Steel and Composite Structures

  • 제17권1호
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  • Pages.105-121
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  • 2014
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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Structural stability of fire-resistant steel (FR490) H-section columns at elevated temperatures

  • Kwon, In-Kyu (Department of Fire Protection Engineering, Kangwon National University) ;
  • Kwon, Young-Bong (Department of Civil Engineering, Yeungnam University)
  • 투고 : 2013.09.23
  • 심사 : 2014.02.27
  • 발행 : 2014.07.25
⟨ 이전 논문 다음 논문 ⟩

초록

A fundamental limitation of steel structures is the decrease in their load-bearing capacity at high temperatures in fire situations such that structural members may require some additional treatment for fire resistance. In this regard, this paper evaluates the structural stability of fire-resistant steel, introduced in the late 1999s, through tensile coupon tests and proposes some experimental equations for the yield stress, the elastic modulus, and specific heat. The surface temperature, deflection, and maximum stress of fire-resistant steel H-section columns were calculated using their own mechanical and thermal properties. According to a comparison of mechanical properties between fire-resistant steel and Eurocode 3, the former outperformed the latter, and based on a comparison of structural performance between fire-resistant steel and ordinary structural steel of equivalent mechanical properties at room temperature, the former had greater structural stability than the latter through $900^{\circ}C$.

키워드

참고문헌

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피인용 문헌

  1. Mechanical properties and modelling of superior high-performance steel at elevated temperatures vol.176, pp.None, 2014, https://doi.org/10.1016/j.jcsr.2020.106407
  2. Experimental and numerical investigation on post-earthquake fire behaviour of the circular concrete-filled steel tube columns vol.38, pp.1, 2014, https://doi.org/10.12989/scs.2021.38.1.017
  3. The fire-risks of cost-optimized steel structures: Fire-resistant and hot-rolled carbon steel vol.78, pp.1, 2021, https://doi.org/10.12989/sem.2021.78.1.067
  4. Microstructure evolution and fire-resistant properties of 690 MPa anti-seismic fire-resistant steel plate vol.8, pp.6, 2014, https://doi.org/10.1088/2053-1591/ac0a03