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dc.contributor.authorBun, Say Hak
dc.contributor.authorBonet, Eric
dc.contributor.authorMatamoros, Adolfo
dc.contributor.authorBennett, Caroline
dc.contributor.authorLi, Jian
dc.contributor.authorRolfe, Stan
dc.date.accessioned2020-10-14T14:34:03Z
dc.date.available2020-10-14T14:34:03Z
dc.date.issued2015-09
dc.identifier.citationBun, S.H., Bonet, E., Matamoros, A., Bennett, C., Li, J., and Rolfe, S., "Improving Infrastructures Sustainability II: Repairing Existing Fatigue Cracks in Steel Bridges Using CFRP Materials," SM Report No. 110, The University of Kansas Center for Research, Inc., Lawrence, KS, September 2015, 36 pp.en_US
dc.identifier.urihttp://hdl.handle.net/1808/30770
dc.description.abstractDistortion-induced fatigue affects a large number of bridges of the US highway system. This type of damage is commonly observed at connections between cross-frames and steel girders. The differential displacement induced by bridge traffic induces forces in the cross frames that cause out-of-plane distortion of the web, inducing highly localized stresses at the welds that tie the connection plate used to attach the cross frame to the girder. This report describes the results of an experimental program to evaluate the use of composite materials to prevent and repair distortion-induced fatigue damage in web-gap regions of steel girders. In this method of repair, a composite block is cast in place in the area surrounding the cross-frame to girder connection to provide an alternate load path and reduce the stress demands in the welds of the connection. Two full-depth bridge girders were subjected to dynamic loading under a constant force range and allowed to develop fatigue cracks. The girders were subsequently repaired using composite blocks and subjected to several million fatigue cycles. Test results showed that the repair method was effective in halting the propagation of fatigue cracks in the bridge girders, and that it was particularly effective when anchor bolts were attached to the girder flange. The main body of the report focuses on the experimental study, while additional details regarding computational simulations of the composite block and fabrication techniques are provided in Appendices A and B.en_US
dc.description.sponsorshipThe Kansas Department of Transportationen_US
dc.publisherUniversity of Kansas Center for Research, Inc.en_US
dc.relation.ispartofseriesSM Report;110
dc.relation.isversionofhttps://iri.ku.edu/reportsen_US
dc.titleImproving Infrastructure Sustainability II: Repairing Existing Fatigue Cracks in Steel Bridges Using CFRP Materialsen_US
dc.typeTechnical Reporten_US
kusw.kuauthorBonet, Eric
kusw.kuauthorMatamoros, Adolfo
kusw.kuauthorBennett, Caroline
kusw.kuauthorLi, Jian
kusw.kuauthorRolfe, Stan
kusw.kudepartmentCivil, Environmental & Architectural Engineeringen_US
kusw.oastatusna
dc.identifier.orcidhttps://orcid.org/0000-0002-0435-3263en_US
dc.identifier.orcidhttps://orcid.org/0000-0002-5312-7764en_US
dc.rights.accessrightsopenAccessen_US


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