Tensile Resistance of GFRP Wrapped Steel-Dowelled Half-Lap Timber Connection

  • Authors

    • Amirah Ali Chew
    • Nurul Atikah Seri
    • Wan Nur Syazni Wan Shaari
    • Mohd Hanafie Yasin
    • Rohana Hassan
    2018-07-21
    https://doi.org/10.14419/ijet.v7i3.11.15938
  • Bintagor, Yellow Meranti, ultimate load, timber connection.

  • Generally, the use of timber mainly focuses on simple structures or structures that can take small loads. This paper report on tensile resistance of steel dowelled timber connection wrapped with glass fibre reinforced polymer (GFRP). It involved experimental work in laboratory designed to determine the tensile strength behaviour for half-lap timber connections with steel dowel as the mechanical    fasteners. Bintangor species representing strength group 5 and Yellow Meranti species representing strength group 6 were tested in the conditions of with and without the GFRP wrapping. The performances of the connections were observed using the European Yield Model (EYM) as the guideline. The EYM theory is generally used to determine the load carrying capacity of timber-to-timber, panel-to-timber and steel-to-timber connections, reflecting all possible modes of failures. All half-lap connection members were tested at the rate     0.0006 mm/min using the universal testing machine. As a result, it was found that the steel-dowelled half-lap timber connection with GFRP wrapping performed better than the timber connection without the wrapping. The ultimate load of GFRP wrapped connections made of Bintangor and Yellow Meranti species were found increased at 17% and 44% higher compared to the connection without the GFRP wrapping accordingly.

     

     

  • References

    1. [1] B. H. Xu, A. Bouchair, M. Taazount and E. J. Vega, "Numerical and experimental analyses of multiple-dowel steel-to-timber joints in tension perpendicular to grain," Engineering Structures 31(10), 2357-2367 (2009).

      [2] NAHB research Center, "A State of the art Review and Application of Engineering Information of light Frames Homes Apartments and Townhouse," Residential Structural Design Guide, Page 7-1 to 7-68 for US Department of Housing and Urban Development office of Policy Development and Researches, Contract H-21065CA (2000).

      [3] P. Racher, K. Laplanche, D. Dhimab and A. Bouchaïr, "Thermo-mechanical analysis of the fire performance of dowelled timber connection," Engineering Structures 32, 1148-1157 (2010).

      [4] R. Hassan, A. Ibrahim and Z. Ahmad, "Performance of Mortise and Tenon Connection Fastened with Wood and Steel," Proceeding of world conference on timber engineering (WCTE), Italy (2010).

      [5] Z. Guan and INOUE, Masafumi, "Modelling of failure mechanisms of locally reinforced timber fasteners," Prog. Struct. Engng (2008).

      [6] G. Freedman, "Development of Timber Engineering in the UK," BSc CEng CEnv FICE FIAgrE (2008).

      [7] M. Dorn, K. Borst and J. Eberhardsteiner, "Experiments on

      [8] dowel-type timber connections," Engineering Structures 47 (2013) 67–80 (2013).

      [9] K. W. Johansen, "Theory of Timber Connections. Publications of International Association For Bridge and Structural Engineering," Vol 9: Pg. 249-262 (1949).

      [10] C. Gentile, D. Svecova and S. H. Rizkalla, "Timber Beams Strengthened with GFRP Bars: development and applications," Journal of Composites for Construction, 6(1):11-20 (2002).

      1. Yusof and A. Saleh, "Flexural strengthening of timber beams using glass fibre reinforced polymer," Electronic Journal of Structural Engineering10:45-56 (2010).

      [11] D. W. Radford, D. Van Goethem, R. M. Gutkowski and M. L. Peterson, "Composites repair of timber structures," Construction and Building Materials 16: 417-425 (2002).

      [12] M. B. Jorge, J. S. Paulo and M. Piazza, "Structural Analysis of Two King-post Timber Trusses: Non-destructive Evaluation and Load Carrying Capacity," Construction and Building Material, 24, 371-383 (2007).

      [13] M. B. Jorge, J. S. Paulo and M. Piazza, "Behaviour of dowel-type fasteners in timber-concrete connections," Master Thesis, Engineering School, University of Minho, Portugal, 120 p (2003).

      [14] British Standard. "Eurocode 5: Design of timber structures. Part 1-1: General-Common Rules and Rules for Building (1995)," BS EN 1995-1-1: 2004.

      [15] N. Harding and A. H. R. Fowkes, "Bolted Timber Joints," Proceedings, Pacific Timber Engineering Conference, Vol 3:872-883 (1984).

      [16] S. Nolan and F. Padilla. Fiber Reinforced Polymer (FRP). Reinforcing Bars and Strands. Structures Design / Design Innovation. Fiber Reinforced Polymer Reinforcing. Reported by Florida, Department of Transportation. Retrieved from http://www.fdot.gov/structures/innovation/FRP.shtm (2018).

  • Downloads

  • How to Cite

    Ali Chew, A., Atikah Seri, N., Nur Syazni Wan Shaari, W., Hanafie Yasin, M., & Hassan, R. (2018). Tensile Resistance of GFRP Wrapped Steel-Dowelled Half-Lap Timber Connection. International Journal of Engineering & Technology, 7(3.11), 101-104. https://doi.org/10.14419/ijet.v7i3.11.15938