Long-term Mechanical Behavior of CFRP-strengthened Steel Members for a Truss Tower

Authors

  • Daiki Nakamoto Dept of Architecture and Civil Eng., Toyohashi University of Technology, Toyohashi, Aichi, Japan Author
  • Fengky Satria Yoresta Dept of Architecture and Civil Eng., Toyohashi University of Technology, Toyohashi, Aichi, Japan , Engineering and Building Design Laboratory, Bogor Agricultural University, Bogor, Indonesia Author
  • Takayoshi Matsui Dept of Architecture and Civil Eng., Toyohashi University of Technology, Toyohashi, Aichi, Japan Author
  • Genki Mieda Dept of Architecture, National Institute of Technology (KOSEN), Kure College, Kure, Japan Author
  • Kazunari Matsuno Dept of Architecture, National Institute of Technology (KOSEN), Kure College, Kure, Japan Author
  • Yukihiro Matsumoto Dept of Architecture and Civil Eng., Toyohashi University of Technology, Toyohashi, Aichi, Japan Author

Keywords:

Exposure test, Bending test, CFRP, Strengthening, Steel tower

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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Published

2020-12-31

Issue

Vol. 9 No. 4 (2020)

Section

Articles