Undrained monotonic and cyclic shear behaviour of saturated sand under wide range of confining stresses

摘要

Since for weak grained soils particle crushing occurs even at low stresses, the authors carried out tests on a hard grained sand over a wide range of stresses to distinguish non-crushing and crushing behaviours. Samples were therefore sieved not onlybefore and after but also at intermediate stages of undrained monotonic and cyclic shear tests at low and high confining stresses to establish the degree of crushing that had occurred. In addition this series of tests can draw on the previous large volume of low stress liquefaction data on the same hard grained sands, and thus allow contrasts to be made between the cyclic strength characteristics in the crushing and non-crushing regions.