JP2006161375A - Connection structure of mutual steel pipe sheet piles - Google Patents

Connection structure of mutual steel pipe sheet piles Download PDF

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JP2006161375A
JP2006161375A JP2004353226A JP2004353226A JP2006161375A JP 2006161375 A JP2006161375 A JP 2006161375A JP 2004353226 A JP2004353226 A JP 2004353226A JP 2004353226 A JP2004353226 A JP 2004353226A JP 2006161375 A JP2006161375 A JP 2006161375A
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steel pipe
peripheral surface
sheet pile
pipe sheet
joint
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Kenji Saikai
健二 西海
Hisao Yamashita
久男 山下
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Nippon Steel Corp
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Nippon Steel Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection structure of mutual steel pipe sheet piles excellent in workability increasing the shearing force of a fitting part to aim at the formation of the connecting structure enhancing the whole rigidity of a steel pipe sheet pile foundation. <P>SOLUTION: In this connection structure 5 for fitting a pair of facing joint steel pipes 3a, 3b of the adjacent steel pipe sheet piles 1 and filling a fluidic solidifying material into the fitting part 6 to connect the steel pipe sheet piles 1, one joint steel pipe 3a has a projecting part on the outer peripheral surface, and the other joint steel pipe 3b has a projecting part on the inner peripheral surface. The fitting part 6 formed of the pair of joint steel pipes 3a, 3b and filled with mortar can be roughly divided into three spaces A, B, C, and since the outer peripheral part of the space C is surrounded by the outer peripheral surface having the projecting part of the one joint steel pipe 3a, and the inner peripheral surface of the projecting part of the other joint steel pipe 3b, the space C has high shearing yield strength. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は土留め壁構造及び鋼管矢板基礎など鋼管矢板を連結して構築する鋼管矢板継手及び継手連結構造に関する。   The present invention relates to a steel pipe sheet pile joint and a joint connection structure constructed by connecting steel pipe sheet piles such as a retaining wall structure and a steel pipe sheet pile foundation.

鋼管矢板は、建設構造物の大型化・大深度化、軟弱地盤での建設工事増加にともなって、港湾・河川(岸壁・護岸・波除堤)、都市土木(土留め・締切り)、橋梁(鋼管矢板基礎)等に広く使用されている。   Steel pipe sheet piles have increased in size and depth of construction structures and increased construction work on soft ground. Widely used for sheet pile foundations).

特に、橋脚基礎工事において、鋼管矢板本管の外周面に、長手方向に延びるスリットを有する継手鋼管が一体に固定された鋼管矢板を用い、複数本の鋼管矢板を円形、小判形、矩形などの閉鎖形状になるように地盤中に打設し、その閉鎖形状の内部空間に頂版コンクリートを施工して構築される鋼管矢板基礎は、鋼管矢板が基礎杭と仮締切り用の壁体を兼ねるために、経済的・合理的な設計・施工が可能である。   In particular, in the pier foundation work, a steel pipe sheet pile in which a joint steel pipe having a slit extending in the longitudinal direction is integrally fixed to the outer peripheral surface of the steel pipe sheet pile main pipe is used, and a plurality of steel pipe sheet piles are round, oval, rectangular, etc. Steel pipe sheet pile foundations that are constructed by placing them in the ground so as to have a closed shape and constructing top plate concrete in the internal space of the closed shape, because the steel pipe sheet pile serves as the foundation pile and the wall for temporary cut-off In addition, economical and rational design and construction are possible.

かかる鋼管矢板基礎の施工にあたっては、図14に示すように、鋼管矢板40を地盤内に打設し、隣接する鋼管矢板40の継手鋼管41bを先に打設した鋼管矢板40の継手鋼管41aに嵌合するように打設して嵌合部42を形成する。この嵌合部42は空間A、B、Cの3つの空間に分割でき、それぞれの空間にウォータージェット又はエアリフトによる流体の注入用パイプを孔底まで挿入し、圧縮水又は圧縮気体を注入しながら引き上げて空間内の土砂を除去すると共に継手鋼管41a、41bの内面を清掃した後に、嵌合部42の空間A、B、Cのぞれぞれの空間にモルタル充填用パイプを孔底まで挿入し、モルタルを注入しながら引き上げて空間内をモルタル充填する。   In the construction of the steel pipe sheet pile foundation, as shown in FIG. 14, the steel pipe sheet pile 40 is driven into the ground, and the joint steel pipe 41 b of the adjacent steel pipe sheet pile 40 is first placed on the joint steel pipe 41 a of the steel pipe sheet pile 40. The fitting part 42 is formed by placing so as to be fitted. The fitting portion 42 can be divided into three spaces A, B, and C. A pipe for injecting a fluid by a water jet or an air lift is inserted into each space to the bottom of the hole, and compressed water or compressed gas is injected. Pull up to remove earth and sand in the space and clean the inner surfaces of the joint steel pipes 41a and 41b, and then insert a mortar filling pipe into each of the spaces A, B and C of the fitting portion 42 to the bottom of the hole. Then, it is pulled up while injecting mortar to fill the space with mortar.

なお、非特許文献1には、鋼管矢板40における継手鋼管41a、41bとして、一般に突起の無い外径165.2mm、板厚11mmの円形鋼管を用い、継手間隔の標準値は継手管外径の1.5倍とすることが記載されており、また、図14に示すように、2つの鋼管矢板の中心を結ぶ線上における空間A、B、Cの鋼管矢板連結方向の長さは、すべて継手鋼管の外径Dの0.5倍とすることが図示されている。   In Non-Patent Document 1, as the joint steel pipes 41a and 41b in the steel pipe sheet pile 40, generally, a round steel pipe having an outer diameter of 165.2 mm and a plate thickness of 11 mm without projections is used, and the standard value of the joint interval is the joint pipe outer diameter. It is described that the length is 1.5 times, and as shown in FIG. 14, the lengths in the connecting direction of the steel pipe sheet piles of the spaces A, B, and C on the line connecting the centers of the two steel pipe sheet piles are all joints. It is illustrated to be 0.5 times the outer diameter D of the steel pipe.

鋼管矢板基礎に水平力が作用した場合には、嵌合部に鋼管軸方向のせん断力が作用し、作用せん断力が嵌合部のせん断耐力を上回ると、嵌合部にずれが発生して、橋脚全体の曲げ剛性が低下することになる。すなわち、鋼管矢板基礎の曲げ剛性は嵌合部のせん断耐力に大きく影響しており、嵌合部のせん断耐力が増加すれば,鋼管矢板基礎の曲げ剛性を改善することができる。   When horizontal force is applied to the steel pipe sheet pile foundation, if the shearing force in the axial direction of the steel pipe acts on the fitting part and the acting shear force exceeds the shear strength of the fitting part, the fitting part will be displaced. The bending rigidity of the entire pier will be reduced. That is, the bending stiffness of the steel pipe sheet pile foundation greatly affects the shear strength of the fitting portion. If the shear strength of the fitting portion increases, the bending stiffness of the steel pipe sheet pile foundation can be improved.

