WO2022270262A1 - Tuyau d'assemblage et procédés de fabrication et de conception de celui-ci, tuyau en acier doté d'un tuyau d'assemblage et procédés de fabrication et de conception de celui-ci, pieu tubulaire en acier et procédé de construction de pieu tubulaire en acier - Google Patents

Tuyau d'assemblage et procédés de fabrication et de conception de celui-ci, tuyau en acier doté d'un tuyau d'assemblage et procédés de fabrication et de conception de celui-ci, pieu tubulaire en acier et procédé de construction de pieu tubulaire en acier Download PDF

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Publication number
WO2022270262A1
WO2022270262A1 PCT/JP2022/022434 JP2022022434W WO2022270262A1 WO 2022270262 A1 WO2022270262 A1 WO 2022270262A1 JP 2022022434 W JP2022022434 W JP 2022022434W WO 2022270262 A1 WO2022270262 A1 WO 2022270262A1
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WO
WIPO (PCT)
Prior art keywords
steel pipe
pipe
joint
joint pipe
steel
Prior art date
Application number
PCT/JP2022/022434
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English (en)
Japanese (ja)
Inventor
和臣 市川
Original Assignee
Ｊｆｅスチール株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ｊｆｅスチール株式会社 filed Critical Ｊｆｅスチール株式会社
Priority to KR1020237040962A priority Critical patent/KR20240004686A/ko
Priority to CN202280043170.0A priority patent/CN117500978A/zh
Publication of WO2022270262A1 publication Critical patent/WO2022270262A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/24—Prefabricated piles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/02—Welded joints
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/20—Miscellaneous comprising details of connection between elements

