JP6481566B2 - Straightening structure and straightening method for steel pipe pile joints - Google Patents

Straightening structure and straightening method for steel pipe pile joints Download PDF

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JP6481566B2
JP6481566B2 JP2015173471A JP2015173471A JP6481566B2 JP 6481566 B2 JP6481566 B2 JP 6481566B2 JP 2015173471 A JP2015173471 A JP 2015173471A JP 2015173471 A JP2015173471 A JP 2015173471A JP 6481566 B2 JP6481566 B2 JP 6481566B2
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joint
fitting
wire
steel pipe
fitting joint
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JP2017048621A (en
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吉郎 石濱
吉郎 石濱
雅司 北濱
雅司 北濱
弘信 松宮
弘信 松宮
義法 小林
義法 小林
俊彦 坂本
俊彦 坂本
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Nippon Steel Corp
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Nippon Steel and Sumitomo Metal Corp
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Description

本発明は、複数の鋼管杭の継手部分を矯正して連結する鋼管杭継手の矯正構造及び矯正方法に関する。   The present invention relates to a straightening structure and straightening method for a steel pipe pile joint that straightens and connects joint portions of a plurality of steel pipe piles.

従来から、鋼管の管端部を油圧シリンダ装置のシリンダ部により当て金を介して拡径させる際の該管端部の局部変形を防止するとともに、制御性を容易にして精度の高い真円矯正を実現するものとして、例えば、特許文献1に開示された鋼管矢板等の管端部真円矯正方法が提案されている。   Conventionally, the pipe end of a steel pipe is prevented from local deformation when the diameter of the pipe end is expanded by a cylinder of a hydraulic cylinder device through a metal plate, and the roundness of the pipe is easily controlled and highly accurate. For example, a pipe end roundness correction method such as a steel pipe sheet pile disclosed in Patent Document 1 has been proposed.

特許文献1に開示された鋼管矢板等の管端部真円矯正方法は、管体の管端部内に挿入された油圧シリンダ装置のシリンダ部の先端に、上記管端部の曲率に近い曲率の押圧面をもった当て金を取り付け、上記シリンダ部を伸張変位させて上記当て金を介して管端部を拡径変形させる際に、上記シリンダ部の変位量に対する当て金押圧面と管端部との接触面積の変化率を求め、この接触面積の変化率に応じて荷重値が変化するように上記シリンダ装置の油圧を制御しながら管端部の真円矯正を行なうことを特徴とする。   A pipe end roundness correction method such as a steel pipe sheet pile disclosed in Patent Document 1 has a curvature close to the curvature of the pipe end at the tip of a cylinder part of a hydraulic cylinder device inserted into the pipe end of the pipe body. When a stopper with a pressing surface is attached and the cylinder part is extended and displaced, and the pipe end is expanded and deformed via the stopper, the stopper pressing surface and the pipe end with respect to the displacement amount of the cylinder The rate of change of the contact area with the cylinder is obtained, and the roundness of the pipe end is corrected while controlling the hydraulic pressure of the cylinder device so that the load value changes according to the rate of change of the contact area.

特開平5−177257号公報JP-A-5-177257

しかし、特許文献1に開示された鋼管矢板等の管端部真円矯正方法は、管体の管端部内に挿入される油圧シリンダ装置等が大型となるため、施工現場でのハンドリングに多大なコストを要するうえに困難を伴うものとなる。また、特許文献1に開示された鋼管矢板等の管端部真円矯正方法は、油圧シリンダ装置のシリンダ部を伸張変位させて管端部を塑性変形させるため、管端部の真円矯正に大きな荷重が必要となる。   However, the pipe end roundness correction method such as a steel pipe sheet pile disclosed in Patent Document 1 requires a large size of a hydraulic cylinder device or the like inserted into the pipe end portion of the pipe body, which is very large for handling at a construction site. It is costly and difficult. In addition, the pipe end roundness correction method disclosed in Patent Document 1, such as a steel pipe sheet pile, causes the pipe end to be plastically deformed by stretching and displacing the cylinder part of the hydraulic cylinder device. A large load is required.

このため、特許文献1に開示された鋼管矢板等の管端部真円矯正方法は、管端部を塑性変形させる場合、均一な変形を与えて真円矯正することは技術的に難しく、場合によっては管端部に局所的な変形が残留等して、構造的性能に悪影響となるおそれがあった。また、特許文献1に開示された鋼管矢板等の管端部真円矯正方法は、管端部内に設置した油圧シリンダ装置等の撤去も困難であり、複数の鋼管杭を地盤中に施工するときの障害ともなる。   For this reason, when the pipe end roundness correction method such as the steel pipe sheet pile disclosed in Patent Document 1 is plastically deformed, it is technically difficult to correct the round by giving uniform deformation. Depending on the case, local deformation may remain at the end of the tube, which may adversely affect the structural performance. In addition, the pipe end roundness correction method such as the steel pipe sheet pile disclosed in Patent Document 1 is difficult to remove the hydraulic cylinder device installed in the pipe end, and when constructing a plurality of steel pipe piles in the ground It also becomes an obstacle.

そこで、本発明は、上述した問題点に鑑みて案出されたものであって、その目的とするところは、ボルト、ワイヤー等の単純な部材を用いて、安価かつ簡便に鋼管杭の継手部分を矯正して、工期やコストを削減することのできる鋼管杭継手の矯正構造及び矯正方法を提供することにある。   Therefore, the present invention has been devised in view of the above-described problems, and the object of the present invention is to use a simple member such as a bolt or a wire, and to make a joint portion of a steel pipe pile inexpensively and easily. It is in providing the straightening structure and straightening method of the steel pipe pile joint which can reduce a construction period and cost.

第1発明に係る鋼管杭継手の矯正構造は、複数の鋼管杭の継手部分を矯正して連結する鋼管杭継手の矯正構造であって、管長方向で外嵌継手と内嵌継手とが連結される継手部分で、前記外嵌継手に挿入される前記内嵌継手の内空部に架設されるワイヤーと、前記内嵌継手の外周部を貫通させて形成されたワイヤー挿通孔と、前記ワイヤーの端部に設けられる進退部材とを備え、前記ワイヤーは、前記ワイヤー挿通孔に前記端部が挿通されて、前記ワイヤー挿通孔に挿通された前記端部を、前記進退部材により管径方向に進退移動させることで、管径方向の緊張力が導入又は緩和されることを特徴とする。   The straightening structure of the steel pipe pile joint according to the first invention is a straightening structure of a steel pipe pile joint that straightens and connects the joint portions of a plurality of steel pipe piles, and the external fitting joint and the internal fitting joint are connected in the pipe length direction. A wire erected in the inner space of the inner fitting joint inserted into the outer fitting joint, a wire insertion hole formed through the outer periphery of the inner fitting joint, An advancing / retreating member provided at an end, and the wire is advanced / retracted in the tube diameter direction by the advancing / retreating member with the end inserted into the wire insertion hole, and the end inserted through the wire insertion hole. By moving, the tension in the radial direction of the tube is introduced or alleviated.

第2発明に係る鋼管杭継手の矯正構造は、第1発明において、前記ワイヤーは、一対の前記ワイヤー挿通孔に両端部が挿通されて、一方の前記端部がワイヤー留部で固定されるとともに、他方の前記端部が前記進退部材に固定されて、前記ワイヤー挿通孔に螺合された前記進退部材を管径方向に進退移動させることで、前記進退部材とともに前記端部が管径方向に進退移動するものとなることを特徴とする。   The straightening structure of the steel pipe pile joint according to the second invention is the first invention, wherein both ends of the wire are inserted into a pair of the wire insertion holes, and one of the ends is fixed by a wire retaining portion. The other end is fixed to the advancing / retracting member, and the advancing / retreating member screwed into the wire insertion hole is moved forward / backward in the tube radial direction, so that the end is moved in the tube radial direction together with the advance / retreat member. It is characterized by moving forward and backward.

第3発明に係る鋼管杭継手の矯正構造は、第1発明又は第2発明において、前記外嵌継手は、管長方向の先端側に設けられる外嵌先端部を有して、前記外嵌先端部の外面が切り欠かれることで、前記外嵌先端部に外嵌側キー溝部が形成されて、前記内嵌継手は、管長方向の基端側に設けられる内嵌基端部を有して、前記内嵌基端部の外面が切り欠かれることで、前記内嵌基端部に内嵌側キー溝部が形成されて、前記外嵌継手及び前記内嵌継手は、管長方向で互いに連結した状態で、前記外嵌側キー溝部と前記内嵌側キー溝部とを管長方向に連続させたキー溝部が形成されて、管長方向に延びるキー部材が、前記外嵌側キー溝部から前記内嵌側キー溝部まで架設されて、前記キー部材は、管径方向に貫通させてキー穴部が形成されて、前記キー穴部から前記ワイヤー挿通孔まで挿通される軸構造で、前記キー溝部に嵌め込まれて固定されることを特徴とする。   The straightening structure of the steel pipe pile joint according to the third invention is the first invention or the second invention, wherein the outer fitting joint has an outer fitting tip provided on the tip side in the pipe length direction, and the outer fitting tip. The outer surface of the outer fitting side key groove portion is formed at the outer fitting distal end portion, the inner fitting joint has an inner fitting proximal end portion provided on the proximal end side in the tube length direction, The outer surface of the inner fitting base end is notched so that an inner fitting side key groove is formed in the inner fitting base end, and the outer fitting joint and the inner fitting joint are connected to each other in the tube length direction. A key groove formed by connecting the outer fitting side key groove and the inner fitting side key groove in the pipe length direction is formed, and a key member extending in the pipe length direction extends from the outer fitting side key groove to the inner fitting side key. The key member is erected up to the groove portion, and the key member is penetrated in the pipe diameter direction to form a key hole portion. A shaft structure to be inserted from parts to the wire insertion hole, characterized in that it is fixed fitted to the key groove.

第4発明に係る鋼管杭継手の矯正方法は、複数の鋼管杭の継手部分を矯正して連結する鋼管杭継手の矯正方法であって、管長方向で外嵌継手と内嵌継手とが連結される継手部分で、前記外嵌継手に挿入される前記内嵌継手の内空部にワイヤーを架設する架設工程と、前記内嵌継手を管周方向に弾性変形させる矯正工程とを備え、前記架設工程では、前記内嵌継手と前記外嵌継手とが連結される前に、前記内嵌継手の外周部を貫通させて形成されたワイヤー挿通孔に前記ワイヤーの端部を挿通するとともに、前記ワイヤー挿通孔に挿通された前記ワイヤーの前記端部を進退部材に固定して、前記矯正工程では、前記ワイヤー挿通孔に挿通された前記ワイヤーの前記端部を、前記進退部材により管径方向に進退移動させて、前記ワイヤーに管径方向の緊張力が導入又は緩和されることで、前記内嵌継手を管周方向に弾性変形させながら、前記内嵌継手を前記外嵌継手に挿入することを特徴とする。   A steel pipe pile joint straightening method according to a fourth aspect of the present invention is a steel pipe pile joint straightening method for straightening and connecting joint portions of a plurality of steel pipe piles, wherein the external fitting joint and the internal fitting joint are connected in the pipe length direction. A laying step of laying a wire in an inner space of the inner fitting joint inserted into the outer fitting joint, and a correction step of elastically deforming the inner fitting joint in a pipe circumferential direction. In the step, before the inner fitting joint and the outer fitting joint are connected, the end of the wire is inserted through a wire insertion hole formed by penetrating the outer periphery of the inner fitting joint, and the wire The end portion of the wire inserted through the insertion hole is fixed to an advance / retreat member, and in the correction step, the end portion of the wire inserted into the wire insertion hole is advanced / retreated in the tube diameter direction by the advance / retreat member. Move the wire to the wire By tensioning force is introduced or relaxed, while elastically deforming said inner fitting joint circumferential direction of the pipe, characterized by inserting said inner fitting joint to the outer fitting joint.

