An engineering mechanics based approach to predict safety of rc columns under high temperatures

Up till now, the design code for the determination of fire resistance of reinforced concrete (RC) columns is essentially based on tabulated data. Clearly, a more scientific approach based on an understanding of the fundamental behavior of columns in fire is timely and will be useful to structural engineers. This paper develops a straightforward and rational method to predict the fire resistance of RC columns, which is based on the traditional Rankine approach. The effect of shear bond, if included in the Rankine approach, will yield more accurate predictions. Material deterioration at elevated temperature with regard to the strength and stability of columns is also quantified.