Title:
鋼管、鋼管構造体、鋼管構造体の構築方法
Document Type and Number:
Japanese Patent JP7172978
Kind Code:
B2
Abstract:
To provide a steel pipe, a steel pipe structure, and a construction method of steel pipe structure that can secure bearing capacity performance of pile by suppressing lowering proof stress of bearing ground while reducing press-in resistance in conducting press-in construction of a steel pipe rotated and/or fluctuated, and that can secure horizontal resistance by suppressing lowering horizontal ground spring of steel pipe peripheral surface.SOLUTION: A steel pipe 1 according to the present invention is the steel pipe 1 that is embedded within a ground while excavating the ground by being rotated and/or fluctuated, and includes cutout shape parts 3 at its tip. The cutout shape parts 3 have a function that excavates a ground and forms a circular excavation groove when the steel pipe 1 rotates.SELECTED DRAWING: Figure 1
Inventors:
Shingo Awazu
Kunihiko Onda
Kunihiko Onda
Application Number:
JP2019232209A
Publication Date:
November 16, 2022
Filing Date:
December 24, 2019
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
E21B17/14; E02D5/28; E02D7/20; E21B7/20
Domestic Patent References:
| JP4077632U | ||||
| JP61071628U | ||||
| JP53070507A | ||||
| JP2018123670A | ||||
| JP2004019225A | ||||
| JP2005133348A | ||||
| JP1146011A | ||||
| JP11071758A | ||||
| JP2001059219A | ||||
| JP2013147814A |
Attorney, Agent or Firm:
Toshihiko Ishikawa