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By: Shrutika S Sanghai and Dipak B Gaidhane.
Abstract – Soil-structure interaction (SSI) significantly influences the seismic performance of structures, necessitating advanced modeling and mitigation strategies to address dynamic responses across various structural configurations and soil types. This review synthesizes recent research on SSI effects in reinforced concrete (RC) frames, tall buildings, and subway stations, employing nonlinear finite element modeling, shaking table tests, and probabilistic fragility analyses. Studies highlight that SSI alters natural frequencies, damping, and seismic demands, with structure-soil interaction (SSI) reducing exceedance probabilities for immediate occupancy, life safety, and collapse prevention in RC frame clusters, though pounding and post-earthquake tilt pose challenges. Inter-story isolation in high-rise buildings mitigates displacements but requires optimization for low shear wave velocity soils. Soil-pile foundation-structure interaction (SPFSI) reduces global ductility in RC frames and wall-frames, particularly in softer soils, necessitating adjusted seismic response factors. Tuned mass dampers (TMDs) and semi-active TMDs (STMDs) effectively reduce torsional irregularities and roof drifts in tall buildings, with STMDs offering superior robustness against parameter variations. Base isolation and viscoelastic dampers further mitigate SSI effects in mid-rise and soft-story buildings, respectively, though site amplification can increase vulnerability if neglected.
Key Words: Soil-structure interaction (SSI), Reinforced Concrete (RC),Soft-Story buildings, Soil-pile foundation-structure interaction (SPFSI), Tuned mass dampers (TMDs).
Citation:
Refrences:
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