Analytical fragility curves of shallow-founded structures subjected to Soil-Structure Interaction (SSI) effects. Issue 141 (February 2021)

• Record Type: Journal Article
• Authors: Forcellini, Davide
• Is Part Of: Soil dynamics and earthquake engineering. Issue 141(2021)
• Publication Date: 2021-02
• Subjects: Soil structure interaction -- Analytical fragility curves -- Non-linearity -- Numerical simulations -- Opensees; Soil dynamics -- Periodicals; Earthquake engineering -- Periodicals; Sols -- Dynamique -- Périodiques; Génie parasismique -- Périodiques; 624.176205
• DOI: 10.1016/j.soildyn.2020.106487
• Languages: English
• ISSNs: 0267-7261

Abstract

Abstract: Soil structure interaction (SSI) may affect significantly the seismic vulnerability of structures with several mechanisms that depend on the mutual effects of soil properties and structural characteristics. A probabilistic-based approach is here applied to evaluate the effects of SSI on the fragility assessment of two selected benchmark buildings: a Reinforced Concrete with Infill Masonry Walls (RCIMW) and a Reinforced Concrete (RC). Analytical fragility curves were developed by performing non-linear 3D numerical simulations with Opensees that implements hysteretic materials and advanced plasticity models for representing non-linear soil conditions and structural configurations. The effects of soil deformability and structural flexibility on the non-linear response of the system (soil-foundation-structure) were assessed and discussed by referring to four limit states (slight, moderate, extensive and collapse) with respect to the maximum inter storey drifts. Highlights: Soil structure interaction. Analytical fragility curves. 3D Numerical simulations. Opensees. Non-linearity.