Quantitative assessment of the influence of surface roughness on soil stiffness

摘要: The nature of soil stiffness at small strains remains poorly understood. relationship between (e.g. shear stiffness, G0) and isotropic confining pressure (p′) can be described using a power function with exponent (b), that is, G0 = A (p′/pr)b, where A is constant pr an arbitrary reference pressure. Experimentally determined values b are usually around 0·5 these higher than the value 0·33 analytically Hertzian theory. theory considers contact two smooth, elastic spheres; however, in reality, inter-particle contacts complex particle shape surface roughness affecting interaction. Thus not directly applicable to predict real stiffness. It has, provided useful basis develop analytical framework consider influence on small-strain Here, earlier contributions this extended improved by p...