The Bearing Capacity Calculation Method of Cracked Reinforced Concrete Column at High Temperature

This paper presents results from a set of numerical studies on the cracked reinforced concrete column at high temperature.

The macroscopic finite element model used in the accounts analysis for high temperature properties of constitutive materials. The validity of the model is established by comparing the predictions from numerical analysis with the data measured in the fire test.

Data from the test indicated that the temperature of rebar in column with cracks is 57% ~ 130% higher than that without cracks under the same condition, and different types of crack had significant influence on the bearing capacity of column. These results from parametric studies were utilized to propose ultimate bearing capacity of cracked reinforced concrete column.