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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.77 No.5
- 발행연도
- 2021.1
- 수록면
- 661 - 672 (12page)
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초록· 키워드
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In this article, the role of spans number and length in fire-resistance ratings (FRRs) of fireproofed steel frames are investigated. First, over a span-lengthening scenario, two one- and three-bay frames under the ISO834 fire are examined. It is shown that the FRRs of the frames rely highly on the changes made on their span length. Second, a building designed for three spans number of three, four, and five under natural fire is investigated. The beams are designed for two load-capacity-ratios (LCRs) of optimum and ultimate. The fire curves are determined through a probabilistic-based approach. It is shown that the structural vulnerability vastly increases while the number of spans decreases. The results show that for an optimum LCR, while the five-span frame can meet the required FRR in 87% of the fire scenarios, the four- and three-span frames can meet the required FRR in only 56%, and 50% of the fire scenarios, respectively. For an ultimate LCR, the five-, four- and three-span frames can meet the required FRR in 81%, 50%, and 37.5% of the fire scenarios, respectively. Functional solutions are then proposed to resolve the insufficiencies in the results and to rectify the application of the standard-based FRRs in the cases studied. The study here highlights how employing current standard-based FRRs can endanger structural safety if they are not connected to structural characteristics; a crucial hint specifically for the structural engineering community who may be not well familiar with the fundamentals of performance-based approaches.
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참고문헌 (29)
참고문헌 신청
2001 / ASTME119-01, Standard Methods of Fire Test of Building Construction and Materials
Behnam, B. / 2017 / Failure sensitivity analysis of tall momentresisting structures under natural fires / Int. J. Civil Eng. 16(12):1771~1780
Behnam, B. / 2017 / Post-Earthquake Fire Analysis in Urban Structures: Risk Management Strategies / CRC Press
Behnam, B. / 2018 / Fire structural response of the plasco building : A preliminary investigation report / Int. J. Civil Eng 17(5):563~580
Bletzinger, K. U. / 2000 / A unified approach for shear-locking-free triangular and rectangular shell finite elements / Comput. Struct 75(3):321~334
Behnam, B. / 2017 / Failure sensitivity analysis of tall momentresisting structures under natural fires / Int. J. Civil Eng. 16(12):1771~1780
Behnam, B. / 2017 / Post-Earthquake Fire Analysis in Urban Structures: Risk Management Strategies / CRC Press
Behnam, B. / 2018 / Fire structural response of the plasco building : A preliminary investigation report / Int. J. Civil Eng 17(5):563~580
Bletzinger, K. U. / 2000 / A unified approach for shear-locking-free triangular and rectangular shell finite elements / Comput. Struct 75(3):321~334
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