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Comparative assessment of finite element macro-modelling approaches for seismic analysis of non-engineered masonry constructions.

Comparative assessment of finite element macro-modelling approaches for seismic analysis of non-engineered masonry constructions.

Authors :
Ravichandran, Nagavinothini
Losanno, Daniele
Parisi, Fulvio
Source :
Bulletin of Earthquake Engineering. Oct2021, Vol. 19 Issue 13, p5565-5607. 43p.
Publication Year :
2021

Abstract

All around the world, non-engineered masonry constructions (NECs) typically have high vulnerability to seismic ground motion, resulting in heavy damage and severe casualties after earthquakes. Even though a number of computational strategies have been developed for seismic analysis of unreinforced masonry structures, a few studies have focussed on NECs located in developing countries. In this paper, different modelling options for finite element analysis of non-engineered masonry buildings are investigated. The goal of the study was to identify the modelling option with the best trade-off between computational burden and accuracy of results, in view of seismic risk assessment of NECs at regional scale. Based on the experimental behaviour of a single-storey structure representative of Indian non-engineered masonry buildings, the output of seismic response analysis of refined 3D models in ANSYS was compared to that of a simplified model based on 2D, nonlinear, layered shell elements in SAP2000. The numerical-experimental comparison was carried out under incremental static lateral loading, whereas nonlinear time history analysis was performed to investigate the dynamic performance of the case-study structure. Analysis results show that the simplified model can be a computationally efficient modelling option for both nonlinear static and dynamic analyses, particularly in case of force-based approaches for design and assessment of base isolation systems aimed at the large-scale seismic vulnerability mitigation of NECs. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
1570761X
Volume :
19
Issue :
13
Database :
Academic Search Index
Journal :
Bulletin of Earthquake Engineering
Publication Type :
Academic Journal
Accession number :
152603864
Full Text :
https://doi.org/10.1007/s10518-021-01180-3