Title: Models for Inelastic Analysis of FRP Reinforced Concrete Members

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Publication: CIA

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Date: 2/28/2011

Abstract:
Inelastic behaviour of FRP reinforced concrete beams and columns is usually modelled using one of two different methods. The first method is based on an associative plasticity model for the concrete, in which gradual compressive crushing or tensile cracking on the cross-section, as well as along the member, is considered. The FRP reinforcement exhibits linear elastic response up until brittle fracture at a relatively high fracture strain. The second method is based on an experimentally developed moment displacement relationship for the member. For this model the inelastic behaviour is assumed to be lumped at springs connected to the ends of the member. Computer programs are developed which incorporate these models and results based on both models are compared for the cases of a cantilever column and a structural frame.