Onset of Motion of Curved Surface Sliders Used in Seismic-Isolation Systems
Publication: Practice Periodical on Structural Design and Construction
Volume 26, Issue 3
Abstract
Curved surface sliders are generally preferred for the seismic isolation of buildings because of their technical features, such as the fact that the value of the vibration period is theoretically independent of the mass. Given the experimental evidence that indicates that the isolated system did not work under low seismic actions, in this paper, the influence of the static friction on the global behavior of some structures is studied in detail. By adopting a suitable model of friction, the onset of motion is analyzed with reference to simple isolation systems in which the influence of the friction values and its variability among the isolation devices are analyzed. The results pointed out that the behavior of curved surface sliders is not independent of the vertical load and highlights the importance of a suitable choice of the design friction, which must be different for devices with different vertical loads.
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Data Availability Statement
All of the data, models, or code that support the findings of this study are available from the corresponding author on reasonable request.
Acknowledgments
The monitoring of the mentioned building in L’Aquila is part of the Seismic Observatory of Structures project, organized and managed by the Italian Department of the Civil Protection (DPC Osservatorio Sismico delle Strutture-OSS Download Service, http://www.mot1.it/ossdownload).
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Published In
Practice Periodical on Structural Design and Construction
Volume 26 • Issue 3 • August 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Aug 12, 2020
Accepted: Feb 19, 2021
Published online: Apr 21, 2021
Published in print: Aug 1, 2021
Discussion open until: Sep 21, 2021
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