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Subsurface Liquefaction Mitigation Analysis

Design a small-scale soil foundation system that maintains structural integrity under rapid dynamic loading to simulate seismic-induced liquefaction. Participants must engineer a drainage or compaction strategy using granular media that prevents total pore pressure buildup and subsequent bearing capacity failure when subjected to controlled harmonic vibrations. Document the volumetric strain and settlement ratios observed before and after the simulated seismic event.

Materials: Fine-grain sand, saturated silt mix, vibrating platform or mass-balanced shaker, transparent acrylic column, water, and a lightweight structural model.

Deadline: October 12, 2026
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Background: NASA/ESA Hubble