第5発明に係る鋼管杭継手の矯正方法は、第4発明において、前記矯正工程の後に、前記内嵌継手を前記外嵌継手に挿入した状態で、前記内嵌継手を変形させる再矯正工程を備え、前記再矯正工程では、前記ワイヤーに導入又は緩和される管径方向の緊張力を調整することで、前記内嵌継手を管周方向に自在に変形させながら、前記外嵌継手と前記内嵌継手とを管周方向で相対回転させて、前記内嵌継手と前記外嵌継手とが連結されることを特徴とする。   The steel pipe pile joint straightening method according to a fifth aspect of the present invention is the fourth aspect of the present invention, wherein, after the straightening step, the refit step of deforming the internal fitting joint with the internal fitting joint being inserted into the external fitting joint. And in the re-correction step, the inner fitting joint and the inner fitting joint are deformed freely in the pipe circumferential direction by adjusting the tensile force in the pipe radial direction introduced or relaxed to the wire. The inner fitting joint and the outer fitting joint are connected by relatively rotating the fitting joint in the pipe circumferential direction.

第1発明〜第3発明によれば、ワイヤー、進退部材及びワイヤー留部等の単純な部材を用いるのみで、人力等による容易な作業で複数の鋼管杭の継手部分を矯正することができるため、安価かつ簡便に鋼管杭の継手部分を矯正して連結することで、工期やコストを削減することが可能となる。   According to the first to third inventions, the joint portions of a plurality of steel pipe piles can be corrected by an easy operation by human power or the like only by using simple members such as a wire, an advance / retreat member, and a wire retaining portion. It is possible to reduce the construction period and cost by correcting and connecting the joint portions of the steel pipe piles inexpensively and simply.

第1発明〜第3発明によれば、内嵌継手の内空部のワイヤーに緊張力が導入又は緩和されて、内嵌継手の外周部が弾性変形することで、内嵌継手の塑性変形を最小限に抑制して、内嵌継手の内嵌山部と外嵌継手の外嵌山部とが確実に噛み合うものとなり、内嵌継手の過度な変形による荷重伝達性能の低下を回避することが可能となる。   According to 1st invention-3rd invention, tension | tensile_strength is introduce | transduced or relieve | moderated to the wire of the inner space part of an internal fitting joint, and the outer peripheral part of an internal fitting joint elastically deforms, and plastic deformation of an internal fitting joint is carried out. It is possible to suppress the load transmission performance from being deteriorated due to excessive deformation of the internal fitting joint by ensuring that the internal fitting mountain portion of the internal fitting joint and the external fitting mountain portion of the external fitting joint are securely engaged with each other. It becomes possible.

第1発明〜第3発明によれば、ワイヤー、進退部材及びワイヤー留部等を撤去した後、キー部材がキー溝部に嵌め込まれて、第1鋼管杭と第2鋼管杭とが一体となって地盤内に埋設されるため、内嵌継手の内空部にワイヤーを残さないことで土砂から受ける抵抗を低減させて、複数の鋼管杭の円滑な施工を実現することが可能となる。   According to 1st invention-3rd invention, after removing a wire, advancing / retreating member, a wire retaining part, etc., a key member is inserted in a key groove part, and a 1st steel pipe pile and a 2nd steel pipe pile are united. Since it is embedded in the ground, it is possible to reduce the resistance received from the earth and sand by leaving no wire in the inner space of the internal fitting joint, and to achieve smooth construction of a plurality of steel pipe piles.

特に、第3発明によれば、ワイヤーの端部を挿通するためのワイヤー挿通孔を利用して、ボルト等の軸構造でキー部材をキー溝部に固定して嵌め込むことができるため、内嵌継手の外周部に必要以上の削孔をさせないものとして、内嵌継手の強度低下を回避しながら、複数の鋼管杭の継手部分を矯正することが可能となる。   In particular, according to the third aspect of the present invention, since the key member can be fixed and fitted to the key groove portion with a shaft structure such as a bolt using the wire insertion hole for inserting the end portion of the wire, Assuming that the outer peripheral portion of the joint is not drilled more than necessary, it is possible to correct joint portions of a plurality of steel pipe piles while avoiding a decrease in the strength of the internally fitted joint.

第4発明、第5発明によれば、架設工程でワイヤー、進退部材及びワイヤー留部等の単純な部材を用いて、また、矯正工程で人力等による容易な作業で複数の鋼管杭の継手部分を矯正できるため、鋼管杭の継手部分を矯正して連結するための工期やコストを削減することが可能となるとともに、内嵌継手の弾性変形により内嵌継手の塑性変形を最小限に抑制して、内嵌継手の過度な変形による荷重伝達性能の低下を回避することが可能となる。   According to 4th invention, 5th invention, it uses a simple member, such as a wire, an advancing / retreating member, and a wire retaining part, in the erection process, and the joint part of a plurality of steel pipe piles by easy work by human power etc. in the correction process Therefore, it is possible to reduce the work period and cost for correcting and connecting the joint part of the steel pipe pile, and the plastic deformation of the internal fitting joint is minimized by elastic deformation of the internal fitting joint. Thus, it is possible to avoid a decrease in load transmission performance due to excessive deformation of the internal fitting joint.

特に、第5発明によれば、内嵌継手を外嵌継手に挿入してから、再矯正工程でワイヤーに導入された緊張力を調整して、内嵌継手の外周部を管周方向で自在に変形させることで、外嵌継手と内嵌継手とを管周方向に相対回転させることができるため、外嵌継手と内嵌継手とを相対回転させて連結させるギア式の継手部分においても、工期やコストを削減させるとともに内嵌継手の荷重伝達性能の維持を図りながら継手部分を矯正することが可能となる。   In particular, according to the fifth invention, after inserting the inner fitting joint into the outer fitting joint, the tension introduced into the wire in the re-correction process is adjusted, and the outer peripheral portion of the inner fitting joint is freely movable in the pipe circumferential direction. Since the outer fitting joint and the inner fitting joint can be rotated relative to each other in the pipe circumferential direction, the outer fitting joint and the inner fitting joint can be relatively rotated and connected to each other. It is possible to correct the joint portion while reducing the work period and cost and maintaining the load transmission performance of the internally fitting joint.

本発明を適用した鋼管杭継手の矯正構造が用いられる複数の鋼管杭の継手部分を示す斜視図である。It is a perspective view which shows the joint part of the some steel pipe pile in which the correction structure of the steel pipe pile joint to which this invention is applied is used. 本発明を適用した鋼管杭継手の矯正構造が用いられるギア式継手の外嵌継手及び内嵌継手を示す斜視図である。It is a perspective view which shows the external fitting joint and internal fitting joint of the gear type joint in which the correction structure of the steel pipe pile joint to which this invention is applied. 本発明を適用した鋼管杭継手の矯正構造が用いられる外嵌継手を示す正面図である。It is a front view which shows the external fitting joint in which the correction structure of the steel pipe pile joint to which this invention is applied is used. 本発明を適用した鋼管杭継手の矯正構造が用いられる内嵌継手を示す正面図である。It is a front view which shows the internal fitting joint in which the correction structure of the steel pipe pile joint to which this invention is applied is used. 本発明を適用した鋼管杭継手の矯正構造が用いられる外嵌継手及び内嵌継手の変形例を示す斜視図である。It is a perspective view which shows the modification of an external fitting joint and an internal fitting joint in which the correction structure of the steel pipe pile joint to which this invention is applied. 本発明を適用した鋼管杭継手の矯正構造を示す正面図である。It is a front view which shows the correction structure of the steel pipe pile joint to which this invention is applied. 本発明を適用した鋼管杭継手の矯正構造を示す平面図である。It is a top view which shows the correction structure of the steel pipe pile joint to which this invention is applied. (a)は、本発明を適用した鋼管杭継手の矯正構造でワイヤーの一方の端部を示す拡大正面図であり、(b)は、その変形例を示す拡大正面図である。(A) is an enlarged front view which shows one edge part of a wire with the correction structure of the steel pipe pile joint to which this invention is applied, (b) is an enlarged front view which shows the modification. (a)は、本発明を適用した鋼管杭継手の矯正構造でワイヤーの他方の端部を示す拡大正面図であり、(b)は、その進退移動を示す拡大正面図である。(A) is an enlarged front view which shows the other edge part of a wire with the correction structure of the steel pipe pile joint to which this invention is applied, (b) is an enlarged front view which shows the advancing / retreating movement. 本発明を適用した鋼管杭継手の矯正構造でワイヤーの他方の端部の変形例を示す拡大正面図である。It is an enlarged front view which shows the modification of the other edge part of the wire by the correction structure of the steel pipe pile joint to which this invention is applied. (a)は、本発明を適用した鋼管杭継手の矯正構造でワイヤーの何れかの端部に設けられた進退部材を示す正面図であり、(b)は、ワイヤーの両端部に設けられた進退部材を示す正面図である。(A) is a front view which shows the advancing / retreating member provided in either end part of the wire in the straightening structure of the steel pipe pile joint to which the present invention is applied, and (b) is provided in both end parts of the wire. It is a front view which shows an advance / retreat member. 本発明を適用した鋼管杭継手の矯正構造で内嵌継手の外周部が弾性変形する状態を示す平面図である。It is a top view which shows the state which the outer peripheral part of an internal fitting joint elastically deforms by the correction structure of the steel pipe pile joint to which this invention is applied. 本発明を適用した鋼管杭継手の矯正方法で外嵌継手に内嵌継手を挿入する前の状態を示す斜視図である。It is a perspective view which shows the state before inserting an internal fitting joint in an external fitting joint by the correction method of the steel pipe pile joint to which this invention is applied. 本発明を適用した鋼管杭継手の矯正方法の架設工程を示す正面図である。It is a front view which shows the construction process of the correction method of the steel pipe pile joint to which this invention is applied. 本発明を適用した鋼管杭継手の矯正方法の矯正工程でワイヤーに緊張力が導入される状態を示す正面図である。It is a front view which shows the state by which tension | tensile_strength is introduced into a wire by the correction process of the correction method of the steel pipe pile joint to which this invention is applied. 本発明を適用した鋼管杭継手の矯正方法の矯正工程でワイヤーに導入された緊張力が緩和された状態を示す正面図である。It is a front view which shows the state by which the tension | tensile_strength introduced into the wire was eased by the correction process of the correction method of the steel pipe pile joint which applied this invention. 本発明を適用した鋼管杭継手の矯正方法の矯正工程を示す正面図である。It is a front view which shows the correction process of the correction method of the steel pipe pile joint to which this invention is applied. 本発明を適用した鋼管杭継手の矯正方法で外嵌継手に内嵌継手を挿入する状態を示す斜視図である。It is a perspective view which shows the state which inserts an internal fitting joint in an external fitting joint by the correction method of the steel pipe pile joint to which this invention is applied. 本発明を適用した鋼管杭継手の矯正方法で外嵌継手と内嵌継手とを相対回転させた状態を示す斜視図である。It is a perspective view which shows the state which rotated the external fitting joint and the internal fitting joint by the correction method of the steel pipe pile joint to which this invention is applied. 本発明を適用した鋼管杭継手の矯正方法の再矯正工程を示す平面図である。It is a top view which shows the re-correction process of the correction method of the steel pipe pile joint to which this invention is applied. 本発明を適用した鋼管杭継手の矯正構造で外嵌側キー溝部から内嵌側キー溝部まで架設されるキー部材を示す正面図である。It is a front view which shows the key member constructed from the external fitting side keyway part to the internal fitting side keyway part by the correction structure of the steel pipe pile joint to which this invention is applied. 本発明を適用した鋼管杭継手の矯正構造でキー溝部にキー部材を架設した複数の鋼管杭の継手部分を示す正面図である。It is a front view which shows the joint part of the some steel pipe pile which constructed the key member in the key groove part by the correction structure of the steel pipe pile joint to which this invention is applied. 本発明を適用した鋼管杭継手の矯正構造が用いられる相対回転させずに直進して連結される外嵌継手と内嵌継手とを示す斜視図である。It is a perspective view which shows the external fitting joint and internal fitting joint which are straightly connected without making relative rotation in which the correction structure of the steel pipe pile joint to which this invention is applied is used. 本発明を適用した鋼管杭継手の矯正構造が用いられるネジ式継手の外嵌継手及び内嵌継手を示す正面図である。It is a front view which shows the external fitting joint and internal fitting joint of the screw type joint in which the correction structure of the steel pipe pile joint to which this invention is applied.

