Performance-based assessment of the Arsenal De Milly of the mediavel City of Rhodes

The paper focuses on the performance-based assessment (PBA) of the monument named «Arsenal De Milly» which is located in the Medieval City of Rhodes in Greece. It is an unreinforced masonry structure characterized by an important mass value and is founded on a soil profile that consists of soft and stiff soil layers. As known, usually PBA refers to the use of nonlinear static procedures. In particular, in the paper it has been performed by applying the procedure proposed in the framework of PERPETUATE project (www.perpetuate.eu) for the performance-based earthquake preservation of cultural heritage assets. The seismic response of the structure has been analysed by comparing the results obtained from different modelling strategies, in particular: (i) the finite element approach (through a 3D model using brick finite elements); (ii) the structural element modelling approach (through a 3D model based on the equivalent frame approach); (iii) the macro-block modelling one. Both linear and non linear analyses have been performed. Moreover, the results from some microtremor measurements addressed to the structural identification of the building have been used to calibrate the mechanical parameters to be adopted in the models in the elastic range.