A consistent constitutive model for two-dimensional nonlinear analysis of reinforced concrete structures is presented. The model is able to describe the behavior in uncracked stage, as well as in singly and doubly cracked stages. By schematizing the behavior of concrete and reinforcement between adjacent cracks as that of two springs working in parallel, while these and the phenomena which are generated in crack (as tension stiffening, dowel action, aggregate interlock, etc.) as springs working in series, secant stiffness matrix is obtained in direct mode. The reliability and capability of the proposed constitutive model are proved by analyzing results of well-known tests on plane stress elements, with particular reference to those which collapse when secondary crack forms.
|Titolo:||Prediction of crack pattern in reinforced concrete members under in-plane stresses|
|Data di pubblicazione:||2006|
|Appare nelle tipologie:||4.1b Atto convegno Volume|