Authors:
Khalil Belakhdar;
Abstract:
This paper presents an implementation of a rational three-dimensional nonlinear finite element model for
evaluating the behavior of reinforced concrete slabs strengthened with shear bolts under transverse load. The
concrete was idealized by using eight-nodded brick elements. While both flexural reinforcement and the shear
bolts were modeled as truss elements, a perfected bond between brick elements and truss elements was assumed.
The nonlinear behavior of concrete in compression is simulated by an elasto-plastic work-hardening model, and
in tension a suitable post-cracking model based on tension stiffening and shear retention models are employed.
The steel was simulated using an elastic-full plastic model. The validity of the theoretical formulations and the
program used was verified through comparison with available experimental data, and the agreement has proven
to be good. A parametric study has been also carried out to investigate the influence of the shear bolts’ diameter
and number of bolts’ rows around the column-slab connection, on the ductility and ultimate load capacity of
slabs.
Keywords:
Reinforced concrete plates, Nonlinear FE analysis of RC slabs, Shear capacity of concrete slabs, Shear bolts, Punching shear, Slabs strengthening.