ABSTRACT
In Chapter 4, the study of active structural control was based on the fixed-base model in which the structure is assumed to be fixed at its base. This model may be well founded where the structure is built on rock. If the structure is constructed on soil, both the control algorithm and the structural system shall include the soilstructure interaction (SSI) that covers the flexibility of the soil and the displacement of the foundation. This leads to an increase in the number of the system’s degrees of freedom (d.o.f.) that changes the structural response behavior and accordingly controls action and effectiveness.
