Centrifuge Modelling of a High Embankment under Seismic Motions: LEAP-ASIA 2025 Tests at Kansai University
Centrifuge Modelling of a High Embankment under Seismic Motions: LEAP-ASIA 2025 Tests at Kansai University
As part of LEAP-ASIA-2025, centrifuge model experiments and finite element analyses were conducted at Kansai University to investigate the seismic response of a uniform embankment founded on ground with relative densities of 50% and 70%. In the centrifuge experiments, generalised scaling laws were applied in addition to standard centrifuge scaling, and prototype-scale numerical analyses were validated against the experiments. Supplementary investigations were also performed by applying an impermeable surface layer to examine partially drained conditions. Generalised scaling-law-based centrifuge experiments showed good agreement with prototype-scaled numerical analyses as relative density increased, and overburden stress decreased. The partially drained condition resulted in a pronounced delay in the dissipation of excess pore water pressure, suggesting that, in impermeable surface conditions representative of natural urban ground, the duration of liquefaction-induced strength reduction may differ from that predicted by idealised experimental and numerical models.
Tetsuo Tobita; Hyuk Kee Hong; Mizuki Kunisawa; Hayato Tobe
11th International Conference on Physical Modelling in Geotechnics (ICPMG2026)
Special Session 10: Liquefaction Experiments and Analysis Projects – Lesson Learned from LEAP-Asia-2025
https://doi.org/10.53243/ICPMG2026-363