Definitions

  • the present invention relates to a joint pipe used for joining steel pipes, and particularly to a screw-type or insertion-type joint pipe used for small-diameter steel pipe piles, a manufacturing method thereof, a design method thereof, a steel pipe with a joint pipe, a manufacturing method thereof, a design method thereof.
  • the present invention relates to steel pipe piles and construction methods for steel pipe piles.
  • Steel pipe piles have a limited length due to manufacturing or transportation reasons, and it is necessary to join multiple steel pipe piles at the construction site.
  • welding has been used to join these steel pipes, but in recent years, from the viewpoint of shortening construction time and improving quality control, mechanical joints are increasingly being used.
  • various mechanical joints have been developed and used because welding equipment can be omitted.
  • Such a mechanical joint consists of a pair of joint tubes.
  • the joint pipe is often manufactured by cutting a short steel pipe separately from the steel pipe that forms the main body of the pile, and is welded and attached to the steel pipe of the main body of the pile in advance at the factory.
  • the outer diameter of the joint pipe is generally the same as that of the pile body. This is because there is concern that the joint part will protrude outside the pile, and that the workability will be reduced and the peripheral frictional force exerted when used as a steel pipe pile will be reduced. For the same reason, for example, in the field of road bridge foundations, the range that does not affect peripheral friction is limited to 9 mm or less.
  • the joint pipe used for the mechanical joint is manufactured separately from the steel pipe of the pile body and then attached to the steel pipe by an attachment method such as welding.
  • an attachment method such as welding.
  • misalignment refers to the radial deviation between the outer surface shape of the end of the joint pipe and the outer surface shape of the steel pipe when the joint pipe and the steel pipe are butted together, and the inner surface shape of the end of the joint pipe and the steel pipe. This is the radial deviation that occurs between the inner surface shape of the end portion.
  • the unevenness in the radial direction of the joining end face of the joint pipe and the steel pipe becomes uneven in the circumferential direction. That is, in a certain portion in the circumferential direction, the joint pipe protrudes outwardly, and in other portions, the steel pipe protrudes outwardly. If such a non-uniform step occurs on the joint end face, stress transmission may become non-uniform in the circumferential direction when used as a steel pipe with a joint pipe. Therefore, before welding the joint pipe and the steel pipe, it was necessary to correct the ends (misalignment correction), which required time and effort.
  • the present invention has been made in view of the above, and its object is to provide a joint pipe that can omit the correction of the end portion when attaching to a steel pipe, its manufacturing method and design method, a steel pipe with a joint pipe and its manufacturing method, To provide a design method, a steel pipe pile, and a steel pipe pile construction method.
  • a joint pipe is a screw-type or insertion-type joint pipe that is attached to an end of a steel pipe and joins the steel pipe, wherein the base end portion joined to the steel pipe has an outer diameter of It is larger than the outer diameter of the steel pipe, the inner diameter of the base end is smaller than the inner diameter of the steel pipe, and the amount of protrusion of the base end from the outer peripheral surface of the steel pipe in a state where the steel pipe and the pipe axis are aligned is 9 mm or less. is.
  • a method for manufacturing a joint pipe according to an aspect of the present invention is a method for manufacturing a joint pipe according to the above invention, wherein a steel pipe to which the joint pipe is to be attached is selected, and A seamless steel pipe having a large outer diameter and a small inner diameter is selected from within the standard, and the selected seamless steel pipe is used as a material for the joint pipe, and a joint fitting portion is formed in a portion excluding the base end portion.
  • a method of designing a joint pipe according to an aspect of the present invention is a design method for designing a joint pipe according to the above invention, wherein a steel pipe to which the joint pipe is to be attached is selected, and A seamless steel pipe having a large outer diameter and a small inner diameter is selected from within the standards, and the selected seamless steel pipe is used as the material for the joint pipe.
  • a steel pipe with a joint pipe according to one aspect of the present invention includes the joint pipe according to the above invention at one or both ends of the steel pipe.
  • a method for manufacturing a steel pipe with a joint pipe according to one aspect of the present invention comprises a step of attaching the joint pipe according to the above invention to one or both ends of the steel pipe.
  • a method for designing a steel pipe with a joint pipe according to one aspect of the present invention is a design method for designing a steel pipe with a joint pipe according to the above invention, comprising: selecting a steel pipe to which the joint pipe is to be attached; A seamless steel pipe having an outer diameter larger and an inner diameter smaller than the standard dimensions is selected from within the standard, and the joint pipe made of the selected seamless steel pipe is designed to be provided at one or both ends of the steel pipe.
