Performance of Earthquake Isolation Systems
Publication: Journal of Engineering Mechanics
Volume 116, Issue 2
Abstract
A comparison of the performances of three different base‐isolation systems, the laminated rubber bearing system, the New Zealand system, and the resilient‐friction base isolator system, is made under the same set of criteria. Conclusions pertaining to the ranges of the applicability of the systems for three earthquake sizes, M 6.0, 6.7, and 7.3, are obtained for a site located in the vicinity of the earthquake source (nominal source‐to‐site ). Two different seismological models of the earthquake source were used in modeling the spectral content of the earthquake input. The stochastic response of one‐story and five‐story base isolated structures is computed. The equivalent linearization technique is used to linearize the equations that govern those systems that are nonlinear. This study confirms the conclusions reached in previous studies by demonstrating again that friction plays an important role in energy absorption. This is the reason for the apparent superior performance of the resilient‐friction base isolator; system. However, more studies are needed to assess the feasibility of this system and to better understand its behavior by testing.
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Information & Authors
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Published In
Journal of Engineering Mechanics
Volume 116 • Issue 2 • February 1990
Pages: 446 - 461
Copyright
Copyright © 1990 ASCE.
History
Published online: Feb 1, 1990
Published in print: Feb 1990
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