Title:
基礎杭施工時における支持地盤の確認方法及びそのためのオーガー
Document Type and Number:
Japanese Patent JP7112888
Kind Code:
B2
Abstract:
To directly measure the bearing capacity of a bearing ground in a state where an auger is inserted into the ground during construction of a foundation pile carried out by using the auger having a helical blade around a rod shaft.SOLUTION: A bearing capacity measurement loading plate 15 is housed so as to project in an auger shaft direction at a tip of an auger 1, the bearing capacity measurement loading plate 15 is projected at a stage where the tip of the auger 1 reaches a bearing layer H, and the settlement of the auger 1 is measured by applying the dead weight of the auger 1. Alternatively, a hydraulic jack 19 is provided inside the tip of the auger 1, the bearing capacity measurement loading plate 15 is born at a piston tip, the hydraulic jack 19 is extended to apply a load on the bearing capacity measurement loading plate 15, and a jack pressure and a jack extension amount are measured in a state where the auger 1 is bound so as not to vertically move at the stage where the tip of the auger 1 reaches the bearing layer H.SELECTED DRAWING: Figure 6
Inventors:
Takuo Tabuchi
Masayuki Yamamoto
Shintaro Nakagawa
Yasushi Shibata
Tsukitate Yukihana
Masami Ichikawa
Makoto Ogawa
Makoto Tone
Keisuke Manabe
Masayuki Yamamoto
Shintaro Nakagawa
Yasushi Shibata
Tsukitate Yukihana
Masami Ichikawa
Makoto Ogawa
Makoto Tone
Keisuke Manabe
Application Number:
JP2018101642A
Publication Date:
August 04, 2022
Filing Date:
May 28, 2018
Export Citation:
Assignee:
Toda Construction Co., Ltd.
International Classes:
E02D1/00; E02D1/04; E21B7/00
Domestic Patent References:
| JP3028411A | ||||
| JP2012067560A | ||||
| JP2017160714A | ||||
| JP2017115302A | ||||
| JP2000054778A | ||||
| JP2017031573A |
Foreign References:
| US20040065453 |
Attorney, Agent or Firm:
Hisashi Izumi