  • a steel pipe pile according to one aspect of the present invention includes a joint pipe according to the above invention and a plurality of steel pipes joined by the joint pipe.
  • a steel pipe pile construction method is a construction method for constructing a steel pipe pile according to the above invention, wherein the steel pipe having the joint pipe attached to its end is erected in the ground, Another steel pipe having the joint pipe attached to its end is placed on the steel pipe, and the joint pipes are joined to each other.
  • the outer diameter of the base end joined to the steel pipe is larger than the outer diameter of the steel pipe, and the inner diameter of the base end is smaller than the inner diameter of the steel pipe.
  • the base ends protrude inside and outside the steel pipe over the entire circumference of the steel pipe, and non-uniform steps in the circumferential direction do not occur. For this reason, uneven stress transmission in the circumferential direction does not occur when the steel pipe is used as a steel pipe with a joint pipe, and correction of the end portion when attaching to the steel pipe can be omitted.
  • the amount of protrusion from the outer peripheral surface of the steel pipe at the base end is 9 mm or less, so that the peripheral friction of the pile is not affected.
  • FIG. 1 is an explanatory diagram illustrating a joint pipe according to one embodiment of the present invention, and is a cross-sectional view of a state in which the joint pipe (inner joint pipe) is attached to a steel pipe.
  • FIG. 2 is a diagram showing a state in which joint pipes (an inner joint pipe and an outer joint pipe) according to one embodiment of the present invention are fitted.
  • FIG. 1 is a cross-sectional view of a state in which a joint pipe 1 (inner joint pipe) and a steel pipe 3 are attached with their pipe axes aligned (a steel pipe 4 with a joint pipe).
  • the joint pipe 1 of the present embodiment is attached to the end portion of the steel pipe 3 that constitutes the pile body of the steel pipe pile and joins the steel pipe 3.
  • the outer diameter of the end portion 1 a is larger than the outer diameter of the steel pipe 3 and the inner diameter of the base end portion 1 a is smaller than the inner diameter of the steel pipe 3 .
  • 7 is a backing metal and 9 is a weld bead.
  • the proximal end portion 1a of the joint pipe 1 By making the outer diameter of the proximal end portion 1a of the joint pipe 1 larger than the outer diameter of the steel pipe 3 and the inner diameter smaller than the inner diameter of the steel pipe 3, when the joint pipe 1 and the steel pipe 3 are butted together, the proximal end The portion 1a protrudes inside and outside the steel pipe 3 over the entire circumferential direction. As a result, uneven steps in the circumferential direction do not occur in the abutted portion of the joint pipe 1 and the steel pipe 3, and when the steel pipe 4 with the joint pipe (steel pipe 3 with the joint pipe 1) is used, the joint pipe 1 and the steel pipe 3 are not uneven in the circumferential direction. Even stress transmission is achieved. Therefore, the joint pipe 1 can be attached to the steel pipe 3 without straightening the end portions of the joint pipe 1 and the steel pipe 3, and labor can be saved.
  • the joint pipe 1 of the present embodiment has a state in which the steel pipe 3 and the pipe axis (see the dashed line in the drawing) are aligned, and the outer peripheral surface of the steel pipe 3 at the base end portion 1a.
  • the projection amount a (see the enlarged view of the portion surrounded by the dashed line circle in the figure) is set to 9 mm or less.
  • FIG. 2 shows a sectional view of a state in which the joint pipe 1 as the inner joint pipe and the joint pipe 5 as the outer joint pipe are fitted to each other.
  • the joint pipe 5 in the joint pipe 5 as well, by making the outer diameter of the base end portion 5a larger than the outer diameter of the steel pipe 3 and the inner diameter smaller than the inner diameter of the steel pipe 3, the joint pipe 5 and the steel pipe 3 are aligned and attached (steel pipe 11 with a joint pipe), the base end portion 5a protrudes inside and outside the steel pipe 3 over the entire circumferential direction.
  • a steel pipe with a joint pipe that is an inner joint pipe at one or both ends of a steel pipe a steel pipe with a joint pipe that is an outer joint pipe at one or both ends of a steel pipe, one of a steel pipe
  • the present invention includes a joint pipe that is an inner joint pipe at one end of the pipe and a joint pipe that is an outer joint pipe at the other end.
  • the manufacturing method of the joint pipe 1 of the present embodiment selects a steel pipe to which the joint pipe 1 is attached, selects a seamless steel pipe having an outer diameter larger and an inner diameter smaller than the standard dimensions of the selected steel pipe 3 from within the standard,
  • the selected seamless steel pipe is used as a material for the joint pipe 1, and a joint fitting portion 1b is formed by forming a threaded portion, for example, by cutting in a portion other than the base end portion 1a.
  • the joint pipe 1 is generally manufactured by cutting a short steel pipe different from the steel pipe 3 of the pile body. Therefore, if the steel pipe 3 to which the joint pipe 1 is to be attached is selected, and a short steel pipe having an outer diameter larger and an inner diameter smaller than the standard dimensions (outer diameter and inner diameter) of the selected steel pipe 3 is used as the material for the joint pipe 1 good.
