Flat slab response for seismic and cyclic actions prediction with numerical models

• Published in: Engineering structures Vol. 289; p. 116307
• Main Authors: Coronelli, Dario, Muttoni, Aurelio, Martinelli, Luca, Del Vecchio, Ciro, Gaetani d'Aragona, Marco, Lignola, Gian Piero, Prota, Andrea, Kagermanov, Alexander, Marinković, Marko
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 15.08.2023
• ISSN: 0141-0296; 1873-7323
• DOI: 10.1016/j.engstruct.2023.116307

•The first blind competition for modelling of flat slabs for lateral actions is described.•The tests for a full-scale reinforced concrete flat slab frame were predicted.•Results of a 3D Nonlinear finite element model and two slab and frame models are shown.•The Critical Shear Crack Theory is included in the fib MC2010 was adopted.•Indications are given for practical design purposes and research developments. As an outcome of a recent European research project, the modelling of the response of flat slab structures for seismic and cyclic loading was the object of a blind competition. No other blind tests are available in the literature on this topic. The test results concern a full-scale, two-storey, three-by two bay reinforced concrete flat slab frame. The seismic tests were carried out using a hybrid pseudo-dynamic test up to the ULS design excitation. The cyclic test reached a drift capacity of 2.5% and 6% in two concatenated tests. A synthesis of the models of three participants is provided, with one 3D NLFE (Nonlinear finite element) models and two slab and frame models. The CSCT (Critical Shear Crack Theory) model included in the fib MC2010 was adopted in the two latter to predict punching failure. The results are presented and discussed. Conclusions are drawn on research developments and practical approaches.