DOI QR코드

DOI QR Code

The behaviour of structures under fire - numerical model with experimental verification

  • Toric, Neno (University of Split, Faculty of Civil Engineering, Architecture and Geodesy) ;
  • Harapin, Alen (University of Split, Faculty of Civil Engineering, Architecture and Geodesy) ;
  • Boko, Ivica (University of Split, Faculty of Civil Engineering, Architecture and Geodesy)
  • 투고 : 2011.10.07
  • 심사 : 2013.07.12
  • 발행 : 2013.09.25

초록

This paper presents a comparison of results obtained by a newly developed numerical model for predicting the behaviour of structures under fire with experimental study carried out on heated and simply supported steel beam elements. A newly developed numerical model consists of three submodels: 3D beam model designed for calculating the inner forces in the structure, 2D model designed for calculation of stress and strain distribution over the cross section, including the section stiffness, and 3D transient nonlinear heat transfer model that is capable of calculating the temperature distribution along the structure, and the distribution over the cross section as well. Predictions of the calculated temperatures and vertical deflections obtained by the numerical model are compared with the results of the inhouse experiment in which steel beam element under load was heated for 90 minutes.

키워드

참고문헌

  1. Anderberg, Y. (1983), Properties of Materials at High Temperatures - Steel, RILEM Report, University of Lund, Sweden
  2. Bangash, M.J.H. (1989), Concrete, Concrete Structures, Numerical Modelling, Applications, Elsevier Applied Science, New York, NY, USA.
  3. Boko, I., Peros, B. and Toric, N. (2007), "Fire Resistance Determination of Steel Structures", Proceedings of 3rd International Conference on Structural Engineering, Mechanics and Computation, Cape Town, South Africa, September.
  4. Dwaikat, M.B. and Kodur, V.K.R. (2008), "A numerical approach for modelling the fire induced restraint effects in reinforced concrete beams", Fire Safety J., 43(4), 298-307.
  5. ECCS Technical Committee 3 (1983), European Recommendations for the Fire Safety of Steel Structures, Calculation of the Fire Resistance of Load Bearing Elements and Structural Assemblies Exposed to the Standard Fire, Amsterdam, Elsevier Scientific Publishing Company.
  6. El-Fitiany, S.F. and Youssef, M.A. (2009), "Assessing the flexural and axial behaviour of reinforced concrete members at elevated temperatures using sectional analysis", Fire Safety J., 44(5), 691-703. https://doi.org/10.1016/j.firesaf.2009.01.005
  7. Elghazouli, A.Y. and Izzuddin, B.A. (2000), "Response of idealized composite beam-slab systems under fire conditions", J. Construct. Steel Res., 56(3), 199-224. https://doi.org/10.1016/S0143-974X(00)00006-7
  8. EN 1993-1-2:2005 (2005), Eurocode 3 - Design of steel structures - Part 1-2: General Rules - Structural fire design, European Committee for Standardization, Brussels.
  9. Kodur, V.K.R. and Dwaikat, M.M.S. (2009), "Response of steel beam-columns exposed to fire", Eng. Struct., 31(2), 369-379. https://doi.org/10.1016/j.engstruct.2008.08.020
  10. Liew, J.Y.R., Chen, W.F. and Chen, H. (2000), "Advanced inelastic analysis of frame structures", J. Construct. Steel Res., 55(1-3), 245-265. https://doi.org/10.1016/S0143-974X(99)00088-7
  11. Prezeminiecki, J.S. (1968), Theory of Matrix Structural Analysis, McGraw-Hill, New York, NY, USA.
  12. Radnic, J. and Harapin, A. (1993), "Model dimenzioniranja kompozitnih poprecnih presjeka", Gradevinar, 45(7), 379-389.
  13. Sapountzakis, E.J. and Mokos, V.G. (2007), "3-D beam element of composite cross section including warping and shear deformation effects", Comput. Struct., 85(1-2), 102-116. https://doi.org/10.1016/j.compstruc.2006.09.003
  14. Sterner, E. and Wickstrom U. (1990), TASEF-Temperature Analysis of Structures Exposed to Fire, Swedish National Testing Institute.
  15. Terro, M.J. (1998), "Numerical modeling of the behaviour of concrete structures in fire", ACI Struct. J., 95(2), 183-193.
  16. Trogrlic, B. and Mihanovic, A. (2008), "The comparative body model in material and geometric nonlinear analysis of space R/C frames", Eng. Comput., 25(2), 155-171. https://doi.org/10.1108/02644400810855968
  17. Trogrlic, B., Harapin, A. and Mihanovic, A. (2011), "The null configuration model in limit load analysis of steel space frames", Materialwissenschaft und Werkstofftechnik, 42(5), 417-428. https://doi.org/10.1002/mawe.201100801
  18. Wang, Y.C., Lennon, T. and Moore, D.B. (1995), "The behaviour of steel frames subject to fire", J. Construct. Steel Res., 35(3), 291-322. https://doi.org/10.1016/0143-974X(94)00046-K
  19. Wu, B. and Lu, J.Z. (2009), "A numerical study of the behaviour of restrained RC beams at elevated temperatures", Fire Safety J., 44(4), 522-531. https://doi.org/10.1016/j.firesaf.2008.10.006
  20. Yang, Y.B., Kuo, S.R. and Wu Y.S. (2002), "Incrementally small-deformation theory for nonlinear analysis of structural frames", Eng. Struct., 24(6), 783-798. https://doi.org/10.1016/S0141-0296(02)00007-X
  21. Youssef, M.A. and Moftah, M. (2007), "General stress-strain relationship for concrete at elevated temperatures", Eng. Struct., 29(10), 2618-2634. https://doi.org/10.1016/j.engstruct.2007.01.002