Development of a Computational Limit Analysis-Based Tool for Seismic Vulnerability Assessment in Historical Masonry Buildings

Based on kinematics theory, this paper proposes a computational tool that can rapidly assess the damage mechanism of aggregates in masonry structures. In this approach, some pre-assigned local mechanisms are assessed on a three-dimensional (3D) model of the whole aggregate, on which the shape of the involved macro-blocks is directly modelled. The method uses the principle of virtual work to calculate the horizontal load multiplier, judge the local failure mechanism, and carry out the reinforcement design. The method realizes coding in AutoLIS language function, uses AutoCAD software to model, and then realizes operation. The case analysed in the paper is an example from the 17 masonry aggregates located in the historical centre of Arsita. This aggregate is referred to as “Il Torrione”.