非特許文献2には、嵌合部のせん断耐力を増加させる方法として、継手鋼管の内面にのみに突起を設け、この突起の効果によって継手鋼管とモルタルの付着強度を増加させる方法が記載されている。さらに、嵌合部のせん断耐力を増加させる別の方法として、継手鋼管の径を大きくし、継手鋼管とモルタルの付着面積を増加させる方法が記載されている。   Non-Patent Document 2 describes a method for increasing the shear strength of the fitting portion by providing a protrusion only on the inner surface of the joint steel pipe and increasing the bond strength between the joint steel pipe and the mortar by the effect of this protrusion. Yes. Furthermore, as another method for increasing the shear strength of the fitting portion, a method for increasing the diameter of the joint steel pipe and increasing the adhesion area of the joint steel pipe and the mortar is described.

また、特許文献1には、図15に示すように、継手鋼管50の内面にのみに突起51を設け、嵌合部52に所定の値のせん断力が作用した場合に、継手鋼管50に降伏が生じないように継手鋼管50の外径の上限値を設定するとともに、継手鋼管50と充填材との付着切れが起こらないように継手鋼管50の外径の下限値を設定する方法が記載されている。   Further, in Patent Document 1, as shown in FIG. 15, a protrusion 51 is provided only on the inner surface of the joint steel pipe 50, and when a predetermined value of shearing force acts on the fitting portion 52, yielding is generated in the joint steel pipe 50. A method is described in which the upper limit value of the outer diameter of the joint steel pipe 50 is set so as not to occur, and the lower limit value of the outer diameter of the joint steel pipe 50 is set so that the adhesion of the joint steel pipe 50 and the filler does not occur. ing.

さらに、特許文献2には、継手鋼管における鋼管矢板本管への取り付け部からスリット位置まで円周方向に延びる2つの円弧のうちの円弧長が長い側の継手鋼管部分に対し、その内面から鋼管矢板本管側に突出するようにアングル材を溶接にて取り付けて、嵌合時のB空間の断面方向の断面積を確保することにより、排土作業の施工性を向上させ、所定のせん断耐力を確保する方法が記載されている。
鋼管矢板基礎設計施工便覧、社団法人日本道路協会 鋼管矢板基礎における高耐力継手の実験的研究、土木学会第49回年次学術講演会、平成6年9月 特開2000−355931 特開2000−355932
Further, Patent Document 2 discloses a steel pipe from the inner surface to a joint steel pipe portion having a long arc length of two arcs extending in the circumferential direction from the attachment portion of the joint steel pipe to the steel sheet pile main pipe to the slit position. The angle material is attached by welding so as to protrude to the sheet pile main side, and the cross-sectional area in the cross-sectional direction of the B space at the time of fitting is improved, thereby improving the workability of the soil removal work and the predetermined shear strength A method of ensuring the above is described.
Steel pipe sheet pile basic design and construction manual, Japan Road Association Experimental research on high strength joints for steel pipe sheet pile foundations, 49th Annual Scientific Lecture, Japan Society of Civil Engineers, September 1994 JP 2000-355931 A JP 2000-355932 A

非特許文献2及び特許文献1に記載されている継手鋼管の内面にのみに突起を設ける方法においては、図15に示すように、嵌合部52のB空間の外周部が突起で覆われているので、このB空間でせん断力に抵抗可能である。しかしながら、嵌合部のB空間で有効にせん断力に抵抗するには、B空間内を洗浄して土砂を確実に除去し、モルタル充填を密実に行う必要があるが、3空間のうち、B空間が最も小さいために土砂の除去、洗浄及びモルタル充填の作業性が悪く、モルタル充填を密実に行うことが困難であるという問題点があった。   In the method of providing the protrusion only on the inner surface of the joint steel pipe described in Non-Patent Document 2 and Patent Document 1, as shown in FIG. 15, the outer peripheral portion of the B space of the fitting portion 52 is covered with the protrusion. Therefore, it is possible to resist the shearing force in this B space. However, in order to effectively resist the shearing force in the B space of the fitting portion, it is necessary to clean the inside of the B space to surely remove the earth and sand and to perform the mortar filling densely. Since the space is the smallest, there is a problem that the workability of removing sand, washing and mortar filling is poor, and it is difficult to perform mortar filling densely.

また、非特許文献2に記載されている継手鋼管の外径を大きくする方法は、継手鋼管を大きくすると加工費用が高価となるばかりでなく、鋼管矢板打設時の抵抗が大きくなり、施工性が悪いという問題点があった。   Moreover, the method of enlarging the outer diameter of the joint steel pipe described in Non-Patent Document 2 not only increases the processing cost when the joint steel pipe is enlarged, but also increases the resistance when placing the steel pipe sheet pile, and the workability is increased. There was a problem of being bad.

さらに、特許文献2に記載されている継手鋼管内にアングル材を溶接にて取り付ける方法は、狭隘な空間内にアングル材を固定する加工作業が非常に困難であるため、加工費が高価となるという問題点があった。また、アングルが鋼管矢板打設時の抵抗となり、かつ、空間B内の土砂の除去及び洗浄時はアングル材が土砂洗浄用配管の挿入を阻害するため、施工性が悪いという問題点があった。   Furthermore, the method of attaching the angle material to the joint steel pipe described in Patent Document 2 by welding is very difficult to fix the angle material in a narrow space, so the processing cost is expensive. There was a problem. In addition, the angle becomes a resistance when the steel pipe sheet pile is placed, and the angle material obstructs the insertion of the earth and sand washing pipe when removing and washing the earth and sand in the space B. .

そこで、本発明は、上記の問題点を鑑みてなされたものであり、鋼管矢板基礎の全体曲げ剛性を高めるべく嵌合部の施工の作業性を向上させ、もって嵌合部のせん断耐力を増加させることが可能な鋼管矢板及び鋼管矢板の連結構造を提供することを目的とする。   Therefore, the present invention has been made in view of the above-described problems, and improves the workability of the fitting portion in order to increase the overall bending rigidity of the steel pipe sheet pile foundation, thereby increasing the shear strength of the fitting portion. It aims at providing the connection structure of the steel pipe sheet pile which can be made, and a steel pipe sheet pile.

前記目的を達成するため、本発明の鋼管矢板の連結構造は、鋼管矢板本管の外周面に、長手方向に延びるスリットを有する継手鋼管が一体に固定された鋼管矢板を用い、隣接する鋼管矢板の対向する一対の前記継手鋼管を嵌合して、該嵌合部に流動性固化材を充填することにより鋼管矢板を連結する連結構造において、一方の前記継手鋼管は外周面に突起部を有し、他方の前記継手鋼管は内周面に突起部を有することを特徴とする(第1の発明)。   In order to achieve the above object, the steel pipe sheet pile connection structure of the present invention uses a steel pipe sheet pile in which a joint steel pipe having a slit extending in the longitudinal direction is integrally fixed to the outer peripheral surface of the steel pipe sheet pile main pipe, and adjacent steel pipe sheet piles. In the connection structure in which the steel pipe sheet pile is connected by fitting a pair of the above-mentioned joint steel pipes and filling the fitting portion with a fluidized solidifying material, one of the joint steel pipes has a protrusion on the outer peripheral surface. The other joint steel pipe has a protrusion on the inner peripheral surface (first invention).

第2の発明の鋼管矢板の連結構造は、第1の発明において、前記一方の継手鋼管は内周面にも突起部を有することを特徴とする。   The connection structure for steel pipe sheet piles according to the second invention is characterized in that, in the first invention, the one joint steel pipe has a protrusion on the inner peripheral surface.