以下、本発明を適用した鋼管杭継手の矯正構造1及び矯正方法を実施するための形態について、図面を参照しながら詳細に説明する。   EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the straightening structure 1 and straightening method of the steel pipe pile joint to which this invention is applied is demonstrated in detail, referring drawings.

本発明を適用した鋼管杭継手の矯正構造1は、地盤上に構築される構造物の基礎杭等で、図1に示すように、断面形状が略円形状等に形成された複数の鋼管杭2を管長方向Yに連結するときに、複数の鋼管杭2の継手部分Fを矯正するものとして用いられる。   A steel pipe pile joint straightening structure 1 to which the present invention is applied is a foundation pile or the like constructed on the ground, and as shown in FIG. 1, a plurality of steel pipe piles having a cross-sectional shape formed into a substantially circular shape or the like. When connecting 2 to the pipe length direction Y, it is used as what corrects the joint part F of the some steel pipe pile 2. FIG.

複数の鋼管杭2は、地盤内8の下方に埋め込まれる第1鋼管杭21と、地盤内8の上方に埋め込まれる第2鋼管杭22とが、複数の鋼管杭2として管長方向Yで互いに継手部分Fで連結されて、打撃工法、バイブロハンマー工法、中掘り工法や回転トルクを導入した回転圧入工法等により地盤内8に埋設される。   In the plurality of steel pipe piles 2, a first steel pipe pile 21 embedded below the ground 8 and a second steel pipe pile 22 embedded above the ground 8 are coupled to each other in the pipe length direction Y as the plurality of steel pipe piles 2. It is connected at the portion F and is buried in the ground 8 by a hitting method, a vibro hammer method, a digging method, a rotary press-fitting method in which rotational torque is introduced, or the like.

複数の鋼管杭2は、第1鋼管杭21の上端部に略円形状の外嵌継手3が取り付けられるとともに、第2鋼管杭22の下端部に略円形状の内嵌継手4が取り付けられて、管長方向Yで外嵌継手3と内嵌継手4とが連結される継手部分Fが形成される。   The plurality of steel pipe piles 2 have a substantially circular outer fitting joint 3 attached to the upper end portion of the first steel pipe pile 21 and a substantially circular inner fitting joint 4 attached to the lower end portion of the second steel pipe pile 22. A joint portion F where the outer fitting joint 3 and the inner fitting joint 4 are connected in the pipe length direction Y is formed.

外嵌継手3は、図2に示すように、管長方向Yの先端側に設けられる外嵌先端部34を有して、外嵌先端部34が第2鋼管杭22に向けて、管長方向Yに延びて形成される。外嵌継手3は、管長方向Yの基端側に設けられる外嵌基端部35を有して、外嵌基端部35の下端部が第1鋼管杭21の上端部に溶接等で取り付けられる。   As shown in FIG. 2, the outer fitting joint 3 has an outer fitting tip 34 provided on the tip side in the pipe length direction Y, and the outer fitting tip 34 faces the second steel pipe pile 22, and the pipe length direction Y It is formed to extend. The outer fitting joint 3 has an outer fitting base end portion 35 provided on the base end side in the pipe length direction Y, and the lower end portion of the outer fitting base end portion 35 is attached to the upper end portion of the first steel pipe pile 21 by welding or the like. It is done.

外嵌継手3は、外嵌先端部34から外嵌基端部35まで管長方向Yに連続して、略円筒形状に延びる外周部37が形成される。外嵌継手3は、管長方向Yで略円筒形状に延びる外周部37が形成されて、管径方向Xの内側Aの内周面から外側Bの外周面まで連続する全断面で所定の板厚となるように外周部37が形成される。外嵌継手3は、外周部37の管径方向Xの内側Aで、略中空状の内空部30が形成されるとともに、外嵌継手3の内空部30に内嵌継手4が挿入されるものとなる。   The outer fitting joint 3 has an outer peripheral portion 37 extending in a substantially cylindrical shape continuously from the outer fitting distal end portion 34 to the outer fitting proximal end portion 35 in the tube length direction Y. The outer fitting 37 is formed with an outer peripheral portion 37 extending in a substantially cylindrical shape in the tube length direction Y, and has a predetermined plate thickness in the entire cross section continuous from the inner peripheral surface of the inner side A to the outer peripheral surface of the outer side B in the pipe radial direction X. The outer peripheral part 37 is formed so that The outer fitting 3 has a substantially hollow inner space 30 formed on the inner side A of the outer peripheral portion 37 in the tube diameter direction X, and the inner fitting 4 is inserted into the inner space 30 of the outer fitting 3. Will be.

外嵌継手3は、外嵌先端部34から外嵌基端部35までの内周面に、管径方向Xで内側Aに突出して複数の外嵌山部31が形成される。外嵌継手3は、図3に示すように、外嵌山部31が内周面から突出することで、管周方向Wで外嵌山部31に隣り合った外嵌溝部32と、管長方向Yの基端側で外嵌山部31に隣り合った外嵌谷部33とが形成される。   The outer fitting joint 3 protrudes inward A in the pipe diameter direction X on the inner peripheral surface from the outer fitting distal end portion 34 to the outer fitting proximal end portion 35, and a plurality of outer fitting mountain portions 31 are formed. As shown in FIG. 3, the outer fitting joint 3 has an outer fitting groove portion 31 that protrudes from the inner peripheral surface, so that an outer fitting groove portion 32 adjacent to the outer fitting mountain portion 31 in the pipe circumferential direction W, and a pipe length direction. An external fitting valley portion 33 adjacent to the external fitting mountain portion 31 is formed on the base end side of Y.

外嵌継手3は、複数の外嵌山部31が管長方向Yで略一列に配置されて、管長方向Yで4段に亘って、複数の外嵌段部36が形成される。外嵌継手3は、各々の外嵌段部36において、外嵌山部31と外嵌溝部32とが、管周方向Wで交互に形成されるとともに、外嵌山部31と外嵌谷部33とが、管長方向Yに隣り合って形成される。   In the outer fitting joint 3, a plurality of outer fitting mountain portions 31 are arranged in a line in the tube length direction Y, and a plurality of outer fitting step portions 36 are formed in four steps in the tube length direction Y. In the outer fitting joint 3, the outer fitting mountain portions 31 and the outer fitting groove portions 32 are alternately formed in the pipe circumferential direction W in each outer fitting step portion 36, and the outer fitting mountain portion 31 and the outer fitting valley portion. 33 are formed adjacent to each other in the tube length direction Y.

外嵌継手3は、各々の外嵌段部36において、外嵌山部31の板厚よりも外嵌溝部32の板厚が小さく、外嵌山部31の板厚よりも外嵌谷部33の板厚が小さくなる。外嵌継手3は、管長方向Yに隣り合う外嵌段部36において、管長方向Yの先端側の外嵌谷部33の板厚よりも、管長方向Yの基端側の外嵌谷部33の板厚が大きいものとなる。   In each of the external fitting joints 3, the thickness of the external fitting groove 32 is smaller than the thickness of the external fitting mountain portion 31 and the external fitting valley portion 33 is smaller than the thickness of the external fitting mountain portion 31. The plate thickness becomes smaller. The external fitting joint 3 has an external fitting valley portion 33 on the proximal end side in the tube length direction Y rather than the plate thickness of the external fitting valley portion 33 on the distal end side in the tube length direction Y at the external fitting step portion 36 adjacent to the tube length direction Y. The plate thickness is large.

外嵌継手3は、外嵌先端部34の外面34aが切り欠かれることで、外嵌先端部34に外嵌側キー溝部71が形成される。外嵌継手3は、外嵌先端部34の外面34aから内側Aに貫通させて、外嵌溝部32と略同一の管周方向Wの幅で、外嵌側キー溝部71が形成される。外嵌側キー溝部71は、外嵌溝部32と略同一の管周方向Wの位置に形成されるが、これに限らず、外嵌山部31と略同一の位置に形成されてもよい。   In the outer fitting joint 3, an outer fitting side key groove portion 71 is formed in the outer fitting tip portion 34 by cutting out the outer surface 34 a of the outer fitting tip portion 34. The outer fitting joint 3 is penetrated from the outer surface 34a of the outer fitting tip 34 to the inner side A, and an outer fitting side key groove portion 71 is formed with a width in the pipe circumferential direction W substantially the same as the outer fitting groove portion 32. The outer fitting side key groove portion 71 is formed at a position in the pipe circumferential direction W that is substantially the same as that of the outer fitting groove portion 32, but is not limited thereto, and may be formed at a position that is substantially the same as that of the outer fitting mountain portion 31.

外嵌継手3は、外嵌側キー溝部71の管周方向Wの幅が、外嵌溝部32の管周方向Wの幅よりも小さく、又は、大きくてもよい。外嵌側キー溝部71の管周方向Wの幅が、外嵌溝部32の管周方向Wの幅よりも大きい場合は、管周方向Wで外嵌溝部32から外嵌山部31まで跨った位置に外嵌側キー溝部71が形成されるものとなる。   The outer fitting joint 3 may have a width in the pipe circumferential direction W of the outer fitting side key groove portion 71 smaller or larger than a width of the outer fitting groove portion 32 in the pipe circumferential direction W. When the width in the tube circumferential direction W of the outer fitting side key groove portion 71 is larger than the width in the tube circumferential direction W of the outer fitting groove portion 32, the outer circumferential groove W extends from the outer fitting groove portion 32 to the outer fitting mountain portion 31. The external fitting side key groove portion 71 is formed at the position.

外嵌継手3は、管周方向Wで外嵌山部31と交互に形成した複数の外嵌溝部32のうち、一部の外嵌溝部32の先端側のみが切り欠かれて、複数の外嵌溝部32の一部に外嵌側キー溝部71が形成される。また、外嵌継手3は、図5(a)に示すように、管周方向Wで外嵌山部31と交互に形成された複数の外嵌溝部32で、全部の外嵌溝部32の先端側が切り欠かれて、複数の外嵌溝部32の全部に外嵌側キー溝部71が形成されてもよい。   Of the plurality of outer fitting groove portions 32 formed alternately with the outer fitting mountain portions 31 in the pipe circumferential direction W, the outer fitting joint 3 has a plurality of outer fitting groove portions 32 cut out only at the distal end side. An external fitting side key groove portion 71 is formed in a part of the fitting groove portion 32. Further, as shown in FIG. 5A, the external fitting joint 3 includes a plurality of external fitting groove portions 32 that are alternately formed with the external fitting mountain portions 31 in the pipe circumferential direction W, and the distal ends of all the external fitting groove portions 32. The outer fitting side key groove portion 71 may be formed in all of the plurality of outer fitting groove portions 32 by notching the side.

