Structures Congress 2019
Fatigue Life Enhancement for Steel Girders Using Ultra-High Modulus Carbon Fiber-Reinforced Polymer
Publication: Structures Congress 2019: Bridges, Nonbuilding and Special Structures, and Nonstructural Components
ABSTRACT
Fatigue stresses in steel bridges can cause cracks to propagate and slowly weaken the structural stability of the bridge. Traditional rehabilitation techniques have proven to be disadvantageous and do little to stop the crack from growing. This research looks into using ultra high modulus carbon fiber reinforced polymer (UHM CFRP) plates to extend the fatigue life of cracked steel beams. All of the steel specimens had the same initial crack length which was manually created. The goal of the experiments was to compare how much the fatigue lives of the cracked steel beams were extended by the regular application of the CFRP plates, compared to the application of the prestressed CFRP plates. All of the beams were tested under the same fatigue loading control. Many factors went into comparing the performance of the different reinforcement configurations, such as the midspan deflection of the beam, the strain in the beam, and the fatigue life of the repaired beam. By using UHM-CFRP plates, the fatigue life of cracked steel beams can increase.
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Published In
Structures Congress 2019: Bridges, Nonbuilding and Special Structures, and Nonstructural Components
Pages: 178 - 185
Editor: James Gregory Soules, McDermott International
ISBN (Online): 978-0-7844-8223-0
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: Apr 22, 2019
Published in print: Apr 22, 2019
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