| Titre | Experimental evaluation of the mechanical parameters for seismic assessment of traditional brick and stone masonry buildings in eastern Canada |
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| Auteur | Nollet, M -J; Guizani, L; Abo El Ezz, A ; Touraille, J; Boldireff, É; Moretti, P |
| Source | Canadian Society for Civil Engineering, Annual Conference, 2019: growing with youth, proceedings; 2019 p. GEN170.1-GEN170.10  Accès ouvert |
| Liens | Online - En ligne
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| Année | 2019 |
| Séries alt. | Ressources naturelles Canada, Contribution externe 20190132 |
| Éditeur | Canadian Society for Civil Engineering |
| Réunion | Canadian Society for Civil Engineering Annual Conference 2019; Laval, QC; CA; juin 12, 2019 |
| Document | livre |
| Lang. | anglais |
| Media | papier; en ligne; numérique |
| Formats | pdf |
| Sujets | secousses séismiques; risque de tremblement de terre; dégât causés par les tremblements de terre; risque sismique; resistance au cisaillement; Méthodologie; Bâtiment; Matériau de construction; géologie de
l'ingénieur; Sciences et technologie; Santé et sécurité |
| Illustrations | photographies; organigrammes; tableaux; diagrammes schématiques; graphiques; modèles |
| Programme | Géoscience pour la sécurité publique Évaluation quantitative des risques |
| Diffusé | 2019 06 01 |
| Résumé | (disponible en anglais seulement)
Eastern Canada has a large stock of old brick or stone URM buildings with architectural heritage value. To reduce the potential earthquake induced damage to
those URM load-bearing walls structures, architects and engineers are faced with the challenge of evaluating their lateral resistance and seismic performance and selecting efficient rehabilitation and strengthening strategies. Evaluation of the
lateral resistance of URM walls is also key information in damage prediction for seismic risk studies. However, there is limited reported information regarding the mechanical properties of those URM walls, leading to difficulty in providing a
reliable prediction of their seismic resistance. These buildings are made of multi-leaf walls, made of two or three layers of materials of different qualities and properties (stone, rubble stone, brick, tiles). The cohesion of the masonry
assemblies is typically compromised by the degradation of the mortar, resulting in insufficient resistance to earthquakes induced in plane and out of plane loads. Reliable evaluation of seismic resistance of URM walls requires knowledge of their
composition and their geometric properties but most importantly their mechanical material properties. Moreover, they require reliable and validated simple analytical models to calculate the resistance of URM walls. In collaboration with the
architectural firm EVOQ, an experimental program was initiated to validate these models from the behaviour of typical URM walls under axial compression, shear loading and cyclic loading. The experimental program included three distinct phases: (1)
Characterization of the mechanical properties of the masonry and its constituent materials: manufactured moulded brick typically used as replicas of traditional masonry, limestone blocks and cement-lime mortar used to match the mechanical properties
of the original traditional cement-lime mortar. (2) Evaluation of the diagonal shear strength of brick or stone masonry wall specimens. (3) Evaluation of the lateral force-deformation behaviour of the representative wall specimens under cyclic
loading to capture the complex dynamic response and nonlinear behaviour of the masonry.
The obtained results are used to validate equations presented in standards, such as ASCE 41-13 to predict lateral resistance of masonry walls and to develop
predictive relations between the constituent material mechanical properties and the masonry mechanical properties. These are particularly useful for seismic vulnerability studies of traditional unreinforced masonry buildings, as well as in the
evaluation of seismic resistance and the decision-making process of selecting efficient upgrading solutions of heritage masonry buildings. |
| Sommaire | (Résumé en langage clair et simple, non publié)
L'Est du Canada possède un stock important d'anciens bâtiments de maçonnerie non armée (MNA), construits de briques et de pierres. Pour éclairer
les études d'évaluation à l'échelle régionale des risques de dommages potentiels induits par les tremblements de terre, la connaissance des propriétés mécaniques est essentielle pour une estimation fiable de la vulnérabilité sismique des bâtiments
MNA. |
| GEOSCAN ID | 314815 |
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