Aplicação dos Elementos Finitos Semi-Embutidos na Simulação de Vigas de Concreto Protendido

Resumo

This article deals with the application of the semi-embedded method in prestressed concrete beams in
modeling based on the Finite Element Method. In the case of prestressed concrete structures, their computational
representation must consider the heterogeneity of the materials that constitute the structure and the way these
materials interact. Thus, the objective of this paper is to present the formulation of the semi-embedded method
used as an alternative for the numerical simulation of prestressed concrete beams and apply the formulation in a
simply supported beam with available experimental data . In the semi-embedded method, unlike the other methods,
the reinforcement is discretized into bar elements and thus, the boundary conditions can be applied to each bar
node, allowing a more realistic approach. Three analysis for different concrete models were performed using the
Mazars model, Drucker-Prager model, and the Damage model. In the comparison, it is noted that the numerical
results are fairly agree with the experimental data, thus concluding that it is possible to represent prestressing in
concrete beams using the semi-embedded method.