第3の発明の鋼管矢板第1又は第2の発明において、前記他方の継手鋼管は外周面にも突起部を有することを特徴とする。   In the first and second inventions of the steel pipe sheet pile according to the third invention, the other joint steel pipe has a protrusion on the outer peripheral surface.

第4の発明の鋼管矢板は、鋼管矢板本管の外周面に、長手方向に延びるスリットを有する継手鋼管が一体に固定された鋼管矢板において、少なくとも1つの前記継手鋼管は外周面に突起部を有することを特徴とする。   A steel pipe sheet pile of a fourth invention is a steel pipe sheet pile in which a joint steel pipe having a slit extending in the longitudinal direction is integrally fixed to the outer peripheral surface of the steel pipe sheet pile main pipe, and at least one of the joint steel pipes has a protrusion on the outer peripheral surface. It is characterized by having.

第5の発明は、第4の発明において、外周面に突起部を有しない前記継手鋼管は内周面に突起部を有することを特徴とする。   The fifth invention is characterized in that, in the fourth invention, the joint steel pipe having no protrusion on the outer peripheral surface has a protrusion on the inner peripheral surface.

本発明によると、継手鋼管内の土砂の除去、洗浄及びモルタルの充填の作業性を飛躍的に向上することが可能となり、高いせん断耐力を安定して発揮させることができる。   According to the present invention, it is possible to dramatically improve the workability of removing and washing earth and sand in a joint steel pipe and filling mortar, and a high shear strength can be stably exhibited.

また、継手鋼管内に、アングル等の継手間隔保持材を設ける必要が無く、継手間隔保持材を設けることによる継手加工費の増加を防止することが可能となる。   Further, there is no need to provide a joint spacing member such as an angle in the joint steel pipe, and it is possible to prevent an increase in joint processing costs due to the provision of the joint spacing member.

したがって、従来から使用されている継手鋼管の外径でも充分なせん断耐力を得ることができるために、継手鋼管の外径を大きくする必要が無く、コスト増加を防止し、かつ打設時の地盤抵抗の増加を防止することが可能となる。   Therefore, since sufficient shear strength can be obtained even with the outer diameter of a conventionally used joint steel pipe, there is no need to increase the outer diameter of the joint steel pipe, preventing an increase in cost and the ground at the time of placing. It is possible to prevent an increase in resistance.

さらに、3つの空間A、B、Cのうち、2以上の空間の外周面に突起を有するように継手鋼管の内面又は外面に突起を設ける連結構造とすることができ、従来の内面のみに突起を設けた継手鋼管を有する鋼管矢板の連結構造よりも大幅にせん断耐力を増加させる鋼管矢板の連結構造とすることが可能となる。   Furthermore, it can be set as the connection structure which provides a processus | protrusion in the inner surface or outer surface of a joint steel pipe so that it may have a processus | protrusion in the outer peripheral surface of two or more space among three space A, B, and C, and it has a process only in the conventional inner surface It becomes possible to make the connection structure of the steel pipe sheet pile which increases a shear strength significantly compared with the connection structure of the steel pipe sheet pile which has the joint steel pipe which provided.

つまり、本発明による鋼管矢板の連結構造を用いることにより、鋼管矢板基礎の曲げ剛性が増加するために鋼管矢板基礎を小型化することが可能となり、鋼管矢板基礎の建設費を削減することが可能となる。   In other words, by using the steel pipe sheet pile connection structure according to the present invention, the bending rigidity of the steel pipe sheet pile foundation can be increased, so that the steel pipe sheet pile foundation can be downsized and the construction cost of the steel pipe sheet pile foundation can be reduced. It becomes.

本発明は、鋼管矢板基礎の全体剛性を高める連結構造の形成を目的とし、嵌合部のせん断力を増加させる鋼管矢板及び鋼管矢板の連結構造に関するものである。以下、この発明の好ましい実施形態について図面を用いて詳細に説明する。   The present invention relates to a steel pipe sheet pile and a steel pipe sheet pile connection structure for the purpose of forming a connection structure that increases the overall rigidity of the steel pipe sheet pile foundation, and increasing the shearing force of the fitting portion. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

図1は、本発明の第一実施形態に係る鋼管矢板を示す図である。図1に示すように、鋼管矢板1は、鋼管矢板本管2の外周面に、長手方向に延びるスリットSを有する一対の継手鋼管3が一体に固定されており、一方の継手鋼管3aの外周面に突起4が設けられ、他方の継手鋼管3bの内周面にも突起4が配設されている。本実施形態においては、例えば、継手鋼管3の径は165.2mm、突起部を除く板厚は11mmである。   FIG. 1 is a view showing a steel pipe sheet pile according to the first embodiment of the present invention. As shown in FIG. 1, a steel pipe sheet pile 1 has a pair of joint steel pipes 3 having slits S extending in the longitudinal direction integrally fixed to the outer peripheral surface of a steel pipe sheet pile main pipe 2, and the outer periphery of one joint steel pipe 3a. The protrusion 4 is provided on the surface, and the protrusion 4 is also provided on the inner peripheral surface of the other joint steel pipe 3b. In the present embodiment, for example, the diameter of the joint steel pipe 3 is 165.2 mm, and the plate thickness excluding the protrusions is 11 mm.

また、突起4の形状は、例えば、高さ約1mm、幅約5mmとし、複数個の突起4がチェッカー状に継手鋼管の外周面又は内周面に配設されている。突起4の形状は、高さ0.5mm〜2mm程度、幅3mm〜10mm程度であればよい。なお、突起4は格子状、螺旋状に配設してもよい。なお、突起形状及び配設方法は、これに限定されるものではなく、例えば、継手鋼管3の管軸方向に垂直なリング形状の突起を複数個長手方向に等間隔に配設してもよい。   The shape of the protrusion 4 is, for example, about 1 mm in height and about 5 mm in width, and a plurality of protrusions 4 are arranged in a checker shape on the outer peripheral surface or inner peripheral surface of the joint steel pipe. The shape of the protrusion 4 may be about 0.5 mm to 2 mm in height and about 3 mm to 10 mm in width. The protrusions 4 may be arranged in a lattice shape or a spiral shape. The protrusion shape and the arrangement method are not limited to this, and for example, a plurality of ring-shaped protrusions perpendicular to the tube axis direction of the joint steel pipe 3 may be arranged at equal intervals in the longitudinal direction. .

内面に突起を有する継手鋼管は、突起模様を形成する圧延ロールを用いて熱間圧延により突起付き鋼板コイルを圧延し、突起部が内側になるよう造管成形した後、溶接により製造する。また、外面に突起を有する鋼管は、同じ突起付き鋼板コイルを突起部が外側になるよう造管成形した後、溶接により製造する。このように、突起を有する継手鋼管は一般的な継手鋼管と同じ製造方法にて製造できるために、製造コストが特別に増加することは無い。   A joint steel pipe having protrusions on its inner surface is manufactured by welding after rolling a steel plate coil with protrusions by hot rolling using a rolling roll that forms a protrusion pattern and forming the protrusions on the inside. Moreover, the steel pipe which has a processus | protrusion on an outer surface is manufactured by welding after forming the same steel plate coil with a processus | protrusion so that a processus | protrusion part may become an outer side. Thus, since the joint steel pipe which has a protrusion can be manufactured with the same manufacturing method as a general joint steel pipe, manufacturing cost does not increase specially.

