Title:
Analytical and experimental study on slender concrete-filled steel tube columns and beam-columns

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dc.contributor.advisor Leon, Roberto T.
dc.contributor.advisor Hajjar, Jerome F.
dc.contributor.author Perea, Tiziano en_US
dc.contributor.committeeMember Donald W. White
dc.contributor.committeeMember Lawrence F. Kahn
dc.contributor.committeeMember Reginald DesRoches
dc.contributor.committeeMember Richard W. Neu
dc.contributor.department Civil and Environmental Engineering en_US
dc.date.accessioned 2011-03-04T21:18:12Z
dc.date.available 2011-03-04T21:18:12Z
dc.date.issued 2010-11-15 en_US
dc.description.abstract The use of composite steel-concrete columns and beam-columns in many structural systems is increasing globally due to the intrinsic synergy when these materials are designed and detailed together properly. However, limited test data are available to justify the structural system response factors and comprehensive design equations in current design specifications. This research, through the testing of 18 full-scale, slender concrete-filled steel tube (CFT) beam-columns, attempts to address the latter need. The circular and rectangular CFT specimens tested for this research are by far the longest and the most slender full-scale CFT members tested worldwide. These CFT specimens were subjected to a complex load protocol that includes pure compression, uniaxial and biaxial bending combined with compression, pure torsion, and torsion combined with compression. In addition, data from the hydrostatic pressure on the steel tubes due to the fresh concrete at casting was evaluated. The single most important contribution of this research is the clarification of the interaction between strength and stability in slender composite concrete-filled columns and beam-columns. Parallel to the experimental study, advanced computational analyses were carried out to calibrate material and element models that characterize the salient features of the observed CFT response, such as steel local buckling and residual stresses, concrete confinement, stability effects, strength, and stiffness degradation, among others. Based on the observed behavior, simplified guidelines for the computation of the strength and stiffness parameters for CFT columns and beam-columns are proposed for design purposes. en_US
dc.description.degree Ph.D. en_US
dc.identifier.uri http://hdl.handle.net/1853/37303
dc.publisher Georgia Institute of Technology en_US
dc.subject Stability en_US
dc.subject Buckling en_US
dc.subject Columns en_US
dc.subject CFT en_US
dc.subject Composite en_US
dc.subject.lcsh Concrete-filled tubes
dc.subject.lcsh Girders
dc.subject.lcsh Flexure
dc.subject.lcsh Strains and stresses
dc.title Analytical and experimental study on slender concrete-filled steel tube columns and beam-columns en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.corporatename School of Civil and Environmental Engineering
local.contributor.corporatename College of Engineering
relation.isOrgUnitOfPublication 88639fad-d3ae-4867-9e7a-7c9e6d2ecc7c
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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