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 finite-discrete 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.

Simulation Of Shake Table Tests on Out-of-Plane Masonry Buildings. Part (II): Combined Finite-Discrete Elements / AL SHAWA, Omar; Sorrentino, Luigi; Liberatore, Domenico. - In: INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE. - ISSN 1558-3058. - ELETTRONICO. - 1:11(2017), pp. 79-93. [10.1080/15583058.2016.1237588]

Simulation Of Shake Table Tests on Out-of-Plane Masonry Buildings. Part (II): Combined Finite-Discrete Elements

AL SHAWA, OMAR;SORRENTINO, Luigi;LIBERATORE, DOMENICO
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 finite-discrete 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
Choice of mechanism; multi-degree-of-freedom mechanism; rigid rotation; rigid sliding; simplified mechanism; Conservation; Architecture2300 Environmental Science (all); 1213
01 Pubblicazione su rivista::01a Articolo in rivista
Simulation Of Shake Table Tests on Out-of-Plane Masonry Buildings. Part (II): Combined Finite-Discrete Elements / AL SHAWA, Omar; Sorrentino, Luigi; Liberatore, Domenico. - In: INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE. - ISSN 1558-3058. - ELETTRONICO. - 1:11(2017), pp. 79-93. [10.1080/15583058.2016.1237588]
File allegati a questo prodotto
File Dimensione Formato  
Alshawa_Simulation_2016.pdf

solo utenti autorizzati

Note: Articolo principale
Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 2.13 MB
Formato Adobe PDF
2.13 MB Adobe PDF   Contatta l'autore

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/903814
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 41
  • ???jsp.display-item.citation.isi??? 33
social impact