図2は、本発明の第一実施形態に係る鋼管矢板の連結構造を示す図である。図2に示すように、本発明の連結構造5は、隣接する鋼管矢板1の対向する一対の継手鋼管3a、3bを嵌合し、この嵌合部6に流動性固化材を充填して連結する鋼管矢板の連結構造であって、一方の継手鋼管3aは外周面に突起部を有し、他方の継手鋼管3bは内周面に突起部を有する。   FIG. 2 is a view showing a connecting structure of steel pipe sheet piles according to the first embodiment of the present invention. As shown in FIG. 2, the connection structure 5 of the present invention fits a pair of jointed steel pipes 3 a and 3 b facing each other adjacent steel pipe sheet piles 1, and fills the fitting portion 6 with a fluidized solidifying material and connects them. This is a connecting structure of steel pipe sheet piles, in which one joint steel pipe 3a has a protrusion on the outer peripheral surface, and the other joint steel pipe 3b has a protrusion on the inner peripheral surface.

流動性固化材は止水性能を有するものであればセメントミルク、モルタル、ソイルセメント、コンクリート等のいずれかを選択して使用することが可能であるが、本実施形態においては、モルタルを用いる。   As long as the fluidized solidifying material has water-stopping performance, any of cement milk, mortar, soil cement, concrete and the like can be selected and used. In the present embodiment, mortar is used.

この一対の継手鋼管3a、3bにて形成され、モルタルが充填されている嵌合部6は概略A、B、Cの3つの空間に分割でき、空間Cの外周部は一方の継手鋼管3aの突起部を有する外周面と他方の継手鋼管3bの突起部を有する内周面とに囲まれているために、空間A、B、Cのうち、断面積が大きく、作業性が良好な空間Cがせん断耐力を有することとなる。このように、本実施形態では、せん断耐力を発揮する空間Cにモルタルを密実に充填して、充分なせん断耐力を得ることができる。   The fitting portion 6 formed of the pair of joint steel pipes 3a and 3b and filled with mortar can be divided into three spaces A, B and C, and the outer peripheral portion of the space C is the one of the joint steel pipes 3a. Since the outer peripheral surface having the protruding portion and the inner peripheral surface having the protruding portion of the other joint steel pipe 3b are surrounded by the space A, the space C having a large cross-sectional area and good workability. Will have shear strength. Thus, in this embodiment, the space C which exhibits shear strength can be filled with mortar densely, and sufficient shear strength can be obtained.

さらに言えば、空間Cのみがせん断耐力を有するので、空間C内の洗浄及びモルタル充填を実施すれば、空間A、B内の洗浄及びモルタル充填を省略しても、充分なせん断耐力を得ることができる。   Furthermore, since only space C has shear strength, if cleaning and mortar filling in space C are performed, sufficient shear strength can be obtained even if cleaning and mortar filling in spaces A and B are omitted. Can do.

本実施形態では、非特許文献1に規定されている通り、空間A、B、Cの鋼管矢板連結方向の長さLa、Lb、Lcはすべて継手鋼管の径Dの0.5倍、嵌合部6の鋼管矢板連結方向の長さLは継手鋼管の径Dの1.5倍となるように配設している。したがって、空間A、B、Cの水平断面積はそれぞれ約8900mm、約6300mm、約8900mmとなり、空間Cの水平断面積は空間Bの水平断面積よりも広いために、空間C内の洗浄及びモルタル充填の作業性が向上する。 In this embodiment, as defined in Non-Patent Document 1, the lengths La, Lb, and Lc of the space A, B, and C in the steel pipe sheet pile connection direction are all 0.5 times the diameter D of the joint steel pipe and fitted. The length L in the steel pipe sheet pile connection direction of the portion 6 is arranged to be 1.5 times the diameter D of the joint steel pipe. Accordingly, the space A, B, respectively about 8900Mm 2 is horizontal cross-sectional area of C, about 6300Mm 2, about 8900Mm 2 becomes, for wider than the horizontal cross-sectional area of the horizontal cross-sectional area of the space B of the space C, in the space C Workability of cleaning and mortar filling is improved.

さらに、図3に示すように、鋼管矢板1を打設する際に、地盤の硬さの違いなどによって鋼管矢板先端部分が垂直に打設されずに鋼管矢板1の継手間隔が広がる方向に打設されることがある。この影響により空間Bは狭くなるが、空間Cが広がることにより、洗浄及びモルタル充填の作業性が向上する。   Furthermore, as shown in FIG. 3, when the steel pipe sheet pile 1 is placed, the tip end portion of the steel pipe sheet pile is not placed vertically due to a difference in the hardness of the ground, etc., so that the joint interval of the steel pipe sheet pile 1 is increased. May be established. Although space B becomes narrow by this influence, workability | operativity of washing | cleaning and mortar filling improves by expanding space C.

このように、本実施形態では、せん断耐力を発揮する空間Cの洗浄及びモルタル充填の作業性が良好となるため、モルタルを密実に充填して、充分なせん断耐力を安定して発揮することができる。   As described above, in this embodiment, the workability of the cleaning and mortar filling of the space C exhibiting the shear strength is improved, so that the mortar can be filled densely and the sufficient shear strength can be stably exhibited. it can.

図4は、本発明の第一実施形態に係る他の鋼管矢板の連結構造を示す図である。図2に示す鋼管矢板の連結構造では、一方の継手鋼管3aは外周面に突起部を有し、他方の継手鋼管3bは内周面に突起部を有していたが、図4に示すように、外周面に突起部を有する一対の継手鋼管7を備える鋼管矢板8と、内周面に突起部を有する一対の継手鋼管9を備える鋼管矢板10とを連結する構成でもよい。かかる構成でも、隣接する鋼管矢板8、10の対向する一対の継手鋼管7、9の嵌合部6は、一方の継手鋼管7が外周面に突起部を有し、他方の継手鋼管9は内周面に突起部を有する連結構造5となる。   FIG. 4 is a view showing another steel pipe sheet pile connection structure according to the first embodiment of the present invention. In the steel pipe sheet pile connection structure shown in FIG. 2, one joint steel pipe 3a has a protrusion on the outer peripheral surface, and the other joint steel pipe 3b has a protrusion on the inner peripheral surface, as shown in FIG. Moreover, the structure which connects the steel pipe sheet pile 8 provided with a pair of joint steel pipe 7 which has a protrusion part in an outer peripheral surface and the steel pipe sheet pile 10 provided with a pair of joint steel pipe 9 which has a protrusion part in an inner peripheral surface may be sufficient. Even in such a configuration, the fitting part 6 of the pair of joint steel pipes 7 and 9 facing each other in the adjacent steel pipe sheet piles 8 and 10 has one joint steel pipe 7 having a protrusion on the outer peripheral surface, and the other joint steel pipe 9 has an inner side. It becomes the connection structure 5 which has a projection part in a surrounding surface.

以下、本発明の他の実施形態について説明するが、各実施形態において、第一実施形態と対応する部分には同一の符号を付して、説明を省略するものとする。   Hereinafter, although other embodiment of this invention is described, in each embodiment, the same code | symbol shall be attached | subjected to the part corresponding to 1st embodiment, and description shall be abbreviate | omitted.

