In this study, three masonry shear wall prototypes with different opening configurations and a single room (URM) building constituted by the assemblage of the aforementioned walls are studied. Numerical results are compared with the experimental results carried out to validate the advanced numerical modelling. Two different Finite Element models are adopted for the numerical simulations; the first assumes that masonry behaves as a simple homogenous isotropic material exhibiting separate damage in tension and compression, the second relies on discretization of the individual walls and the whole building by means of elastic 8 noded elements and homogenized interfaces. Even though the first method provides acceptable predictions of the lateral load carrying capacity, damage criteria obtained are often not too close to those experimentally observed. Conversely, the second model exhibits the sufficient level of complexity that allows not only to accurately predict the global behavior, but also provides crack patterns very close to those experimentally obtained, so being considered a reliable tool for analysis of URM buildings and further to devise strengthening schemes to reduce their seismic vulnerability.

Experimental and numerical analyses of unreinforced masonry wall components and building

Choudhury T.;Milani G.;
2020-01-01

Abstract

In this study, three masonry shear wall prototypes with different opening configurations and a single room (URM) building constituted by the assemblage of the aforementioned walls are studied. Numerical results are compared with the experimental results carried out to validate the advanced numerical modelling. Two different Finite Element models are adopted for the numerical simulations; the first assumes that masonry behaves as a simple homogenous isotropic material exhibiting separate damage in tension and compression, the second relies on discretization of the individual walls and the whole building by means of elastic 8 noded elements and homogenized interfaces. Even though the first method provides acceptable predictions of the lateral load carrying capacity, damage criteria obtained are often not too close to those experimentally observed. Conversely, the second model exhibits the sufficient level of complexity that allows not only to accurately predict the global behavior, but also provides crack patterns very close to those experimentally obtained, so being considered a reliable tool for analysis of URM buildings and further to devise strengthening schemes to reduce their seismic vulnerability.
2020
Homogenization approach
Macro-model
Masonry building
Non-linear pushover analysis
Unreinforced masonry
File in questo prodotto:
File Dimensione Formato  
2020_CONBUILDMAT_2.pdf

Accesso riservato

Descrizione: 2020_CONBUILDMAT_2
: Publisher’s version
Dimensione 5.57 MB
Formato Adobe PDF
5.57 MB Adobe PDF   Visualizza/Apri

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/11311/1137947
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 32
  • ???jsp.display-item.citation.isi??? 17
social impact