内嵌継手4は、図2に示すように、管長方向Yの先端側に設けられる内嵌先端部44を有して、内嵌先端部44が第1鋼管杭21に向けて、管長方向Yに延びて形成される。内嵌継手4は、管長方向Yの基端側に設けられる内嵌基端部45を有して、内嵌基端部45の上端部が第2鋼管杭22の下端部に溶接等で取り付けられる。   As shown in FIG. 2, the internally fitted joint 4 has an internally fitted distal end portion 44 provided on the distal end side in the tube length direction Y, and the internally fitted distal end portion 44 faces the first steel pipe pile 21 in the tube length direction Y. It is formed to extend. The internal fitting 4 has an internal fitting base end 45 provided on the base end side in the pipe length direction Y, and the upper end of the internal fitting base end 45 is attached to the lower end of the second steel pipe pile 22 by welding or the like. It is done.

内嵌継手4は、内嵌先端部44から内嵌基端部45まで管長方向Yに連続して、略円筒形状に延びる外周部47が形成される。内嵌継手4は、管長方向Yで略円筒形状に延びる外周部47が形成されて、管径方向Xの内側Aの内周面から外側Bの外周面まで連続する全断面で所定の板厚となるように外周部47が形成される。内嵌継手4は、外周部47の管径方向Xの内側Aで、略中空状の内空部40が形成されるとともに、外嵌継手3の内空部30に外周部47が挿入されるものとなる。   The inner fitting joint 4 is formed with an outer peripheral portion 47 extending in a substantially cylindrical shape continuously from the inner fitting distal end portion 44 to the inner fitting proximal end portion 45 in the tube length direction Y. The inner fitting 4 has an outer peripheral portion 47 extending in a substantially cylindrical shape in the tube length direction Y, and has a predetermined plate thickness in the entire cross section continuous from the inner peripheral surface of the inner side A to the outer peripheral surface of the outer side B in the pipe radial direction X. The outer peripheral part 47 is formed so that In the inner fitting 4, a substantially hollow inner space 40 is formed on the inner side A in the tube diameter direction X of the outer periphery 47, and the outer periphery 47 is inserted into the inner space 30 of the outer fitting 3. It will be a thing.

内嵌継手4は、内嵌先端部44から内嵌基端部45までの外周面に、管径方向Xで外側Bに突出して複数の内嵌山部41が形成される。内嵌継手4は、図4に示すように、内嵌山部41が外周面から突出することで、管周方向Wで内嵌山部41に隣り合った内嵌溝部42と、管長方向Yの基端側で内嵌山部41に隣り合った内嵌谷部43とが形成される。   The internally fitting joint 4 protrudes to the outer side B in the tube diameter direction X on the outer peripheral surface from the internally fitting distal end portion 44 to the internally fitting base end portion 45, and a plurality of internally fitted mountain portions 41 are formed. As shown in FIG. 4, the internally fitting joint 4 includes an internally fitting groove portion 42 adjacent to the internally fitting mountain portion 41 in the pipe circumferential direction W, and a tube length direction Y, as the internally fitting mountain portion 41 protrudes from the outer peripheral surface. An inner valley portion 43 adjacent to the inner mountain portion 41 is formed on the base end side.

内嵌継手4は、複数の内嵌山部41が管長方向Yで略一列に配置されて、管長方向Yで4段に亘って、複数の内嵌段部46が形成される。内嵌継手4は、各々の内嵌段部46において、内嵌山部41と内嵌溝部42とが、管周方向Wで交互に形成されるとともに、内嵌山部41と内嵌谷部43とが、管長方向Yに隣り合って形成される。   In the internally fitting joint 4, a plurality of internally fitting mountain parts 41 are arranged in a line in the tube length direction Y, and a plurality of internally fitted step parts 46 are formed in four stages in the tube length direction Y. In the inner fitting joint 4, the inner fitting mountain portions 41 and the inner fitting groove portions 42 are alternately formed in the pipe circumferential direction W in each inner fitting step portion 46, and the inner fitting mountain portion 41 and the inner fitting valley portion. 43 are formed adjacent to each other in the tube length direction Y.

内嵌継手4は、各々の内嵌段部46において、内嵌山部41の板厚よりも内嵌溝部42の板厚が小さく、内嵌山部41の板厚よりも内嵌谷部43の板厚が小さくなる。内嵌継手4は、管長方向Yに隣り合う内嵌段部46において、管長方向Yの先端側の内嵌谷部43の板厚よりも、管長方向Yの基端側の内嵌谷部43の板厚が大きいものとなる。   In the inner fitting joint 4, the thickness of the inner fitting groove portion 42 is smaller than the thickness of the inner fitting mountain portion 41 in each inner fitting step portion 46, and the inner fitting valley portion 43 is smaller than the thickness of the inner fitting mountain portion 41. The plate thickness becomes smaller. The internal fitting joint 4 includes an internal fitting valley portion 43 on the proximal end side in the tube length direction Y with respect to the thickness of the internal fitting valley portion 43 on the distal end side in the tube length direction Y at the internal fitting step portion 46 adjacent in the tube length direction Y. The plate thickness is large.

内嵌継手4は、内嵌基端部45の外面45aが切り欠かれることで、内嵌基端部45に内嵌側キー溝部72が形成される。内嵌継手4は、内嵌基端部45の外面45aから内側Aに所定の深さで切り欠かれて、内嵌溝部42と略同一の管周方向Wの幅で、内嵌側キー溝部72が形成される。内嵌側キー溝部72は、内嵌溝部42と略同一の管周方向Wの位置に形成されるが、これに限らず、内嵌山部41と略同一の位置に形成されてもよい。   In the inner fitting joint 4, an inner fitting side key groove portion 72 is formed in the inner fitting base end portion 45 by cutting out the outer surface 45 a of the inner fitting base end portion 45. The inner fitting joint 4 is notched at a predetermined depth from the outer surface 45a of the inner fitting base end 45 to the inner side A, and has a width in the pipe circumferential direction W substantially the same as the inner fitting groove 42, and has an inner fitting key groove. 72 is formed. The inner fitting side key groove portion 72 is formed at a position in the pipe circumferential direction W substantially the same as the inner fitting groove portion 42, but is not limited thereto, and may be formed at a position substantially the same as the inner fitting mountain portion 41.

内嵌継手4は、内嵌側キー溝部72の管周方向Wの幅が、内嵌溝部42の管周方向Wの幅よりも小さく、又は、大きくてもよい。内嵌側キー溝部72の管周方向Wの幅が、内嵌溝部42の管周方向Wの幅よりも大きい場合は、管周方向Wで内嵌溝部42から内嵌山部41まで跨った位置に内嵌側キー溝部72が形成される。   The inner fitting joint 4 may have a width in the pipe circumferential direction W of the inner fitting side key groove portion 72 smaller or larger than a width of the inner fitting groove portion 42 in the pipe circumferential direction W. When the width of the inner fitting side key groove portion 72 in the pipe circumferential direction W is larger than the width of the inner fitting groove portion 42 in the pipe circumferential direction W, the inner fitting groove portion 42 extends from the inner fitting groove portion 42 to the inner fitting mountain portion 41 in the pipe circumferential direction W. An internal fitting side key groove portion 72 is formed at the position.

内嵌継手4は、管周方向Wで内嵌山部41と交互に形成した複数の内嵌溝部42のうち、一部の内嵌溝部42の基端側のみが切り欠かれて、複数の内嵌溝部42の一部に内嵌側キー溝部72が形成される。また、内嵌継手4は、図5(b)に示すように、管周方向Wで内嵌山部41と交互に形成された複数の内嵌溝部42で、全部の内嵌溝部42の基端側が切り欠かれて、複数の内嵌溝部42の全部に内嵌側キー溝部72が形成されてもよい。   Of the plurality of inner fitting groove portions 42 formed alternately with the inner fitting mountain portions 41 in the pipe circumferential direction W, the inner fitting joint 4 is cut out only at the base end side of some of the inner fitting groove portions 42. An inner fitting side key groove portion 72 is formed in a part of the inner fitting groove portion 42. Further, as shown in FIG. 5 (b), the internally fitting joint 4 is a plurality of internally fitting groove portions 42 formed alternately with the internally fitting mountain portions 41 in the pipe circumferential direction W, and is based on all the internally fitting groove portions 42. The end side may be cut off, and the inner fitting side key groove portion 72 may be formed in all of the plurality of inner fitting groove portions 42.

本発明を適用した鋼管杭継手の矯正構造1は、図6に示すように、内嵌継手4の内空部40に架設されるワイヤー6と、ワイヤー6の端部6aが挿通されるワイヤー挿通孔60と、ワイヤー6の端部6aに設けられる進退部材61とを備える。   As shown in FIG. 6, the steel pipe pile joint straightening structure 1 to which the present invention is applied includes a wire 6 installed in the inner space 40 of the internally fitted joint 4 and a wire insertion through which an end 6 a of the wire 6 is inserted. A hole 60 and an advance / retreat member 61 provided at an end 6 a of the wire 6 are provided.

ワイヤー挿通孔60は、内嵌継手4の外周部47の内嵌基端部45側で、内嵌継手4の外周部47を貫通させて形成される。ワイヤー挿通孔60は、内嵌継手4の外周部47の内嵌基端部45側で、内嵌側キー溝部72が形成された管周方向Wの位置に配置される。   The wire insertion hole 60 is formed by penetrating the outer peripheral portion 47 of the inner fitting joint 4 on the inner fitting base end 45 side of the outer peripheral portion 47 of the inner fitting joint 4. The wire insertion hole 60 is disposed on the inner fitting base end 45 side of the outer peripheral portion 47 of the inner fitting joint 4 at a position in the pipe circumferential direction W where the inner fitting side key groove portion 72 is formed.

ワイヤー挿通孔60は、これに限らず、内嵌継手4の外周部47の内嵌基端部45側で、内嵌側キー溝部72と管周方向Wの位置をずらして配置されてもよい。また、ワイヤー挿通孔60は、内嵌継手4の外周部47の内嵌先端部44側で、内嵌継手4の外周部47を貫通させて形成されてもよい。   The wire insertion hole 60 is not limited to this, and may be disposed on the inner fitting base end 45 side of the outer circumferential portion 47 of the inner fitting joint 4 so as to be shifted from the inner fitting side key groove portion 72 in the pipe circumferential direction W. . Further, the wire insertion hole 60 may be formed by penetrating the outer peripheral portion 47 of the inner fitting joint 4 on the inner fitting tip portion 44 side of the outer peripheral portion 47 of the inner fitting joint 4.

ワイヤー挿通孔60は、図7に示すように、管径方向Xの外側Bから内側Aまで、内嵌継手4の外周部47を貫通させて、略螺旋状にネジ切りして形成される。ワイヤー挿通孔60は、例えば、管周方向Wの複数箇所に形成されて、複数の内嵌側キー溝部72の各々が形成された位置に、内嵌継手4の内空部40で互いに対向するように配置される。   As shown in FIG. 7, the wire insertion hole 60 is formed by threading the outer peripheral portion 47 of the internally fitting joint 4 from the outer side B to the inner side A in the tube diameter direction X and threaded in a substantially spiral shape. For example, the wire insertion holes 60 are formed at a plurality of locations in the pipe circumferential direction W, and are opposed to each other by the inner space 40 of the inner fitting joint 4 at positions where the plurality of inner fitting-side key groove portions 72 are formed. Are arranged as follows.