図5は、本発明の第二実施形態に係る鋼管矢板を示す図である。図5に示すように、鋼管矢板11は、鋼管矢板本管2の外周面に、長手方向に延びるスリットSを有する一対の継手鋼管12a、12bが一体に固定されており、一方の継手鋼管12aの外周面に突起4が設けられ、他方の継手鋼管12bの外周面及び内周面の両面に突起4が設けられている。   FIG. 5 is a view showing a steel pipe sheet pile according to the second embodiment of the present invention. As shown in FIG. 5, the steel pipe sheet pile 11 is integrally fixed to the outer peripheral surface of the steel pipe sheet pile main pipe 2 with a pair of joint steel pipes 12a and 12b having slits S extending in the longitudinal direction. The protrusion 4 is provided on the outer peripheral surface of the other, and the protrusion 4 is provided on both the outer peripheral surface and the inner peripheral surface of the other joint steel pipe 12b.

両面に突起を有する継手鋼管は、熱間圧延時に上下圧延ロールに突起模様を形成する圧延ロールを用いて両面突起付き鋼板コイルを圧延して造管成形し、溶接により製造する。このように、両面に突起を有する継手鋼管は一般的な継手鋼管と同じ製造方法にて製造できるために、製造コストが特別に増加することは無い。   A joint steel pipe having projections on both sides is manufactured by rolling a steel plate coil with double-sided projections using a rolling roll that forms a projection pattern on the upper and lower rolling rolls during hot rolling, and forming the pipe by welding. Thus, since the joint steel pipe which has a processus | protrusion on both surfaces can be manufactured with the same manufacturing method as a general joint steel pipe, manufacturing cost does not increase specially.

図6は、本発明の第二実施形態に係る鋼管矢板の連結構造を示す図である。図6に示すように、本発明の連結構造13は、隣接する鋼管矢板の対向する一対の継手鋼管12a、12bを嵌合し、この嵌合部14にモルタル等の充填材を充填して連結する鋼管矢板の連結構造であって、一方の継手鋼管12aが外周面に突起部を有し、他方の継手鋼管12bは外周面及び内周面に突起部を有する。   FIG. 6 is a view showing a connecting structure of steel pipe sheet piles according to the second embodiment of the present invention. As shown in FIG. 6, the connection structure 13 of the present invention fits a pair of joint steel pipes 12 a and 12 b facing each other adjacent steel pipe sheet piles, and connects the fitting portion 14 with a filler such as mortar. This is a steel pipe sheet pile connection structure in which one joint steel pipe 12a has a protrusion on the outer peripheral surface, and the other joint steel pipe 12b has a protrusion on the outer peripheral surface and the inner peripheral surface.

この一対の継手鋼管12a、12bにて形成される空間Cの外周部は一方の継手鋼管12aの突起部を有する外周面と他方の継手鋼管12bの突起部を有する内周面とに囲まれているために、空間A、B、Cのうち、断面積が大きく、作業性が良好な空間Cがせん断耐力を有することとなる。このように、本実施形態では、せん断耐力を発揮する空間Cにモルタルを密実に充填して、充分なせん断耐力を得ることができる。   An outer peripheral portion of the space C formed by the pair of joint steel pipes 12a and 12b is surrounded by an outer peripheral surface having a protrusion portion of one joint steel pipe 12a and an inner peripheral surface having a protrusion portion of the other joint steel pipe 12b. Therefore, among the spaces A, B, and C, the space C having a large cross-sectional area and good workability has a shear strength. Thus, in this embodiment, the space C which exhibits shear strength can be filled with mortar densely, and sufficient shear strength can be obtained.

さらに言えば、空間Cのみがせん断耐力を有するので、空間C内の洗浄及びモルタル充填を実施すれば、空間A、B内の洗浄及びモルタル充填を省略しても、充分なせん断耐力を得ることができる。   Furthermore, since only space C has shear strength, if cleaning and mortar filling in space C are performed, sufficient shear strength can be obtained even if cleaning and mortar filling in spaces A and B are omitted. Can do.

図7は、本発明の第二実施形態に係る他の鋼管矢板の連結構造を示す図である。図6に示す鋼管矢板の連結構造では、一方の継手鋼管12aが外周面に突起部を有し、他方の継手鋼管12bは外周面及び内周面に突起部を有していたが、図7に示すように、外周面に突起部を有する一対の継手鋼管15を備える鋼管矢板16と、外周面及び内周面の両面に突起部を有する一対の継手鋼管17を備える鋼管矢板18とを連結する構成でもよい。かかる構成でも、隣接する鋼管矢板16、18の対向する一対の継手鋼管15、17の嵌合部14は、一方の継手鋼管15が外周面に突起部を有し、他方の継手鋼管17は外周面及び内周面の両面に突起部を有する連結構造13となる。   FIG. 7 is a view showing another steel pipe sheet pile connection structure according to the second embodiment of the present invention. In the steel pipe sheet pile connection structure shown in FIG. 6, one joint steel pipe 12a has a protrusion on the outer peripheral surface, and the other joint steel pipe 12b has a protrusion on the outer peripheral surface and the inner peripheral surface. As shown, the steel pipe sheet pile 16 provided with a pair of joint steel pipes 15 having protrusions on the outer peripheral surface and the steel pipe sheet pile 18 provided with a pair of joint steel pipes 17 having protrusions on both the outer peripheral surface and the inner peripheral surface are connected. The structure to do may be sufficient. Even in such a configuration, in the fitting portion 14 of the pair of joint steel pipes 15 and 17 facing each other adjacent steel pipe sheet piles 16 and 18, one joint steel pipe 15 has a protrusion on the outer peripheral surface, and the other joint steel pipe 17 has an outer periphery. It becomes the connection structure 13 which has a projection part in both surfaces of a surface and an internal peripheral surface.

図8は、本発明の第三実施形態に係る鋼管矢板を示す図である。図8に示すように、鋼管矢板20は、鋼管矢板本管2の外周面に、長手方向に延びるスリットSを有する一対の継手鋼管21a、21bが一体に固定されており、一方の継手鋼管21aが内周面及び外周面の両面に突起4が設けられ、他方の継手鋼管21bは内周面に突起4が設けられている。   FIG. 8 is a view showing a steel pipe sheet pile according to the third embodiment of the present invention. As shown in FIG. 8, the steel pipe sheet pile 20 is integrally fixed to the outer peripheral surface of the steel pipe sheet pile main pipe 2 with a pair of joint steel pipes 21a and 21b having slits S extending in the longitudinal direction. The protrusion 4 is provided on both the inner peripheral surface and the outer peripheral surface, and the other joint steel pipe 21b is provided with the protrusion 4 on the inner peripheral surface.

図9は、本発明の第三実施形態に係る鋼管矢板の連結構造を示す図である。図9に示すように、本発明の連結構造22は、隣接する鋼管矢板20の対向する一対の継手鋼管21a、21bを嵌合し、この嵌合部23にモルタル等の充填材を充填して連結する鋼管矢板の連結構造であって、一方の継手鋼管21aが外周面及び内周面の両面に突起部を有し、他方の継手鋼管21bは内周面に突起部を有する。   FIG. 9 is a view showing a steel pipe sheet pile connection structure according to the third embodiment of the present invention. As shown in FIG. 9, the connection structure 22 of the present invention fits a pair of joint steel pipes 21 a and 21 b facing each other adjacent steel pipe sheet piles 20, and fills the fitting portion 23 with a filler such as mortar. It is the connection structure of the steel pipe sheet pile to connect, Comprising: One joint steel pipe 21a has a protrusion part in both the outer peripheral surface and an internal peripheral surface, and the other joint steel pipe 21b has a protrusion part in an internal peripheral surface.

