ABSTRACT
Shear strength and liquefaction resistance in granular soils are influenced by a combination of bulk properties such as relative density and particle characteristics including particle shape and size. To capture their coupled effect on the shear strength and liquefaction resistance, these three parameters were integrated into a single descriptor called the packing index, based on their individual contributions. Through rigorous statistical analysis, a power-law relationship was developed linking the cyclic resistance ratio (CRR) and internal friction angle (ϕ) to the packing index (α), providing a more streamlined approach for evaluating liquefaction resistance. The proposed method was compared with the several existing liquefaction assessment methods. Results showed that the ϕ vs N relationship given by Mujtaba et al. (2018) and proposed method estimates CRR that align more closely with the well-established liquefaction methods. However, the applicability of the proposed method is currently limited to clean sands with a coefficient of uniformity ≤ 2.5, relative density between 20% and 90%, and a confining stress of 100 kPa.
