Industrial installations, such as food storage and handling systems (Fig. 1), might be characterized by pendulum oscillating masses. When such installations are placed on an elevated story of a building, its seismic response is influenced by dynamic coupling effects of the building vibrations and the pendulum mass oscillations. In the present paper, with reference to RC framed buildings (Fig. 2), such an interaction is investigated through geometrically non-linear dynamic transient analyses in which the earthquake excitation is inputted as artificial accelerograms compatible with design response spectra for damage limit state. The dynamic response is compared with that obtained for a model of the building where the pendulum masses are assumed to be attached to the building structures. The final aim of the present study is to highlight possible beneficial effects on the seismic response of the building of the oscillating masses belonging to the industrial installation, which might act as a pendulum mass damper. A first model of the entire building has been carried out using Abaqus code, therefore the structure has been modelled as a cantilever beam using Straus7 software.
Fig. 1 Fig. 2
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