TY - GEN
T1 - Fire performance of reinforced concrete beams under design fire exposure
AU - Kodur, Venkatesh
AU - Dwaikat, Monther
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
KW - Fire resistance
KW - High temperature
KW - Reinforced concrete beams
KW - Standard and Design fire
UR - http://www.scopus.com/inward/record.url?scp=70349384181&partnerID=8YFLogxK
U2 - 10.1061/41016(314)58
DO - 10.1061/41016(314)58
M3 - Conference contribution
AN - SCOPUS:70349384181
SN - 9780784410165
T3 - Proceedings of the 2008 Structures Congress - Structures Congress 2008: Crossing the Borders
BT - Proceedings of the 2008 Structures Congress - Structures Congress 2008
PB - American Society of Civil Engineers (ASCE)
T2 - 2008 Structures Congress - Structures Congress 2008: Crossing the Borders
Y2 - 24 April 2008 through 26 April 2008
ER -