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Title |
Experimental and Analytical Study on the Fire Resistance Performance of Permanent Steel Formed Beams
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Authors |
허인욱(In-Wook Heo) ; 다르한바트 할리오나(Khaliunaa Darkhanbat) ; 최승호(Seung-Ho Choi) ; 김성배(Sung-Bae Kim) ; 김강수(Kang-Su Kim) |
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DOI |
https://doi.org/10.11112/jksmi.2025.29.3.66 |
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Keywords |
강재 영구거푸집; 내화성능; 비선형유한요소해석; 하중비 Permanent steel form; Fire resistance; Nonlinear finite element analysis; Load ratio |
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Abstract |
This study presents an experimental and numerical investigation on the fire resistance performance of permanent steel formed beams. Two full-scale specimens were fabricated, and fire resistance tests were conducted. The vertical deflection and internal temperature distribution of the beams were analyzed as a function of fire exposure time. Based on the experimental results, a nonlinear finite element model was developed to evaluate the structural behavior under elevated temperatures. Using the verified model, a parametric analysis was performed to assess the effect of load ratio on fire resistance performance. The results showed that the beam with a width of 400 mm achieved the target 3-hour fire resistance performance when the load ratio was 0.5 or less, while the 800 mm wide beam satisfied the criteria for load ratios up to 0.8.
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