Out-of-plane response of unreinforced masonry elements is frequently the most critical aspect of the seismic performance of existing masonry buildings. The response of such elements is usually governed by equilibrium rather than strength. Hence, it is customary to resort to rigid-body models, accounting for possible rotations, and/or sliding. However, the results of such analyses depend on the initial choice of the mechanism. In this article, the shaking-table experiments on a brick-masonry specimen, and on a stone-masonry specimen have been modeled by resorting to a combined finitediscrete element strategy. Despite the coarse discretization of both discrete and finite elements, the three-dimensional models are able to capture the experimentally observed multi-degree-of-freedom mechanisms, without any a priori assumption on the mechanism. A sensitivity analysis is carried out, addressing eight different parameters. The identification of the mechanism is sufficiently robust, but the assessment of its activation and failure is best done by combining the finite-discrete element model with a simplified model of the recognised mechanism.

Review of out-of-plane seismic assessment techniques applied to existing masonry buildings / Sorrentino, Luigi; D’Ayala, Dina; de Felice, Gianmarco; Griffith, Michael C.; Lagomarsino, Sergio; Magenes, Guido. - In: INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE. - ISSN 1558-3058. - STAMPA. - 1:11(2017), pp. 2-21. [10.1080/15583058.2016.1237586]

Review of out-of-plane seismic assessment techniques applied to existing masonry buildings

SORRENTINO, Luigi;
2017

Abstract

Out-of-plane response of unreinforced masonry elements is frequently the most critical aspect of the seismic performance of existing masonry buildings. The response of such elements is usually governed by equilibrium rather than strength. Hence, it is customary to resort to rigid-body models, accounting for possible rotations, and/or sliding. However, the results of such analyses depend on the initial choice of the mechanism. In this article, the shaking-table experiments on a brick-masonry specimen, and on a stone-masonry specimen have been modeled by resorting to a combined finitediscrete element strategy. Despite the coarse discretization of both discrete and finite elements, the three-dimensional models are able to capture the experimentally observed multi-degree-of-freedom mechanisms, without any a priori assumption on the mechanism. A sensitivity analysis is carried out, addressing eight different parameters. The identification of the mechanism is sufficiently robust, but the assessment of its activation and failure is best done by combining the finite-discrete element model with a simplified model of the recognised mechanism.
2017
displacement-based assessment; energy-based assessment; force-based assessment; out-of-plane mechanisms; unreinforced masonry buildings
01 Pubblicazione su rivista::01a Articolo in rivista
Review of out-of-plane seismic assessment techniques applied to existing masonry buildings / Sorrentino, Luigi; D’Ayala, Dina; de Felice, Gianmarco; Griffith, Michael C.; Lagomarsino, Sergio; Magenes, Guido. - In: INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE. - ISSN 1558-3058. - STAMPA. - 1:11(2017), pp. 2-21. [10.1080/15583058.2016.1237586]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/904230
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