Title:
METHOD AND SYSTEM FOR DETECTING SUBSOIL UNEXCAVATED BY CAISSON BLADE
Document Type and Number:
Japanese Patent JP2019027080
Kind Code:
A
Abstract:
To securely excavate approximately the whole of an inner side face of a caisson blade, to secure immersion accuracy of a caisson and to properly maintain quality of a final structure.SOLUTION: In this method and system for detecting a subsoil unexcavated by a caisson blade, a reactive force from a subsoil acting on an inner side face of a blade C10 of a caisson C is measured as a shear force by sensors S2 which are arranged at a plurality of positions in a whole peripheral direction of the inner side face of the blade C10 of the caisson C and which can simultaneously measure earth/water pressure and the shear force. Presence/absence of an unexcavated subsoil in the inner side face of the blade C10 in an excavation of the subsoil inside the caisson C is determined, based on the shear force.SELECTED DRAWING: Figure 7
More Like This:
Inventors:
KAYUKAWA KOJI
MASUDA KOJI
YAGI YOSHIYUKI
ISHIDA CHIKARA
MASUDA KOJI
YAGI YOSHIYUKI
ISHIDA CHIKARA
Application Number:
JP2017145494A
Publication Date:
February 21, 2019
Filing Date:
July 27, 2017
Export Citation:
Assignee:
HAZAMA ANDO CORP
International Classes:
E02D23/08
Domestic Patent References:
| JP2717874B2 | 1998-02-25 | |||
| JP2017101436A | 2017-06-08 | |||
| JPS6232412B2 | 1987-07-14 | |||
| JPS62288218A | 1987-12-15 | |||
| JPH02112524A | 1990-04-25 |
Foreign References:
| US7921573B1 | 2011-04-12 |
Attorney, Agent or Firm:
Hajime Sakai
Masahiro Kurai
Masahiro Kurai