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dc.contributor.advisorBennett, Caroline R.
dc.contributor.advisorMatamoros, Adolfo
dc.contributor.authorRichardson, Temple
dc.date.accessioned2012-10-27T10:20:51Z
dc.date.available2012-10-27T10:20:51Z
dc.date.issued2012-08-31
dc.date.submitted2012
dc.identifier.otherhttp://dissertations.umi.com/ku:12221
dc.identifier.urihttp://hdl.handle.net/1808/10205
dc.description.abstractNumerous retrofits have been used to stop distortion-induced fatigue cracks from initiating and propagating in steel bridges. Some decrease stiffness in the web gap region to transfer the load path to an area of higher stiffness, while others increase the stiffness of the region to increase the capacity of the flexible web gap. The behavior of a bridge once a retrofit has been applied needs to be carefully considered because some retrofits may cause cracks to initiate in other locations or increase crack propagation rates. An analytical investigation of numerous retrofits is presented herein on a 2.7-m (9-ft) and a full bridge model with comparisons to configurations prior to retrofit application. This research is presented to extend the number of retrofit options to bridge maintenance engineers. This thesis is divided into three parts. Part I, "Evaluation of the Performance of Retrofit Measures for Distortion Induced Fatigue Using Finite Element Analysis" was presented at the joint conference of the National Steel Bridge Alliance and the World Steel Bridge Symposium in April 2012. The second part, "Finite Element Modeling Techniques for Crack Prediction and Control in Steel Bridge Girders" will be submitted for later publication. The final section, "Repair of Distortion-Induced Fatigue Cracks on 135-87-43/44 over Chisholm Creek" is a precursor to a final report that will be presented to the Kansas Department of Transportation.
dc.format.extent122 pages
dc.language.isoen
dc.publisherUniversity of Kansas
dc.rightsThis item is protected by copyright and unless otherwise specified the copyright of this thesis/dissertation is held by the author.
dc.subjectCivil engineering
dc.subjectApplied sciences
dc.subjectBridge
dc.subjectDistortion-induced
dc.subjectRetrofit
dc.subjectXfem
dc.titleAnalytical Investigation of Repair Methods for Fatigue Cracks in Steel Bridges
dc.typeThesis
dc.contributor.cmtememberRolfe, Stanley
dc.thesis.degreeDisciplineCivil, Environmental, & Architectural Engineering
dc.thesis.degreeLevelM.S.
kusw.oastatusna
kusw.oapolicyThis item does not meet KU Open Access policy criteria.
dc.rights.accessrightsopenAccess


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