ABSTRACT
Old buildings and monuments are greatly different from new constructions for several reasons: their state of conservation, their structural weaknesses and their discrete nature. This is why classical numerical modelling methods, used generally to study their stability, are not suitable for such analysis. As a result of its capacity to provide a mechanical and geometrical representation of joints (mortars) and blocks (stones or bricks), the Distinct Element Method (DEM) can simulate successfully the non-linear behaviour of masonry structures. Furthermore, this method allows dynamic simulations in a very physical way which is easy to understand. Consequently, most of the failure modes of masonry structures under seismic loading can be studied with the help of this method. In this paper, the seismic behaviour of old stone masonry walls and arches are analysed.