ワイヤー挿通孔60は、内嵌継手4の内空部40で互いに対向させて配置されることで、一対となって形成されるものとなる。一対のワイヤー挿通孔60は、内嵌継手4の内空部40の中心点を通過する直径方向に配置される。一対のワイヤー挿通孔60は、これに限らず、内嵌継手4の内空部40の中心点を通過しない直線上に配置されてもよい。   The wire insertion holes 60 are formed as a pair by being arranged to face each other in the inner space 40 of the inner fitting joint 4. The pair of wire insertion holes 60 are arranged in the diameter direction passing through the center point of the inner space 40 of the inner fitting joint 4. The pair of wire insertion holes 60 is not limited to this, and may be arranged on a straight line that does not pass through the center point of the inner space 40 of the internally fitting joint 4.

ワイヤー6は、鋼製のワイヤロープ、ケーブル等が用いられる。ワイヤー6は、一対のワイヤー挿通孔60に管径方向Xの両端部6aが挿通されて、内嵌継手4の内空部40の管径方向Xに延びて架設される。ワイヤー6は、ワイヤー挿通孔60に挿通された一方の端部6aがワイヤー留部62で固定される。また、ワイヤー6は、ワイヤー挿通孔60に挿通された他方の端部6aが進退部材61に固定される。   The wire 6 is a steel wire rope, cable, or the like. Both ends 6a of the pipe radial direction X are inserted into the pair of wire insertion holes 60, and the wire 6 is extended and installed in the pipe radial direction X of the inner space 40 of the internal fitting 4. One end portion 6 a of the wire 6 inserted through the wire insertion hole 60 is fixed by the wire retaining portion 62. In addition, the other end 6 a of the wire 6 inserted through the wire insertion hole 60 is fixed to the advance / retreat member 61.

ワイヤー6は、図8(a)に示すように、ワイヤー挿通孔60に挿通された一方の端部6aが、内嵌継手4の外周部47の外側Bでワイヤー留部62に圧着等で固定されることで、管径方向Xに移動しないように拘束される。ワイヤー6は、これに限らず、図8(b)に示すように、内嵌継手4の外周部47に一方の端部6aが直接固定されて、ワイヤー挿通孔60に一方の端部6aを挿通することなく管径方向Xに拘束してもよい。   As shown in FIG. 8A, the wire 6 has one end portion 6a inserted through the wire insertion hole 60 fixed to the wire retaining portion 62 at the outer side B of the outer peripheral portion 47 of the internal fitting 4 by crimping or the like. By doing so, it is restrained not to move in the tube diameter direction X. The wire 6 is not limited to this, and as shown in FIG. 8B, one end 6 a is directly fixed to the outer peripheral portion 47 of the internal fitting 4, and the one end 6 a is connected to the wire insertion hole 60. You may restrain in the pipe radial direction X, without inserting.

ワイヤー6は、図9に示すように、ワイヤー挿通孔60に挿通された他方の端部6aが、内嵌継手4の外周部47の外側Bで、特殊ボルト65等の進退部材61に圧着等で固定される。ワイヤー6は、図9(a)に示すように、特殊ボルト65の軸内部65aに他方の端部6aが挿通されて、特殊ボルト65をワイヤー挿通孔60に螺合することで、他方の端部6aがワイヤー挿通孔60に挿通されるものとなる。   As shown in FIG. 9, the other end 6 a inserted through the wire insertion hole 60 is crimped to the advance / retreat member 61 such as the special bolt 65, etc. It is fixed with. As shown in FIG. 9A, the other end 6a of the wire 6 is inserted into the shaft inside 65a of the special bolt 65, and the special bolt 65 is screwed into the wire insertion hole 60, so that the other end The part 6a is inserted into the wire insertion hole 60.

ワイヤー6は、図9(b)に示すように、特殊ボルト65の軸内部65aに挿通された他方の端部6aを特殊ボルト65から露出させて、特殊ボルト65から露出した端部6aが圧着等で固定される。ワイヤー6は、他方の端部6aを圧着等で固定したままの状態で、ワイヤー挿通孔60に螺合された特殊ボルト65を管径方向Xに進退移動させることで、特殊ボルト65とともに他方の端部6aが管径方向Xに進退移動するものとなる。   As shown in FIG. 9B, the wire 6 has the other end 6 a inserted through the shaft inside 65 a of the special bolt 65 exposed from the special bolt 65, and the end 6 a exposed from the special bolt 65 is crimped. Fixed with etc. With the other end 6a being fixed by crimping or the like, the wire 6 is moved forward and backward in the tube diameter direction X with the special bolt 65 screwed into the wire insertion hole 60. The end 6a moves forward and backward in the tube radial direction X.

ワイヤー6は、ワイヤー挿通孔60に挿通された他方の端部6aを、特殊ボルト65により進退移動させるものだけでなく、図10に示すように、一体型ボルト66又はワイヤロープ緊張器67等の進退部材61により進退移動させるものでもよい。   The wire 6 is not only for moving the other end 6a inserted through the wire insertion hole 60 forward and backward by a special bolt 65, but also as shown in FIG. 10, such as an integrated bolt 66 or a wire rope tensioner 67. It may be moved forward and backward by the advance / retreat member 61.

ワイヤー6は、例えば、図10(a)に示すように、進退部材61として一体型ボルト66が用いられることで、一体型ボルト66と他方の端部6aとが一体化するように互いに圧着等で固定される。ワイヤー6は、他方の端部6aと一体化した一体型ボルト66をワイヤー挿通孔60に螺合させて挿通することで、一体型ボルト66とともに他方の端部6aがワイヤー挿通孔60に挿通されるものとなる。   For example, as shown in FIG. 10A, the wire 6 uses an integral bolt 66 as the advance / retreat member 61, so that the integral bolt 66 and the other end 6 a are integrated with each other. It is fixed with. The wire 6 is inserted into the wire insertion hole 60 together with the integrated bolt 66 by screwing and inserting the integrated bolt 66 integrated with the other end 6a into the wire insertion hole 60. Will be.

ワイヤー6は、他方の端部6aを一体型ボルト66と一体化して、ワイヤー挿通孔60に螺合された一体型ボルト66を管径方向Xに進退移動させることで、一体型ボルト66とともに他方の端部6aが管径方向Xに進退移動するものとなる。ワイヤー6は、図10(b)に示すように、進退部材61としてワイヤロープ緊張器67が用いられることで、ワイヤロープ緊張器67により他方の端部6aを管径方向Xに進退移動させてもよい。   The other end 6a of the wire 6 is integrated with the integrated bolt 66, and the integrated bolt 66 screwed into the wire insertion hole 60 is moved forward and backward in the tube diameter direction X, so that the other end together with the integrated bolt 66 is provided. The end portion 6a is moved forward and backward in the tube radial direction X. 10B, the wire rope tensioner 67 is used as the advance / retreat member 61 so that the other end 6a is moved forward and backward in the tube diameter direction X by the wire rope tensioner 67. Also good.

ワイヤー6は、図11に示すように、ワイヤー挿通孔60に挿通された何れか一方又は両方の端部6aを、進退部材61により管径方向Xに進退移動させることで、管径方向Xの緊張力Tが導入又は緩和されるものとなる。ワイヤー6は、図11(a)に示すように、管径方向Xの何れかの端部6aのみに進退部材61が設けられるだけでなく、図11(b)に示すように、管径方向Xの両端部6aに進退部材61が設けられてもよい。   As shown in FIG. 11, the wire 6 is moved in the tube radial direction X by moving the one or both ends 6 a inserted through the wire insertion hole 60 in the tube radial direction X by the advance / retreat member 61. The tension T is introduced or alleviated. As shown in FIG. 11 (a), the wire 6 is not only provided with an advancing / retracting member 61 only at one end 6a in the tube radial direction X, but also in the tube radial direction as shown in FIG. 11 (b). Advancement / retraction members 61 may be provided at both ends 6a of X.

本発明を適用した鋼管杭継手の矯正構造1は、図12に示すように、内嵌継手4の内空部40に架設されるワイヤー6に、管径方向Xの緊張力Tが導入又は緩和されることで、内嵌継手4の外周部47が管周方向Wに弾性変形するものとなる。   In the straightening structure 1 of a steel pipe pile joint to which the present invention is applied, as shown in FIG. 12, a tension force T in the pipe radial direction X is introduced or relaxed in the wire 6 installed in the inner space 40 of the internally fitted joint 4. As a result, the outer peripheral portion 47 of the internal fitting 4 is elastically deformed in the pipe circumferential direction W.

本発明を適用した鋼管杭継手の矯正構造1は、図12(a)に示すように、特に、複数のワイヤー6が内嵌継手4の内空部40に架設されて、各々のワイヤー6に導入又は緩和される緊張力Tを調整することで、図12(b)に示すように、内嵌継手4の外周部47を管周方向Wで自在に弾性変形させるものとなる。   As shown in FIG. 12A, the steel pipe pile joint straightening structure 1 to which the present invention is applied has a plurality of wires 6 installed in the inner space 40 of the internally fitted joint 4. By adjusting the tension force T introduced or relaxed, the outer peripheral portion 47 of the internal fitting 4 is elastically deformed freely in the pipe circumferential direction W as shown in FIG.

本発明を適用した鋼管杭継手の矯正方法は、図13〜図20に示すように、管長方向Yで外嵌継手3と内嵌継手4とが連結される複数の鋼管杭2の継手部分Fを矯正して、第1鋼管杭21と第2鋼管杭22とを管長方向Yで互いに連結するために用いられる。   The straightening method of the steel pipe pile joint to which the present invention is applied is a joint portion F of a plurality of steel pipe piles 2 in which the outer fitting joint 3 and the inner fitting joint 4 are connected in the pipe length direction Y as shown in FIGS. Is used to connect the first steel pipe pile 21 and the second steel pipe pile 22 to each other in the pipe length direction Y.

本発明を適用した鋼管杭継手の矯正方法は、複数の鋼管杭2の継手部分Fで、内嵌継手4の内空部40にワイヤー6を架設する架設工程と、内嵌継手4を管周方向Wに弾性変形させる矯正工程とを備える。本発明を適用した鋼管杭継手の矯正方法は、必要に応じて、内嵌継手4をあらためて変形させる再矯正工程を備える。   The straightening method of the steel pipe pile joint to which the present invention is applied includes an erection step of laying the wire 6 in the inner space 40 of the inner fitting joint 4 at the joint portions F of the plurality of steel pipe piles 2, and the inner fitting joint 4 around the pipe circumference. A correction step of elastically deforming in the direction W. The straightening method of the steel pipe pile joint to which the present invention is applied includes a re-correction step of deforming the internally fitted joint 4 as needed.

架設工程では、図13に示すように、最初に、内嵌継手4と外嵌継手3とが連結される前の段階で、内嵌継手4を外嵌継手3に挿入する前に、内嵌継手4の外周部47で内嵌側キー溝部72等に形成されたワイヤー挿通孔60に、ワイヤー6の端部6aを挿通する。このとき、架設工程では、必要に応じて、図14に示すように、ワイヤー6の管径方向Xの両端部6aが一対のワイヤー挿通孔60に挿通される。   In the erection process, as shown in FIG. 13, first, before the inner fitting joint 4 and the outer fitting joint 3 are connected, before the inner fitting joint 4 is inserted into the outer fitting joint 3, the inner fitting is performed. The end portion 6a of the wire 6 is inserted into the wire insertion hole 60 formed in the inner fitting side key groove portion 72 and the like at the outer peripheral portion 47 of the joint 4. At this time, in the erection process, as shown in FIG. 14, both ends 6 a of the wire 6 in the tube radial direction X are inserted into the pair of wire insertion holes 60 as necessary.

