Messa in sicurezza di edifici storici

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1 Messa in sicurezza di edifici storici Gian Paolo Cimellaro Associate Professor Politecnico di Torino, Italy October 31, 2016

2 Outline Tectonic summary; Historical seismicity; Seismic sequence; Main event of October 30th, 2016 (Mw 6.5) Conclusion.

3 Tectonic summary The Italian territory is located between African and Eurasia plate. The Apennines region was generated by the subduction of the Adria microplate (part of African plate) beneath Eurasia

4 Tectonic summary Individual Seismogenic Source for the Central Apennins zone (INGV, 2016).

5 Historical seismicity Historical Catalogue of strong earthquake from 1000 to (INGV, 2016) Mw Number of earthquakes >= 7.0 1

6 Seismic sequence Seismic sequence in Central Italy from August 24 to October 30. INGV (2016)

7 (Mw 6.5) Fault mechanism

8 (ML 6.5) Shakemap in the zone close to the epicenter for the main event of 6.5 ML (INGV, 2016).

9 (Mw 6.5) Recording stations Epicenter: Lat: N, Long: E (City of Norcia)

10 (Mw 6.5) Selected recording stations Station Location Re [km] NRC Norcia 5.40 ACT Acquasanta Terme T1201 Domo FOC Colfiorito 27.10

11 (Mw 6.5) Horizontal peak ground accelerations PGA Horizontal Components PGA [cm/s2] E W N S ACT FOC T1201 NRC

12 (Mw 6.5) Vertical peak ground accelerations PGA Vertical Component PGA [cm/s2] U D ACT FOC T1201 NRC

13 (Mw 6.5) Horizontal components of Arias Intensity Ia componenti E W NRC T FOC ACT INTENSITA' DI ARIAS [CM/S] N S component NRC T FOC ACT INTENSITA' DI ARIAS [CM/S]

14 (Mw 6.5) Comparison between horizontal spectra and Design Code spectra (SLV and SLC) SLC SLV Acquasanta_EW Acquasanta_NS 1250 Sa(T) [m/s2] Periodo [s]

15 (Mw 6.5) Comparison between horizontal spectra and Design Code spectra (SLV and SLC) SLC SLV Foligno_EW Foligno_NS 1250 Sa(T) [m/s2] Periodo [s]

16 (Mw 6.5) Comparison between horizontal spectra and Design Code spectra (SLV and SLC) SLC SLV Domo_EW Domo_NS 1250 Sa(T) [m/s2] Periodo [s]

17 (Mw 6.5) Comparison between horizontal spectra and Design Code spectra (SLV and SLC) SLC SLV Norcia_EW Norcia_NS 1250 Sa(T) [m/s2] Periodo [s]

18 (Mw 6.5) PGA attenuation PGA ATTENUATION 500 Recorded PGA Log. (Recorded PGA) 400 PGA [cm/s2] Distanza Epicentrale [Km]

19 (Mw 6.5) Comparison of the PGA attenuation Comparison of the PGA Attenuation 500 Regressione Log. Ambraseys 96 (Soft) Log. (Regressione Log.) 400 PGA [cm/s2] Distanza Epicentrale [Km]

20 (Mw 6.5) PGV attenuation 100 PGV Attenuation 80 PGV [cm/s] Distanza Epicentrale [Km]

21 Castelluccio Town general view

22 Castelluccio soft story behavior

23 Castelluccio Open stirrups

24 Ancient city walls - Norcia POLITECNICO DI TORINO DISEG G. P. CIMELLARO

25 Ancient city walls - Norcia Incomplete shoring up intervention POLITECNICO DI TORINO DISEG G. P. CIMELLARO

26 Monastery of Sant Antonio -Norcia Complete shoring up intervention

27 Monastery of Sant Antonio -Norcia Complete shoring up intervention POLITECNICO DI TORINO DISEG G. P. CIMELLARO

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