Examples of modeling of flexural behavior of fiber-reinforced concrete sections using the planar crack assumption

Abstract

The present article describes a model, based on concepts of Fracture Mechanics, to evaluate the flexural behavior of fiber reinforced concrete (FRC) sections. It is developed by an analytical method that represents tension in concrete by means of the linear softening law included in the Model Code 2010. The method also uses a compatibility equation for the cracked zone based on the planar crack hypothesis, i.e. the assumption that the crack surfaces remain plane throughout the fracture process, in conjunction with the Navier’s hypothesis applied only to the non-cracked zone. In this work two applications of the model are presented.