International Journal of High-Rise Buildings (국제초고층학회논문집)

Council on Tall Building and Urban Habitat Korea (한국초고층도시건축학회)
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Long-term Mechanical Behavior of CFRP-strengthened Steel Members for a Truss Tower

  • Nakamoto, Daiki (Dept of Architecture and Civil Eng., Toyohashi University of Technology) ;
  • Yoresta, Fengky Satria (Dept of Architecture and Civil Eng., Toyohashi University of Technology) ;
  • Matsui, Takayoshi (Dept of Architecture and Civil Eng., Toyohashi University of Technology) ;
  • Mieda, Genki (Dept of Architecture, National Institute of Technology (KOSEN)) ;
  • Matsuno, Kazunari (Dept of Architecture, National Institute of Technology (KOSEN)) ;
  • Matsumoto, Yukihiro (Dept of Architecture and Civil Eng., Toyohashi University of Technology)
  • Published : 2020.12.01
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Abstract

This research aimed to clarify the long-term mechanical performance of a steel truss member strengthened by a carbon fiber-reinforced polymer (CFRP) without protective coating through exposure testing. Strengthening and repair methods using CFRP have been developed in recent years; however, there is a lack of durability research for CFRP-strengthened members, especially mechanical performance investigation according to actual exposure testing. In this study, 10 CFRP-strengthening steel specimens were created in 2015, and elastic bending tests were conducted biannually. Eventually, although resin loss occurred due to environmental effects, the mechanical performance of CFRP-strengthened steel was not degraded, and we propose a calculation method of bending stiffness to evaluate the lower value of stiffness for design.

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References

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