Recent earthquakes have emphasized the high vulnerability of vaulted structures. Their collapse may entail only local damage or can affect the surrounding building because of its heavy mass and the significant horizontal thrust on supporting elements. In this paper, the influence of the vertical component of ground motion on the performance of a numerical model of an unreinforced masonry cross vault is investigated using sets of one-component and two-component ground motions to perform nonlinear dynamic analyses. The set of motions represents the actual seismicity of L’Aquila, Italy, while the investigated vault mimics a reference brickwork specimen. The numerical model falls within the mixed finite–discrete element method and accounts for crack formation, complete separation and new contact formation. The modelling strategy is capable to evaluate the ultimate displacement and load-bearing capacity of the vault under seismic loading and the progressive deformation of the vault up to collapse. The vault is excited by a horizontal component alone or by both horizontal and vertical components. Although without a systematic trend, adding the vertical component worsens the response in about 10% of cases.

The Effect of the Vertical Component of Ground Motion on a Masonry Cross Vault Model / Al Shawa, O.; Liberatore, D.; Sorrentino, L.. - 47:(2023), pp. 1181-1188. (Intervento presentato al convegno 13th edition of the International Conference on Structural Analysis of Historical Constructions (SAHC) tenutosi a Kyoto, Japan) [10.1007/978-3-031-39603-8_95].

The Effect of the Vertical Component of Ground Motion on a Masonry Cross Vault Model

Al Shawa O.;Liberatore D.;Sorrentino L.
2023

Abstract

Recent earthquakes have emphasized the high vulnerability of vaulted structures. Their collapse may entail only local damage or can affect the surrounding building because of its heavy mass and the significant horizontal thrust on supporting elements. In this paper, the influence of the vertical component of ground motion on the performance of a numerical model of an unreinforced masonry cross vault is investigated using sets of one-component and two-component ground motions to perform nonlinear dynamic analyses. The set of motions represents the actual seismicity of L’Aquila, Italy, while the investigated vault mimics a reference brickwork specimen. The numerical model falls within the mixed finite–discrete element method and accounts for crack formation, complete separation and new contact formation. The modelling strategy is capable to evaluate the ultimate displacement and load-bearing capacity of the vault under seismic loading and the progressive deformation of the vault up to collapse. The vault is excited by a horizontal component alone or by both horizontal and vertical components. Although without a systematic trend, adding the vertical component worsens the response in about 10% of cases.
2023
13th edition of the International Conference on Structural Analysis of Historical Constructions (SAHC)
Churches; Finite-discrete element method; Numerical analysis; Seismic behaviour; Unreinforced Masonry
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
The Effect of the Vertical Component of Ground Motion on a Masonry Cross Vault Model / Al Shawa, O.; Liberatore, D.; Sorrentino, L.. - 47:(2023), pp. 1181-1188. (Intervento presentato al convegno 13th edition of the International Conference on Structural Analysis of Historical Constructions (SAHC) tenutosi a Kyoto, Japan) [10.1007/978-3-031-39603-8_95].
File allegati a questo prodotto
File Dimensione Formato  
AlShawa_The Effect of the Vertical Component of Ground Motion on a Masonry Cross Vault Model_2023.pdf

solo gestori archivio

Note: Articolo
Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 1.76 MB
Formato Adobe PDF
1.76 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/11573/1688976
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact