Residual Displacement Demand Evaluation from Spectral Displacement

Authors : Müberra ESER AYDEMİR, Cem AYDEMİR

Pages : 8913-8935

Doi:10.18400/tekderg.344597

View : 7 | Download : 1

Publication Date : 2019-03-01

Article Type : Research Paper

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 insert ignore into journalissuearticles values(T);, ductility insert ignore into journalissuearticles values(µ);, strain hardening ratio insert ignore into journalissuearticles values(α); and spectral displacement insert ignore into journalissuearticles values(S d );.  
Keywords : Residual displacement, stiffness degradation, ductility demand, spectral displacement