量を調整して前記接続部材(12)の長さ寸法(M)の調節を行う工程と、
前記接続部材(12)の先端を前記鋼矢板(20)に溶着固定する工程と、
先に設置した残存型枠(1)の横方向又は高さ方向にて隣接する位置に次の残存型枠(1)を配置すると共に、前記次の残存型枠(1)を移動させ、前記先の残存型枠(1)に固定した連結プレート(11)の切欠き(11d)内に前記次の残存型枠(1)のボルト(4)を挟み込む工程と、
挟み込んだボルト(4)を締結して隣接する両残存型枠(1)同士を連結して連結壁(17)を構築する工程と、
前記鋼矢板(20)と前記連結壁(17)との間にコンクリート又はモルタル(22)を充填して固化させる工程と、を有することを特徴とする鋼矢板の補修工法。
A steel sheet pile repairing method using the connection jig (10) for residual mold according to any one of claims 1 to 6,
Fixing the connecting plate (11) to the anchor nut (3) of the remaining mold (1) with a bolt (4);
Installing the remaining formwork (1) at a position facing the existing steel sheet pile (20) at a predetermined distance;
The base end of the connecting member (12) in which the thread (12a) is engraved is screwed to the fastener (11b) of the connecting plate (11), and the screwing amount is adjusted to adjust the screwing amount of the connecting member (12). Adjusting the length dimension (M);
Welding and fixing the tip of the connecting member (12) to the steel sheet pile (20);
The next remaining formwork (1) is disposed at a position adjacent to the remaining formwork (1) installed in the horizontal direction or the height direction, and the next remaining formwork (1) is moved, Sandwiching the bolt (4) of the next remaining mold (1) in the notch (11d) of the connecting plate (11) fixed to the previous remaining mold (1);
A step of fastening the bolts (4) sandwiched and connecting the two remaining molds (1) adjacent to each other to construct a connecting wall (17);
A method of repairing a steel sheet pile, comprising the step of filling and solidifying concrete or mortar (22) between the steel sheet pile (20) and the connecting wall (17).
接続部材(12)の長さ寸法(M)の調節に、ターンバックル(15)を用いる請求項9記載の鋼矢板の補修工法。   The steel sheet pile repair method according to claim 9, wherein a turnbuckle (15) is used to adjust the length dimension (M) of the connecting member (12).
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