Supporting data for "Laboratory investigation of elastic stiffness of sands: effects of sample preparation, stress anisotropy and cyclic loadings"

Soil, as a natural granular material, is composed of solid grains and voids filled with fluid. Its behavior is generally nonlinear, and the stiffness of soil tends to decrease as strain increases. However, at infinitesimally small strain values, typically below 10-5, the stiffness is assumed to remain constant, known as small-strain or elastic stiffness. The characterization of these elastic properties of granular soils has garnered longstanding interest in both engineering applications and theoretical aspects. This study investigates the influence of soil fabric and stress anisotropic effects on small-strain stiffness of sandy soil.

土壤作为一种天然颗粒状物质，由固态颗粒及填充流体的空隙构成。其行为通常呈现非线性，土壤的刚度随应变增加而逐渐降低。然而，在无穷小应变值，通常小于10^-5的情况下，刚度被假定为保持恒定，称为小应变或弹性刚度。对这些颗粒状土壤的弹性特性的表征，在工程应用和理论层面都引起了长期而广泛的关注。本研究旨在探讨土壤结构及其应力各向异性效应对沙土小应变刚度的影响。