Abstract
Pultruded glass fibre reinforced polymer (GFRP) profiles are increasingly finding their way in civil engineering structural applications. The design of GFRP connections between profiles is of great relevance, as they influence the members’ deflections and often govern design at ultimate limit states, being prone to brittle failure modes. The first part of this paper presents an experimental campaign on the monotonic and cyclic behaviour of beam-to-column connections using stainless steel cleats. Stainless steel was chosen for the cleats owing to its corrosion resistance (compatible with GFRP) and its ductility. In order to maximize strength and/or ductility, several cleat configurations were tested, varying their wall thickness, length, number of bolts and back flange reinforcement. The results show that this connection system, particularly with back flange reinforcement, presents significant ductility and energy dissipation capacity. In the second part of the paper, a design-oriented analytical study is presented, based on the component method and (common) steel structural design procedures, to estimate the stiffness and strength of the connections – the method was able to predicted with reasonable accuracy the behaviour of the connections.
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References
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Martins DM, Gonilha JG, Correia JR, Silvestre NS (2020a) Beam-to-column bolted connections between GFRP I-shaped pultruded profiles using stainless steel cleats. Part 1: experimental studies. In: Submitted for publication in Composite Structures
Martins DM, Gonilha JG, Correia JR, Silvestre NS (2020b) Beam-to-column bolted connections between GFRP I-shaped pultruded profiles using stainless steel cleats. Part 2: initial stiffness and strength estimations. In: Submitted for publication in Composite Structures.
Acknowledgements
The authors wish to thank CERIS and LAETA for funding this research. The financial support of Fundação para a Ciência e a Tecnologia (FCT, project FRP-Quake PTDC/ECM-EST/6465/2014), is gratefully acknowledged. The first author is also grateful to FCT for their scholarships SFRH/BD/141089/2018, respectively. Nuno Silvestre also acknowledges the financial support provided by FCT, through IDMEC, under LAETA, project UID/ EMS/50022/2019.
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Martins, D., Gonilha, J., Correia, J.R., Silvestre, N. (2022). GFRP Beam-To-Column Connections Using Stainless Steel Cleats. In: Ilki, A., Ispir, M., Inci, P. (eds) 10th International Conference on FRP Composites in Civil Engineering. CICE 2021. Lecture Notes in Civil Engineering, vol 198. Springer, Cham. https://doi.org/10.1007/978-3-030-88166-5_149
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DOI: https://doi.org/10.1007/978-3-030-88166-5_149
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