Calculation of fire resistance of reinforced concrete column by the zone method

摘要

This paper describes the calculation of the fire resistance of reinforced concrete columnthat is exposed to fire from two sides. Calculation of the temperatures has been madedepending on whether the heat flow within the reinforced concrete column is one-dimensionalor two-dimensional. The temperature of concrete and the temperature ofreinforcement are calculated by the Hertz's method. The values of concrete strength andreinforcement, as well as the width of the damage zone of concrete during a certain periodof exposure to fire have been calculated. Resistance to the effects of fire on reinforcedconcrete column has been calculated by the zone method. The time of the resistance ofcolumn to the effects of fire has been determined according to the moment capacity ofreinforced concrete column.