  • the joint pipe 1 can be manufactured only by forming the joint fitting portion 1b (threaded portion) by cutting the portion other than the base end portion 1a. If the outer diameter difference between the short steel pipe and the steel pipe 3 exceeds 18 mm, it is necessary to cut the outer peripheral surface until it becomes 18 mm or less. A large one is preferable.
  • the joint pipe 1 can be efficiently manufactured by using a seamless steel pipe as the short steel pipe. The reason why the joint pipe 1 can be efficiently manufactured by using the seamless steel pipe will be specifically described in the design method described later.
  • a steel pipe 4 with a joint pipe can be manufactured.
  • a method of attaching the joint pipe 1 to the steel pipe 3 it is common to lay the steel pipe 3 on its side on a turning roller and weld the joint pipe 1 to its end.
  • the backing metal 7 is attached to the inner surface of the steel pipe 3, and main welding is performed from the outer surface of the steel pipe 3 by full penetration welding.
  • the joint pipe 1 of this embodiment has a shape projecting outward from the steel pipe 3 in the entire circumferential direction when the steel pipe 3 and the pipe axis are aligned. Easy to weld.
  • fillet welding may be used instead of penetration welding.
  • the design method of the joint pipe 1 of the present embodiment selects the steel pipe 3 to which the joint pipe 1 is to be attached, and selects a seamless steel pipe having an outer diameter larger and an inner diameter smaller than the standard dimensions of the selected steel pipe 3 from within the standard. , the selected seamless steel pipe is used as a material for the joint pipe 1. This will be specifically described below.
  • Electric resistance welded steel pipes, seamless steel pipes, plate-wrapped steel pipes, etc. are used for the steel pipes 3 that constitute the main body of the steel pipe pile. Since an electric resistance welded pipe is generally used as a steel pipe pile, a case where an electric resistance welded steel pipe is used for the steel pipe 3 will be described below as an example. As an industrial product, the outer diameter and plate thickness of electric resistance welded steel pipes are standardized. An electric resistance welded steel pipe constituting the steel pipe 3 is selected from among them.
  • the outer diameter will be greatly increased.
  • the above-described overhang a (see FIG. 1) must be 9 mm or less. Increased volume and cost.
  • a seamless steel pipe is used as the material for the joint pipe 1.
  • Seamless steel pipes are also standardized as industrial products, but the standards for seamless steel pipes correspond to various sizes.
  • the standard also includes an outer diameter that is slightly larger than the dimensions.
  • Table 1 shows the standards for the outer diameter of the electric resistance welded steel pipe used for the steel pipe 3, and selects and shows a suitable seamless steel pipe as the joint pipe 1 to be attached thereto from within the standards.
  • the steel pipe 3 is an electric resistance welded steel pipe with an outer diameter of 165.2 mm
  • the joint pipe 1 attached to it is also an electric resistance welded steel pipe
  • an electric resistance welded steel pipe with an outer diameter of 190.7 mm which is one size larger
  • the joint pipe 1 with an outer diameter of 190.7 mm is attached to the steel pipe 3 with an outer diameter of 165.2 mm, the amount of overhang a exceeds 9 mm, so cutting is required to reduce the outer diameter of this electric resistance welded steel pipe, which increases processing costs. .
  • the joint pipe 1 is a seamless steel pipe
  • a seamless steel pipe with an outer diameter of 168.3 mm can be used.
  • a seamless steel pipe with an outer diameter of 168.3 mm does not require cutting to reduce the outer diameter, and the joint pipe 1 with an overhang a of 9 mm or less can be manufactured only by cutting the joint fitting portion 1b.
  • the steel pipe 3 is an electric resistance welded steel pipe with an outer diameter of 406.4 mm
  • a seamless steel pipe with an outer diameter of 426.0 mm will be used. Therefore, in order to reduce the overhang amount a to 9 mm or less, cutting work is required to reduce the outer diameter of the seamless steel pipe.
  • the diameters shown in Table 1 are the standard diameters, and the outer diameter, inner diameter, and wall thickness of the end portion of the actually manufactured steel pipe change in the circumferential direction or become elliptical. A portion larger than the diameter and a portion smaller than the reference diameter are generated. Since the diameter difference between the seamless steel pipe and the electric resistance welded steel pipe described above is small, the case where the diameters of the electric resistance welded steel pipe and the seamless steel pipe deviate from the reference diameter was also examined.
  • roundness (maximum diameter - minimum diameter) / standard diameter x 100 (1) Note that the maximum diameter and minimum diameter in formula (1) are those at the welded portion of the steel pipe.
  • the standard diameter of the electric resistance welded steel pipe shown in Table 1 is multiplied by 1.005 (+0.5%), and the standard diameter of the seamless steel pipe is multiplied by 0.995 (-0.5%). Comparing the values, the outer diameter of the seamless steel pipe is larger than that of the electric resistance welded steel pipe in any case.
