Seismic Isolation Under the Base Mat of Structure Interacting With Soil. Part I. One‑Dimensional Linear Model

Authors:  
Rubric:     Theoretical and experimental studies   
Annotation:
Seismic isolation under the base mat has a special feature: the lower plate of the seismic isolation system (SIS) interacts with soil foundation. These SSI effects are of special importance for heavy structures. In terms of “platform model” there is a “soil support” with certain stiffness and damping installed under the lower base mat. SIS provides another support sequentially linked to the “soil support” via the lower base mat. The combined effect of these two supports depends on the combination of their parameters. In the paper the author uses the simplest one-dimensional model to study the impact of SIS on the seismic structural response considering SSI effects.