Damage Spread Model of Reinforced Concrete Beam Column

Abstract:

Based on the damage spread process of reinforced concrete beam column member, the damage spread model adjusts the length of damage zone in every loading step. The modified Gauss Radau integration scheme is employed to assure one integration point in the field of the damage, the plastic zone length issue of the segmented fiber beam column raised by Scott & Fenves is avoided. In the end, the comparison between the theoretical and experimental results of a reinforced concrete column verifies that with the model, rational results can be obtained, and the damage spread of reinforced concrete beam column member can be simulated.

Key words:reinforced concrete beam column member; force based model; damage spread