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Serviceability Prediction of Post-tension Rectangular Concrete-Filled FRP Tubes (CFFT) Beams

  • 2025
  • OriginalPaper
  • Chapter
Published in:
Authors
Asmaa Abdeldaim Ahmed
Mamdouh El-Badry
Published in
Proceedings of the Canadian Society for Civil Engineering Annual Conference 2024, Volume 13
Publisher
Springer Nature Switzerland

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Abstract

This chapter delves into the structural behavior of post-tensioned rectangular concrete-filled FRP tubes (CFFT) beams under flexural loading, focusing on serviceability prediction. The study outlines a simplified trilinear design approach for calculating the effective moment of inertia (Ie) at various loading stages, including pre-cracking, post-cracking, and post-yielding. Experimental work involved testing full-scale beams with different parameters such as concrete strength, GFRP tube thickness, and fiber laminate types. The results showed that increasing tube thickness and altering the structural laminate significantly improved ultimate loads and stiffness, while increasing concrete strength had a lesser impact. The chapter also presents a modified Branson's effective moment of inertia formula and compares predicted moment-deflection responses with experimental data, demonstrating reasonable accuracy. The findings highlight the potential of rectangular CFFTs in precast applications and the effectiveness of the simplified deflection expressions for predicting short-term deflection under flexural loading.
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previous chapter Rehabilitation of RC Bridge Girders with FRP for Climate Adaptation
next chapter Developing Bond-Slip Relationships for Adhesively Anchored GFRP Bars Using Hinge Beam Tests
Title
Serviceability Prediction of Post-tension Rectangular Concrete-Filled FRP Tubes (CFFT) Beams
Authors
Asmaa Abdeldaim Ahmed
Mamdouh El-Badry
Copyright Year
2025
Book
Proceedings of the Canadian Society for Civil Engineering Annual Conference 2024, Volume 13

Print ISBN: 978-3-031-96762-7

Electronic ISBN: 978-3-031-96763-4

Copyright Year: 2025

DOI
https://doi.org/10.1007/978-3-031-96763-4_9
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