2023, Contributo in atti di convegno, ENG
Pellegrini D.
Masonry vaults are widely employed in ancient constructions and play a crucial role in their static and dynamic response. Even if they are designed to withstand gravity and dead loads, these structural elements must also resist dynamic excitations caused by traffic and earthquakes; hence, the knowledge of their behaviour still requires in-depth analyses from experimental and numerical points of view. Within the framework of the SERA.TA project (Seismolo-gy and Earthquake Engineering Research Infrastructure Alliance for Europe), a blind pre-diction contest has been organized to assess the numerical analyses capability to predict the seismic response of a 1:1 scale model of masonry cross vault, realized and tested at LNEC laboratory (Portugal). This paper describes the analyses conducted on a numerical model of the vault created by NOSA-ITACA, a code developed in-house by ISTI-CNR for the analysis and calibration of masonry structures. The experimental accelerations, displacements, and crack patterns have been compared with the predicted numerical ones achieved in the blind pre-diction phase, by performing a nonlinear dynamic analysis of the un-strengthened finite element model of the vault
2023, Rapporto di ricerca (Research report), ENG
Pellegrini D.
Masonry vaults are widely employed in ancient constructions and play a crucial role in their static and dynamic behaviour. In the last decades, the scientific community has carried out, on the one hand, several experimental campaigns aimed at characterising the response of masonry vaults to horizontal actions; on the other, it has developed sophisticated numerical models able to catch the crucial features of their structural response. Within the framework of the SERA.TA project (Seismology and Earthquake Engineering Research Infrastructure Alliance for Europe), pre and post-diction contests have been organised to assess the capability of numerical methods to predict the seismic response of a 1:1 scale model of a masonry cross vault, realised and tested at LNEC laboratory (Portugal). This paper outlines the numerical analyses performed on some vault models within the pre and post-diction phase of the project. The numerical models have been created and analysed with NOSA-ITACA, a finite element software implemented at ISTI-CNR and devoted to the structural analysis of ancient masonry constructions. Pros and cons of the numerical simulations have been analysed, comparing the prediction and post-diction results with the experimental data in terms of accelerations, displacements, and crack patterns. Numerical results fit the experimental outcomes, and betterment is evident in the post-diction phase.
2001, Contributo in atti di convegno, ENG
Brocato M.; De Domenico A.; Zanghì F.
An abstract is not available.