The Influence of Slenderness in Steel and Composite Columns under Fire Conditions
Received: 14 December 2022 | Revised: 2 January 2023 | Accepted: 5 January 2023 | Online: 5 February 2023
Corresponding author: Farid Boursas
Abstract
This study simulated two columns using the finite element software SAFIR. The first was a steel profile column and the second was a steel profile partially encased in a concrete column (SPPEC). Both columns were heated on four sides for one hour using the ISO834 standard fire curve. Two boundary conditions were considered for both columns, simply and doubly supported and loaded utilizing eccentric loading. A parametric analysis aimed to identify a thermal analysis of unprotected and protected steel columns in terms of temperature field distribution, and time-temperature curves of a few selected nodes were drawn from the SAFIR software. A thermomechanical study was also carried out using the results of the thermal analysis to determine the influence of slenderness on the resistance of the steel and the partially encased profile in concrete columns under fire solicitation. Finally, a comparison of the fire resistance of the two columns was made. The results proved that the slenderness negatively influences the fire resistance of the steel and composite columns and that the behavior of the composite columns is significantly better than the steel ones.
Keywords:
steel profile column, SPPEC column, fire curve ISO834, slenderness, thermomechanical studyDownloads
References
P. C. Nguyen, D. D. Pham, T. T. Tran, and T. Nghia-Nguyen, "Modified Numerical Modeling of Axially Loaded Concrete-Filled Steel Circular-Tube Columns," Engineering, Technology & Applied Science Research, vol. 11, no. 3, pp. 7094–7099, Jun. 2021. DOI: https://doi.org/10.48084/etasr.4157
C. Renaud, "Calcul simplifie de la temperature critique selon la norme EN 1993-1-2," Construction métallique, no. 3, pp. 89–118, 2012.
"Eurocode 3: Design of steel structures - Part 1-2: General rules - structural fire design," European Committee for Standardization, Brusseles, Belgium, European Standard EN 1993-1-2, 2005.
B. Wu and J. Z. Lu, "A numerical study of the behaviour of restrained RC beams at elevated temperatures," Fire Safety Journal, vol. 44, no. 4, pp. 522–531, May 2009. DOI: https://doi.org/10.1016/j.firesaf.2008.10.006
J. M. Franssen and J. C. Dotreppe, "Fire Tests and Calculation Methods for Circular Concrete Columns," Fire Technology, vol. 39, no. 1, pp. 89–97, Jan. 2003. DOI: https://doi.org/10.1023/A:1021783311892
S. Seręga, "Effect of transverse reinforcement spacing on fire resistance of high strength concrete columns," Fire Safety Journal, vol. 71, pp. 150–161, Jan. 2015. DOI: https://doi.org/10.1016/j.firesaf.2014.11.017
C. Ibañez, M. L. Romero, and A. Hospitaler, "Effects of axial and rotational restraints on concrete-filled tubular columns under fire," Journal of Constructional Steel Research, vol. 125, pp. 114–127, Oct. 2016. DOI: https://doi.org/10.1016/j.jcsr.2016.06.010
"Eurocode 4: Design of composite steel and concrete structures – Part 1-2: General rules - Structural fire design," European Committee for Standardization, Brusseles, Belgium, European Standard EN 1994-1-2, 2005.
Y. Yao, H. Li, H. Guo, and K. Tan, "Fire resistance of eccentrically loaded slender concrete-filled steel tubular columns," Thin-Walled Structures, vol. 106, pp. 102–112, Sep. 2016. DOI: https://doi.org/10.1016/j.tws.2016.04.025
Y. Yao, H. Li, and K. Tan, "Theoretical and numerical analysis to concrete filled double skin steel tubular columns under fire conditions," Thin-Walled Structures, vol. 98, pp. 547–557, Jan. 2016. DOI: https://doi.org/10.1016/j.tws.2015.10.024
M. Yu, T. Wang, W. Huang, and J. Ye, "Fire resistance of concrete-filled steel tube columns with preload. Part II: Numerical and analytical investigation," Composite Structures, vol. 223, Sep. 2019, Art. no. 110995. DOI: https://doi.org/10.1016/j.compstruct.2019.110995
G. M. Kamil, Q. Q. Liang, and M. N. S. Hadi, "Fire-Resistance of Eccentrically Loaded Rectangular Concrete-Filled Steel Tubular Slender Columns Incorporating Interaction of Local and Global Buckling," International Journal of Structural Stability and Dynamics, vol. 19, no. 08, Aug. 2019, Art. no. 1950085. DOI: https://doi.org/10.1142/S0219455419500858
W.-J. Mao, W.-D. Wang, and W. Xian, "Numerical analysis on fire performance of steel-reinforced concrete-filled steel tubular columns with square cross-section," Structures, vol. 28, pp. 1–16, Dec. 2020. DOI: https://doi.org/10.1016/j.istruc.2020.08.043
S. Li, J. Y. R. Liew, M.-X. Xiong, and B.-L. Lai, "Experimental investigation on fire resistance of high-strength concrete encased steel composite columns," Fire Safety Journal, vol. 121, May 2021, Art. no. 103273. DOI: https://doi.org/10.1016/j.firesaf.2020.103273
A. N. Hassooni and S. R. A. Zaidee, "Behavior and Strength of Composite Columns under the Impact of Uniaxial Compression Loading," Engineering, Technology & Applied Science Research, vol. 12, no. 4, pp. 8843–8849, Aug. 2022. DOI: https://doi.org/10.48084/etasr.4753
M. Baghdadi, M. S. Dimia, and D. Baghdadi, "A Parametric Study of Fire-Damaged Reinforced Concrete Columns under Lateral Loads," Engineering, Technology & Applied Science Research, vol. 12, no. 5, pp. 9113–9119, Oct. 2022. DOI: https://doi.org/10.48084/etasr.5172
J. M. Franssen, "User’s manual for SAFIR 2007a - A computer program for analysis of structures subjected to fire," University of Liege, Liege, Belgium, User Manual, Feb. 2008.
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Copyright (c) 2023 Farid Boursas, Rafik Boufarh, Bilal Maghaghi
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