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This paper presents an analytical method for large-scale vulnerability assessment used in order to simulate damage scenarios corresponding to those observed during past earthquakes in Italy. The method, already published in the technical literature with the acronym SP-BELA (Simplified Pushover-Based Earthquake Loss Assessment), has been adopted to calculate the vulnerability of the Italian building stock classified as reinforced concrete and masonry buildings. The current paper describes the calibration of the method through the comparison of numerically calculated damage scenarios and data on observed damage collected during earthquakes occurred in Italy starting from the 1976 Friuli earthquake. The use of observed damage data allowed to validate the method and to add reliability to the calculation of damage scenarios. The damage scenarios are useful to plan the emergency response immediately after an earthquake. Finally, a Web Geographical Interface System tool that implements SP-BELA to calculate seismic risk and real time damage scenario is presented. [ABSTRACT FROM AUTHOR]

Damage scenarios for the main events of the 2016 Central Italy earthquake sequence have been simulated. In order to describe the seismic performance of the as-built in the area, the mechanic based method simplified pushover-based earthquake loss assessment has been adopted. This methodology has been extensively validated by means of comparison between numerically calculated damage scenario and observed damage. These data have been collected during the surveys in areas hit by earthquakes in Italy in the last 40 years (starting form 1976 Friuli earthquake until 2012 Emilia earthquake). The calculation of damage scenario has been performed in a user friendly WebGIS platform developed for the Italian Department of Civil Protection. The paper gives an overview of methods and informatics tools prior to present the results of the damage scenario. The results of damage scenarios are summarized in tables, charts and maps. Further, improvements of the tools now available are also identified for future developments. [ABSTRACT FROM AUTHOR]