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Architectural Institute of Korea (대한건축학회)
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Bending-shear Strength of Concrete-filled Double Skin Circular Steel Tubular Beams with SMA and Rebar in Normal-and-High-strength Concrete

  • Lee, Seung Jo (Department of Architecture, Chosun College of Science & Technology) ;
  • Park, Jung Min (Department of Architecture, Kyungbuk College)
  • Received : 2020.09.21
  • Accepted : 2021.02.27
  • Published : 2021.03.30
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Abstract

A concrete-filled circular steel tube beam was fabricated, and a bending test was performed to analyze its failure modes, displacement ductility, bending-shear strength, and load-central deflection relationship. For the bending test, the installation position of the shape memory alloy (SMA) inside and outside the double-skin steel tube was used, and the rebar installation position, the concrete strength, the mixing of fibers, and the inner-outer diameter ratio as the main parameters. The test results showed that the installation positions of the reinforcements inside and outside the double-skin steel tube and the inner-outer diameter ratio of the steel tube affected the ductility, maximum load, and failure mode. In general, the specimen made of general concrete with SMA installed outside and inside (OI) the double-skin steel tube showed the best results.

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References

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