Seismic fragility assessment of masonry aggregates with identical structural units in row

In civil engineering field, it is a common simplification to consider a building as isolated, even if it belongs to an aggregation of structural units. Thus, the first part of this work is focused on the fragility analysis of masonry structural units, considered as a part of a row aggregate and analyzed at first as isolated. Some variabilities and uncertainties involved in the problem are considered, generating a set of simulations through the Response Surface statistical procedure. The data obrained from the simulations were used to plot the fragility curves, by applying the Monte Carlo method. Afterwards, the masonry structural units have been aggregated in row in order to compare their seismic fragility with that of the isolated ones. The reults showed relevant differencies if different directions of the seismic action and different positions of the structural unit along the aggregate are considered.