Numerical analysis of two pile caps reinforced concrete with partially embedded and shear key interface

Resumo

On Precast concrete structures the column foundation connections can occur through the socket
foundation, which can be embedded, partially embedded or external, with socket walls over the pile caps. This
paper presents an experimental study about two pile caps reinforced concrete with partially embedded socket
submitted to central load, using 1:2 scaled models. In the analyzed models, the shear key interface between the
socket walls and column was considered. Additionally, a numerical analysis in the Abaqus software was
performed, considering the physical non-linearity of the materials. The results are compared to a reference model
that presents monolithic connections between the column and pile caps. It is observed that the ultimate load of
pile caps with partially embedded socket present less magnitude than the reference model, and that the presence
of additional reinforcement does not significantly change the behavior of pile caps.