Title: Compressed steel fibre-reinforced concrete slab in joint of steel-concrete composite frame structure

Authors: Petr Červenka; Jakub Dolejš

Addresses: Department of Steel and Timber Structures, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 2077/7, 166 29 Praha 6 – Dejvice, Czech Republic ' Department of Steel and Timber Structures, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 2077/7, 166 29 Praha 6 – Dejvice, Czech Republic

Abstract: This paper deals with a steel fibre-reinforced concrete (SFRC) slab in compression as a composite steel-concrete frame joint component. Based on the results of an experiment with a realistic-sized steel-concrete specimen, a numerical model has been validated in Atena Science. Based on a parametric study with these models, an analytical relationship was derived for the resistance and stiffness of the steel fibre-reinforced concrete slab in compression. In contrast to the standard procedure given in Annex C of EN 1998-1:2004 (Eurocode 8), the new procedure is designed for a steel fibre-reinforced concrete slab. The proposed analytical solutions give approximately 20% higher values of the resistance and initial stiffness factor than the results calculated according to EN 1998-1:2004 (Eurocode 8) and EN 1993-1-8:2005 (Eurocode 3).

Keywords: composite steel-concrete frame; steel fibre-reinforced concrete; SFRC; composite steel-concrete joint; slab in compression; effective width; earthquake; FEM.

DOI: 10.1504/IJSTRUCTE.2026.153783

International Journal of Structural Engineering, 2026 Vol.16 No.2, pp.157 - 191

Received: 25 Nov 2024
Accepted: 11 Jul 2025
Published online: 26 May 2026 *

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