This study fabricated friction pendulum (FP) and rolling pendulum (RP) seismic isolation systems using 3D printing to conduct 1g shaking table tests of pile-supported structure models incorporating these systems. The test results indicate that, when the FP bearing was applied to the pile heads, the acceleration response of the structure decreased once the FP bearing began to operate; as the input earthquake frequency increased (1, 3, and 10 Hz), the seismic isolation system engaged at lower input accelerations (0.16, 0.11, and 0.02 g, respectively), and the deck acceleration response decreased significantly (15, 37, and 65%, respectively) compared to that in the fixed pile head condition. Similarly, when the RP bearing was applied to the pile heads, a higher input earthquake frequency (1, 3, and 10 Hz) corresponded to a greater decrease in the deck acceleration response (82, 95, and 96%, respectively) compared to that in the fixed condition. However, a significant deck displacement was observed when using the RP bearing owing to the resonance phenomenon when the natural period of the structure was similar to the frequency of the input earthquake. Therefore, since applying RP bearing is not desirable in terms of structural displacement, it is appropriate to apply FP bearing, which can avoid resonance by changing the natural period during the operation of the seismic isolation system.
Performance of Seismically Isolated Pile-supported Structures through 1 g Shaking Table Tests
KSCE J Civ Eng
KSCE Journal of Civil Engineering ; 27 , 9 ; 3836-3847
2023-09-01
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Horizontal shaking table tests on structures using innovative earthquake mitigation devices
Online Contents | 2009
|British Library Conference Proceedings | 2009
|Anti-liquefaction Performance of Stacked Sandbags: Shaking Table Tests and Numerical Simulations
Springer Verlag | 2022
|Assessment of Aseismic Performance of Ballasted Track with Large-scale Shaking Table Tests
Online Contents | 2011
|Development of dynamic p-y backbone curves for a single pile in dense sand by 1g shaking table tests
Springer Verlag | 2011
|