The Use of High-Strength Composites in the Reinforcement of Timber

Abstract:

The use of high-strength composites in the reinforcement of structural timber has been documented to enhance the strength and stiffness of wood structural members. Global reinforcement is applied over the entire surface of the reinforced member. Local reinforcement is a targeted strengthening of highly-stressed zones susceptible to failure. Both types of reinforcement enhance the capacity of the reinforced members and mitigate brittle failure modes. This paper presents an overview of the application of fiber-based composites in the reinforcement of beams, columns and connections of timber structures and discusses the state-of-the-art technologies in reinforcement. The applications are illustrated on the reinforcement of beams, arches, frames and beam-to-column connections.

• Periodical: Advanced Materials Research (Volumes 133-134)
• Pages: 941-946
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.133-134.941
• Online since: October 2010
• Authors: Bohumil Kasal, Andreas Heiduschke
• Keywords: Brittle Failure, Composite Reinforcement, Failure Mitigation, Wood

References

[1] (2004) Sika website. [Online]. Available: http: /www. sika. de/7205_sika_carbodur-lamelle. pdf/, Sika CarboDur - pultruded CFRP lamella for reinforcing RC structures.

[2] Blass, H J, Romani, M, and Schmid, M (2003). Optimierung von Verbundträgern aus Brettschichtholz mit Verstärkungen aus Faserverbundkunststoffen., Forschungsbericht Karlsruhe, Germany.

[3] Blass, R, and Kasal, B (2009). Modeling of composite layered laminated arches, in Proceedings from Computational Modeling and Advanced Simulations, Bratislava, Slovak Republic.

[4] Borri, A M, Corradi, A, Grazini (2005). A method for flexural reinforcement of old wood beams with CFRP materials., Composites Part B: Engineering, 36(2) 143-153.

DOI: 10.1016/j.compositesb.2004.04.013

[5] Clarke, J L, ed. (1996). EUROCOMP - Design Code and Handbook. Structural Design of Polymer Composites., E&FN SPON, London.

[6] DIN 1052: 2008-12. Design of timber structures - General rules and rules for buildings., Berlin, Germany.

[7] Haller, P (2007). Concepts for textile reinforcements for timber structures., Material and Structures. 40, 107-118.

DOI: 10.1617/s11527-006-9153-5

[8] Heiduschke, A, Haller, P (2008) Performance of composite-reinforced timber joints using single dowel-type fasteners, in 10th World Conf. on Timber Engineering, Miyazaki, Japan.

[9] Kasal, B (2004). Mechanical properties of wood., Book chapter in Encyclopedia of Forest Science, 1815-1828. Elsevier Publishing Co., Oxford, England. (Burley, J., J. Evans, and J. Younquist, Editors). ISBN 0121451207.

[10] Kasal, B, and Heiduschke A (2004) Radial reinforcement of glue laminated wood beams with composite materials., Forest Product Journal, 54 (1): 74-79.

[11] Kasal, B, and Heiduschke, A (2004). Radial reinforcement of glue laminated wood beams with composite materials., Forest Product Journal, 54 (1): 74-79.

[12] Kasal, B, Heiduschke, A, and Haller, P (2002). Fiber-reinforced beam-to-column connections for seismic applications, in Proceedings of CIB W18 meeting. 35-7-12, Kyoto, Japan.

[13] Kempe, O (2007). Ertüchtigung bestehender Holzkonstruktionen mit Hilfe faserverstärkter Kunststoffe" 7. Holzbauforum, Leipzig, Germany, HUSS Medien.

[14] Pizhong, Q J F, Davalos, M G, Zipfelh (1998). Modeling and optimal design of compositereinforced wood railroad crosstie., Composite Structures, 41( 1), 87-96.

DOI: 10.1016/s0263-8223(98)00051-8

[15] Tanaka, H, Ono, T, and Idota, H (2006). Evaluation of Buckling Strength of Hybrid Timber Columns Reinforced with Steel Plates and Carbon Fiber Sheets, in Proc. 9th WCTE. Portland.