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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Structural Response of Unreinforced Masonry Walls
Author(s)
Nelson Darío Agüera, Miguel Eduardo Tornello and Carlos Daniel Frau
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DOI:10.17265/1934-7359/2016.02.011
Affiliation(s)
Regional Centre Technology Development for Construction, Seismology and Earthquake Engineering, National Technological University, Mendoza 5525, Argentina
ABSTRACT
Historical buildings located in seismic regions have URM (unreinforced
masonry) walls of considerable width as their main structure. In order to study
the structural response of such type of masonry, it is necessary to know its
mechanical and elastic characteristics. For such purpose, it is generally
necessary to perform destructive and non-destructive tests. Other procedures,
such as the study of masonry through numerical models, would make it possible
to predict, with close approximation, the response of masonry to different
actions. The purpose of this paper is to evaluate the behavior of URM walls
subjected to axial and horizontal load by using a finite element model with the
Abaqus code. Constitutive laws of materials, bricks and mortar are defined,
using two constitutive models of plasticity and damage included in the
materials library. The constitutive models used employ information of
experimental tests performed on bricks and mortar. The results of an analysis
for an URM wall subjected to axial and horizontal load are presented. Responses
of walls were obtained in terms of load versus displacement for different
constitutive models and for different qualities of bricks and mortar. The two
constitutive models used show similar results, particularly in the response
waveforms. However, the
ultimate capacity values show mean variations of around 30%. The two
constitutive models display high dependence upon the mechanical characteristics
of bricks and mortar.
KEYWORDS
Masonry, structural behavior, piles.
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