Nonlinear Structural Analysis of Fire-Exposed Reinforced Concrete Column

Abstract:

A nonlinear structural analysis is presented for reinforced concrete (RC) columns exposed to fire. The analysis includes two steps: the first step is the calculation of the temperature distribution in concrete members, and the second the determination of the mechanical response due to elevated temperature and applied loading. In the thermal analysis, the effect of moisture is taken into account. The use of the computer program for evaluating the response of a RC column from the initial preloading stage to collapse, due to fire, is illustrated. The validity of the numerical model used in the program is verified by comparing the predictions from the computer program with measured results from full-scale fire resistance tests. The computer program can be used to predict the fire resistance of RC columns for any values of the significant parameters, such as load level, section dimensions, column length, concrete strength, concrete cover, aggregate type and reinforcement ratio.

• Periodical: Advanced Materials Research (Volume 1095)
• Pages: 267-275
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1095.267
• Online since: March 2015
• Authors: Li Xian Liu*, Long Lv, Yan Feng Zhao
• Keywords: Fire Resistance, Load Level, Moisture Content, Non-Linear Analysis, Size Effect

References

[1] Sidibė, K., Duprat, F., and Booureet, B., Fire Safety of Reinforced Concrete Columns, Journal of Structural Engineering, ASCE, 128(3), (2000), pp.365-373.

[2] J. C. Dotreppe, J. M. Fransen, A., Bruls, R. Baus, P., Vandervelde, R., Minnes, van D. Meurvenburg, and H. Lambette, Experimental Research on the Determination of Main Parameters Affecting the Behaviour of Reinforced Concrete Columns under Fire Conditions, Jour. Magazine of Concrete Research, 49 (179) (1997).

DOI: 10.1680/macr.1997.49.179.117

[3] C. -M. Aldea, J. -M. Franssen, and J. -C. Dotreppe, Fire Tests on Normal and High Strength Reinforced Concrete Columns, Fire Performance of High Strength Concrete, Proceedings of an International Workshop, NIST-National Institute of Standards and Technology, Gaithersburg, MD (1997).

DOI: 10.6028/nist.sp.919

[4] V.R. Kodur, and R. McGrath, Fire Endurance of High Strength Concrete Columns, Fire Technology, 39(1) (2003), pp.73-87.

[5] Sullivan, P. J. E., Terro, M. J., and Morris, W. A., Critical Review of Fire-dedicated Thermal and Structural Computer Programs, Journal of Applied Fire Science, 3(2) (1993) , pp.113-135.

DOI: 10.2190/41hq-kpc9-4jt5-vu5v

[6] Lie T.T. and Irwin R.J., Method to Calculate the Fire Resistance of Reinforced Concrete Columns with Rectangular Cross Section, ACI Structural Journal, 90(1) (1993), p.52–60.

DOI: 10.14359/4210

[7] Kodur V.R., Lie T.T., A Computer Program to Calculate the Fire Resistance of Rectangular Reinforced Concrete Columns, Third Canadian Conference on Computing in Civil and Building Engineering, Ottawa, Canada (1996), p.11–20.

[8] Terro M.J., Numerical Modeling of the Behavior of Concrete Structures in Fire, ACI Structural Journal, 95(3/4) (1998), p.183–193.

[9] Daniel Di Capua, and Antonio R. Mari, Nonlinear Analysis of Reinforced Concrete Cross-sections eExposed to Fire, Fire Safety Journal, 42(2007), p.139–149.

DOI: 10.1016/j.firesaf.2006.08.009

[10] Bazant Z.P. and Kaplan M.F., Concrete at High Temperature: Material Properties and Mathematical Models, Longman Group Limited (1996), London.

[11] Luccioni B.M., Figueroa M.I., and Danesi R.F., Thermo-mechanic Model for Concrete Exposed to Elevated Temperatures, Eng Structure, 25(2003), p.729–742.

DOI: 10.1016/s0141-0296(02)00209-2

[12] Terro MJ, Numerical Modeling of the Behavior of Concrete Structures in Fire, ACI Struct. J, 95(2) (1998), p.183–93.

[13] Lie T.T. (1992) , Structural fire protection, New York: American Society of Civil Engineers.

[14] A. Cengel Yunus, Heat transfer-A Practical Approach, McGraw-Hill, (2003).

[15] Z. Huang and A. Platten, Non-linear finite Element aAnalysis of Planar Reinforced Concrete Members Subjected to Fires, ACI Structural Journal, 94(3) (1997), p.272–282.

DOI: 10.14359/479