Estimation of strength-reduction factors for elastoplastic systems: a new approach

A new rule is presented to estimate strength‐reduction factors in single‐degree‐of‐freedom elastoplastic oscillators, in which reduction factors depend only on displacement elastic spectra, so they are not an explicit function of structural period. It is found that the proposed rule yields good resu...

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Bibliographic Details
Published in:Earthquake engineering & structural dynamics 1998-09, Vol.27 (9), p.889-901
Main Authors: Ordaz, M., Pérez-Rocha, L. E.
Format: Article
Language:English
Subjects:
Earth sciences
Earth, ocean, space
elastoplastic systems
Engineering and environment geology. Geothermics
Exact sciences and technology
Natural hazards: prediction, damages, etc
strength-reduction factors
Online Access:Get full text
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Summary:A new rule is presented to estimate strength‐reduction factors in single‐degree‐of‐freedom elastoplastic oscillators, in which reduction factors depend only on displacement elastic spectra, so they are not an explicit function of structural period. It is found that the proposed rule yields good results when applied to accelerograms recorded in firm and soft soils, and for damping ratios of 2, 5 and 10 per cent of the critical. It is shown that the proposed reduction rule is more general than others previously published, and at least as accurate. © 1998 John Wiley & Sons, Ltd.
ISSN:0098-8847
1096-9845
DOI:10.1002/(SICI)1096-9845(199809)27:9<889::AID-EQE755>3.0.CO;2-W