Fatigue behavior of post-installed shear connectors used to strengthen continuous non-composite steel bridge girders

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dc.contributor.advisorEngelhardt, Michael D.
dc.contributor.advisorWilliamson, Eric B., 1968-
dc.contributor.committeeMemberHelwig, Todd A
dc.contributor.committeeMemberJirsa, James O
dc.contributor.committeeMemberTaleff, Eric M
dc.creatorGhiami Azad, Amir Reza
dc.date.accessioned2016-10-19T16:49:14Z
dc.date.accessioned2018-01-22T22:30:50Z
dc.date.available2016-10-19T16:49:14Z
dc.date.available2018-01-22T22:30:50Z
dc.date.issued2016-08
dc.date.submittedAugust 2016
dc.date.updated2016-10-19T16:49:14Z
dc.description.abstractMany older bridges in Texas are constructed with floor systems consisting of a concrete slab over steel girders. A potentially economical means of strengthening these floor systems is to connect the existing concrete slab and steel girders using post-installed shear connectors to change the behavior of the beam from non-composite to partially-composite. Since fatigue is one of the main concerns in designing bridges, investigating the fatigue properties of these post-installed shear connectors becomes crucial. Results from direct-shear testing show that post-installed shear connectors have a better fatigue life compared to conventional welded shear studs. However, based on currently available data from direct-shear tests, fatigue life of post-installed shear connectors is still inadequate for economical retrofit in some cases. Furthermore, it is unclear if direct-shear tests provide an appropriate means of evaluating fatigue performance. The objective of this dissertation is to develop new and more accurate approaches for evaluating the fatigue characteristics of post-installed shear connectors. This objective is addressed through large-scale beam fatigue tests and computational studies. The focus of the work is on evaluating fatigue life of shear connectors based on both slip and stress demands.
dc.description.departmentCivil, Architectural, and Environmental Engineering
dc.format.mimetypeapplication/pdf
dc.identifierdoi:10.15781/T2R49GB4W
dc.identifier.urihttp://hdl.handle.net/2152/41752
dc.language.isoen
dc.subjectFatigue
dc.subjectShear connector
dc.subjectBridge
dc.subjectSteel
dc.subjectComposite
dc.subjectNon-composite
dc.subjectPartially-composite
dc.subjectPost-installed
dc.subjectRetrofit
dc.subjectStrengthen
dc.subjectSlip
dc.subjectLarge-scale
dc.subjectUT slip
dc.subjectMethodology
dc.subjectCheck
dc.subjectContinuous
dc.subjectGirder
dc.subjectBehavior
dc.subjectExperimental
dc.subjectNumerical
dc.subjectComputational
dc.titleFatigue behavior of post-installed shear connectors used to strengthen continuous non-composite steel bridge girders
dc.typeThesis
dc.type.materialtext

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