Adjacent interacting masonry structures: shake table test blind prediction discrete element method simulation

Abstract This study presents the numerical simulation of a shake table experimental earthquake campaign building aggregate composed two adjacent unreinforced rubble stone masonry buildings. The testing was performed with purpose studying interaction between single-storey and two-storey connected dry joint consisting smooth mortared surface. Before performing testing, various research teams were sent construction details to participate in blind prediction competition using different strategies. approach reported herein simulate tests is discrete element method (DEM) rigid elements damage deformation lumped inter-block joints that represent mortar interfaces governed by non-linear Mohr–Coulomb constitutive laws. material properties implemented model after calibrating piers shear observed unrealistically stiff. Hence, it reduced based on outcome pushover eigenvalue analyses. A sequence earthquakes incremental acceleration input real models. Numerical overestimation displacement probably due underestimating damping ratio. Unexpected sliding occurred at early stages simulation. However, overall behaviour terms base force, progression well captured DEM model. in-plane flexural rocking mechanism correctly simulated. Damage interface buildings separation pounding also reasonably predicted.