Abstract
The large-scale seismic risk assessment is a crucial point for safeguarding people and planning adequate mitigation plans in urban areas. The current research work aims at analysing a sector of the historic centre of Senerchia, located in the province of Avellino, in order to assess the seismic vulnerability and damage of old masonry building compounds. First, the typological classification of the inspected building aggregates is developed using the CARTIS form developed by the PLINIVS research centre in collaboration with the Italian Civil Protection Department. The global seismic vulnerability assessment of the building sample is carried out using the macroseismic method according to the EMS-98 scale in order to identify the buildings most susceptible to seismic damage. Furthermore, 12 damage scenarios are developed by means of an appropriate seismic attenuation law. Finally, the expected damage scenarios considering the local hazard effects induced are developed in order to evaluate the damage increment, averagely equal to 50%, due to the seismic amplification of different soil categories.
Highlights
The concept of seismic risk, in general, can be understood as a multi-factorial combination of three main parameters, Vulnerability (V), Exposure (E) and Hazard (H), which directly or indirectly influence a specific area
A sub-urban sector of the historical centre of Senerchia, in the investigated study area with the goal to plot damage scenarios expected under different earthquake district of Avellino, was selected as a case study
As mathematically expressed by Equation (3), the vulnerability curves depend on three variables: the vulnerability index (VI ), the seismic hazard, expressed in terms of macroseismic intensity (IEMS-98 ) and the ductility factor Q, ranging from 1.0 to 4.0, which describes the ductility of a certain typological class
Summary
The concept of seismic risk, in general, can be understood as a multi-factorial combination of three main parameters, Vulnerability (V), Exposure (E) and Hazard (H), which directly or indirectly influence a specific area. A reliable and easy method for large scale analysis developed in Reference [20] allows us to estimate the macroseismic intensity increment derived from specific soil category so as to properly define, taking into account the local amplification factors, the global vulnerability of building stocks In this framework, the macroseismic method allows for a direct estimation of the problem as it allows directly linking the cause (expected damage) to the effect (local seismic amplification) according to the EMS-98 scale. The influence of soil conditions was considered by implementing a macroelement model of a typical masonry aggregate of the Based on these considerations, a sub-urban sector of the historical centre of Senerchia, in the investigated study area with the goal to plot damage scenarios expected under different earthquake district of Avellino, was selected as a case study.
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