Seismic response of nonlinear soil-structure interaction systems through the Preisach formalism: the Messina Bell Tower case study

In this paper the seismic response of linear behaving structures resting on compliant soil is addressed through application Preisach formalism to capture nonlinearities. The novel model hysteresis for nonlinear soil-structure interaction problems explored study a real structure. Through harmonic balance procedure, furthermore, simplified springs and dashpots are derived in closed form ready accurate evaluation response. selected case bell tower Messina Cathedral Italy. Bell Tower hosts largest most complex mechanical astronomical clock world it has been recently equipped by permanent monitoring system. A pertinent finite element (FE) including superstructure underneath, defined using authentic drawings engineering design reports. modal properties FE have compared with experimental ones, identified from environmental noise recorded Furthermore, validated means acceleration time histories at different floors during two independent events. incremental dynamic analysis also performed. obtained complete analysis, proposed lumped parameter model, assembled dashpots. results well agreement, offering an alternative promising strategy studies.