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Retrofitting Notch Damaged Box Steel Beams with Composite Materials

  • Structural Engineering
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Abstract

An experimental program was designed to investigate the structural behavior of retrofitted notch damaged box steel beams using Fiber - Reinforced Polymer (FRP) under flexure up to failure. The experimental program included twelve box steel specimens; one intact specimen, one notched specimen and ten notches damaged specimen and repaired with FRP sheets. All the tested beams have 1000 mm length. The notches specimens were notched at the tension flanges at 400 mm distance from the beam edge to simulate a localized and non-uniformly distributed deterioration along the beam length. The beams were repaired by bonding the FRP to the tension flange only, and the sheets were wrapped to cover a part of the two webs for the two beam halves or for the half of the beam that includes the notch with different heights. All the tested beams were simulated using a Finite Element (FE) program, and the FE model gives good results in comparison with the test results. The presented results indicate that wrapping CFRP sheet around the two webs for the half of the beam that includes the notch only gives an acceptable structural performance in comparing with wrapping CFRP sheet around the two webs for two halves of the beam and in this beam, the difference in the deflections of the two halves of the beam at the ultimate load does not increase than 3.2%.

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Authors and Affiliations

  1. Civil Engineering Dept., Faculty of Engineering, Minoufia University, Minoufia, Egypt

    Boshra El-Taly

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  1. Boshra El-Taly
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El-Taly, B. Retrofitting Notch Damaged Box Steel Beams with Composite Materials. KSCE J Civ Eng 22, 3003–3014 (2018). https://doi.org/10.1007/s12205-017-0293-7

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  • DOI: https://doi.org/10.1007/s12205-017-0293-7

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