Abstract:

In the damage evaluation of concrete structures, the models based on the cohesive interaction between crack surfaces enable reliable and realistic simulations. The cohesive models take into account the equilibrium between crack opening and cohesive closing stresses at crack interfaces with the tension softening property of concrete. This study stemmed from this cohesive approach and developed the finite element model with discrete crack approach in which the cohesive interaction was defined along crack surfaces according to the tension softening behaviour of concrete. ABAQUS program was used for numerical analysis. In order to demonstrate the efficiency of proposed cohesive based approach, the other simulation was conducted by using Extended Finite Element Method and results of these two approaches were compared according to the structural parameters. The good agreement between the results of two approaches proved the accuracy of the proposed cohesive crack approach.

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