Nonlinear seismic fragility assessment of tall buildings equipped with tuned mass damper (TMD) and considering soil-structure interaction effects

Tuned mass dampers (TMDs) are widely implemented in many types of structures, such as tall buildings, wind turbines, towers, and bridges, to enhance the structural performance subjected seismic loading. In present study, we aim comprehensively investigate effectiveness TMD, by performing vulnerability assessment a 20-story steel building equipped with TMD considering soil-structure interaction (SSI) effects. A suite high-fidelity three-dimensional nonlinear finite element simulations—in which constitutive models adopted for both components soil, Domain Reduction Method (DRM) Perfectly Matched Layer (PML) utilized inject ground motions represent semi-infinite contents soil media, respectively—are conducted obtain responses. Finally, is examined comparing fragility curves obtained under different conditions, i.e., without SSI. It observed that can notably decrease demands, while SSI effects increase especially strong earthquakes.