GNGTS 2022 - Atti del 40° Convegno Nazionale

GNGTS 2022 Sessione 2.2 325 Fig. 3 - Comparison between the median of the spectral acceleration responses of the seven accelerograms selected as seismic inputs for site response simulation at Altamura, compared with the local design spectrum on soils of category A for the Ultimate State Limit. First results show that the procedure allows to select a set of accelerograms combining the requirements of representing differentiated seismic scenarios and maintaining a good average agreement with the local design spectrum without introducing, to reach this agreement, accelerograms characterised by SA values strongly discarding both by excess and by defect from those of the design spectrum. As an example, Fig. 2 shows the set of accelerograms obtained for Altamura (BA) compared to the local design spectrum calculated according to the NTC18. Fig. 3 shows the median of the SA values for the selected set of accelerograms compared to the NTC18 spectrum. Acknowledgements. This study was conducted within the programme of SM of the Apulia Region, financed by the National Department of Civil Protection and by Civil Protection Office of the Apulian Regional Administration. We are particularly grateful to Antonio Pugliese for having provided the original source code in FORTRAN of the programme NERO_LITE for the generation of the simulated seismograms. References Bazzurro P. and Cornell C.A.; 1999: Disaggregation of seismic hazard. Bull Seism. Soc. Amer. 89:501-520. CTMS; 2020: Microzonazione sismica - Standard di rappresentazione e archiviazione informatica - Versione 4.2 . Roma, 138 pp. Gruppo di lavoro MS; 2008. Indirizzi e Criteri per la Microzonazione Sismica . Conferenza delle Regioni e delle Province autonome - Dipartimento della protezione civile, Roma, 3 vol. e DVD. Iervolino I., Galasso C. and Cosenza E.; 2010: Rexel: computer aided record selection for code-based seismic structural analysis . Bull Earthq Eng 8:339-362. Luzi L., Lanzano G., Felicetta C., D’Amico M. C., Russo E., Sgobba S., Pacor, F., and ORFEUS Working Group 5; 2020: Engineering Strong Motion Database (ESM) (Version 2.0) . Istituto Nazionale di Geofisica e Vulcanologia (INGV). MIT; 2018: Aggiornamento delle “Norme tecniche per le costruzioni”. Supplemento ordinario alla “Gazzetta Ufficiale n. 42 del 20 febbraio 2018 - S.O. n. 8. Russo E., Felicetta C., D’Amico M., Sgobba S., Lanzano G., Mascandola C., Pacor F. and Luzi L.; 2022: Italian Accelerometric Archive v3.2. Istituto Nazionale di Geofisica e Vulcanologia, Dipartimento della Protezione Civile Nazionale, doi: 10.13127/itaca.3.2. Sabetta F., Pugliese A., Fiorentino G., Lanzano G. and Luzi L.; 2021: Simulation of non-stationary stochastic ground motions based on recent Italian earthquakes . Bull. Earth. Eng. 19:3287-3315. https://doi.org/10.1007/s10518- 021-01077-1. Sgobba S., Felicetta C., Russo E., D’Amico M., Lanzano G., Pacor F., Luzi L., Baraschino R., Baltzopoulos G. and Iervolino I.; 2021: The online graphical user interface of REXELweb for the selection of accelerograms from the Engineering Strong Motion database (ESM) . 39° Conference of Gruppo Nazionale di Geofisica della Terra Solida (GNGTS), 22 - 24 July 2021, online.