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A platform for research: civil engineering, architecture and urbanism
Fire Performance of Reinforced Concrete Beams under Design Fire Exposure
The effect of fire induced restraint and fire scenario on the fire response of reinforced concrete beams is addressed in this paper. A macroscopic finite element model, capable of tracing the behavior of restrained reinforced concrete beams from prefire stage to collapse in fire is used in the analysis. The model is applied to investigate the effect of three parameters; namely, fire scenario, axial restraint effect, and failures criteria on the fire response of reinforced concrete beams. The predicted fire resistance of reinforced concrete beams is compared to those computed as specified in ACI 216.1 and Eurocode 2. Results from the analysis indicate that the fire scenario has significant influence on fire resistance of reinforced concrete beams. The fire resistance of reinforced concrete beams generally increases with the degree of axial restraint. Also, the limiting criteria used to define failure can have significant influence on the resulting fire resistance. These factors, which are not taken into account in conventional prescriptive based approaches, should be given due consideration for realistic assessment of fire resistance of reinforced concrete beams under performance based codes.
Fire Performance of Reinforced Concrete Beams under Design Fire Exposure
The effect of fire induced restraint and fire scenario on the fire response of reinforced concrete beams is addressed in this paper. A macroscopic finite element model, capable of tracing the behavior of restrained reinforced concrete beams from prefire stage to collapse in fire is used in the analysis. The model is applied to investigate the effect of three parameters; namely, fire scenario, axial restraint effect, and failures criteria on the fire response of reinforced concrete beams. The predicted fire resistance of reinforced concrete beams is compared to those computed as specified in ACI 216.1 and Eurocode 2. Results from the analysis indicate that the fire scenario has significant influence on fire resistance of reinforced concrete beams. The fire resistance of reinforced concrete beams generally increases with the degree of axial restraint. Also, the limiting criteria used to define failure can have significant influence on the resulting fire resistance. These factors, which are not taken into account in conventional prescriptive based approaches, should be given due consideration for realistic assessment of fire resistance of reinforced concrete beams under performance based codes.
Fire Performance of Reinforced Concrete Beams under Design Fire Exposure
Kodur, Venkatesh (author) / Dwaikat, Monther (author)
Structures Congress 2008 ; 2008 ; Vancouver, British Columbia, Canada
Structures Congress 2008 ; 1-10
2008-10-14
Conference paper
Electronic Resource
English
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