Fundamental Behavior of Steel-Concrete Composite Beams Strengthened with High Modulus Carbon Fiber Reinforced Polymer (CFRP) Materials

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dc.contributor.advisor Dr. Emmett Sumner, Committee Member en_US
dc.contributor.advisor Dr. Vernon Matzen, Committee Member en_US
dc.contributor.advisor Dr. Sami Rizkalla, Committee Chair en_US
dc.contributor.author Dawood, Mina Magdy Riad en_US
dc.date.accessioned 2010-04-02T18:09:10Z
dc.date.available 2010-04-02T18:09:10Z
dc.date.issued 2005-06-30 en_US
dc.identifier.other etd-06292005-192140 en_US
dc.identifier.uri http://www.lib.ncsu.edu/resolver/1840.16/1959
dc.description.abstract There is a growing need for a cost-effective, durable repair system that can be used for the repair and strengthening of steel bridges. Recently, high modulus carbon fiber reinforced polymers (CFRP) have been developed with a modulus of elasticity approximately two times greater than that of steel. Externally bonded high modulus CFRP materials have successfully been used to increase the elastic stiffness and ultimate capacity of steel-concrete composite beams However, since the technology is relatively new, the detailed behavior of steel bridge members strengthened with high modulus CFRP is not yet well understood. The current research investigates three aspects of the behavior of steel-concrete composite beams in detail. An experimental program was conducted to investigate the behavior of steel-concrete composite beams strengthened with high modulus CFRP materials. In the first phase of the study the behavior under overloading conditions was investigated. In the second phase of the research, the fatigue durability of the system was examined. In the third phase, the possible presence of shear-lag between the steel beam and the CFRP materials was investigated in detail. An analytical model was developed which can be used to determine the ultimate capacity and elastic stiffness increase for steel beams strengthened with high modulus CFRP materials. Additionally, a set of criteria are proposed which can be used to determine the allowable increase in the live load level for steel beams strengthened with high modulus CFRP materials. en_US
dc.rights I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. en_US
dc.subject High Modulus CFRP en_US
dc.subject Steel-Concrete Composite Beams en_US
dc.subject Overloading en_US
dc.subject Fatigue en_US
dc.subject Shear-lag en_US
dc.subject Moment-Curvature Analysis en_US
dc.title Fundamental Behavior of Steel-Concrete Composite Beams Strengthened with High Modulus Carbon Fiber Reinforced Polymer (CFRP) Materials en_US
dc.degree.name MS en_US
dc.degree.level thesis en_US
dc.degree.discipline Civil Engineering en_US


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