Performance-based verification method for ground improved by sand compaction pile with spatial variability in soil strength

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Key Points

To examine the liquefaction characteristics and earthquake-induced settlement properties of ground improved by sand compaction piles considering spatial variability in soil strength.
Conducted earthquake response analysis with simulated spatial variability in soil strength.
Utilized 50 Monte Carlo simulations to gather sufficient statistical data on earthquake-induced settlement.
Proposed a performance verification method assuming a normal distribution for settlement frequency of structures.
SCP method reduces variability in earthquake-induced settlement despite spatial variability in soil strength.
Achieved statistically significant data after 50 trials of Monte Carlo simulation.
Proposed performance verification method shows reliability for SCP improved ground under seismic conditions.

Analyzes the performance of ground improved by sand compaction piles, suggesting effective reduction in earthquake-induced settlement.

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KASAMA et al. (2026) studied this question.

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