Sfrc Slab in Compression in Steel-concrete Composite Frame Joints

The objective of the research is a steel fiber‐reinforced concrete slab in compression in a composite frame joint. EN 1998‐1 relates only to composite joints with common concrete slab and it prescribes two mechanisms. By these mechanisms, it is prescribed inaccurate formula for the effective width calculation of a common concrete slab in compression in the nodal zone, as the standard procedure does not consider the contribution of the confinement effect to the resistance of mechanism 1. Moreover, some publications describe different inclination of the concrete struts of mechanism 2. The aim of this work is to derive a more accurate formula for calculation the effective width of the steel fiber‐reinforced concrete slab in compression in the nodal zone. Experiment with real‐sized isolated composite joint, validation of numerical models and parametric study of composite joints with fiber‐reinforced concrete slab are the main steps of this research.