この一対の継手鋼管21a、21bにて形成される空間Cの外周部は一方の継手鋼管21aの突起部を有する外周面と他方の継手鋼管21bの突起部を有する内周面とに囲まれているために、空間A、B、Cのうち、断面積が大きく、作業性が良好な空間Cがせん断耐力を有することとなる。このように、本実施形態では、せん断耐力を発揮する空間Cにモルタルを密実に充填して、充分なせん断耐力を得ることができる。   An outer peripheral portion of the space C formed by the pair of joint steel pipes 21a and 21b is surrounded by an outer peripheral surface having a protrusion portion of one joint steel pipe 21a and an inner peripheral surface having a protrusion portion of the other joint steel pipe 21b. Therefore, among the spaces A, B, and C, the space C having a large cross-sectional area and good workability has a shear strength. Thus, in this embodiment, the space C which exhibits shear strength can be filled with mortar densely, and sufficient shear strength can be obtained.

さらに、空間Bの外周部は、一方の継手鋼管の突起部を有する内周面と他方の継手鋼管の突起部を有する内周面とに囲まれているために、空間Bもせん断力を有することとなる。したがって、従来の内周面のみに突起を有する継手鋼管のように、空間Bのみがせん断耐力を有する場合よりも、約2倍のせん断耐力が期待できる。   Furthermore, since the outer peripheral part of the space B is surrounded by the inner peripheral surface having the protrusions of one joint steel pipe and the inner peripheral surface having the protrusions of the other joint steel pipe, the space B also has a shearing force. It will be. Therefore, about twice as much shear strength can be expected as compared with the case where only the space B has shear strength, like a conventional jointed steel pipe having protrusions only on the inner peripheral surface.

さらに言えば、空間B及びCのみがせん断耐力を有するので、空間B及びC内の洗浄及びモルタル充填を実施すれば、空間A内の洗浄及びモルタル充填を省略しても、従来の内面のみに突起を有する継手鋼管の場合よりも、約2倍のせん断耐力が期待できる。   Furthermore, since only the spaces B and C have shear strength, if the cleaning and mortar filling in the spaces B and C are performed, the cleaning and the mortar filling in the space A can be omitted only on the conventional inner surface. The shear strength can be expected to be about twice that of a jointed steel pipe having a protrusion.

図10は、本発明の第三実施形態に係る他の鋼管矢板の連結構造を示す図である。図9に示す鋼管矢板の連結構造では、一方の継手鋼管21aが外周面及び内周面の両面に突起部を有し、他方の継手鋼管21bは内周面に突起部を有していたが、図10に示すように、外周面及び内周面の両面に突起部を有する一対の継手鋼管24を備える鋼管矢板25と、内周面に突起部を有する一対の継手鋼管26を備える鋼管矢板27とを連結する構成でもよい。かかる構成でも、隣接する鋼管矢板25、27の対向する一対の継手鋼管24、26の嵌合部23は、一方の継手鋼管24が外周面及び内周面の両面に突起部を有し、他方の継手鋼管26は内周面に突起部を有する連結構造22となる。   FIG. 10 is a view showing another steel pipe sheet pile connection structure according to the third embodiment of the present invention. In the steel pipe sheet pile connection structure shown in FIG. 9, one joint steel pipe 21a has protrusions on both the outer peripheral surface and the inner peripheral surface, and the other joint steel pipe 21b has protrusions on the inner peripheral surface. As shown in FIG. 10, a steel pipe sheet pile including a steel pipe sheet pile 25 having a pair of joint steel pipes 24 having protrusions on both the outer peripheral surface and the inner peripheral surface, and a pair of joint steel pipes 26 having protrusions on the inner peripheral surface. 27 may be connected. Even in such a configuration, the fitting part 23 of the pair of joint steel pipes 24 and 26 facing each other of the adjacent steel pipe sheet piles 25 and 27 has one joint steel pipe 24 having protrusions on both the outer peripheral surface and the inner peripheral surface, The joint steel pipe 26 becomes a connection structure 22 having a protrusion on the inner peripheral surface.

図11は、本発明の第四実施形態に係る鋼管矢板を示す図である。図11に示すように、鋼管矢板30は、鋼管矢板本管2の外周面に、長手方向に延びるスリットSを有する一対の継手鋼管31a、31bが一体に固定されており、一方の継手鋼管31aは外周面及び内周面の両面に突起4が設けられ、他方の継手鋼管31bも外周面及び内周面の両面に突起4が設けられている。   FIG. 11 is a view showing a steel pipe sheet pile according to the fourth embodiment of the present invention. As shown in FIG. 11, the steel pipe sheet pile 30 is integrally fixed to the outer peripheral surface of the steel pipe sheet pile main pipe 2 with a pair of joint steel pipes 31a and 31b having slits S extending in the longitudinal direction. Are provided with protrusions 4 on both the outer peripheral surface and the inner peripheral surface, and the other joint steel pipe 31b is also provided with protrusions 4 on both the outer peripheral surface and the inner peripheral surface.

図12は、本発明の第四実施形態に係る鋼管矢板の連結構造を示す図である。図12に示すように、本発明の連結構造32は、隣接する鋼管矢板30の対向する一対の継手鋼管31a、31bを嵌合し、この嵌合部33にモルタル等の充填材を充填して連結する鋼管矢板の連結構造であって、一方の継手鋼管31aは外周面及び内周面の両面に突起部を有し、他方の継手鋼管31bも外周面及び内周面の両面に突起部を有する。   FIG. 12 is a view showing a connecting structure of steel pipe sheet piles according to the fourth embodiment of the present invention. As shown in FIG. 12, the connection structure 32 of the present invention fits a pair of joint steel pipes 31 a and 31 b facing each other adjacent steel pipe sheet piles 30, and fills the fitting portion 33 with a filler such as mortar. It is the connection structure of the steel pipe sheet pile to connect, Comprising: One joint steel pipe 31a has a projection part on both surfaces of an outer peripheral surface and an internal peripheral surface, and the other joint steel pipe 31b also has a projection part on both surfaces of an outer peripheral surface and an internal peripheral surface. Have.

この一対の継手鋼管31a、31bにて形成される空間Aの外周部は一方の継手鋼管31aの突起部を有する内周面と他方の継手鋼管31bの突起部を有する外周面とに囲まれているために、空間A、B、Cのうち、断面積が大きく、作業性が良好な空間Aがせん断耐力を有することとなる。   The outer peripheral portion of the space A formed by the pair of joint steel pipes 31a and 31b is surrounded by an inner peripheral surface having a protrusion portion of one joint steel pipe 31a and an outer peripheral surface having a protrusion portion of the other joint steel pipe 31b. Therefore, among the spaces A, B, and C, the space A having a large cross-sectional area and good workability has shear strength.

また、空間Cの外周部は一方の継手鋼管31aの突起部を有する外周面と他方の継手鋼管31bの突起部を有する内周面とに囲まれているために、断面積が大きく、作業性が良好な空間Cもせん断耐力を有することとなる。このように、本実施形態では、せん断耐力を発揮する空間A及びCにモルタルを密実に充填して、充分なせん断耐力を得ることができる。   In addition, since the outer peripheral portion of the space C is surrounded by the outer peripheral surface having the protruding portion of one joint steel pipe 31a and the inner peripheral surface having the protruding portion of the other joint steel pipe 31b, the cross-sectional area is large and workability is improved. However, the space C with good shear strength also has shear strength. Thus, in the present embodiment, sufficient shear strength can be obtained by densely filling the mortars in the spaces A and C exhibiting the shear strength.

