Dynamic Identification on an Irregular Structure

This paper presents the experimental analysis on “Municipal Headquarters” of Palagianello Town. is a strategic building with high complexity at planimetric and altimetric level, so it interesting evaluation its structural dynamic performance in case seismic emergency management. To this aim, environmental vibrations have been acquired situ accelerometers positioned well-defined points. The data were analyzed an easy accurate process that includes Operational Modal Analysis (OMA), to identify natural frequencies, mode shapes damping ratios non-destructive testings. Subsequently, results compared those two numerical models (with without infill walls) defined by means finite element method (FEM); allowed for better calibration model arrive more realistic conclusions about behavior structure. discusses influence stiffness contribution masonry infills properties building. Moreover, shows adoption ad hoc chosen locations sensors could accuracy results, especially structures characterized irregularities.