Abstract:
Sand-rubber mixture (SRM) is widely considered as an energy-dissipating layer
for vibration mitigation in soils. The present study is focused on using the SRM as an energy
dissipation layer below building foundation referred to as the Geotechnical Seismic Isolation
layer (GSI) which acts as a buffer to incoming vibrations. Geosynthetic reinforcement is
included in the above GSI system to accentuate the damping mechanism and prevent seismic
settlements during shaking. The present study aims to experimentally evaluate the dynamic
response of the geogrid reinforced SRM-GSI system through scaled model tests. Model footing
resting on the geogrid reinforced SRM-GSI system was subjected to continuous cyclic loads and
the results are evaluated in terms of load-settlement response for different cycles of loading. It
was observed that the geogrid reinforced SRM-GSI system is crucial in reducing the seismic
settlement at various loading cycles and the soil-foundation system’s overall dynamic response.
