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dc.creatorBlagojević, Nikola
dc.creatorKostić, Svetlana
dc.date.accessioned2023-11-15T11:26:01Z
dc.date.available2023-11-15T11:26:01Z
dc.date.issued2018
dc.identifier.urihttps://grafar.grf.bg.ac.rs/handle/123456789/3261
dc.description.abstractThe use of concrete filled steel tubes (CFT columns) in seismically active regions is becoming more common and widespread due to numerous advantages they offer over steel and reinforced concrete columns, such as increased ductility, buckling delay and good cyclic performance. Since the behavior of CFT columns is highly nonlinear, a numerical model needs to consider different nonlinear effects. The model proposed in this paper adopts the nonlinear force based beam/column element that takes into account the nonlinear behavior of steel and concrete, confinement effects and geometrical nonlinearities. Through a parametric study, different material models for steel and concrete, widely available in commercial software programs, are evaluated and the constitutive model parameters that best approximate the behavior of CFT columns under static loading conditions are determined. This numerical model is then validated through a comparison with a number of experimental tests from the literature. Different types of loading (cyclic static and dynamic), types of structures with different slenderness of tested specimens and B/t ratio are considered. In addition, limitations of the proposed fiber element model for modelling CFT columns are emphasized.sr
dc.language.isoensr
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/42012/RS//sr
dc.rightsopenAccesssr
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.source16th European Conference on Earthquake Engineering-Thessaloniki, 18 - 21 June, 2018sr
dc.subjectcomposite columnssr
dc.subjectdistributed plasticitysr
dc.subjectnumerical analysissr
dc.subjectuniaxial material modelsr
dc.subjectOpenSEESsr
dc.titleNonlinear Analysis of Square CFT Columns with Fiber Beam/Column Elementsr
dc.typeconferenceObjectsr
dc.rights.licenseBY-NC-NDsr
dc.identifier.fulltexthttp://grafar.grf.bg.ac.rs/bitstream/id/12280/NonlinearAnalysisOfCFTColumnsWithFiberBeamColumnElementsFINAL.pdf
dc.identifier.rcubhttps://hdl.handle.net/21.15107/rcub_grafar_3261
dc.type.versionpublishedVersionsr


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