• Jayanthi M B

An accidental fire is an extreme event that may alter the performance and behavior of structural elements. The Reinforced Concrete (RC) elements have considerably better fire resistance than structural steel elements. Owing to this, reinforced concrete elements are widely used in the construction industry. It is evident from previous literature that the actual fire resistance capacity of the reinforced concrete beams varies with the change in fire scenarios. However, the present Indian standard provides prescriptive tables to improve the fire resistance of RC structural elements. Therefore, a detailed study needs to be carried out to determine the fire resistance of reinforced concrete beams specified in the Indian Standard code by adopting the fire dynamics. In the present work, finite element analysis of RC beams is conducted using Finite Element Software ABAQUS. The RC beams were subjected to parametric time-temperature curves and standard time-temperature curves to determine the equivalent fire severity of the Eurocode design fires (Parametric Time-Temperature Curve). The considered concrete and steel properties for the simulation are validated by the previous literature works. Further, the limiting fire load of the RC beams subjected to parametric design fires is determined. Further, the concept of Duration of Heating Phase is applied to compare with the standard time-temperature fire and the deflections of the fire-exposed RC elements are considered for detailed discussion and conclusion.

Beam, Fire Resistance, Temperature Curve , Structural Analysis ,Concrete, Steel

"ANALYTICAL STUDIES ON THE FIRE RESISTANCE OF THE RC BEAMS EXPOSED TO PARAMETRIC TIME-TEMPERATURE CURVE ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 8, page no.293-308, August-2018, Available :http://www.jetir.org/papers/JETIR1808B40.pdf

"ANALYTICAL STUDIES ON THE FIRE RESISTANCE OF THE RC BEAMS EXPOSED TO PARAMETRIC TIME-TEMPERATURE CURVE ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 8, page no. pp293-308, August-2018, Available at : http://www.jetir.org/papers/JETIR1808B40.pdf