Journal article

Inelastic Displacement Demand of Strength-Degraded Structures

Elisa Lumantarna, Nelson Lam, John Wilson, Michael Griffith

JOURNAL OF EARTHQUAKE ENGINEERING | TAYLOR & FRANCIS LTD | Published : 2010

Abstract

This article presents findings from parametric studies involving nonlinear time-history analyses of inelastic systems with and without strength degradation. Results showed that estimates based on the equal-displacement and equal-energy propositions can be exceeded significantly by the inelastic displacement demands in the acceleration and velocity-sensitive regions of the response spectrum. The displacement demand behaviour is sensitive to the strength degradation and the frequency properties of the ground shaking. With a modest strength reduction factor of 2, the inelastic displacement demand would typically be constrained by the Peak Displacement Demand as indicated on the elastic displace..

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Grants

Awarded by Australian Research Council


Funding Acknowledgements

Support by the Australian Research Council through funding for Discovery Projects DP0450933 and DP0772088 are gratefully acknowledged.