Abstract:
In this study, a two storey steel structure was represented by a scaled single-degree-of-freedom model. The moment capacity and the plastic hinge development in the structure were simulated using an artificial plastic hinge. To investigate the interaction between structural ductile behaviour and soil plastic deformation, shake table tests were performed. The excitation was a ground motion stochastically simulated based on the Japanese design spectrum. The nonlinearity of the foundation soil was incorporated using sand in a sand box. The outcome reveals that an increase of plastic hinge development in the structure, by lowering the moment capacity, reduces the footing permanent rotation due to nonlinear soil footing-structure interaction.
