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Erschienen in:
2022 | OriginalPaper | Buchkapitel
SSI Effects on the Behavior of a Low-Rise RC Framed Building Including Foundation
verfasst von : Shivi Nigam, Meenu Sunil, Neha, Navjeev Saxena
Erschienen in: Earthquakes and Structures
Verlag: Springer Singapore
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Abstract
The process of soil response influencing the motion of the structure and vice versa is termed as soil-structure interaction. Conventionally, SSI has been considered to pose beneficial effects on the seismic response of a structure because of causing the structure to be more flexible resulting in an increased natural period and enhanced effective damping ratio. These modifications suggest a reduction in base shear demand for a structure as compared to its fixed-base counterpart. This study presents analyses of four-storeyed ordinary RC framed structures assuming the base of the column as fixed and supported on stiff, medium and soft soil springs. The study also includes isolated rectangular concrete footing fixed at the base and supported on the same springs as used in the structure. The results are somewhat different than the assumption of fixed-base analyses being always conservative. The study also suggests appropriate modeling to capture maximum response in structural members.