Technical Note: Potential to Use Shape Memory Alloy in Timber Dowel-Type Connections

Authors

  • Wen-Shao Chang
  • Satoru Murakami
  • Kohei Komatsu
  • Yoshikazu Araki
  • Kshitij Shrestha
  • Toshihiro Omori
  • Ryosuke Kainuma

Keywords:

Timber structures, dowel-type connections, shape memory alloy

Abstract

The aim of this article is to demonstrate the potential of using shape memory alloy (SMA) as a dowel in timber connection to provide a recenterable effect and higher energy dissipation capacity. Two dowel-type timber connections were fabricated for double shear tests under cyclic loadings. The results not only showed that the timber connection with SMA dowel has a good recentering effect, but also has a higher energy dissipation capacity that will outperform the steel-doweled connection in the long term and constant vibration in structures. This article also calls for the need to investigate how this system can be used in conjunction with normal steel dowels and to develop a stronger SMA to satisfy the strength and stiffness requirements of timber connections.

References

Araki Y, Maekawa N, Omori T, Sutou Y, Kajnuma R, Ishida K (2012) Rate-dependent response of superelastic Cu-Al-Mn alloy rods to tensile cyclic loads. Smart Mater Struct 21(3):032002.nCEN (2003) Eurocode 5. Design of timber structures—Part 1-1: General rules and rules for buildings. Comité Européen de Normalisation, Bruxelles, Belgium.nDolce M, Cardone D, Marnetto R (2000) Implementation and testing of passive control devices based on shape memory alloys. Earthquake Eng Struc 29(7):945-968.nPalermo A, Giorgini S, Pampanin S, Buchanan AH (2011) Potential of longitudinal post-tensioning for short-to-medium span timber bridges. Struct Eng Int 21(3): 349-355.n

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Published

2013-07-17

Issue

Number 3 / July 2013

Section

Research Contributions

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