また、空間Bの外周部は一方の継手鋼管31aの突起部を有する内周面と他方の継手鋼管31bの突起部を有する内周面とに囲まれているために、空間A、B、Cのうち、空間Bもせん断耐力を有することとなる。   Moreover, since the outer peripheral part of the space B is surrounded by the inner peripheral surface having the protrusion of one joint steel pipe 31a and the inner peripheral surface having the protrusion of the other joint steel pipe 31b, the spaces A, B, C Of these, the space B also has shear strength.

したがって、本実施形態においては、空間A、B及びCがせん断耐力を有することから、従来の内周面のみに突起を有する継手鋼管のように、空間Bのみがせん断耐力を有する場合よりも、約3倍のせん断耐力が期待できる。   Therefore, in this embodiment, since the spaces A, B, and C have shear strength, compared to the case where only the space B has shear strength, like a conventional jointed steel pipe having a protrusion only on the inner peripheral surface, A shear strength of about 3 times can be expected.

なお、上記すべての実施形態において、一対の鋼管継手を鋼管矢板本管の外周に互いに対向する位置に取り付けるという鋼管矢板を直線状に連結する場合の鋼管矢板について説明したが、これに限定されるものではなく、例えば、円形、小判形、矩形のように外周に円弧部を有する鋼管矢板基礎に鋼管矢板を配設する場合においては、鋼管矢板を円弧の形状となるように連結するために、鋼管継手を鋼管矢板本管の外周に円弧の形状に沿うように取り付ければよい。   In all the embodiments described above, the steel pipe sheet pile in the case of connecting the steel pipe sheet piles in a straight line to attach the pair of steel pipe joints to the outer periphery of the steel pipe sheet pile main pipe has been described, but the present invention is limited to this. For example, in the case where a steel pipe sheet pile is disposed on a steel pipe sheet pile foundation having an arc portion on the outer periphery like a circle, an oval shape, a rectangle, etc., in order to connect the steel pipe sheet pile so as to have an arc shape, What is necessary is just to attach a steel pipe joint so that the outer periphery of a steel pipe sheet pile main pipe may follow the shape of a circular arc.

また、図13は、本発明の第四実施形態に係る鋼管矢板の連結構造を有する鋼管矢板基礎全体を示す図である。本実施形態では、鋼管矢板基礎101は隔壁102を備えており、図13の拡大図に示すように、交差部103を有する。交差部103においては、ある鋼管矢板本管を中心に鋼管矢板が放射状となるように連結するために、ある鋼管矢板本管に接続される鋼管矢板と同数、かつ、接続される位置となるように継手鋼管を鋼管矢板本管に取り付ければよい。したがって、鋼管矢板基礎に用いられる鋼管矢板の連結構造は、一方の継手鋼管が外周面に突起部を有し、他方の継手鋼管が内周面に突起部を有する連結構造、又は、一方の継手鋼管が外周面及び内周面に突起部を有し、他方の継手鋼管が内周面に突起部を有する連結構造、又は、一方の継手鋼管が外周面及び内周面に突起部を有し、他方の継手鋼管が外周面及び内周面に突起部を有する連結構造のいずれかであればよい。   Moreover, FIG. 13 is a figure which shows the whole steel pipe sheet pile foundation which has the connection structure of the steel pipe sheet pile concerning 4th embodiment of this invention. In this embodiment, the steel pipe sheet pile foundation 101 includes a partition wall 102 and has an intersection 103 as shown in the enlarged view of FIG. At the intersection 103, in order to connect the steel pipe sheet piles in a radial manner around a steel pipe sheet pile main pipe, the number of steel pipe sheet piles connected to a certain steel pipe sheet pile main pipe is the same as the connected position. The joint steel pipe may be attached to the steel pipe sheet pile main pipe. Therefore, the connection structure of the steel pipe sheet pile used for the steel pipe sheet pile foundation is a connection structure in which one joint steel pipe has a protrusion on the outer peripheral surface and the other joint steel pipe has a protrusion on the inner peripheral surface, or one joint A steel pipe has protrusions on the outer peripheral surface and inner peripheral surface, and the other joint steel pipe has a protrusion on the inner peripheral surface, or one joint steel pipe has protrusions on the outer peripheral surface and inner peripheral surface. And the other joint steel pipe should just be either of the connection structures which have a projection part in an outer peripheral surface and an internal peripheral surface.

また、鋼管矢板については、上記各実施形態からわかるように、鋼管矢板が備える継手鋼管のうち少なくとも1つが外周面に突起部を有していればよく、また、図1の継手鋼管3bや図8の継手鋼管21bのように外周面に突起部を有しない継手鋼管は内周面に突起部を有することが好ましい。   As for the steel pipe sheet pile, as can be seen from each of the above embodiments, at least one of the joint steel pipes provided in the steel pipe sheet piles only needs to have a protrusion on the outer peripheral surface, and the joint steel pipe 3b of FIG. It is preferable that the joint steel pipe which does not have a protrusion part in an outer peripheral surface like the joint steel pipe 21b of 8 has a protrusion part in an inner peripheral surface.

さらに、上記すべての実施形態において、継手鋼管の外径は165.2mm、突起部を除く板厚は11mmを例示しているが、継手鋼管の外径及び板厚に限定されるものではない。ここで、継手鋼管の外径が大きくなると掘削洗浄及びモルタル充填作業に必要な空間は大きくなり、作業の確実性は向上するが、継手鋼管の外径が大きくなると打設時の抵抗も大きくなり、変形も大きくなるので、継手鋼管の外径は、例えば、300mm以下であることが望ましい。   Furthermore, in all the embodiments described above, the outer diameter of the joint steel pipe is 165.2 mm and the plate thickness excluding the protrusions is 11 mm. However, it is not limited to the outer diameter and the plate thickness of the joint steel pipe. Here, when the outer diameter of the joint steel pipe is increased, the space required for excavation cleaning and mortar filling work is increased, and the reliability of the work is improved. However, when the outer diameter of the joint steel pipe is increased, the resistance at the time of placing is also increased. Since the deformation also increases, it is desirable that the outer diameter of the joint steel pipe is, for example, 300 mm or less.

