A mason-inspired pattern generator for historic masonry structures using quality indexes

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A mason-inspired pattern generator for historic masonry structures using quality indexes
Journal
Engineering Structures
Title
A mason-inspired pattern generator for historic masonry structures using quality indexes
Authors
Simon Szabó, Marco F. Funari, Paulo B. Lourenço
Date
February 23, 2024
Highlights
  • A masonry pattern generator able to generate coursed rectangular patterns with consistent masonry quality is presented.
  • A correlation between geometric quality indexes and the seismic behaviour of masonry shear walls is underlined.
  • As the pattern deviates from the regular pattern, the strength capacity is reduced.
  • Future development will involve 3D masonry pattern generation.
ABSTRACT

A considerable amount of historic masonry structures (HMS) are composed of irregular stone masonry and populate historic centres worldwide. However, few studies have systematically investigated the masonry texture’s (or masonry unit arrangement) influence on structural behaviour. The main difficulty stems from the pattern acquisition and the definition of adequate parameters that correlate the texture with the structural behaviour. To this aim, this paper presents a stochastic 2D coursed-rectangular masonry pattern generator that incorporates geometric quality indexes (QI) to generate random patterns with consistent masonry quality and structural behaviour. The generator’s input parameters separately consider the available stone units and the “virtual mason” skill level to cover the range of possible pattern qualities. Finally, it is shown that a selected set of QI-s correlate well with the structural behaviour and that deviations from the “rules of art” reduce masonry structural capacity.

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