Full-Probabilistic Analysis of Concrete Beams During Fire

Asimplified full-probabilistic calculation tool is developed which is capable of calculating the bending moment capacity of simply supported beams exposed to fire. It is found that the uncertainty with respect to the reduction factors for the material properties at elevated temperatures and the uncertainty with respect to the concrete cover have a negative effect on the safety level corresponding to the design value of the bending moment capacity calculated according to the Eurocode. Furthermore, the model allows an objective comparison of different design alternatives with respect to the safety level.

[1]  H. Gulvanessian,et al.  Designers' guide to Eurocode : basis of structural design EN 1990 , 2012 .

[2]  Christopher D. Eamon,et al.  Reliability analysis of prestressed concrete beams exposed to fire , 2012 .

[3]  Robby Caspeele,et al.  Global resistance factor for concrete slabs exposed to fire , 2012 .

[4]  Bernard Bourret,et al.  FIRE SAFETY OF REINFORCED CONCRETE COLUMNS , 2000 .

[5]  Zhenqing Wang,et al.  The Reliability Analysis of Reinforced Concrete Beams under High Temperature , 2010, 2010 Third International Joint Conference on Computational Science and Optimization.

[6]  Venkatesh Kodur,et al.  Design equation for predicting fire resistance of reinforced concrete beams , 2011 .

[7]  Asif Usmani,et al.  Applying the peer performance based earthquake engineering methodology to structures in fire , 2012 .

[8]  Venkatesh Kodur,et al.  Energy based time equivalent approach for evaluating fire resistance of reinforced concrete beams , 2010 .

[9]  Ali Nadjai,et al.  Finite Element Modeling of Carbon Fiber-Reinforced Polymer Reinforced Concrete Beams under Elevated Temperatures , 2008 .

[10]  A W Beeby,et al.  CONCISE EUROCODE FOR THE DESIGN OF CONCRETE BUILDINGS. BASED ON BSI PUBLICATION DD ENV 1992-1-1: 1992. EUROCODE 2: DESIGN OF CONCRETE STRUCTURES. PART 1: GENERAL RULES AND RULES FOR BUILDINGS , 1993 .

[11]  Martin Sandberg,et al.  Statistical Determination of Ignition Frequency , 2004 .

[12]  J. Rahikainen,et al.  Statistical Determination of Ignition Frequency of Structural Fires in Different Premises in Finland , 2004 .

[13]  Monther B. Dwaikat,et al.  A numerical model for predicting the fire resistance of reinforced concrete beams , 2008 .

[14]  Robby Caspeele,et al.  Assessment of the Safety Level of Concrete Slabs during Fire , 2011 .

[15]  Luc Taerwe,et al.  Evolution of the strains of traditional and self-compacting concrete during and after fire , 2011 .