架設工程では、次に、ワイヤー6の一方の端部6aがワイヤー留部62で固定されるとともに、ワイヤー挿通孔60に挿通された他方の端部6aが進退部材61に固定される。このとき、架設工程では、例えば、内嵌継手4の内空部40にワイヤー6が撓まない状態で架設されて、進退部材61として用いられる特殊ボルト65等が、管径方向Xの内側A及び外側Bの何れにも進退移動できる位置でワイヤー挿通孔60に螺合される。   Next, in the erection process, one end portion 6 a of the wire 6 is fixed by the wire retaining portion 62, and the other end portion 6 a inserted through the wire insertion hole 60 is fixed to the advance / retreat member 61. At this time, in the erection process, for example, the special bolt 65 or the like that is erected in the inner space 40 of the inner fitting joint 4 in a state where the wire 6 is not bent and used as the advancing / retreating member 61 is provided on the inner side A of the tube diameter direction X. And the wire insertion hole 60 at a position where it can move forward and backward.

矯正工程では、次に、図15に示すように、ワイヤー挿通孔60に挿通されたワイヤー6の端部6aを、特殊ボルト65等の進退部材61により、管径方向Xの外側Bに向けて移動させる。このとき、矯正工程では、例えば、特殊ボルト65のボルト頭部の六角穴に取り付けられた六角レンチ69等を回転させることで、ワイヤー挿通孔60に螺合された特殊ボルト65が、管径方向Xの外側Bに向けて螺旋状に回転移動する。   In the correction process, next, as shown in FIG. 15, the end portion 6 a of the wire 6 inserted through the wire insertion hole 60 is directed toward the outer side B in the tube radial direction X by the advance / retreat member 61 such as a special bolt 65. Move. At this time, in the correction process, for example, the special bolt 65 screwed into the wire insertion hole 60 is rotated in the pipe radial direction by rotating a hexagon wrench 69 or the like attached to the hexagon hole of the bolt head of the special bolt 65. Rotate and move toward the outside B of X in a spiral.

矯正工程では、ワイヤー6の一方の端部6aがワイヤー留部62等で固定されるとともに、ワイヤー6の他方の端部6aが外側Bに向けて移動することで、内嵌継手4の内空部40に架設されたワイヤー6に緊張力Tが導入される。   In the correction process, one end 6a of the wire 6 is fixed by the wire retaining portion 62 or the like, and the other end 6a of the wire 6 moves toward the outer side B. A tension force T is introduced into the wire 6 installed on the portion 40.

矯正工程では、図16に示すように、必要に応じて、特殊ボルト65等の進退部材61を内側Aに向けて螺旋状に回転移動等させることで、ワイヤー6に導入された緊張力Tを緩和させて、ワイヤー6に導入又は緩和される緊張力Tを調整することもできる。   In the correction process, as shown in FIG. 16, the tension force T introduced into the wire 6 is increased by rotating the advance / retreat member 61 such as the special bolt 65 spirally toward the inner side A as necessary. It is also possible to adjust the tension T that is relaxed and introduced or relaxed to the wire 6.

矯正工程では、最後に、ワイヤー6に管径方向Xの緊張力Tが導入又は緩和されることで、図17に示すように、内嵌継手4を管周方向Wに弾性変形させながら、内嵌継手4を外嵌継手3に挿入する。矯正工程では、図12に示すように、特に、複数のワイヤー6が内嵌継手4の内空部40に架設されるとともに、各々のワイヤー6の緊張力Tを調整することで、内嵌継手4の外周部47を管周方向Wで自在に弾性変形させるものとなる。   In the straightening step, finally, the tension force T in the tube radial direction X is introduced or relaxed in the wire 6 so that the inner fitting joint 4 is elastically deformed in the tube circumferential direction W as shown in FIG. The fitting joint 4 is inserted into the outer fitting joint 3. In the straightening process, as shown in FIG. 12, in particular, the plurality of wires 6 are installed in the inner space 40 of the inner fitting joint 4, and the tension force T of each wire 6 is adjusted, whereby the inner fitting joint. The outer peripheral part 47 of 4 is elastically deformed freely in the pipe circumferential direction W.

ここで、複数の鋼管杭2の継手部分Fでは、外嵌継手3に内嵌継手4を挿入するときに、図18に示すように、各々の外嵌段部36及び内嵌段部46において、外嵌山部31が内嵌溝部42を通過するとともに、内嵌山部41が外嵌溝部32を通過する。   Here, in the joint portion F of the plurality of steel pipe piles 2, when the inner fitting joint 4 is inserted into the outer fitting joint 3, as shown in FIG. 18, in each outer fitting step portion 36 and inner fitting step portion 46. The outer fitting mountain portion 31 passes through the inner fitting groove portion 42 and the inner fitting mountain portion 41 passes through the outer fitting groove portion 32.

また、複数の鋼管杭2の継手部分Fでは、図19に示すように、内嵌継手4を外嵌継手3に挿入した状態で、第1鋼管杭21と第2鋼管杭22とを相対回転させることで、外嵌継手3と内嵌継手4とを管周方向Wに相対回転させるものとなる。   Moreover, in the joint part F of the several steel pipe pile 2, as shown in FIG. 19, the 1st steel pipe pile 21 and the 2nd steel pipe pile 22 are relatively rotated in the state which inserted the internal fitting joint 4 in the external fitting joint 3. As shown in FIG. By doing so, the outer fitting joint 3 and the inner fitting joint 4 are relatively rotated in the pipe circumferential direction W.

本発明を適用した鋼管杭継手の矯正方法は、内嵌継手4を外嵌継手3に挿入した状態で、再矯正工程により内嵌継手4を管周方向Wに変形させながら、外嵌継手3と内嵌継手4とを管周方向Wに相対回転させるものとなる。   The steel pipe pile joint correction method to which the present invention is applied is the state in which the inner fitting joint 4 is inserted into the outer fitting joint 3 while the inner fitting joint 4 is deformed in the pipe circumferential direction W by a re-correction process. And the internal fitting 4 are rotated relative to each other in the pipe circumferential direction W.

再矯正工程では、図12に示すように、特に、複数のワイヤー6が内嵌継手4の内空部40に架設されるとともに、各々のワイヤー6の緊張力Tを調整することで、矯正工程とは異なる態様で、内嵌継手4の外周部47を管周方向Wに変形させる。   In the re-correction process, as shown in FIG. 12, in particular, a plurality of wires 6 are installed in the inner space 40 of the internal fitting 4, and the tension T of each wire 6 is adjusted, thereby correcting the process. The outer peripheral portion 47 of the internal fitting 4 is deformed in the pipe circumferential direction W in a different manner.

ここで、例えば、外嵌継手3の外周部37が略楕円形状に変形している場合等においては、図20(a)に示すように、矯正工程で内嵌継手4の外周部47を略楕円形状に弾性変形させることで、内嵌継手4の外周部47の外形が外嵌継手3の内空部30と略同一となり、内嵌継手4を外嵌継手3に挿入できるものとなる。   Here, for example, in the case where the outer peripheral portion 37 of the outer fitting joint 3 is deformed into a substantially elliptical shape, the outer peripheral portion 47 of the inner fitting joint 4 is substantially omitted in the correction process as shown in FIG. By elastically deforming into an elliptical shape, the outer shape of the outer peripheral portion 47 of the inner fitting joint 4 becomes substantially the same as the inner space 30 of the outer fitting joint 3, and the inner fitting joint 4 can be inserted into the outer fitting joint 3.

このとき、内嵌継手4の外周部47が略楕円形状に弾性変形した状態のままでは、外嵌継手3と内嵌継手4とが管周方向Wに相対回転できないため、図20(b)に示すように、ワイヤー6に矯正工程で導入された緊張力Tを緩和させる。   At this time, since the outer fitting joint 3 and the inner fitting joint 4 cannot be rotated relative to each other in the pipe circumferential direction W with the outer peripheral portion 47 of the inner fitting joint 4 elastically deformed into a substantially elliptical shape, FIG. As shown in FIG. 2, the tension force T introduced into the wire 6 in the correction process is relaxed.

さらに、矯正工程で緊張力Tが導入されたワイヤー6とは別のワイヤー6に緊張力Tを導入することで、外嵌継手3の外周部37に沿って内嵌継手4の外周部47を管周方向Wで自在に変形させながら、外嵌継手3と内嵌継手4とを管周方向Wに相対回転させる。   Furthermore, the outer peripheral portion 47 of the inner fitting joint 4 is moved along the outer peripheral portion 37 of the outer fitting joint 3 by introducing the tensile force T into the wire 6 different from the wire 6 into which the tensile force T has been introduced in the correction process. The outer fitting joint 3 and the inner fitting joint 4 are relatively rotated in the pipe circumferential direction W while being freely deformed in the pipe circumferential direction W.

このとき、再矯正工程では、ワイヤー6に導入された緊張力Tを調整して、内嵌継手4の外周部47を弾性変形した状態から元の形状に復元等させながら、内嵌継手4の外周部47を外嵌継手3の外周部37に沿って自在に変形させることで、外嵌継手3と内嵌継手4とを相対回転させて、内嵌継手4と外嵌継手3とが連結されるものとなる。   At this time, in the re-correction step, the tension force T introduced into the wire 6 is adjusted, and the outer peripheral portion 47 of the inner fitting joint 4 is restored from its elastically deformed state to the original shape. By freely deforming the outer peripheral portion 47 along the outer peripheral portion 37 of the outer fitting joint 3, the outer fitting joint 3 and the inner fitting joint 4 are relatively rotated, and the inner fitting joint 4 and the outer fitting joint 3 are connected. Will be.

複数の鋼管杭2の継手部分Fでは、図19に示すように、外嵌側キー溝部71と内嵌側キー溝部72とが互いに略同一の管周方向Wの位置に形成されるため、内嵌継手4と外嵌継手3とが連結された状態で、外嵌側キー溝部71と内嵌側キー溝部72とを管長方向Yに連続させたキー溝部7が形成される。   In the joint portion F of the plurality of steel pipe piles 2, as shown in FIG. 19, the outer fitting side key groove portion 71 and the inner fitting side key groove portion 72 are formed at substantially the same position in the pipe circumferential direction W. In a state where the fitting joint 4 and the outer fitting joint 3 are connected, a key groove portion 7 is formed in which the outer fitting side key groove portion 71 and the inner fitting side key groove portion 72 are continuous in the pipe length direction Y.

複数の鋼管杭2の継手部分Fでは、図17に示すワイヤー6、進退部材61及びワイヤー留部62等を撤去した後、管長方向Yに延びるキー部材5が、外嵌側キー溝部71から内嵌側キー溝部72まで架設される。キー部材5は、図21に示すように、管径方向Xに貫通させてキー穴部50が形成されるとともに、キー穴部50とワイヤー挿通孔60との位置を合わせて、キー穴部50からワイヤー挿通孔60まで管径方向Xに挿通される六角ボルト等の軸構造55で、キー溝部7に嵌め込まれて固定される。   In the joint portion F of the plurality of steel pipe piles 2, after removing the wire 6, the advance / retreat member 61, the wire retaining portion 62 and the like shown in FIG. 17, the key member 5 extending in the tube length direction Y It is constructed up to the fitting side key groove portion 72. As shown in FIG. 21, the key member 5 is penetrated in the tube diameter direction X to form a key hole portion 50, and the key hole portion 50 and the wire insertion hole 60 are aligned to match the key hole portion 50. The shaft structure 55 such as a hexagon bolt that is inserted in the tube diameter direction X from the wire insertion hole 60 to the wire insertion hole 60 is fitted into the key groove portion 7 and fixed.

