Residual Displacement Demand Evaluation from Spectral Displacement
Authors : Müberra Eser Aydemir, Cem Aydemir
Pages : 8913-8935
Doi:10.18400/tekderg.344597
View : 10 | Download : 3
Publication Date : 2019-03-01
Article Type : Research
Abstract : In this study, residual displacement demands are investigated for SDOF systems with period range of 0.1-3.0 s for near-field and far-field ground motions. The effects of stiffness degradation and post yield stiffness ratio on residual displacements are investigated. The modified-Clough model is used to represent structures that exhibit significant stiffness degradation when subjected to reverse cyclic loading. The elastoplastic model is used to represent non-degrading structures. For inelastic time history analyses, Newmark’s step by step time integration method was adapted in an in-house computer program. Based on time history analyses, a new simple equation is proposed for residual displacement demand of a system as a function of structural period (T), ductility (µ), strain hardening ratio (α) and spectral displacement (S d ).Keywords : Residual displacement, stiffness degradation, ductility demand, spectral displacement