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Structural Engineering and Mechanics Volume 90, Number 2, April25 2024 , pages 127-142 DOI: https://doi.org/10.12989/.2024.90.2.127 |
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Pultruded GFRP box beams: State-of-the-art review on constituents and structural behavior |
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Mozhdeh Dehshirizadeh, Abolfazl Eslami, Mehdi Khodadad Sar-Yazdi and Hamid R. Ronagh
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| Abstract | ||
| In recent decades, pultruded glass fiber-reinforced polymer (GFRP) members including those of box sections have attracted the attention of researchers. Nevertheless, the lack of uniform and consistent material properties, simplified design methods, and practical design codes have so far been the main barrier for field applications. Consequently, this paper highlights the existing knowledge concerning the flexural behavior of pultruded GFRP profiles and their failure modes. In particulate, it reviews the most commonly accepted design expressions and code provisions addressing the flange local buckling of pultruded GFRP box beams as the most likely failure mode. In addition, the material characterization of GFRP sections is described in detail along with the standard test methods to quantify the material characterization of GFRP laminates. It is shown that the critical flange local buckling stresses of pultruded GFRP box beams can be predicted with reliable accuracy using the expressions promulgated by ASCE (1984) (in which the flange plates are considered simply-supported at web-flange junction) and EUR 27666. The expressions stipulated in ASCE (2010) highly overestimates the critical flange local buckling stresses of GFRP box beams resulting in unconservative predictions. | ||
| Key Words | ||
| box section; design expressions; flange local buckling; material properties; pultruded GFRP | ||
| Address | ||
| Mozhdeh Dehshirizadeh, Abolfazl Eslami, Mehdi Khodadad Sar-Yazdi: Department of Civil Engineering, Yazd University, Iran Hamid R. Ronagh: Department of Civil Engineering, Yazd University, Iran; 2epartment of Civil and Environmental Engineering, The University of New South Wales, Australia | ||