Lucy Davis, Paolo Petroni and Daniele Malomo
i PhD Candidate, McGill University, Montréal, Canada, lucy.davis@mail.mcgill.ca
ii MSc Student, McGill University, Montréal, Canada, paolo.petroni@mail.mcgill.ca
iii Assistant Professor, McGill University, Montréal, Canada, daniele.malomo@mcgill.ca
ABSTRACT
Accurate 3D geometric models are a critical step in the documentation and evaluation of old unreinforced masonry (URM) structures, where complex and irregular geometries are often present. However, detailed geometric documentation strategies such as close-range photogrammetry or 3D terrestrial laser scans often result in large, difficult to navigate digital files. Transitioning from these detailed, high-resolution models to functional 3D CAD models presents several challenges, including high computational cost and significant time investment. Traditional workflows often struggle to efficiently create workable models suitable for structural/seismic analysis, which can be overcome using novel strategies. This paper presents a visual programming approach to discontinuum analysis in a case study of a typical URM industrial building in Eastern Canada. This approach leverages a previously developed simplified modelling strategy, the Distinct-Element macro-crack-network, informed by the Equivalent Frame Method (EFM) as a discretization method implemented into a distinct element software for subsequent seismic analysis. The proposed workflow enables the rapid conversion of dense data into discretized models by automating repetitive tasks and integrating rule-based algorithms for model refinement. The case study analysis investigates the seismic response of a typical old URM industrial building constructed using clay brick masonry and located in Montréal, QC. Results from this study display the use of algorithms paired with a simplified modelling strategy to enhance understanding of the structural behaviour of old URM buildings.
KEYWORDS: Equivalent frame method, discrete element method, unreinforced masonry, visual programming, Eastern Canada.
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