複数の鋼管杭2の継手部分Fでは、図22に示すように、複数の鋼管杭2を回転圧入等させるときに、キー部材5がキー溝部7に架設されるため、キー部材5の一方側面51が外嵌側キー溝部71の側面71aに当接されて、また、キー部材5の他方側面52が内嵌側キー溝部72の側面72aに当接されることで、第1鋼管杭21と第2鋼管杭22とが一体となって正回転又は逆回転に回転圧入されるものとなる。   In the joint portion F of the plurality of steel pipe piles 2, as shown in FIG. 22, when the plurality of steel pipe piles 2 are rotationally press-fitted or the like, the key member 5 is installed in the key groove portion 7. 51 is brought into contact with the side surface 71a of the outer fitting side key groove portion 71, and the other side surface 52 of the key member 5 is brought into contact with the side surface 72a of the inner fitting side key groove portion 72. The second steel pipe pile 22 and the second steel pipe pile 22 are rotationally press-fitted in the forward rotation or the reverse rotation.

複数の鋼管杭2の継手部分Fでは、外嵌継手3及び内嵌継手4の工場等での溶接による取付けや、第1鋼管杭21及び第2鋼管杭22を運搬するときの吊上げ荷重、衝撃力等により、外嵌継手3及び内嵌継手4にラッパ状又は略楕円形状等の変形が生じる。このとき、複数の鋼管杭2の継手部分Fでは、ラッパ状又は略楕円形状等の変形により、外嵌継手3及び内嵌継手4に競りが生じて連結できないおそれがあり、複数の鋼管杭2の継手部分Fの矯正が必要となる。   In the joint portion F of the plurality of steel pipe piles 2, the external fitting joint 3 and the internal fitting joint 4 are attached by welding in a factory, and the lifting load and impact when the first steel pipe pile 21 and the second steel pipe pile 22 are transported. Due to the force or the like, the outer fitting joint 3 and the inner fitting joint 4 are deformed in a trumpet shape or a substantially elliptic shape. At this time, in the joint portions F of the plurality of steel pipe piles 2, there is a fear that the outer fitting joint 3 and the inner fitting joint 4 may be connected due to deformation such as a trumpet shape or a substantially elliptic shape, and the plurality of steel pipe piles 2 may not be connected. It is necessary to correct the joint portion F.

本発明を適用した鋼管杭継手の矯正構造1は、図17に示すように、ワイヤー6、進退部材61及びワイヤー留部62等の単純な部材を用いるのみで、人力等による容易な作業で複数の鋼管杭2の継手部分Fを矯正することができるため、安価かつ簡便に鋼管杭2の継手部分Fを矯正して連結することで、工期やコストを削減することが可能となる。   As shown in FIG. 17, the straightening structure 1 of the steel pipe pile joint to which the present invention is applied is a simple work such as a wire 6, an advancing / retracting member 61, a wire retaining portion 62, etc. Since the joint portion F of the steel pipe pile 2 can be straightened, it is possible to reduce the construction period and cost by straightening and connecting the joint portion F of the steel pipe pile 2 inexpensively and simply.

本発明を適用した鋼管杭継手の矯正構造1は、特に、図20に示すように、内嵌継手4の内空部40のワイヤー6に緊張力Tが導入又は緩和されることで、内嵌継手4の外周部47が弾性変形するものとなる。このとき、本発明を適用した鋼管杭継手の矯正構造1は、内嵌継手4の外周部47が弾性変形することで、内嵌継手4の塑性変形を最小限に抑制して、内嵌継手4の内嵌山部41と外嵌継手3の外嵌山部31とが確実に噛み合うものとなり、内嵌継手4の過度な変形による荷重伝達性能の低下を回避することが可能となる。   The steel pipe pile joint straightening structure 1 to which the present invention is applied, in particular, as shown in FIG. 20, the tension T is introduced or relaxed in the wire 6 in the inner space 40 of the inner fitting joint 4, so that the inner fitting is achieved. The outer peripheral portion 47 of the joint 4 is elastically deformed. At this time, the straightening structure 1 of the steel pipe pile joint to which the present invention is applied is such that the outer peripheral portion 47 of the internally fitted joint 4 is elastically deformed, thereby suppressing the plastic deformation of the internally fitted joint 4 to the minimum. 4 and the outer fitting mountain portion 31 of the outer fitting joint 3 are surely engaged with each other, and it is possible to avoid a decrease in load transmission performance due to excessive deformation of the inner fitting joint 4.

本発明を適用した鋼管杭継手の矯正構造1は、図17に示すワイヤー6、進退部材61及びワイヤー留部62等を撤去した後、図21に示すように、キー部材5がキー溝部7に嵌め込まれて、第1鋼管杭21と第2鋼管杭22とが一体となって地盤内に埋設されるため、内嵌継手4の内空部40にワイヤー6を残さないことで土砂から受ける抵抗を低減させて、複数の鋼管杭2の円滑な施工を実現することが可能となる。   In the straightening structure 1 of the steel pipe pile joint to which the present invention is applied, after removing the wire 6, the advance / retreat member 61, the wire retaining portion 62, and the like shown in FIG. 17, the key member 5 becomes the key groove portion 7 as shown in FIG. 21. Since it is inserted and the 1st steel pipe pile 21 and the 2nd steel pipe pile 22 are unitedly embed | buried in the ground, the resistance received from earth and sand by not leaving the wire 6 in the inner space 40 of the internal fitting 4 Thus, it is possible to realize smooth construction of the plurality of steel pipe piles 2.

本発明を適用した鋼管杭継手の矯正構造1は、ワイヤー6の端部6aを挿通するためのワイヤー挿通孔60を利用して、ボルト等の軸構造55でキー部材5をキー溝部7に固定して嵌め込むことができる。これにより、本発明を適用した鋼管杭継手の矯正構造1は、内嵌継手4の外周部47に必要以上の削孔をさせないものとして、内嵌継手4の強度低下を回避しながら、複数の鋼管杭2の継手部分Fを矯正することが可能となる。   In the steel pipe pile joint straightening structure 1 to which the present invention is applied, the key member 5 is fixed to the key groove portion 7 with a shaft structure 55 such as a bolt using the wire insertion hole 60 for inserting the end portion 6 a of the wire 6. And can be fitted. Thereby, the straightening structure 1 of the steel pipe pile joint to which the present invention is applied assumes that the outer peripheral portion 47 of the internally fitted joint 4 is not drilled more than necessary, while avoiding a decrease in the strength of the internally fitted joint 4. It becomes possible to correct the joint portion F of the steel pipe pile 2.

本発明を適用した鋼管杭継手の矯正方法は、図17に示すように、架設工程でワイヤー6、進退部材61及びワイヤー留部62等の単純な部材を用いて、また、矯正工程で人力等による容易な作業で複数の鋼管杭2の継手部分Fを矯正することができるため、鋼管杭2の継手部分Fを矯正して連結するための工期やコストを削減することが可能となるだけでなく、内嵌継手4の弾性変形により、内嵌継手4の塑性変形を最小限に抑制して、内嵌継手4の過度な変形による荷重伝達性能の低下を回避することが可能となる。   As shown in FIG. 17, the straightening method of the steel pipe pile joint to which the present invention is applied uses simple members such as the wire 6, the advancing / retreating member 61 and the wire retaining portion 62 in the erection process, and the human power etc. in the straightening process. Since it is possible to correct the joint portions F of the plurality of steel pipe piles 2 with an easy operation, it is only possible to reduce the work period and cost for correcting and connecting the joint portions F of the steel pipe piles 2 In addition, the elastic deformation of the internal fitting joint 4 suppresses the plastic deformation of the internal fitting joint 4 to the minimum, and it is possible to avoid a decrease in load transmission performance due to excessive deformation of the internal fitting joint 4.

本発明を適用した鋼管杭継手の矯正方法は、特に、図20に示すように、内嵌継手4を外嵌継手3に挿入してから、再矯正工程でワイヤー6に導入された緊張力Tを調整して、内嵌継手4の外周部47を管周方向Wで自在に変形させることで、外嵌継手3と内嵌継手4とを管周方向Wに相対回転させることができる。これにより、本発明を適用した鋼管杭継手の矯正方法は、外嵌継手3と内嵌継手4とを相対回転させて連結させるギア式の継手部分Fにおいても、工期やコストを削減させるとともに内嵌継手4の荷重伝達性能の維持を図りながら、継手部分Fを矯正することが可能となる。   As shown in FIG. 20, the steel pipe pile joint correction method to which the present invention is applied has a tension force T introduced into the wire 6 in the re-correction process after the inner fitting joint 4 is inserted into the outer fitting joint 3. By adjusting the outer peripheral portion 47 of the inner fitting joint 4 freely in the pipe circumferential direction W, the outer fitting joint 3 and the inner fitting joint 4 can be relatively rotated in the pipe circumferential direction W. Thereby, the straightening method of the steel pipe pile joint to which the present invention is applied can reduce the construction period and cost in the gear-type joint portion F in which the outer fitting joint 3 and the inner fitting joint 4 are connected by relative rotation. The joint portion F can be corrected while maintaining the load transmission performance of the fitting joint 4.

本発明を適用した鋼管杭継手の矯正構造1は、特に、図13に示すように、内嵌継手4を外嵌継手3に挿入してから、外嵌継手3と内嵌継手4とを管周方向Wに相対回転させることで、外嵌継手3と内嵌継手4とが連結されるギア式の継手部分Fに用いられる。   The steel pipe pile joint straightening structure 1 to which the present invention is applied, in particular, as shown in FIG. 13, after the inner fitting joint 4 is inserted into the outer fitting joint 3, the outer fitting joint 3 and the inner fitting joint 4 are connected to the pipe. By being relatively rotated in the circumferential direction W, it is used for a gear-type joint portion F in which the outer fitting joint 3 and the inner fitting joint 4 are connected.

また、本発明を適用した鋼管杭継手の矯正構造1は、図23に示すように、外嵌継手3と内嵌継手4とを相対回転させることなく、内嵌継手4を外嵌継手3に管長方向Yに直進させることで、外嵌継手3と内嵌継手4とが連結される継手部分Fに用いられてもよい。   Moreover, the straightening structure 1 of the steel pipe pile joint to which the present invention is applied, as shown in FIG. 23, the inner fitting joint 4 is changed to the outer fitting joint 3 without rotating the outer fitting joint 3 and the inner fitting joint 4 relative to each other. By moving straight in the pipe length direction Y, the joint portion F to which the outer fitting joint 3 and the inner fitting joint 4 are connected may be used.

さらに、本発明を適用した鋼管杭継手の矯正構造1は、図24に示すように、外嵌継手3の螺旋状の外嵌突状部38と内嵌継手4の螺旋状の内嵌溝状部49とを螺合させることで、外嵌継手3と内嵌継手4とが連結されるネジ式の継手部分Fに用いられてもよい。   Furthermore, the steel pipe pile joint straightening structure 1 to which the present invention is applied includes a spiral outer fitting protrusion 38 of the outer fitting joint 3 and a helical inner fitting groove shape of the inner fitting 4 as shown in FIG. It may be used for the threaded joint portion F to which the outer fitting joint 3 and the inner fitting joint 4 are connected by screwing the portion 49.

