Enhanced performance through a dual isolation seismic protection system

While base isolation successfully decreases the accelerations transmitted to a structure, a tradeoff is large unfavorable displacements in the isolation layer. This study investigates an innovative system, termed ‘dual isolation’, which applies two layers of isolation at the base and at mid‐story to resolve this issue. A linear analytical solution for the equation of motion of the proposed system is developed on the basis of linear isolation …