Friction Pendulum Seismic Isolation
The friction pendulum is composed of steel and friction materials like friction pendulum bearing. The natural vibration period of the upper structure is extended by the relative sliding of the spherical sliding surface. The appropriate radius of curvature of the sliding surface is selected according to the required natural vibration period. The damping coefficient is controlled by the friction coefficient; The sliding limit bolt is set to ensure the stability of the building in non-earthquake, and easy to cut in earthquake to ensure the deformation capacity.
Features of Friction Pendulum Seismic Isolation
Self-reset after earthquake.
The vibration period has nothing to do with the carried mass.
Application of triple friction pendulum bearing
The friction pendulum system are mainly used in friction pendulum seismic isolation design and seismic reinforcement renovation of buildings, bridges and other civil structures.
Specification of triple pendulum bearing
Support specification Vertical bearing capacity Support height Vertical compression stiffness Friction coefficient (slow) 0.02 Friction coefficient (fast) 0.05
Stiffness before yield Equivalent stiffness Stiffness before yield Equivalent stiffness
FPS II-Vertical bearing capacity (kN)- Hb Kv Kp Keff Kp Keff
Ultimate displacement (mm)-Swing period (s) kN mm kN/mm N/mm N/mm N/mm N/mm
FPS II.81 1000 105 66 20000 998
FPS II.81 2000 125 1333 16000 1132 40000 1996
FPS II.81 3000 140 2000 24000 1697 60000 2993
FPS II.81 4000 155 2667 32000 2263 80000 3991
FPS II.81 5000 170 3333 40000 2829 100000 4989
FPS II.81 6000 185 4000 48000 3395 120000 5987
FPS II.81 7000 200 4667 56000 3960 140000 6984
For more information about vibration isolation material, please feel free to contact us!
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