Abstract
The current paper aims at investigating the seismic capacity of a masonry building aggregate in the historical centre of Mirandola based on a reliable ground motion simulation procedure. The examined clustered building is composed of eleven structural units (SUs) mutually interconnected to each other, which are made of brick walls and are characterized by wooden floors poorly connected to the vertical structures. Non-linear static analyses are performed by adopting the 3Muri software to characterize the seismic capacity of both the entire aggregate and the individual SUs. In this framework, a multi-scenario physics-based approach is considered for the definition of the seismic input in terms of broadband seismic signals inclusive of source and site effects. Finally, the incidence of the seismic input variability is discussed for the prediction of the global capacity response of the case study building.
Highlights
The present work aims to provide an exhaustive evaluation of the seismic vulnerability of masonry building aggregates through a case study placed in Mirandola
Ble to appreciate how the simulated structural model provides a global damage level not Congruentlydissimilar to what was discussed in the above-introduced comparison, it is possible to that really detected in the case study aggregate
The research work analysed the seismic vulnerability of an unreinforced masonry building aggregate located in the historic centre of Mirandola using a physics-based simulation approach
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. The seismic hazard analyses, whether based on either a probabilistic or a deterministic approach, are based on the use of simplified correlations (i.e., ground motion prediction equations (GMPE)) for the evaluation and prediction of the ground shaking [21,22,23,24] These formulations, obtained by data-regression analysis deriving from historical events, provide a statistical distribution of the ground motion intensity measure (e.g., spectral acceleration) as a function of multiple parameters, such as the magnitude of the earthquake, Mw , and the site-source distance, R. It is clear that the spatial variability of seismic motion is a fundamental component for the seismic risk analysis of both urban and infrastructural systems for the quantification of expected losses [27,28,29] With such an attempt, the present work aims to provide an exhaustive evaluation of the seismic vulnerability of masonry building aggregates through a case study placed in Mirandola. Different kinematic rupture processes on the fault plane are parameterized by varying the slip field, nucleation point and rupture velocity to take into consideration the source stochastic component in the distribution of the ground motion at the site(s), and the implicit consequences on the global seismic response of the SUs placed in aggregated condition
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