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# Soil structure interaction effects on structural parameters for stiffness degrading systems built on soft soil sites” Structural Engineering and Mechanics

 dc.contributor.author ESER AYDEMİR, Müberra dc.date.accessioned 2014-01-24T13:30:42Z dc.date.available 2014-01-24T13:30:42Z dc.date.issued 2013 dc.identifier.citation 45:(5), 655-676, (2013). en_US dc.identifier.uri http://hdl.handle.net/11547/761 dc.description.abstract In this study, strength reduction factors and inelastic displacement ratios are investigated for SDOF systems with period range of 0.1-3.0 s considering soil structure interaction for earthquake motions recorded on soft soil. The effect of stiffness degradation on strength reduction factors and inelastic displacement ratios is investigated. The modified-Clough model is used to represent structures that exhibit significant stiffness degradation when subjected to reverse cyclic loading and the elastoplastic model is used to represent non-degrading structures. The effect of negative strain - hardening on the inelastic displacement and strength of structures is also investigated. Soil structure interacting systems are modeled and analyzed with effective period, effective damping and effective ductility values differing from fixed-base case. For inelastic time history analyses, Newmark method for step by step time integration was adapted in an in-house computer program. New equations are proposed for strength reduction factor and inelastic displacement ratio of interacting system as a function of structural period($\tilde{T}$, T) ductility (${\mu}$) and period lengthening ratio ($\tilde{T}$/T). en_US dc.language.iso en en_US dc.publisher Structural Engineering and Mechanics, en_US dc.subject soft soil sites en_US dc.title Soil structure interaction effects on structural parameters for stiffness degrading systems built on soft soil sites” Structural Engineering and Mechanics en_US dc.type Article en_US
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