本発明の第一実施形態に係る鋼管矢板を示す図である。It is a figure which shows the steel pipe sheet pile which concerns on 1st embodiment of this invention. 本発明の第一実施形態に係る鋼管矢板の連結構造を示す図である。It is a figure which shows the connection structure of the steel pipe sheet pile which concerns on 1st embodiment of this invention. 鋼管矢板継手が広がる方向に打設された状態を示す図である。It is a figure which shows the state laid in the direction where a steel pipe sheet pile joint spreads. 本発明の第一実施形態に係る他の鋼管矢板の連結構造を示す図である。It is a figure which shows the connection structure of the other steel pipe sheet pile which concerns on 1st embodiment of this invention. 本発明の第二実施形態に係る鋼管矢板を示す図である。It is a figure which shows the steel pipe sheet pile which concerns on 2nd embodiment of this invention. 本発明の第二実施形態に係る鋼管矢板の連結構造を示す図である。It is a figure which shows the connection structure of the steel pipe sheet pile which concerns on 2nd embodiment of this invention. 本発明の第二実施形態に係る他の鋼管矢板の連結構造を示す図である。It is a figure which shows the connection structure of the other steel pipe sheet pile which concerns on 2nd embodiment of this invention. 本発明の第三実施形態に係る鋼管矢板を示す図である。It is a figure which shows the steel pipe sheet pile which concerns on 3rd embodiment of this invention. 本発明の第三実施形態に係る鋼管矢板の連結構造を示す図である。It is a figure which shows the connection structure of the steel pipe sheet pile which concerns on 3rd embodiment of this invention. 本発明の第三実施形態に係る他の鋼管矢板の連結構造を示す図である。It is a figure which shows the connection structure of the other steel pipe sheet pile which concerns on 3rd embodiment of this invention. 本発明の第四実施形態に係る鋼管矢板を示す図である。It is a figure which shows the steel pipe sheet pile which concerns on 4th embodiment of this invention. 本発明の第四実施形態に係る鋼管矢板の連結構造を示す図である。It is a figure which shows the connection structure of the steel pipe sheet pile which concerns on 4th embodiment of this invention. 本発明の第四実施形態に係る鋼管矢板の連結構造を有する鋼管矢板基礎全体を示す図である。It is a figure which shows the steel pipe sheet pile foundation whole which has the connection structure of the steel pipe sheet pile which concerns on 4th embodiment of this invention. 従来の鋼管矢板の連結構造を示す図である。It is a figure which shows the connection structure of the conventional steel pipe sheet pile. 内面にのみ突起部を有する継手鋼管を備えた鋼管矢板の連結構造を示す図である。It is a figure which shows the connection structure of the steel pipe sheet pile provided with the joint steel pipe which has a projection part only on the inner surface.

符号の説明Explanation of symbols

1、8、10、11、16、18、20、25、27、30、40 鋼管矢板
2 鋼管矢板本管
S スリット
3、7、9、12、15、17、21、24、26、31、41、50 継手鋼管
3a、12a、21a、31a 一方の継手鋼管
3b、12b、21b、31b 他方の継手鋼管
4、51 突起
5、13、22、32 連結構造
6、14、23、33、42、52 嵌合部
101 鋼管矢板基礎
102 隔壁部
103 交差部
1, 8, 10, 11, 16, 18, 20, 25, 27, 30, 40 Steel pipe sheet pile 2 Steel pipe sheet pile main pipe S Slit 3, 7, 9, 12, 15, 17, 21, 24, 26, 31, 41, 50 Joint steel pipes 3a, 12a, 21a, 31a One joint steel pipe 3b, 12b, 21b, 31b The other joint steel pipe
4, 51 Protrusions 5, 13, 22, 32 Connecting structures 6, 14, 23, 33, 42, 52 Fitting portion 101 Steel pipe sheet pile foundation 102 Partition portion 103 Intersection

Claims (5)

鋼管矢板本管の外周面に、長手方向に延びるスリットを有する継手鋼管が一体に固定された鋼管矢板を用い、隣接する鋼管矢板の対向する一対の前記継手鋼管を嵌合して、該嵌合部に流動性固化材を充填することにより鋼管矢板を連結する連結構造において、
一方の前記継手鋼管は外周面に突起部を有し、他方の前記継手鋼管は内周面に突起部を有することを特徴とする鋼管矢板の連結構造。
A steel pipe sheet pile in which a joint steel pipe having a slit extending in the longitudinal direction is integrally fixed to the outer peripheral surface of the steel pipe sheet pile main pipe, and a pair of the joint steel pipes facing each other adjacent steel pipe sheet piles is fitted, and the fitting is performed. In the connection structure that connects the steel pipe sheet pile by filling the part with a fluidized solidifying material,
One said joint steel pipe has a projection part in an outer peripheral surface, and the other said joint steel pipe has a projection part in an inner peripheral surface, The connection structure of the steel pipe sheet pile characterized by the above-mentioned.
前記一方の継手鋼管は内周面にも突起部を有することを特徴とする請求項1に記載の鋼管矢板の連結構造。   2. The steel pipe sheet pile connection structure according to claim 1, wherein the one joint steel pipe has a protrusion on an inner peripheral surface thereof. 前記他方の継手鋼管は外周面にも突起部を有することを特徴とする請求項1又は2に記載の鋼管矢板の連結構造。   The steel pipe sheet pile connection structure according to claim 1 or 2, wherein the other joint steel pipe has a protrusion on an outer peripheral surface. 鋼管矢板本管の外周面に、長手方向に延びるスリットを有する継手鋼管が一体に固定された鋼管矢板において、
少なくとも1つの前記継手鋼管は外周面に突起部を有することを特徴とする鋼管矢板。
In the steel pipe sheet pile in which a joint steel pipe having a slit extending in the longitudinal direction is integrally fixed to the outer peripheral surface of the steel pipe sheet pile main pipe,
The steel pipe sheet pile, wherein at least one of the joint steel pipes has a protrusion on an outer peripheral surface.
請求項4に記載の鋼管矢板において、外周面に突起部を有しない前記継手鋼管は内周面に突起部を有することを特徴とする鋼管矢板。

The steel pipe sheet pile according to claim 4, wherein the joint steel pipe having no protrusion on the outer peripheral surface has a protrusion on the inner peripheral surface.

JP2004353226A 2004-12-06 2004-12-06 Connection structure of mutual steel pipe sheet piles Pending JP2006161375A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008095490A (en) * 2006-09-14 2008-04-24 Sumitomo Metal Ind Ltd Steel pipe sheet pile, connection structure of steel pipe sheet pile, and joint steel pipe for steel pipe sheet pile
JP2009215746A (en) * 2008-03-10 2009-09-24 Sumitomo Metal Ind Ltd Steel pipe sheet pile and connection structure of steel pipe sheet pile
JP2009249911A (en) * 2008-04-07 2009-10-29 Sumitomo Metal Ind Ltd Steel pipe sheet pile and its connection structure
CN106836126A (en) * 2016-12-07 2017-06-13 孟展 New water and soil conservation protecting tube
JP2020117960A (en) * 2019-01-25 2020-08-06 日本製鉄株式会社 Levee body reinforcement structure
JP2022146139A (en) * 2021-03-22 2022-10-05 Jfeスチール株式会社 Joint structure of steel sheet piles, steel sheet pile, and joining method of steel sheet piles

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008095490A (en) * 2006-09-14 2008-04-24 Sumitomo Metal Ind Ltd Steel pipe sheet pile, connection structure of steel pipe sheet pile, and joint steel pipe for steel pipe sheet pile
JP2009215746A (en) * 2008-03-10 2009-09-24 Sumitomo Metal Ind Ltd Steel pipe sheet pile and connection structure of steel pipe sheet pile
JP2009249911A (en) * 2008-04-07 2009-10-29 Sumitomo Metal Ind Ltd Steel pipe sheet pile and its connection structure
CN106836126A (en) * 2016-12-07 2017-06-13 孟展 New water and soil conservation protecting tube
JP2020117960A (en) * 2019-01-25 2020-08-06 日本製鉄株式会社 Levee body reinforcement structure
JP7183817B2 (en) 2019-01-25 2022-12-06 日本製鉄株式会社 Embankment reinforcement structure
JP2022146139A (en) * 2021-03-22 2022-10-05 Jfeスチール株式会社 Joint structure of steel sheet piles, steel sheet pile, and joining method of steel sheet piles

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