以上、本発明の実施形態の例について詳細に説明したが、上述した実施形態は、何れも本発明を実施するにあたっての具体化の例を示したものに過ぎず、これらによって本発明の技術的範囲が限定的に解釈されてはならない。   As mentioned above, although the example of embodiment of this invention was demonstrated in detail, all the embodiment mentioned above showed only the example of actualization in implementing this invention, and these are the technical aspects of this invention. The range should not be interpreted in a limited way.

例えば、複数の鋼管杭2の継手部分Fでは、第1鋼管杭21に内嵌継手4を取り付けるとともに、第2鋼管杭22に外嵌継手3を取り付けるものでもよい。また、複数の鋼管杭2の継手部分Fでは、第1鋼管杭21又は第2鋼管杭22を切削等することで、第1鋼管杭21又は第2鋼管杭22そのものに外嵌継手3又は内嵌継手4が設けられてもよい。   For example, in the joint portion F of the plurality of steel pipe piles 2, the inner fitting joint 4 may be attached to the first steel pipe pile 21 and the outer fitting joint 3 may be attached to the second steel pipe pile 22. Moreover, in the joint part F of the some steel pipe pile 2, the 1st steel pipe pile 21 or the 2nd steel pipe pile 22 is cut by the 1st steel pipe pile 21 or the 2nd steel pipe pile 22 itself, and the external fitting joint 3 or inside A fitting joint 4 may be provided.

1 :鋼管杭継手の矯正構造
2 :鋼管杭
21 :第1鋼管杭
22 :第2鋼管杭
3 :外嵌継手
30 :外嵌継手の内空部
31 :外嵌山部
32 :外嵌溝部
33 :外嵌谷部
34 :外嵌先端部
34a :外嵌先端部の外面
35 :外嵌基端部
36 :外嵌段部
37 :外嵌継手の外周部
38 :外嵌突状部
4 :内嵌継手
40 :内嵌継手の内空部
41 :内嵌山部
42 :内嵌溝部
43 :内嵌谷部
44 :内嵌先端部
45 :内嵌基端部
45a :内嵌基端部の外面
46 :内嵌段部
47 :内嵌継手の外周部
49 :内嵌溝状部
5 :キー部材
50 :キー穴部
51 :一方側面
52 :他方側面
55 :軸構造
6 :ワイヤー
6a :端部
60 :ワイヤー挿通孔
61 :進退部材
62 :ワイヤー留部
65 :特殊ボルト
65a :軸内部
66 :一体型ボルト
67 :ワイヤロープ緊張器
69 :六角レンチ
7 :キー溝部
71 :外嵌側キー溝部
71a :外嵌側キー溝部の側面
72 :内嵌側キー溝部
72a :内嵌側キー溝部の側面
8 :地盤内
A :内側
B :外側
F :継手部分
W :管周方向
X :管径方向
Y :管長方向
1: Straightening structure of steel pipe pile joint 2: Steel pipe pile 21: First steel pipe pile 22: Second steel pipe pile 3: Outer fitting joint 30: Inner space part 31 of outer fitting joint: Outer fitting mountain part 32: Outer fitting groove part 33 : Outer fitting valley 34: Outer fitting tip 34a: Outer fitting tip outer surface 35: Outer fitting base end 36: Outer fitting step 37: Outer fitting outer periphery 38: Outer fitting protrusion 4: Inner Fitting joint 40: Inner hollow portion 41 of inner fitting joint: Inner fitting mountain portion 42: Inner fitting groove portion 43: Inner fitting trough portion 44: Inner fitting distal end portion 45: Inner fitting proximal end portion 45a: Outer surface of inner fitting proximal end portion 46: Inner fitting step portion 47: Outer fitting portion 49 of inner fitting joint: Inner fitting groove-like portion 5: Key member 50: Key hole portion 51: One side surface 52: Other side surface 55: Shaft structure 6: Wire 6a: End portion 60 : Wire insertion hole 61: Advance / retract member 62: Wire retaining portion 65: Special bolt 65a: Shaft inside 66: Integrated bolt 67: Wire rope Tensioner 69: Hexagon wrench 7: Key groove portion 71: Outer fitting side key groove portion 71a: Side surface of outer fitting side key groove portion 72: Inner fitting side key groove portion 72a: Side surface of inner fitting side key groove portion 8: Inside ground A: Inside B : Outer side F: Joint part W: Pipe circumferential direction X: Pipe diameter direction Y: Pipe length direction

Claims (5)

複数の鋼管杭の継手部分を矯正して連結する鋼管杭継手の矯正構造であって、
管長方向で外嵌継手と内嵌継手とが連結される継手部分で、前記外嵌継手に挿入される前記内嵌継手の内空部に架設されるワイヤーと、前記内嵌継手の外周部を貫通させて形成されたワイヤー挿通孔と、前記ワイヤーの端部に設けられる進退部材とを備え、
前記ワイヤーは、前記ワイヤー挿通孔に前記端部が挿通されて、前記ワイヤー挿通孔に挿通された前記端部を、前記進退部材により管径方向に進退移動させることで、管径方向の緊張力が導入又は緩和されること
を特徴とする鋼管杭継手の矯正構造。
A steel pipe pile joint straightening structure that straightens and connects joints of a plurality of steel pipe piles,
A joint portion where the outer fitting joint and the inner fitting joint are connected in the pipe length direction, and a wire constructed in an inner space of the inner fitting joint inserted into the outer fitting joint, and an outer peripheral portion of the inner fitting joint. A wire insertion hole formed by penetrating, and an advancing and retracting member provided at an end of the wire,
The wire has the end portion inserted through the wire insertion hole, and the end portion inserted through the wire insertion hole is moved forward and backward in the tube radial direction by the advance / retreat member, so that the tensile force in the tube diameter direction is increased. Steel pipe pile joint straightening structure characterized in that is introduced or relaxed.
前記ワイヤーは、一対の前記ワイヤー挿通孔に両端部が挿通されて、一方の前記端部がワイヤー留部で固定されるとともに、他方の前記端部が前記進退部材に固定されて、前記ワイヤー挿通孔に螺合された前記進退部材を管径方向に進退移動させることで、前記進退部材とともに前記端部が管径方向に進退移動するものとなること
を特徴とする請求項1記載の鋼管杭継手の矯正構造。
Both ends of the wire are inserted into a pair of the wire insertion holes, one end is fixed by a wire retaining portion, and the other end is fixed to the advance / retreat member, and the wire insertion The steel pipe pile according to claim 1, wherein the advancing / retreating member screwed into the hole is moved forward / backward in the pipe radial direction so that the end part moves forward / backward in the pipe radial direction together with the advance / retreat member. Straightening structure of the joint.
前記外嵌継手は、管長方向の先端側に設けられる外嵌先端部を有して、前記外嵌先端部の外面が切り欠かれることで、前記外嵌先端部に外嵌側キー溝部が形成されて、
前記内嵌継手は、管長方向の基端側に設けられる内嵌基端部を有して、前記内嵌基端部の外面が切り欠かれることで、前記内嵌基端部に内嵌側キー溝部が形成されて、
前記外嵌継手及び前記内嵌継手は、管長方向で互いに連結した状態で、前記外嵌側キー溝部と前記内嵌側キー溝部とを管長方向に連続させたキー溝部が形成されて、管長方向に延びるキー部材が、前記外嵌側キー溝部から前記内嵌側キー溝部まで架設されて、
前記キー部材は、管径方向に貫通させてキー穴部が形成されて、前記キー穴部から前記ワイヤー挿通孔まで挿通される軸構造で、前記キー溝部に嵌め込まれて固定されること
を特徴とする請求項1又は2記載の鋼管杭継手の矯正構造。
The outer fitting joint has an outer fitting tip portion provided on the distal end side in the tube length direction, and an outer surface of the outer fitting tip portion is notched so that an outer fitting side key groove portion is formed at the outer fitting tip portion. Being
The inner fitting joint has an inner fitting base end portion provided on the proximal end side in the tube length direction, and an outer surface of the inner fitting base end portion is notched, so that the inner fitting base end portion has an inner fitting side. A keyway is formed,
The outer fitting joint and the inner fitting joint are connected to each other in the tube length direction, and a key groove portion is formed by connecting the outer fitting side key groove portion and the inner fitting side key groove portion in the tube length direction. A key member extending from the outer fitting side key groove part to the inner fitting side key groove part,
The key member has a shaft structure in which a key hole portion is formed by penetrating in a pipe diameter direction and is inserted from the key hole portion to the wire insertion hole, and is fitted into the key groove portion and fixed. The straightening structure of the steel pipe pile joint according to claim 1 or 2.
複数の鋼管杭の継手部分を矯正して連結する鋼管杭継手の矯正方法であって、
管長方向で外嵌継手と内嵌継手とが連結される継手部分で、前記外嵌継手に挿入される前記内嵌継手の内空部にワイヤーを架設する架設工程と、前記内嵌継手を管周方向に弾性変形させる矯正工程とを備え、
前記架設工程では、前記内嵌継手と前記外嵌継手とが連結される前に、前記内嵌継手の外周部を貫通させて形成されたワイヤー挿通孔に前記ワイヤーの端部を挿通するとともに、前記ワイヤー挿通孔に挿通された前記ワイヤーの前記端部を進退部材に固定して、
前記矯正工程では、前記ワイヤー挿通孔に挿通された前記ワイヤーの前記端部を、前記進退部材により管径方向に進退移動させて、前記ワイヤーに管径方向の緊張力が導入又は緩和されることで、前記内嵌継手を管周方向に弾性変形させながら、前記内嵌継手を前記外嵌継手に挿入すること
を特徴とする鋼管杭継手の矯正方法。
A straightening method for a steel pipe pile joint that straightens and connects the joint portions of a plurality of steel pipe piles,
An erection step of laying a wire in an inner space of the inner fitting joint inserted into the outer fitting joint at a joint portion where the outer fitting joint and the inner fitting joint are connected in the pipe length direction; A correction process for elastically deforming in the circumferential direction,
In the installation step, before the inner fitting joint and the outer fitting joint are coupled, the end of the wire is inserted through a wire insertion hole formed by penetrating the outer periphery of the inner fitting joint, Fixing the end of the wire inserted through the wire insertion hole to the advance / retreat member,
In the correction step, the end of the wire inserted through the wire insertion hole is moved forward and backward in the tube radial direction by the advance / retreat member, and a tensile force in the tube radial direction is introduced or alleviated to the wire. Then, the inner fitting joint is inserted into the outer fitting joint while elastically deforming the inner fitting joint in the pipe circumferential direction.
前記矯正工程の後に、前記内嵌継手を前記外嵌継手に挿入した状態で、前記内嵌継手を変形させる再矯正工程を備え、
前記再矯正工程では、前記ワイヤーに導入又は緩和される管径方向の緊張力を調整することで、前記内嵌継手を管周方向に自在に変形させながら、前記外嵌継手と前記内嵌継手とを管周方向で相対回転させて、前記内嵌継手と前記外嵌継手とが連結されること
を特徴とする請求項4記載の鋼管杭継手の矯正方法。
After the straightening step, in a state where the internal fitting joint is inserted into the external fitting joint, a re-correction step for deforming the internal fitting joint is provided,
In the re-correction step, the outer fitting joint and the inner fitting joint are adjusted while freely deforming the inner fitting joint in the pipe circumferential direction by adjusting the tensile force in the pipe radial direction introduced or relaxed to the wire. The steel pipe pile joint correction method according to claim 4, wherein the inner fitting joint and the outer fitting joint are connected to each other by relatively rotating in a pipe circumferential direction.
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