Analysis of three-dimensional prestressed concrete structures using a non-linear material model

The aim of the present work is to describe a numerical approach to the analysis of three-dimensional reinforced concrete structures subject to prestressing. The finite element approach developed is described, with particular regard to the configuration of finite elements in relation to numerical model generation. An elasto-viscoplastic material law is adopted. The non-linear formulation is discussed, pointing out theoretical and numerical aspects. The computational examples, carried out using a specially developed code, aim at illustrating the characteristic aspects of the proposed approach.