BOREHOLE INSIDE VERTICAL LOADING TEST METHOD AND ITS DEVICE

摘要

PROBLEM TO BE SOLVED: To determine a more accurate strength and deformation characteristic of the ground in a plate loading test loading a borehole bottom by using a loading plate installed on a loading device integrated with a boring device after boring. SOLUTION: In the method, after forming the borehole by the boring device, the borehole bottom is loaded by using the loading plate installed on the loading device integrated with the boring device, and the vertical strength and/or the deformation characteristic of the ground is determined from a relationship between a displacement amount and a pressure of the borehole bottom caused by the loading. The displacement amount and/or the pressure is directly measured in the ground. COPYRIGHT: (C)2004,JPO