Study on Evaluation of Soil Strength Parameters by using the Resistive Forces acting on an Excavating Blade

Abstract

In order to robotize construction machinery like a bulldozer, it is significant to investigate the relationship between the resistive forces acting on an excavating blade and the soil strength parameters, i.e., the cohesion and the angle of internal friction. In this paper, a method to estimate the soil strength parameters from the resistive forces acting on an excavating blade was examined from the results of two experiments, that is, direct shear test and soil-excavation test using a flat blade that resemble bulldozer parts. It was confirmed that each soil had their unique relationship between the soil strength parameters and the resistive forces acting on the excavating blade.