METHOD OF APPLICATION OF FINITE ELEMENT SEMI-EMBEDDED IN CONCRETE BEAMS SIMULATION PRESTRESSED

Resumo

Computer modeling has become an increasingly integral part of the activities of
researchers and civil engineering professionals. To characterize a model that best represents a
material, one must consider the knowledge of their mechanical behavior. In this context, this
article aims to review the constitutive models that are being used to model prestressed concrete
structures and present a representation proposal for this type of structure based on the model
defined by Durand (2008). This method stems from an adaptation of two already consolidated
methods for this type of structure, the embedded method, and the discrete method and was
adopted as a semi-embedded method. It differs from the other methods, the reinforcing steel
shall be discretized in front of elements and, such as the conditions of contact cannot be
corrected in each node of elements. The final element of the bar is obtained after the
reinforcement and finite element discretization of the concrete, being necessary to obtain stress
and strain fields in the bars and together with the interface. Thus, from the model, it can be said
that the semi-supplied method proposed is more advantageous than other methods of literature,
since, from it, an example of analysis for concrete and reinforcement. Moreover, by simulating
the element with its reinforcement, it is understood that the simulated concrete structures are
approximated in a context closer to the real one.