DYNAMIC IDENTIFICATION AND MODELLING OF A RC HOSPITAL BUILDING

Abstract. The conservation of structures mainly relies on our ability to monitor their aging and to promptly detect relevant damage. Dynamic characterization is considered a powerful technique for testing the conservation status of buildings as their natural frequencies, damp-ing and modal shapes are directly related to their stiffness and structural integrity. In this work a dynamic monitoring based on ambient vibrations measurements has been performed on a case-study, i.e. a RC 4-storey Hospital building. An identification procedure based on the Enhanced Frequency Domain Decomposition has been performed to evaluate the modal parameters of the building. The dynamic information provided by the experimental analysis have been compared to the one found by performing the analytical modal analysis. To this purpose a structural model has been built, by representing all the major geometrical and me-chanical properties of the building, through the Seismostruct software. The comparison has pointed out the role of the non-structural component and of the interaction between the moni-tored structure and the adjacent buildings on the dynamic response of the case-study.