This study proposes a suspension-type parallel link mechanism as a vertical seismic isolation system for buildings. Numerical analyses and shaking table experiments clarified its vertical dynamic characteristics. Results show the system reduces vertical acceleration responses when friction and damping are minimized, while maintaining stability under different loads. The parallel mechanism eliminates shear force transmission devices, offering advantages in cost and constructability. Verification through element and scaled model tests confirmed the analytical model’s validity and demonstrated the feasibility of applying this mechanism to three-dimensional seismic isolation.
