• Assih, J.
• Stankov, V.
• Ivanova, I.
• Dontchev, D.

Abstract

<jats:title>Abstract</jats:title><jats:p>In this study a numerical simulation is developed using finite element (FE) software Abaqus, to assess and simulate the structural behavior of reinforced concrete column - short corbel assembly strengthened by bonding composite materials The objective of the presented simulation is to reproduce the behavior of the considered structure as the displacements, strain, the mode of damages, the cracks propagation, the ultimate force, and the behavior of the main reinforcements, obtained from the experimental study. “Concrete Damage Plasticity” (CDP) has been used for modeling concrete. It combines the damage and the plasticity models and it reproduces failure modes that are based on tensile cracking and compression crushing. The perfectly plastic elastic behavior of steel was introduced in this study. Carbon Fibre Reinforced Fabrics (CFRF) was assumed as a linear elastic orthotropic material. The mechanical behavior of the composite material, in the elastic stage, was defined as “Lamina” and the properties were obtained by the “Rule of mixture”. The “Hashin Damage” failure criteria were also used for composite materials. The surface contact between the concrete and the composite material was developed through the cohesive zone model. The loading of the structure was done by displacement control for all developed models. This allows us to go further and study the influence of various parameters on the behavior such as the number of layers of bonding reinforcement, and the type of composite material. The optimal reinforcement is obtained by the wrapping of three layers of unidirectional carbon fiber fabrics.</jats:p>

Topics

• impedance spectroscopy
• surface
• polymer
• Carbon
• simulation
• crack
• steel
• composite
• plasticity