Recent developments on computational modeling of material failure in plain and reinforced concrete structures

J. OLIVER, A.E HUESPE, G. DÍAZ, P.J. SÁNCHEZ

Rohrmoos

Congreso; EURO-C 2010 Computational Modelling of Concrete Structure; 2010

New developments for the computational simulation of plain and reinforced concrete structures are presented. Two models based on different length scale are proposed: one, at the macroscopic level, considers a homogeneized material. Other, at the mesoscale level describes specifically each mechanical component of the reinforced concrete members. Numerical aplications of both approaches addressed to different problems are presented.  Particular attention is given to the plain concrete simulation in confined regimes in order to capture the high stress triaxiality compresive states which are typical in reinforced structures. The plain concrete is described via a new phenomenological model which can be characterized by a low number of parameters