Title:
拡径杭用杭孔の造成方法
Document Type and Number:
Japanese Patent JP7213488
Kind Code:
B2
Abstract:
To provide an establishing method of a pile hole for diameter expanding pile, which can efficiently establish a pile hole for an expanded bottom part having a pile hole for an intermediate diameter expanding portion.SOLUTION: An establishing method of a pile hole for diameter expanding pile having a shank-receiving pile hole P1 and a pile hole for intermediate diameter expanding portion P2 comprises : "A" process to establish the shank-receiving pile hole P1 by using a shank-receiving pile hole excavator having an excavation bucket 95 mounted on a kelly bar 20; "B" process to establish the pile hole for intermediate diameter expanding portion P2 by using a pile hole excavator for intermediate diameter expanding portion 100 having a mechanical diameter expanding bucket 80 with a hydraulic mechanism mounted on the kelly bar 20; and "C" process to remove an excavated earth ZD accumulated below the shank-receiving pile hole P1 among the excavated earth generated in the "B" process by the excavation bucket 95.SELECTED DRAWING: Figure 10
Inventors:
Yoshihiro Horii
Toru Watanabe
Kentaro Hama
Iwata Akihiro
Akizuki Michitaka
Kubo Yutaka
Yoshitaka Nakanishi
Takuya Kozama
Toru Watanabe
Kentaro Hama
Iwata Akihiro
Akizuki Michitaka
Kubo Yutaka
Yoshitaka Nakanishi
Takuya Kozama
Application Number:
JP2019061377A
Publication Date:
January 27, 2023
Filing Date:
March 27, 2019
Export Citation:
Assignee:
Taisei Corporation
System Measurement Co., Ltd.
System Measurement Co., Ltd.
International Classes:
E02D5/44; E02D5/48; E21B10/32; E21B11/00
Domestic Patent References:
| JP2009007835A | ||||
| JP7145616A | ||||
| JP2005273293A | ||||
| JP2008014007A | ||||
| JP2011058256A | ||||
| JP2008150787A |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito