Eleven pull-push specimens with commonly used headed stud shear connectors and six full-scale ste... more Eleven pull-push specimens with commonly used headed stud shear connectors and six full-scale steel-concrete composite substructures with full and partial shear connection were tested. Inelastic responses to different sets of variable, constant and random reversed displacements were analysed and the importance of cyclic loading on the strength softening, on the ductility deterioration and on the structural damage of components and members was scrutinized. Thereby, some design conclusions have been drawn for members with composite dissipative zones and different fatigue life models have been investigated to establish suitable indices of structural damage. Moreover, finite element simulations set both to reproduce composite beam behaviour and to evaluate different modelling assumptions as well as local effects were carried out. In detail, analytical issues related to the effective width of concrete slab, to the force-slip relations of shear connectors and to the bond-slip phenomenon relevant to longitudinal reinforcing bars were investigated.
Eleven pull-push specimens with commonly used headed stud shear connectors and six full-scale ste... more Eleven pull-push specimens with commonly used headed stud shear connectors and six full-scale steel-concrete composite substructures with full and partial shear connection were tested. Inelastic responses to different sets of variable, constant and random reversed displacements were analysed and the importance of cyclic loading on the strength softening, on the ductility deterioration and on the structural damage of components and members was scrutinized. Thereby, some design conclusions have been drawn for members with composite dissipative zones and different fatigue life models have been investigated to establish suitable indices of structural damage. Moreover, finite element simulations set both to reproduce composite beam behaviour and to evaluate different modelling assumptions as well as local effects were carried out. In detail, analytical issues related to the effective width of concrete slab, to the force-slip relations of shear connectors and to the bond-slip phenomenon relevant to longitudinal reinforcing bars were investigated.
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