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A platform for research: civil engineering, architecture and urbanism
Fire behavior and resistance of partially encased and slim-floor composite beams
https://orcid.org/0000-0002-1502-2531
AbstractIn this study, fire behavior and resistance of unprotected H-section, partially encased (PE), and slim-floor (SF) composite beams were experimentally and numerically investigated under standard fire condition. Experimental results of this study showed that unreinforced or reinforced PE beams and reinforced SF beams can achieve the standard fire resistance of 2hours or more up to the load ratio of about 0.30. The use of fire reinforcements in SF composite beams was shown to be very effective in increasing the fire resistance time. It was again confirmed that the maximum and average temperature criteria can significantly underestimate or overestimate the realistic fire resistance of PE and SF composite beams. The test-validated coupled thermal-stress analysis indicated that the fire resistance predicted by the bending moment capacity criterion alone can be unconservative for the types of composite beams of this study. It is emphasized that the deflection-related criteria should be considered for the rational fire resistance rating of PE and SF composite beams.
HighlightsFire behavior of PE (partially encased) and SF (slim-floor) beams was investigated experimentally and numerically.Fire reinforcements in SF beams were found to be very effective for increasing fire resistance.Test-validated coupled thermal-stress finite element analysis modeling was developed.Deflection-related criteria should be used for the rational fire resistance rating of PE and SF beams.
Fire behavior and resistance of partially encased and slim-floor composite beams
https://orcid.org/0000-0002-1502-2531
AbstractIn this study, fire behavior and resistance of unprotected H-section, partially encased (PE), and slim-floor (SF) composite beams were experimentally and numerically investigated under standard fire condition. Experimental results of this study showed that unreinforced or reinforced PE beams and reinforced SF beams can achieve the standard fire resistance of 2hours or more up to the load ratio of about 0.30. The use of fire reinforcements in SF composite beams was shown to be very effective in increasing the fire resistance time. It was again confirmed that the maximum and average temperature criteria can significantly underestimate or overestimate the realistic fire resistance of PE and SF composite beams. The test-validated coupled thermal-stress analysis indicated that the fire resistance predicted by the bending moment capacity criterion alone can be unconservative for the types of composite beams of this study. It is emphasized that the deflection-related criteria should be considered for the rational fire resistance rating of PE and SF composite beams.
HighlightsFire behavior of PE (partially encased) and SF (slim-floor) beams was investigated experimentally and numerically.Fire reinforcements in SF beams were found to be very effective for increasing fire resistance.Test-validated coupled thermal-stress finite element analysis modeling was developed.Deflection-related criteria should be used for the rational fire resistance rating of PE and SF beams.
Fire behavior and resistance of partially encased and slim-floor composite beams
https://orcid.org/0000-0002-1502-2531
AbstractIn this study, fire behavior and resistance of unprotected H-section, partially encased (PE), and slim-floor (SF) composite beams were experimentally and numerically investigated under standard fire condition. Experimental results of this study showed that unreinforced or reinforced PE beams and reinforced SF beams can achieve the standard fire resistance of 2hours or more up to the load ratio of about 0.30. The use of fire reinforcements in SF composite beams was shown to be very effective in increasing the fire resistance time. It was again confirmed that the maximum and average temperature criteria can significantly underestimate or overestimate the realistic fire resistance of PE and SF composite beams. The test-validated coupled thermal-stress analysis indicated that the fire resistance predicted by the bending moment capacity criterion alone can be unconservative for the types of composite beams of this study. It is emphasized that the deflection-related criteria should be considered for the rational fire resistance rating of PE and SF composite beams.
HighlightsFire behavior of PE (partially encased) and SF (slim-floor) beams was investigated experimentally and numerically.Fire reinforcements in SF beams were found to be very effective for increasing fire resistance.Test-validated coupled thermal-stress finite element analysis modeling was developed.Deflection-related criteria should be used for the rational fire resistance rating of PE and SF beams.
Fire behavior and resistance of partially encased and slim-floor composite beams
Ahn, Jae-Kwon (author) / Lee, Cheol-Ho (author)
Journal of Constructional Steel Research ; 129 ; 276-285
2016-11-16
10 pages
Article (Journal)
Electronic Resource
English
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