What is it about?
After an earthquake, non-negligible residual displacements may affect the serviceability of a base isolated structure, if the isolation system does not possess a good restoring capability. The accumulation of residual displacements is investigated by means of shaking table tests and nonlinear dynamic analysis.
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Why is it important?
The permanent offset does not affect the performance unless the design is problematic for utilities, also considering possible concerns related to the maintenance of the devices.
Perspectives
This work focuses on a simplified estimation of the maximum expected residual displacements as function only of the characteristics of the isolation system, consistently with previous comprehensive studies
Antonio Di Cesare
Universita degli Studi della Basilicata
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This page is a summary of: Shake table testing on restoring capability of double concave friction pendulum seismic isolation systems, Earthquake Engineering & Structural Dynamics, April 2017, Wiley,
DOI: 10.1002/eqe.2907.
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