The present study aims to provide a comparative analysis between discontinuous models (DM) and continuous (CM) for the of majestic masonry structures subjected seismic events. Specifically, 'Santa Maria Annnuziata' church damaged after Central Italy earthquake sequence in 2016 2017 years. DM is evaluated using different types interaction laws blocks: Discrete Element Method (DEM) Non-Smooth Contact Dynamic method (NSCD). nonlinearity material CM, instead, considered Concrete Damage...

The structural assessment of ancient masonry structures is still a challenging task. main reasons have been related to the shortage information in materials' characterization along with complex geometry and different evolutions its constituents' parts through time. Scientific studies on evaluation capacity design these buildings reported several modelling techniques. goal this work investigate effectiveness numerical approaches simulation cyclic behaviour historic under seismic loads. In...

The conservation of the historical and artistic heritage is one main priorities Italian international policy. great variety masonry buildings that make up this characterized by different combinations materials construction techniques. Then, several damage scenarios could be observed as a result, requiring appropriate retrofitting interventions. A rather accurate structural behavior analysis, especially for horizontal load conditions, allows elaborating correct seismic assessment. Albeit...

This work evaluated the remarkable influence of stereotomy on discrete methods adopted for dynamic response an ancient masonry structure. The historic building used as a case study is Church Santa Maria Varano in Muccia, province Macerata, Italy, which was exposed to severe seismic sequence that hit Central Italy 2016, namely major events Accumoli, Visso, and Norcia. structure modeled using actual blocks three hypothetical arrangements walls investigate existing crack pattern vulnerabilities...

Abstract In an era marked by the urgent need to ensure safety of existing buildings according current standards, evaluating stability masonry structures against hazard events has become a significant challenge. Despite versatility and durability masonry, structural assessments are hampered factors such as limited information on material properties, irregular geometries, ageing. To address this issue, numerous modelling techniques have been developed, supported extensive scientific...

Abstract. In this paper, advanced numerical models are used to study the progressive damage of a historic building, namely Palazzo Podestà and Civic Tower Accumoli (central Italy). The dynamic behaviour structure is analyzed following important seismic events such as those that occurred in 2016-2017. Discontinuous continuous approaches used. formers, masonry response represented both with Discrete Element Method (DEM) Non-Smooth Contact Dynamic (NSCD) method; latter nonlinearity replicated...

The actual dynamic behavior of the masonry civic Clock tower in a little village, heavily damaged by recent 2016 seismic sequence central Italy, is thoroughly investigated means detailed numerical model built and calibrated using experimental modal properties obtained through Ambient Vibration Tests. goal to update uncertain parameters Finite Element Model (elastic moduli, mass densities, constraints, boundary conditions) minimize discrepancy between features. Due high nonlinear dependency...

In this paper the actual dynamic behaviour of civic Clock tower Rotella, a little village in central Italy heavily damaged by recent 2016 seismic sequence, is thoroughly investigated means detailed numerical model built and calibrated using experimental modal properties obtained through Ambient Vibration Tests.The goal to update uncertain parameters Finite Element Model (elastic moduli, mass densities, constraints, boundary conditions) minimize discrepancy between features.Due high nonlinear...

The present work shows the seismic vulnerability analysis of three churches located in Camerino, a village that has reported extensive damages, especially to monumental historical buildings, after Central Italy Earthquakes.The were studied with local and global analysis, these last performed using accurate 3D Finite Element Models where post-elastic behaviour masonry was considered by Total Strain Crack Model.The study showed as use non-linear static is able reproduce good approximation...

The present paper investigates, from an advanced numerical point of view, the progressive damage Amatrice (Rieti, Italy) civic clock tower, after a long sequence strong earthquakes that struck Central Italy in 2016.Two models are here used to provide insight into modalities and behaviour structure under dynamic excitations, namely Discrete Element Method (DEM), Non-Smooth Contact Dynamics (NSCD) method, FE Concrete Damage Plasticity (CDP) model.In both cases, full 3D detailed discretization...

Damage surveys after earthquakes showed that unreinforced masonry buildings are prone to local failure modes related out-of-plane mechanisms of walls caused by the poor connection with orthogonal walls. Otherwise, if element rises isolated it may be subject overturning rather than in-plane collapse. Nowadays, several methods can used evaluate collapses. These require quite a high computational cost, not beneficial practitioners. Advanced numerical models applied, such as discrete and...