Earthquakes and Structures

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Evaluation of structural operativity of two strategic buildings through Seismic Model

  • Foti, Dora (Dipartimento di Scienze dell'Ingegneria Civile e dell'Architettura) ;
  • Giannoccaro, Nicola Ivan (Dipartimento di Ingegneria dell'Innovazione, Universita del Salento) ;
  • Greco, Pierluigi (Dipartimento di Scienze dell'Ingegneria Civile e dell'Architettura) ;
  • Lerna, Michela (Dipartimento di Scienze dell'Ingegneria Civile e dell'Architettura) ;
  • Paolicelli, Raffaele (Dipartimento di Scienze dell'Ingegneria Civile e dell'Architettura) ;
  • Vacca, Vitantonio (Consiglio Nazionale delle Ricerche - Istituto di Geologia Ambientale e Geoingegneria)
  • Received : 2020.03.25
  • Accepted : 2020.06.10
  • Published : 2020.07.25
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Abstract

This paper presents the experimental application of a new method for seismic vulnerability assessment of buildings recently introduced in literature, the SMAV (Seismic Model Ambient Vibration) methodology with reference to their operational limit state. The importance of this kind of evaluation arises from the civil protection necessity that some buildings, considered strategic for seismic emergency management, should retain their functionality also after a destructive earthquake. They do not suffer such damage as to compromise the operation within a framework of assessment of the overall capacity of the urban system. To this end, for the characterization of their operational vulnerability, a Structural Operational Index (IOPS) has been considered. In particular, the dynamic environmental vibrations of the two considered strategic buildings, the fire station and the town hall building of a small town in the South of Italy, have been monitored by positioning accelerometers in well-defined points. These measurements were processed through modern Operational Modal Analysis techniques (OMA) in order to identify natural frequencies and modal shapes. Once these parameters have been determined, the structural operational efficiency index of the buildings has been determined evaluating the seismic vulnerability of the strategic structures analyzed. his study aimed to develop a model to accurately predict the acceleration of structural systems during an earthquake.

Keywords

Acknowledgement

This work was carried out as part of a research agreement among Polytechnic University of Bari (coordinator Prof. Dora Foti), University of Basilicata (coordinator Prof. Felice Ponzo), and the Institute of Environmental Geology and Geoengineering of the National Research Council (coordinator Federico Mori). Research activities were performed in the framework of the project "PO Governance 2014-2020 project on the reduction of seismic, volcanic and hydrogeological risk for civil protection purposes - CIG 6980737E65 - CUP J59G16000160006", funded by the Presidency of the Council of Ministers Department of Civil Protection.

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