  • the degree of distortion is allowed by the standards. If it is, it can be considered that there is no problem in welding the joint pipe 1 and the steel pipe 3 together.
  • Table 3 shows the general plate thickness when using the electric resistance welded steel pipe with each outer diameter shown in Table 1 for the steel pipe pile (steel pipe 3), and the manufacturing plate thickness range of the seamless steel pipe with each outer diameter shown in Table 1. is shown.
  • Table 2 an electric resistance welded steel pipe with an outer diameter of 165.2 mm and a plate thickness of 5.6 mm has an inner diameter of 154 mm, and an electric resistance welded steel pipe with an outer diameter of 165.2 mm and a plate thickness of 7.1 mm has an inner diameter of 154 mm. is 151 mm.
  • the manufacturing plate thickness range of a seamless steel pipe having an outer diameter of 168.3 mm is 4.0 mm or more and 40 mm or less. Therefore, the plate thickness should be set within this manufacturing plate thickness range so that the inner diameter is less than 154 mm or 151 mm.
  • the steel pipe 4 with a joint pipe can be designed by designing the above-described joint pipe 1 to be provided at one or both ends of the steel pipe 3 .
  • a steel pipe 3 to which the joint pipe 1 is attached is selected, a seamless steel pipe having an outer diameter larger and an inner diameter smaller than the standard dimensions of the selected steel pipe 3 is selected from within the standard, and the selected seamless steel pipe is used as a material.
  • the steel pipe 4 with a joint pipe of the present embodiment can be designed by designing the joint pipe 1 to be provided at one or both ends of the steel pipe 3 .
  • the manufacturing method and design method of the joint pipe and the manufacturing method and design method of the steel pipe with the joint pipe described above will be explained using the joint pipe 1 which is the inner joint pipe and the steel pipe with the joint pipe 4 having the joint pipe 1 as an example.
  • the outer diameter of the base end portion 1a of the joint pipe 1 is larger than the outer diameter of the steel pipe 3, and the inner diameter of the base end portion 1a is smaller than the inner diameter of the steel pipe 3.
  • the trouble of correcting the ends of the joint pipe 1 and the steel pipe 3 when attaching to the steel pipe 3 can be omitted.
  • the amount of protrusion from the outer peripheral surface of the steel pipe 3 is 9 mm or less, so even when applied to a steel pipe pile, a predetermined bearing capacity can be exhibited.
  • the amount of overhang is 9 mm or less, so that a predetermined bearing capacity can be reliably obtained. It can be demonstrated and is more suitable.
  • the present invention when the present invention is applied to a steel pipe pile having an outer diameter of 406.4 mm or less, which is generally called a "small diameter", it is possible to reduce the manufacturing cost because the manufacturing labor can be greatly reduced.
  • steel pipe piles with an outer diameter of 406.4 mm or less are often rotary penetrating piles, the present invention, which has little effect on the peripheral surface friction of piles, is more suitable.
  • the cutting amount when cutting the material can be minimized, so that the manufacturing cost can be reduced.
  • a threaded joint pipe in which the joint pipes are fitted to each other by means of threads formed in the joint fitting portion has been described as an example. It is not limited to this.
  • the convex portion formed on the outer peripheral surface of the inner joint pipe and the concave portion formed on the inner peripheral surface of the outer joint pipe are engaged to fit the joint pipes together. It may be of a plug-in type.
  • the joint fitting portions 1b and 5b of the joint pipes 1 and 5 are formed by cutting, but the present invention is not limited to this. Other known or unknown techniques may be used to form the joint fitting portions 1b and 5b, and the effects of the present invention can be obtained in such cases as well.
  • the joint pipe of the present invention is not limited to the one in which the joint fitting portion is processed later on the steel pipe as the raw material as described above, and for example, the joint fitting portion is manufactured at the same time using casting or a 3D printer. may be
  • joint pipes 1 and 5 can be reliably joined to the steel pipe 3 with the pipe axes aligned with the steel pipe 3, can withstand various loads applied during construction and use, and can exhibit bearing capacity as a steel pipe pile. Any other mounting method may be used.
  • the joint pipe and the steel pipe with the joint pipe to which the joint pipe is attached have been described.
  • the steel pipe pile includes the joint pipe described in the above embodiment and a plurality of steel pipes joined by the joint pipe.
  • a steel pipe with a joint pipe attached to the end (steel pipe with a joint pipe) is set up in the ground, and the joint pipe is placed on the end of the steel pipe. It is preferable to arrange another steel pipe (steel pipe with another joint pipe) attached to the joint pipe and join the joint pipes.
  • the present invention is suitable for application to joint pipes used for joining steel pipes, particularly screw-type or insertion-type joint pipes used for small-diameter steel pipe piles.
  • joint pipe (inner joint pipe) 1a base end portion 1b joint fitting portion 3 steel pipe 4 steel pipe with joint pipe 5 joint pipe (outer joint pipe) 5a base end portion 5b joint fitting portion 7 backing metal 9 weld bead 11 steel pipe with joint pipe

