GNGTS 2023 - Atti del 41° Convegno Nazionale

Session 2.2 GNGTS 2023 FRIBAS database: towards specific T-H relationships for RC and URM buildings M. R. Gallipoli 1 , B. Petrovic 2 , G. Calamita 1 , N. Tragni 1 , C. Scaini 2 , C. Barnaba 2 , M. Vona 3 , S. Parolai 2 1 Italian National Research Council (CNR-IMAA), Tito Scalo, Italy 2 National Institute of Oceanography and Applied Geophysics – OGS, Italy 3 School of Engineering, University of Basilicata, Potenza, Italy, Potenza, Italy We present here the open access FRIBAS database (https://doi.org/10.5281/zenodo.6505442) which contains a collection of information on 312 buildings (71 masonry, 237 reinforced concrete, and 4 mixed types) and their corresponding foundation soils located in southern and northern Italy. Each building in FRIBAS is characterised by 37 parameters related to the location, the main typological, geometrical, structural and foundation characteristics, and the geological and seismic context. The fundamental periods of buildings and soils were estimated experimentally using ambient noise measurements. In this study, we examine the FRIBAS dataset to investigate how construction materials of buildings and soil types may affect the building period and its relationship to the height. Our results show that it is necessary to go beyond a ‘one-fits-all’ numerical period-height (T-H) relationship given by seismic codes for generic building typologies and develop specific T-H relationships that consider both soil and building typologies. Given the importance of soil-structure interaction effects to the dynamic response of buildings, these effects should be accounted for in seismic codes that provide much longer periods than those determined experimentally.