Optimum Characteristics of Isolated Structures
Publication: Journal of Structural Engineering
Volume 111, Issue 12
Abstract
The effect of frequency content of the ground excitation on the optimum design of a base isolation system and a first‐story damping system is investigated. The ground excitation is modeled as a filtered white noise with Kanai‐Tajimi power spectral density. The stationary response, including peak response, is derived in closed form. Small “ground frequencies” result in considerable differences of the optimum design as compared with the one based on a white noise model of the excitation. Examples show the manner of applying the results to an ordinary two‐story structure. Time‐history analyses of the optimized structures confirm the results of the stochastic analysis.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 111 • Issue 12 • December 1985
Pages: 2733 - 2750
Copyright
Copyright © 1985 ASCE.
History
Published online: Dec 1, 1985
Published in print: Dec 1985
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