Per Luigi Chiozza e Luigi Pasteur.

Università degli Studi di Triest

Numerical approach to evaluate the load bearing capacity of RC dapped-end beams subjected to corrosion

In this paper, the load-bearing capacity of a RC dapped-end beams subjected to corrosion is analyzed by proposing a numerical approach. In particular, nonlinear finite element analyses (NLFEA) are carried out by adopting a multi-layered shell element approach with the PARC_CL 2.1 crack model implemented as user subroutine in Abaqus. Firstly, to validate the numerical approach, the FE results are compared against uncorroded dapped-end beams. Secondly, the degradation effects induced by corrosion are investigated by considering: (i) the cross-sectional and mechanical properties reduction of reinforcing steel bars and (ii) the steel-to-concrete interaction. Finally, the relevant results are outlined