Title:
内面突起付き鋼管杭の製造方法、鋼管杭の施工方法、及び内面突起付き鋼管杭
Document Type and Number:
Japanese Patent JP7295436
Kind Code:
B2
Abstract:
To enable a protrusion to be easily provided in an arbitrary position on an inner surface of a steel pipe after a foundation pile is driven on site, without the need for a hot-rolling step and a welding step.SOLUTION: A method of manufacturing a steel pipe pile with a protrusion on an inner surface includes the following steps of: forming a recessed groove part 21a on an inner surface 2a of a steel pipe 2 by extending the steel pipe 2 to the outside from the inside in a pipe diameter direction by incremental forming; and attaching a protrusion member 4 to the recessed groove part 21a. After the steel pipe 2 is extended to the outside from the inside by the incremental forming, the protrusion member 4 is attached to the inner surface 2a of the steel pipe 2 by press working.SELECTED DRAWING: Figure 1
Inventors:
Taku Kobayashi
Yoshiro Ishihama
Atsushi Agata
Shinji Taenaka
Yoshiro Ishihama
Atsushi Agata
Shinji Taenaka
Application Number:
JP2020012895A
Publication Date:
June 21, 2023
Filing Date:
January 29, 2020
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
E02D5/48; E02D5/28
Domestic Patent References:
| JP2000220139A | ||||
| JP2018193686A | ||||
| JP2004124491A | ||||
| JP2012200766A | ||||
| JP2005068987A | ||||
| JP58010936U | ||||
| JP2016132923A | ||||
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| JP2015168967A | ||||
| JP11093158A | ||||
| JP62113986A | ||||
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Foreign References:
| US5484174 |
Attorney, Agent or Firm:
Sumio Tanai
Mitsuo Teramoto
Tomoo Katsumata
Hiroshi Yamaguchi
Mitsuo Teramoto
Tomoo Katsumata
Hiroshi Yamaguchi