On the collapse analysis of single span masonry/stone arch bridges with fill interactionOn the collapse analysis of single span masonry/stone arch bridges with fill interaction Αφίσα σε Συνέδριο Conference Poster 2015-10-122007enIn this paper a comparison between two non – linear finite element models which have been developed for the analysis of masonry arches is presented. According to the first model, the geometry of the arch is divided into a number of unilateral contact interfaces which simulate potential cracks. Opening or sliding for some of the interfaces indicate crack initiation. The second model initially uses two-dimensional finite elements for the simulation of the arch. When tensile stresses appear, the corresponding elements are replaced by non linear gap elements which represent cracks. In both models the fill over the arch is taken into account. Moreover, the ultimate load and the collapse mechanism have been calculated by using a pathfollowing (load incrementation) technique. Both models are developed and applied on a real scale masonry arch, so that the results can be compared.http://creativecommons.org/licenses/by/4.0/5th International Conference on Arch Bridges Stavroulakis Georgios Σταυρουλακης Γεωργιος G.A. Drosopoulos M. Betti Applied mechanics Engineering, Mechanical mechanics applied applied mechanics engineering mechanical