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Piles And Underground Anchors (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)

Abstract

L'objectif de la présente invention est de fournir un tuyau d'assemblage et des procédés de fabrication et de conception de celui-ci, un tuyau en acier doté d'un tuyau d'assemblage et des procédés de fabrication et de conception de celui-ci, un pieu tubulaire en acier, et un procédé de construction d'un pieu tubulaire en acier. Avec la présente invention, il est possible d'économiser du temps et de l'effort pour une correction de partie d'extrémité pendant la fixation à un tuyau en acier, et la présente invention peut être appliquée à un pieu tubulaire en acier de petit diamètre. À cet effet, un tuyau d'assemblage (1) d'un type à vis ou d'un type à insert est fixé à une partie d'extrémité d'un tuyau en acier (3) pour s'accoupler avec. Le diamètre externe d'une partie d'extrémité de base (1a) qui est couplée au tuyau en acier (3) est plus grand que le diamètre externe du tuyau en acier (3). Le diamètre interne de la partie d'extrémité de base (1a) est plus petit que le diamètre interne du tuyau en acier (3), et dans un état dans lequel l'axe de tuyau est aligné avec le tuyau en acier (3), la longueur de projection de la partie d'extrémité de base (1a) à partir d'une surface circonférentielle externe du tuyau d'acier (3) est inférieure ou égale à 9 mm.
PCT/JP2022/022434 2021-06-24 2022-06-02 Tuyau d'assemblage et procédés de fabrication et de conception de celui-ci, tuyau en acier doté d'un tuyau d'assemblage et procédés de fabrication et de conception de celui-ci, pieu tubulaire en acier et procédé de construction de pieu tubulaire en acier WO2022270262A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020237040962A KR20240004686A (ko) 2021-06-24 2022-06-02 조인트관 및 그 제조 방법, 설계 방법, 조인트관 부착 강관 및 그 제조 방법, 설계 방법, 강관 말뚝, 및 강관 말뚝의 시공 방법
CN202280043170.0A CN117500978A (zh) 2021-06-24 2022-06-02 接头管及其制造方法、设计方法、带接头管的钢管及其制造方法、设计方法、钢管桩及钢管桩的施工方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-104520 2021-06-24
JP2021104520A JP7160150B1 (ja) 2021-06-24 2021-06-24 継手管、その製造方法、設計方法、継手管付き鋼管、その製造方法、設計方法、鋼管杭及び鋼管杭の施工方法

Publications (1)

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WO2022270262A1 true WO2022270262A1 (fr) 2022-12-29

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JP (1) JP7160150B1 (fr)
KR (1) KR20240004686A (fr)
CN (1) CN117500978A (fr)
TW (1) TWI809936B (fr)
WO (1) WO2022270262A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006152796A (ja) * 2004-11-08 2006-06-15 Jfe Steel Kk 鋼管同士の連結方法
JP2009024436A (ja) * 2007-07-23 2009-02-05 Chiyoda Koei Kk 鋼管杭の機械式継手
JP2009299298A (ja) * 2008-06-11 2009-12-24 Chiyoda Geotech Co Ltd 鋼管杭の機械式継手

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3747594B2 (ja) 1996-10-22 2006-02-22 Ｊｆｅスチール株式会社 鋼管杭の接合継手
JP5021437B2 (ja) 2007-12-05 2012-09-05 Ｊｆｅスチール株式会社 鋼管杭接続構造
CN211547696U (zh) * 2019-12-17 2020-09-22 中交路桥建设有限公司 一种钢管桩

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006152796A (ja) * 2004-11-08 2006-06-15 Jfe Steel Kk 鋼管同士の連結方法
JP2009024436A (ja) * 2007-07-23 2009-02-05 Chiyoda Koei Kk 鋼管杭の機械式継手
JP2009299298A (ja) * 2008-06-11 2009-12-24 Chiyoda Geotech Co Ltd 鋼管杭の機械式継手

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CN117500978A (zh) 2024-02-02
KR20240004686A (ko) 2024-01-11
TWI809936B (zh) 2023-07-21
JP2023003436A (ja) 2023-01-17
TW202302961A (zh) 2023-01-16
JP7160150B1 (ja) 2022-10-25

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