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Assessment of the reduction of the safety level of concrete slabs during fire

Ruben Van Coile (UGent) , Robby Caspeele (UGent) , Emmanuel Annerel (UGent) and Luc Taerwe (UGent)
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Abstract
Although several studies are available with respect to the safety level op concrete structures, the behaviour of the safety level during fire is most often not considered. Nevertheless, a full-probabilistic methodology for calculating the safety level during fire is very useful for a quantitative comparison of design alternatives and for considering more detailed (or updated) information regarding material properties as well as geometrical properties into the design or verification process. In this paper, a computational tool is developed for calculating the time and temperature dependent reliability index of concrete slabs, taking into account time-dependent temperature profiles and temperature-dependent material properties. Monte Carlo simulations are used in order to quantify the stochastic nature of the diffent variables, resulting in a full-probabilistic calculation tool with sufficient flexibility to be applied for a wide range of practical applications. Firstly, the evolution of the bending moment capacity of a number of reference slabs is investigated and compared, taking into account the uncertainty on variables according to literature data and experimental test results. Secondly, the results of these full-probabilistic simulations are compared with the semi-probabilistic calculation methods as specified in EN 1992-1-2. The effectiveness of the general calculation method and the accuracy of the simplified calculation method described in this European standard are evaluated. Finally, some critical points of interest with respect to the calculation methodology are pointed out.

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Chicago
Van Coile, Ruben, Robby Caspeele, Emmanuel Annerel, and Luc Taerwe. 2010. “Assessment of the Reduction of the Safety Level of Concrete Slabs During Fire.” In Proceedings of the 8th International Probabilistic Workshop, ed. P van Gelder, L Gucma, and D Proske, 61–72. Szczecin, Poland: Akademia Morska.
APA
Van Coile, R., Caspeele, R., Annerel, E., & Taerwe, L. (2010). Assessment of the reduction of the safety level of concrete slabs during fire. In P van Gelder, L. Gucma, & D. Proske (Eds.), Proceedings of the 8th international probabilistic workshop (pp. 61–72). Presented at the 8th International Probabilistic Workshop, Szczecin, Poland: Akademia Morska.
Vancouver
1.
Van Coile R, Caspeele R, Annerel E, Taerwe L. Assessment of the reduction of the safety level of concrete slabs during fire. In: van Gelder P, Gucma L, Proske D, editors. Proceedings of the 8th international probabilistic workshop. Szczecin, Poland: Akademia Morska; 2010. p. 61–72.
MLA
Van Coile, Ruben, Robby Caspeele, Emmanuel Annerel, et al. “Assessment of the Reduction of the Safety Level of Concrete Slabs During Fire.” Proceedings of the 8th International Probabilistic Workshop. Ed. P van Gelder, L Gucma, & D Proske. Szczecin, Poland: Akademia Morska, 2010. 61–72. Print.
@inproceedings{1842897,
  abstract     = {Although several studies are available with respect to the safety level op concrete structures, the behaviour of the safety level during fire is most often not considered. Nevertheless, a full-probabilistic methodology for calculating the safety level during fire is very useful for a quantitative comparison of design alternatives and for considering more detailed (or updated) information regarding material properties as well as geometrical properties into the design or verification process. In this paper, a computational tool is developed for calculating the time and temperature dependent reliability index of concrete slabs, taking into account time-dependent temperature profiles and temperature-dependent material properties. Monte Carlo simulations are used in order to quantify the stochastic nature of the diffent variables, resulting in a full-probabilistic calculation tool with sufficient flexibility to be applied for a wide range of practical applications. Firstly, the evolution of the bending moment capacity of a number of reference slabs is investigated and compared, taking into account the uncertainty on variables according to literature data and experimental test results. Secondly, the results of these full-probabilistic simulations are compared with the semi-probabilistic calculation methods as specified in EN 1992-1-2. The effectiveness of the general calculation method and the accuracy of the simplified calculation method described in this European standard are evaluated. Finally, some critical points of interest with respect to the calculation methodology are pointed out.},
  author       = {Van Coile, Ruben and Caspeele, Robby and Annerel, Emmanuel and Taerwe, Luc},
  booktitle    = {Proceedings of the 8th international probabilistic workshop},
  editor       = {van Gelder, P and Gucma, L and Proske, D},
  isbn         = {9788389901491},
  language     = {eng},
  location     = {Szczecin, Poland},
  pages        = {61--72},
  publisher    = {Akademia Morska},
  title        = {Assessment of the reduction of the safety level of concrete slabs during fire},
  url          = {http://books.google.be/books?id=omaq7MtSvw0C\&pg=PA277\&lpg=PA277\&dq=9788389901491\&source=bl\&ots=x\_WiXU-DmA\&sig=nOiih3kTSDvwLHzXceftvlNmpb4\&hl=nl\&ei=F\_4vTvb\_DcKc-wbPo4WKBA\&sa=X\&oi=book\_result\&ct=result\&resnum=1\&ved=0CBcQ6AEwAA\#v=onepage\&q\&f=false},
  year         = {2010},
}