Seismic Analysis of Elastoplastic MDOF Structures
Publication: Journal of Structural Engineering
Volume 114, Issue 6
Abstract
Approximate methods for the estimation of maximum story drift in elastoplastic multidegree‐of‐freedom (MDOF) shear buildings are examined. The structures considered have fundamental periods in the range of 0.4–4.0 seconds and have one, two, three, five, and ten degrees of freedom. Responses for maximum ductility levels of one (elastic), two, five, and ten are considered. Two methods for predicting the maximum story drift are developed and evaluated. In the first method, the response of the multidegree‐of‐freedom inelastic system is estimated by applying two deamplification factors to the elastic spectrum of the single degree‐of‐freedom system. The second technique identifies an equivalent linear multidegree‐of‐freedom system. The effects of the number of degrees of freedom and the maximum ductility level on the deamplification factors and the equivalent linear parameters are described.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 114 • Issue 6 • June 1988
Pages: 1339 - 1353
Copyright
Copyright © 1988 ASCE.
History
Published online: Jun 1, 1988
Published in print: Jun 1988
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