To simply estimate shear strength parameters (an internal frictional angle and cohesion) of ground or a slope in a present location.
A rod is rotated at a low speed from the ground while radial expansion pressure acts on the outer periphery of the rod inserted into an excavated hole, by fluid pressure in the excavated hole by a plurality of tension-resistant members 603A having one side fixed to the rod, and a plurality of resistive elements 605A fixed to the tension-resistant members 603A. Thereby, a side wall of the excavated hole is destroyed in a circumferential direction, and torque during destruction is measured. Consequently, an internal frictional angle and cohesion, which are shear strength of the ground, are concurrently determined.
MORI SHIGEYUKI
MATSUSHIMA KENICHI
ARIYOSHI MITSURU
UENO KAZUHIRO
OKITA KOZO
HAMANO KUNIHIKO
TAKAMORI MASAKAZU
OKITA TAKASHI
OKITAKO SHOJI KK
| JPH08312299A | 1996-11-26 | |||
| JP2003227786A | 2003-08-15 | |||
| JP2011047142A | 2011-03-10 | |||
| JPS62290B2 | 1987-01-07 |
| US4649741A | 1987-03-17 |
Seiichi Yakumaru