Title:
場所打ちコンクリート杭の構築方法及び場所打ちコンクリート杭
Document Type and Number:
Japanese Patent JP7186317
Kind Code:
B2
Abstract:
To provide the construction method of a cast-in-place concrete pile allowing to excavate and form excavation holes of an adjacent under-reamed pile part and a connection pile part by using the same excavator, and capable of efficiently and economically constructing the under-reamed pile comprising the multiple under-reamed pile parts and the connection pile parts, and the cast-in-place concrete pile.SOLUTION: A columnar ground improving body 15 is formed by improving the ground G of a pair of adjacent under-reamed pile parts 1, or the ground G of a connected pile part 8. The ground G of the connection pile part 8 with no ground improving body 15 formed, or the ground G of the pair of the adjacent under-reamed pile parts 1 is excavated in advance using an excavator 9 for a pile to form an excavation hole 10. The ground G of the pair of the adjacent under-reamed pile parts 1 formed with the ground improving body 15, or the ground G of the connection pile part 8 is excavated later using the excavator 9 for the pile and vertically guiding by the ground improving body 15 to form a columnar excavation hole 11 and to form a connection excavation hole by communicating with the excavation hole 10 formed by the advanced excavation.SELECTED DRAWING: Figure 1
Inventors:
Hideyuki Mano
Application Number:
JP2022018939A
Publication Date:
December 08, 2022
Filing Date:
February 09, 2022
Export Citation:
Assignee:
Shimizu Construction Co., Ltd.
International Classes:
E02D5/44; E02D5/18; E02D5/48
Domestic Patent References:
| JP2004360252A | ||||
| JP63315724A | ||||
| JP60070692U | ||||
| JP6317078A | ||||
| JP2000096969A | ||||
| JP2010031561A | ||||
| JP2005241262A | ||||
| JP2016199966A |
Attorney, Agent or Firm:
Yasushi Matsunuma
Kenichi Kawabuchi
Kazuzumi Nishizawa
Kenichi Kawabuchi
Kazuzumi Nishizawa