Numerical Modeling in Reinforced Concrete Tie Rods
Palavras-chave:
Reinforced concrete, Tension stiffening, Finite elements, Reinforced concrete rods, Numerical modelingResumo
Concrete is a fragile material when subjected to tensile stresses, however, it is possible that a
substantial contribution can be perceived in the design of reinforced concrete elements under tension, even in the
post-cracking stage. In plain concrete, when the tensile strength is reached, cracks appear that progress until the
material ruptures, this is a localized behavior known as “strain softening”. Different from plain concrete,
reinforced concrete does not show softening due to the transfer mechanisms of tensile forces existing at the
steel-concrete interface, so tensile stiffness is a phenomenon that occurs exclusively in reinforced concrete
structures. The steel-concrete adhesion is directly related to energy absorption, which allows the redistribution of
stresses between the materials after cracking, contributing to an increase in the strength and stiffness of the
reinforced concrete element in an effect known as tension stiffening.
