Inelastic Displacement Demand of Strength-Degraded Structures
Elisa Lumantarna, Nelson Lam, John Wilson, Michael Griffith
JOURNAL OF EARTHQUAKE ENGINEERING | TAYLOR & FRANCIS LTD | Published : 2010
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..View full abstract
Awarded by Australian Research Council
Support by the Australian Research Council through funding for Discovery Projects DP0450933 and DP0772088 are gratefully acknowledged.