DETERMINAÇÃO DA CAPACIDADE RESISTENTE DE SEÇÕES GENÉRICAS DE CONCRETO ARMADO USANDO O MÉTODO DA COMPATIBILIDADE DE DEFORMAÇÕES

Resumo

The development of computational routines for structural analysis allows great engineering
evolutions. With its use, more accurate results are obtained and the study of more complex
architecturally cases become possible. The present work aims at the dvelopment of an algorithm for
calculate the bearing capacity of an arbitrary reinforced concrete cross section. The Strain
Compatibility Method (SCM) was used as numerical formulation to obtain the normal effort-bending
moment interaction curves. This method is based on Euler-Bernoulli's theory for the evaluation of
cross sections deformations admitting them linear and continuous. The constitutive models used for
steel rebars and concrete were based on the requirements of NBR 6118 (2014). The solution of the
non-linear problem and obtaining the moment-curvature relationship were approached through an
incremental-iterative strategy coupled to the Newton-Raphson method. In addition, the scanning of the
strain domains was carried out in a comparative manner. It is hoped that the results obtained will be
compatible with the pre-existing literatures and even more accurate.