Dynamic Behavior of a Hollowed, Cylindrical Soil Specimen under Cyclic Torsional Shear Loading (Part 2)

Selected Parameters Related to Soil Failure

Abstract

Further experiments were conducted to clarify the dynamic shear strength of sandy loam soil which aimed to simulate soil failure in the field during operations of a tractor inclusive of its turning action at headland. The soil failure characteristics were observed and discussed in relation to the shear strength and the critical state theory. The dynamic shear strength and the critical state were examined under specific test combinations and significant failure appeared within a specific range of the applied load. Below this specific range, it was found that the soil specimen did not fail in spite of higher number of cyclic loading. On the other hand, some cases of higher cyclic loading were subjected to soil failure on the way of the trace of first loading cycle. The required number of cyclic loading at failure state and some related parameters were also discussed.