Effect of Relative Density on Repeated Liquefaction Behavior in Centrifuge Modeling
Effect of Relative Density on Repeated Liquefaction Behavior in Centrifuge Modeling
Repeated liquefaction occurs when a soil experiences multiple liquefaction events due to successive seismic loadings, with the excess pore water pressure required to fully dissipate after each shaking episode. Although previous studies have reported changes in soil resistance following an initial liquefaction event, the influence of relative density on this behavior remains insufficiently understood. This study investigates the effect of relative density on the repeated liquefaction response of sandy soils using centrifuge modelling. Experiments were conducted under a centrifugal acceleration of 50g to replicate prototype stress conditions. The results demonstrate that while loose specimens (Dr=50%) exhibit post-shaking strength recovery at greater depths due to densification, dense specimens (Dr=80%) show a continuous reduction in cone resistance across the profile.
Jhon Florez; Nao Takamatsu; Kyohei Ueda; Ryosuke Uzuoka
11th International Conference on Physical Modelling in Geotechnics (ICPMG2026)
Session 2: Scaling laws and fundamentals
https://doi.org/10.53243/ICPMG2026-247