In the framework of the delineation of seismic risk reduction strategies, there is the need to identify priorities for interventions based on seismic risk evaluations through the most updated scientific knowledge of its three components: seismic hazard, vulnerability and exposed value. On the other hand, the limited resources available strongly suggest to search for methodologies which, providing generally same results and validity, reduce the time and costs associated with such assessments, particularly for seismic hazard when a list is required for defining priorities in retrofitting on a huge number of buildings located on a wide territory (Grimaz et al., 2010a). This lead the scientists to focus on research, testing and tuning of screening methods to characterize the seismic response of sites and structures because, in damage forecasting at a territorial level, the quantification of the ground shaking is of limited utility, unless it is not coupled with estimation of site effects and building vulnerability. Consequently, the identification of the most damageable buildings, taking also into account the site effects and the dynamic behaviour of the site-building system, seems to be the most correct and rational way to follow (Grimaz et al., 2010a). This approach has been adopted by the Italian legislation (Presidente del Consiglio dei Ministri, 2003), even though the principal focus is addressed to the vulnerability assessment. This is made using evaluation forms organized on two levels of knowledge, conversely, site effects and exposed values are only roughly estimated considering, respectively, the soil class and the occupancy. The Civil Protection of the Friuli Venezia Giulia Region financed the ASSESS project (Analysis of the seismic scenarios of the school buildings for a definition of retrofitting priorities for seismic risk reduction), aimed at evaluating the seismic risk of all the schools located in the regional territory. In this framework, a quick methodology, still under test, has been defined for characterizing all sites with their soil uniform hazard response spectrum (SUHRS).

A paradigm of quik seismic zonation for risk assessment of strategic buildings at a regional scale

GRIMAZ, Stefano;BARAZZA, Fausto;MALISAN, Petra;
2011

Abstract

In the framework of the delineation of seismic risk reduction strategies, there is the need to identify priorities for interventions based on seismic risk evaluations through the most updated scientific knowledge of its three components: seismic hazard, vulnerability and exposed value. On the other hand, the limited resources available strongly suggest to search for methodologies which, providing generally same results and validity, reduce the time and costs associated with such assessments, particularly for seismic hazard when a list is required for defining priorities in retrofitting on a huge number of buildings located on a wide territory (Grimaz et al., 2010a). This lead the scientists to focus on research, testing and tuning of screening methods to characterize the seismic response of sites and structures because, in damage forecasting at a territorial level, the quantification of the ground shaking is of limited utility, unless it is not coupled with estimation of site effects and building vulnerability. Consequently, the identification of the most damageable buildings, taking also into account the site effects and the dynamic behaviour of the site-building system, seems to be the most correct and rational way to follow (Grimaz et al., 2010a). This approach has been adopted by the Italian legislation (Presidente del Consiglio dei Ministri, 2003), even though the principal focus is addressed to the vulnerability assessment. This is made using evaluation forms organized on two levels of knowledge, conversely, site effects and exposed values are only roughly estimated considering, respectively, the soil class and the occupancy. The Civil Protection of the Friuli Venezia Giulia Region financed the ASSESS project (Analysis of the seismic scenarios of the school buildings for a definition of retrofitting priorities for seismic risk reduction), aimed at evaluating the seismic risk of all the schools located in the regional territory. In this framework, a quick methodology, still under test, has been defined for characterizing all sites with their soil uniform hazard response spectrum (SUHRS).
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11390/867123
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