Investigating the role of nonlinear dynamic interaction of soil structure on theseismic response of structures

The examination of nonlinear dynamic soil-structure interaction (SSI) within the seismic responsesdomain uncovers noteworthy implications for the structural behavior. SSI impacts, encompassing lateraltorsional coupling and alterations in base shear, hold a crucial role in transforming the seismic responseof structures, particularly in the presence of extreme seismic occurrences. Studies underscore thesignificance of genuinely integrating SSI considerations into the structural design processes to preciselyforecast parameters like natural period, modal mass contribution, lateral displacement, and base shearforces. The inclusion of SSI in the analyses holds the potential to induce modifications in the structure'sperformance, underscoring the essential need to account for the soil's flexibility and its interplay withthe foundation. The incorporation of SSI considerations can markedly influence the foundation shear ofstructures, with the extent of these impacts contingent upon variables such as pile length, diameter, andsoil characteristics. Dynamic models delineating soil-structure interaction are imperative for accuratelyassessing the behavior of structures upheld by pile foundations and comprehending the energytransmission mechanisms within the soil. The study investigates the influence of soil-structureinteraction on seismic responses of multi-storey buildings, comparing the Winkler method and soilcontinuum method through time-history analysis in SAP۲۰۰۰ software, highlighting structural behaviorchanges and uncertainties under SSI conditions.

کلیدواژه ها:

Dynamic interaction ، seismic response ، soil properties ، resilience.